Tue, 08 Aug 2017 15:57:29 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | // Must be at least Windows 2000 or XP to use IsDebuggerPresent |
aoqi@0 | 26 | #define _WIN32_WINNT 0x500 |
aoqi@0 | 27 | |
aoqi@0 | 28 | // no precompiled headers |
aoqi@0 | 29 | #include "classfile/classLoader.hpp" |
aoqi@0 | 30 | #include "classfile/systemDictionary.hpp" |
aoqi@0 | 31 | #include "classfile/vmSymbols.hpp" |
aoqi@0 | 32 | #include "code/icBuffer.hpp" |
aoqi@0 | 33 | #include "code/vtableStubs.hpp" |
aoqi@0 | 34 | #include "compiler/compileBroker.hpp" |
aoqi@0 | 35 | #include "compiler/disassembler.hpp" |
aoqi@0 | 36 | #include "interpreter/interpreter.hpp" |
aoqi@0 | 37 | #include "jvm_windows.h" |
aoqi@0 | 38 | #include "memory/allocation.inline.hpp" |
aoqi@0 | 39 | #include "memory/filemap.hpp" |
aoqi@0 | 40 | #include "mutex_windows.inline.hpp" |
aoqi@0 | 41 | #include "oops/oop.inline.hpp" |
aoqi@0 | 42 | #include "os_share_windows.hpp" |
aoqi@0 | 43 | #include "prims/jniFastGetField.hpp" |
aoqi@0 | 44 | #include "prims/jvm.h" |
aoqi@0 | 45 | #include "prims/jvm_misc.hpp" |
aoqi@0 | 46 | #include "runtime/arguments.hpp" |
aoqi@0 | 47 | #include "runtime/extendedPC.hpp" |
aoqi@0 | 48 | #include "runtime/globals.hpp" |
aoqi@0 | 49 | #include "runtime/interfaceSupport.hpp" |
aoqi@0 | 50 | #include "runtime/java.hpp" |
aoqi@0 | 51 | #include "runtime/javaCalls.hpp" |
aoqi@0 | 52 | #include "runtime/mutexLocker.hpp" |
aoqi@0 | 53 | #include "runtime/objectMonitor.hpp" |
aoqi@0 | 54 | #include "runtime/osThread.hpp" |
aoqi@0 | 55 | #include "runtime/perfMemory.hpp" |
aoqi@0 | 56 | #include "runtime/sharedRuntime.hpp" |
aoqi@0 | 57 | #include "runtime/statSampler.hpp" |
aoqi@0 | 58 | #include "runtime/stubRoutines.hpp" |
aoqi@0 | 59 | #include "runtime/thread.inline.hpp" |
aoqi@0 | 60 | #include "runtime/threadCritical.hpp" |
aoqi@0 | 61 | #include "runtime/timer.hpp" |
aoqi@0 | 62 | #include "services/attachListener.hpp" |
aoqi@0 | 63 | #include "services/memTracker.hpp" |
aoqi@0 | 64 | #include "services/runtimeService.hpp" |
aoqi@0 | 65 | #include "utilities/decoder.hpp" |
aoqi@0 | 66 | #include "utilities/defaultStream.hpp" |
aoqi@0 | 67 | #include "utilities/events.hpp" |
aoqi@0 | 68 | #include "utilities/growableArray.hpp" |
aoqi@0 | 69 | #include "utilities/vmError.hpp" |
aoqi@0 | 70 | |
aoqi@0 | 71 | #ifdef _DEBUG |
aoqi@0 | 72 | #include <crtdbg.h> |
aoqi@0 | 73 | #endif |
aoqi@0 | 74 | |
aoqi@0 | 75 | |
aoqi@0 | 76 | #include <windows.h> |
aoqi@0 | 77 | #include <sys/types.h> |
aoqi@0 | 78 | #include <sys/stat.h> |
aoqi@0 | 79 | #include <sys/timeb.h> |
aoqi@0 | 80 | #include <objidl.h> |
aoqi@0 | 81 | #include <shlobj.h> |
aoqi@0 | 82 | |
aoqi@0 | 83 | #include <malloc.h> |
aoqi@0 | 84 | #include <signal.h> |
aoqi@0 | 85 | #include <direct.h> |
aoqi@0 | 86 | #include <errno.h> |
aoqi@0 | 87 | #include <fcntl.h> |
aoqi@0 | 88 | #include <io.h> |
aoqi@0 | 89 | #include <process.h> // For _beginthreadex(), _endthreadex() |
aoqi@0 | 90 | #include <imagehlp.h> // For os::dll_address_to_function_name |
aoqi@0 | 91 | /* for enumerating dll libraries */ |
aoqi@0 | 92 | #include <vdmdbg.h> |
aoqi@0 | 93 | |
aoqi@0 | 94 | // for timer info max values which include all bits |
aoqi@0 | 95 | #define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF) |
aoqi@0 | 96 | |
aoqi@0 | 97 | // For DLL loading/load error detection |
aoqi@0 | 98 | // Values of PE COFF |
aoqi@0 | 99 | #define IMAGE_FILE_PTR_TO_SIGNATURE 0x3c |
aoqi@0 | 100 | #define IMAGE_FILE_SIGNATURE_LENGTH 4 |
aoqi@0 | 101 | |
aoqi@0 | 102 | static HANDLE main_process; |
aoqi@0 | 103 | static HANDLE main_thread; |
aoqi@0 | 104 | static int main_thread_id; |
aoqi@0 | 105 | |
aoqi@0 | 106 | static FILETIME process_creation_time; |
aoqi@0 | 107 | static FILETIME process_exit_time; |
aoqi@0 | 108 | static FILETIME process_user_time; |
aoqi@0 | 109 | static FILETIME process_kernel_time; |
aoqi@0 | 110 | |
aoqi@0 | 111 | #ifdef _M_IA64 |
aoqi@0 | 112 | #define __CPU__ ia64 |
aoqi@0 | 113 | #elif _M_AMD64 |
aoqi@0 | 114 | #define __CPU__ amd64 |
aoqi@0 | 115 | #else |
aoqi@0 | 116 | #define __CPU__ i486 |
aoqi@0 | 117 | #endif |
aoqi@0 | 118 | |
aoqi@0 | 119 | // save DLL module handle, used by GetModuleFileName |
aoqi@0 | 120 | |
aoqi@0 | 121 | HINSTANCE vm_lib_handle; |
aoqi@0 | 122 | |
aoqi@0 | 123 | BOOL WINAPI DllMain(HINSTANCE hinst, DWORD reason, LPVOID reserved) { |
aoqi@0 | 124 | switch (reason) { |
aoqi@0 | 125 | case DLL_PROCESS_ATTACH: |
aoqi@0 | 126 | vm_lib_handle = hinst; |
aoqi@0 | 127 | if(ForceTimeHighResolution) |
aoqi@0 | 128 | timeBeginPeriod(1L); |
aoqi@0 | 129 | break; |
aoqi@0 | 130 | case DLL_PROCESS_DETACH: |
aoqi@0 | 131 | if(ForceTimeHighResolution) |
aoqi@0 | 132 | timeEndPeriod(1L); |
aoqi@0 | 133 | break; |
aoqi@0 | 134 | default: |
aoqi@0 | 135 | break; |
aoqi@0 | 136 | } |
aoqi@0 | 137 | return true; |
aoqi@0 | 138 | } |
aoqi@0 | 139 | |
aoqi@0 | 140 | static inline double fileTimeAsDouble(FILETIME* time) { |
aoqi@0 | 141 | const double high = (double) ((unsigned int) ~0); |
aoqi@0 | 142 | const double split = 10000000.0; |
aoqi@0 | 143 | double result = (time->dwLowDateTime / split) + |
aoqi@0 | 144 | time->dwHighDateTime * (high/split); |
aoqi@0 | 145 | return result; |
aoqi@0 | 146 | } |
aoqi@0 | 147 | |
aoqi@0 | 148 | // Implementation of os |
aoqi@0 | 149 | |
aoqi@0 | 150 | bool os::getenv(const char* name, char* buffer, int len) { |
aoqi@0 | 151 | int result = GetEnvironmentVariable(name, buffer, len); |
aoqi@0 | 152 | return result > 0 && result < len; |
aoqi@0 | 153 | } |
aoqi@0 | 154 | |
aoqi@0 | 155 | |
aoqi@0 | 156 | // No setuid programs under Windows. |
aoqi@0 | 157 | bool os::have_special_privileges() { |
aoqi@0 | 158 | return false; |
aoqi@0 | 159 | } |
aoqi@0 | 160 | |
aoqi@0 | 161 | |
aoqi@0 | 162 | // This method is a periodic task to check for misbehaving JNI applications |
aoqi@0 | 163 | // under CheckJNI, we can add any periodic checks here. |
aoqi@0 | 164 | // For Windows at the moment does nothing |
aoqi@0 | 165 | void os::run_periodic_checks() { |
aoqi@0 | 166 | return; |
aoqi@0 | 167 | } |
aoqi@0 | 168 | |
aoqi@0 | 169 | #ifndef _WIN64 |
aoqi@0 | 170 | // previous UnhandledExceptionFilter, if there is one |
aoqi@0 | 171 | static LPTOP_LEVEL_EXCEPTION_FILTER prev_uef_handler = NULL; |
aoqi@0 | 172 | |
aoqi@0 | 173 | LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo); |
aoqi@0 | 174 | #endif |
aoqi@0 | 175 | void os::init_system_properties_values() { |
aoqi@0 | 176 | /* sysclasspath, java_home, dll_dir */ |
aoqi@0 | 177 | { |
aoqi@0 | 178 | char *home_path; |
aoqi@0 | 179 | char *dll_path; |
aoqi@0 | 180 | char *pslash; |
aoqi@0 | 181 | char *bin = "\\bin"; |
aoqi@0 | 182 | char home_dir[MAX_PATH]; |
aoqi@0 | 183 | |
aoqi@0 | 184 | if (!getenv("_ALT_JAVA_HOME_DIR", home_dir, MAX_PATH)) { |
aoqi@0 | 185 | os::jvm_path(home_dir, sizeof(home_dir)); |
aoqi@0 | 186 | // Found the full path to jvm.dll. |
aoqi@0 | 187 | // Now cut the path to <java_home>/jre if we can. |
aoqi@0 | 188 | *(strrchr(home_dir, '\\')) = '\0'; /* get rid of \jvm.dll */ |
aoqi@0 | 189 | pslash = strrchr(home_dir, '\\'); |
aoqi@0 | 190 | if (pslash != NULL) { |
aoqi@0 | 191 | *pslash = '\0'; /* get rid of \{client|server} */ |
aoqi@0 | 192 | pslash = strrchr(home_dir, '\\'); |
aoqi@0 | 193 | if (pslash != NULL) |
aoqi@0 | 194 | *pslash = '\0'; /* get rid of \bin */ |
aoqi@0 | 195 | } |
aoqi@0 | 196 | } |
aoqi@0 | 197 | |
aoqi@0 | 198 | home_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + 1, mtInternal); |
aoqi@0 | 199 | if (home_path == NULL) |
aoqi@0 | 200 | return; |
aoqi@0 | 201 | strcpy(home_path, home_dir); |
aoqi@0 | 202 | Arguments::set_java_home(home_path); |
aoqi@0 | 203 | |
aoqi@0 | 204 | dll_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + strlen(bin) + 1, mtInternal); |
aoqi@0 | 205 | if (dll_path == NULL) |
aoqi@0 | 206 | return; |
aoqi@0 | 207 | strcpy(dll_path, home_dir); |
aoqi@0 | 208 | strcat(dll_path, bin); |
aoqi@0 | 209 | Arguments::set_dll_dir(dll_path); |
aoqi@0 | 210 | |
aoqi@0 | 211 | if (!set_boot_path('\\', ';')) |
aoqi@0 | 212 | return; |
aoqi@0 | 213 | } |
aoqi@0 | 214 | |
aoqi@0 | 215 | /* library_path */ |
aoqi@0 | 216 | #define EXT_DIR "\\lib\\ext" |
aoqi@0 | 217 | #define BIN_DIR "\\bin" |
aoqi@0 | 218 | #define PACKAGE_DIR "\\Sun\\Java" |
aoqi@0 | 219 | { |
aoqi@0 | 220 | /* Win32 library search order (See the documentation for LoadLibrary): |
aoqi@0 | 221 | * |
aoqi@0 | 222 | * 1. The directory from which application is loaded. |
aoqi@0 | 223 | * 2. The system wide Java Extensions directory (Java only) |
aoqi@0 | 224 | * 3. System directory (GetSystemDirectory) |
aoqi@0 | 225 | * 4. Windows directory (GetWindowsDirectory) |
aoqi@0 | 226 | * 5. The PATH environment variable |
aoqi@0 | 227 | * 6. The current directory |
aoqi@0 | 228 | */ |
aoqi@0 | 229 | |
aoqi@0 | 230 | char *library_path; |
aoqi@0 | 231 | char tmp[MAX_PATH]; |
aoqi@0 | 232 | char *path_str = ::getenv("PATH"); |
aoqi@0 | 233 | |
aoqi@0 | 234 | library_path = NEW_C_HEAP_ARRAY(char, MAX_PATH * 5 + sizeof(PACKAGE_DIR) + |
aoqi@0 | 235 | sizeof(BIN_DIR) + (path_str ? strlen(path_str) : 0) + 10, mtInternal); |
aoqi@0 | 236 | |
aoqi@0 | 237 | library_path[0] = '\0'; |
aoqi@0 | 238 | |
aoqi@0 | 239 | GetModuleFileName(NULL, tmp, sizeof(tmp)); |
aoqi@0 | 240 | *(strrchr(tmp, '\\')) = '\0'; |
aoqi@0 | 241 | strcat(library_path, tmp); |
aoqi@0 | 242 | |
aoqi@0 | 243 | GetWindowsDirectory(tmp, sizeof(tmp)); |
aoqi@0 | 244 | strcat(library_path, ";"); |
aoqi@0 | 245 | strcat(library_path, tmp); |
aoqi@0 | 246 | strcat(library_path, PACKAGE_DIR BIN_DIR); |
aoqi@0 | 247 | |
aoqi@0 | 248 | GetSystemDirectory(tmp, sizeof(tmp)); |
aoqi@0 | 249 | strcat(library_path, ";"); |
aoqi@0 | 250 | strcat(library_path, tmp); |
aoqi@0 | 251 | |
aoqi@0 | 252 | GetWindowsDirectory(tmp, sizeof(tmp)); |
aoqi@0 | 253 | strcat(library_path, ";"); |
aoqi@0 | 254 | strcat(library_path, tmp); |
aoqi@0 | 255 | |
aoqi@0 | 256 | if (path_str) { |
aoqi@0 | 257 | strcat(library_path, ";"); |
aoqi@0 | 258 | strcat(library_path, path_str); |
aoqi@0 | 259 | } |
aoqi@0 | 260 | |
aoqi@0 | 261 | strcat(library_path, ";."); |
aoqi@0 | 262 | |
aoqi@0 | 263 | Arguments::set_library_path(library_path); |
aoqi@0 | 264 | FREE_C_HEAP_ARRAY(char, library_path, mtInternal); |
aoqi@0 | 265 | } |
aoqi@0 | 266 | |
aoqi@0 | 267 | /* Default extensions directory */ |
aoqi@0 | 268 | { |
aoqi@0 | 269 | char path[MAX_PATH]; |
aoqi@0 | 270 | char buf[2 * MAX_PATH + 2 * sizeof(EXT_DIR) + sizeof(PACKAGE_DIR) + 1]; |
aoqi@0 | 271 | GetWindowsDirectory(path, MAX_PATH); |
aoqi@0 | 272 | sprintf(buf, "%s%s;%s%s%s", Arguments::get_java_home(), EXT_DIR, |
aoqi@0 | 273 | path, PACKAGE_DIR, EXT_DIR); |
aoqi@0 | 274 | Arguments::set_ext_dirs(buf); |
aoqi@0 | 275 | } |
aoqi@0 | 276 | #undef EXT_DIR |
aoqi@0 | 277 | #undef BIN_DIR |
aoqi@0 | 278 | #undef PACKAGE_DIR |
aoqi@0 | 279 | |
aoqi@0 | 280 | /* Default endorsed standards directory. */ |
aoqi@0 | 281 | { |
aoqi@0 | 282 | #define ENDORSED_DIR "\\lib\\endorsed" |
aoqi@0 | 283 | size_t len = strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR); |
aoqi@0 | 284 | char * buf = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
aoqi@0 | 285 | sprintf(buf, "%s%s", Arguments::get_java_home(), ENDORSED_DIR); |
aoqi@0 | 286 | Arguments::set_endorsed_dirs(buf); |
aoqi@0 | 287 | #undef ENDORSED_DIR |
aoqi@0 | 288 | } |
aoqi@0 | 289 | |
aoqi@0 | 290 | #ifndef _WIN64 |
aoqi@0 | 291 | // set our UnhandledExceptionFilter and save any previous one |
aoqi@0 | 292 | prev_uef_handler = SetUnhandledExceptionFilter(Handle_FLT_Exception); |
aoqi@0 | 293 | #endif |
aoqi@0 | 294 | |
aoqi@0 | 295 | // Done |
aoqi@0 | 296 | return; |
aoqi@0 | 297 | } |
aoqi@0 | 298 | |
aoqi@0 | 299 | void os::breakpoint() { |
aoqi@0 | 300 | DebugBreak(); |
aoqi@0 | 301 | } |
aoqi@0 | 302 | |
aoqi@0 | 303 | // Invoked from the BREAKPOINT Macro |
aoqi@0 | 304 | extern "C" void breakpoint() { |
aoqi@0 | 305 | os::breakpoint(); |
aoqi@0 | 306 | } |
aoqi@0 | 307 | |
aoqi@0 | 308 | /* |
aoqi@0 | 309 | * RtlCaptureStackBackTrace Windows API may not exist prior to Windows XP. |
aoqi@0 | 310 | * So far, this method is only used by Native Memory Tracking, which is |
aoqi@0 | 311 | * only supported on Windows XP or later. |
aoqi@0 | 312 | */ |
aoqi@0 | 313 | address os::get_caller_pc(int n) { |
aoqi@0 | 314 | #ifdef _NMT_NOINLINE_ |
aoqi@0 | 315 | n ++; |
aoqi@0 | 316 | #endif |
aoqi@0 | 317 | address pc; |
aoqi@0 | 318 | if (os::Kernel32Dll::RtlCaptureStackBackTrace(n + 1, 1, (PVOID*)&pc, NULL) == 1) { |
aoqi@0 | 319 | return pc; |
aoqi@0 | 320 | } |
aoqi@0 | 321 | return NULL; |
aoqi@0 | 322 | } |
aoqi@0 | 323 | |
aoqi@0 | 324 | |
aoqi@0 | 325 | // os::current_stack_base() |
aoqi@0 | 326 | // |
aoqi@0 | 327 | // Returns the base of the stack, which is the stack's |
aoqi@0 | 328 | // starting address. This function must be called |
aoqi@0 | 329 | // while running on the stack of the thread being queried. |
aoqi@0 | 330 | |
aoqi@0 | 331 | address os::current_stack_base() { |
aoqi@0 | 332 | MEMORY_BASIC_INFORMATION minfo; |
aoqi@0 | 333 | address stack_bottom; |
aoqi@0 | 334 | size_t stack_size; |
aoqi@0 | 335 | |
aoqi@0 | 336 | VirtualQuery(&minfo, &minfo, sizeof(minfo)); |
aoqi@0 | 337 | stack_bottom = (address)minfo.AllocationBase; |
aoqi@0 | 338 | stack_size = minfo.RegionSize; |
aoqi@0 | 339 | |
aoqi@0 | 340 | // Add up the sizes of all the regions with the same |
aoqi@0 | 341 | // AllocationBase. |
aoqi@0 | 342 | while( 1 ) |
aoqi@0 | 343 | { |
aoqi@0 | 344 | VirtualQuery(stack_bottom+stack_size, &minfo, sizeof(minfo)); |
aoqi@0 | 345 | if ( stack_bottom == (address)minfo.AllocationBase ) |
aoqi@0 | 346 | stack_size += minfo.RegionSize; |
aoqi@0 | 347 | else |
aoqi@0 | 348 | break; |
aoqi@0 | 349 | } |
aoqi@0 | 350 | |
aoqi@0 | 351 | #ifdef _M_IA64 |
aoqi@0 | 352 | // IA64 has memory and register stacks |
aoqi@0 | 353 | // |
aoqi@0 | 354 | // This is the stack layout you get on NT/IA64 if you specify 1MB stack limit |
aoqi@0 | 355 | // at thread creation (1MB backing store growing upwards, 1MB memory stack |
aoqi@0 | 356 | // growing downwards, 2MB summed up) |
aoqi@0 | 357 | // |
aoqi@0 | 358 | // ... |
aoqi@0 | 359 | // ------- top of stack (high address) ----- |
aoqi@0 | 360 | // | |
aoqi@0 | 361 | // | 1MB |
aoqi@0 | 362 | // | Backing Store (Register Stack) |
aoqi@0 | 363 | // | |
aoqi@0 | 364 | // | / \ |
aoqi@0 | 365 | // | | |
aoqi@0 | 366 | // | | |
aoqi@0 | 367 | // | | |
aoqi@0 | 368 | // ------------------------ stack base ----- |
aoqi@0 | 369 | // | 1MB |
aoqi@0 | 370 | // | Memory Stack |
aoqi@0 | 371 | // | |
aoqi@0 | 372 | // | | |
aoqi@0 | 373 | // | | |
aoqi@0 | 374 | // | | |
aoqi@0 | 375 | // | \ / |
aoqi@0 | 376 | // | |
aoqi@0 | 377 | // ----- bottom of stack (low address) ----- |
aoqi@0 | 378 | // ... |
aoqi@0 | 379 | |
aoqi@0 | 380 | stack_size = stack_size / 2; |
aoqi@0 | 381 | #endif |
aoqi@0 | 382 | return stack_bottom + stack_size; |
aoqi@0 | 383 | } |
aoqi@0 | 384 | |
aoqi@0 | 385 | size_t os::current_stack_size() { |
aoqi@0 | 386 | size_t sz; |
aoqi@0 | 387 | MEMORY_BASIC_INFORMATION minfo; |
aoqi@0 | 388 | VirtualQuery(&minfo, &minfo, sizeof(minfo)); |
aoqi@0 | 389 | sz = (size_t)os::current_stack_base() - (size_t)minfo.AllocationBase; |
aoqi@0 | 390 | return sz; |
aoqi@0 | 391 | } |
aoqi@0 | 392 | |
aoqi@0 | 393 | struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
aoqi@0 | 394 | const struct tm* time_struct_ptr = localtime(clock); |
aoqi@0 | 395 | if (time_struct_ptr != NULL) { |
aoqi@0 | 396 | *res = *time_struct_ptr; |
aoqi@0 | 397 | return res; |
aoqi@0 | 398 | } |
aoqi@0 | 399 | return NULL; |
aoqi@0 | 400 | } |
aoqi@0 | 401 | |
aoqi@0 | 402 | LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo); |
aoqi@0 | 403 | |
aoqi@0 | 404 | // Thread start routine for all new Java threads |
aoqi@0 | 405 | static unsigned __stdcall java_start(Thread* thread) { |
aoqi@0 | 406 | // Try to randomize the cache line index of hot stack frames. |
aoqi@0 | 407 | // This helps when threads of the same stack traces evict each other's |
aoqi@0 | 408 | // cache lines. The threads can be either from the same JVM instance, or |
aoqi@0 | 409 | // from different JVM instances. The benefit is especially true for |
aoqi@0 | 410 | // processors with hyperthreading technology. |
aoqi@0 | 411 | static int counter = 0; |
aoqi@0 | 412 | int pid = os::current_process_id(); |
aoqi@0 | 413 | _alloca(((pid ^ counter++) & 7) * 128); |
aoqi@0 | 414 | |
aoqi@0 | 415 | OSThread* osthr = thread->osthread(); |
aoqi@0 | 416 | assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); |
aoqi@0 | 417 | |
aoqi@0 | 418 | if (UseNUMA) { |
aoqi@0 | 419 | int lgrp_id = os::numa_get_group_id(); |
aoqi@0 | 420 | if (lgrp_id != -1) { |
aoqi@0 | 421 | thread->set_lgrp_id(lgrp_id); |
aoqi@0 | 422 | } |
aoqi@0 | 423 | } |
aoqi@0 | 424 | |
aoqi@0 | 425 | |
aoqi@0 | 426 | // Install a win32 structured exception handler around every thread created |
aoqi@0 | 427 | // by VM, so VM can genrate error dump when an exception occurred in non- |
aoqi@0 | 428 | // Java thread (e.g. VM thread). |
aoqi@0 | 429 | __try { |
aoqi@0 | 430 | thread->run(); |
aoqi@0 | 431 | } __except(topLevelExceptionFilter( |
aoqi@0 | 432 | (_EXCEPTION_POINTERS*)_exception_info())) { |
aoqi@0 | 433 | // Nothing to do. |
aoqi@0 | 434 | } |
aoqi@0 | 435 | |
aoqi@0 | 436 | // One less thread is executing |
aoqi@0 | 437 | // When the VMThread gets here, the main thread may have already exited |
aoqi@0 | 438 | // which frees the CodeHeap containing the Atomic::add code |
aoqi@0 | 439 | if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { |
aoqi@0 | 440 | Atomic::dec_ptr((intptr_t*)&os::win32::_os_thread_count); |
aoqi@0 | 441 | } |
aoqi@0 | 442 | |
aoqi@0 | 443 | return 0; |
aoqi@0 | 444 | } |
aoqi@0 | 445 | |
aoqi@0 | 446 | static OSThread* create_os_thread(Thread* thread, HANDLE thread_handle, int thread_id) { |
aoqi@0 | 447 | // Allocate the OSThread object |
aoqi@0 | 448 | OSThread* osthread = new OSThread(NULL, NULL); |
aoqi@0 | 449 | if (osthread == NULL) return NULL; |
aoqi@0 | 450 | |
aoqi@0 | 451 | // Initialize support for Java interrupts |
aoqi@0 | 452 | HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL); |
aoqi@0 | 453 | if (interrupt_event == NULL) { |
aoqi@0 | 454 | delete osthread; |
aoqi@0 | 455 | return NULL; |
aoqi@0 | 456 | } |
aoqi@0 | 457 | osthread->set_interrupt_event(interrupt_event); |
aoqi@0 | 458 | |
aoqi@0 | 459 | // Store info on the Win32 thread into the OSThread |
aoqi@0 | 460 | osthread->set_thread_handle(thread_handle); |
aoqi@0 | 461 | osthread->set_thread_id(thread_id); |
aoqi@0 | 462 | |
aoqi@0 | 463 | if (UseNUMA) { |
aoqi@0 | 464 | int lgrp_id = os::numa_get_group_id(); |
aoqi@0 | 465 | if (lgrp_id != -1) { |
aoqi@0 | 466 | thread->set_lgrp_id(lgrp_id); |
aoqi@0 | 467 | } |
aoqi@0 | 468 | } |
aoqi@0 | 469 | |
aoqi@0 | 470 | // Initial thread state is INITIALIZED, not SUSPENDED |
aoqi@0 | 471 | osthread->set_state(INITIALIZED); |
aoqi@0 | 472 | |
aoqi@0 | 473 | return osthread; |
aoqi@0 | 474 | } |
aoqi@0 | 475 | |
aoqi@0 | 476 | |
aoqi@0 | 477 | bool os::create_attached_thread(JavaThread* thread) { |
aoqi@0 | 478 | #ifdef ASSERT |
aoqi@0 | 479 | thread->verify_not_published(); |
aoqi@0 | 480 | #endif |
aoqi@0 | 481 | HANDLE thread_h; |
aoqi@0 | 482 | if (!DuplicateHandle(main_process, GetCurrentThread(), GetCurrentProcess(), |
aoqi@0 | 483 | &thread_h, THREAD_ALL_ACCESS, false, 0)) { |
aoqi@0 | 484 | fatal("DuplicateHandle failed\n"); |
aoqi@0 | 485 | } |
aoqi@0 | 486 | OSThread* osthread = create_os_thread(thread, thread_h, |
aoqi@0 | 487 | (int)current_thread_id()); |
aoqi@0 | 488 | if (osthread == NULL) { |
aoqi@0 | 489 | return false; |
aoqi@0 | 490 | } |
aoqi@0 | 491 | |
aoqi@0 | 492 | // Initial thread state is RUNNABLE |
aoqi@0 | 493 | osthread->set_state(RUNNABLE); |
aoqi@0 | 494 | |
aoqi@0 | 495 | thread->set_osthread(osthread); |
aoqi@0 | 496 | return true; |
aoqi@0 | 497 | } |
aoqi@0 | 498 | |
aoqi@0 | 499 | bool os::create_main_thread(JavaThread* thread) { |
aoqi@0 | 500 | #ifdef ASSERT |
aoqi@0 | 501 | thread->verify_not_published(); |
aoqi@0 | 502 | #endif |
aoqi@0 | 503 | if (_starting_thread == NULL) { |
aoqi@0 | 504 | _starting_thread = create_os_thread(thread, main_thread, main_thread_id); |
aoqi@0 | 505 | if (_starting_thread == NULL) { |
aoqi@0 | 506 | return false; |
aoqi@0 | 507 | } |
aoqi@0 | 508 | } |
aoqi@0 | 509 | |
aoqi@0 | 510 | // The primordial thread is runnable from the start) |
aoqi@0 | 511 | _starting_thread->set_state(RUNNABLE); |
aoqi@0 | 512 | |
aoqi@0 | 513 | thread->set_osthread(_starting_thread); |
aoqi@0 | 514 | return true; |
aoqi@0 | 515 | } |
aoqi@0 | 516 | |
aoqi@0 | 517 | // Allocate and initialize a new OSThread |
aoqi@0 | 518 | bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { |
aoqi@0 | 519 | unsigned thread_id; |
aoqi@0 | 520 | |
aoqi@0 | 521 | // Allocate the OSThread object |
aoqi@0 | 522 | OSThread* osthread = new OSThread(NULL, NULL); |
aoqi@0 | 523 | if (osthread == NULL) { |
aoqi@0 | 524 | return false; |
aoqi@0 | 525 | } |
aoqi@0 | 526 | |
aoqi@0 | 527 | // Initialize support for Java interrupts |
aoqi@0 | 528 | HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL); |
aoqi@0 | 529 | if (interrupt_event == NULL) { |
aoqi@0 | 530 | delete osthread; |
aoqi@0 | 531 | return NULL; |
aoqi@0 | 532 | } |
aoqi@0 | 533 | osthread->set_interrupt_event(interrupt_event); |
aoqi@0 | 534 | osthread->set_interrupted(false); |
aoqi@0 | 535 | |
aoqi@0 | 536 | thread->set_osthread(osthread); |
aoqi@0 | 537 | |
aoqi@0 | 538 | if (stack_size == 0) { |
aoqi@0 | 539 | switch (thr_type) { |
aoqi@0 | 540 | case os::java_thread: |
aoqi@0 | 541 | // Java threads use ThreadStackSize which default value can be changed with the flag -Xss |
aoqi@0 | 542 | if (JavaThread::stack_size_at_create() > 0) |
aoqi@0 | 543 | stack_size = JavaThread::stack_size_at_create(); |
aoqi@0 | 544 | break; |
aoqi@0 | 545 | case os::compiler_thread: |
aoqi@0 | 546 | if (CompilerThreadStackSize > 0) { |
aoqi@0 | 547 | stack_size = (size_t)(CompilerThreadStackSize * K); |
aoqi@0 | 548 | break; |
aoqi@0 | 549 | } // else fall through: |
aoqi@0 | 550 | // use VMThreadStackSize if CompilerThreadStackSize is not defined |
aoqi@0 | 551 | case os::vm_thread: |
aoqi@0 | 552 | case os::pgc_thread: |
aoqi@0 | 553 | case os::cgc_thread: |
aoqi@0 | 554 | case os::watcher_thread: |
aoqi@0 | 555 | if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); |
aoqi@0 | 556 | break; |
aoqi@0 | 557 | } |
aoqi@0 | 558 | } |
aoqi@0 | 559 | |
aoqi@0 | 560 | // Create the Win32 thread |
aoqi@0 | 561 | // |
aoqi@0 | 562 | // Contrary to what MSDN document says, "stack_size" in _beginthreadex() |
aoqi@0 | 563 | // does not specify stack size. Instead, it specifies the size of |
aoqi@0 | 564 | // initially committed space. The stack size is determined by |
aoqi@0 | 565 | // PE header in the executable. If the committed "stack_size" is larger |
aoqi@0 | 566 | // than default value in the PE header, the stack is rounded up to the |
aoqi@0 | 567 | // nearest multiple of 1MB. For example if the launcher has default |
aoqi@0 | 568 | // stack size of 320k, specifying any size less than 320k does not |
aoqi@0 | 569 | // affect the actual stack size at all, it only affects the initial |
aoqi@0 | 570 | // commitment. On the other hand, specifying 'stack_size' larger than |
aoqi@0 | 571 | // default value may cause significant increase in memory usage, because |
aoqi@0 | 572 | // not only the stack space will be rounded up to MB, but also the |
aoqi@0 | 573 | // entire space is committed upfront. |
aoqi@0 | 574 | // |
aoqi@0 | 575 | // Finally Windows XP added a new flag 'STACK_SIZE_PARAM_IS_A_RESERVATION' |
aoqi@0 | 576 | // for CreateThread() that can treat 'stack_size' as stack size. However we |
aoqi@0 | 577 | // are not supposed to call CreateThread() directly according to MSDN |
aoqi@0 | 578 | // document because JVM uses C runtime library. The good news is that the |
aoqi@0 | 579 | // flag appears to work with _beginthredex() as well. |
aoqi@0 | 580 | |
aoqi@0 | 581 | #ifndef STACK_SIZE_PARAM_IS_A_RESERVATION |
aoqi@0 | 582 | #define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000) |
aoqi@0 | 583 | #endif |
aoqi@0 | 584 | |
aoqi@0 | 585 | HANDLE thread_handle = |
aoqi@0 | 586 | (HANDLE)_beginthreadex(NULL, |
aoqi@0 | 587 | (unsigned)stack_size, |
aoqi@0 | 588 | (unsigned (__stdcall *)(void*)) java_start, |
aoqi@0 | 589 | thread, |
aoqi@0 | 590 | CREATE_SUSPENDED | STACK_SIZE_PARAM_IS_A_RESERVATION, |
aoqi@0 | 591 | &thread_id); |
aoqi@0 | 592 | if (thread_handle == NULL) { |
aoqi@0 | 593 | // perhaps STACK_SIZE_PARAM_IS_A_RESERVATION is not supported, try again |
aoqi@0 | 594 | // without the flag. |
aoqi@0 | 595 | thread_handle = |
aoqi@0 | 596 | (HANDLE)_beginthreadex(NULL, |
aoqi@0 | 597 | (unsigned)stack_size, |
aoqi@0 | 598 | (unsigned (__stdcall *)(void*)) java_start, |
aoqi@0 | 599 | thread, |
aoqi@0 | 600 | CREATE_SUSPENDED, |
aoqi@0 | 601 | &thread_id); |
aoqi@0 | 602 | } |
aoqi@0 | 603 | if (thread_handle == NULL) { |
aoqi@0 | 604 | // Need to clean up stuff we've allocated so far |
aoqi@0 | 605 | CloseHandle(osthread->interrupt_event()); |
aoqi@0 | 606 | thread->set_osthread(NULL); |
aoqi@0 | 607 | delete osthread; |
aoqi@0 | 608 | return NULL; |
aoqi@0 | 609 | } |
aoqi@0 | 610 | |
aoqi@0 | 611 | Atomic::inc_ptr((intptr_t*)&os::win32::_os_thread_count); |
aoqi@0 | 612 | |
aoqi@0 | 613 | // Store info on the Win32 thread into the OSThread |
aoqi@0 | 614 | osthread->set_thread_handle(thread_handle); |
aoqi@0 | 615 | osthread->set_thread_id(thread_id); |
aoqi@0 | 616 | |
aoqi@0 | 617 | // Initial thread state is INITIALIZED, not SUSPENDED |
aoqi@0 | 618 | osthread->set_state(INITIALIZED); |
aoqi@0 | 619 | |
aoqi@0 | 620 | // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain |
aoqi@0 | 621 | return true; |
aoqi@0 | 622 | } |
aoqi@0 | 623 | |
aoqi@0 | 624 | |
aoqi@0 | 625 | // Free Win32 resources related to the OSThread |
aoqi@0 | 626 | void os::free_thread(OSThread* osthread) { |
aoqi@0 | 627 | assert(osthread != NULL, "osthread not set"); |
aoqi@0 | 628 | CloseHandle(osthread->thread_handle()); |
aoqi@0 | 629 | CloseHandle(osthread->interrupt_event()); |
aoqi@0 | 630 | delete osthread; |
aoqi@0 | 631 | } |
aoqi@0 | 632 | |
aoqi@0 | 633 | |
aoqi@0 | 634 | static int has_performance_count = 0; |
aoqi@0 | 635 | static jlong first_filetime; |
aoqi@0 | 636 | static jlong initial_performance_count; |
aoqi@0 | 637 | static jlong performance_frequency; |
aoqi@0 | 638 | |
aoqi@0 | 639 | |
aoqi@0 | 640 | jlong as_long(LARGE_INTEGER x) { |
aoqi@0 | 641 | jlong result = 0; // initialization to avoid warning |
aoqi@0 | 642 | set_high(&result, x.HighPart); |
aoqi@0 | 643 | set_low(&result, x.LowPart); |
aoqi@0 | 644 | return result; |
aoqi@0 | 645 | } |
aoqi@0 | 646 | |
aoqi@0 | 647 | |
aoqi@0 | 648 | jlong os::elapsed_counter() { |
aoqi@0 | 649 | LARGE_INTEGER count; |
aoqi@0 | 650 | if (has_performance_count) { |
aoqi@0 | 651 | QueryPerformanceCounter(&count); |
aoqi@0 | 652 | return as_long(count) - initial_performance_count; |
aoqi@0 | 653 | } else { |
aoqi@0 | 654 | FILETIME wt; |
aoqi@0 | 655 | GetSystemTimeAsFileTime(&wt); |
aoqi@0 | 656 | return (jlong_from(wt.dwHighDateTime, wt.dwLowDateTime) - first_filetime); |
aoqi@0 | 657 | } |
aoqi@0 | 658 | } |
aoqi@0 | 659 | |
aoqi@0 | 660 | |
aoqi@0 | 661 | jlong os::elapsed_frequency() { |
aoqi@0 | 662 | if (has_performance_count) { |
aoqi@0 | 663 | return performance_frequency; |
aoqi@0 | 664 | } else { |
aoqi@0 | 665 | // the FILETIME time is the number of 100-nanosecond intervals since January 1,1601. |
aoqi@0 | 666 | return 10000000; |
aoqi@0 | 667 | } |
aoqi@0 | 668 | } |
aoqi@0 | 669 | |
aoqi@0 | 670 | |
aoqi@0 | 671 | julong os::available_memory() { |
aoqi@0 | 672 | return win32::available_memory(); |
aoqi@0 | 673 | } |
aoqi@0 | 674 | |
aoqi@0 | 675 | julong os::win32::available_memory() { |
aoqi@0 | 676 | // Use GlobalMemoryStatusEx() because GlobalMemoryStatus() may return incorrect |
aoqi@0 | 677 | // value if total memory is larger than 4GB |
aoqi@0 | 678 | MEMORYSTATUSEX ms; |
aoqi@0 | 679 | ms.dwLength = sizeof(ms); |
aoqi@0 | 680 | GlobalMemoryStatusEx(&ms); |
aoqi@0 | 681 | |
aoqi@0 | 682 | return (julong)ms.ullAvailPhys; |
aoqi@0 | 683 | } |
aoqi@0 | 684 | |
aoqi@0 | 685 | julong os::physical_memory() { |
aoqi@0 | 686 | return win32::physical_memory(); |
aoqi@0 | 687 | } |
aoqi@0 | 688 | |
aoqi@0 | 689 | bool os::has_allocatable_memory_limit(julong* limit) { |
aoqi@0 | 690 | MEMORYSTATUSEX ms; |
aoqi@0 | 691 | ms.dwLength = sizeof(ms); |
aoqi@0 | 692 | GlobalMemoryStatusEx(&ms); |
aoqi@0 | 693 | #ifdef _LP64 |
aoqi@0 | 694 | *limit = (julong)ms.ullAvailVirtual; |
aoqi@0 | 695 | return true; |
aoqi@0 | 696 | #else |
aoqi@0 | 697 | // Limit to 1400m because of the 2gb address space wall |
aoqi@0 | 698 | *limit = MIN2((julong)1400*M, (julong)ms.ullAvailVirtual); |
aoqi@0 | 699 | return true; |
aoqi@0 | 700 | #endif |
aoqi@0 | 701 | } |
aoqi@0 | 702 | |
aoqi@0 | 703 | // VC6 lacks DWORD_PTR |
aoqi@0 | 704 | #if _MSC_VER < 1300 |
aoqi@0 | 705 | typedef UINT_PTR DWORD_PTR; |
aoqi@0 | 706 | #endif |
aoqi@0 | 707 | |
aoqi@0 | 708 | int os::active_processor_count() { |
aoqi@0 | 709 | DWORD_PTR lpProcessAffinityMask = 0; |
aoqi@0 | 710 | DWORD_PTR lpSystemAffinityMask = 0; |
aoqi@0 | 711 | int proc_count = processor_count(); |
aoqi@0 | 712 | if (proc_count <= sizeof(UINT_PTR) * BitsPerByte && |
aoqi@0 | 713 | GetProcessAffinityMask(GetCurrentProcess(), &lpProcessAffinityMask, &lpSystemAffinityMask)) { |
aoqi@0 | 714 | // Nof active processors is number of bits in process affinity mask |
aoqi@0 | 715 | int bitcount = 0; |
aoqi@0 | 716 | while (lpProcessAffinityMask != 0) { |
aoqi@0 | 717 | lpProcessAffinityMask = lpProcessAffinityMask & (lpProcessAffinityMask-1); |
aoqi@0 | 718 | bitcount++; |
aoqi@0 | 719 | } |
aoqi@0 | 720 | return bitcount; |
aoqi@0 | 721 | } else { |
aoqi@0 | 722 | return proc_count; |
aoqi@0 | 723 | } |
aoqi@0 | 724 | } |
aoqi@0 | 725 | |
aoqi@0 | 726 | void os::set_native_thread_name(const char *name) { |
aoqi@0 | 727 | // Not yet implemented. |
aoqi@0 | 728 | return; |
aoqi@0 | 729 | } |
aoqi@0 | 730 | |
aoqi@0 | 731 | bool os::distribute_processes(uint length, uint* distribution) { |
aoqi@0 | 732 | // Not yet implemented. |
aoqi@0 | 733 | return false; |
aoqi@0 | 734 | } |
aoqi@0 | 735 | |
aoqi@0 | 736 | bool os::bind_to_processor(uint processor_id) { |
aoqi@0 | 737 | // Not yet implemented. |
aoqi@0 | 738 | return false; |
aoqi@0 | 739 | } |
aoqi@0 | 740 | |
aoqi@0 | 741 | static void initialize_performance_counter() { |
aoqi@0 | 742 | LARGE_INTEGER count; |
aoqi@0 | 743 | if (QueryPerformanceFrequency(&count)) { |
aoqi@0 | 744 | has_performance_count = 1; |
aoqi@0 | 745 | performance_frequency = as_long(count); |
aoqi@0 | 746 | QueryPerformanceCounter(&count); |
aoqi@0 | 747 | initial_performance_count = as_long(count); |
aoqi@0 | 748 | } else { |
aoqi@0 | 749 | has_performance_count = 0; |
aoqi@0 | 750 | FILETIME wt; |
aoqi@0 | 751 | GetSystemTimeAsFileTime(&wt); |
aoqi@0 | 752 | first_filetime = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime); |
aoqi@0 | 753 | } |
aoqi@0 | 754 | } |
aoqi@0 | 755 | |
aoqi@0 | 756 | |
aoqi@0 | 757 | double os::elapsedTime() { |
aoqi@0 | 758 | return (double) elapsed_counter() / (double) elapsed_frequency(); |
aoqi@0 | 759 | } |
aoqi@0 | 760 | |
aoqi@0 | 761 | |
aoqi@0 | 762 | // Windows format: |
aoqi@0 | 763 | // The FILETIME structure is a 64-bit value representing the number of 100-nanosecond intervals since January 1, 1601. |
aoqi@0 | 764 | // Java format: |
aoqi@0 | 765 | // Java standards require the number of milliseconds since 1/1/1970 |
aoqi@0 | 766 | |
aoqi@0 | 767 | // Constant offset - calculated using offset() |
aoqi@0 | 768 | static jlong _offset = 116444736000000000; |
aoqi@0 | 769 | // Fake time counter for reproducible results when debugging |
aoqi@0 | 770 | static jlong fake_time = 0; |
aoqi@0 | 771 | |
aoqi@0 | 772 | #ifdef ASSERT |
aoqi@0 | 773 | // Just to be safe, recalculate the offset in debug mode |
aoqi@0 | 774 | static jlong _calculated_offset = 0; |
aoqi@0 | 775 | static int _has_calculated_offset = 0; |
aoqi@0 | 776 | |
aoqi@0 | 777 | jlong offset() { |
aoqi@0 | 778 | if (_has_calculated_offset) return _calculated_offset; |
aoqi@0 | 779 | SYSTEMTIME java_origin; |
aoqi@0 | 780 | java_origin.wYear = 1970; |
aoqi@0 | 781 | java_origin.wMonth = 1; |
aoqi@0 | 782 | java_origin.wDayOfWeek = 0; // ignored |
aoqi@0 | 783 | java_origin.wDay = 1; |
aoqi@0 | 784 | java_origin.wHour = 0; |
aoqi@0 | 785 | java_origin.wMinute = 0; |
aoqi@0 | 786 | java_origin.wSecond = 0; |
aoqi@0 | 787 | java_origin.wMilliseconds = 0; |
aoqi@0 | 788 | FILETIME jot; |
aoqi@0 | 789 | if (!SystemTimeToFileTime(&java_origin, &jot)) { |
aoqi@0 | 790 | fatal(err_msg("Error = %d\nWindows error", GetLastError())); |
aoqi@0 | 791 | } |
aoqi@0 | 792 | _calculated_offset = jlong_from(jot.dwHighDateTime, jot.dwLowDateTime); |
aoqi@0 | 793 | _has_calculated_offset = 1; |
aoqi@0 | 794 | assert(_calculated_offset == _offset, "Calculated and constant time offsets must be equal"); |
aoqi@0 | 795 | return _calculated_offset; |
aoqi@0 | 796 | } |
aoqi@0 | 797 | #else |
aoqi@0 | 798 | jlong offset() { |
aoqi@0 | 799 | return _offset; |
aoqi@0 | 800 | } |
aoqi@0 | 801 | #endif |
aoqi@0 | 802 | |
aoqi@0 | 803 | jlong windows_to_java_time(FILETIME wt) { |
aoqi@0 | 804 | jlong a = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime); |
aoqi@0 | 805 | return (a - offset()) / 10000; |
aoqi@0 | 806 | } |
aoqi@0 | 807 | |
aoqi@0 | 808 | FILETIME java_to_windows_time(jlong l) { |
aoqi@0 | 809 | jlong a = (l * 10000) + offset(); |
aoqi@0 | 810 | FILETIME result; |
aoqi@0 | 811 | result.dwHighDateTime = high(a); |
aoqi@0 | 812 | result.dwLowDateTime = low(a); |
aoqi@0 | 813 | return result; |
aoqi@0 | 814 | } |
aoqi@0 | 815 | |
aoqi@0 | 816 | bool os::supports_vtime() { return true; } |
aoqi@0 | 817 | bool os::enable_vtime() { return false; } |
aoqi@0 | 818 | bool os::vtime_enabled() { return false; } |
aoqi@0 | 819 | |
aoqi@0 | 820 | double os::elapsedVTime() { |
aoqi@0 | 821 | FILETIME created; |
aoqi@0 | 822 | FILETIME exited; |
aoqi@0 | 823 | FILETIME kernel; |
aoqi@0 | 824 | FILETIME user; |
aoqi@0 | 825 | if (GetThreadTimes(GetCurrentThread(), &created, &exited, &kernel, &user) != 0) { |
aoqi@0 | 826 | // the resolution of windows_to_java_time() should be sufficient (ms) |
aoqi@0 | 827 | return (double) (windows_to_java_time(kernel) + windows_to_java_time(user)) / MILLIUNITS; |
aoqi@0 | 828 | } else { |
aoqi@0 | 829 | return elapsedTime(); |
aoqi@0 | 830 | } |
aoqi@0 | 831 | } |
aoqi@0 | 832 | |
aoqi@0 | 833 | jlong os::javaTimeMillis() { |
aoqi@0 | 834 | if (UseFakeTimers) { |
aoqi@0 | 835 | return fake_time++; |
aoqi@0 | 836 | } else { |
aoqi@0 | 837 | FILETIME wt; |
aoqi@0 | 838 | GetSystemTimeAsFileTime(&wt); |
aoqi@0 | 839 | return windows_to_java_time(wt); |
aoqi@0 | 840 | } |
aoqi@0 | 841 | } |
aoqi@0 | 842 | |
aoqi@0 | 843 | jlong os::javaTimeNanos() { |
aoqi@0 | 844 | if (!has_performance_count) { |
aoqi@0 | 845 | return javaTimeMillis() * NANOSECS_PER_MILLISEC; // the best we can do. |
aoqi@0 | 846 | } else { |
aoqi@0 | 847 | LARGE_INTEGER current_count; |
aoqi@0 | 848 | QueryPerformanceCounter(¤t_count); |
aoqi@0 | 849 | double current = as_long(current_count); |
aoqi@0 | 850 | double freq = performance_frequency; |
aoqi@0 | 851 | jlong time = (jlong)((current/freq) * NANOSECS_PER_SEC); |
aoqi@0 | 852 | return time; |
aoqi@0 | 853 | } |
aoqi@0 | 854 | } |
aoqi@0 | 855 | |
aoqi@0 | 856 | void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { |
aoqi@0 | 857 | if (!has_performance_count) { |
aoqi@0 | 858 | // javaTimeMillis() doesn't have much percision, |
aoqi@0 | 859 | // but it is not going to wrap -- so all 64 bits |
aoqi@0 | 860 | info_ptr->max_value = ALL_64_BITS; |
aoqi@0 | 861 | |
aoqi@0 | 862 | // this is a wall clock timer, so may skip |
aoqi@0 | 863 | info_ptr->may_skip_backward = true; |
aoqi@0 | 864 | info_ptr->may_skip_forward = true; |
aoqi@0 | 865 | } else { |
aoqi@0 | 866 | jlong freq = performance_frequency; |
aoqi@0 | 867 | if (freq < NANOSECS_PER_SEC) { |
aoqi@0 | 868 | // the performance counter is 64 bits and we will |
aoqi@0 | 869 | // be multiplying it -- so no wrap in 64 bits |
aoqi@0 | 870 | info_ptr->max_value = ALL_64_BITS; |
aoqi@0 | 871 | } else if (freq > NANOSECS_PER_SEC) { |
aoqi@0 | 872 | // use the max value the counter can reach to |
aoqi@0 | 873 | // determine the max value which could be returned |
aoqi@0 | 874 | julong max_counter = (julong)ALL_64_BITS; |
aoqi@0 | 875 | info_ptr->max_value = (jlong)(max_counter / (freq / NANOSECS_PER_SEC)); |
aoqi@0 | 876 | } else { |
aoqi@0 | 877 | // the performance counter is 64 bits and we will |
aoqi@0 | 878 | // be using it directly -- so no wrap in 64 bits |
aoqi@0 | 879 | info_ptr->max_value = ALL_64_BITS; |
aoqi@0 | 880 | } |
aoqi@0 | 881 | |
aoqi@0 | 882 | // using a counter, so no skipping |
aoqi@0 | 883 | info_ptr->may_skip_backward = false; |
aoqi@0 | 884 | info_ptr->may_skip_forward = false; |
aoqi@0 | 885 | } |
aoqi@0 | 886 | info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time |
aoqi@0 | 887 | } |
aoqi@0 | 888 | |
aoqi@0 | 889 | char* os::local_time_string(char *buf, size_t buflen) { |
aoqi@0 | 890 | SYSTEMTIME st; |
aoqi@0 | 891 | GetLocalTime(&st); |
aoqi@0 | 892 | jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", |
aoqi@0 | 893 | st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond); |
aoqi@0 | 894 | return buf; |
aoqi@0 | 895 | } |
aoqi@0 | 896 | |
aoqi@0 | 897 | bool os::getTimesSecs(double* process_real_time, |
aoqi@0 | 898 | double* process_user_time, |
aoqi@0 | 899 | double* process_system_time) { |
aoqi@0 | 900 | HANDLE h_process = GetCurrentProcess(); |
aoqi@0 | 901 | FILETIME create_time, exit_time, kernel_time, user_time; |
aoqi@0 | 902 | BOOL result = GetProcessTimes(h_process, |
aoqi@0 | 903 | &create_time, |
aoqi@0 | 904 | &exit_time, |
aoqi@0 | 905 | &kernel_time, |
aoqi@0 | 906 | &user_time); |
aoqi@0 | 907 | if (result != 0) { |
aoqi@0 | 908 | FILETIME wt; |
aoqi@0 | 909 | GetSystemTimeAsFileTime(&wt); |
aoqi@0 | 910 | jlong rtc_millis = windows_to_java_time(wt); |
aoqi@0 | 911 | jlong user_millis = windows_to_java_time(user_time); |
aoqi@0 | 912 | jlong system_millis = windows_to_java_time(kernel_time); |
aoqi@0 | 913 | *process_real_time = ((double) rtc_millis) / ((double) MILLIUNITS); |
aoqi@0 | 914 | *process_user_time = ((double) user_millis) / ((double) MILLIUNITS); |
aoqi@0 | 915 | *process_system_time = ((double) system_millis) / ((double) MILLIUNITS); |
aoqi@0 | 916 | return true; |
aoqi@0 | 917 | } else { |
aoqi@0 | 918 | return false; |
aoqi@0 | 919 | } |
aoqi@0 | 920 | } |
aoqi@0 | 921 | |
aoqi@0 | 922 | void os::shutdown() { |
aoqi@0 | 923 | |
aoqi@0 | 924 | // allow PerfMemory to attempt cleanup of any persistent resources |
aoqi@0 | 925 | perfMemory_exit(); |
aoqi@0 | 926 | |
aoqi@0 | 927 | // flush buffered output, finish log files |
aoqi@0 | 928 | ostream_abort(); |
aoqi@0 | 929 | |
aoqi@0 | 930 | // Check for abort hook |
aoqi@0 | 931 | abort_hook_t abort_hook = Arguments::abort_hook(); |
aoqi@0 | 932 | if (abort_hook != NULL) { |
aoqi@0 | 933 | abort_hook(); |
aoqi@0 | 934 | } |
aoqi@0 | 935 | } |
aoqi@0 | 936 | |
aoqi@0 | 937 | |
aoqi@0 | 938 | static BOOL (WINAPI *_MiniDumpWriteDump) ( HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION, |
aoqi@0 | 939 | PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION); |
aoqi@0 | 940 | |
aoqi@0 | 941 | void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) { |
aoqi@0 | 942 | HINSTANCE dbghelp; |
aoqi@0 | 943 | EXCEPTION_POINTERS ep; |
aoqi@0 | 944 | MINIDUMP_EXCEPTION_INFORMATION mei; |
aoqi@0 | 945 | MINIDUMP_EXCEPTION_INFORMATION* pmei; |
aoqi@0 | 946 | |
aoqi@0 | 947 | HANDLE hProcess = GetCurrentProcess(); |
aoqi@0 | 948 | DWORD processId = GetCurrentProcessId(); |
aoqi@0 | 949 | HANDLE dumpFile; |
aoqi@0 | 950 | MINIDUMP_TYPE dumpType; |
aoqi@0 | 951 | static const char* cwd; |
aoqi@0 | 952 | |
aoqi@0 | 953 | // Default is to always create dump for debug builds, on product builds only dump on server versions of Windows. |
aoqi@0 | 954 | #ifndef ASSERT |
aoqi@0 | 955 | // If running on a client version of Windows and user has not explicitly enabled dumping |
aoqi@0 | 956 | if (!os::win32::is_windows_server() && !CreateMinidumpOnCrash) { |
aoqi@0 | 957 | VMError::report_coredump_status("Minidumps are not enabled by default on client versions of Windows", false); |
aoqi@0 | 958 | return; |
aoqi@0 | 959 | // If running on a server version of Windows and user has explictly disabled dumping |
aoqi@0 | 960 | } else if (os::win32::is_windows_server() && !FLAG_IS_DEFAULT(CreateMinidumpOnCrash) && !CreateMinidumpOnCrash) { |
aoqi@0 | 961 | VMError::report_coredump_status("Minidump has been disabled from the command line", false); |
aoqi@0 | 962 | return; |
aoqi@0 | 963 | } |
aoqi@0 | 964 | #else |
aoqi@0 | 965 | if (!FLAG_IS_DEFAULT(CreateMinidumpOnCrash) && !CreateMinidumpOnCrash) { |
aoqi@0 | 966 | VMError::report_coredump_status("Minidump has been disabled from the command line", false); |
aoqi@0 | 967 | return; |
aoqi@0 | 968 | } |
aoqi@0 | 969 | #endif |
aoqi@0 | 970 | |
aoqi@0 | 971 | dbghelp = os::win32::load_Windows_dll("DBGHELP.DLL", NULL, 0); |
aoqi@0 | 972 | |
aoqi@0 | 973 | if (dbghelp == NULL) { |
aoqi@0 | 974 | VMError::report_coredump_status("Failed to load dbghelp.dll", false); |
aoqi@0 | 975 | return; |
aoqi@0 | 976 | } |
aoqi@0 | 977 | |
aoqi@0 | 978 | _MiniDumpWriteDump = CAST_TO_FN_PTR( |
aoqi@0 | 979 | BOOL(WINAPI *)( HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION, |
aoqi@0 | 980 | PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION), |
aoqi@0 | 981 | GetProcAddress(dbghelp, "MiniDumpWriteDump")); |
aoqi@0 | 982 | |
aoqi@0 | 983 | if (_MiniDumpWriteDump == NULL) { |
aoqi@0 | 984 | VMError::report_coredump_status("Failed to find MiniDumpWriteDump() in module dbghelp.dll", false); |
aoqi@0 | 985 | return; |
aoqi@0 | 986 | } |
aoqi@0 | 987 | |
aoqi@0 | 988 | dumpType = (MINIDUMP_TYPE)(MiniDumpWithFullMemory | MiniDumpWithHandleData); |
aoqi@0 | 989 | |
aoqi@0 | 990 | // Older versions of dbghelp.h doesn't contain all the dumptypes we want, dbghelp.h with |
aoqi@0 | 991 | // API_VERSION_NUMBER 11 or higher contains the ones we want though |
aoqi@0 | 992 | #if API_VERSION_NUMBER >= 11 |
aoqi@0 | 993 | dumpType = (MINIDUMP_TYPE)(dumpType | MiniDumpWithFullMemoryInfo | MiniDumpWithThreadInfo | |
aoqi@0 | 994 | MiniDumpWithUnloadedModules); |
aoqi@0 | 995 | #endif |
aoqi@0 | 996 | |
aoqi@0 | 997 | cwd = get_current_directory(NULL, 0); |
aoqi@0 | 998 | jio_snprintf(buffer, bufferSize, "%s\\hs_err_pid%u.mdmp",cwd, current_process_id()); |
aoqi@0 | 999 | dumpFile = CreateFile(buffer, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
aoqi@0 | 1000 | |
aoqi@0 | 1001 | if (dumpFile == INVALID_HANDLE_VALUE) { |
aoqi@0 | 1002 | VMError::report_coredump_status("Failed to create file for dumping", false); |
aoqi@0 | 1003 | return; |
aoqi@0 | 1004 | } |
aoqi@0 | 1005 | if (exceptionRecord != NULL && contextRecord != NULL) { |
aoqi@0 | 1006 | ep.ContextRecord = (PCONTEXT) contextRecord; |
aoqi@0 | 1007 | ep.ExceptionRecord = (PEXCEPTION_RECORD) exceptionRecord; |
aoqi@0 | 1008 | |
aoqi@0 | 1009 | mei.ThreadId = GetCurrentThreadId(); |
aoqi@0 | 1010 | mei.ExceptionPointers = &ep; |
aoqi@0 | 1011 | pmei = &mei; |
aoqi@0 | 1012 | } else { |
aoqi@0 | 1013 | pmei = NULL; |
aoqi@0 | 1014 | } |
aoqi@0 | 1015 | |
aoqi@0 | 1016 | |
aoqi@0 | 1017 | // Older versions of dbghelp.dll (the one shipped with Win2003 for example) may not support all |
aoqi@0 | 1018 | // the dump types we really want. If first call fails, lets fall back to just use MiniDumpWithFullMemory then. |
aoqi@0 | 1019 | if (_MiniDumpWriteDump(hProcess, processId, dumpFile, dumpType, pmei, NULL, NULL) == false && |
aoqi@0 | 1020 | _MiniDumpWriteDump(hProcess, processId, dumpFile, (MINIDUMP_TYPE)MiniDumpWithFullMemory, pmei, NULL, NULL) == false) { |
aoqi@0 | 1021 | DWORD error = GetLastError(); |
aoqi@0 | 1022 | LPTSTR msgbuf = NULL; |
aoqi@0 | 1023 | |
aoqi@0 | 1024 | if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | |
aoqi@0 | 1025 | FORMAT_MESSAGE_FROM_SYSTEM | |
aoqi@0 | 1026 | FORMAT_MESSAGE_IGNORE_INSERTS, |
aoqi@0 | 1027 | NULL, error, 0, (LPTSTR)&msgbuf, 0, NULL) != 0) { |
aoqi@0 | 1028 | |
aoqi@0 | 1029 | jio_snprintf(buffer, bufferSize, "Call to MiniDumpWriteDump() failed (Error 0x%x: %s)", error, msgbuf); |
aoqi@0 | 1030 | LocalFree(msgbuf); |
aoqi@0 | 1031 | } else { |
aoqi@0 | 1032 | // Call to FormatMessage failed, just include the result from GetLastError |
aoqi@0 | 1033 | jio_snprintf(buffer, bufferSize, "Call to MiniDumpWriteDump() failed (Error 0x%x)", error); |
aoqi@0 | 1034 | } |
aoqi@0 | 1035 | VMError::report_coredump_status(buffer, false); |
aoqi@0 | 1036 | } else { |
aoqi@0 | 1037 | VMError::report_coredump_status(buffer, true); |
aoqi@0 | 1038 | } |
aoqi@0 | 1039 | |
aoqi@0 | 1040 | CloseHandle(dumpFile); |
aoqi@0 | 1041 | } |
aoqi@0 | 1042 | |
aoqi@0 | 1043 | |
aoqi@0 | 1044 | |
aoqi@0 | 1045 | void os::abort(bool dump_core) |
aoqi@0 | 1046 | { |
aoqi@0 | 1047 | os::shutdown(); |
aoqi@0 | 1048 | // no core dump on Windows |
aoqi@0 | 1049 | ::exit(1); |
aoqi@0 | 1050 | } |
aoqi@0 | 1051 | |
aoqi@0 | 1052 | // Die immediately, no exit hook, no abort hook, no cleanup. |
aoqi@0 | 1053 | void os::die() { |
aoqi@0 | 1054 | _exit(-1); |
aoqi@0 | 1055 | } |
aoqi@0 | 1056 | |
aoqi@0 | 1057 | // Directory routines copied from src/win32/native/java/io/dirent_md.c |
aoqi@0 | 1058 | // * dirent_md.c 1.15 00/02/02 |
aoqi@0 | 1059 | // |
aoqi@0 | 1060 | // The declarations for DIR and struct dirent are in jvm_win32.h. |
aoqi@0 | 1061 | |
aoqi@0 | 1062 | /* Caller must have already run dirname through JVM_NativePath, which removes |
aoqi@0 | 1063 | duplicate slashes and converts all instances of '/' into '\\'. */ |
aoqi@0 | 1064 | |
aoqi@0 | 1065 | DIR * |
aoqi@0 | 1066 | os::opendir(const char *dirname) |
aoqi@0 | 1067 | { |
aoqi@0 | 1068 | assert(dirname != NULL, "just checking"); // hotspot change |
aoqi@0 | 1069 | DIR *dirp = (DIR *)malloc(sizeof(DIR), mtInternal); |
aoqi@0 | 1070 | DWORD fattr; // hotspot change |
aoqi@0 | 1071 | char alt_dirname[4] = { 0, 0, 0, 0 }; |
aoqi@0 | 1072 | |
aoqi@0 | 1073 | if (dirp == 0) { |
aoqi@0 | 1074 | errno = ENOMEM; |
aoqi@0 | 1075 | return 0; |
aoqi@0 | 1076 | } |
aoqi@0 | 1077 | |
aoqi@0 | 1078 | /* |
aoqi@0 | 1079 | * Win32 accepts "\" in its POSIX stat(), but refuses to treat it |
aoqi@0 | 1080 | * as a directory in FindFirstFile(). We detect this case here and |
aoqi@0 | 1081 | * prepend the current drive name. |
aoqi@0 | 1082 | */ |
aoqi@0 | 1083 | if (dirname[1] == '\0' && dirname[0] == '\\') { |
aoqi@0 | 1084 | alt_dirname[0] = _getdrive() + 'A' - 1; |
aoqi@0 | 1085 | alt_dirname[1] = ':'; |
aoqi@0 | 1086 | alt_dirname[2] = '\\'; |
aoqi@0 | 1087 | alt_dirname[3] = '\0'; |
aoqi@0 | 1088 | dirname = alt_dirname; |
aoqi@0 | 1089 | } |
aoqi@0 | 1090 | |
aoqi@0 | 1091 | dirp->path = (char *)malloc(strlen(dirname) + 5, mtInternal); |
aoqi@0 | 1092 | if (dirp->path == 0) { |
aoqi@0 | 1093 | free(dirp, mtInternal); |
aoqi@0 | 1094 | errno = ENOMEM; |
aoqi@0 | 1095 | return 0; |
aoqi@0 | 1096 | } |
aoqi@0 | 1097 | strcpy(dirp->path, dirname); |
aoqi@0 | 1098 | |
aoqi@0 | 1099 | fattr = GetFileAttributes(dirp->path); |
aoqi@0 | 1100 | if (fattr == 0xffffffff) { |
aoqi@0 | 1101 | free(dirp->path, mtInternal); |
aoqi@0 | 1102 | free(dirp, mtInternal); |
aoqi@0 | 1103 | errno = ENOENT; |
aoqi@0 | 1104 | return 0; |
aoqi@0 | 1105 | } else if ((fattr & FILE_ATTRIBUTE_DIRECTORY) == 0) { |
aoqi@0 | 1106 | free(dirp->path, mtInternal); |
aoqi@0 | 1107 | free(dirp, mtInternal); |
aoqi@0 | 1108 | errno = ENOTDIR; |
aoqi@0 | 1109 | return 0; |
aoqi@0 | 1110 | } |
aoqi@0 | 1111 | |
aoqi@0 | 1112 | /* Append "*.*", or possibly "\\*.*", to path */ |
aoqi@0 | 1113 | if (dirp->path[1] == ':' |
aoqi@0 | 1114 | && (dirp->path[2] == '\0' |
aoqi@0 | 1115 | || (dirp->path[2] == '\\' && dirp->path[3] == '\0'))) { |
aoqi@0 | 1116 | /* No '\\' needed for cases like "Z:" or "Z:\" */ |
aoqi@0 | 1117 | strcat(dirp->path, "*.*"); |
aoqi@0 | 1118 | } else { |
aoqi@0 | 1119 | strcat(dirp->path, "\\*.*"); |
aoqi@0 | 1120 | } |
aoqi@0 | 1121 | |
aoqi@0 | 1122 | dirp->handle = FindFirstFile(dirp->path, &dirp->find_data); |
aoqi@0 | 1123 | if (dirp->handle == INVALID_HANDLE_VALUE) { |
aoqi@0 | 1124 | if (GetLastError() != ERROR_FILE_NOT_FOUND) { |
aoqi@0 | 1125 | free(dirp->path, mtInternal); |
aoqi@0 | 1126 | free(dirp, mtInternal); |
aoqi@0 | 1127 | errno = EACCES; |
aoqi@0 | 1128 | return 0; |
aoqi@0 | 1129 | } |
aoqi@0 | 1130 | } |
aoqi@0 | 1131 | return dirp; |
aoqi@0 | 1132 | } |
aoqi@0 | 1133 | |
aoqi@0 | 1134 | /* parameter dbuf unused on Windows */ |
aoqi@0 | 1135 | |
aoqi@0 | 1136 | struct dirent * |
aoqi@0 | 1137 | os::readdir(DIR *dirp, dirent *dbuf) |
aoqi@0 | 1138 | { |
aoqi@0 | 1139 | assert(dirp != NULL, "just checking"); // hotspot change |
aoqi@0 | 1140 | if (dirp->handle == INVALID_HANDLE_VALUE) { |
aoqi@0 | 1141 | return 0; |
aoqi@0 | 1142 | } |
aoqi@0 | 1143 | |
aoqi@0 | 1144 | strcpy(dirp->dirent.d_name, dirp->find_data.cFileName); |
aoqi@0 | 1145 | |
aoqi@0 | 1146 | if (!FindNextFile(dirp->handle, &dirp->find_data)) { |
aoqi@0 | 1147 | if (GetLastError() == ERROR_INVALID_HANDLE) { |
aoqi@0 | 1148 | errno = EBADF; |
aoqi@0 | 1149 | return 0; |
aoqi@0 | 1150 | } |
aoqi@0 | 1151 | FindClose(dirp->handle); |
aoqi@0 | 1152 | dirp->handle = INVALID_HANDLE_VALUE; |
aoqi@0 | 1153 | } |
aoqi@0 | 1154 | |
aoqi@0 | 1155 | return &dirp->dirent; |
aoqi@0 | 1156 | } |
aoqi@0 | 1157 | |
aoqi@0 | 1158 | int |
aoqi@0 | 1159 | os::closedir(DIR *dirp) |
aoqi@0 | 1160 | { |
aoqi@0 | 1161 | assert(dirp != NULL, "just checking"); // hotspot change |
aoqi@0 | 1162 | if (dirp->handle != INVALID_HANDLE_VALUE) { |
aoqi@0 | 1163 | if (!FindClose(dirp->handle)) { |
aoqi@0 | 1164 | errno = EBADF; |
aoqi@0 | 1165 | return -1; |
aoqi@0 | 1166 | } |
aoqi@0 | 1167 | dirp->handle = INVALID_HANDLE_VALUE; |
aoqi@0 | 1168 | } |
aoqi@0 | 1169 | free(dirp->path, mtInternal); |
aoqi@0 | 1170 | free(dirp, mtInternal); |
aoqi@0 | 1171 | return 0; |
aoqi@0 | 1172 | } |
aoqi@0 | 1173 | |
aoqi@0 | 1174 | // This must be hard coded because it's the system's temporary |
aoqi@0 | 1175 | // directory not the java application's temp directory, ala java.io.tmpdir. |
aoqi@0 | 1176 | const char* os::get_temp_directory() { |
aoqi@0 | 1177 | static char path_buf[MAX_PATH]; |
aoqi@0 | 1178 | if (GetTempPath(MAX_PATH, path_buf)>0) |
aoqi@0 | 1179 | return path_buf; |
aoqi@0 | 1180 | else{ |
aoqi@0 | 1181 | path_buf[0]='\0'; |
aoqi@0 | 1182 | return path_buf; |
aoqi@0 | 1183 | } |
aoqi@0 | 1184 | } |
aoqi@0 | 1185 | |
aoqi@0 | 1186 | static bool file_exists(const char* filename) { |
aoqi@0 | 1187 | if (filename == NULL || strlen(filename) == 0) { |
aoqi@0 | 1188 | return false; |
aoqi@0 | 1189 | } |
aoqi@0 | 1190 | return GetFileAttributes(filename) != INVALID_FILE_ATTRIBUTES; |
aoqi@0 | 1191 | } |
aoqi@0 | 1192 | |
aoqi@0 | 1193 | bool os::dll_build_name(char *buffer, size_t buflen, |
aoqi@0 | 1194 | const char* pname, const char* fname) { |
aoqi@0 | 1195 | bool retval = false; |
aoqi@0 | 1196 | const size_t pnamelen = pname ? strlen(pname) : 0; |
aoqi@0 | 1197 | const char c = (pnamelen > 0) ? pname[pnamelen-1] : 0; |
aoqi@0 | 1198 | |
aoqi@0 | 1199 | // Return error on buffer overflow. |
aoqi@0 | 1200 | if (pnamelen + strlen(fname) + 10 > buflen) { |
aoqi@0 | 1201 | return retval; |
aoqi@0 | 1202 | } |
aoqi@0 | 1203 | |
aoqi@0 | 1204 | if (pnamelen == 0) { |
aoqi@0 | 1205 | jio_snprintf(buffer, buflen, "%s.dll", fname); |
aoqi@0 | 1206 | retval = true; |
aoqi@0 | 1207 | } else if (c == ':' || c == '\\') { |
aoqi@0 | 1208 | jio_snprintf(buffer, buflen, "%s%s.dll", pname, fname); |
aoqi@0 | 1209 | retval = true; |
aoqi@0 | 1210 | } else if (strchr(pname, *os::path_separator()) != NULL) { |
aoqi@0 | 1211 | int n; |
aoqi@0 | 1212 | char** pelements = split_path(pname, &n); |
aoqi@0 | 1213 | if (pelements == NULL) { |
aoqi@0 | 1214 | return false; |
aoqi@0 | 1215 | } |
aoqi@0 | 1216 | for (int i = 0 ; i < n ; i++) { |
aoqi@0 | 1217 | char* path = pelements[i]; |
aoqi@0 | 1218 | // Really shouldn't be NULL, but check can't hurt |
aoqi@0 | 1219 | size_t plen = (path == NULL) ? 0 : strlen(path); |
aoqi@0 | 1220 | if (plen == 0) { |
aoqi@0 | 1221 | continue; // skip the empty path values |
aoqi@0 | 1222 | } |
aoqi@0 | 1223 | const char lastchar = path[plen - 1]; |
aoqi@0 | 1224 | if (lastchar == ':' || lastchar == '\\') { |
aoqi@0 | 1225 | jio_snprintf(buffer, buflen, "%s%s.dll", path, fname); |
aoqi@0 | 1226 | } else { |
aoqi@0 | 1227 | jio_snprintf(buffer, buflen, "%s\\%s.dll", path, fname); |
aoqi@0 | 1228 | } |
aoqi@0 | 1229 | if (file_exists(buffer)) { |
aoqi@0 | 1230 | retval = true; |
aoqi@0 | 1231 | break; |
aoqi@0 | 1232 | } |
aoqi@0 | 1233 | } |
aoqi@0 | 1234 | // release the storage |
aoqi@0 | 1235 | for (int i = 0 ; i < n ; i++) { |
aoqi@0 | 1236 | if (pelements[i] != NULL) { |
aoqi@0 | 1237 | FREE_C_HEAP_ARRAY(char, pelements[i], mtInternal); |
aoqi@0 | 1238 | } |
aoqi@0 | 1239 | } |
aoqi@0 | 1240 | if (pelements != NULL) { |
aoqi@0 | 1241 | FREE_C_HEAP_ARRAY(char*, pelements, mtInternal); |
aoqi@0 | 1242 | } |
aoqi@0 | 1243 | } else { |
aoqi@0 | 1244 | jio_snprintf(buffer, buflen, "%s\\%s.dll", pname, fname); |
aoqi@0 | 1245 | retval = true; |
aoqi@0 | 1246 | } |
aoqi@0 | 1247 | return retval; |
aoqi@0 | 1248 | } |
aoqi@0 | 1249 | |
aoqi@0 | 1250 | // Needs to be in os specific directory because windows requires another |
aoqi@0 | 1251 | // header file <direct.h> |
aoqi@0 | 1252 | const char* os::get_current_directory(char *buf, size_t buflen) { |
aoqi@0 | 1253 | int n = static_cast<int>(buflen); |
aoqi@0 | 1254 | if (buflen > INT_MAX) n = INT_MAX; |
aoqi@0 | 1255 | return _getcwd(buf, n); |
aoqi@0 | 1256 | } |
aoqi@0 | 1257 | |
aoqi@0 | 1258 | //----------------------------------------------------------- |
aoqi@0 | 1259 | // Helper functions for fatal error handler |
aoqi@0 | 1260 | #ifdef _WIN64 |
aoqi@0 | 1261 | // Helper routine which returns true if address in |
aoqi@0 | 1262 | // within the NTDLL address space. |
aoqi@0 | 1263 | // |
aoqi@0 | 1264 | static bool _addr_in_ntdll( address addr ) |
aoqi@0 | 1265 | { |
aoqi@0 | 1266 | HMODULE hmod; |
aoqi@0 | 1267 | MODULEINFO minfo; |
aoqi@0 | 1268 | |
aoqi@0 | 1269 | hmod = GetModuleHandle("NTDLL.DLL"); |
aoqi@0 | 1270 | if ( hmod == NULL ) return false; |
aoqi@0 | 1271 | if ( !os::PSApiDll::GetModuleInformation( GetCurrentProcess(), hmod, |
aoqi@0 | 1272 | &minfo, sizeof(MODULEINFO)) ) |
aoqi@0 | 1273 | return false; |
aoqi@0 | 1274 | |
aoqi@0 | 1275 | if ( (addr >= minfo.lpBaseOfDll) && |
aoqi@0 | 1276 | (addr < (address)((uintptr_t)minfo.lpBaseOfDll + (uintptr_t)minfo.SizeOfImage))) |
aoqi@0 | 1277 | return true; |
aoqi@0 | 1278 | else |
aoqi@0 | 1279 | return false; |
aoqi@0 | 1280 | } |
aoqi@0 | 1281 | #endif |
aoqi@0 | 1282 | |
aoqi@0 | 1283 | |
aoqi@0 | 1284 | // Enumerate all modules for a given process ID |
aoqi@0 | 1285 | // |
aoqi@0 | 1286 | // Notice that Windows 95/98/Me and Windows NT/2000/XP have |
aoqi@0 | 1287 | // different API for doing this. We use PSAPI.DLL on NT based |
aoqi@0 | 1288 | // Windows and ToolHelp on 95/98/Me. |
aoqi@0 | 1289 | |
aoqi@0 | 1290 | // Callback function that is called by enumerate_modules() on |
aoqi@0 | 1291 | // every DLL module. |
aoqi@0 | 1292 | // Input parameters: |
aoqi@0 | 1293 | // int pid, |
aoqi@0 | 1294 | // char* module_file_name, |
aoqi@0 | 1295 | // address module_base_addr, |
aoqi@0 | 1296 | // unsigned module_size, |
aoqi@0 | 1297 | // void* param |
aoqi@0 | 1298 | typedef int (*EnumModulesCallbackFunc)(int, char *, address, unsigned, void *); |
aoqi@0 | 1299 | |
aoqi@0 | 1300 | // enumerate_modules for Windows NT, using PSAPI |
aoqi@0 | 1301 | static int _enumerate_modules_winnt( int pid, EnumModulesCallbackFunc func, void * param) |
aoqi@0 | 1302 | { |
aoqi@0 | 1303 | HANDLE hProcess ; |
aoqi@0 | 1304 | |
aoqi@0 | 1305 | # define MAX_NUM_MODULES 128 |
aoqi@0 | 1306 | HMODULE modules[MAX_NUM_MODULES]; |
aoqi@0 | 1307 | static char filename[ MAX_PATH ]; |
aoqi@0 | 1308 | int result = 0; |
aoqi@0 | 1309 | |
aoqi@0 | 1310 | if (!os::PSApiDll::PSApiAvailable()) { |
aoqi@0 | 1311 | return 0; |
aoqi@0 | 1312 | } |
aoqi@0 | 1313 | |
aoqi@0 | 1314 | hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, |
aoqi@0 | 1315 | FALSE, pid ) ; |
aoqi@0 | 1316 | if (hProcess == NULL) return 0; |
aoqi@0 | 1317 | |
aoqi@0 | 1318 | DWORD size_needed; |
aoqi@0 | 1319 | if (!os::PSApiDll::EnumProcessModules(hProcess, modules, |
aoqi@0 | 1320 | sizeof(modules), &size_needed)) { |
aoqi@0 | 1321 | CloseHandle( hProcess ); |
aoqi@0 | 1322 | return 0; |
aoqi@0 | 1323 | } |
aoqi@0 | 1324 | |
aoqi@0 | 1325 | // number of modules that are currently loaded |
aoqi@0 | 1326 | int num_modules = size_needed / sizeof(HMODULE); |
aoqi@0 | 1327 | |
aoqi@0 | 1328 | for (int i = 0; i < MIN2(num_modules, MAX_NUM_MODULES); i++) { |
aoqi@0 | 1329 | // Get Full pathname: |
aoqi@0 | 1330 | if(!os::PSApiDll::GetModuleFileNameEx(hProcess, modules[i], |
aoqi@0 | 1331 | filename, sizeof(filename))) { |
aoqi@0 | 1332 | filename[0] = '\0'; |
aoqi@0 | 1333 | } |
aoqi@0 | 1334 | |
aoqi@0 | 1335 | MODULEINFO modinfo; |
aoqi@0 | 1336 | if (!os::PSApiDll::GetModuleInformation(hProcess, modules[i], |
aoqi@0 | 1337 | &modinfo, sizeof(modinfo))) { |
aoqi@0 | 1338 | modinfo.lpBaseOfDll = NULL; |
aoqi@0 | 1339 | modinfo.SizeOfImage = 0; |
aoqi@0 | 1340 | } |
aoqi@0 | 1341 | |
aoqi@0 | 1342 | // Invoke callback function |
aoqi@0 | 1343 | result = func(pid, filename, (address)modinfo.lpBaseOfDll, |
aoqi@0 | 1344 | modinfo.SizeOfImage, param); |
aoqi@0 | 1345 | if (result) break; |
aoqi@0 | 1346 | } |
aoqi@0 | 1347 | |
aoqi@0 | 1348 | CloseHandle( hProcess ) ; |
aoqi@0 | 1349 | return result; |
aoqi@0 | 1350 | } |
aoqi@0 | 1351 | |
aoqi@0 | 1352 | |
aoqi@0 | 1353 | // enumerate_modules for Windows 95/98/ME, using TOOLHELP |
aoqi@0 | 1354 | static int _enumerate_modules_windows( int pid, EnumModulesCallbackFunc func, void *param) |
aoqi@0 | 1355 | { |
aoqi@0 | 1356 | HANDLE hSnapShot ; |
aoqi@0 | 1357 | static MODULEENTRY32 modentry ; |
aoqi@0 | 1358 | int result = 0; |
aoqi@0 | 1359 | |
aoqi@0 | 1360 | if (!os::Kernel32Dll::HelpToolsAvailable()) { |
aoqi@0 | 1361 | return 0; |
aoqi@0 | 1362 | } |
aoqi@0 | 1363 | |
aoqi@0 | 1364 | // Get a handle to a Toolhelp snapshot of the system |
aoqi@0 | 1365 | hSnapShot = os::Kernel32Dll::CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, pid ) ; |
aoqi@0 | 1366 | if( hSnapShot == INVALID_HANDLE_VALUE ) { |
aoqi@0 | 1367 | return FALSE ; |
aoqi@0 | 1368 | } |
aoqi@0 | 1369 | |
aoqi@0 | 1370 | // iterate through all modules |
aoqi@0 | 1371 | modentry.dwSize = sizeof(MODULEENTRY32) ; |
aoqi@0 | 1372 | bool not_done = os::Kernel32Dll::Module32First( hSnapShot, &modentry ) != 0; |
aoqi@0 | 1373 | |
aoqi@0 | 1374 | while( not_done ) { |
aoqi@0 | 1375 | // invoke the callback |
aoqi@0 | 1376 | result=func(pid, modentry.szExePath, (address)modentry.modBaseAddr, |
aoqi@0 | 1377 | modentry.modBaseSize, param); |
aoqi@0 | 1378 | if (result) break; |
aoqi@0 | 1379 | |
aoqi@0 | 1380 | modentry.dwSize = sizeof(MODULEENTRY32) ; |
aoqi@0 | 1381 | not_done = os::Kernel32Dll::Module32Next( hSnapShot, &modentry ) != 0; |
aoqi@0 | 1382 | } |
aoqi@0 | 1383 | |
aoqi@0 | 1384 | CloseHandle(hSnapShot); |
aoqi@0 | 1385 | return result; |
aoqi@0 | 1386 | } |
aoqi@0 | 1387 | |
aoqi@0 | 1388 | int enumerate_modules( int pid, EnumModulesCallbackFunc func, void * param ) |
aoqi@0 | 1389 | { |
aoqi@0 | 1390 | // Get current process ID if caller doesn't provide it. |
aoqi@0 | 1391 | if (!pid) pid = os::current_process_id(); |
aoqi@0 | 1392 | |
aoqi@0 | 1393 | if (os::win32::is_nt()) return _enumerate_modules_winnt (pid, func, param); |
aoqi@0 | 1394 | else return _enumerate_modules_windows(pid, func, param); |
aoqi@0 | 1395 | } |
aoqi@0 | 1396 | |
aoqi@0 | 1397 | struct _modinfo { |
aoqi@0 | 1398 | address addr; |
aoqi@0 | 1399 | char* full_path; // point to a char buffer |
aoqi@0 | 1400 | int buflen; // size of the buffer |
aoqi@0 | 1401 | address base_addr; |
aoqi@0 | 1402 | }; |
aoqi@0 | 1403 | |
aoqi@0 | 1404 | static int _locate_module_by_addr(int pid, char * mod_fname, address base_addr, |
aoqi@0 | 1405 | unsigned size, void * param) { |
aoqi@0 | 1406 | struct _modinfo *pmod = (struct _modinfo *)param; |
aoqi@0 | 1407 | if (!pmod) return -1; |
aoqi@0 | 1408 | |
aoqi@0 | 1409 | if (base_addr <= pmod->addr && |
aoqi@0 | 1410 | base_addr+size > pmod->addr) { |
aoqi@0 | 1411 | // if a buffer is provided, copy path name to the buffer |
aoqi@0 | 1412 | if (pmod->full_path) { |
aoqi@0 | 1413 | jio_snprintf(pmod->full_path, pmod->buflen, "%s", mod_fname); |
aoqi@0 | 1414 | } |
aoqi@0 | 1415 | pmod->base_addr = base_addr; |
aoqi@0 | 1416 | return 1; |
aoqi@0 | 1417 | } |
aoqi@0 | 1418 | return 0; |
aoqi@0 | 1419 | } |
aoqi@0 | 1420 | |
aoqi@0 | 1421 | bool os::dll_address_to_library_name(address addr, char* buf, |
aoqi@0 | 1422 | int buflen, int* offset) { |
aoqi@0 | 1423 | // buf is not optional, but offset is optional |
aoqi@0 | 1424 | assert(buf != NULL, "sanity check"); |
aoqi@0 | 1425 | |
aoqi@0 | 1426 | // NOTE: the reason we don't use SymGetModuleInfo() is it doesn't always |
aoqi@0 | 1427 | // return the full path to the DLL file, sometimes it returns path |
aoqi@0 | 1428 | // to the corresponding PDB file (debug info); sometimes it only |
aoqi@0 | 1429 | // returns partial path, which makes life painful. |
aoqi@0 | 1430 | |
aoqi@0 | 1431 | struct _modinfo mi; |
aoqi@0 | 1432 | mi.addr = addr; |
aoqi@0 | 1433 | mi.full_path = buf; |
aoqi@0 | 1434 | mi.buflen = buflen; |
aoqi@0 | 1435 | int pid = os::current_process_id(); |
aoqi@0 | 1436 | if (enumerate_modules(pid, _locate_module_by_addr, (void *)&mi)) { |
aoqi@0 | 1437 | // buf already contains path name |
aoqi@0 | 1438 | if (offset) *offset = addr - mi.base_addr; |
aoqi@0 | 1439 | return true; |
aoqi@0 | 1440 | } |
aoqi@0 | 1441 | |
aoqi@0 | 1442 | buf[0] = '\0'; |
aoqi@0 | 1443 | if (offset) *offset = -1; |
aoqi@0 | 1444 | return false; |
aoqi@0 | 1445 | } |
aoqi@0 | 1446 | |
aoqi@0 | 1447 | bool os::dll_address_to_function_name(address addr, char *buf, |
aoqi@0 | 1448 | int buflen, int *offset) { |
aoqi@0 | 1449 | // buf is not optional, but offset is optional |
aoqi@0 | 1450 | assert(buf != NULL, "sanity check"); |
aoqi@0 | 1451 | |
aoqi@0 | 1452 | if (Decoder::decode(addr, buf, buflen, offset)) { |
aoqi@0 | 1453 | return true; |
aoqi@0 | 1454 | } |
aoqi@0 | 1455 | if (offset != NULL) *offset = -1; |
aoqi@0 | 1456 | buf[0] = '\0'; |
aoqi@0 | 1457 | return false; |
aoqi@0 | 1458 | } |
aoqi@0 | 1459 | |
aoqi@0 | 1460 | // save the start and end address of jvm.dll into param[0] and param[1] |
aoqi@0 | 1461 | static int _locate_jvm_dll(int pid, char* mod_fname, address base_addr, |
aoqi@0 | 1462 | unsigned size, void * param) { |
aoqi@0 | 1463 | if (!param) return -1; |
aoqi@0 | 1464 | |
aoqi@0 | 1465 | if (base_addr <= (address)_locate_jvm_dll && |
aoqi@0 | 1466 | base_addr+size > (address)_locate_jvm_dll) { |
aoqi@0 | 1467 | ((address*)param)[0] = base_addr; |
aoqi@0 | 1468 | ((address*)param)[1] = base_addr + size; |
aoqi@0 | 1469 | return 1; |
aoqi@0 | 1470 | } |
aoqi@0 | 1471 | return 0; |
aoqi@0 | 1472 | } |
aoqi@0 | 1473 | |
aoqi@0 | 1474 | address vm_lib_location[2]; // start and end address of jvm.dll |
aoqi@0 | 1475 | |
aoqi@0 | 1476 | // check if addr is inside jvm.dll |
aoqi@0 | 1477 | bool os::address_is_in_vm(address addr) { |
aoqi@0 | 1478 | if (!vm_lib_location[0] || !vm_lib_location[1]) { |
aoqi@0 | 1479 | int pid = os::current_process_id(); |
aoqi@0 | 1480 | if (!enumerate_modules(pid, _locate_jvm_dll, (void *)vm_lib_location)) { |
aoqi@0 | 1481 | assert(false, "Can't find jvm module."); |
aoqi@0 | 1482 | return false; |
aoqi@0 | 1483 | } |
aoqi@0 | 1484 | } |
aoqi@0 | 1485 | |
aoqi@0 | 1486 | return (vm_lib_location[0] <= addr) && (addr < vm_lib_location[1]); |
aoqi@0 | 1487 | } |
aoqi@0 | 1488 | |
aoqi@0 | 1489 | // print module info; param is outputStream* |
aoqi@0 | 1490 | static int _print_module(int pid, char* fname, address base, |
aoqi@0 | 1491 | unsigned size, void* param) { |
aoqi@0 | 1492 | if (!param) return -1; |
aoqi@0 | 1493 | |
aoqi@0 | 1494 | outputStream* st = (outputStream*)param; |
aoqi@0 | 1495 | |
aoqi@0 | 1496 | address end_addr = base + size; |
aoqi@0 | 1497 | st->print(PTR_FORMAT " - " PTR_FORMAT " \t%s\n", base, end_addr, fname); |
aoqi@0 | 1498 | return 0; |
aoqi@0 | 1499 | } |
aoqi@0 | 1500 | |
aoqi@0 | 1501 | // Loads .dll/.so and |
aoqi@0 | 1502 | // in case of error it checks if .dll/.so was built for the |
aoqi@0 | 1503 | // same architecture as Hotspot is running on |
aoqi@0 | 1504 | void * os::dll_load(const char *name, char *ebuf, int ebuflen) |
aoqi@0 | 1505 | { |
aoqi@0 | 1506 | void * result = LoadLibrary(name); |
aoqi@0 | 1507 | if (result != NULL) |
aoqi@0 | 1508 | { |
aoqi@0 | 1509 | return result; |
aoqi@0 | 1510 | } |
aoqi@0 | 1511 | |
aoqi@0 | 1512 | DWORD errcode = GetLastError(); |
aoqi@0 | 1513 | if (errcode == ERROR_MOD_NOT_FOUND) { |
aoqi@0 | 1514 | strncpy(ebuf, "Can't find dependent libraries", ebuflen-1); |
aoqi@0 | 1515 | ebuf[ebuflen-1]='\0'; |
aoqi@0 | 1516 | return NULL; |
aoqi@0 | 1517 | } |
aoqi@0 | 1518 | |
aoqi@0 | 1519 | // Parsing dll below |
aoqi@0 | 1520 | // If we can read dll-info and find that dll was built |
aoqi@0 | 1521 | // for an architecture other than Hotspot is running in |
aoqi@0 | 1522 | // - then print to buffer "DLL was built for a different architecture" |
aoqi@0 | 1523 | // else call os::lasterror to obtain system error message |
aoqi@0 | 1524 | |
aoqi@0 | 1525 | // Read system error message into ebuf |
aoqi@0 | 1526 | // It may or may not be overwritten below (in the for loop and just above) |
aoqi@0 | 1527 | lasterror(ebuf, (size_t) ebuflen); |
aoqi@0 | 1528 | ebuf[ebuflen-1]='\0'; |
aoqi@0 | 1529 | int file_descriptor=::open(name, O_RDONLY | O_BINARY, 0); |
aoqi@0 | 1530 | if (file_descriptor<0) |
aoqi@0 | 1531 | { |
aoqi@0 | 1532 | return NULL; |
aoqi@0 | 1533 | } |
aoqi@0 | 1534 | |
aoqi@0 | 1535 | uint32_t signature_offset; |
aoqi@0 | 1536 | uint16_t lib_arch=0; |
aoqi@0 | 1537 | bool failed_to_get_lib_arch= |
aoqi@0 | 1538 | ( |
aoqi@0 | 1539 | //Go to position 3c in the dll |
aoqi@0 | 1540 | (os::seek_to_file_offset(file_descriptor,IMAGE_FILE_PTR_TO_SIGNATURE)<0) |
aoqi@0 | 1541 | || |
aoqi@0 | 1542 | // Read loacation of signature |
aoqi@0 | 1543 | (sizeof(signature_offset)!= |
aoqi@0 | 1544 | (os::read(file_descriptor, (void*)&signature_offset,sizeof(signature_offset)))) |
aoqi@0 | 1545 | || |
aoqi@0 | 1546 | //Go to COFF File Header in dll |
aoqi@0 | 1547 | //that is located after"signature" (4 bytes long) |
aoqi@0 | 1548 | (os::seek_to_file_offset(file_descriptor, |
aoqi@0 | 1549 | signature_offset+IMAGE_FILE_SIGNATURE_LENGTH)<0) |
aoqi@0 | 1550 | || |
aoqi@0 | 1551 | //Read field that contains code of architecture |
aoqi@0 | 1552 | // that dll was build for |
aoqi@0 | 1553 | (sizeof(lib_arch)!= |
aoqi@0 | 1554 | (os::read(file_descriptor, (void*)&lib_arch,sizeof(lib_arch)))) |
aoqi@0 | 1555 | ); |
aoqi@0 | 1556 | |
aoqi@0 | 1557 | ::close(file_descriptor); |
aoqi@0 | 1558 | if (failed_to_get_lib_arch) |
aoqi@0 | 1559 | { |
aoqi@0 | 1560 | // file i/o error - report os::lasterror(...) msg |
aoqi@0 | 1561 | return NULL; |
aoqi@0 | 1562 | } |
aoqi@0 | 1563 | |
aoqi@0 | 1564 | typedef struct |
aoqi@0 | 1565 | { |
aoqi@0 | 1566 | uint16_t arch_code; |
aoqi@0 | 1567 | char* arch_name; |
aoqi@0 | 1568 | } arch_t; |
aoqi@0 | 1569 | |
aoqi@0 | 1570 | static const arch_t arch_array[]={ |
aoqi@0 | 1571 | {IMAGE_FILE_MACHINE_I386, (char*)"IA 32"}, |
aoqi@0 | 1572 | {IMAGE_FILE_MACHINE_AMD64, (char*)"AMD 64"}, |
aoqi@0 | 1573 | {IMAGE_FILE_MACHINE_IA64, (char*)"IA 64"} |
aoqi@0 | 1574 | }; |
aoqi@0 | 1575 | #if (defined _M_IA64) |
aoqi@0 | 1576 | static const uint16_t running_arch=IMAGE_FILE_MACHINE_IA64; |
aoqi@0 | 1577 | #elif (defined _M_AMD64) |
aoqi@0 | 1578 | static const uint16_t running_arch=IMAGE_FILE_MACHINE_AMD64; |
aoqi@0 | 1579 | #elif (defined _M_IX86) |
aoqi@0 | 1580 | static const uint16_t running_arch=IMAGE_FILE_MACHINE_I386; |
aoqi@0 | 1581 | #else |
aoqi@0 | 1582 | #error Method os::dll_load requires that one of following \ |
aoqi@0 | 1583 | is defined :_M_IA64,_M_AMD64 or _M_IX86 |
aoqi@0 | 1584 | #endif |
aoqi@0 | 1585 | |
aoqi@0 | 1586 | |
aoqi@0 | 1587 | // Obtain a string for printf operation |
aoqi@0 | 1588 | // lib_arch_str shall contain string what platform this .dll was built for |
aoqi@0 | 1589 | // running_arch_str shall string contain what platform Hotspot was built for |
aoqi@0 | 1590 | char *running_arch_str=NULL,*lib_arch_str=NULL; |
aoqi@0 | 1591 | for (unsigned int i=0;i<ARRAY_SIZE(arch_array);i++) |
aoqi@0 | 1592 | { |
aoqi@0 | 1593 | if (lib_arch==arch_array[i].arch_code) |
aoqi@0 | 1594 | lib_arch_str=arch_array[i].arch_name; |
aoqi@0 | 1595 | if (running_arch==arch_array[i].arch_code) |
aoqi@0 | 1596 | running_arch_str=arch_array[i].arch_name; |
aoqi@0 | 1597 | } |
aoqi@0 | 1598 | |
aoqi@0 | 1599 | assert(running_arch_str, |
aoqi@0 | 1600 | "Didn't find runing architecture code in arch_array"); |
aoqi@0 | 1601 | |
aoqi@0 | 1602 | // If the architure is right |
aoqi@0 | 1603 | // but some other error took place - report os::lasterror(...) msg |
aoqi@0 | 1604 | if (lib_arch == running_arch) |
aoqi@0 | 1605 | { |
aoqi@0 | 1606 | return NULL; |
aoqi@0 | 1607 | } |
aoqi@0 | 1608 | |
aoqi@0 | 1609 | if (lib_arch_str!=NULL) |
aoqi@0 | 1610 | { |
aoqi@0 | 1611 | ::_snprintf(ebuf, ebuflen-1, |
aoqi@0 | 1612 | "Can't load %s-bit .dll on a %s-bit platform", |
aoqi@0 | 1613 | lib_arch_str,running_arch_str); |
aoqi@0 | 1614 | } |
aoqi@0 | 1615 | else |
aoqi@0 | 1616 | { |
aoqi@0 | 1617 | // don't know what architecture this dll was build for |
aoqi@0 | 1618 | ::_snprintf(ebuf, ebuflen-1, |
aoqi@0 | 1619 | "Can't load this .dll (machine code=0x%x) on a %s-bit platform", |
aoqi@0 | 1620 | lib_arch,running_arch_str); |
aoqi@0 | 1621 | } |
aoqi@0 | 1622 | |
aoqi@0 | 1623 | return NULL; |
aoqi@0 | 1624 | } |
aoqi@0 | 1625 | |
aoqi@0 | 1626 | |
aoqi@0 | 1627 | void os::print_dll_info(outputStream *st) { |
aoqi@0 | 1628 | int pid = os::current_process_id(); |
aoqi@0 | 1629 | st->print_cr("Dynamic libraries:"); |
aoqi@0 | 1630 | enumerate_modules(pid, _print_module, (void *)st); |
aoqi@0 | 1631 | } |
aoqi@0 | 1632 | |
aoqi@0 | 1633 | void os::print_os_info_brief(outputStream* st) { |
aoqi@0 | 1634 | os::print_os_info(st); |
aoqi@0 | 1635 | } |
aoqi@0 | 1636 | |
aoqi@0 | 1637 | void os::print_os_info(outputStream* st) { |
aoqi@0 | 1638 | st->print("OS:"); |
aoqi@0 | 1639 | |
aoqi@0 | 1640 | os::win32::print_windows_version(st); |
aoqi@0 | 1641 | } |
aoqi@0 | 1642 | |
aoqi@0 | 1643 | void os::win32::print_windows_version(outputStream* st) { |
aoqi@0 | 1644 | OSVERSIONINFOEX osvi; |
aoqi@0 | 1645 | SYSTEM_INFO si; |
aoqi@0 | 1646 | |
aoqi@0 | 1647 | ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX)); |
aoqi@0 | 1648 | osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); |
aoqi@0 | 1649 | |
aoqi@0 | 1650 | if (!GetVersionEx((OSVERSIONINFO *)&osvi)) { |
aoqi@0 | 1651 | st->print_cr("N/A"); |
aoqi@0 | 1652 | return; |
aoqi@0 | 1653 | } |
aoqi@0 | 1654 | |
aoqi@0 | 1655 | int os_vers = osvi.dwMajorVersion * 1000 + osvi.dwMinorVersion; |
aoqi@0 | 1656 | |
aoqi@0 | 1657 | ZeroMemory(&si, sizeof(SYSTEM_INFO)); |
aoqi@0 | 1658 | if (os_vers >= 5002) { |
aoqi@0 | 1659 | // Retrieve SYSTEM_INFO from GetNativeSystemInfo call so that we could |
aoqi@0 | 1660 | // find out whether we are running on 64 bit processor or not. |
aoqi@0 | 1661 | if (os::Kernel32Dll::GetNativeSystemInfoAvailable()) { |
aoqi@0 | 1662 | os::Kernel32Dll::GetNativeSystemInfo(&si); |
aoqi@0 | 1663 | } else { |
aoqi@0 | 1664 | GetSystemInfo(&si); |
aoqi@0 | 1665 | } |
aoqi@0 | 1666 | } |
aoqi@0 | 1667 | |
aoqi@0 | 1668 | if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) { |
aoqi@0 | 1669 | switch (os_vers) { |
aoqi@0 | 1670 | case 3051: st->print(" Windows NT 3.51"); break; |
aoqi@0 | 1671 | case 4000: st->print(" Windows NT 4.0"); break; |
aoqi@0 | 1672 | case 5000: st->print(" Windows 2000"); break; |
aoqi@0 | 1673 | case 5001: st->print(" Windows XP"); break; |
aoqi@0 | 1674 | case 5002: |
aoqi@0 | 1675 | if (osvi.wProductType == VER_NT_WORKSTATION && |
aoqi@0 | 1676 | si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) { |
aoqi@0 | 1677 | st->print(" Windows XP x64 Edition"); |
aoqi@0 | 1678 | } else { |
aoqi@0 | 1679 | st->print(" Windows Server 2003 family"); |
aoqi@0 | 1680 | } |
aoqi@0 | 1681 | break; |
aoqi@0 | 1682 | |
aoqi@0 | 1683 | case 6000: |
aoqi@0 | 1684 | if (osvi.wProductType == VER_NT_WORKSTATION) { |
aoqi@0 | 1685 | st->print(" Windows Vista"); |
aoqi@0 | 1686 | } else { |
aoqi@0 | 1687 | st->print(" Windows Server 2008"); |
aoqi@0 | 1688 | } |
aoqi@0 | 1689 | break; |
aoqi@0 | 1690 | |
aoqi@0 | 1691 | case 6001: |
aoqi@0 | 1692 | if (osvi.wProductType == VER_NT_WORKSTATION) { |
aoqi@0 | 1693 | st->print(" Windows 7"); |
aoqi@0 | 1694 | } else { |
aoqi@0 | 1695 | st->print(" Windows Server 2008 R2"); |
aoqi@0 | 1696 | } |
aoqi@0 | 1697 | break; |
aoqi@0 | 1698 | |
aoqi@0 | 1699 | case 6002: |
aoqi@0 | 1700 | if (osvi.wProductType == VER_NT_WORKSTATION) { |
aoqi@0 | 1701 | st->print(" Windows 8"); |
aoqi@0 | 1702 | } else { |
aoqi@0 | 1703 | st->print(" Windows Server 2012"); |
aoqi@0 | 1704 | } |
aoqi@0 | 1705 | break; |
aoqi@0 | 1706 | |
aoqi@0 | 1707 | case 6003: |
aoqi@0 | 1708 | if (osvi.wProductType == VER_NT_WORKSTATION) { |
aoqi@0 | 1709 | st->print(" Windows 8.1"); |
aoqi@0 | 1710 | } else { |
aoqi@0 | 1711 | st->print(" Windows Server 2012 R2"); |
aoqi@0 | 1712 | } |
aoqi@0 | 1713 | break; |
aoqi@0 | 1714 | |
aoqi@0 | 1715 | default: // future os |
aoqi@0 | 1716 | // Unrecognized windows, print out its major and minor versions |
aoqi@0 | 1717 | st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
aoqi@0 | 1718 | } |
aoqi@0 | 1719 | } else { |
aoqi@0 | 1720 | switch (os_vers) { |
aoqi@0 | 1721 | case 4000: st->print(" Windows 95"); break; |
aoqi@0 | 1722 | case 4010: st->print(" Windows 98"); break; |
aoqi@0 | 1723 | case 4090: st->print(" Windows Me"); break; |
aoqi@0 | 1724 | default: // future windows, print out its major and minor versions |
aoqi@0 | 1725 | st->print(" Windows %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
aoqi@0 | 1726 | } |
aoqi@0 | 1727 | } |
aoqi@0 | 1728 | |
aoqi@0 | 1729 | if (os_vers >= 6000 && si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) { |
aoqi@0 | 1730 | st->print(" , 64 bit"); |
aoqi@0 | 1731 | } |
aoqi@0 | 1732 | |
aoqi@0 | 1733 | st->print(" Build %d", osvi.dwBuildNumber); |
aoqi@0 | 1734 | st->print(" %s", osvi.szCSDVersion); // service pack |
aoqi@0 | 1735 | st->cr(); |
aoqi@0 | 1736 | } |
aoqi@0 | 1737 | |
aoqi@0 | 1738 | void os::pd_print_cpu_info(outputStream* st) { |
aoqi@0 | 1739 | // Nothing to do for now. |
aoqi@0 | 1740 | } |
aoqi@0 | 1741 | |
aoqi@0 | 1742 | void os::print_memory_info(outputStream* st) { |
aoqi@0 | 1743 | st->print("Memory:"); |
aoqi@0 | 1744 | st->print(" %dk page", os::vm_page_size()>>10); |
aoqi@0 | 1745 | |
aoqi@0 | 1746 | // Use GlobalMemoryStatusEx() because GlobalMemoryStatus() may return incorrect |
aoqi@0 | 1747 | // value if total memory is larger than 4GB |
aoqi@0 | 1748 | MEMORYSTATUSEX ms; |
aoqi@0 | 1749 | ms.dwLength = sizeof(ms); |
aoqi@0 | 1750 | GlobalMemoryStatusEx(&ms); |
aoqi@0 | 1751 | |
aoqi@0 | 1752 | st->print(", physical %uk", os::physical_memory() >> 10); |
aoqi@0 | 1753 | st->print("(%uk free)", os::available_memory() >> 10); |
aoqi@0 | 1754 | |
aoqi@0 | 1755 | st->print(", swap %uk", ms.ullTotalPageFile >> 10); |
aoqi@0 | 1756 | st->print("(%uk free)", ms.ullAvailPageFile >> 10); |
aoqi@0 | 1757 | st->cr(); |
aoqi@0 | 1758 | } |
aoqi@0 | 1759 | |
aoqi@0 | 1760 | void os::print_siginfo(outputStream *st, void *siginfo) { |
aoqi@0 | 1761 | EXCEPTION_RECORD* er = (EXCEPTION_RECORD*)siginfo; |
aoqi@0 | 1762 | st->print("siginfo:"); |
aoqi@0 | 1763 | st->print(" ExceptionCode=0x%x", er->ExceptionCode); |
aoqi@0 | 1764 | |
aoqi@0 | 1765 | if (er->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && |
aoqi@0 | 1766 | er->NumberParameters >= 2) { |
aoqi@0 | 1767 | switch (er->ExceptionInformation[0]) { |
aoqi@0 | 1768 | case 0: st->print(", reading address"); break; |
aoqi@0 | 1769 | case 1: st->print(", writing address"); break; |
aoqi@0 | 1770 | default: st->print(", ExceptionInformation=" INTPTR_FORMAT, |
aoqi@0 | 1771 | er->ExceptionInformation[0]); |
aoqi@0 | 1772 | } |
aoqi@0 | 1773 | st->print(" " INTPTR_FORMAT, er->ExceptionInformation[1]); |
aoqi@0 | 1774 | } else if (er->ExceptionCode == EXCEPTION_IN_PAGE_ERROR && |
aoqi@0 | 1775 | er->NumberParameters >= 2 && UseSharedSpaces) { |
aoqi@0 | 1776 | FileMapInfo* mapinfo = FileMapInfo::current_info(); |
aoqi@0 | 1777 | if (mapinfo->is_in_shared_space((void*)er->ExceptionInformation[1])) { |
aoqi@0 | 1778 | st->print("\n\nError accessing class data sharing archive." \ |
aoqi@0 | 1779 | " Mapped file inaccessible during execution, " \ |
aoqi@0 | 1780 | " possible disk/network problem."); |
aoqi@0 | 1781 | } |
aoqi@0 | 1782 | } else { |
aoqi@0 | 1783 | int num = er->NumberParameters; |
aoqi@0 | 1784 | if (num > 0) { |
aoqi@0 | 1785 | st->print(", ExceptionInformation="); |
aoqi@0 | 1786 | for (int i = 0; i < num; i++) { |
aoqi@0 | 1787 | st->print(INTPTR_FORMAT " ", er->ExceptionInformation[i]); |
aoqi@0 | 1788 | } |
aoqi@0 | 1789 | } |
aoqi@0 | 1790 | } |
aoqi@0 | 1791 | st->cr(); |
aoqi@0 | 1792 | } |
aoqi@0 | 1793 | |
aoqi@0 | 1794 | void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { |
aoqi@0 | 1795 | // do nothing |
aoqi@0 | 1796 | } |
aoqi@0 | 1797 | |
aoqi@0 | 1798 | static char saved_jvm_path[MAX_PATH] = {0}; |
aoqi@0 | 1799 | |
aoqi@0 | 1800 | // Find the full path to the current module, jvm.dll |
aoqi@0 | 1801 | void os::jvm_path(char *buf, jint buflen) { |
aoqi@0 | 1802 | // Error checking. |
aoqi@0 | 1803 | if (buflen < MAX_PATH) { |
aoqi@0 | 1804 | assert(false, "must use a large-enough buffer"); |
aoqi@0 | 1805 | buf[0] = '\0'; |
aoqi@0 | 1806 | return; |
aoqi@0 | 1807 | } |
aoqi@0 | 1808 | // Lazy resolve the path to current module. |
aoqi@0 | 1809 | if (saved_jvm_path[0] != 0) { |
aoqi@0 | 1810 | strcpy(buf, saved_jvm_path); |
aoqi@0 | 1811 | return; |
aoqi@0 | 1812 | } |
aoqi@0 | 1813 | |
aoqi@0 | 1814 | buf[0] = '\0'; |
aoqi@0 | 1815 | if (Arguments::created_by_gamma_launcher()) { |
aoqi@0 | 1816 | // Support for the gamma launcher. Check for an |
aoqi@0 | 1817 | // JAVA_HOME environment variable |
aoqi@0 | 1818 | // and fix up the path so it looks like |
aoqi@0 | 1819 | // libjvm.so is installed there (append a fake suffix |
aoqi@0 | 1820 | // hotspot/libjvm.so). |
aoqi@0 | 1821 | char* java_home_var = ::getenv("JAVA_HOME"); |
aoqi@0 | 1822 | if (java_home_var != NULL && java_home_var[0] != 0 && |
aoqi@0 | 1823 | strlen(java_home_var) < (size_t)buflen) { |
aoqi@0 | 1824 | |
aoqi@0 | 1825 | strncpy(buf, java_home_var, buflen); |
aoqi@0 | 1826 | |
aoqi@0 | 1827 | // determine if this is a legacy image or modules image |
aoqi@0 | 1828 | // modules image doesn't have "jre" subdirectory |
aoqi@0 | 1829 | size_t len = strlen(buf); |
aoqi@0 | 1830 | char* jrebin_p = buf + len; |
aoqi@0 | 1831 | jio_snprintf(jrebin_p, buflen-len, "\\jre\\bin\\"); |
aoqi@0 | 1832 | if (0 != _access(buf, 0)) { |
aoqi@0 | 1833 | jio_snprintf(jrebin_p, buflen-len, "\\bin\\"); |
aoqi@0 | 1834 | } |
aoqi@0 | 1835 | len = strlen(buf); |
aoqi@0 | 1836 | jio_snprintf(buf + len, buflen-len, "hotspot\\jvm.dll"); |
aoqi@0 | 1837 | } |
aoqi@0 | 1838 | } |
aoqi@0 | 1839 | |
aoqi@0 | 1840 | if(buf[0] == '\0') { |
aoqi@0 | 1841 | GetModuleFileName(vm_lib_handle, buf, buflen); |
aoqi@0 | 1842 | } |
aoqi@0 | 1843 | strncpy(saved_jvm_path, buf, MAX_PATH); |
aoqi@0 | 1844 | } |
aoqi@0 | 1845 | |
aoqi@0 | 1846 | |
aoqi@0 | 1847 | void os::print_jni_name_prefix_on(outputStream* st, int args_size) { |
aoqi@0 | 1848 | #ifndef _WIN64 |
aoqi@0 | 1849 | st->print("_"); |
aoqi@0 | 1850 | #endif |
aoqi@0 | 1851 | } |
aoqi@0 | 1852 | |
aoqi@0 | 1853 | |
aoqi@0 | 1854 | void os::print_jni_name_suffix_on(outputStream* st, int args_size) { |
aoqi@0 | 1855 | #ifndef _WIN64 |
aoqi@0 | 1856 | st->print("@%d", args_size * sizeof(int)); |
aoqi@0 | 1857 | #endif |
aoqi@0 | 1858 | } |
aoqi@0 | 1859 | |
aoqi@0 | 1860 | // This method is a copy of JDK's sysGetLastErrorString |
aoqi@0 | 1861 | // from src/windows/hpi/src/system_md.c |
aoqi@0 | 1862 | |
aoqi@0 | 1863 | size_t os::lasterror(char* buf, size_t len) { |
aoqi@0 | 1864 | DWORD errval; |
aoqi@0 | 1865 | |
aoqi@0 | 1866 | if ((errval = GetLastError()) != 0) { |
aoqi@0 | 1867 | // DOS error |
aoqi@0 | 1868 | size_t n = (size_t)FormatMessage( |
aoqi@0 | 1869 | FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, |
aoqi@0 | 1870 | NULL, |
aoqi@0 | 1871 | errval, |
aoqi@0 | 1872 | 0, |
aoqi@0 | 1873 | buf, |
aoqi@0 | 1874 | (DWORD)len, |
aoqi@0 | 1875 | NULL); |
aoqi@0 | 1876 | if (n > 3) { |
aoqi@0 | 1877 | // Drop final '.', CR, LF |
aoqi@0 | 1878 | if (buf[n - 1] == '\n') n--; |
aoqi@0 | 1879 | if (buf[n - 1] == '\r') n--; |
aoqi@0 | 1880 | if (buf[n - 1] == '.') n--; |
aoqi@0 | 1881 | buf[n] = '\0'; |
aoqi@0 | 1882 | } |
aoqi@0 | 1883 | return n; |
aoqi@0 | 1884 | } |
aoqi@0 | 1885 | |
aoqi@0 | 1886 | if (errno != 0) { |
aoqi@0 | 1887 | // C runtime error that has no corresponding DOS error code |
aoqi@0 | 1888 | const char* s = strerror(errno); |
aoqi@0 | 1889 | size_t n = strlen(s); |
aoqi@0 | 1890 | if (n >= len) n = len - 1; |
aoqi@0 | 1891 | strncpy(buf, s, n); |
aoqi@0 | 1892 | buf[n] = '\0'; |
aoqi@0 | 1893 | return n; |
aoqi@0 | 1894 | } |
aoqi@0 | 1895 | |
aoqi@0 | 1896 | return 0; |
aoqi@0 | 1897 | } |
aoqi@0 | 1898 | |
aoqi@0 | 1899 | int os::get_last_error() { |
aoqi@0 | 1900 | DWORD error = GetLastError(); |
aoqi@0 | 1901 | if (error == 0) |
aoqi@0 | 1902 | error = errno; |
aoqi@0 | 1903 | return (int)error; |
aoqi@0 | 1904 | } |
aoqi@0 | 1905 | |
aoqi@0 | 1906 | // sun.misc.Signal |
aoqi@0 | 1907 | // NOTE that this is a workaround for an apparent kernel bug where if |
aoqi@0 | 1908 | // a signal handler for SIGBREAK is installed then that signal handler |
aoqi@0 | 1909 | // takes priority over the console control handler for CTRL_CLOSE_EVENT. |
aoqi@0 | 1910 | // See bug 4416763. |
aoqi@0 | 1911 | static void (*sigbreakHandler)(int) = NULL; |
aoqi@0 | 1912 | |
aoqi@0 | 1913 | static void UserHandler(int sig, void *siginfo, void *context) { |
aoqi@0 | 1914 | os::signal_notify(sig); |
aoqi@0 | 1915 | // We need to reinstate the signal handler each time... |
aoqi@0 | 1916 | os::signal(sig, (void*)UserHandler); |
aoqi@0 | 1917 | } |
aoqi@0 | 1918 | |
aoqi@0 | 1919 | void* os::user_handler() { |
aoqi@0 | 1920 | return (void*) UserHandler; |
aoqi@0 | 1921 | } |
aoqi@0 | 1922 | |
aoqi@0 | 1923 | void* os::signal(int signal_number, void* handler) { |
aoqi@0 | 1924 | if ((signal_number == SIGBREAK) && (!ReduceSignalUsage)) { |
aoqi@0 | 1925 | void (*oldHandler)(int) = sigbreakHandler; |
aoqi@0 | 1926 | sigbreakHandler = (void (*)(int)) handler; |
aoqi@0 | 1927 | return (void*) oldHandler; |
aoqi@0 | 1928 | } else { |
aoqi@0 | 1929 | return (void*)::signal(signal_number, (void (*)(int))handler); |
aoqi@0 | 1930 | } |
aoqi@0 | 1931 | } |
aoqi@0 | 1932 | |
aoqi@0 | 1933 | void os::signal_raise(int signal_number) { |
aoqi@0 | 1934 | raise(signal_number); |
aoqi@0 | 1935 | } |
aoqi@0 | 1936 | |
aoqi@0 | 1937 | // The Win32 C runtime library maps all console control events other than ^C |
aoqi@0 | 1938 | // into SIGBREAK, which makes it impossible to distinguish ^BREAK from close, |
aoqi@0 | 1939 | // logoff, and shutdown events. We therefore install our own console handler |
aoqi@0 | 1940 | // that raises SIGTERM for the latter cases. |
aoqi@0 | 1941 | // |
aoqi@0 | 1942 | static BOOL WINAPI consoleHandler(DWORD event) { |
aoqi@0 | 1943 | switch(event) { |
aoqi@0 | 1944 | case CTRL_C_EVENT: |
aoqi@0 | 1945 | if (is_error_reported()) { |
aoqi@0 | 1946 | // Ctrl-C is pressed during error reporting, likely because the error |
aoqi@0 | 1947 | // handler fails to abort. Let VM die immediately. |
aoqi@0 | 1948 | os::die(); |
aoqi@0 | 1949 | } |
aoqi@0 | 1950 | |
aoqi@0 | 1951 | os::signal_raise(SIGINT); |
aoqi@0 | 1952 | return TRUE; |
aoqi@0 | 1953 | break; |
aoqi@0 | 1954 | case CTRL_BREAK_EVENT: |
aoqi@0 | 1955 | if (sigbreakHandler != NULL) { |
aoqi@0 | 1956 | (*sigbreakHandler)(SIGBREAK); |
aoqi@0 | 1957 | } |
aoqi@0 | 1958 | return TRUE; |
aoqi@0 | 1959 | break; |
aoqi@0 | 1960 | case CTRL_LOGOFF_EVENT: { |
aoqi@0 | 1961 | // Don't terminate JVM if it is running in a non-interactive session, |
aoqi@0 | 1962 | // such as a service process. |
aoqi@0 | 1963 | USEROBJECTFLAGS flags; |
aoqi@0 | 1964 | HANDLE handle = GetProcessWindowStation(); |
aoqi@0 | 1965 | if (handle != NULL && |
aoqi@0 | 1966 | GetUserObjectInformation(handle, UOI_FLAGS, &flags, |
aoqi@0 | 1967 | sizeof( USEROBJECTFLAGS), NULL)) { |
aoqi@0 | 1968 | // If it is a non-interactive session, let next handler to deal |
aoqi@0 | 1969 | // with it. |
aoqi@0 | 1970 | if ((flags.dwFlags & WSF_VISIBLE) == 0) { |
aoqi@0 | 1971 | return FALSE; |
aoqi@0 | 1972 | } |
aoqi@0 | 1973 | } |
aoqi@0 | 1974 | } |
aoqi@0 | 1975 | case CTRL_CLOSE_EVENT: |
aoqi@0 | 1976 | case CTRL_SHUTDOWN_EVENT: |
aoqi@0 | 1977 | os::signal_raise(SIGTERM); |
aoqi@0 | 1978 | return TRUE; |
aoqi@0 | 1979 | break; |
aoqi@0 | 1980 | default: |
aoqi@0 | 1981 | break; |
aoqi@0 | 1982 | } |
aoqi@0 | 1983 | return FALSE; |
aoqi@0 | 1984 | } |
aoqi@0 | 1985 | |
aoqi@0 | 1986 | /* |
aoqi@0 | 1987 | * The following code is moved from os.cpp for making this |
aoqi@0 | 1988 | * code platform specific, which it is by its very nature. |
aoqi@0 | 1989 | */ |
aoqi@0 | 1990 | |
aoqi@0 | 1991 | // Return maximum OS signal used + 1 for internal use only |
aoqi@0 | 1992 | // Used as exit signal for signal_thread |
aoqi@0 | 1993 | int os::sigexitnum_pd(){ |
aoqi@0 | 1994 | return NSIG; |
aoqi@0 | 1995 | } |
aoqi@0 | 1996 | |
aoqi@0 | 1997 | // a counter for each possible signal value, including signal_thread exit signal |
aoqi@0 | 1998 | static volatile jint pending_signals[NSIG+1] = { 0 }; |
aoqi@0 | 1999 | static HANDLE sig_sem = NULL; |
aoqi@0 | 2000 | |
aoqi@0 | 2001 | void os::signal_init_pd() { |
aoqi@0 | 2002 | // Initialize signal structures |
aoqi@0 | 2003 | memset((void*)pending_signals, 0, sizeof(pending_signals)); |
aoqi@0 | 2004 | |
aoqi@0 | 2005 | sig_sem = ::CreateSemaphore(NULL, 0, NSIG+1, NULL); |
aoqi@0 | 2006 | |
aoqi@0 | 2007 | // Programs embedding the VM do not want it to attempt to receive |
aoqi@0 | 2008 | // events like CTRL_LOGOFF_EVENT, which are used to implement the |
aoqi@0 | 2009 | // shutdown hooks mechanism introduced in 1.3. For example, when |
aoqi@0 | 2010 | // the VM is run as part of a Windows NT service (i.e., a servlet |
aoqi@0 | 2011 | // engine in a web server), the correct behavior is for any console |
aoqi@0 | 2012 | // control handler to return FALSE, not TRUE, because the OS's |
aoqi@0 | 2013 | // "final" handler for such events allows the process to continue if |
aoqi@0 | 2014 | // it is a service (while terminating it if it is not a service). |
aoqi@0 | 2015 | // To make this behavior uniform and the mechanism simpler, we |
aoqi@0 | 2016 | // completely disable the VM's usage of these console events if -Xrs |
aoqi@0 | 2017 | // (=ReduceSignalUsage) is specified. This means, for example, that |
aoqi@0 | 2018 | // the CTRL-BREAK thread dump mechanism is also disabled in this |
aoqi@0 | 2019 | // case. See bugs 4323062, 4345157, and related bugs. |
aoqi@0 | 2020 | |
aoqi@0 | 2021 | if (!ReduceSignalUsage) { |
aoqi@0 | 2022 | // Add a CTRL-C handler |
aoqi@0 | 2023 | SetConsoleCtrlHandler(consoleHandler, TRUE); |
aoqi@0 | 2024 | } |
aoqi@0 | 2025 | } |
aoqi@0 | 2026 | |
aoqi@0 | 2027 | void os::signal_notify(int signal_number) { |
aoqi@0 | 2028 | BOOL ret; |
aoqi@0 | 2029 | if (sig_sem != NULL) { |
aoqi@0 | 2030 | Atomic::inc(&pending_signals[signal_number]); |
aoqi@0 | 2031 | ret = ::ReleaseSemaphore(sig_sem, 1, NULL); |
aoqi@0 | 2032 | assert(ret != 0, "ReleaseSemaphore() failed"); |
aoqi@0 | 2033 | } |
aoqi@0 | 2034 | } |
aoqi@0 | 2035 | |
aoqi@0 | 2036 | static int check_pending_signals(bool wait_for_signal) { |
aoqi@0 | 2037 | DWORD ret; |
aoqi@0 | 2038 | while (true) { |
aoqi@0 | 2039 | for (int i = 0; i < NSIG + 1; i++) { |
aoqi@0 | 2040 | jint n = pending_signals[i]; |
aoqi@0 | 2041 | if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { |
aoqi@0 | 2042 | return i; |
aoqi@0 | 2043 | } |
aoqi@0 | 2044 | } |
aoqi@0 | 2045 | if (!wait_for_signal) { |
aoqi@0 | 2046 | return -1; |
aoqi@0 | 2047 | } |
aoqi@0 | 2048 | |
aoqi@0 | 2049 | JavaThread *thread = JavaThread::current(); |
aoqi@0 | 2050 | |
aoqi@0 | 2051 | ThreadBlockInVM tbivm(thread); |
aoqi@0 | 2052 | |
aoqi@0 | 2053 | bool threadIsSuspended; |
aoqi@0 | 2054 | do { |
aoqi@0 | 2055 | thread->set_suspend_equivalent(); |
aoqi@0 | 2056 | // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() |
aoqi@0 | 2057 | ret = ::WaitForSingleObject(sig_sem, INFINITE); |
aoqi@0 | 2058 | assert(ret == WAIT_OBJECT_0, "WaitForSingleObject() failed"); |
aoqi@0 | 2059 | |
aoqi@0 | 2060 | // were we externally suspended while we were waiting? |
aoqi@0 | 2061 | threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); |
aoqi@0 | 2062 | if (threadIsSuspended) { |
aoqi@0 | 2063 | // |
aoqi@0 | 2064 | // The semaphore has been incremented, but while we were waiting |
aoqi@0 | 2065 | // another thread suspended us. We don't want to continue running |
aoqi@0 | 2066 | // while suspended because that would surprise the thread that |
aoqi@0 | 2067 | // suspended us. |
aoqi@0 | 2068 | // |
aoqi@0 | 2069 | ret = ::ReleaseSemaphore(sig_sem, 1, NULL); |
aoqi@0 | 2070 | assert(ret != 0, "ReleaseSemaphore() failed"); |
aoqi@0 | 2071 | |
aoqi@0 | 2072 | thread->java_suspend_self(); |
aoqi@0 | 2073 | } |
aoqi@0 | 2074 | } while (threadIsSuspended); |
aoqi@0 | 2075 | } |
aoqi@0 | 2076 | } |
aoqi@0 | 2077 | |
aoqi@0 | 2078 | int os::signal_lookup() { |
aoqi@0 | 2079 | return check_pending_signals(false); |
aoqi@0 | 2080 | } |
aoqi@0 | 2081 | |
aoqi@0 | 2082 | int os::signal_wait() { |
aoqi@0 | 2083 | return check_pending_signals(true); |
aoqi@0 | 2084 | } |
aoqi@0 | 2085 | |
aoqi@0 | 2086 | // Implicit OS exception handling |
aoqi@0 | 2087 | |
aoqi@0 | 2088 | LONG Handle_Exception(struct _EXCEPTION_POINTERS* exceptionInfo, address handler) { |
aoqi@0 | 2089 | JavaThread* thread = JavaThread::current(); |
aoqi@0 | 2090 | // Save pc in thread |
aoqi@0 | 2091 | #ifdef _M_IA64 |
aoqi@0 | 2092 | // Do not blow up if no thread info available. |
aoqi@0 | 2093 | if (thread) { |
aoqi@0 | 2094 | // Saving PRECISE pc (with slot information) in thread. |
aoqi@0 | 2095 | uint64_t precise_pc = (uint64_t) exceptionInfo->ExceptionRecord->ExceptionAddress; |
aoqi@0 | 2096 | // Convert precise PC into "Unix" format |
aoqi@0 | 2097 | precise_pc = (precise_pc & 0xFFFFFFFFFFFFFFF0) | ((precise_pc & 0xF) >> 2); |
aoqi@0 | 2098 | thread->set_saved_exception_pc((address)precise_pc); |
aoqi@0 | 2099 | } |
aoqi@0 | 2100 | // Set pc to handler |
aoqi@0 | 2101 | exceptionInfo->ContextRecord->StIIP = (DWORD64)handler; |
aoqi@0 | 2102 | // Clear out psr.ri (= Restart Instruction) in order to continue |
aoqi@0 | 2103 | // at the beginning of the target bundle. |
aoqi@0 | 2104 | exceptionInfo->ContextRecord->StIPSR &= 0xFFFFF9FFFFFFFFFF; |
aoqi@0 | 2105 | assert(((DWORD64)handler & 0xF) == 0, "Target address must point to the beginning of a bundle!"); |
aoqi@0 | 2106 | #elif _M_AMD64 |
aoqi@0 | 2107 | // Do not blow up if no thread info available. |
aoqi@0 | 2108 | if (thread) { |
aoqi@0 | 2109 | thread->set_saved_exception_pc((address)(DWORD_PTR)exceptionInfo->ContextRecord->Rip); |
aoqi@0 | 2110 | } |
aoqi@0 | 2111 | // Set pc to handler |
aoqi@0 | 2112 | exceptionInfo->ContextRecord->Rip = (DWORD64)handler; |
aoqi@0 | 2113 | #else |
aoqi@0 | 2114 | // Do not blow up if no thread info available. |
aoqi@0 | 2115 | if (thread) { |
aoqi@0 | 2116 | thread->set_saved_exception_pc((address)(DWORD_PTR)exceptionInfo->ContextRecord->Eip); |
aoqi@0 | 2117 | } |
aoqi@0 | 2118 | // Set pc to handler |
aoqi@0 | 2119 | exceptionInfo->ContextRecord->Eip = (DWORD)(DWORD_PTR)handler; |
aoqi@0 | 2120 | #endif |
aoqi@0 | 2121 | |
aoqi@0 | 2122 | // Continue the execution |
aoqi@0 | 2123 | return EXCEPTION_CONTINUE_EXECUTION; |
aoqi@0 | 2124 | } |
aoqi@0 | 2125 | |
aoqi@0 | 2126 | |
aoqi@0 | 2127 | // Used for PostMortemDump |
aoqi@0 | 2128 | extern "C" void safepoints(); |
aoqi@0 | 2129 | extern "C" void find(int x); |
aoqi@0 | 2130 | extern "C" void events(); |
aoqi@0 | 2131 | |
aoqi@0 | 2132 | // According to Windows API documentation, an illegal instruction sequence should generate |
aoqi@0 | 2133 | // the 0xC000001C exception code. However, real world experience shows that occasionnaly |
aoqi@0 | 2134 | // the execution of an illegal instruction can generate the exception code 0xC000001E. This |
aoqi@0 | 2135 | // seems to be an undocumented feature of Win NT 4.0 (and probably other Windows systems). |
aoqi@0 | 2136 | |
aoqi@0 | 2137 | #define EXCEPTION_ILLEGAL_INSTRUCTION_2 0xC000001E |
aoqi@0 | 2138 | |
aoqi@0 | 2139 | // From "Execution Protection in the Windows Operating System" draft 0.35 |
aoqi@0 | 2140 | // Once a system header becomes available, the "real" define should be |
aoqi@0 | 2141 | // included or copied here. |
aoqi@0 | 2142 | #define EXCEPTION_INFO_EXEC_VIOLATION 0x08 |
aoqi@0 | 2143 | |
aoqi@0 | 2144 | // Handle NAT Bit consumption on IA64. |
aoqi@0 | 2145 | #ifdef _M_IA64 |
aoqi@0 | 2146 | #define EXCEPTION_REG_NAT_CONSUMPTION STATUS_REG_NAT_CONSUMPTION |
aoqi@0 | 2147 | #endif |
aoqi@0 | 2148 | |
aoqi@0 | 2149 | // Windows Vista/2008 heap corruption check |
aoqi@0 | 2150 | #define EXCEPTION_HEAP_CORRUPTION 0xC0000374 |
aoqi@0 | 2151 | |
aoqi@0 | 2152 | #define def_excpt(val) #val, val |
aoqi@0 | 2153 | |
aoqi@0 | 2154 | struct siglabel { |
aoqi@0 | 2155 | char *name; |
aoqi@0 | 2156 | int number; |
aoqi@0 | 2157 | }; |
aoqi@0 | 2158 | |
aoqi@0 | 2159 | // All Visual C++ exceptions thrown from code generated by the Microsoft Visual |
aoqi@0 | 2160 | // C++ compiler contain this error code. Because this is a compiler-generated |
aoqi@0 | 2161 | // error, the code is not listed in the Win32 API header files. |
aoqi@0 | 2162 | // The code is actually a cryptic mnemonic device, with the initial "E" |
aoqi@0 | 2163 | // standing for "exception" and the final 3 bytes (0x6D7363) representing the |
aoqi@0 | 2164 | // ASCII values of "msc". |
aoqi@0 | 2165 | |
aoqi@0 | 2166 | #define EXCEPTION_UNCAUGHT_CXX_EXCEPTION 0xE06D7363 |
aoqi@0 | 2167 | |
aoqi@0 | 2168 | |
aoqi@0 | 2169 | struct siglabel exceptlabels[] = { |
aoqi@0 | 2170 | def_excpt(EXCEPTION_ACCESS_VIOLATION), |
aoqi@0 | 2171 | def_excpt(EXCEPTION_DATATYPE_MISALIGNMENT), |
aoqi@0 | 2172 | def_excpt(EXCEPTION_BREAKPOINT), |
aoqi@0 | 2173 | def_excpt(EXCEPTION_SINGLE_STEP), |
aoqi@0 | 2174 | def_excpt(EXCEPTION_ARRAY_BOUNDS_EXCEEDED), |
aoqi@0 | 2175 | def_excpt(EXCEPTION_FLT_DENORMAL_OPERAND), |
aoqi@0 | 2176 | def_excpt(EXCEPTION_FLT_DIVIDE_BY_ZERO), |
aoqi@0 | 2177 | def_excpt(EXCEPTION_FLT_INEXACT_RESULT), |
aoqi@0 | 2178 | def_excpt(EXCEPTION_FLT_INVALID_OPERATION), |
aoqi@0 | 2179 | def_excpt(EXCEPTION_FLT_OVERFLOW), |
aoqi@0 | 2180 | def_excpt(EXCEPTION_FLT_STACK_CHECK), |
aoqi@0 | 2181 | def_excpt(EXCEPTION_FLT_UNDERFLOW), |
aoqi@0 | 2182 | def_excpt(EXCEPTION_INT_DIVIDE_BY_ZERO), |
aoqi@0 | 2183 | def_excpt(EXCEPTION_INT_OVERFLOW), |
aoqi@0 | 2184 | def_excpt(EXCEPTION_PRIV_INSTRUCTION), |
aoqi@0 | 2185 | def_excpt(EXCEPTION_IN_PAGE_ERROR), |
aoqi@0 | 2186 | def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION), |
aoqi@0 | 2187 | def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION_2), |
aoqi@0 | 2188 | def_excpt(EXCEPTION_NONCONTINUABLE_EXCEPTION), |
aoqi@0 | 2189 | def_excpt(EXCEPTION_STACK_OVERFLOW), |
aoqi@0 | 2190 | def_excpt(EXCEPTION_INVALID_DISPOSITION), |
aoqi@0 | 2191 | def_excpt(EXCEPTION_GUARD_PAGE), |
aoqi@0 | 2192 | def_excpt(EXCEPTION_INVALID_HANDLE), |
aoqi@0 | 2193 | def_excpt(EXCEPTION_UNCAUGHT_CXX_EXCEPTION), |
aoqi@0 | 2194 | def_excpt(EXCEPTION_HEAP_CORRUPTION), |
aoqi@0 | 2195 | #ifdef _M_IA64 |
aoqi@0 | 2196 | def_excpt(EXCEPTION_REG_NAT_CONSUMPTION), |
aoqi@0 | 2197 | #endif |
aoqi@0 | 2198 | NULL, 0 |
aoqi@0 | 2199 | }; |
aoqi@0 | 2200 | |
aoqi@0 | 2201 | const char* os::exception_name(int exception_code, char *buf, size_t size) { |
aoqi@0 | 2202 | for (int i = 0; exceptlabels[i].name != NULL; i++) { |
aoqi@0 | 2203 | if (exceptlabels[i].number == exception_code) { |
aoqi@0 | 2204 | jio_snprintf(buf, size, "%s", exceptlabels[i].name); |
aoqi@0 | 2205 | return buf; |
aoqi@0 | 2206 | } |
aoqi@0 | 2207 | } |
aoqi@0 | 2208 | |
aoqi@0 | 2209 | return NULL; |
aoqi@0 | 2210 | } |
aoqi@0 | 2211 | |
aoqi@0 | 2212 | //----------------------------------------------------------------------------- |
aoqi@0 | 2213 | LONG Handle_IDiv_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) { |
aoqi@0 | 2214 | // handle exception caused by idiv; should only happen for -MinInt/-1 |
aoqi@0 | 2215 | // (division by zero is handled explicitly) |
aoqi@0 | 2216 | #ifdef _M_IA64 |
aoqi@0 | 2217 | assert(0, "Fix Handle_IDiv_Exception"); |
aoqi@0 | 2218 | #elif _M_AMD64 |
aoqi@0 | 2219 | PCONTEXT ctx = exceptionInfo->ContextRecord; |
aoqi@0 | 2220 | address pc = (address)ctx->Rip; |
aoqi@0 | 2221 | assert(pc[0] == 0xF7, "not an idiv opcode"); |
aoqi@0 | 2222 | assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands"); |
aoqi@0 | 2223 | assert(ctx->Rax == min_jint, "unexpected idiv exception"); |
aoqi@0 | 2224 | // set correct result values and continue after idiv instruction |
aoqi@0 | 2225 | ctx->Rip = (DWORD)pc + 2; // idiv reg, reg is 2 bytes |
aoqi@0 | 2226 | ctx->Rax = (DWORD)min_jint; // result |
aoqi@0 | 2227 | ctx->Rdx = (DWORD)0; // remainder |
aoqi@0 | 2228 | // Continue the execution |
aoqi@0 | 2229 | #else |
aoqi@0 | 2230 | PCONTEXT ctx = exceptionInfo->ContextRecord; |
aoqi@0 | 2231 | address pc = (address)ctx->Eip; |
aoqi@0 | 2232 | assert(pc[0] == 0xF7, "not an idiv opcode"); |
aoqi@0 | 2233 | assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands"); |
aoqi@0 | 2234 | assert(ctx->Eax == min_jint, "unexpected idiv exception"); |
aoqi@0 | 2235 | // set correct result values and continue after idiv instruction |
aoqi@0 | 2236 | ctx->Eip = (DWORD)pc + 2; // idiv reg, reg is 2 bytes |
aoqi@0 | 2237 | ctx->Eax = (DWORD)min_jint; // result |
aoqi@0 | 2238 | ctx->Edx = (DWORD)0; // remainder |
aoqi@0 | 2239 | // Continue the execution |
aoqi@0 | 2240 | #endif |
aoqi@0 | 2241 | return EXCEPTION_CONTINUE_EXECUTION; |
aoqi@0 | 2242 | } |
aoqi@0 | 2243 | |
aoqi@0 | 2244 | #ifndef _WIN64 |
aoqi@0 | 2245 | //----------------------------------------------------------------------------- |
aoqi@0 | 2246 | LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) { |
aoqi@0 | 2247 | // handle exception caused by native method modifying control word |
aoqi@0 | 2248 | PCONTEXT ctx = exceptionInfo->ContextRecord; |
aoqi@0 | 2249 | DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; |
aoqi@0 | 2250 | |
aoqi@0 | 2251 | switch (exception_code) { |
aoqi@0 | 2252 | case EXCEPTION_FLT_DENORMAL_OPERAND: |
aoqi@0 | 2253 | case EXCEPTION_FLT_DIVIDE_BY_ZERO: |
aoqi@0 | 2254 | case EXCEPTION_FLT_INEXACT_RESULT: |
aoqi@0 | 2255 | case EXCEPTION_FLT_INVALID_OPERATION: |
aoqi@0 | 2256 | case EXCEPTION_FLT_OVERFLOW: |
aoqi@0 | 2257 | case EXCEPTION_FLT_STACK_CHECK: |
aoqi@0 | 2258 | case EXCEPTION_FLT_UNDERFLOW: |
aoqi@0 | 2259 | jint fp_control_word = (* (jint*) StubRoutines::addr_fpu_cntrl_wrd_std()); |
aoqi@0 | 2260 | if (fp_control_word != ctx->FloatSave.ControlWord) { |
aoqi@0 | 2261 | // Restore FPCW and mask out FLT exceptions |
aoqi@0 | 2262 | ctx->FloatSave.ControlWord = fp_control_word | 0xffffffc0; |
aoqi@0 | 2263 | // Mask out pending FLT exceptions |
aoqi@0 | 2264 | ctx->FloatSave.StatusWord &= 0xffffff00; |
aoqi@0 | 2265 | return EXCEPTION_CONTINUE_EXECUTION; |
aoqi@0 | 2266 | } |
aoqi@0 | 2267 | } |
aoqi@0 | 2268 | |
aoqi@0 | 2269 | if (prev_uef_handler != NULL) { |
aoqi@0 | 2270 | // We didn't handle this exception so pass it to the previous |
aoqi@0 | 2271 | // UnhandledExceptionFilter. |
aoqi@0 | 2272 | return (prev_uef_handler)(exceptionInfo); |
aoqi@0 | 2273 | } |
aoqi@0 | 2274 | |
aoqi@0 | 2275 | return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 2276 | } |
aoqi@0 | 2277 | #else //_WIN64 |
aoqi@0 | 2278 | /* |
aoqi@0 | 2279 | On Windows, the mxcsr control bits are non-volatile across calls |
aoqi@0 | 2280 | See also CR 6192333 |
aoqi@0 | 2281 | If EXCEPTION_FLT_* happened after some native method modified |
aoqi@0 | 2282 | mxcsr - it is not a jvm fault. |
aoqi@0 | 2283 | However should we decide to restore of mxcsr after a faulty |
aoqi@0 | 2284 | native method we can uncomment following code |
aoqi@0 | 2285 | jint MxCsr = INITIAL_MXCSR; |
aoqi@0 | 2286 | // we can't use StubRoutines::addr_mxcsr_std() |
aoqi@0 | 2287 | // because in Win64 mxcsr is not saved there |
aoqi@0 | 2288 | if (MxCsr != ctx->MxCsr) { |
aoqi@0 | 2289 | ctx->MxCsr = MxCsr; |
aoqi@0 | 2290 | return EXCEPTION_CONTINUE_EXECUTION; |
aoqi@0 | 2291 | } |
aoqi@0 | 2292 | |
aoqi@0 | 2293 | */ |
aoqi@0 | 2294 | #endif // _WIN64 |
aoqi@0 | 2295 | |
aoqi@0 | 2296 | |
aoqi@0 | 2297 | static inline void report_error(Thread* t, DWORD exception_code, |
aoqi@0 | 2298 | address addr, void* siginfo, void* context) { |
aoqi@0 | 2299 | VMError err(t, exception_code, addr, siginfo, context); |
aoqi@0 | 2300 | err.report_and_die(); |
aoqi@0 | 2301 | |
aoqi@0 | 2302 | // If UseOsErrorReporting, this will return here and save the error file |
aoqi@0 | 2303 | // somewhere where we can find it in the minidump. |
aoqi@0 | 2304 | } |
aoqi@0 | 2305 | |
aoqi@0 | 2306 | //----------------------------------------------------------------------------- |
aoqi@0 | 2307 | LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) { |
aoqi@0 | 2308 | if (InterceptOSException) return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 2309 | DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; |
aoqi@0 | 2310 | #ifdef _M_IA64 |
aoqi@0 | 2311 | // On Itanium, we need the "precise pc", which has the slot number coded |
aoqi@0 | 2312 | // into the least 4 bits: 0000=slot0, 0100=slot1, 1000=slot2 (Windows format). |
aoqi@0 | 2313 | address pc = (address) exceptionInfo->ExceptionRecord->ExceptionAddress; |
aoqi@0 | 2314 | // Convert the pc to "Unix format", which has the slot number coded |
aoqi@0 | 2315 | // into the least 2 bits: 0000=slot0, 0001=slot1, 0010=slot2 |
aoqi@0 | 2316 | // This is needed for IA64 because "relocation" / "implicit null check" / "poll instruction" |
aoqi@0 | 2317 | // information is saved in the Unix format. |
aoqi@0 | 2318 | address pc_unix_format = (address) ((((uint64_t)pc) & 0xFFFFFFFFFFFFFFF0) | ((((uint64_t)pc) & 0xF) >> 2)); |
aoqi@0 | 2319 | #elif _M_AMD64 |
aoqi@0 | 2320 | address pc = (address) exceptionInfo->ContextRecord->Rip; |
aoqi@0 | 2321 | #else |
aoqi@0 | 2322 | address pc = (address) exceptionInfo->ContextRecord->Eip; |
aoqi@0 | 2323 | #endif |
aoqi@0 | 2324 | Thread* t = ThreadLocalStorage::get_thread_slow(); // slow & steady |
aoqi@0 | 2325 | |
aoqi@0 | 2326 | // Handle SafeFetch32 and SafeFetchN exceptions. |
aoqi@0 | 2327 | if (StubRoutines::is_safefetch_fault(pc)) { |
aoqi@0 | 2328 | return Handle_Exception(exceptionInfo, StubRoutines::continuation_for_safefetch_fault(pc)); |
aoqi@0 | 2329 | } |
aoqi@0 | 2330 | |
aoqi@0 | 2331 | #ifndef _WIN64 |
aoqi@0 | 2332 | // Execution protection violation - win32 running on AMD64 only |
aoqi@0 | 2333 | // Handled first to avoid misdiagnosis as a "normal" access violation; |
aoqi@0 | 2334 | // This is safe to do because we have a new/unique ExceptionInformation |
aoqi@0 | 2335 | // code for this condition. |
aoqi@0 | 2336 | if (exception_code == EXCEPTION_ACCESS_VIOLATION) { |
aoqi@0 | 2337 | PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; |
aoqi@0 | 2338 | int exception_subcode = (int) exceptionRecord->ExceptionInformation[0]; |
aoqi@0 | 2339 | address addr = (address) exceptionRecord->ExceptionInformation[1]; |
aoqi@0 | 2340 | |
aoqi@0 | 2341 | if (exception_subcode == EXCEPTION_INFO_EXEC_VIOLATION) { |
aoqi@0 | 2342 | int page_size = os::vm_page_size(); |
aoqi@0 | 2343 | |
aoqi@0 | 2344 | // Make sure the pc and the faulting address are sane. |
aoqi@0 | 2345 | // |
aoqi@0 | 2346 | // If an instruction spans a page boundary, and the page containing |
aoqi@0 | 2347 | // the beginning of the instruction is executable but the following |
aoqi@0 | 2348 | // page is not, the pc and the faulting address might be slightly |
aoqi@0 | 2349 | // different - we still want to unguard the 2nd page in this case. |
aoqi@0 | 2350 | // |
aoqi@0 | 2351 | // 15 bytes seems to be a (very) safe value for max instruction size. |
aoqi@0 | 2352 | bool pc_is_near_addr = |
aoqi@0 | 2353 | (pointer_delta((void*) addr, (void*) pc, sizeof(char)) < 15); |
aoqi@0 | 2354 | bool instr_spans_page_boundary = |
aoqi@0 | 2355 | (align_size_down((intptr_t) pc ^ (intptr_t) addr, |
aoqi@0 | 2356 | (intptr_t) page_size) > 0); |
aoqi@0 | 2357 | |
aoqi@0 | 2358 | if (pc == addr || (pc_is_near_addr && instr_spans_page_boundary)) { |
aoqi@0 | 2359 | static volatile address last_addr = |
aoqi@0 | 2360 | (address) os::non_memory_address_word(); |
aoqi@0 | 2361 | |
aoqi@0 | 2362 | // In conservative mode, don't unguard unless the address is in the VM |
aoqi@0 | 2363 | if (UnguardOnExecutionViolation > 0 && addr != last_addr && |
aoqi@0 | 2364 | (UnguardOnExecutionViolation > 1 || os::address_is_in_vm(addr))) { |
aoqi@0 | 2365 | |
aoqi@0 | 2366 | // Set memory to RWX and retry |
aoqi@0 | 2367 | address page_start = |
aoqi@0 | 2368 | (address) align_size_down((intptr_t) addr, (intptr_t) page_size); |
aoqi@0 | 2369 | bool res = os::protect_memory((char*) page_start, page_size, |
aoqi@0 | 2370 | os::MEM_PROT_RWX); |
aoqi@0 | 2371 | |
aoqi@0 | 2372 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 2373 | char buf[256]; |
aoqi@0 | 2374 | jio_snprintf(buf, sizeof(buf), "Execution protection violation " |
aoqi@0 | 2375 | "at " INTPTR_FORMAT |
aoqi@0 | 2376 | ", unguarding " INTPTR_FORMAT ": %s", addr, |
aoqi@0 | 2377 | page_start, (res ? "success" : strerror(errno))); |
aoqi@0 | 2378 | tty->print_raw_cr(buf); |
aoqi@0 | 2379 | } |
aoqi@0 | 2380 | |
aoqi@0 | 2381 | // Set last_addr so if we fault again at the same address, we don't |
aoqi@0 | 2382 | // end up in an endless loop. |
aoqi@0 | 2383 | // |
aoqi@0 | 2384 | // There are two potential complications here. Two threads trapping |
aoqi@0 | 2385 | // at the same address at the same time could cause one of the |
aoqi@0 | 2386 | // threads to think it already unguarded, and abort the VM. Likely |
aoqi@0 | 2387 | // very rare. |
aoqi@0 | 2388 | // |
aoqi@0 | 2389 | // The other race involves two threads alternately trapping at |
aoqi@0 | 2390 | // different addresses and failing to unguard the page, resulting in |
aoqi@0 | 2391 | // an endless loop. This condition is probably even more unlikely |
aoqi@0 | 2392 | // than the first. |
aoqi@0 | 2393 | // |
aoqi@0 | 2394 | // Although both cases could be avoided by using locks or thread |
aoqi@0 | 2395 | // local last_addr, these solutions are unnecessary complication: |
aoqi@0 | 2396 | // this handler is a best-effort safety net, not a complete solution. |
aoqi@0 | 2397 | // It is disabled by default and should only be used as a workaround |
aoqi@0 | 2398 | // in case we missed any no-execute-unsafe VM code. |
aoqi@0 | 2399 | |
aoqi@0 | 2400 | last_addr = addr; |
aoqi@0 | 2401 | |
aoqi@0 | 2402 | return EXCEPTION_CONTINUE_EXECUTION; |
aoqi@0 | 2403 | } |
aoqi@0 | 2404 | } |
aoqi@0 | 2405 | |
aoqi@0 | 2406 | // Last unguard failed or not unguarding |
aoqi@0 | 2407 | tty->print_raw_cr("Execution protection violation"); |
aoqi@0 | 2408 | report_error(t, exception_code, addr, exceptionInfo->ExceptionRecord, |
aoqi@0 | 2409 | exceptionInfo->ContextRecord); |
aoqi@0 | 2410 | return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 2411 | } |
aoqi@0 | 2412 | } |
aoqi@0 | 2413 | #endif // _WIN64 |
aoqi@0 | 2414 | |
aoqi@0 | 2415 | // Check to see if we caught the safepoint code in the |
aoqi@0 | 2416 | // process of write protecting the memory serialization page. |
aoqi@0 | 2417 | // It write enables the page immediately after protecting it |
aoqi@0 | 2418 | // so just return. |
aoqi@0 | 2419 | if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) { |
aoqi@0 | 2420 | JavaThread* thread = (JavaThread*) t; |
aoqi@0 | 2421 | PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; |
aoqi@0 | 2422 | address addr = (address) exceptionRecord->ExceptionInformation[1]; |
aoqi@0 | 2423 | if ( os::is_memory_serialize_page(thread, addr) ) { |
aoqi@0 | 2424 | // Block current thread until the memory serialize page permission restored. |
aoqi@0 | 2425 | os::block_on_serialize_page_trap(); |
aoqi@0 | 2426 | return EXCEPTION_CONTINUE_EXECUTION; |
aoqi@0 | 2427 | } |
aoqi@0 | 2428 | } |
aoqi@0 | 2429 | |
aoqi@0 | 2430 | if ((exception_code == EXCEPTION_ACCESS_VIOLATION) && |
aoqi@0 | 2431 | VM_Version::is_cpuinfo_segv_addr(pc)) { |
aoqi@0 | 2432 | // Verify that OS save/restore AVX registers. |
aoqi@0 | 2433 | return Handle_Exception(exceptionInfo, VM_Version::cpuinfo_cont_addr()); |
aoqi@0 | 2434 | } |
aoqi@0 | 2435 | |
aoqi@0 | 2436 | if (t != NULL && t->is_Java_thread()) { |
aoqi@0 | 2437 | JavaThread* thread = (JavaThread*) t; |
aoqi@0 | 2438 | bool in_java = thread->thread_state() == _thread_in_Java; |
aoqi@0 | 2439 | |
aoqi@0 | 2440 | // Handle potential stack overflows up front. |
aoqi@0 | 2441 | if (exception_code == EXCEPTION_STACK_OVERFLOW) { |
aoqi@0 | 2442 | if (os::uses_stack_guard_pages()) { |
aoqi@0 | 2443 | #ifdef _M_IA64 |
aoqi@0 | 2444 | // Use guard page for register stack. |
aoqi@0 | 2445 | PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; |
aoqi@0 | 2446 | address addr = (address) exceptionRecord->ExceptionInformation[1]; |
aoqi@0 | 2447 | // Check for a register stack overflow on Itanium |
aoqi@0 | 2448 | if (thread->addr_inside_register_stack_red_zone(addr)) { |
aoqi@0 | 2449 | // Fatal red zone violation happens if the Java program |
aoqi@0 | 2450 | // catches a StackOverflow error and does so much processing |
aoqi@0 | 2451 | // that it runs beyond the unprotected yellow guard zone. As |
aoqi@0 | 2452 | // a result, we are out of here. |
aoqi@0 | 2453 | fatal("ERROR: Unrecoverable stack overflow happened. JVM will exit."); |
aoqi@0 | 2454 | } else if(thread->addr_inside_register_stack(addr)) { |
aoqi@0 | 2455 | // Disable the yellow zone which sets the state that |
aoqi@0 | 2456 | // we've got a stack overflow problem. |
aoqi@0 | 2457 | if (thread->stack_yellow_zone_enabled()) { |
aoqi@0 | 2458 | thread->disable_stack_yellow_zone(); |
aoqi@0 | 2459 | } |
aoqi@0 | 2460 | // Give us some room to process the exception. |
aoqi@0 | 2461 | thread->disable_register_stack_guard(); |
aoqi@0 | 2462 | // Tracing with +Verbose. |
aoqi@0 | 2463 | if (Verbose) { |
aoqi@0 | 2464 | tty->print_cr("SOF Compiled Register Stack overflow at " INTPTR_FORMAT " (SIGSEGV)", pc); |
aoqi@0 | 2465 | tty->print_cr("Register Stack access at " INTPTR_FORMAT, addr); |
aoqi@0 | 2466 | tty->print_cr("Register Stack base " INTPTR_FORMAT, thread->register_stack_base()); |
aoqi@0 | 2467 | tty->print_cr("Register Stack [" INTPTR_FORMAT "," INTPTR_FORMAT "]", |
aoqi@0 | 2468 | thread->register_stack_base(), |
aoqi@0 | 2469 | thread->register_stack_base() + thread->stack_size()); |
aoqi@0 | 2470 | } |
aoqi@0 | 2471 | |
aoqi@0 | 2472 | // Reguard the permanent register stack red zone just to be sure. |
aoqi@0 | 2473 | // We saw Windows silently disabling this without telling us. |
aoqi@0 | 2474 | thread->enable_register_stack_red_zone(); |
aoqi@0 | 2475 | |
aoqi@0 | 2476 | return Handle_Exception(exceptionInfo, |
aoqi@0 | 2477 | SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); |
aoqi@0 | 2478 | } |
aoqi@0 | 2479 | #endif |
aoqi@0 | 2480 | if (thread->stack_yellow_zone_enabled()) { |
aoqi@0 | 2481 | // Yellow zone violation. The o/s has unprotected the first yellow |
aoqi@0 | 2482 | // zone page for us. Note: must call disable_stack_yellow_zone to |
aoqi@0 | 2483 | // update the enabled status, even if the zone contains only one page. |
aoqi@0 | 2484 | thread->disable_stack_yellow_zone(); |
aoqi@0 | 2485 | // If not in java code, return and hope for the best. |
aoqi@0 | 2486 | return in_java ? Handle_Exception(exceptionInfo, |
aoqi@0 | 2487 | SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)) |
aoqi@0 | 2488 | : EXCEPTION_CONTINUE_EXECUTION; |
aoqi@0 | 2489 | } else { |
aoqi@0 | 2490 | // Fatal red zone violation. |
aoqi@0 | 2491 | thread->disable_stack_red_zone(); |
aoqi@0 | 2492 | tty->print_raw_cr("An unrecoverable stack overflow has occurred."); |
aoqi@0 | 2493 | report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, |
aoqi@0 | 2494 | exceptionInfo->ContextRecord); |
aoqi@0 | 2495 | return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 2496 | } |
aoqi@0 | 2497 | } else if (in_java) { |
aoqi@0 | 2498 | // JVM-managed guard pages cannot be used on win95/98. The o/s provides |
aoqi@0 | 2499 | // a one-time-only guard page, which it has released to us. The next |
aoqi@0 | 2500 | // stack overflow on this thread will result in an ACCESS_VIOLATION. |
aoqi@0 | 2501 | return Handle_Exception(exceptionInfo, |
aoqi@0 | 2502 | SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); |
aoqi@0 | 2503 | } else { |
aoqi@0 | 2504 | // Can only return and hope for the best. Further stack growth will |
aoqi@0 | 2505 | // result in an ACCESS_VIOLATION. |
aoqi@0 | 2506 | return EXCEPTION_CONTINUE_EXECUTION; |
aoqi@0 | 2507 | } |
aoqi@0 | 2508 | } else if (exception_code == EXCEPTION_ACCESS_VIOLATION) { |
aoqi@0 | 2509 | // Either stack overflow or null pointer exception. |
aoqi@0 | 2510 | if (in_java) { |
aoqi@0 | 2511 | PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; |
aoqi@0 | 2512 | address addr = (address) exceptionRecord->ExceptionInformation[1]; |
aoqi@0 | 2513 | address stack_end = thread->stack_base() - thread->stack_size(); |
aoqi@0 | 2514 | if (addr < stack_end && addr >= stack_end - os::vm_page_size()) { |
aoqi@0 | 2515 | // Stack overflow. |
aoqi@0 | 2516 | assert(!os::uses_stack_guard_pages(), |
aoqi@0 | 2517 | "should be caught by red zone code above."); |
aoqi@0 | 2518 | return Handle_Exception(exceptionInfo, |
aoqi@0 | 2519 | SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); |
aoqi@0 | 2520 | } |
aoqi@0 | 2521 | // |
aoqi@0 | 2522 | // Check for safepoint polling and implicit null |
aoqi@0 | 2523 | // We only expect null pointers in the stubs (vtable) |
aoqi@0 | 2524 | // the rest are checked explicitly now. |
aoqi@0 | 2525 | // |
aoqi@0 | 2526 | CodeBlob* cb = CodeCache::find_blob(pc); |
aoqi@0 | 2527 | if (cb != NULL) { |
aoqi@0 | 2528 | if (os::is_poll_address(addr)) { |
aoqi@0 | 2529 | address stub = SharedRuntime::get_poll_stub(pc); |
aoqi@0 | 2530 | return Handle_Exception(exceptionInfo, stub); |
aoqi@0 | 2531 | } |
aoqi@0 | 2532 | } |
aoqi@0 | 2533 | { |
aoqi@0 | 2534 | #ifdef _WIN64 |
aoqi@0 | 2535 | // |
aoqi@0 | 2536 | // If it's a legal stack address map the entire region in |
aoqi@0 | 2537 | // |
aoqi@0 | 2538 | PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; |
aoqi@0 | 2539 | address addr = (address) exceptionRecord->ExceptionInformation[1]; |
aoqi@0 | 2540 | if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base() ) { |
aoqi@0 | 2541 | addr = (address)((uintptr_t)addr & |
aoqi@0 | 2542 | (~((uintptr_t)os::vm_page_size() - (uintptr_t)1))); |
aoqi@0 | 2543 | os::commit_memory((char *)addr, thread->stack_base() - addr, |
aoqi@0 | 2544 | !ExecMem); |
aoqi@0 | 2545 | return EXCEPTION_CONTINUE_EXECUTION; |
aoqi@0 | 2546 | } |
aoqi@0 | 2547 | else |
aoqi@0 | 2548 | #endif |
aoqi@0 | 2549 | { |
aoqi@0 | 2550 | // Null pointer exception. |
aoqi@0 | 2551 | #ifdef _M_IA64 |
aoqi@0 | 2552 | // Process implicit null checks in compiled code. Note: Implicit null checks |
aoqi@0 | 2553 | // can happen even if "ImplicitNullChecks" is disabled, e.g. in vtable stubs. |
aoqi@0 | 2554 | if (CodeCache::contains((void*) pc_unix_format) && !MacroAssembler::needs_explicit_null_check((intptr_t) addr)) { |
aoqi@0 | 2555 | CodeBlob *cb = CodeCache::find_blob_unsafe(pc_unix_format); |
aoqi@0 | 2556 | // Handle implicit null check in UEP method entry |
aoqi@0 | 2557 | if (cb && (cb->is_frame_complete_at(pc) || |
aoqi@0 | 2558 | (cb->is_nmethod() && ((nmethod *)cb)->inlinecache_check_contains(pc)))) { |
aoqi@0 | 2559 | if (Verbose) { |
aoqi@0 | 2560 | intptr_t *bundle_start = (intptr_t*) ((intptr_t) pc_unix_format & 0xFFFFFFFFFFFFFFF0); |
aoqi@0 | 2561 | tty->print_cr("trap: null_check at " INTPTR_FORMAT " (SIGSEGV)", pc_unix_format); |
aoqi@0 | 2562 | tty->print_cr(" to addr " INTPTR_FORMAT, addr); |
aoqi@0 | 2563 | tty->print_cr(" bundle is " INTPTR_FORMAT " (high), " INTPTR_FORMAT " (low)", |
aoqi@0 | 2564 | *(bundle_start + 1), *bundle_start); |
aoqi@0 | 2565 | } |
aoqi@0 | 2566 | return Handle_Exception(exceptionInfo, |
aoqi@0 | 2567 | SharedRuntime::continuation_for_implicit_exception(thread, pc_unix_format, SharedRuntime::IMPLICIT_NULL)); |
aoqi@0 | 2568 | } |
aoqi@0 | 2569 | } |
aoqi@0 | 2570 | |
aoqi@0 | 2571 | // Implicit null checks were processed above. Hence, we should not reach |
aoqi@0 | 2572 | // here in the usual case => die! |
aoqi@0 | 2573 | if (Verbose) tty->print_raw_cr("Access violation, possible null pointer exception"); |
aoqi@0 | 2574 | report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, |
aoqi@0 | 2575 | exceptionInfo->ContextRecord); |
aoqi@0 | 2576 | return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 2577 | |
aoqi@0 | 2578 | #else // !IA64 |
aoqi@0 | 2579 | |
aoqi@0 | 2580 | // Windows 98 reports faulting addresses incorrectly |
aoqi@0 | 2581 | if (!MacroAssembler::needs_explicit_null_check((intptr_t)addr) || |
aoqi@0 | 2582 | !os::win32::is_nt()) { |
aoqi@0 | 2583 | address stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
aoqi@0 | 2584 | if (stub != NULL) return Handle_Exception(exceptionInfo, stub); |
aoqi@0 | 2585 | } |
aoqi@0 | 2586 | report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, |
aoqi@0 | 2587 | exceptionInfo->ContextRecord); |
aoqi@0 | 2588 | return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 2589 | #endif |
aoqi@0 | 2590 | } |
aoqi@0 | 2591 | } |
aoqi@0 | 2592 | } |
aoqi@0 | 2593 | |
aoqi@0 | 2594 | #ifdef _WIN64 |
aoqi@0 | 2595 | // Special care for fast JNI field accessors. |
aoqi@0 | 2596 | // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks |
aoqi@0 | 2597 | // in and the heap gets shrunk before the field access. |
aoqi@0 | 2598 | if (exception_code == EXCEPTION_ACCESS_VIOLATION) { |
aoqi@0 | 2599 | address addr = JNI_FastGetField::find_slowcase_pc(pc); |
aoqi@0 | 2600 | if (addr != (address)-1) { |
aoqi@0 | 2601 | return Handle_Exception(exceptionInfo, addr); |
aoqi@0 | 2602 | } |
aoqi@0 | 2603 | } |
aoqi@0 | 2604 | #endif |
aoqi@0 | 2605 | |
aoqi@0 | 2606 | // Stack overflow or null pointer exception in native code. |
aoqi@0 | 2607 | report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, |
aoqi@0 | 2608 | exceptionInfo->ContextRecord); |
aoqi@0 | 2609 | return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 2610 | } // /EXCEPTION_ACCESS_VIOLATION |
aoqi@0 | 2611 | // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
aoqi@0 | 2612 | #if defined _M_IA64 |
aoqi@0 | 2613 | else if ((exception_code == EXCEPTION_ILLEGAL_INSTRUCTION || |
aoqi@0 | 2614 | exception_code == EXCEPTION_ILLEGAL_INSTRUCTION_2)) { |
aoqi@0 | 2615 | M37 handle_wrong_method_break(0, NativeJump::HANDLE_WRONG_METHOD, PR0); |
aoqi@0 | 2616 | |
aoqi@0 | 2617 | // Compiled method patched to be non entrant? Following conditions must apply: |
aoqi@0 | 2618 | // 1. must be first instruction in bundle |
aoqi@0 | 2619 | // 2. must be a break instruction with appropriate code |
aoqi@0 | 2620 | if((((uint64_t) pc & 0x0F) == 0) && |
aoqi@0 | 2621 | (((IPF_Bundle*) pc)->get_slot0() == handle_wrong_method_break.bits())) { |
aoqi@0 | 2622 | return Handle_Exception(exceptionInfo, |
aoqi@0 | 2623 | (address)SharedRuntime::get_handle_wrong_method_stub()); |
aoqi@0 | 2624 | } |
aoqi@0 | 2625 | } // /EXCEPTION_ILLEGAL_INSTRUCTION |
aoqi@0 | 2626 | #endif |
aoqi@0 | 2627 | |
aoqi@0 | 2628 | |
aoqi@0 | 2629 | if (in_java) { |
aoqi@0 | 2630 | switch (exception_code) { |
aoqi@0 | 2631 | case EXCEPTION_INT_DIVIDE_BY_ZERO: |
aoqi@0 | 2632 | return Handle_Exception(exceptionInfo, SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO)); |
aoqi@0 | 2633 | |
aoqi@0 | 2634 | case EXCEPTION_INT_OVERFLOW: |
aoqi@0 | 2635 | return Handle_IDiv_Exception(exceptionInfo); |
aoqi@0 | 2636 | |
aoqi@0 | 2637 | } // switch |
aoqi@0 | 2638 | } |
aoqi@0 | 2639 | #ifndef _WIN64 |
aoqi@0 | 2640 | if (((thread->thread_state() == _thread_in_Java) || |
aoqi@0 | 2641 | (thread->thread_state() == _thread_in_native)) && |
aoqi@0 | 2642 | exception_code != EXCEPTION_UNCAUGHT_CXX_EXCEPTION) |
aoqi@0 | 2643 | { |
aoqi@0 | 2644 | LONG result=Handle_FLT_Exception(exceptionInfo); |
aoqi@0 | 2645 | if (result==EXCEPTION_CONTINUE_EXECUTION) return result; |
aoqi@0 | 2646 | } |
aoqi@0 | 2647 | #endif //_WIN64 |
aoqi@0 | 2648 | } |
aoqi@0 | 2649 | |
aoqi@0 | 2650 | if (exception_code != EXCEPTION_BREAKPOINT) { |
aoqi@0 | 2651 | report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, |
aoqi@0 | 2652 | exceptionInfo->ContextRecord); |
aoqi@0 | 2653 | } |
aoqi@0 | 2654 | return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 2655 | } |
aoqi@0 | 2656 | |
aoqi@0 | 2657 | #ifndef _WIN64 |
aoqi@0 | 2658 | // Special care for fast JNI accessors. |
aoqi@0 | 2659 | // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in and |
aoqi@0 | 2660 | // the heap gets shrunk before the field access. |
aoqi@0 | 2661 | // Need to install our own structured exception handler since native code may |
aoqi@0 | 2662 | // install its own. |
aoqi@0 | 2663 | LONG WINAPI fastJNIAccessorExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) { |
aoqi@0 | 2664 | DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; |
aoqi@0 | 2665 | if (exception_code == EXCEPTION_ACCESS_VIOLATION) { |
aoqi@0 | 2666 | address pc = (address) exceptionInfo->ContextRecord->Eip; |
aoqi@0 | 2667 | address addr = JNI_FastGetField::find_slowcase_pc(pc); |
aoqi@0 | 2668 | if (addr != (address)-1) { |
aoqi@0 | 2669 | return Handle_Exception(exceptionInfo, addr); |
aoqi@0 | 2670 | } |
aoqi@0 | 2671 | } |
aoqi@0 | 2672 | return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 2673 | } |
aoqi@0 | 2674 | |
aoqi@0 | 2675 | #define DEFINE_FAST_GETFIELD(Return,Fieldname,Result) \ |
aoqi@0 | 2676 | Return JNICALL jni_fast_Get##Result##Field_wrapper(JNIEnv *env, jobject obj, jfieldID fieldID) { \ |
aoqi@0 | 2677 | __try { \ |
aoqi@0 | 2678 | return (*JNI_FastGetField::jni_fast_Get##Result##Field_fp)(env, obj, fieldID); \ |
aoqi@0 | 2679 | } __except(fastJNIAccessorExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) { \ |
aoqi@0 | 2680 | } \ |
aoqi@0 | 2681 | return 0; \ |
aoqi@0 | 2682 | } |
aoqi@0 | 2683 | |
aoqi@0 | 2684 | DEFINE_FAST_GETFIELD(jboolean, bool, Boolean) |
aoqi@0 | 2685 | DEFINE_FAST_GETFIELD(jbyte, byte, Byte) |
aoqi@0 | 2686 | DEFINE_FAST_GETFIELD(jchar, char, Char) |
aoqi@0 | 2687 | DEFINE_FAST_GETFIELD(jshort, short, Short) |
aoqi@0 | 2688 | DEFINE_FAST_GETFIELD(jint, int, Int) |
aoqi@0 | 2689 | DEFINE_FAST_GETFIELD(jlong, long, Long) |
aoqi@0 | 2690 | DEFINE_FAST_GETFIELD(jfloat, float, Float) |
aoqi@0 | 2691 | DEFINE_FAST_GETFIELD(jdouble, double, Double) |
aoqi@0 | 2692 | |
aoqi@0 | 2693 | address os::win32::fast_jni_accessor_wrapper(BasicType type) { |
aoqi@0 | 2694 | switch (type) { |
aoqi@0 | 2695 | case T_BOOLEAN: return (address)jni_fast_GetBooleanField_wrapper; |
aoqi@0 | 2696 | case T_BYTE: return (address)jni_fast_GetByteField_wrapper; |
aoqi@0 | 2697 | case T_CHAR: return (address)jni_fast_GetCharField_wrapper; |
aoqi@0 | 2698 | case T_SHORT: return (address)jni_fast_GetShortField_wrapper; |
aoqi@0 | 2699 | case T_INT: return (address)jni_fast_GetIntField_wrapper; |
aoqi@0 | 2700 | case T_LONG: return (address)jni_fast_GetLongField_wrapper; |
aoqi@0 | 2701 | case T_FLOAT: return (address)jni_fast_GetFloatField_wrapper; |
aoqi@0 | 2702 | case T_DOUBLE: return (address)jni_fast_GetDoubleField_wrapper; |
aoqi@0 | 2703 | default: ShouldNotReachHere(); |
aoqi@0 | 2704 | } |
aoqi@0 | 2705 | return (address)-1; |
aoqi@0 | 2706 | } |
aoqi@0 | 2707 | #endif |
aoqi@0 | 2708 | |
aoqi@0 | 2709 | void os::win32::call_test_func_with_wrapper(void (*funcPtr)(void)) { |
aoqi@0 | 2710 | // Install a win32 structured exception handler around the test |
aoqi@0 | 2711 | // function call so the VM can generate an error dump if needed. |
aoqi@0 | 2712 | __try { |
aoqi@0 | 2713 | (*funcPtr)(); |
aoqi@0 | 2714 | } __except(topLevelExceptionFilter( |
aoqi@0 | 2715 | (_EXCEPTION_POINTERS*)_exception_info())) { |
aoqi@0 | 2716 | // Nothing to do. |
aoqi@0 | 2717 | } |
aoqi@0 | 2718 | } |
aoqi@0 | 2719 | |
aoqi@0 | 2720 | // Virtual Memory |
aoqi@0 | 2721 | |
aoqi@0 | 2722 | int os::vm_page_size() { return os::win32::vm_page_size(); } |
aoqi@0 | 2723 | int os::vm_allocation_granularity() { |
aoqi@0 | 2724 | return os::win32::vm_allocation_granularity(); |
aoqi@0 | 2725 | } |
aoqi@0 | 2726 | |
aoqi@0 | 2727 | // Windows large page support is available on Windows 2003. In order to use |
aoqi@0 | 2728 | // large page memory, the administrator must first assign additional privilege |
aoqi@0 | 2729 | // to the user: |
aoqi@0 | 2730 | // + select Control Panel -> Administrative Tools -> Local Security Policy |
aoqi@0 | 2731 | // + select Local Policies -> User Rights Assignment |
aoqi@0 | 2732 | // + double click "Lock pages in memory", add users and/or groups |
aoqi@0 | 2733 | // + reboot |
aoqi@0 | 2734 | // Note the above steps are needed for administrator as well, as administrators |
aoqi@0 | 2735 | // by default do not have the privilege to lock pages in memory. |
aoqi@0 | 2736 | // |
aoqi@0 | 2737 | // Note about Windows 2003: although the API supports committing large page |
aoqi@0 | 2738 | // memory on a page-by-page basis and VirtualAlloc() returns success under this |
aoqi@0 | 2739 | // scenario, I found through experiment it only uses large page if the entire |
aoqi@0 | 2740 | // memory region is reserved and committed in a single VirtualAlloc() call. |
aoqi@0 | 2741 | // This makes Windows large page support more or less like Solaris ISM, in |
aoqi@0 | 2742 | // that the entire heap must be committed upfront. This probably will change |
aoqi@0 | 2743 | // in the future, if so the code below needs to be revisited. |
aoqi@0 | 2744 | |
aoqi@0 | 2745 | #ifndef MEM_LARGE_PAGES |
aoqi@0 | 2746 | #define MEM_LARGE_PAGES 0x20000000 |
aoqi@0 | 2747 | #endif |
aoqi@0 | 2748 | |
aoqi@0 | 2749 | static HANDLE _hProcess; |
aoqi@0 | 2750 | static HANDLE _hToken; |
aoqi@0 | 2751 | |
aoqi@0 | 2752 | // Container for NUMA node list info |
aoqi@0 | 2753 | class NUMANodeListHolder { |
aoqi@0 | 2754 | private: |
aoqi@0 | 2755 | int *_numa_used_node_list; // allocated below |
aoqi@0 | 2756 | int _numa_used_node_count; |
aoqi@0 | 2757 | |
aoqi@0 | 2758 | void free_node_list() { |
aoqi@0 | 2759 | if (_numa_used_node_list != NULL) { |
aoqi@0 | 2760 | FREE_C_HEAP_ARRAY(int, _numa_used_node_list, mtInternal); |
aoqi@0 | 2761 | } |
aoqi@0 | 2762 | } |
aoqi@0 | 2763 | |
aoqi@0 | 2764 | public: |
aoqi@0 | 2765 | NUMANodeListHolder() { |
aoqi@0 | 2766 | _numa_used_node_count = 0; |
aoqi@0 | 2767 | _numa_used_node_list = NULL; |
aoqi@0 | 2768 | // do rest of initialization in build routine (after function pointers are set up) |
aoqi@0 | 2769 | } |
aoqi@0 | 2770 | |
aoqi@0 | 2771 | ~NUMANodeListHolder() { |
aoqi@0 | 2772 | free_node_list(); |
aoqi@0 | 2773 | } |
aoqi@0 | 2774 | |
aoqi@0 | 2775 | bool build() { |
aoqi@0 | 2776 | DWORD_PTR proc_aff_mask; |
aoqi@0 | 2777 | DWORD_PTR sys_aff_mask; |
aoqi@0 | 2778 | if (!GetProcessAffinityMask(GetCurrentProcess(), &proc_aff_mask, &sys_aff_mask)) return false; |
aoqi@0 | 2779 | ULONG highest_node_number; |
aoqi@0 | 2780 | if (!os::Kernel32Dll::GetNumaHighestNodeNumber(&highest_node_number)) return false; |
aoqi@0 | 2781 | free_node_list(); |
aoqi@0 | 2782 | _numa_used_node_list = NEW_C_HEAP_ARRAY(int, highest_node_number + 1, mtInternal); |
aoqi@0 | 2783 | for (unsigned int i = 0; i <= highest_node_number; i++) { |
aoqi@0 | 2784 | ULONGLONG proc_mask_numa_node; |
aoqi@0 | 2785 | if (!os::Kernel32Dll::GetNumaNodeProcessorMask(i, &proc_mask_numa_node)) return false; |
aoqi@0 | 2786 | if ((proc_aff_mask & proc_mask_numa_node)!=0) { |
aoqi@0 | 2787 | _numa_used_node_list[_numa_used_node_count++] = i; |
aoqi@0 | 2788 | } |
aoqi@0 | 2789 | } |
aoqi@0 | 2790 | return (_numa_used_node_count > 1); |
aoqi@0 | 2791 | } |
aoqi@0 | 2792 | |
aoqi@0 | 2793 | int get_count() {return _numa_used_node_count;} |
aoqi@0 | 2794 | int get_node_list_entry(int n) { |
aoqi@0 | 2795 | // for indexes out of range, returns -1 |
aoqi@0 | 2796 | return (n < _numa_used_node_count ? _numa_used_node_list[n] : -1); |
aoqi@0 | 2797 | } |
aoqi@0 | 2798 | |
aoqi@0 | 2799 | } numa_node_list_holder; |
aoqi@0 | 2800 | |
aoqi@0 | 2801 | |
aoqi@0 | 2802 | |
aoqi@0 | 2803 | static size_t _large_page_size = 0; |
aoqi@0 | 2804 | |
aoqi@0 | 2805 | static bool resolve_functions_for_large_page_init() { |
aoqi@0 | 2806 | return os::Kernel32Dll::GetLargePageMinimumAvailable() && |
aoqi@0 | 2807 | os::Advapi32Dll::AdvapiAvailable(); |
aoqi@0 | 2808 | } |
aoqi@0 | 2809 | |
aoqi@0 | 2810 | static bool request_lock_memory_privilege() { |
aoqi@0 | 2811 | _hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, |
aoqi@0 | 2812 | os::current_process_id()); |
aoqi@0 | 2813 | |
aoqi@0 | 2814 | LUID luid; |
aoqi@0 | 2815 | if (_hProcess != NULL && |
aoqi@0 | 2816 | os::Advapi32Dll::OpenProcessToken(_hProcess, TOKEN_ADJUST_PRIVILEGES, &_hToken) && |
aoqi@0 | 2817 | os::Advapi32Dll::LookupPrivilegeValue(NULL, "SeLockMemoryPrivilege", &luid)) { |
aoqi@0 | 2818 | |
aoqi@0 | 2819 | TOKEN_PRIVILEGES tp; |
aoqi@0 | 2820 | tp.PrivilegeCount = 1; |
aoqi@0 | 2821 | tp.Privileges[0].Luid = luid; |
aoqi@0 | 2822 | tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; |
aoqi@0 | 2823 | |
aoqi@0 | 2824 | // AdjustTokenPrivileges() may return TRUE even when it couldn't change the |
aoqi@0 | 2825 | // privilege. Check GetLastError() too. See MSDN document. |
aoqi@0 | 2826 | if (os::Advapi32Dll::AdjustTokenPrivileges(_hToken, false, &tp, sizeof(tp), NULL, NULL) && |
aoqi@0 | 2827 | (GetLastError() == ERROR_SUCCESS)) { |
aoqi@0 | 2828 | return true; |
aoqi@0 | 2829 | } |
aoqi@0 | 2830 | } |
aoqi@0 | 2831 | |
aoqi@0 | 2832 | return false; |
aoqi@0 | 2833 | } |
aoqi@0 | 2834 | |
aoqi@0 | 2835 | static void cleanup_after_large_page_init() { |
aoqi@0 | 2836 | if (_hProcess) CloseHandle(_hProcess); |
aoqi@0 | 2837 | _hProcess = NULL; |
aoqi@0 | 2838 | if (_hToken) CloseHandle(_hToken); |
aoqi@0 | 2839 | _hToken = NULL; |
aoqi@0 | 2840 | } |
aoqi@0 | 2841 | |
aoqi@0 | 2842 | static bool numa_interleaving_init() { |
aoqi@0 | 2843 | bool success = false; |
aoqi@0 | 2844 | bool use_numa_interleaving_specified = !FLAG_IS_DEFAULT(UseNUMAInterleaving); |
aoqi@0 | 2845 | |
aoqi@0 | 2846 | // print a warning if UseNUMAInterleaving flag is specified on command line |
aoqi@0 | 2847 | bool warn_on_failure = use_numa_interleaving_specified; |
aoqi@0 | 2848 | # define WARN(msg) if (warn_on_failure) { warning(msg); } |
aoqi@0 | 2849 | |
aoqi@0 | 2850 | // NUMAInterleaveGranularity cannot be less than vm_allocation_granularity (or _large_page_size if using large pages) |
aoqi@0 | 2851 | size_t min_interleave_granularity = UseLargePages ? _large_page_size : os::vm_allocation_granularity(); |
aoqi@0 | 2852 | NUMAInterleaveGranularity = align_size_up(NUMAInterleaveGranularity, min_interleave_granularity); |
aoqi@0 | 2853 | |
aoqi@0 | 2854 | if (os::Kernel32Dll::NumaCallsAvailable()) { |
aoqi@0 | 2855 | if (numa_node_list_holder.build()) { |
aoqi@0 | 2856 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 2857 | tty->print("NUMA UsedNodeCount=%d, namely ", numa_node_list_holder.get_count()); |
aoqi@0 | 2858 | for (int i = 0; i < numa_node_list_holder.get_count(); i++) { |
aoqi@0 | 2859 | tty->print("%d ", numa_node_list_holder.get_node_list_entry(i)); |
aoqi@0 | 2860 | } |
aoqi@0 | 2861 | tty->print("\n"); |
aoqi@0 | 2862 | } |
aoqi@0 | 2863 | success = true; |
aoqi@0 | 2864 | } else { |
aoqi@0 | 2865 | WARN("Process does not cover multiple NUMA nodes."); |
aoqi@0 | 2866 | } |
aoqi@0 | 2867 | } else { |
aoqi@0 | 2868 | WARN("NUMA Interleaving is not supported by the operating system."); |
aoqi@0 | 2869 | } |
aoqi@0 | 2870 | if (!success) { |
aoqi@0 | 2871 | if (use_numa_interleaving_specified) WARN("...Ignoring UseNUMAInterleaving flag."); |
aoqi@0 | 2872 | } |
aoqi@0 | 2873 | return success; |
aoqi@0 | 2874 | #undef WARN |
aoqi@0 | 2875 | } |
aoqi@0 | 2876 | |
aoqi@0 | 2877 | // this routine is used whenever we need to reserve a contiguous VA range |
aoqi@0 | 2878 | // but we need to make separate VirtualAlloc calls for each piece of the range |
aoqi@0 | 2879 | // Reasons for doing this: |
aoqi@0 | 2880 | // * UseLargePagesIndividualAllocation was set (normally only needed on WS2003 but possible to be set otherwise) |
aoqi@0 | 2881 | // * UseNUMAInterleaving requires a separate node for each piece |
aoqi@0 | 2882 | static char* allocate_pages_individually(size_t bytes, char* addr, DWORD flags, DWORD prot, |
aoqi@0 | 2883 | bool should_inject_error=false) { |
aoqi@0 | 2884 | char * p_buf; |
aoqi@0 | 2885 | // note: at setup time we guaranteed that NUMAInterleaveGranularity was aligned up to a page size |
aoqi@0 | 2886 | size_t page_size = UseLargePages ? _large_page_size : os::vm_allocation_granularity(); |
aoqi@0 | 2887 | size_t chunk_size = UseNUMAInterleaving ? NUMAInterleaveGranularity : page_size; |
aoqi@0 | 2888 | |
aoqi@0 | 2889 | // first reserve enough address space in advance since we want to be |
aoqi@0 | 2890 | // able to break a single contiguous virtual address range into multiple |
aoqi@0 | 2891 | // large page commits but WS2003 does not allow reserving large page space |
aoqi@0 | 2892 | // so we just use 4K pages for reserve, this gives us a legal contiguous |
aoqi@0 | 2893 | // address space. then we will deallocate that reservation, and re alloc |
aoqi@0 | 2894 | // using large pages |
aoqi@0 | 2895 | const size_t size_of_reserve = bytes + chunk_size; |
aoqi@0 | 2896 | if (bytes > size_of_reserve) { |
aoqi@0 | 2897 | // Overflowed. |
aoqi@0 | 2898 | return NULL; |
aoqi@0 | 2899 | } |
aoqi@0 | 2900 | p_buf = (char *) VirtualAlloc(addr, |
aoqi@0 | 2901 | size_of_reserve, // size of Reserve |
aoqi@0 | 2902 | MEM_RESERVE, |
aoqi@0 | 2903 | PAGE_READWRITE); |
aoqi@0 | 2904 | // If reservation failed, return NULL |
aoqi@0 | 2905 | if (p_buf == NULL) return NULL; |
aoqi@0 | 2906 | MemTracker::record_virtual_memory_reserve((address)p_buf, size_of_reserve, mtNone, CALLER_PC); |
aoqi@0 | 2907 | os::release_memory(p_buf, bytes + chunk_size); |
aoqi@0 | 2908 | |
aoqi@0 | 2909 | // we still need to round up to a page boundary (in case we are using large pages) |
aoqi@0 | 2910 | // but not to a chunk boundary (in case InterleavingGranularity doesn't align with page size) |
aoqi@0 | 2911 | // instead we handle this in the bytes_to_rq computation below |
aoqi@0 | 2912 | p_buf = (char *) align_size_up((size_t)p_buf, page_size); |
aoqi@0 | 2913 | |
aoqi@0 | 2914 | // now go through and allocate one chunk at a time until all bytes are |
aoqi@0 | 2915 | // allocated |
aoqi@0 | 2916 | size_t bytes_remaining = bytes; |
aoqi@0 | 2917 | // An overflow of align_size_up() would have been caught above |
aoqi@0 | 2918 | // in the calculation of size_of_reserve. |
aoqi@0 | 2919 | char * next_alloc_addr = p_buf; |
aoqi@0 | 2920 | HANDLE hProc = GetCurrentProcess(); |
aoqi@0 | 2921 | |
aoqi@0 | 2922 | #ifdef ASSERT |
aoqi@0 | 2923 | // Variable for the failure injection |
aoqi@0 | 2924 | long ran_num = os::random(); |
aoqi@0 | 2925 | size_t fail_after = ran_num % bytes; |
aoqi@0 | 2926 | #endif |
aoqi@0 | 2927 | |
aoqi@0 | 2928 | int count=0; |
aoqi@0 | 2929 | while (bytes_remaining) { |
aoqi@0 | 2930 | // select bytes_to_rq to get to the next chunk_size boundary |
aoqi@0 | 2931 | |
aoqi@0 | 2932 | size_t bytes_to_rq = MIN2(bytes_remaining, chunk_size - ((size_t)next_alloc_addr % chunk_size)); |
aoqi@0 | 2933 | // Note allocate and commit |
aoqi@0 | 2934 | char * p_new; |
aoqi@0 | 2935 | |
aoqi@0 | 2936 | #ifdef ASSERT |
aoqi@0 | 2937 | bool inject_error_now = should_inject_error && (bytes_remaining <= fail_after); |
aoqi@0 | 2938 | #else |
aoqi@0 | 2939 | const bool inject_error_now = false; |
aoqi@0 | 2940 | #endif |
aoqi@0 | 2941 | |
aoqi@0 | 2942 | if (inject_error_now) { |
aoqi@0 | 2943 | p_new = NULL; |
aoqi@0 | 2944 | } else { |
aoqi@0 | 2945 | if (!UseNUMAInterleaving) { |
aoqi@0 | 2946 | p_new = (char *) VirtualAlloc(next_alloc_addr, |
aoqi@0 | 2947 | bytes_to_rq, |
aoqi@0 | 2948 | flags, |
aoqi@0 | 2949 | prot); |
aoqi@0 | 2950 | } else { |
aoqi@0 | 2951 | // get the next node to use from the used_node_list |
aoqi@0 | 2952 | assert(numa_node_list_holder.get_count() > 0, "Multiple NUMA nodes expected"); |
aoqi@0 | 2953 | DWORD node = numa_node_list_holder.get_node_list_entry(count % numa_node_list_holder.get_count()); |
aoqi@0 | 2954 | p_new = (char *)os::Kernel32Dll::VirtualAllocExNuma(hProc, |
aoqi@0 | 2955 | next_alloc_addr, |
aoqi@0 | 2956 | bytes_to_rq, |
aoqi@0 | 2957 | flags, |
aoqi@0 | 2958 | prot, |
aoqi@0 | 2959 | node); |
aoqi@0 | 2960 | } |
aoqi@0 | 2961 | } |
aoqi@0 | 2962 | |
aoqi@0 | 2963 | if (p_new == NULL) { |
aoqi@0 | 2964 | // Free any allocated pages |
aoqi@0 | 2965 | if (next_alloc_addr > p_buf) { |
aoqi@0 | 2966 | // Some memory was committed so release it. |
aoqi@0 | 2967 | size_t bytes_to_release = bytes - bytes_remaining; |
aoqi@0 | 2968 | // NMT has yet to record any individual blocks, so it |
aoqi@0 | 2969 | // need to create a dummy 'reserve' record to match |
aoqi@0 | 2970 | // the release. |
aoqi@0 | 2971 | MemTracker::record_virtual_memory_reserve((address)p_buf, |
aoqi@0 | 2972 | bytes_to_release, mtNone, CALLER_PC); |
aoqi@0 | 2973 | os::release_memory(p_buf, bytes_to_release); |
aoqi@0 | 2974 | } |
aoqi@0 | 2975 | #ifdef ASSERT |
aoqi@0 | 2976 | if (should_inject_error) { |
aoqi@0 | 2977 | if (TracePageSizes && Verbose) { |
aoqi@0 | 2978 | tty->print_cr("Reserving pages individually failed."); |
aoqi@0 | 2979 | } |
aoqi@0 | 2980 | } |
aoqi@0 | 2981 | #endif |
aoqi@0 | 2982 | return NULL; |
aoqi@0 | 2983 | } |
aoqi@0 | 2984 | |
aoqi@0 | 2985 | bytes_remaining -= bytes_to_rq; |
aoqi@0 | 2986 | next_alloc_addr += bytes_to_rq; |
aoqi@0 | 2987 | count++; |
aoqi@0 | 2988 | } |
aoqi@0 | 2989 | // Although the memory is allocated individually, it is returned as one. |
aoqi@0 | 2990 | // NMT records it as one block. |
aoqi@0 | 2991 | address pc = CALLER_PC; |
aoqi@0 | 2992 | if ((flags & MEM_COMMIT) != 0) { |
aoqi@0 | 2993 | MemTracker::record_virtual_memory_reserve_and_commit((address)p_buf, bytes, mtNone, pc); |
aoqi@0 | 2994 | } else { |
aoqi@0 | 2995 | MemTracker::record_virtual_memory_reserve((address)p_buf, bytes, mtNone, pc); |
aoqi@0 | 2996 | } |
aoqi@0 | 2997 | |
aoqi@0 | 2998 | // made it this far, success |
aoqi@0 | 2999 | return p_buf; |
aoqi@0 | 3000 | } |
aoqi@0 | 3001 | |
aoqi@0 | 3002 | |
aoqi@0 | 3003 | |
aoqi@0 | 3004 | void os::large_page_init() { |
aoqi@0 | 3005 | if (!UseLargePages) return; |
aoqi@0 | 3006 | |
aoqi@0 | 3007 | // print a warning if any large page related flag is specified on command line |
aoqi@0 | 3008 | bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || |
aoqi@0 | 3009 | !FLAG_IS_DEFAULT(LargePageSizeInBytes); |
aoqi@0 | 3010 | bool success = false; |
aoqi@0 | 3011 | |
aoqi@0 | 3012 | # define WARN(msg) if (warn_on_failure) { warning(msg); } |
aoqi@0 | 3013 | if (resolve_functions_for_large_page_init()) { |
aoqi@0 | 3014 | if (request_lock_memory_privilege()) { |
aoqi@0 | 3015 | size_t s = os::Kernel32Dll::GetLargePageMinimum(); |
aoqi@0 | 3016 | if (s) { |
aoqi@0 | 3017 | #if defined(IA32) || defined(AMD64) |
aoqi@0 | 3018 | if (s > 4*M || LargePageSizeInBytes > 4*M) { |
aoqi@0 | 3019 | WARN("JVM cannot use large pages bigger than 4mb."); |
aoqi@0 | 3020 | } else { |
aoqi@0 | 3021 | #endif |
aoqi@0 | 3022 | if (LargePageSizeInBytes && LargePageSizeInBytes % s == 0) { |
aoqi@0 | 3023 | _large_page_size = LargePageSizeInBytes; |
aoqi@0 | 3024 | } else { |
aoqi@0 | 3025 | _large_page_size = s; |
aoqi@0 | 3026 | } |
aoqi@0 | 3027 | success = true; |
aoqi@0 | 3028 | #if defined(IA32) || defined(AMD64) |
aoqi@0 | 3029 | } |
aoqi@0 | 3030 | #endif |
aoqi@0 | 3031 | } else { |
aoqi@0 | 3032 | WARN("Large page is not supported by the processor."); |
aoqi@0 | 3033 | } |
aoqi@0 | 3034 | } else { |
aoqi@0 | 3035 | WARN("JVM cannot use large page memory because it does not have enough privilege to lock pages in memory."); |
aoqi@0 | 3036 | } |
aoqi@0 | 3037 | } else { |
aoqi@0 | 3038 | WARN("Large page is not supported by the operating system."); |
aoqi@0 | 3039 | } |
aoqi@0 | 3040 | #undef WARN |
aoqi@0 | 3041 | |
aoqi@0 | 3042 | const size_t default_page_size = (size_t) vm_page_size(); |
aoqi@0 | 3043 | if (success && _large_page_size > default_page_size) { |
aoqi@0 | 3044 | _page_sizes[0] = _large_page_size; |
aoqi@0 | 3045 | _page_sizes[1] = default_page_size; |
aoqi@0 | 3046 | _page_sizes[2] = 0; |
aoqi@0 | 3047 | } |
aoqi@0 | 3048 | |
aoqi@0 | 3049 | cleanup_after_large_page_init(); |
aoqi@0 | 3050 | UseLargePages = success; |
aoqi@0 | 3051 | } |
aoqi@0 | 3052 | |
aoqi@0 | 3053 | // On win32, one cannot release just a part of reserved memory, it's an |
aoqi@0 | 3054 | // all or nothing deal. When we split a reservation, we must break the |
aoqi@0 | 3055 | // reservation into two reservations. |
aoqi@0 | 3056 | void os::pd_split_reserved_memory(char *base, size_t size, size_t split, |
aoqi@0 | 3057 | bool realloc) { |
aoqi@0 | 3058 | if (size > 0) { |
aoqi@0 | 3059 | release_memory(base, size); |
aoqi@0 | 3060 | if (realloc) { |
aoqi@0 | 3061 | reserve_memory(split, base); |
aoqi@0 | 3062 | } |
aoqi@0 | 3063 | if (size != split) { |
aoqi@0 | 3064 | reserve_memory(size - split, base + split); |
aoqi@0 | 3065 | } |
aoqi@0 | 3066 | } |
aoqi@0 | 3067 | } |
aoqi@0 | 3068 | |
aoqi@0 | 3069 | // Multiple threads can race in this code but it's not possible to unmap small sections of |
aoqi@0 | 3070 | // virtual space to get requested alignment, like posix-like os's. |
aoqi@0 | 3071 | // Windows prevents multiple thread from remapping over each other so this loop is thread-safe. |
aoqi@0 | 3072 | char* os::reserve_memory_aligned(size_t size, size_t alignment) { |
aoqi@0 | 3073 | assert((alignment & (os::vm_allocation_granularity() - 1)) == 0, |
aoqi@0 | 3074 | "Alignment must be a multiple of allocation granularity (page size)"); |
aoqi@0 | 3075 | assert((size & (alignment -1)) == 0, "size must be 'alignment' aligned"); |
aoqi@0 | 3076 | |
aoqi@0 | 3077 | size_t extra_size = size + alignment; |
aoqi@0 | 3078 | assert(extra_size >= size, "overflow, size is too large to allow alignment"); |
aoqi@0 | 3079 | |
aoqi@0 | 3080 | char* aligned_base = NULL; |
aoqi@0 | 3081 | |
aoqi@0 | 3082 | do { |
aoqi@0 | 3083 | char* extra_base = os::reserve_memory(extra_size, NULL, alignment); |
aoqi@0 | 3084 | if (extra_base == NULL) { |
aoqi@0 | 3085 | return NULL; |
aoqi@0 | 3086 | } |
aoqi@0 | 3087 | // Do manual alignment |
aoqi@0 | 3088 | aligned_base = (char*) align_size_up((uintptr_t) extra_base, alignment); |
aoqi@0 | 3089 | |
aoqi@0 | 3090 | os::release_memory(extra_base, extra_size); |
aoqi@0 | 3091 | |
aoqi@0 | 3092 | aligned_base = os::reserve_memory(size, aligned_base); |
aoqi@0 | 3093 | |
aoqi@0 | 3094 | } while (aligned_base == NULL); |
aoqi@0 | 3095 | |
aoqi@0 | 3096 | return aligned_base; |
aoqi@0 | 3097 | } |
aoqi@0 | 3098 | |
aoqi@0 | 3099 | char* os::pd_reserve_memory(size_t bytes, char* addr, size_t alignment_hint) { |
aoqi@0 | 3100 | assert((size_t)addr % os::vm_allocation_granularity() == 0, |
aoqi@0 | 3101 | "reserve alignment"); |
aoqi@0 | 3102 | assert(bytes % os::vm_allocation_granularity() == 0, "reserve block size"); |
aoqi@0 | 3103 | char* res; |
aoqi@0 | 3104 | // note that if UseLargePages is on, all the areas that require interleaving |
aoqi@0 | 3105 | // will go thru reserve_memory_special rather than thru here. |
aoqi@0 | 3106 | bool use_individual = (UseNUMAInterleaving && !UseLargePages); |
aoqi@0 | 3107 | if (!use_individual) { |
aoqi@0 | 3108 | res = (char*)VirtualAlloc(addr, bytes, MEM_RESERVE, PAGE_READWRITE); |
aoqi@0 | 3109 | } else { |
aoqi@0 | 3110 | elapsedTimer reserveTimer; |
aoqi@0 | 3111 | if( Verbose && PrintMiscellaneous ) reserveTimer.start(); |
aoqi@0 | 3112 | // in numa interleaving, we have to allocate pages individually |
aoqi@0 | 3113 | // (well really chunks of NUMAInterleaveGranularity size) |
aoqi@0 | 3114 | res = allocate_pages_individually(bytes, addr, MEM_RESERVE, PAGE_READWRITE); |
aoqi@0 | 3115 | if (res == NULL) { |
aoqi@0 | 3116 | warning("NUMA page allocation failed"); |
aoqi@0 | 3117 | } |
aoqi@0 | 3118 | if( Verbose && PrintMiscellaneous ) { |
aoqi@0 | 3119 | reserveTimer.stop(); |
aoqi@0 | 3120 | tty->print_cr("reserve_memory of %Ix bytes took " JLONG_FORMAT " ms (" JLONG_FORMAT " ticks)", bytes, |
aoqi@0 | 3121 | reserveTimer.milliseconds(), reserveTimer.ticks()); |
aoqi@0 | 3122 | } |
aoqi@0 | 3123 | } |
aoqi@0 | 3124 | assert(res == NULL || addr == NULL || addr == res, |
aoqi@0 | 3125 | "Unexpected address from reserve."); |
aoqi@0 | 3126 | |
aoqi@0 | 3127 | return res; |
aoqi@0 | 3128 | } |
aoqi@0 | 3129 | |
aoqi@0 | 3130 | // Reserve memory at an arbitrary address, only if that area is |
aoqi@0 | 3131 | // available (and not reserved for something else). |
aoqi@0 | 3132 | char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) { |
aoqi@0 | 3133 | // Windows os::reserve_memory() fails of the requested address range is |
aoqi@0 | 3134 | // not avilable. |
aoqi@0 | 3135 | return reserve_memory(bytes, requested_addr); |
aoqi@0 | 3136 | } |
aoqi@0 | 3137 | |
aoqi@0 | 3138 | size_t os::large_page_size() { |
aoqi@0 | 3139 | return _large_page_size; |
aoqi@0 | 3140 | } |
aoqi@0 | 3141 | |
aoqi@0 | 3142 | bool os::can_commit_large_page_memory() { |
aoqi@0 | 3143 | // Windows only uses large page memory when the entire region is reserved |
aoqi@0 | 3144 | // and committed in a single VirtualAlloc() call. This may change in the |
aoqi@0 | 3145 | // future, but with Windows 2003 it's not possible to commit on demand. |
aoqi@0 | 3146 | return false; |
aoqi@0 | 3147 | } |
aoqi@0 | 3148 | |
aoqi@0 | 3149 | bool os::can_execute_large_page_memory() { |
aoqi@0 | 3150 | return true; |
aoqi@0 | 3151 | } |
aoqi@0 | 3152 | |
aoqi@0 | 3153 | char* os::reserve_memory_special(size_t bytes, size_t alignment, char* addr, bool exec) { |
aoqi@0 | 3154 | assert(UseLargePages, "only for large pages"); |
aoqi@0 | 3155 | |
aoqi@0 | 3156 | if (!is_size_aligned(bytes, os::large_page_size()) || alignment > os::large_page_size()) { |
aoqi@0 | 3157 | return NULL; // Fallback to small pages. |
aoqi@0 | 3158 | } |
aoqi@0 | 3159 | |
aoqi@0 | 3160 | const DWORD prot = exec ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE; |
aoqi@0 | 3161 | const DWORD flags = MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES; |
aoqi@0 | 3162 | |
aoqi@0 | 3163 | // with large pages, there are two cases where we need to use Individual Allocation |
aoqi@0 | 3164 | // 1) the UseLargePagesIndividualAllocation flag is set (set by default on WS2003) |
aoqi@0 | 3165 | // 2) NUMA Interleaving is enabled, in which case we use a different node for each page |
aoqi@0 | 3166 | if (UseLargePagesIndividualAllocation || UseNUMAInterleaving) { |
aoqi@0 | 3167 | if (TracePageSizes && Verbose) { |
aoqi@0 | 3168 | tty->print_cr("Reserving large pages individually."); |
aoqi@0 | 3169 | } |
aoqi@0 | 3170 | char * p_buf = allocate_pages_individually(bytes, addr, flags, prot, LargePagesIndividualAllocationInjectError); |
aoqi@0 | 3171 | if (p_buf == NULL) { |
aoqi@0 | 3172 | // give an appropriate warning message |
aoqi@0 | 3173 | if (UseNUMAInterleaving) { |
aoqi@0 | 3174 | warning("NUMA large page allocation failed, UseLargePages flag ignored"); |
aoqi@0 | 3175 | } |
aoqi@0 | 3176 | if (UseLargePagesIndividualAllocation) { |
aoqi@0 | 3177 | warning("Individually allocated large pages failed, " |
aoqi@0 | 3178 | "use -XX:-UseLargePagesIndividualAllocation to turn off"); |
aoqi@0 | 3179 | } |
aoqi@0 | 3180 | return NULL; |
aoqi@0 | 3181 | } |
aoqi@0 | 3182 | |
aoqi@0 | 3183 | return p_buf; |
aoqi@0 | 3184 | |
aoqi@0 | 3185 | } else { |
aoqi@0 | 3186 | if (TracePageSizes && Verbose) { |
aoqi@0 | 3187 | tty->print_cr("Reserving large pages in a single large chunk."); |
aoqi@0 | 3188 | } |
aoqi@0 | 3189 | // normal policy just allocate it all at once |
aoqi@0 | 3190 | DWORD flag = MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES; |
aoqi@0 | 3191 | char * res = (char *)VirtualAlloc(addr, bytes, flag, prot); |
aoqi@0 | 3192 | if (res != NULL) { |
aoqi@0 | 3193 | address pc = CALLER_PC; |
aoqi@0 | 3194 | MemTracker::record_virtual_memory_reserve_and_commit((address)res, bytes, mtNone, pc); |
aoqi@0 | 3195 | } |
aoqi@0 | 3196 | |
aoqi@0 | 3197 | return res; |
aoqi@0 | 3198 | } |
aoqi@0 | 3199 | } |
aoqi@0 | 3200 | |
aoqi@0 | 3201 | bool os::release_memory_special(char* base, size_t bytes) { |
aoqi@0 | 3202 | assert(base != NULL, "Sanity check"); |
aoqi@0 | 3203 | return release_memory(base, bytes); |
aoqi@0 | 3204 | } |
aoqi@0 | 3205 | |
aoqi@0 | 3206 | void os::print_statistics() { |
aoqi@0 | 3207 | } |
aoqi@0 | 3208 | |
aoqi@0 | 3209 | static void warn_fail_commit_memory(char* addr, size_t bytes, bool exec) { |
aoqi@0 | 3210 | int err = os::get_last_error(); |
aoqi@0 | 3211 | char buf[256]; |
aoqi@0 | 3212 | size_t buf_len = os::lasterror(buf, sizeof(buf)); |
aoqi@0 | 3213 | warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
aoqi@0 | 3214 | ", %d) failed; error='%s' (DOS error/errno=%d)", addr, bytes, |
aoqi@0 | 3215 | exec, buf_len != 0 ? buf : "<no_error_string>", err); |
aoqi@0 | 3216 | } |
aoqi@0 | 3217 | |
aoqi@0 | 3218 | bool os::pd_commit_memory(char* addr, size_t bytes, bool exec) { |
aoqi@0 | 3219 | if (bytes == 0) { |
aoqi@0 | 3220 | // Don't bother the OS with noops. |
aoqi@0 | 3221 | return true; |
aoqi@0 | 3222 | } |
aoqi@0 | 3223 | assert((size_t) addr % os::vm_page_size() == 0, "commit on page boundaries"); |
aoqi@0 | 3224 | assert(bytes % os::vm_page_size() == 0, "commit in page-sized chunks"); |
aoqi@0 | 3225 | // Don't attempt to print anything if the OS call fails. We're |
aoqi@0 | 3226 | // probably low on resources, so the print itself may cause crashes. |
aoqi@0 | 3227 | |
aoqi@0 | 3228 | // unless we have NUMAInterleaving enabled, the range of a commit |
aoqi@0 | 3229 | // is always within a reserve covered by a single VirtualAlloc |
aoqi@0 | 3230 | // in that case we can just do a single commit for the requested size |
aoqi@0 | 3231 | if (!UseNUMAInterleaving) { |
aoqi@0 | 3232 | if (VirtualAlloc(addr, bytes, MEM_COMMIT, PAGE_READWRITE) == NULL) { |
aoqi@0 | 3233 | NOT_PRODUCT(warn_fail_commit_memory(addr, bytes, exec);) |
aoqi@0 | 3234 | return false; |
aoqi@0 | 3235 | } |
aoqi@0 | 3236 | if (exec) { |
aoqi@0 | 3237 | DWORD oldprot; |
aoqi@0 | 3238 | // Windows doc says to use VirtualProtect to get execute permissions |
aoqi@0 | 3239 | if (!VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE, &oldprot)) { |
aoqi@0 | 3240 | NOT_PRODUCT(warn_fail_commit_memory(addr, bytes, exec);) |
aoqi@0 | 3241 | return false; |
aoqi@0 | 3242 | } |
aoqi@0 | 3243 | } |
aoqi@0 | 3244 | return true; |
aoqi@0 | 3245 | } else { |
aoqi@0 | 3246 | |
aoqi@0 | 3247 | // when NUMAInterleaving is enabled, the commit might cover a range that |
aoqi@0 | 3248 | // came from multiple VirtualAlloc reserves (using allocate_pages_individually). |
aoqi@0 | 3249 | // VirtualQuery can help us determine that. The RegionSize that VirtualQuery |
aoqi@0 | 3250 | // returns represents the number of bytes that can be committed in one step. |
aoqi@0 | 3251 | size_t bytes_remaining = bytes; |
aoqi@0 | 3252 | char * next_alloc_addr = addr; |
aoqi@0 | 3253 | while (bytes_remaining > 0) { |
aoqi@0 | 3254 | MEMORY_BASIC_INFORMATION alloc_info; |
aoqi@0 | 3255 | VirtualQuery(next_alloc_addr, &alloc_info, sizeof(alloc_info)); |
aoqi@0 | 3256 | size_t bytes_to_rq = MIN2(bytes_remaining, (size_t)alloc_info.RegionSize); |
aoqi@0 | 3257 | if (VirtualAlloc(next_alloc_addr, bytes_to_rq, MEM_COMMIT, |
aoqi@0 | 3258 | PAGE_READWRITE) == NULL) { |
aoqi@0 | 3259 | NOT_PRODUCT(warn_fail_commit_memory(next_alloc_addr, bytes_to_rq, |
aoqi@0 | 3260 | exec);) |
aoqi@0 | 3261 | return false; |
aoqi@0 | 3262 | } |
aoqi@0 | 3263 | if (exec) { |
aoqi@0 | 3264 | DWORD oldprot; |
aoqi@0 | 3265 | if (!VirtualProtect(next_alloc_addr, bytes_to_rq, |
aoqi@0 | 3266 | PAGE_EXECUTE_READWRITE, &oldprot)) { |
aoqi@0 | 3267 | NOT_PRODUCT(warn_fail_commit_memory(next_alloc_addr, bytes_to_rq, |
aoqi@0 | 3268 | exec);) |
aoqi@0 | 3269 | return false; |
aoqi@0 | 3270 | } |
aoqi@0 | 3271 | } |
aoqi@0 | 3272 | bytes_remaining -= bytes_to_rq; |
aoqi@0 | 3273 | next_alloc_addr += bytes_to_rq; |
aoqi@0 | 3274 | } |
aoqi@0 | 3275 | } |
aoqi@0 | 3276 | // if we made it this far, return true |
aoqi@0 | 3277 | return true; |
aoqi@0 | 3278 | } |
aoqi@0 | 3279 | |
aoqi@0 | 3280 | bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint, |
aoqi@0 | 3281 | bool exec) { |
aoqi@0 | 3282 | // alignment_hint is ignored on this OS |
aoqi@0 | 3283 | return pd_commit_memory(addr, size, exec); |
aoqi@0 | 3284 | } |
aoqi@0 | 3285 | |
aoqi@0 | 3286 | void os::pd_commit_memory_or_exit(char* addr, size_t size, bool exec, |
aoqi@0 | 3287 | const char* mesg) { |
aoqi@0 | 3288 | assert(mesg != NULL, "mesg must be specified"); |
aoqi@0 | 3289 | if (!pd_commit_memory(addr, size, exec)) { |
aoqi@0 | 3290 | warn_fail_commit_memory(addr, size, exec); |
aoqi@0 | 3291 | vm_exit_out_of_memory(size, OOM_MMAP_ERROR, mesg); |
aoqi@0 | 3292 | } |
aoqi@0 | 3293 | } |
aoqi@0 | 3294 | |
aoqi@0 | 3295 | void os::pd_commit_memory_or_exit(char* addr, size_t size, |
aoqi@0 | 3296 | size_t alignment_hint, bool exec, |
aoqi@0 | 3297 | const char* mesg) { |
aoqi@0 | 3298 | // alignment_hint is ignored on this OS |
aoqi@0 | 3299 | pd_commit_memory_or_exit(addr, size, exec, mesg); |
aoqi@0 | 3300 | } |
aoqi@0 | 3301 | |
aoqi@0 | 3302 | bool os::pd_uncommit_memory(char* addr, size_t bytes) { |
aoqi@0 | 3303 | if (bytes == 0) { |
aoqi@0 | 3304 | // Don't bother the OS with noops. |
aoqi@0 | 3305 | return true; |
aoqi@0 | 3306 | } |
aoqi@0 | 3307 | assert((size_t) addr % os::vm_page_size() == 0, "uncommit on page boundaries"); |
aoqi@0 | 3308 | assert(bytes % os::vm_page_size() == 0, "uncommit in page-sized chunks"); |
aoqi@0 | 3309 | return (VirtualFree(addr, bytes, MEM_DECOMMIT) != 0); |
aoqi@0 | 3310 | } |
aoqi@0 | 3311 | |
aoqi@0 | 3312 | bool os::pd_release_memory(char* addr, size_t bytes) { |
aoqi@0 | 3313 | return VirtualFree(addr, 0, MEM_RELEASE) != 0; |
aoqi@0 | 3314 | } |
aoqi@0 | 3315 | |
aoqi@0 | 3316 | bool os::pd_create_stack_guard_pages(char* addr, size_t size) { |
aoqi@0 | 3317 | return os::commit_memory(addr, size, !ExecMem); |
aoqi@0 | 3318 | } |
aoqi@0 | 3319 | |
aoqi@0 | 3320 | bool os::remove_stack_guard_pages(char* addr, size_t size) { |
aoqi@0 | 3321 | return os::uncommit_memory(addr, size); |
aoqi@0 | 3322 | } |
aoqi@0 | 3323 | |
aoqi@0 | 3324 | // Set protections specified |
aoqi@0 | 3325 | bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
aoqi@0 | 3326 | bool is_committed) { |
aoqi@0 | 3327 | unsigned int p = 0; |
aoqi@0 | 3328 | switch (prot) { |
aoqi@0 | 3329 | case MEM_PROT_NONE: p = PAGE_NOACCESS; break; |
aoqi@0 | 3330 | case MEM_PROT_READ: p = PAGE_READONLY; break; |
aoqi@0 | 3331 | case MEM_PROT_RW: p = PAGE_READWRITE; break; |
aoqi@0 | 3332 | case MEM_PROT_RWX: p = PAGE_EXECUTE_READWRITE; break; |
aoqi@0 | 3333 | default: |
aoqi@0 | 3334 | ShouldNotReachHere(); |
aoqi@0 | 3335 | } |
aoqi@0 | 3336 | |
aoqi@0 | 3337 | DWORD old_status; |
aoqi@0 | 3338 | |
aoqi@0 | 3339 | // Strange enough, but on Win32 one can change protection only for committed |
aoqi@0 | 3340 | // memory, not a big deal anyway, as bytes less or equal than 64K |
aoqi@0 | 3341 | if (!is_committed) { |
aoqi@0 | 3342 | commit_memory_or_exit(addr, bytes, prot == MEM_PROT_RWX, |
aoqi@0 | 3343 | "cannot commit protection page"); |
aoqi@0 | 3344 | } |
aoqi@0 | 3345 | // One cannot use os::guard_memory() here, as on Win32 guard page |
aoqi@0 | 3346 | // have different (one-shot) semantics, from MSDN on PAGE_GUARD: |
aoqi@0 | 3347 | // |
aoqi@0 | 3348 | // Pages in the region become guard pages. Any attempt to access a guard page |
aoqi@0 | 3349 | // causes the system to raise a STATUS_GUARD_PAGE exception and turn off |
aoqi@0 | 3350 | // the guard page status. Guard pages thus act as a one-time access alarm. |
aoqi@0 | 3351 | return VirtualProtect(addr, bytes, p, &old_status) != 0; |
aoqi@0 | 3352 | } |
aoqi@0 | 3353 | |
aoqi@0 | 3354 | bool os::guard_memory(char* addr, size_t bytes) { |
aoqi@0 | 3355 | DWORD old_status; |
aoqi@0 | 3356 | return VirtualProtect(addr, bytes, PAGE_READWRITE | PAGE_GUARD, &old_status) != 0; |
aoqi@0 | 3357 | } |
aoqi@0 | 3358 | |
aoqi@0 | 3359 | bool os::unguard_memory(char* addr, size_t bytes) { |
aoqi@0 | 3360 | DWORD old_status; |
aoqi@0 | 3361 | return VirtualProtect(addr, bytes, PAGE_READWRITE, &old_status) != 0; |
aoqi@0 | 3362 | } |
aoqi@0 | 3363 | |
aoqi@0 | 3364 | void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) { } |
aoqi@0 | 3365 | void os::pd_free_memory(char *addr, size_t bytes, size_t alignment_hint) { } |
aoqi@0 | 3366 | void os::numa_make_global(char *addr, size_t bytes) { } |
aoqi@0 | 3367 | void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { } |
aoqi@0 | 3368 | bool os::numa_topology_changed() { return false; } |
aoqi@0 | 3369 | size_t os::numa_get_groups_num() { return MAX2(numa_node_list_holder.get_count(), 1); } |
aoqi@0 | 3370 | int os::numa_get_group_id() { return 0; } |
aoqi@0 | 3371 | size_t os::numa_get_leaf_groups(int *ids, size_t size) { |
aoqi@0 | 3372 | if (numa_node_list_holder.get_count() == 0 && size > 0) { |
aoqi@0 | 3373 | // Provide an answer for UMA systems |
aoqi@0 | 3374 | ids[0] = 0; |
aoqi@0 | 3375 | return 1; |
aoqi@0 | 3376 | } else { |
aoqi@0 | 3377 | // check for size bigger than actual groups_num |
aoqi@0 | 3378 | size = MIN2(size, numa_get_groups_num()); |
aoqi@0 | 3379 | for (int i = 0; i < (int)size; i++) { |
aoqi@0 | 3380 | ids[i] = numa_node_list_holder.get_node_list_entry(i); |
aoqi@0 | 3381 | } |
aoqi@0 | 3382 | return size; |
aoqi@0 | 3383 | } |
aoqi@0 | 3384 | } |
aoqi@0 | 3385 | |
aoqi@0 | 3386 | bool os::get_page_info(char *start, page_info* info) { |
aoqi@0 | 3387 | return false; |
aoqi@0 | 3388 | } |
aoqi@0 | 3389 | |
aoqi@0 | 3390 | char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { |
aoqi@0 | 3391 | return end; |
aoqi@0 | 3392 | } |
aoqi@0 | 3393 | |
aoqi@0 | 3394 | char* os::non_memory_address_word() { |
aoqi@0 | 3395 | // Must never look like an address returned by reserve_memory, |
aoqi@0 | 3396 | // even in its subfields (as defined by the CPU immediate fields, |
aoqi@0 | 3397 | // if the CPU splits constants across multiple instructions). |
aoqi@0 | 3398 | return (char*)-1; |
aoqi@0 | 3399 | } |
aoqi@0 | 3400 | |
aoqi@0 | 3401 | #define MAX_ERROR_COUNT 100 |
aoqi@0 | 3402 | #define SYS_THREAD_ERROR 0xffffffffUL |
aoqi@0 | 3403 | |
aoqi@0 | 3404 | void os::pd_start_thread(Thread* thread) { |
aoqi@0 | 3405 | DWORD ret = ResumeThread(thread->osthread()->thread_handle()); |
aoqi@0 | 3406 | // Returns previous suspend state: |
aoqi@0 | 3407 | // 0: Thread was not suspended |
aoqi@0 | 3408 | // 1: Thread is running now |
aoqi@0 | 3409 | // >1: Thread is still suspended. |
aoqi@0 | 3410 | assert(ret != SYS_THREAD_ERROR, "StartThread failed"); // should propagate back |
aoqi@0 | 3411 | } |
aoqi@0 | 3412 | |
aoqi@0 | 3413 | class HighResolutionInterval : public CHeapObj<mtThread> { |
aoqi@0 | 3414 | // The default timer resolution seems to be 10 milliseconds. |
aoqi@0 | 3415 | // (Where is this written down?) |
aoqi@0 | 3416 | // If someone wants to sleep for only a fraction of the default, |
aoqi@0 | 3417 | // then we set the timer resolution down to 1 millisecond for |
aoqi@0 | 3418 | // the duration of their interval. |
aoqi@0 | 3419 | // We carefully set the resolution back, since otherwise we |
aoqi@0 | 3420 | // seem to incur an overhead (3%?) that we don't need. |
aoqi@0 | 3421 | // CONSIDER: if ms is small, say 3, then we should run with a high resolution time. |
aoqi@0 | 3422 | // Buf if ms is large, say 500, or 503, we should avoid the call to timeBeginPeriod(). |
aoqi@0 | 3423 | // Alternatively, we could compute the relative error (503/500 = .6%) and only use |
aoqi@0 | 3424 | // timeBeginPeriod() if the relative error exceeded some threshold. |
aoqi@0 | 3425 | // timeBeginPeriod() has been linked to problems with clock drift on win32 systems and |
aoqi@0 | 3426 | // to decreased efficiency related to increased timer "tick" rates. We want to minimize |
aoqi@0 | 3427 | // (a) calls to timeBeginPeriod() and timeEndPeriod() and (b) time spent with high |
aoqi@0 | 3428 | // resolution timers running. |
aoqi@0 | 3429 | private: |
aoqi@0 | 3430 | jlong resolution; |
aoqi@0 | 3431 | public: |
aoqi@0 | 3432 | HighResolutionInterval(jlong ms) { |
aoqi@0 | 3433 | resolution = ms % 10L; |
aoqi@0 | 3434 | if (resolution != 0) { |
aoqi@0 | 3435 | MMRESULT result = timeBeginPeriod(1L); |
aoqi@0 | 3436 | } |
aoqi@0 | 3437 | } |
aoqi@0 | 3438 | ~HighResolutionInterval() { |
aoqi@0 | 3439 | if (resolution != 0) { |
aoqi@0 | 3440 | MMRESULT result = timeEndPeriod(1L); |
aoqi@0 | 3441 | } |
aoqi@0 | 3442 | resolution = 0L; |
aoqi@0 | 3443 | } |
aoqi@0 | 3444 | }; |
aoqi@0 | 3445 | |
aoqi@0 | 3446 | int os::sleep(Thread* thread, jlong ms, bool interruptable) { |
aoqi@0 | 3447 | jlong limit = (jlong) MAXDWORD; |
aoqi@0 | 3448 | |
aoqi@0 | 3449 | while(ms > limit) { |
aoqi@0 | 3450 | int res; |
aoqi@0 | 3451 | if ((res = sleep(thread, limit, interruptable)) != OS_TIMEOUT) |
aoqi@0 | 3452 | return res; |
aoqi@0 | 3453 | ms -= limit; |
aoqi@0 | 3454 | } |
aoqi@0 | 3455 | |
aoqi@0 | 3456 | assert(thread == Thread::current(), "thread consistency check"); |
aoqi@0 | 3457 | OSThread* osthread = thread->osthread(); |
aoqi@0 | 3458 | OSThreadWaitState osts(osthread, false /* not Object.wait() */); |
aoqi@0 | 3459 | int result; |
aoqi@0 | 3460 | if (interruptable) { |
aoqi@0 | 3461 | assert(thread->is_Java_thread(), "must be java thread"); |
aoqi@0 | 3462 | JavaThread *jt = (JavaThread *) thread; |
aoqi@0 | 3463 | ThreadBlockInVM tbivm(jt); |
aoqi@0 | 3464 | |
aoqi@0 | 3465 | jt->set_suspend_equivalent(); |
aoqi@0 | 3466 | // cleared by handle_special_suspend_equivalent_condition() or |
aoqi@0 | 3467 | // java_suspend_self() via check_and_wait_while_suspended() |
aoqi@0 | 3468 | |
aoqi@0 | 3469 | HANDLE events[1]; |
aoqi@0 | 3470 | events[0] = osthread->interrupt_event(); |
aoqi@0 | 3471 | HighResolutionInterval *phri=NULL; |
aoqi@0 | 3472 | if(!ForceTimeHighResolution) |
aoqi@0 | 3473 | phri = new HighResolutionInterval( ms ); |
aoqi@0 | 3474 | if (WaitForMultipleObjects(1, events, FALSE, (DWORD)ms) == WAIT_TIMEOUT) { |
aoqi@0 | 3475 | result = OS_TIMEOUT; |
aoqi@0 | 3476 | } else { |
aoqi@0 | 3477 | ResetEvent(osthread->interrupt_event()); |
aoqi@0 | 3478 | osthread->set_interrupted(false); |
aoqi@0 | 3479 | result = OS_INTRPT; |
aoqi@0 | 3480 | } |
aoqi@0 | 3481 | delete phri; //if it is NULL, harmless |
aoqi@0 | 3482 | |
aoqi@0 | 3483 | // were we externally suspended while we were waiting? |
aoqi@0 | 3484 | jt->check_and_wait_while_suspended(); |
aoqi@0 | 3485 | } else { |
aoqi@0 | 3486 | assert(!thread->is_Java_thread(), "must not be java thread"); |
aoqi@0 | 3487 | Sleep((long) ms); |
aoqi@0 | 3488 | result = OS_TIMEOUT; |
aoqi@0 | 3489 | } |
aoqi@0 | 3490 | return result; |
aoqi@0 | 3491 | } |
aoqi@0 | 3492 | |
aoqi@0 | 3493 | // |
aoqi@0 | 3494 | // Short sleep, direct OS call. |
aoqi@0 | 3495 | // |
aoqi@0 | 3496 | // ms = 0, means allow others (if any) to run. |
aoqi@0 | 3497 | // |
aoqi@0 | 3498 | void os::naked_short_sleep(jlong ms) { |
aoqi@0 | 3499 | assert(ms < 1000, "Un-interruptable sleep, short time use only"); |
aoqi@0 | 3500 | Sleep(ms); |
aoqi@0 | 3501 | } |
aoqi@0 | 3502 | |
aoqi@0 | 3503 | // Sleep forever; naked call to OS-specific sleep; use with CAUTION |
aoqi@0 | 3504 | void os::infinite_sleep() { |
aoqi@0 | 3505 | while (true) { // sleep forever ... |
aoqi@0 | 3506 | Sleep(100000); // ... 100 seconds at a time |
aoqi@0 | 3507 | } |
aoqi@0 | 3508 | } |
aoqi@0 | 3509 | |
aoqi@0 | 3510 | typedef BOOL (WINAPI * STTSignature)(void) ; |
aoqi@0 | 3511 | |
aoqi@0 | 3512 | os::YieldResult os::NakedYield() { |
aoqi@0 | 3513 | // Use either SwitchToThread() or Sleep(0) |
aoqi@0 | 3514 | // Consider passing back the return value from SwitchToThread(). |
aoqi@0 | 3515 | if (os::Kernel32Dll::SwitchToThreadAvailable()) { |
aoqi@0 | 3516 | return SwitchToThread() ? os::YIELD_SWITCHED : os::YIELD_NONEREADY ; |
aoqi@0 | 3517 | } else { |
aoqi@0 | 3518 | Sleep(0); |
aoqi@0 | 3519 | } |
aoqi@0 | 3520 | return os::YIELD_UNKNOWN ; |
aoqi@0 | 3521 | } |
aoqi@0 | 3522 | |
aoqi@0 | 3523 | void os::yield() { os::NakedYield(); } |
aoqi@0 | 3524 | |
aoqi@0 | 3525 | void os::yield_all(int attempts) { |
aoqi@0 | 3526 | // Yields to all threads, including threads with lower priorities |
aoqi@0 | 3527 | Sleep(1); |
aoqi@0 | 3528 | } |
aoqi@0 | 3529 | |
aoqi@0 | 3530 | // Win32 only gives you access to seven real priorities at a time, |
aoqi@0 | 3531 | // so we compress Java's ten down to seven. It would be better |
aoqi@0 | 3532 | // if we dynamically adjusted relative priorities. |
aoqi@0 | 3533 | |
aoqi@0 | 3534 | int os::java_to_os_priority[CriticalPriority + 1] = { |
aoqi@0 | 3535 | THREAD_PRIORITY_IDLE, // 0 Entry should never be used |
aoqi@0 | 3536 | THREAD_PRIORITY_LOWEST, // 1 MinPriority |
aoqi@0 | 3537 | THREAD_PRIORITY_LOWEST, // 2 |
aoqi@0 | 3538 | THREAD_PRIORITY_BELOW_NORMAL, // 3 |
aoqi@0 | 3539 | THREAD_PRIORITY_BELOW_NORMAL, // 4 |
aoqi@0 | 3540 | THREAD_PRIORITY_NORMAL, // 5 NormPriority |
aoqi@0 | 3541 | THREAD_PRIORITY_NORMAL, // 6 |
aoqi@0 | 3542 | THREAD_PRIORITY_ABOVE_NORMAL, // 7 |
aoqi@0 | 3543 | THREAD_PRIORITY_ABOVE_NORMAL, // 8 |
aoqi@0 | 3544 | THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority |
aoqi@0 | 3545 | THREAD_PRIORITY_HIGHEST, // 10 MaxPriority |
aoqi@0 | 3546 | THREAD_PRIORITY_HIGHEST // 11 CriticalPriority |
aoqi@0 | 3547 | }; |
aoqi@0 | 3548 | |
aoqi@0 | 3549 | int prio_policy1[CriticalPriority + 1] = { |
aoqi@0 | 3550 | THREAD_PRIORITY_IDLE, // 0 Entry should never be used |
aoqi@0 | 3551 | THREAD_PRIORITY_LOWEST, // 1 MinPriority |
aoqi@0 | 3552 | THREAD_PRIORITY_LOWEST, // 2 |
aoqi@0 | 3553 | THREAD_PRIORITY_BELOW_NORMAL, // 3 |
aoqi@0 | 3554 | THREAD_PRIORITY_BELOW_NORMAL, // 4 |
aoqi@0 | 3555 | THREAD_PRIORITY_NORMAL, // 5 NormPriority |
aoqi@0 | 3556 | THREAD_PRIORITY_ABOVE_NORMAL, // 6 |
aoqi@0 | 3557 | THREAD_PRIORITY_ABOVE_NORMAL, // 7 |
aoqi@0 | 3558 | THREAD_PRIORITY_HIGHEST, // 8 |
aoqi@0 | 3559 | THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority |
aoqi@0 | 3560 | THREAD_PRIORITY_TIME_CRITICAL, // 10 MaxPriority |
aoqi@0 | 3561 | THREAD_PRIORITY_TIME_CRITICAL // 11 CriticalPriority |
aoqi@0 | 3562 | }; |
aoqi@0 | 3563 | |
aoqi@0 | 3564 | static int prio_init() { |
aoqi@0 | 3565 | // If ThreadPriorityPolicy is 1, switch tables |
aoqi@0 | 3566 | if (ThreadPriorityPolicy == 1) { |
aoqi@0 | 3567 | int i; |
aoqi@0 | 3568 | for (i = 0; i < CriticalPriority + 1; i++) { |
aoqi@0 | 3569 | os::java_to_os_priority[i] = prio_policy1[i]; |
aoqi@0 | 3570 | } |
aoqi@0 | 3571 | } |
aoqi@0 | 3572 | if (UseCriticalJavaThreadPriority) { |
aoqi@0 | 3573 | os::java_to_os_priority[MaxPriority] = os::java_to_os_priority[CriticalPriority] ; |
aoqi@0 | 3574 | } |
aoqi@0 | 3575 | return 0; |
aoqi@0 | 3576 | } |
aoqi@0 | 3577 | |
aoqi@0 | 3578 | OSReturn os::set_native_priority(Thread* thread, int priority) { |
aoqi@0 | 3579 | if (!UseThreadPriorities) return OS_OK; |
aoqi@0 | 3580 | bool ret = SetThreadPriority(thread->osthread()->thread_handle(), priority) != 0; |
aoqi@0 | 3581 | return ret ? OS_OK : OS_ERR; |
aoqi@0 | 3582 | } |
aoqi@0 | 3583 | |
aoqi@0 | 3584 | OSReturn os::get_native_priority(const Thread* const thread, int* priority_ptr) { |
aoqi@0 | 3585 | if ( !UseThreadPriorities ) { |
aoqi@0 | 3586 | *priority_ptr = java_to_os_priority[NormPriority]; |
aoqi@0 | 3587 | return OS_OK; |
aoqi@0 | 3588 | } |
aoqi@0 | 3589 | int os_prio = GetThreadPriority(thread->osthread()->thread_handle()); |
aoqi@0 | 3590 | if (os_prio == THREAD_PRIORITY_ERROR_RETURN) { |
aoqi@0 | 3591 | assert(false, "GetThreadPriority failed"); |
aoqi@0 | 3592 | return OS_ERR; |
aoqi@0 | 3593 | } |
aoqi@0 | 3594 | *priority_ptr = os_prio; |
aoqi@0 | 3595 | return OS_OK; |
aoqi@0 | 3596 | } |
aoqi@0 | 3597 | |
aoqi@0 | 3598 | |
aoqi@0 | 3599 | // Hint to the underlying OS that a task switch would not be good. |
aoqi@0 | 3600 | // Void return because it's a hint and can fail. |
aoqi@0 | 3601 | void os::hint_no_preempt() {} |
aoqi@0 | 3602 | |
aoqi@0 | 3603 | void os::interrupt(Thread* thread) { |
aoqi@0 | 3604 | assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), |
aoqi@0 | 3605 | "possibility of dangling Thread pointer"); |
aoqi@0 | 3606 | |
aoqi@0 | 3607 | OSThread* osthread = thread->osthread(); |
aoqi@0 | 3608 | osthread->set_interrupted(true); |
aoqi@0 | 3609 | // More than one thread can get here with the same value of osthread, |
aoqi@0 | 3610 | // resulting in multiple notifications. We do, however, want the store |
aoqi@0 | 3611 | // to interrupted() to be visible to other threads before we post |
aoqi@0 | 3612 | // the interrupt event. |
aoqi@0 | 3613 | OrderAccess::release(); |
aoqi@0 | 3614 | SetEvent(osthread->interrupt_event()); |
aoqi@0 | 3615 | // For JSR166: unpark after setting status |
aoqi@0 | 3616 | if (thread->is_Java_thread()) |
aoqi@0 | 3617 | ((JavaThread*)thread)->parker()->unpark(); |
aoqi@0 | 3618 | |
aoqi@0 | 3619 | ParkEvent * ev = thread->_ParkEvent ; |
aoqi@0 | 3620 | if (ev != NULL) ev->unpark() ; |
aoqi@0 | 3621 | |
aoqi@0 | 3622 | } |
aoqi@0 | 3623 | |
aoqi@0 | 3624 | |
aoqi@0 | 3625 | bool os::is_interrupted(Thread* thread, bool clear_interrupted) { |
aoqi@0 | 3626 | assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), |
aoqi@0 | 3627 | "possibility of dangling Thread pointer"); |
aoqi@0 | 3628 | |
aoqi@0 | 3629 | OSThread* osthread = thread->osthread(); |
aoqi@0 | 3630 | // There is no synchronization between the setting of the interrupt |
aoqi@0 | 3631 | // and it being cleared here. It is critical - see 6535709 - that |
aoqi@0 | 3632 | // we only clear the interrupt state, and reset the interrupt event, |
aoqi@0 | 3633 | // if we are going to report that we were indeed interrupted - else |
aoqi@0 | 3634 | // an interrupt can be "lost", leading to spurious wakeups or lost wakeups |
aoqi@0 | 3635 | // depending on the timing. By checking thread interrupt event to see |
aoqi@0 | 3636 | // if the thread gets real interrupt thus prevent spurious wakeup. |
aoqi@0 | 3637 | bool interrupted = osthread->interrupted() && (WaitForSingleObject(osthread->interrupt_event(), 0) == WAIT_OBJECT_0); |
aoqi@0 | 3638 | if (interrupted && clear_interrupted) { |
aoqi@0 | 3639 | osthread->set_interrupted(false); |
aoqi@0 | 3640 | ResetEvent(osthread->interrupt_event()); |
aoqi@0 | 3641 | } // Otherwise leave the interrupted state alone |
aoqi@0 | 3642 | |
aoqi@0 | 3643 | return interrupted; |
aoqi@0 | 3644 | } |
aoqi@0 | 3645 | |
aoqi@0 | 3646 | // Get's a pc (hint) for a running thread. Currently used only for profiling. |
aoqi@0 | 3647 | ExtendedPC os::get_thread_pc(Thread* thread) { |
aoqi@0 | 3648 | CONTEXT context; |
aoqi@0 | 3649 | context.ContextFlags = CONTEXT_CONTROL; |
aoqi@0 | 3650 | HANDLE handle = thread->osthread()->thread_handle(); |
aoqi@0 | 3651 | #ifdef _M_IA64 |
aoqi@0 | 3652 | assert(0, "Fix get_thread_pc"); |
aoqi@0 | 3653 | return ExtendedPC(NULL); |
aoqi@0 | 3654 | #else |
aoqi@0 | 3655 | if (GetThreadContext(handle, &context)) { |
aoqi@0 | 3656 | #ifdef _M_AMD64 |
aoqi@0 | 3657 | return ExtendedPC((address) context.Rip); |
aoqi@0 | 3658 | #else |
aoqi@0 | 3659 | return ExtendedPC((address) context.Eip); |
aoqi@0 | 3660 | #endif |
aoqi@0 | 3661 | } else { |
aoqi@0 | 3662 | return ExtendedPC(NULL); |
aoqi@0 | 3663 | } |
aoqi@0 | 3664 | #endif |
aoqi@0 | 3665 | } |
aoqi@0 | 3666 | |
aoqi@0 | 3667 | // GetCurrentThreadId() returns DWORD |
aoqi@0 | 3668 | intx os::current_thread_id() { return GetCurrentThreadId(); } |
aoqi@0 | 3669 | |
aoqi@0 | 3670 | static int _initial_pid = 0; |
aoqi@0 | 3671 | |
aoqi@0 | 3672 | int os::current_process_id() |
aoqi@0 | 3673 | { |
aoqi@0 | 3674 | return (_initial_pid ? _initial_pid : _getpid()); |
aoqi@0 | 3675 | } |
aoqi@0 | 3676 | |
aoqi@0 | 3677 | int os::win32::_vm_page_size = 0; |
aoqi@0 | 3678 | int os::win32::_vm_allocation_granularity = 0; |
aoqi@0 | 3679 | int os::win32::_processor_type = 0; |
aoqi@0 | 3680 | // Processor level is not available on non-NT systems, use vm_version instead |
aoqi@0 | 3681 | int os::win32::_processor_level = 0; |
aoqi@0 | 3682 | julong os::win32::_physical_memory = 0; |
aoqi@0 | 3683 | size_t os::win32::_default_stack_size = 0; |
aoqi@0 | 3684 | |
aoqi@0 | 3685 | intx os::win32::_os_thread_limit = 0; |
aoqi@0 | 3686 | volatile intx os::win32::_os_thread_count = 0; |
aoqi@0 | 3687 | |
aoqi@0 | 3688 | bool os::win32::_is_nt = false; |
aoqi@0 | 3689 | bool os::win32::_is_windows_2003 = false; |
aoqi@0 | 3690 | bool os::win32::_is_windows_server = false; |
aoqi@0 | 3691 | |
aoqi@0 | 3692 | void os::win32::initialize_system_info() { |
aoqi@0 | 3693 | SYSTEM_INFO si; |
aoqi@0 | 3694 | GetSystemInfo(&si); |
aoqi@0 | 3695 | _vm_page_size = si.dwPageSize; |
aoqi@0 | 3696 | _vm_allocation_granularity = si.dwAllocationGranularity; |
aoqi@0 | 3697 | _processor_type = si.dwProcessorType; |
aoqi@0 | 3698 | _processor_level = si.wProcessorLevel; |
aoqi@0 | 3699 | set_processor_count(si.dwNumberOfProcessors); |
aoqi@0 | 3700 | |
aoqi@0 | 3701 | MEMORYSTATUSEX ms; |
aoqi@0 | 3702 | ms.dwLength = sizeof(ms); |
aoqi@0 | 3703 | |
aoqi@0 | 3704 | // also returns dwAvailPhys (free physical memory bytes), dwTotalVirtual, dwAvailVirtual, |
aoqi@0 | 3705 | // dwMemoryLoad (% of memory in use) |
aoqi@0 | 3706 | GlobalMemoryStatusEx(&ms); |
aoqi@0 | 3707 | _physical_memory = ms.ullTotalPhys; |
aoqi@0 | 3708 | |
aoqi@0 | 3709 | OSVERSIONINFOEX oi; |
aoqi@0 | 3710 | oi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); |
aoqi@0 | 3711 | GetVersionEx((OSVERSIONINFO*)&oi); |
aoqi@0 | 3712 | switch(oi.dwPlatformId) { |
aoqi@0 | 3713 | case VER_PLATFORM_WIN32_WINDOWS: _is_nt = false; break; |
aoqi@0 | 3714 | case VER_PLATFORM_WIN32_NT: |
aoqi@0 | 3715 | _is_nt = true; |
aoqi@0 | 3716 | { |
aoqi@0 | 3717 | int os_vers = oi.dwMajorVersion * 1000 + oi.dwMinorVersion; |
aoqi@0 | 3718 | if (os_vers == 5002) { |
aoqi@0 | 3719 | _is_windows_2003 = true; |
aoqi@0 | 3720 | } |
aoqi@0 | 3721 | if (oi.wProductType == VER_NT_DOMAIN_CONTROLLER || |
aoqi@0 | 3722 | oi.wProductType == VER_NT_SERVER) { |
aoqi@0 | 3723 | _is_windows_server = true; |
aoqi@0 | 3724 | } |
aoqi@0 | 3725 | } |
aoqi@0 | 3726 | break; |
aoqi@0 | 3727 | default: fatal("Unknown platform"); |
aoqi@0 | 3728 | } |
aoqi@0 | 3729 | |
aoqi@0 | 3730 | _default_stack_size = os::current_stack_size(); |
aoqi@0 | 3731 | assert(_default_stack_size > (size_t) _vm_page_size, "invalid stack size"); |
aoqi@0 | 3732 | assert((_default_stack_size & (_vm_page_size - 1)) == 0, |
aoqi@0 | 3733 | "stack size not a multiple of page size"); |
aoqi@0 | 3734 | |
aoqi@0 | 3735 | initialize_performance_counter(); |
aoqi@0 | 3736 | |
aoqi@0 | 3737 | // Win95/Win98 scheduler bug work-around. The Win95/98 scheduler is |
aoqi@0 | 3738 | // known to deadlock the system, if the VM issues to thread operations with |
aoqi@0 | 3739 | // a too high frequency, e.g., such as changing the priorities. |
aoqi@0 | 3740 | // The 6000 seems to work well - no deadlocks has been notices on the test |
aoqi@0 | 3741 | // programs that we have seen experience this problem. |
aoqi@0 | 3742 | if (!os::win32::is_nt()) { |
aoqi@0 | 3743 | StarvationMonitorInterval = 6000; |
aoqi@0 | 3744 | } |
aoqi@0 | 3745 | } |
aoqi@0 | 3746 | |
aoqi@0 | 3747 | |
aoqi@0 | 3748 | HINSTANCE os::win32::load_Windows_dll(const char* name, char *ebuf, int ebuflen) { |
aoqi@0 | 3749 | char path[MAX_PATH]; |
aoqi@0 | 3750 | DWORD size; |
aoqi@0 | 3751 | DWORD pathLen = (DWORD)sizeof(path); |
aoqi@0 | 3752 | HINSTANCE result = NULL; |
aoqi@0 | 3753 | |
aoqi@0 | 3754 | // only allow library name without path component |
aoqi@0 | 3755 | assert(strchr(name, '\\') == NULL, "path not allowed"); |
aoqi@0 | 3756 | assert(strchr(name, ':') == NULL, "path not allowed"); |
aoqi@0 | 3757 | if (strchr(name, '\\') != NULL || strchr(name, ':') != NULL) { |
aoqi@0 | 3758 | jio_snprintf(ebuf, ebuflen, |
aoqi@0 | 3759 | "Invalid parameter while calling os::win32::load_windows_dll(): cannot take path: %s", name); |
aoqi@0 | 3760 | return NULL; |
aoqi@0 | 3761 | } |
aoqi@0 | 3762 | |
aoqi@0 | 3763 | // search system directory |
aoqi@0 | 3764 | if ((size = GetSystemDirectory(path, pathLen)) > 0) { |
aoqi@0 | 3765 | strcat(path, "\\"); |
aoqi@0 | 3766 | strcat(path, name); |
aoqi@0 | 3767 | if ((result = (HINSTANCE)os::dll_load(path, ebuf, ebuflen)) != NULL) { |
aoqi@0 | 3768 | return result; |
aoqi@0 | 3769 | } |
aoqi@0 | 3770 | } |
aoqi@0 | 3771 | |
aoqi@0 | 3772 | // try Windows directory |
aoqi@0 | 3773 | if ((size = GetWindowsDirectory(path, pathLen)) > 0) { |
aoqi@0 | 3774 | strcat(path, "\\"); |
aoqi@0 | 3775 | strcat(path, name); |
aoqi@0 | 3776 | if ((result = (HINSTANCE)os::dll_load(path, ebuf, ebuflen)) != NULL) { |
aoqi@0 | 3777 | return result; |
aoqi@0 | 3778 | } |
aoqi@0 | 3779 | } |
aoqi@0 | 3780 | |
aoqi@0 | 3781 | jio_snprintf(ebuf, ebuflen, |
aoqi@0 | 3782 | "os::win32::load_windows_dll() cannot load %s from system directories.", name); |
aoqi@0 | 3783 | return NULL; |
aoqi@0 | 3784 | } |
aoqi@0 | 3785 | |
aoqi@0 | 3786 | void os::win32::setmode_streams() { |
aoqi@0 | 3787 | _setmode(_fileno(stdin), _O_BINARY); |
aoqi@0 | 3788 | _setmode(_fileno(stdout), _O_BINARY); |
aoqi@0 | 3789 | _setmode(_fileno(stderr), _O_BINARY); |
aoqi@0 | 3790 | } |
aoqi@0 | 3791 | |
aoqi@0 | 3792 | |
aoqi@0 | 3793 | bool os::is_debugger_attached() { |
aoqi@0 | 3794 | return IsDebuggerPresent() ? true : false; |
aoqi@0 | 3795 | } |
aoqi@0 | 3796 | |
aoqi@0 | 3797 | |
aoqi@0 | 3798 | void os::wait_for_keypress_at_exit(void) { |
aoqi@0 | 3799 | if (PauseAtExit) { |
aoqi@0 | 3800 | fprintf(stderr, "Press any key to continue...\n"); |
aoqi@0 | 3801 | fgetc(stdin); |
aoqi@0 | 3802 | } |
aoqi@0 | 3803 | } |
aoqi@0 | 3804 | |
aoqi@0 | 3805 | |
aoqi@0 | 3806 | int os::message_box(const char* title, const char* message) { |
aoqi@0 | 3807 | int result = MessageBox(NULL, message, title, |
aoqi@0 | 3808 | MB_YESNO | MB_ICONERROR | MB_SYSTEMMODAL | MB_DEFAULT_DESKTOP_ONLY); |
aoqi@0 | 3809 | return result == IDYES; |
aoqi@0 | 3810 | } |
aoqi@0 | 3811 | |
aoqi@0 | 3812 | int os::allocate_thread_local_storage() { |
aoqi@0 | 3813 | return TlsAlloc(); |
aoqi@0 | 3814 | } |
aoqi@0 | 3815 | |
aoqi@0 | 3816 | |
aoqi@0 | 3817 | void os::free_thread_local_storage(int index) { |
aoqi@0 | 3818 | TlsFree(index); |
aoqi@0 | 3819 | } |
aoqi@0 | 3820 | |
aoqi@0 | 3821 | |
aoqi@0 | 3822 | void os::thread_local_storage_at_put(int index, void* value) { |
aoqi@0 | 3823 | TlsSetValue(index, value); |
aoqi@0 | 3824 | assert(thread_local_storage_at(index) == value, "Just checking"); |
aoqi@0 | 3825 | } |
aoqi@0 | 3826 | |
aoqi@0 | 3827 | |
aoqi@0 | 3828 | void* os::thread_local_storage_at(int index) { |
aoqi@0 | 3829 | return TlsGetValue(index); |
aoqi@0 | 3830 | } |
aoqi@0 | 3831 | |
aoqi@0 | 3832 | |
aoqi@0 | 3833 | #ifndef PRODUCT |
aoqi@0 | 3834 | #ifndef _WIN64 |
aoqi@0 | 3835 | // Helpers to check whether NX protection is enabled |
aoqi@0 | 3836 | int nx_exception_filter(_EXCEPTION_POINTERS *pex) { |
aoqi@0 | 3837 | if (pex->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && |
aoqi@0 | 3838 | pex->ExceptionRecord->NumberParameters > 0 && |
aoqi@0 | 3839 | pex->ExceptionRecord->ExceptionInformation[0] == |
aoqi@0 | 3840 | EXCEPTION_INFO_EXEC_VIOLATION) { |
aoqi@0 | 3841 | return EXCEPTION_EXECUTE_HANDLER; |
aoqi@0 | 3842 | } |
aoqi@0 | 3843 | return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 3844 | } |
aoqi@0 | 3845 | |
aoqi@0 | 3846 | void nx_check_protection() { |
aoqi@0 | 3847 | // If NX is enabled we'll get an exception calling into code on the stack |
aoqi@0 | 3848 | char code[] = { (char)0xC3 }; // ret |
aoqi@0 | 3849 | void *code_ptr = (void *)code; |
aoqi@0 | 3850 | __try { |
aoqi@0 | 3851 | __asm call code_ptr |
aoqi@0 | 3852 | } __except(nx_exception_filter((_EXCEPTION_POINTERS*)_exception_info())) { |
aoqi@0 | 3853 | tty->print_raw_cr("NX protection detected."); |
aoqi@0 | 3854 | } |
aoqi@0 | 3855 | } |
aoqi@0 | 3856 | #endif // _WIN64 |
aoqi@0 | 3857 | #endif // PRODUCT |
aoqi@0 | 3858 | |
aoqi@0 | 3859 | // this is called _before_ the global arguments have been parsed |
aoqi@0 | 3860 | void os::init(void) { |
aoqi@0 | 3861 | _initial_pid = _getpid(); |
aoqi@0 | 3862 | |
aoqi@0 | 3863 | init_random(1234567); |
aoqi@0 | 3864 | |
aoqi@0 | 3865 | win32::initialize_system_info(); |
aoqi@0 | 3866 | win32::setmode_streams(); |
aoqi@0 | 3867 | init_page_sizes((size_t) win32::vm_page_size()); |
aoqi@0 | 3868 | |
aoqi@0 | 3869 | // For better scalability on MP systems (must be called after initialize_system_info) |
aoqi@0 | 3870 | #ifndef PRODUCT |
aoqi@0 | 3871 | if (is_MP()) { |
aoqi@0 | 3872 | NoYieldsInMicrolock = true; |
aoqi@0 | 3873 | } |
aoqi@0 | 3874 | #endif |
aoqi@0 | 3875 | // This may be overridden later when argument processing is done. |
aoqi@0 | 3876 | FLAG_SET_ERGO(bool, UseLargePagesIndividualAllocation, |
aoqi@0 | 3877 | os::win32::is_windows_2003()); |
aoqi@0 | 3878 | |
aoqi@0 | 3879 | // Initialize main_process and main_thread |
aoqi@0 | 3880 | main_process = GetCurrentProcess(); // Remember main_process is a pseudo handle |
aoqi@0 | 3881 | if (!DuplicateHandle(main_process, GetCurrentThread(), main_process, |
aoqi@0 | 3882 | &main_thread, THREAD_ALL_ACCESS, false, 0)) { |
aoqi@0 | 3883 | fatal("DuplicateHandle failed\n"); |
aoqi@0 | 3884 | } |
aoqi@0 | 3885 | main_thread_id = (int) GetCurrentThreadId(); |
aoqi@0 | 3886 | } |
aoqi@0 | 3887 | |
aoqi@0 | 3888 | // To install functions for atexit processing |
aoqi@0 | 3889 | extern "C" { |
aoqi@0 | 3890 | static void perfMemory_exit_helper() { |
aoqi@0 | 3891 | perfMemory_exit(); |
aoqi@0 | 3892 | } |
aoqi@0 | 3893 | } |
aoqi@0 | 3894 | |
aoqi@0 | 3895 | static jint initSock(); |
aoqi@0 | 3896 | |
aoqi@0 | 3897 | // this is called _after_ the global arguments have been parsed |
aoqi@0 | 3898 | jint os::init_2(void) { |
aoqi@0 | 3899 | // Allocate a single page and mark it as readable for safepoint polling |
aoqi@0 | 3900 | address polling_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READONLY); |
aoqi@0 | 3901 | guarantee( polling_page != NULL, "Reserve Failed for polling page"); |
aoqi@0 | 3902 | |
aoqi@0 | 3903 | address return_page = (address)VirtualAlloc(polling_page, os::vm_page_size(), MEM_COMMIT, PAGE_READONLY); |
aoqi@0 | 3904 | guarantee( return_page != NULL, "Commit Failed for polling page"); |
aoqi@0 | 3905 | |
aoqi@0 | 3906 | os::set_polling_page( polling_page ); |
aoqi@0 | 3907 | |
aoqi@0 | 3908 | #ifndef PRODUCT |
aoqi@0 | 3909 | if( Verbose && PrintMiscellaneous ) |
aoqi@0 | 3910 | tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); |
aoqi@0 | 3911 | #endif |
aoqi@0 | 3912 | |
aoqi@0 | 3913 | if (!UseMembar) { |
aoqi@0 | 3914 | address mem_serialize_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READWRITE); |
aoqi@0 | 3915 | guarantee( mem_serialize_page != NULL, "Reserve Failed for memory serialize page"); |
aoqi@0 | 3916 | |
aoqi@0 | 3917 | return_page = (address)VirtualAlloc(mem_serialize_page, os::vm_page_size(), MEM_COMMIT, PAGE_READWRITE); |
aoqi@0 | 3918 | guarantee( return_page != NULL, "Commit Failed for memory serialize page"); |
aoqi@0 | 3919 | |
aoqi@0 | 3920 | os::set_memory_serialize_page( mem_serialize_page ); |
aoqi@0 | 3921 | |
aoqi@0 | 3922 | #ifndef PRODUCT |
aoqi@0 | 3923 | if(Verbose && PrintMiscellaneous) |
aoqi@0 | 3924 | tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); |
aoqi@0 | 3925 | #endif |
aoqi@0 | 3926 | } |
aoqi@0 | 3927 | |
aoqi@0 | 3928 | // Setup Windows Exceptions |
aoqi@0 | 3929 | |
aoqi@0 | 3930 | // for debugging float code generation bugs |
aoqi@0 | 3931 | if (ForceFloatExceptions) { |
aoqi@0 | 3932 | #ifndef _WIN64 |
aoqi@0 | 3933 | static long fp_control_word = 0; |
aoqi@0 | 3934 | __asm { fstcw fp_control_word } |
aoqi@0 | 3935 | // see Intel PPro Manual, Vol. 2, p 7-16 |
aoqi@0 | 3936 | const long precision = 0x20; |
aoqi@0 | 3937 | const long underflow = 0x10; |
aoqi@0 | 3938 | const long overflow = 0x08; |
aoqi@0 | 3939 | const long zero_div = 0x04; |
aoqi@0 | 3940 | const long denorm = 0x02; |
aoqi@0 | 3941 | const long invalid = 0x01; |
aoqi@0 | 3942 | fp_control_word |= invalid; |
aoqi@0 | 3943 | __asm { fldcw fp_control_word } |
aoqi@0 | 3944 | #endif |
aoqi@0 | 3945 | } |
aoqi@0 | 3946 | |
aoqi@0 | 3947 | // If stack_commit_size is 0, windows will reserve the default size, |
aoqi@0 | 3948 | // but only commit a small portion of it. |
aoqi@0 | 3949 | size_t stack_commit_size = round_to(ThreadStackSize*K, os::vm_page_size()); |
aoqi@0 | 3950 | size_t default_reserve_size = os::win32::default_stack_size(); |
aoqi@0 | 3951 | size_t actual_reserve_size = stack_commit_size; |
aoqi@0 | 3952 | if (stack_commit_size < default_reserve_size) { |
aoqi@0 | 3953 | // If stack_commit_size == 0, we want this too |
aoqi@0 | 3954 | actual_reserve_size = default_reserve_size; |
aoqi@0 | 3955 | } |
aoqi@0 | 3956 | |
aoqi@0 | 3957 | // Check minimum allowable stack size for thread creation and to initialize |
aoqi@0 | 3958 | // the java system classes, including StackOverflowError - depends on page |
aoqi@0 | 3959 | // size. Add a page for compiler2 recursion in main thread. |
aoqi@0 | 3960 | // Add in 2*BytesPerWord times page size to account for VM stack during |
aoqi@0 | 3961 | // class initialization depending on 32 or 64 bit VM. |
aoqi@0 | 3962 | size_t min_stack_allowed = |
aoqi@0 | 3963 | (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ |
aoqi@0 | 3964 | 2*BytesPerWord COMPILER2_PRESENT(+1)) * os::vm_page_size(); |
aoqi@0 | 3965 | if (actual_reserve_size < min_stack_allowed) { |
aoqi@0 | 3966 | tty->print_cr("\nThe stack size specified is too small, " |
aoqi@0 | 3967 | "Specify at least %dk", |
aoqi@0 | 3968 | min_stack_allowed / K); |
aoqi@0 | 3969 | return JNI_ERR; |
aoqi@0 | 3970 | } |
aoqi@0 | 3971 | |
aoqi@0 | 3972 | JavaThread::set_stack_size_at_create(stack_commit_size); |
aoqi@0 | 3973 | |
aoqi@0 | 3974 | // Calculate theoretical max. size of Threads to guard gainst artifical |
aoqi@0 | 3975 | // out-of-memory situations, where all available address-space has been |
aoqi@0 | 3976 | // reserved by thread stacks. |
aoqi@0 | 3977 | assert(actual_reserve_size != 0, "Must have a stack"); |
aoqi@0 | 3978 | |
aoqi@0 | 3979 | // Calculate the thread limit when we should start doing Virtual Memory |
aoqi@0 | 3980 | // banging. Currently when the threads will have used all but 200Mb of space. |
aoqi@0 | 3981 | // |
aoqi@0 | 3982 | // TODO: consider performing a similar calculation for commit size instead |
aoqi@0 | 3983 | // as reserve size, since on a 64-bit platform we'll run into that more |
aoqi@0 | 3984 | // often than running out of virtual memory space. We can use the |
aoqi@0 | 3985 | // lower value of the two calculations as the os_thread_limit. |
aoqi@0 | 3986 | size_t max_address_space = ((size_t)1 << (BitsPerWord - 1)) - (200 * K * K); |
aoqi@0 | 3987 | win32::_os_thread_limit = (intx)(max_address_space / actual_reserve_size); |
aoqi@0 | 3988 | |
aoqi@0 | 3989 | // at exit methods are called in the reverse order of their registration. |
aoqi@0 | 3990 | // there is no limit to the number of functions registered. atexit does |
aoqi@0 | 3991 | // not set errno. |
aoqi@0 | 3992 | |
aoqi@0 | 3993 | if (PerfAllowAtExitRegistration) { |
aoqi@0 | 3994 | // only register atexit functions if PerfAllowAtExitRegistration is set. |
aoqi@0 | 3995 | // atexit functions can be delayed until process exit time, which |
aoqi@0 | 3996 | // can be problematic for embedded VM situations. Embedded VMs should |
aoqi@0 | 3997 | // call DestroyJavaVM() to assure that VM resources are released. |
aoqi@0 | 3998 | |
aoqi@0 | 3999 | // note: perfMemory_exit_helper atexit function may be removed in |
aoqi@0 | 4000 | // the future if the appropriate cleanup code can be added to the |
aoqi@0 | 4001 | // VM_Exit VMOperation's doit method. |
aoqi@0 | 4002 | if (atexit(perfMemory_exit_helper) != 0) { |
aoqi@0 | 4003 | warning("os::init_2 atexit(perfMemory_exit_helper) failed"); |
aoqi@0 | 4004 | } |
aoqi@0 | 4005 | } |
aoqi@0 | 4006 | |
aoqi@0 | 4007 | #ifndef _WIN64 |
aoqi@0 | 4008 | // Print something if NX is enabled (win32 on AMD64) |
aoqi@0 | 4009 | NOT_PRODUCT(if (PrintMiscellaneous && Verbose) nx_check_protection()); |
aoqi@0 | 4010 | #endif |
aoqi@0 | 4011 | |
aoqi@0 | 4012 | // initialize thread priority policy |
aoqi@0 | 4013 | prio_init(); |
aoqi@0 | 4014 | |
aoqi@0 | 4015 | if (UseNUMA && !ForceNUMA) { |
aoqi@0 | 4016 | UseNUMA = false; // We don't fully support this yet |
aoqi@0 | 4017 | } |
aoqi@0 | 4018 | |
aoqi@0 | 4019 | if (UseNUMAInterleaving) { |
aoqi@0 | 4020 | // first check whether this Windows OS supports VirtualAllocExNuma, if not ignore this flag |
aoqi@0 | 4021 | bool success = numa_interleaving_init(); |
aoqi@0 | 4022 | if (!success) UseNUMAInterleaving = false; |
aoqi@0 | 4023 | } |
aoqi@0 | 4024 | |
aoqi@0 | 4025 | if (initSock() != JNI_OK) { |
aoqi@0 | 4026 | return JNI_ERR; |
aoqi@0 | 4027 | } |
aoqi@0 | 4028 | |
aoqi@0 | 4029 | return JNI_OK; |
aoqi@0 | 4030 | } |
aoqi@0 | 4031 | |
aoqi@0 | 4032 | void os::init_3(void) { |
aoqi@0 | 4033 | return; |
aoqi@0 | 4034 | } |
aoqi@0 | 4035 | |
aoqi@0 | 4036 | // Mark the polling page as unreadable |
aoqi@0 | 4037 | void os::make_polling_page_unreadable(void) { |
aoqi@0 | 4038 | DWORD old_status; |
aoqi@0 | 4039 | if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_NOACCESS, &old_status) ) |
aoqi@0 | 4040 | fatal("Could not disable polling page"); |
aoqi@0 | 4041 | }; |
aoqi@0 | 4042 | |
aoqi@0 | 4043 | // Mark the polling page as readable |
aoqi@0 | 4044 | void os::make_polling_page_readable(void) { |
aoqi@0 | 4045 | DWORD old_status; |
aoqi@0 | 4046 | if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_READONLY, &old_status) ) |
aoqi@0 | 4047 | fatal("Could not enable polling page"); |
aoqi@0 | 4048 | }; |
aoqi@0 | 4049 | |
aoqi@0 | 4050 | |
aoqi@0 | 4051 | int os::stat(const char *path, struct stat *sbuf) { |
aoqi@0 | 4052 | char pathbuf[MAX_PATH]; |
aoqi@0 | 4053 | if (strlen(path) > MAX_PATH - 1) { |
aoqi@0 | 4054 | errno = ENAMETOOLONG; |
aoqi@0 | 4055 | return -1; |
aoqi@0 | 4056 | } |
aoqi@0 | 4057 | os::native_path(strcpy(pathbuf, path)); |
aoqi@0 | 4058 | int ret = ::stat(pathbuf, sbuf); |
aoqi@0 | 4059 | if (sbuf != NULL && UseUTCFileTimestamp) { |
aoqi@0 | 4060 | // Fix for 6539723. st_mtime returned from stat() is dependent on |
aoqi@0 | 4061 | // the system timezone and so can return different values for the |
aoqi@0 | 4062 | // same file if/when daylight savings time changes. This adjustment |
aoqi@0 | 4063 | // makes sure the same timestamp is returned regardless of the TZ. |
aoqi@0 | 4064 | // |
aoqi@0 | 4065 | // See: |
aoqi@0 | 4066 | // http://msdn.microsoft.com/library/ |
aoqi@0 | 4067 | // default.asp?url=/library/en-us/sysinfo/base/ |
aoqi@0 | 4068 | // time_zone_information_str.asp |
aoqi@0 | 4069 | // and |
aoqi@0 | 4070 | // http://msdn.microsoft.com/library/default.asp?url= |
aoqi@0 | 4071 | // /library/en-us/sysinfo/base/settimezoneinformation.asp |
aoqi@0 | 4072 | // |
aoqi@0 | 4073 | // NOTE: there is a insidious bug here: If the timezone is changed |
aoqi@0 | 4074 | // after the call to stat() but before 'GetTimeZoneInformation()', then |
aoqi@0 | 4075 | // the adjustment we do here will be wrong and we'll return the wrong |
aoqi@0 | 4076 | // value (which will likely end up creating an invalid class data |
aoqi@0 | 4077 | // archive). Absent a better API for this, or some time zone locking |
aoqi@0 | 4078 | // mechanism, we'll have to live with this risk. |
aoqi@0 | 4079 | TIME_ZONE_INFORMATION tz; |
aoqi@0 | 4080 | DWORD tzid = GetTimeZoneInformation(&tz); |
aoqi@0 | 4081 | int daylightBias = |
aoqi@0 | 4082 | (tzid == TIME_ZONE_ID_DAYLIGHT) ? tz.DaylightBias : tz.StandardBias; |
aoqi@0 | 4083 | sbuf->st_mtime += (tz.Bias + daylightBias) * 60; |
aoqi@0 | 4084 | } |
aoqi@0 | 4085 | return ret; |
aoqi@0 | 4086 | } |
aoqi@0 | 4087 | |
aoqi@0 | 4088 | |
aoqi@0 | 4089 | #define FT2INT64(ft) \ |
aoqi@0 | 4090 | ((jlong)((jlong)(ft).dwHighDateTime << 32 | (julong)(ft).dwLowDateTime)) |
aoqi@0 | 4091 | |
aoqi@0 | 4092 | |
aoqi@0 | 4093 | // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) |
aoqi@0 | 4094 | // are used by JVM M&M and JVMTI to get user+sys or user CPU time |
aoqi@0 | 4095 | // of a thread. |
aoqi@0 | 4096 | // |
aoqi@0 | 4097 | // current_thread_cpu_time() and thread_cpu_time(Thread*) returns |
aoqi@0 | 4098 | // the fast estimate available on the platform. |
aoqi@0 | 4099 | |
aoqi@0 | 4100 | // current_thread_cpu_time() is not optimized for Windows yet |
aoqi@0 | 4101 | jlong os::current_thread_cpu_time() { |
aoqi@0 | 4102 | // return user + sys since the cost is the same |
aoqi@0 | 4103 | return os::thread_cpu_time(Thread::current(), true /* user+sys */); |
aoqi@0 | 4104 | } |
aoqi@0 | 4105 | |
aoqi@0 | 4106 | jlong os::thread_cpu_time(Thread* thread) { |
aoqi@0 | 4107 | // consistent with what current_thread_cpu_time() returns. |
aoqi@0 | 4108 | return os::thread_cpu_time(thread, true /* user+sys */); |
aoqi@0 | 4109 | } |
aoqi@0 | 4110 | |
aoqi@0 | 4111 | jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { |
aoqi@0 | 4112 | return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); |
aoqi@0 | 4113 | } |
aoqi@0 | 4114 | |
aoqi@0 | 4115 | jlong os::thread_cpu_time(Thread* thread, bool user_sys_cpu_time) { |
aoqi@0 | 4116 | // This code is copy from clasic VM -> hpi::sysThreadCPUTime |
aoqi@0 | 4117 | // If this function changes, os::is_thread_cpu_time_supported() should too |
aoqi@0 | 4118 | if (os::win32::is_nt()) { |
aoqi@0 | 4119 | FILETIME CreationTime; |
aoqi@0 | 4120 | FILETIME ExitTime; |
aoqi@0 | 4121 | FILETIME KernelTime; |
aoqi@0 | 4122 | FILETIME UserTime; |
aoqi@0 | 4123 | |
aoqi@0 | 4124 | if ( GetThreadTimes(thread->osthread()->thread_handle(), |
aoqi@0 | 4125 | &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0) |
aoqi@0 | 4126 | return -1; |
aoqi@0 | 4127 | else |
aoqi@0 | 4128 | if (user_sys_cpu_time) { |
aoqi@0 | 4129 | return (FT2INT64(UserTime) + FT2INT64(KernelTime)) * 100; |
aoqi@0 | 4130 | } else { |
aoqi@0 | 4131 | return FT2INT64(UserTime) * 100; |
aoqi@0 | 4132 | } |
aoqi@0 | 4133 | } else { |
aoqi@0 | 4134 | return (jlong) timeGetTime() * 1000000; |
aoqi@0 | 4135 | } |
aoqi@0 | 4136 | } |
aoqi@0 | 4137 | |
aoqi@0 | 4138 | void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { |
aoqi@0 | 4139 | info_ptr->max_value = ALL_64_BITS; // the max value -- all 64 bits |
aoqi@0 | 4140 | info_ptr->may_skip_backward = false; // GetThreadTimes returns absolute time |
aoqi@0 | 4141 | info_ptr->may_skip_forward = false; // GetThreadTimes returns absolute time |
aoqi@0 | 4142 | info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned |
aoqi@0 | 4143 | } |
aoqi@0 | 4144 | |
aoqi@0 | 4145 | void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { |
aoqi@0 | 4146 | info_ptr->max_value = ALL_64_BITS; // the max value -- all 64 bits |
aoqi@0 | 4147 | info_ptr->may_skip_backward = false; // GetThreadTimes returns absolute time |
aoqi@0 | 4148 | info_ptr->may_skip_forward = false; // GetThreadTimes returns absolute time |
aoqi@0 | 4149 | info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned |
aoqi@0 | 4150 | } |
aoqi@0 | 4151 | |
aoqi@0 | 4152 | bool os::is_thread_cpu_time_supported() { |
aoqi@0 | 4153 | // see os::thread_cpu_time |
aoqi@0 | 4154 | if (os::win32::is_nt()) { |
aoqi@0 | 4155 | FILETIME CreationTime; |
aoqi@0 | 4156 | FILETIME ExitTime; |
aoqi@0 | 4157 | FILETIME KernelTime; |
aoqi@0 | 4158 | FILETIME UserTime; |
aoqi@0 | 4159 | |
aoqi@0 | 4160 | if ( GetThreadTimes(GetCurrentThread(), |
aoqi@0 | 4161 | &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0) |
aoqi@0 | 4162 | return false; |
aoqi@0 | 4163 | else |
aoqi@0 | 4164 | return true; |
aoqi@0 | 4165 | } else { |
aoqi@0 | 4166 | return false; |
aoqi@0 | 4167 | } |
aoqi@0 | 4168 | } |
aoqi@0 | 4169 | |
aoqi@0 | 4170 | // Windows does't provide a loadavg primitive so this is stubbed out for now. |
aoqi@0 | 4171 | // It does have primitives (PDH API) to get CPU usage and run queue length. |
aoqi@0 | 4172 | // "\\Processor(_Total)\\% Processor Time", "\\System\\Processor Queue Length" |
aoqi@0 | 4173 | // If we wanted to implement loadavg on Windows, we have a few options: |
aoqi@0 | 4174 | // |
aoqi@0 | 4175 | // a) Query CPU usage and run queue length and "fake" an answer by |
aoqi@0 | 4176 | // returning the CPU usage if it's under 100%, and the run queue |
aoqi@0 | 4177 | // length otherwise. It turns out that querying is pretty slow |
aoqi@0 | 4178 | // on Windows, on the order of 200 microseconds on a fast machine. |
aoqi@0 | 4179 | // Note that on the Windows the CPU usage value is the % usage |
aoqi@0 | 4180 | // since the last time the API was called (and the first call |
aoqi@0 | 4181 | // returns 100%), so we'd have to deal with that as well. |
aoqi@0 | 4182 | // |
aoqi@0 | 4183 | // b) Sample the "fake" answer using a sampling thread and store |
aoqi@0 | 4184 | // the answer in a global variable. The call to loadavg would |
aoqi@0 | 4185 | // just return the value of the global, avoiding the slow query. |
aoqi@0 | 4186 | // |
aoqi@0 | 4187 | // c) Sample a better answer using exponential decay to smooth the |
aoqi@0 | 4188 | // value. This is basically the algorithm used by UNIX kernels. |
aoqi@0 | 4189 | // |
aoqi@0 | 4190 | // Note that sampling thread starvation could affect both (b) and (c). |
aoqi@0 | 4191 | int os::loadavg(double loadavg[], int nelem) { |
aoqi@0 | 4192 | return -1; |
aoqi@0 | 4193 | } |
aoqi@0 | 4194 | |
aoqi@0 | 4195 | |
aoqi@0 | 4196 | // DontYieldALot=false by default: dutifully perform all yields as requested by JVM_Yield() |
aoqi@0 | 4197 | bool os::dont_yield() { |
aoqi@0 | 4198 | return DontYieldALot; |
aoqi@0 | 4199 | } |
aoqi@0 | 4200 | |
aoqi@0 | 4201 | // This method is a slightly reworked copy of JDK's sysOpen |
aoqi@0 | 4202 | // from src/windows/hpi/src/sys_api_md.c |
aoqi@0 | 4203 | |
aoqi@0 | 4204 | int os::open(const char *path, int oflag, int mode) { |
aoqi@0 | 4205 | char pathbuf[MAX_PATH]; |
aoqi@0 | 4206 | |
aoqi@0 | 4207 | if (strlen(path) > MAX_PATH - 1) { |
aoqi@0 | 4208 | errno = ENAMETOOLONG; |
aoqi@0 | 4209 | return -1; |
aoqi@0 | 4210 | } |
aoqi@0 | 4211 | os::native_path(strcpy(pathbuf, path)); |
aoqi@0 | 4212 | return ::open(pathbuf, oflag | O_BINARY | O_NOINHERIT, mode); |
aoqi@0 | 4213 | } |
aoqi@0 | 4214 | |
aoqi@0 | 4215 | FILE* os::open(int fd, const char* mode) { |
aoqi@0 | 4216 | return ::_fdopen(fd, mode); |
aoqi@0 | 4217 | } |
aoqi@0 | 4218 | |
aoqi@0 | 4219 | // Is a (classpath) directory empty? |
aoqi@0 | 4220 | bool os::dir_is_empty(const char* path) { |
aoqi@0 | 4221 | WIN32_FIND_DATA fd; |
aoqi@0 | 4222 | HANDLE f = FindFirstFile(path, &fd); |
aoqi@0 | 4223 | if (f == INVALID_HANDLE_VALUE) { |
aoqi@0 | 4224 | return true; |
aoqi@0 | 4225 | } |
aoqi@0 | 4226 | FindClose(f); |
aoqi@0 | 4227 | return false; |
aoqi@0 | 4228 | } |
aoqi@0 | 4229 | |
aoqi@0 | 4230 | // create binary file, rewriting existing file if required |
aoqi@0 | 4231 | int os::create_binary_file(const char* path, bool rewrite_existing) { |
aoqi@0 | 4232 | int oflags = _O_CREAT | _O_WRONLY | _O_BINARY; |
aoqi@0 | 4233 | if (!rewrite_existing) { |
aoqi@0 | 4234 | oflags |= _O_EXCL; |
aoqi@0 | 4235 | } |
aoqi@0 | 4236 | return ::open(path, oflags, _S_IREAD | _S_IWRITE); |
aoqi@0 | 4237 | } |
aoqi@0 | 4238 | |
aoqi@0 | 4239 | // return current position of file pointer |
aoqi@0 | 4240 | jlong os::current_file_offset(int fd) { |
aoqi@0 | 4241 | return (jlong)::_lseeki64(fd, (__int64)0L, SEEK_CUR); |
aoqi@0 | 4242 | } |
aoqi@0 | 4243 | |
aoqi@0 | 4244 | // move file pointer to the specified offset |
aoqi@0 | 4245 | jlong os::seek_to_file_offset(int fd, jlong offset) { |
aoqi@0 | 4246 | return (jlong)::_lseeki64(fd, (__int64)offset, SEEK_SET); |
aoqi@0 | 4247 | } |
aoqi@0 | 4248 | |
aoqi@0 | 4249 | |
aoqi@0 | 4250 | jlong os::lseek(int fd, jlong offset, int whence) { |
aoqi@0 | 4251 | return (jlong) ::_lseeki64(fd, offset, whence); |
aoqi@0 | 4252 | } |
aoqi@0 | 4253 | |
aoqi@0 | 4254 | // This method is a slightly reworked copy of JDK's sysNativePath |
aoqi@0 | 4255 | // from src/windows/hpi/src/path_md.c |
aoqi@0 | 4256 | |
aoqi@0 | 4257 | /* Convert a pathname to native format. On win32, this involves forcing all |
aoqi@0 | 4258 | separators to be '\\' rather than '/' (both are legal inputs, but Win95 |
aoqi@0 | 4259 | sometimes rejects '/') and removing redundant separators. The input path is |
aoqi@0 | 4260 | assumed to have been converted into the character encoding used by the local |
aoqi@0 | 4261 | system. Because this might be a double-byte encoding, care is taken to |
aoqi@0 | 4262 | treat double-byte lead characters correctly. |
aoqi@0 | 4263 | |
aoqi@0 | 4264 | This procedure modifies the given path in place, as the result is never |
aoqi@0 | 4265 | longer than the original. There is no error return; this operation always |
aoqi@0 | 4266 | succeeds. */ |
aoqi@0 | 4267 | char * os::native_path(char *path) { |
aoqi@0 | 4268 | char *src = path, *dst = path, *end = path; |
aoqi@0 | 4269 | char *colon = NULL; /* If a drive specifier is found, this will |
aoqi@0 | 4270 | point to the colon following the drive |
aoqi@0 | 4271 | letter */ |
aoqi@0 | 4272 | |
aoqi@0 | 4273 | /* Assumption: '/', '\\', ':', and drive letters are never lead bytes */ |
aoqi@0 | 4274 | assert(((!::IsDBCSLeadByte('/')) |
aoqi@0 | 4275 | && (!::IsDBCSLeadByte('\\')) |
aoqi@0 | 4276 | && (!::IsDBCSLeadByte(':'))), |
aoqi@0 | 4277 | "Illegal lead byte"); |
aoqi@0 | 4278 | |
aoqi@0 | 4279 | /* Check for leading separators */ |
aoqi@0 | 4280 | #define isfilesep(c) ((c) == '/' || (c) == '\\') |
aoqi@0 | 4281 | while (isfilesep(*src)) { |
aoqi@0 | 4282 | src++; |
aoqi@0 | 4283 | } |
aoqi@0 | 4284 | |
aoqi@0 | 4285 | if (::isalpha(*src) && !::IsDBCSLeadByte(*src) && src[1] == ':') { |
aoqi@0 | 4286 | /* Remove leading separators if followed by drive specifier. This |
aoqi@0 | 4287 | hack is necessary to support file URLs containing drive |
aoqi@0 | 4288 | specifiers (e.g., "file://c:/path"). As a side effect, |
aoqi@0 | 4289 | "/c:/path" can be used as an alternative to "c:/path". */ |
aoqi@0 | 4290 | *dst++ = *src++; |
aoqi@0 | 4291 | colon = dst; |
aoqi@0 | 4292 | *dst++ = ':'; |
aoqi@0 | 4293 | src++; |
aoqi@0 | 4294 | } else { |
aoqi@0 | 4295 | src = path; |
aoqi@0 | 4296 | if (isfilesep(src[0]) && isfilesep(src[1])) { |
aoqi@0 | 4297 | /* UNC pathname: Retain first separator; leave src pointed at |
aoqi@0 | 4298 | second separator so that further separators will be collapsed |
aoqi@0 | 4299 | into the second separator. The result will be a pathname |
aoqi@0 | 4300 | beginning with "\\\\" followed (most likely) by a host name. */ |
aoqi@0 | 4301 | src = dst = path + 1; |
aoqi@0 | 4302 | path[0] = '\\'; /* Force first separator to '\\' */ |
aoqi@0 | 4303 | } |
aoqi@0 | 4304 | } |
aoqi@0 | 4305 | |
aoqi@0 | 4306 | end = dst; |
aoqi@0 | 4307 | |
aoqi@0 | 4308 | /* Remove redundant separators from remainder of path, forcing all |
aoqi@0 | 4309 | separators to be '\\' rather than '/'. Also, single byte space |
aoqi@0 | 4310 | characters are removed from the end of the path because those |
aoqi@0 | 4311 | are not legal ending characters on this operating system. |
aoqi@0 | 4312 | */ |
aoqi@0 | 4313 | while (*src != '\0') { |
aoqi@0 | 4314 | if (isfilesep(*src)) { |
aoqi@0 | 4315 | *dst++ = '\\'; src++; |
aoqi@0 | 4316 | while (isfilesep(*src)) src++; |
aoqi@0 | 4317 | if (*src == '\0') { |
aoqi@0 | 4318 | /* Check for trailing separator */ |
aoqi@0 | 4319 | end = dst; |
aoqi@0 | 4320 | if (colon == dst - 2) break; /* "z:\\" */ |
aoqi@0 | 4321 | if (dst == path + 1) break; /* "\\" */ |
aoqi@0 | 4322 | if (dst == path + 2 && isfilesep(path[0])) { |
aoqi@0 | 4323 | /* "\\\\" is not collapsed to "\\" because "\\\\" marks the |
aoqi@0 | 4324 | beginning of a UNC pathname. Even though it is not, by |
aoqi@0 | 4325 | itself, a valid UNC pathname, we leave it as is in order |
aoqi@0 | 4326 | to be consistent with the path canonicalizer as well |
aoqi@0 | 4327 | as the win32 APIs, which treat this case as an invalid |
aoqi@0 | 4328 | UNC pathname rather than as an alias for the root |
aoqi@0 | 4329 | directory of the current drive. */ |
aoqi@0 | 4330 | break; |
aoqi@0 | 4331 | } |
aoqi@0 | 4332 | end = --dst; /* Path does not denote a root directory, so |
aoqi@0 | 4333 | remove trailing separator */ |
aoqi@0 | 4334 | break; |
aoqi@0 | 4335 | } |
aoqi@0 | 4336 | end = dst; |
aoqi@0 | 4337 | } else { |
aoqi@0 | 4338 | if (::IsDBCSLeadByte(*src)) { /* Copy a double-byte character */ |
aoqi@0 | 4339 | *dst++ = *src++; |
aoqi@0 | 4340 | if (*src) *dst++ = *src++; |
aoqi@0 | 4341 | end = dst; |
aoqi@0 | 4342 | } else { /* Copy a single-byte character */ |
aoqi@0 | 4343 | char c = *src++; |
aoqi@0 | 4344 | *dst++ = c; |
aoqi@0 | 4345 | /* Space is not a legal ending character */ |
aoqi@0 | 4346 | if (c != ' ') end = dst; |
aoqi@0 | 4347 | } |
aoqi@0 | 4348 | } |
aoqi@0 | 4349 | } |
aoqi@0 | 4350 | |
aoqi@0 | 4351 | *end = '\0'; |
aoqi@0 | 4352 | |
aoqi@0 | 4353 | /* For "z:", add "." to work around a bug in the C runtime library */ |
aoqi@0 | 4354 | if (colon == dst - 1) { |
aoqi@0 | 4355 | path[2] = '.'; |
aoqi@0 | 4356 | path[3] = '\0'; |
aoqi@0 | 4357 | } |
aoqi@0 | 4358 | |
aoqi@0 | 4359 | return path; |
aoqi@0 | 4360 | } |
aoqi@0 | 4361 | |
aoqi@0 | 4362 | // This code is a copy of JDK's sysSetLength |
aoqi@0 | 4363 | // from src/windows/hpi/src/sys_api_md.c |
aoqi@0 | 4364 | |
aoqi@0 | 4365 | int os::ftruncate(int fd, jlong length) { |
aoqi@0 | 4366 | HANDLE h = (HANDLE)::_get_osfhandle(fd); |
aoqi@0 | 4367 | long high = (long)(length >> 32); |
aoqi@0 | 4368 | DWORD ret; |
aoqi@0 | 4369 | |
aoqi@0 | 4370 | if (h == (HANDLE)(-1)) { |
aoqi@0 | 4371 | return -1; |
aoqi@0 | 4372 | } |
aoqi@0 | 4373 | |
aoqi@0 | 4374 | ret = ::SetFilePointer(h, (long)(length), &high, FILE_BEGIN); |
aoqi@0 | 4375 | if ((ret == 0xFFFFFFFF) && (::GetLastError() != NO_ERROR)) { |
aoqi@0 | 4376 | return -1; |
aoqi@0 | 4377 | } |
aoqi@0 | 4378 | |
aoqi@0 | 4379 | if (::SetEndOfFile(h) == FALSE) { |
aoqi@0 | 4380 | return -1; |
aoqi@0 | 4381 | } |
aoqi@0 | 4382 | |
aoqi@0 | 4383 | return 0; |
aoqi@0 | 4384 | } |
aoqi@0 | 4385 | |
aoqi@0 | 4386 | |
aoqi@0 | 4387 | // This code is a copy of JDK's sysSync |
aoqi@0 | 4388 | // from src/windows/hpi/src/sys_api_md.c |
aoqi@0 | 4389 | // except for the legacy workaround for a bug in Win 98 |
aoqi@0 | 4390 | |
aoqi@0 | 4391 | int os::fsync(int fd) { |
aoqi@0 | 4392 | HANDLE handle = (HANDLE)::_get_osfhandle(fd); |
aoqi@0 | 4393 | |
aoqi@0 | 4394 | if ( (!::FlushFileBuffers(handle)) && |
aoqi@0 | 4395 | (GetLastError() != ERROR_ACCESS_DENIED) ) { |
aoqi@0 | 4396 | /* from winerror.h */ |
aoqi@0 | 4397 | return -1; |
aoqi@0 | 4398 | } |
aoqi@0 | 4399 | return 0; |
aoqi@0 | 4400 | } |
aoqi@0 | 4401 | |
aoqi@0 | 4402 | static int nonSeekAvailable(int, long *); |
aoqi@0 | 4403 | static int stdinAvailable(int, long *); |
aoqi@0 | 4404 | |
aoqi@0 | 4405 | #define S_ISCHR(mode) (((mode) & _S_IFCHR) == _S_IFCHR) |
aoqi@0 | 4406 | #define S_ISFIFO(mode) (((mode) & _S_IFIFO) == _S_IFIFO) |
aoqi@0 | 4407 | |
aoqi@0 | 4408 | // This code is a copy of JDK's sysAvailable |
aoqi@0 | 4409 | // from src/windows/hpi/src/sys_api_md.c |
aoqi@0 | 4410 | |
aoqi@0 | 4411 | int os::available(int fd, jlong *bytes) { |
aoqi@0 | 4412 | jlong cur, end; |
aoqi@0 | 4413 | struct _stati64 stbuf64; |
aoqi@0 | 4414 | |
aoqi@0 | 4415 | if (::_fstati64(fd, &stbuf64) >= 0) { |
aoqi@0 | 4416 | int mode = stbuf64.st_mode; |
aoqi@0 | 4417 | if (S_ISCHR(mode) || S_ISFIFO(mode)) { |
aoqi@0 | 4418 | int ret; |
aoqi@0 | 4419 | long lpbytes; |
aoqi@0 | 4420 | if (fd == 0) { |
aoqi@0 | 4421 | ret = stdinAvailable(fd, &lpbytes); |
aoqi@0 | 4422 | } else { |
aoqi@0 | 4423 | ret = nonSeekAvailable(fd, &lpbytes); |
aoqi@0 | 4424 | } |
aoqi@0 | 4425 | (*bytes) = (jlong)(lpbytes); |
aoqi@0 | 4426 | return ret; |
aoqi@0 | 4427 | } |
aoqi@0 | 4428 | if ((cur = ::_lseeki64(fd, 0L, SEEK_CUR)) == -1) { |
aoqi@0 | 4429 | return FALSE; |
aoqi@0 | 4430 | } else if ((end = ::_lseeki64(fd, 0L, SEEK_END)) == -1) { |
aoqi@0 | 4431 | return FALSE; |
aoqi@0 | 4432 | } else if (::_lseeki64(fd, cur, SEEK_SET) == -1) { |
aoqi@0 | 4433 | return FALSE; |
aoqi@0 | 4434 | } |
aoqi@0 | 4435 | *bytes = end - cur; |
aoqi@0 | 4436 | return TRUE; |
aoqi@0 | 4437 | } else { |
aoqi@0 | 4438 | return FALSE; |
aoqi@0 | 4439 | } |
aoqi@0 | 4440 | } |
aoqi@0 | 4441 | |
aoqi@0 | 4442 | // This code is a copy of JDK's nonSeekAvailable |
aoqi@0 | 4443 | // from src/windows/hpi/src/sys_api_md.c |
aoqi@0 | 4444 | |
aoqi@0 | 4445 | static int nonSeekAvailable(int fd, long *pbytes) { |
aoqi@0 | 4446 | /* This is used for available on non-seekable devices |
aoqi@0 | 4447 | * (like both named and anonymous pipes, such as pipes |
aoqi@0 | 4448 | * connected to an exec'd process). |
aoqi@0 | 4449 | * Standard Input is a special case. |
aoqi@0 | 4450 | * |
aoqi@0 | 4451 | */ |
aoqi@0 | 4452 | HANDLE han; |
aoqi@0 | 4453 | |
aoqi@0 | 4454 | if ((han = (HANDLE) ::_get_osfhandle(fd)) == (HANDLE)(-1)) { |
aoqi@0 | 4455 | return FALSE; |
aoqi@0 | 4456 | } |
aoqi@0 | 4457 | |
aoqi@0 | 4458 | if (! ::PeekNamedPipe(han, NULL, 0, NULL, (LPDWORD)pbytes, NULL)) { |
aoqi@0 | 4459 | /* PeekNamedPipe fails when at EOF. In that case we |
aoqi@0 | 4460 | * simply make *pbytes = 0 which is consistent with the |
aoqi@0 | 4461 | * behavior we get on Solaris when an fd is at EOF. |
aoqi@0 | 4462 | * The only alternative is to raise an Exception, |
aoqi@0 | 4463 | * which isn't really warranted. |
aoqi@0 | 4464 | */ |
aoqi@0 | 4465 | if (::GetLastError() != ERROR_BROKEN_PIPE) { |
aoqi@0 | 4466 | return FALSE; |
aoqi@0 | 4467 | } |
aoqi@0 | 4468 | *pbytes = 0; |
aoqi@0 | 4469 | } |
aoqi@0 | 4470 | return TRUE; |
aoqi@0 | 4471 | } |
aoqi@0 | 4472 | |
aoqi@0 | 4473 | #define MAX_INPUT_EVENTS 2000 |
aoqi@0 | 4474 | |
aoqi@0 | 4475 | // This code is a copy of JDK's stdinAvailable |
aoqi@0 | 4476 | // from src/windows/hpi/src/sys_api_md.c |
aoqi@0 | 4477 | |
aoqi@0 | 4478 | static int stdinAvailable(int fd, long *pbytes) { |
aoqi@0 | 4479 | HANDLE han; |
aoqi@0 | 4480 | DWORD numEventsRead = 0; /* Number of events read from buffer */ |
aoqi@0 | 4481 | DWORD numEvents = 0; /* Number of events in buffer */ |
aoqi@0 | 4482 | DWORD i = 0; /* Loop index */ |
aoqi@0 | 4483 | DWORD curLength = 0; /* Position marker */ |
aoqi@0 | 4484 | DWORD actualLength = 0; /* Number of bytes readable */ |
aoqi@0 | 4485 | BOOL error = FALSE; /* Error holder */ |
aoqi@0 | 4486 | INPUT_RECORD *lpBuffer; /* Pointer to records of input events */ |
aoqi@0 | 4487 | |
aoqi@0 | 4488 | if ((han = ::GetStdHandle(STD_INPUT_HANDLE)) == INVALID_HANDLE_VALUE) { |
aoqi@0 | 4489 | return FALSE; |
aoqi@0 | 4490 | } |
aoqi@0 | 4491 | |
aoqi@0 | 4492 | /* Construct an array of input records in the console buffer */ |
aoqi@0 | 4493 | error = ::GetNumberOfConsoleInputEvents(han, &numEvents); |
aoqi@0 | 4494 | if (error == 0) { |
aoqi@0 | 4495 | return nonSeekAvailable(fd, pbytes); |
aoqi@0 | 4496 | } |
aoqi@0 | 4497 | |
aoqi@0 | 4498 | /* lpBuffer must fit into 64K or else PeekConsoleInput fails */ |
aoqi@0 | 4499 | if (numEvents > MAX_INPUT_EVENTS) { |
aoqi@0 | 4500 | numEvents = MAX_INPUT_EVENTS; |
aoqi@0 | 4501 | } |
aoqi@0 | 4502 | |
aoqi@0 | 4503 | lpBuffer = (INPUT_RECORD *)os::malloc(numEvents * sizeof(INPUT_RECORD), mtInternal); |
aoqi@0 | 4504 | if (lpBuffer == NULL) { |
aoqi@0 | 4505 | return FALSE; |
aoqi@0 | 4506 | } |
aoqi@0 | 4507 | |
aoqi@0 | 4508 | error = ::PeekConsoleInput(han, lpBuffer, numEvents, &numEventsRead); |
aoqi@0 | 4509 | if (error == 0) { |
aoqi@0 | 4510 | os::free(lpBuffer, mtInternal); |
aoqi@0 | 4511 | return FALSE; |
aoqi@0 | 4512 | } |
aoqi@0 | 4513 | |
aoqi@0 | 4514 | /* Examine input records for the number of bytes available */ |
aoqi@0 | 4515 | for(i=0; i<numEvents; i++) { |
aoqi@0 | 4516 | if (lpBuffer[i].EventType == KEY_EVENT) { |
aoqi@0 | 4517 | |
aoqi@0 | 4518 | KEY_EVENT_RECORD *keyRecord = (KEY_EVENT_RECORD *) |
aoqi@0 | 4519 | &(lpBuffer[i].Event); |
aoqi@0 | 4520 | if (keyRecord->bKeyDown == TRUE) { |
aoqi@0 | 4521 | CHAR *keyPressed = (CHAR *) &(keyRecord->uChar); |
aoqi@0 | 4522 | curLength++; |
aoqi@0 | 4523 | if (*keyPressed == '\r') { |
aoqi@0 | 4524 | actualLength = curLength; |
aoqi@0 | 4525 | } |
aoqi@0 | 4526 | } |
aoqi@0 | 4527 | } |
aoqi@0 | 4528 | } |
aoqi@0 | 4529 | |
aoqi@0 | 4530 | if(lpBuffer != NULL) { |
aoqi@0 | 4531 | os::free(lpBuffer, mtInternal); |
aoqi@0 | 4532 | } |
aoqi@0 | 4533 | |
aoqi@0 | 4534 | *pbytes = (long) actualLength; |
aoqi@0 | 4535 | return TRUE; |
aoqi@0 | 4536 | } |
aoqi@0 | 4537 | |
aoqi@0 | 4538 | // Map a block of memory. |
aoqi@0 | 4539 | char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset, |
aoqi@0 | 4540 | char *addr, size_t bytes, bool read_only, |
aoqi@0 | 4541 | bool allow_exec) { |
aoqi@0 | 4542 | HANDLE hFile; |
aoqi@0 | 4543 | char* base; |
aoqi@0 | 4544 | |
aoqi@0 | 4545 | hFile = CreateFile(file_name, GENERIC_READ, FILE_SHARE_READ, NULL, |
aoqi@0 | 4546 | OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
aoqi@0 | 4547 | if (hFile == NULL) { |
aoqi@0 | 4548 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 4549 | DWORD err = GetLastError(); |
aoqi@0 | 4550 | tty->print_cr("CreateFile() failed: GetLastError->%ld.", err); |
aoqi@0 | 4551 | } |
aoqi@0 | 4552 | return NULL; |
aoqi@0 | 4553 | } |
aoqi@0 | 4554 | |
aoqi@0 | 4555 | if (allow_exec) { |
aoqi@0 | 4556 | // CreateFileMapping/MapViewOfFileEx can't map executable memory |
aoqi@0 | 4557 | // unless it comes from a PE image (which the shared archive is not.) |
aoqi@0 | 4558 | // Even VirtualProtect refuses to give execute access to mapped memory |
aoqi@0 | 4559 | // that was not previously executable. |
aoqi@0 | 4560 | // |
aoqi@0 | 4561 | // Instead, stick the executable region in anonymous memory. Yuck. |
aoqi@0 | 4562 | // Penalty is that ~4 pages will not be shareable - in the future |
aoqi@0 | 4563 | // we might consider DLLizing the shared archive with a proper PE |
aoqi@0 | 4564 | // header so that mapping executable + sharing is possible. |
aoqi@0 | 4565 | |
aoqi@0 | 4566 | base = (char*) VirtualAlloc(addr, bytes, MEM_COMMIT | MEM_RESERVE, |
aoqi@0 | 4567 | PAGE_READWRITE); |
aoqi@0 | 4568 | if (base == NULL) { |
aoqi@0 | 4569 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 4570 | DWORD err = GetLastError(); |
aoqi@0 | 4571 | tty->print_cr("VirtualAlloc() failed: GetLastError->%ld.", err); |
aoqi@0 | 4572 | } |
aoqi@0 | 4573 | CloseHandle(hFile); |
aoqi@0 | 4574 | return NULL; |
aoqi@0 | 4575 | } |
aoqi@0 | 4576 | |
aoqi@0 | 4577 | DWORD bytes_read; |
aoqi@0 | 4578 | OVERLAPPED overlapped; |
aoqi@0 | 4579 | overlapped.Offset = (DWORD)file_offset; |
aoqi@0 | 4580 | overlapped.OffsetHigh = 0; |
aoqi@0 | 4581 | overlapped.hEvent = NULL; |
aoqi@0 | 4582 | // ReadFile guarantees that if the return value is true, the requested |
aoqi@0 | 4583 | // number of bytes were read before returning. |
aoqi@0 | 4584 | bool res = ReadFile(hFile, base, (DWORD)bytes, &bytes_read, &overlapped) != 0; |
aoqi@0 | 4585 | if (!res) { |
aoqi@0 | 4586 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 4587 | DWORD err = GetLastError(); |
aoqi@0 | 4588 | tty->print_cr("ReadFile() failed: GetLastError->%ld.", err); |
aoqi@0 | 4589 | } |
aoqi@0 | 4590 | release_memory(base, bytes); |
aoqi@0 | 4591 | CloseHandle(hFile); |
aoqi@0 | 4592 | return NULL; |
aoqi@0 | 4593 | } |
aoqi@0 | 4594 | } else { |
aoqi@0 | 4595 | HANDLE hMap = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, |
aoqi@0 | 4596 | NULL /*file_name*/); |
aoqi@0 | 4597 | if (hMap == NULL) { |
aoqi@0 | 4598 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 4599 | DWORD err = GetLastError(); |
aoqi@0 | 4600 | tty->print_cr("CreateFileMapping() failed: GetLastError->%ld.", err); |
aoqi@0 | 4601 | } |
aoqi@0 | 4602 | CloseHandle(hFile); |
aoqi@0 | 4603 | return NULL; |
aoqi@0 | 4604 | } |
aoqi@0 | 4605 | |
aoqi@0 | 4606 | DWORD access = read_only ? FILE_MAP_READ : FILE_MAP_COPY; |
aoqi@0 | 4607 | base = (char*)MapViewOfFileEx(hMap, access, 0, (DWORD)file_offset, |
aoqi@0 | 4608 | (DWORD)bytes, addr); |
aoqi@0 | 4609 | if (base == NULL) { |
aoqi@0 | 4610 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 4611 | DWORD err = GetLastError(); |
aoqi@0 | 4612 | tty->print_cr("MapViewOfFileEx() failed: GetLastError->%ld.", err); |
aoqi@0 | 4613 | } |
aoqi@0 | 4614 | CloseHandle(hMap); |
aoqi@0 | 4615 | CloseHandle(hFile); |
aoqi@0 | 4616 | return NULL; |
aoqi@0 | 4617 | } |
aoqi@0 | 4618 | |
aoqi@0 | 4619 | if (CloseHandle(hMap) == 0) { |
aoqi@0 | 4620 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 4621 | DWORD err = GetLastError(); |
aoqi@0 | 4622 | tty->print_cr("CloseHandle(hMap) failed: GetLastError->%ld.", err); |
aoqi@0 | 4623 | } |
aoqi@0 | 4624 | CloseHandle(hFile); |
aoqi@0 | 4625 | return base; |
aoqi@0 | 4626 | } |
aoqi@0 | 4627 | } |
aoqi@0 | 4628 | |
aoqi@0 | 4629 | if (allow_exec) { |
aoqi@0 | 4630 | DWORD old_protect; |
aoqi@0 | 4631 | DWORD exec_access = read_only ? PAGE_EXECUTE_READ : PAGE_EXECUTE_READWRITE; |
aoqi@0 | 4632 | bool res = VirtualProtect(base, bytes, exec_access, &old_protect) != 0; |
aoqi@0 | 4633 | |
aoqi@0 | 4634 | if (!res) { |
aoqi@0 | 4635 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 4636 | DWORD err = GetLastError(); |
aoqi@0 | 4637 | tty->print_cr("VirtualProtect() failed: GetLastError->%ld.", err); |
aoqi@0 | 4638 | } |
aoqi@0 | 4639 | // Don't consider this a hard error, on IA32 even if the |
aoqi@0 | 4640 | // VirtualProtect fails, we should still be able to execute |
aoqi@0 | 4641 | CloseHandle(hFile); |
aoqi@0 | 4642 | return base; |
aoqi@0 | 4643 | } |
aoqi@0 | 4644 | } |
aoqi@0 | 4645 | |
aoqi@0 | 4646 | if (CloseHandle(hFile) == 0) { |
aoqi@0 | 4647 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 4648 | DWORD err = GetLastError(); |
aoqi@0 | 4649 | tty->print_cr("CloseHandle(hFile) failed: GetLastError->%ld.", err); |
aoqi@0 | 4650 | } |
aoqi@0 | 4651 | return base; |
aoqi@0 | 4652 | } |
aoqi@0 | 4653 | |
aoqi@0 | 4654 | return base; |
aoqi@0 | 4655 | } |
aoqi@0 | 4656 | |
aoqi@0 | 4657 | |
aoqi@0 | 4658 | // Remap a block of memory. |
aoqi@0 | 4659 | char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset, |
aoqi@0 | 4660 | char *addr, size_t bytes, bool read_only, |
aoqi@0 | 4661 | bool allow_exec) { |
aoqi@0 | 4662 | // This OS does not allow existing memory maps to be remapped so we |
aoqi@0 | 4663 | // have to unmap the memory before we remap it. |
aoqi@0 | 4664 | if (!os::unmap_memory(addr, bytes)) { |
aoqi@0 | 4665 | return NULL; |
aoqi@0 | 4666 | } |
aoqi@0 | 4667 | |
aoqi@0 | 4668 | // There is a very small theoretical window between the unmap_memory() |
aoqi@0 | 4669 | // call above and the map_memory() call below where a thread in native |
aoqi@0 | 4670 | // code may be able to access an address that is no longer mapped. |
aoqi@0 | 4671 | |
aoqi@0 | 4672 | return os::map_memory(fd, file_name, file_offset, addr, bytes, |
aoqi@0 | 4673 | read_only, allow_exec); |
aoqi@0 | 4674 | } |
aoqi@0 | 4675 | |
aoqi@0 | 4676 | |
aoqi@0 | 4677 | // Unmap a block of memory. |
aoqi@0 | 4678 | // Returns true=success, otherwise false. |
aoqi@0 | 4679 | |
aoqi@0 | 4680 | bool os::pd_unmap_memory(char* addr, size_t bytes) { |
aoqi@0 | 4681 | BOOL result = UnmapViewOfFile(addr); |
aoqi@0 | 4682 | if (result == 0) { |
aoqi@0 | 4683 | if (PrintMiscellaneous && Verbose) { |
aoqi@0 | 4684 | DWORD err = GetLastError(); |
aoqi@0 | 4685 | tty->print_cr("UnmapViewOfFile() failed: GetLastError->%ld.", err); |
aoqi@0 | 4686 | } |
aoqi@0 | 4687 | return false; |
aoqi@0 | 4688 | } |
aoqi@0 | 4689 | return true; |
aoqi@0 | 4690 | } |
aoqi@0 | 4691 | |
aoqi@0 | 4692 | void os::pause() { |
aoqi@0 | 4693 | char filename[MAX_PATH]; |
aoqi@0 | 4694 | if (PauseAtStartupFile && PauseAtStartupFile[0]) { |
aoqi@0 | 4695 | jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); |
aoqi@0 | 4696 | } else { |
aoqi@0 | 4697 | jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); |
aoqi@0 | 4698 | } |
aoqi@0 | 4699 | |
aoqi@0 | 4700 | int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); |
aoqi@0 | 4701 | if (fd != -1) { |
aoqi@0 | 4702 | struct stat buf; |
aoqi@0 | 4703 | ::close(fd); |
aoqi@0 | 4704 | while (::stat(filename, &buf) == 0) { |
aoqi@0 | 4705 | Sleep(100); |
aoqi@0 | 4706 | } |
aoqi@0 | 4707 | } else { |
aoqi@0 | 4708 | jio_fprintf(stderr, |
aoqi@0 | 4709 | "Could not open pause file '%s', continuing immediately.\n", filename); |
aoqi@0 | 4710 | } |
aoqi@0 | 4711 | } |
aoqi@0 | 4712 | |
aoqi@0 | 4713 | os::WatcherThreadCrashProtection::WatcherThreadCrashProtection() { |
aoqi@0 | 4714 | assert(Thread::current()->is_Watcher_thread(), "Must be WatcherThread"); |
aoqi@0 | 4715 | } |
aoqi@0 | 4716 | |
aoqi@0 | 4717 | /* |
aoqi@0 | 4718 | * See the caveats for this class in os_windows.hpp |
aoqi@0 | 4719 | * Protects the callback call so that raised OS EXCEPTIONS causes a jump back |
aoqi@0 | 4720 | * into this method and returns false. If no OS EXCEPTION was raised, returns |
aoqi@0 | 4721 | * true. |
aoqi@0 | 4722 | * The callback is supposed to provide the method that should be protected. |
aoqi@0 | 4723 | */ |
aoqi@0 | 4724 | bool os::WatcherThreadCrashProtection::call(os::CrashProtectionCallback& cb) { |
aoqi@0 | 4725 | assert(Thread::current()->is_Watcher_thread(), "Only for WatcherThread"); |
aoqi@0 | 4726 | assert(!WatcherThread::watcher_thread()->has_crash_protection(), |
aoqi@0 | 4727 | "crash_protection already set?"); |
aoqi@0 | 4728 | |
aoqi@0 | 4729 | bool success = true; |
aoqi@0 | 4730 | __try { |
aoqi@0 | 4731 | WatcherThread::watcher_thread()->set_crash_protection(this); |
aoqi@0 | 4732 | cb.call(); |
aoqi@0 | 4733 | } __except(EXCEPTION_EXECUTE_HANDLER) { |
aoqi@0 | 4734 | // only for protection, nothing to do |
aoqi@0 | 4735 | success = false; |
aoqi@0 | 4736 | } |
aoqi@0 | 4737 | WatcherThread::watcher_thread()->set_crash_protection(NULL); |
aoqi@0 | 4738 | return success; |
aoqi@0 | 4739 | } |
aoqi@0 | 4740 | |
aoqi@0 | 4741 | // An Event wraps a win32 "CreateEvent" kernel handle. |
aoqi@0 | 4742 | // |
aoqi@0 | 4743 | // We have a number of choices regarding "CreateEvent" win32 handle leakage: |
aoqi@0 | 4744 | // |
aoqi@0 | 4745 | // 1: When a thread dies return the Event to the EventFreeList, clear the ParkHandle |
aoqi@0 | 4746 | // field, and call CloseHandle() on the win32 event handle. Unpark() would |
aoqi@0 | 4747 | // need to be modified to tolerate finding a NULL (invalid) win32 event handle. |
aoqi@0 | 4748 | // In addition, an unpark() operation might fetch the handle field, but the |
aoqi@0 | 4749 | // event could recycle between the fetch and the SetEvent() operation. |
aoqi@0 | 4750 | // SetEvent() would either fail because the handle was invalid, or inadvertently work, |
aoqi@0 | 4751 | // as the win32 handle value had been recycled. In an ideal world calling SetEvent() |
aoqi@0 | 4752 | // on an stale but recycled handle would be harmless, but in practice this might |
aoqi@0 | 4753 | // confuse other non-Sun code, so it's not a viable approach. |
aoqi@0 | 4754 | // |
aoqi@0 | 4755 | // 2: Once a win32 event handle is associated with an Event, it remains associated |
aoqi@0 | 4756 | // with the Event. The event handle is never closed. This could be construed |
aoqi@0 | 4757 | // as handle leakage, but only up to the maximum # of threads that have been extant |
aoqi@0 | 4758 | // at any one time. This shouldn't be an issue, as windows platforms typically |
aoqi@0 | 4759 | // permit a process to have hundreds of thousands of open handles. |
aoqi@0 | 4760 | // |
aoqi@0 | 4761 | // 3: Same as (1), but periodically, at stop-the-world time, rundown the EventFreeList |
aoqi@0 | 4762 | // and release unused handles. |
aoqi@0 | 4763 | // |
aoqi@0 | 4764 | // 4: Add a CRITICAL_SECTION to the Event to protect LD+SetEvent from LD;ST(null);CloseHandle. |
aoqi@0 | 4765 | // It's not clear, however, that we wouldn't be trading one type of leak for another. |
aoqi@0 | 4766 | // |
aoqi@0 | 4767 | // 5. Use an RCU-like mechanism (Read-Copy Update). |
aoqi@0 | 4768 | // Or perhaps something similar to Maged Michael's "Hazard pointers". |
aoqi@0 | 4769 | // |
aoqi@0 | 4770 | // We use (2). |
aoqi@0 | 4771 | // |
aoqi@0 | 4772 | // TODO-FIXME: |
aoqi@0 | 4773 | // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the objectmonitor implementation. |
aoqi@0 | 4774 | // 2. Consider wrapping the WaitForSingleObject(Ex) calls in SEH try/finally blocks |
aoqi@0 | 4775 | // to recover from (or at least detect) the dreaded Windows 841176 bug. |
aoqi@0 | 4776 | // 3. Collapse the interrupt_event, the JSR166 parker event, and the objectmonitor ParkEvent |
aoqi@0 | 4777 | // into a single win32 CreateEvent() handle. |
aoqi@0 | 4778 | // |
aoqi@0 | 4779 | // _Event transitions in park() |
aoqi@0 | 4780 | // -1 => -1 : illegal |
aoqi@0 | 4781 | // 1 => 0 : pass - return immediately |
aoqi@0 | 4782 | // 0 => -1 : block |
aoqi@0 | 4783 | // |
aoqi@0 | 4784 | // _Event serves as a restricted-range semaphore : |
aoqi@0 | 4785 | // -1 : thread is blocked |
aoqi@0 | 4786 | // 0 : neutral - thread is running or ready |
aoqi@0 | 4787 | // 1 : signaled - thread is running or ready |
aoqi@0 | 4788 | // |
aoqi@0 | 4789 | // Another possible encoding of _Event would be |
aoqi@0 | 4790 | // with explicit "PARKED" and "SIGNALED" bits. |
aoqi@0 | 4791 | |
aoqi@0 | 4792 | int os::PlatformEvent::park (jlong Millis) { |
aoqi@0 | 4793 | guarantee (_ParkHandle != NULL , "Invariant") ; |
aoqi@0 | 4794 | guarantee (Millis > 0 , "Invariant") ; |
aoqi@0 | 4795 | int v ; |
aoqi@0 | 4796 | |
aoqi@0 | 4797 | // CONSIDER: defer assigning a CreateEvent() handle to the Event until |
aoqi@0 | 4798 | // the initial park() operation. |
aoqi@0 | 4799 | |
aoqi@0 | 4800 | for (;;) { |
aoqi@0 | 4801 | v = _Event ; |
aoqi@0 | 4802 | if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; |
aoqi@0 | 4803 | } |
aoqi@0 | 4804 | guarantee ((v == 0) || (v == 1), "invariant") ; |
aoqi@0 | 4805 | if (v != 0) return OS_OK ; |
aoqi@0 | 4806 | |
aoqi@0 | 4807 | // Do this the hard way by blocking ... |
aoqi@0 | 4808 | // TODO: consider a brief spin here, gated on the success of recent |
aoqi@0 | 4809 | // spin attempts by this thread. |
aoqi@0 | 4810 | // |
aoqi@0 | 4811 | // We decompose long timeouts into series of shorter timed waits. |
aoqi@0 | 4812 | // Evidently large timo values passed in WaitForSingleObject() are problematic on some |
aoqi@0 | 4813 | // versions of Windows. See EventWait() for details. This may be superstition. Or not. |
aoqi@0 | 4814 | // We trust the WAIT_TIMEOUT indication and don't track the elapsed wait time |
aoqi@0 | 4815 | // with os::javaTimeNanos(). Furthermore, we assume that spurious returns from |
aoqi@0 | 4816 | // ::WaitForSingleObject() caused by latent ::setEvent() operations will tend |
aoqi@0 | 4817 | // to happen early in the wait interval. Specifically, after a spurious wakeup (rv == |
aoqi@0 | 4818 | // WAIT_OBJECT_0 but _Event is still < 0) we don't bother to recompute Millis to compensate |
aoqi@0 | 4819 | // for the already waited time. This policy does not admit any new outcomes. |
aoqi@0 | 4820 | // In the future, however, we might want to track the accumulated wait time and |
aoqi@0 | 4821 | // adjust Millis accordingly if we encounter a spurious wakeup. |
aoqi@0 | 4822 | |
aoqi@0 | 4823 | const int MAXTIMEOUT = 0x10000000 ; |
aoqi@0 | 4824 | DWORD rv = WAIT_TIMEOUT ; |
aoqi@0 | 4825 | while (_Event < 0 && Millis > 0) { |
aoqi@0 | 4826 | DWORD prd = Millis ; // set prd = MAX (Millis, MAXTIMEOUT) |
aoqi@0 | 4827 | if (Millis > MAXTIMEOUT) { |
aoqi@0 | 4828 | prd = MAXTIMEOUT ; |
aoqi@0 | 4829 | } |
aoqi@0 | 4830 | rv = ::WaitForSingleObject (_ParkHandle, prd) ; |
aoqi@0 | 4831 | assert (rv == WAIT_OBJECT_0 || rv == WAIT_TIMEOUT, "WaitForSingleObject failed") ; |
aoqi@0 | 4832 | if (rv == WAIT_TIMEOUT) { |
aoqi@0 | 4833 | Millis -= prd ; |
aoqi@0 | 4834 | } |
aoqi@0 | 4835 | } |
aoqi@0 | 4836 | v = _Event ; |
aoqi@0 | 4837 | _Event = 0 ; |
aoqi@0 | 4838 | // see comment at end of os::PlatformEvent::park() below: |
aoqi@0 | 4839 | OrderAccess::fence() ; |
aoqi@0 | 4840 | // If we encounter a nearly simultanous timeout expiry and unpark() |
aoqi@0 | 4841 | // we return OS_OK indicating we awoke via unpark(). |
aoqi@0 | 4842 | // Implementor's license -- returning OS_TIMEOUT would be equally valid, however. |
aoqi@0 | 4843 | return (v >= 0) ? OS_OK : OS_TIMEOUT ; |
aoqi@0 | 4844 | } |
aoqi@0 | 4845 | |
aoqi@0 | 4846 | void os::PlatformEvent::park () { |
aoqi@0 | 4847 | guarantee (_ParkHandle != NULL, "Invariant") ; |
aoqi@0 | 4848 | // Invariant: Only the thread associated with the Event/PlatformEvent |
aoqi@0 | 4849 | // may call park(). |
aoqi@0 | 4850 | int v ; |
aoqi@0 | 4851 | for (;;) { |
aoqi@0 | 4852 | v = _Event ; |
aoqi@0 | 4853 | if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; |
aoqi@0 | 4854 | } |
aoqi@0 | 4855 | guarantee ((v == 0) || (v == 1), "invariant") ; |
aoqi@0 | 4856 | if (v != 0) return ; |
aoqi@0 | 4857 | |
aoqi@0 | 4858 | // Do this the hard way by blocking ... |
aoqi@0 | 4859 | // TODO: consider a brief spin here, gated on the success of recent |
aoqi@0 | 4860 | // spin attempts by this thread. |
aoqi@0 | 4861 | while (_Event < 0) { |
aoqi@0 | 4862 | DWORD rv = ::WaitForSingleObject (_ParkHandle, INFINITE) ; |
aoqi@0 | 4863 | assert (rv == WAIT_OBJECT_0, "WaitForSingleObject failed") ; |
aoqi@0 | 4864 | } |
aoqi@0 | 4865 | |
aoqi@0 | 4866 | // Usually we'll find _Event == 0 at this point, but as |
aoqi@0 | 4867 | // an optional optimization we clear it, just in case can |
aoqi@0 | 4868 | // multiple unpark() operations drove _Event up to 1. |
aoqi@0 | 4869 | _Event = 0 ; |
aoqi@0 | 4870 | OrderAccess::fence() ; |
aoqi@0 | 4871 | guarantee (_Event >= 0, "invariant") ; |
aoqi@0 | 4872 | } |
aoqi@0 | 4873 | |
aoqi@0 | 4874 | void os::PlatformEvent::unpark() { |
aoqi@0 | 4875 | guarantee (_ParkHandle != NULL, "Invariant") ; |
aoqi@0 | 4876 | |
aoqi@0 | 4877 | // Transitions for _Event: |
aoqi@0 | 4878 | // 0 :=> 1 |
aoqi@0 | 4879 | // 1 :=> 1 |
aoqi@0 | 4880 | // -1 :=> either 0 or 1; must signal target thread |
aoqi@0 | 4881 | // That is, we can safely transition _Event from -1 to either |
aoqi@0 | 4882 | // 0 or 1. Forcing 1 is slightly more efficient for back-to-back |
aoqi@0 | 4883 | // unpark() calls. |
aoqi@0 | 4884 | // See also: "Semaphores in Plan 9" by Mullender & Cox |
aoqi@0 | 4885 | // |
aoqi@0 | 4886 | // Note: Forcing a transition from "-1" to "1" on an unpark() means |
aoqi@0 | 4887 | // that it will take two back-to-back park() calls for the owning |
aoqi@0 | 4888 | // thread to block. This has the benefit of forcing a spurious return |
aoqi@0 | 4889 | // from the first park() call after an unpark() call which will help |
aoqi@0 | 4890 | // shake out uses of park() and unpark() without condition variables. |
aoqi@0 | 4891 | |
aoqi@0 | 4892 | if (Atomic::xchg(1, &_Event) >= 0) return; |
aoqi@0 | 4893 | |
aoqi@0 | 4894 | ::SetEvent(_ParkHandle); |
aoqi@0 | 4895 | } |
aoqi@0 | 4896 | |
aoqi@0 | 4897 | |
aoqi@0 | 4898 | // JSR166 |
aoqi@0 | 4899 | // ------------------------------------------------------- |
aoqi@0 | 4900 | |
aoqi@0 | 4901 | /* |
aoqi@0 | 4902 | * The Windows implementation of Park is very straightforward: Basic |
aoqi@0 | 4903 | * operations on Win32 Events turn out to have the right semantics to |
aoqi@0 | 4904 | * use them directly. We opportunistically resuse the event inherited |
aoqi@0 | 4905 | * from Monitor. |
aoqi@0 | 4906 | */ |
aoqi@0 | 4907 | |
aoqi@0 | 4908 | |
aoqi@0 | 4909 | void Parker::park(bool isAbsolute, jlong time) { |
aoqi@0 | 4910 | guarantee (_ParkEvent != NULL, "invariant") ; |
aoqi@0 | 4911 | // First, demultiplex/decode time arguments |
aoqi@0 | 4912 | if (time < 0) { // don't wait |
aoqi@0 | 4913 | return; |
aoqi@0 | 4914 | } |
aoqi@0 | 4915 | else if (time == 0 && !isAbsolute) { |
aoqi@0 | 4916 | time = INFINITE; |
aoqi@0 | 4917 | } |
aoqi@0 | 4918 | else if (isAbsolute) { |
aoqi@0 | 4919 | time -= os::javaTimeMillis(); // convert to relative time |
aoqi@0 | 4920 | if (time <= 0) // already elapsed |
aoqi@0 | 4921 | return; |
aoqi@0 | 4922 | } |
aoqi@0 | 4923 | else { // relative |
aoqi@0 | 4924 | time /= 1000000; // Must coarsen from nanos to millis |
aoqi@0 | 4925 | if (time == 0) // Wait for the minimal time unit if zero |
aoqi@0 | 4926 | time = 1; |
aoqi@0 | 4927 | } |
aoqi@0 | 4928 | |
aoqi@0 | 4929 | JavaThread* thread = (JavaThread*)(Thread::current()); |
aoqi@0 | 4930 | assert(thread->is_Java_thread(), "Must be JavaThread"); |
aoqi@0 | 4931 | JavaThread *jt = (JavaThread *)thread; |
aoqi@0 | 4932 | |
aoqi@0 | 4933 | // Don't wait if interrupted or already triggered |
aoqi@0 | 4934 | if (Thread::is_interrupted(thread, false) || |
aoqi@0 | 4935 | WaitForSingleObject(_ParkEvent, 0) == WAIT_OBJECT_0) { |
aoqi@0 | 4936 | ResetEvent(_ParkEvent); |
aoqi@0 | 4937 | return; |
aoqi@0 | 4938 | } |
aoqi@0 | 4939 | else { |
aoqi@0 | 4940 | ThreadBlockInVM tbivm(jt); |
aoqi@0 | 4941 | OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); |
aoqi@0 | 4942 | jt->set_suspend_equivalent(); |
aoqi@0 | 4943 | |
aoqi@0 | 4944 | WaitForSingleObject(_ParkEvent, time); |
aoqi@0 | 4945 | ResetEvent(_ParkEvent); |
aoqi@0 | 4946 | |
aoqi@0 | 4947 | // If externally suspended while waiting, re-suspend |
aoqi@0 | 4948 | if (jt->handle_special_suspend_equivalent_condition()) { |
aoqi@0 | 4949 | jt->java_suspend_self(); |
aoqi@0 | 4950 | } |
aoqi@0 | 4951 | } |
aoqi@0 | 4952 | } |
aoqi@0 | 4953 | |
aoqi@0 | 4954 | void Parker::unpark() { |
aoqi@0 | 4955 | guarantee (_ParkEvent != NULL, "invariant") ; |
aoqi@0 | 4956 | SetEvent(_ParkEvent); |
aoqi@0 | 4957 | } |
aoqi@0 | 4958 | |
aoqi@0 | 4959 | // Run the specified command in a separate process. Return its exit value, |
aoqi@0 | 4960 | // or -1 on failure (e.g. can't create a new process). |
aoqi@0 | 4961 | int os::fork_and_exec(char* cmd) { |
aoqi@0 | 4962 | STARTUPINFO si; |
aoqi@0 | 4963 | PROCESS_INFORMATION pi; |
aoqi@0 | 4964 | |
aoqi@0 | 4965 | memset(&si, 0, sizeof(si)); |
aoqi@0 | 4966 | si.cb = sizeof(si); |
aoqi@0 | 4967 | memset(&pi, 0, sizeof(pi)); |
aoqi@0 | 4968 | BOOL rslt = CreateProcess(NULL, // executable name - use command line |
aoqi@0 | 4969 | cmd, // command line |
aoqi@0 | 4970 | NULL, // process security attribute |
aoqi@0 | 4971 | NULL, // thread security attribute |
aoqi@0 | 4972 | TRUE, // inherits system handles |
aoqi@0 | 4973 | 0, // no creation flags |
aoqi@0 | 4974 | NULL, // use parent's environment block |
aoqi@0 | 4975 | NULL, // use parent's starting directory |
aoqi@0 | 4976 | &si, // (in) startup information |
aoqi@0 | 4977 | &pi); // (out) process information |
aoqi@0 | 4978 | |
aoqi@0 | 4979 | if (rslt) { |
aoqi@0 | 4980 | // Wait until child process exits. |
aoqi@0 | 4981 | WaitForSingleObject(pi.hProcess, INFINITE); |
aoqi@0 | 4982 | |
aoqi@0 | 4983 | DWORD exit_code; |
aoqi@0 | 4984 | GetExitCodeProcess(pi.hProcess, &exit_code); |
aoqi@0 | 4985 | |
aoqi@0 | 4986 | // Close process and thread handles. |
aoqi@0 | 4987 | CloseHandle(pi.hProcess); |
aoqi@0 | 4988 | CloseHandle(pi.hThread); |
aoqi@0 | 4989 | |
aoqi@0 | 4990 | return (int)exit_code; |
aoqi@0 | 4991 | } else { |
aoqi@0 | 4992 | return -1; |
aoqi@0 | 4993 | } |
aoqi@0 | 4994 | } |
aoqi@0 | 4995 | |
aoqi@0 | 4996 | //-------------------------------------------------------------------------------------------------- |
aoqi@0 | 4997 | // Non-product code |
aoqi@0 | 4998 | |
aoqi@0 | 4999 | static int mallocDebugIntervalCounter = 0; |
aoqi@0 | 5000 | static int mallocDebugCounter = 0; |
aoqi@0 | 5001 | bool os::check_heap(bool force) { |
aoqi@0 | 5002 | if (++mallocDebugCounter < MallocVerifyStart && !force) return true; |
aoqi@0 | 5003 | if (++mallocDebugIntervalCounter >= MallocVerifyInterval || force) { |
aoqi@0 | 5004 | // Note: HeapValidate executes two hardware breakpoints when it finds something |
aoqi@0 | 5005 | // wrong; at these points, eax contains the address of the offending block (I think). |
aoqi@0 | 5006 | // To get to the exlicit error message(s) below, just continue twice. |
aoqi@0 | 5007 | HANDLE heap = GetProcessHeap(); |
aoqi@0 | 5008 | { HeapLock(heap); |
aoqi@0 | 5009 | PROCESS_HEAP_ENTRY phe; |
aoqi@0 | 5010 | phe.lpData = NULL; |
aoqi@0 | 5011 | while (HeapWalk(heap, &phe) != 0) { |
aoqi@0 | 5012 | if ((phe.wFlags & PROCESS_HEAP_ENTRY_BUSY) && |
aoqi@0 | 5013 | !HeapValidate(heap, 0, phe.lpData)) { |
aoqi@0 | 5014 | tty->print_cr("C heap has been corrupted (time: %d allocations)", mallocDebugCounter); |
aoqi@0 | 5015 | tty->print_cr("corrupted block near address %#x, length %d", phe.lpData, phe.cbData); |
aoqi@0 | 5016 | fatal("corrupted C heap"); |
aoqi@0 | 5017 | } |
aoqi@0 | 5018 | } |
aoqi@0 | 5019 | DWORD err = GetLastError(); |
aoqi@0 | 5020 | if (err != ERROR_NO_MORE_ITEMS && err != ERROR_CALL_NOT_IMPLEMENTED) { |
aoqi@0 | 5021 | fatal(err_msg("heap walk aborted with error %d", err)); |
aoqi@0 | 5022 | } |
aoqi@0 | 5023 | HeapUnlock(heap); |
aoqi@0 | 5024 | } |
aoqi@0 | 5025 | mallocDebugIntervalCounter = 0; |
aoqi@0 | 5026 | } |
aoqi@0 | 5027 | return true; |
aoqi@0 | 5028 | } |
aoqi@0 | 5029 | |
aoqi@0 | 5030 | |
aoqi@0 | 5031 | bool os::find(address addr, outputStream* st) { |
aoqi@0 | 5032 | // Nothing yet |
aoqi@0 | 5033 | return false; |
aoqi@0 | 5034 | } |
aoqi@0 | 5035 | |
aoqi@0 | 5036 | LONG WINAPI os::win32::serialize_fault_filter(struct _EXCEPTION_POINTERS* e) { |
aoqi@0 | 5037 | DWORD exception_code = e->ExceptionRecord->ExceptionCode; |
aoqi@0 | 5038 | |
aoqi@0 | 5039 | if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) { |
aoqi@0 | 5040 | JavaThread* thread = (JavaThread*)ThreadLocalStorage::get_thread_slow(); |
aoqi@0 | 5041 | PEXCEPTION_RECORD exceptionRecord = e->ExceptionRecord; |
aoqi@0 | 5042 | address addr = (address) exceptionRecord->ExceptionInformation[1]; |
aoqi@0 | 5043 | |
aoqi@0 | 5044 | if (os::is_memory_serialize_page(thread, addr)) |
aoqi@0 | 5045 | return EXCEPTION_CONTINUE_EXECUTION; |
aoqi@0 | 5046 | } |
aoqi@0 | 5047 | |
aoqi@0 | 5048 | return EXCEPTION_CONTINUE_SEARCH; |
aoqi@0 | 5049 | } |
aoqi@0 | 5050 | |
aoqi@0 | 5051 | // We don't build a headless jre for Windows |
aoqi@0 | 5052 | bool os::is_headless_jre() { return false; } |
aoqi@0 | 5053 | |
aoqi@0 | 5054 | static jint initSock() { |
aoqi@0 | 5055 | WSADATA wsadata; |
aoqi@0 | 5056 | |
aoqi@0 | 5057 | if (!os::WinSock2Dll::WinSock2Available()) { |
aoqi@0 | 5058 | jio_fprintf(stderr, "Could not load Winsock (error: %d)\n", |
aoqi@0 | 5059 | ::GetLastError()); |
aoqi@0 | 5060 | return JNI_ERR; |
aoqi@0 | 5061 | } |
aoqi@0 | 5062 | |
aoqi@0 | 5063 | if (os::WinSock2Dll::WSAStartup(MAKEWORD(2,2), &wsadata) != 0) { |
aoqi@0 | 5064 | jio_fprintf(stderr, "Could not initialize Winsock (error: %d)\n", |
aoqi@0 | 5065 | ::GetLastError()); |
aoqi@0 | 5066 | return JNI_ERR; |
aoqi@0 | 5067 | } |
aoqi@0 | 5068 | return JNI_OK; |
aoqi@0 | 5069 | } |
aoqi@0 | 5070 | |
aoqi@0 | 5071 | struct hostent* os::get_host_by_name(char* name) { |
aoqi@0 | 5072 | return (struct hostent*)os::WinSock2Dll::gethostbyname(name); |
aoqi@0 | 5073 | } |
aoqi@0 | 5074 | |
aoqi@0 | 5075 | int os::socket_close(int fd) { |
aoqi@0 | 5076 | return ::closesocket(fd); |
aoqi@0 | 5077 | } |
aoqi@0 | 5078 | |
aoqi@0 | 5079 | int os::socket_available(int fd, jint *pbytes) { |
aoqi@0 | 5080 | int ret = ::ioctlsocket(fd, FIONREAD, (u_long*)pbytes); |
aoqi@0 | 5081 | return (ret < 0) ? 0 : 1; |
aoqi@0 | 5082 | } |
aoqi@0 | 5083 | |
aoqi@0 | 5084 | int os::socket(int domain, int type, int protocol) { |
aoqi@0 | 5085 | return ::socket(domain, type, protocol); |
aoqi@0 | 5086 | } |
aoqi@0 | 5087 | |
aoqi@0 | 5088 | int os::listen(int fd, int count) { |
aoqi@0 | 5089 | return ::listen(fd, count); |
aoqi@0 | 5090 | } |
aoqi@0 | 5091 | |
aoqi@0 | 5092 | int os::connect(int fd, struct sockaddr* him, socklen_t len) { |
aoqi@0 | 5093 | return ::connect(fd, him, len); |
aoqi@0 | 5094 | } |
aoqi@0 | 5095 | |
aoqi@0 | 5096 | int os::accept(int fd, struct sockaddr* him, socklen_t* len) { |
aoqi@0 | 5097 | return ::accept(fd, him, len); |
aoqi@0 | 5098 | } |
aoqi@0 | 5099 | |
aoqi@0 | 5100 | int os::sendto(int fd, char* buf, size_t len, uint flags, |
aoqi@0 | 5101 | struct sockaddr* to, socklen_t tolen) { |
aoqi@0 | 5102 | |
aoqi@0 | 5103 | return ::sendto(fd, buf, (int)len, flags, to, tolen); |
aoqi@0 | 5104 | } |
aoqi@0 | 5105 | |
aoqi@0 | 5106 | int os::recvfrom(int fd, char *buf, size_t nBytes, uint flags, |
aoqi@0 | 5107 | sockaddr* from, socklen_t* fromlen) { |
aoqi@0 | 5108 | |
aoqi@0 | 5109 | return ::recvfrom(fd, buf, (int)nBytes, flags, from, fromlen); |
aoqi@0 | 5110 | } |
aoqi@0 | 5111 | |
aoqi@0 | 5112 | int os::recv(int fd, char* buf, size_t nBytes, uint flags) { |
aoqi@0 | 5113 | return ::recv(fd, buf, (int)nBytes, flags); |
aoqi@0 | 5114 | } |
aoqi@0 | 5115 | |
aoqi@0 | 5116 | int os::send(int fd, char* buf, size_t nBytes, uint flags) { |
aoqi@0 | 5117 | return ::send(fd, buf, (int)nBytes, flags); |
aoqi@0 | 5118 | } |
aoqi@0 | 5119 | |
aoqi@0 | 5120 | int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) { |
aoqi@0 | 5121 | return ::send(fd, buf, (int)nBytes, flags); |
aoqi@0 | 5122 | } |
aoqi@0 | 5123 | |
aoqi@0 | 5124 | int os::timeout(int fd, long timeout) { |
aoqi@0 | 5125 | fd_set tbl; |
aoqi@0 | 5126 | struct timeval t; |
aoqi@0 | 5127 | |
aoqi@0 | 5128 | t.tv_sec = timeout / 1000; |
aoqi@0 | 5129 | t.tv_usec = (timeout % 1000) * 1000; |
aoqi@0 | 5130 | |
aoqi@0 | 5131 | tbl.fd_count = 1; |
aoqi@0 | 5132 | tbl.fd_array[0] = fd; |
aoqi@0 | 5133 | |
aoqi@0 | 5134 | return ::select(1, &tbl, 0, 0, &t); |
aoqi@0 | 5135 | } |
aoqi@0 | 5136 | |
aoqi@0 | 5137 | int os::get_host_name(char* name, int namelen) { |
aoqi@0 | 5138 | return ::gethostname(name, namelen); |
aoqi@0 | 5139 | } |
aoqi@0 | 5140 | |
aoqi@0 | 5141 | int os::socket_shutdown(int fd, int howto) { |
aoqi@0 | 5142 | return ::shutdown(fd, howto); |
aoqi@0 | 5143 | } |
aoqi@0 | 5144 | |
aoqi@0 | 5145 | int os::bind(int fd, struct sockaddr* him, socklen_t len) { |
aoqi@0 | 5146 | return ::bind(fd, him, len); |
aoqi@0 | 5147 | } |
aoqi@0 | 5148 | |
aoqi@0 | 5149 | int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) { |
aoqi@0 | 5150 | return ::getsockname(fd, him, len); |
aoqi@0 | 5151 | } |
aoqi@0 | 5152 | |
aoqi@0 | 5153 | int os::get_sock_opt(int fd, int level, int optname, |
aoqi@0 | 5154 | char* optval, socklen_t* optlen) { |
aoqi@0 | 5155 | return ::getsockopt(fd, level, optname, optval, optlen); |
aoqi@0 | 5156 | } |
aoqi@0 | 5157 | |
aoqi@0 | 5158 | int os::set_sock_opt(int fd, int level, int optname, |
aoqi@0 | 5159 | const char* optval, socklen_t optlen) { |
aoqi@0 | 5160 | return ::setsockopt(fd, level, optname, optval, optlen); |
aoqi@0 | 5161 | } |
aoqi@0 | 5162 | |
aoqi@0 | 5163 | // WINDOWS CONTEXT Flags for THREAD_SAMPLING |
aoqi@0 | 5164 | #if defined(IA32) |
aoqi@0 | 5165 | # define sampling_context_flags (CONTEXT_FULL | CONTEXT_FLOATING_POINT | CONTEXT_EXTENDED_REGISTERS) |
aoqi@0 | 5166 | #elif defined (AMD64) |
aoqi@0 | 5167 | # define sampling_context_flags (CONTEXT_FULL | CONTEXT_FLOATING_POINT) |
aoqi@0 | 5168 | #endif |
aoqi@0 | 5169 | |
aoqi@0 | 5170 | // returns true if thread could be suspended, |
aoqi@0 | 5171 | // false otherwise |
aoqi@0 | 5172 | static bool do_suspend(HANDLE* h) { |
aoqi@0 | 5173 | if (h != NULL) { |
aoqi@0 | 5174 | if (SuspendThread(*h) != ~0) { |
aoqi@0 | 5175 | return true; |
aoqi@0 | 5176 | } |
aoqi@0 | 5177 | } |
aoqi@0 | 5178 | return false; |
aoqi@0 | 5179 | } |
aoqi@0 | 5180 | |
aoqi@0 | 5181 | // resume the thread |
aoqi@0 | 5182 | // calling resume on an active thread is a no-op |
aoqi@0 | 5183 | static void do_resume(HANDLE* h) { |
aoqi@0 | 5184 | if (h != NULL) { |
aoqi@0 | 5185 | ResumeThread(*h); |
aoqi@0 | 5186 | } |
aoqi@0 | 5187 | } |
aoqi@0 | 5188 | |
aoqi@0 | 5189 | // retrieve a suspend/resume context capable handle |
aoqi@0 | 5190 | // from the tid. Caller validates handle return value. |
aoqi@0 | 5191 | void get_thread_handle_for_extended_context(HANDLE* h, OSThread::thread_id_t tid) { |
aoqi@0 | 5192 | if (h != NULL) { |
aoqi@0 | 5193 | *h = OpenThread(THREAD_SUSPEND_RESUME | THREAD_GET_CONTEXT | THREAD_QUERY_INFORMATION, FALSE, tid); |
aoqi@0 | 5194 | } |
aoqi@0 | 5195 | } |
aoqi@0 | 5196 | |
aoqi@0 | 5197 | // |
aoqi@0 | 5198 | // Thread sampling implementation |
aoqi@0 | 5199 | // |
aoqi@0 | 5200 | void os::SuspendedThreadTask::internal_do_task() { |
aoqi@0 | 5201 | CONTEXT ctxt; |
aoqi@0 | 5202 | HANDLE h = NULL; |
aoqi@0 | 5203 | |
aoqi@0 | 5204 | // get context capable handle for thread |
aoqi@0 | 5205 | get_thread_handle_for_extended_context(&h, _thread->osthread()->thread_id()); |
aoqi@0 | 5206 | |
aoqi@0 | 5207 | // sanity |
aoqi@0 | 5208 | if (h == NULL || h == INVALID_HANDLE_VALUE) { |
aoqi@0 | 5209 | return; |
aoqi@0 | 5210 | } |
aoqi@0 | 5211 | |
aoqi@0 | 5212 | // suspend the thread |
aoqi@0 | 5213 | if (do_suspend(&h)) { |
aoqi@0 | 5214 | ctxt.ContextFlags = sampling_context_flags; |
aoqi@0 | 5215 | // get thread context |
aoqi@0 | 5216 | GetThreadContext(h, &ctxt); |
aoqi@0 | 5217 | SuspendedThreadTaskContext context(_thread, &ctxt); |
aoqi@0 | 5218 | // pass context to Thread Sampling impl |
aoqi@0 | 5219 | do_task(context); |
aoqi@0 | 5220 | // resume thread |
aoqi@0 | 5221 | do_resume(&h); |
aoqi@0 | 5222 | } |
aoqi@0 | 5223 | |
aoqi@0 | 5224 | // close handle |
aoqi@0 | 5225 | CloseHandle(h); |
aoqi@0 | 5226 | } |
aoqi@0 | 5227 | |
aoqi@0 | 5228 | |
aoqi@0 | 5229 | // Kernel32 API |
aoqi@0 | 5230 | typedef SIZE_T (WINAPI* GetLargePageMinimum_Fn)(void); |
aoqi@0 | 5231 | typedef LPVOID (WINAPI *VirtualAllocExNuma_Fn) (HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD); |
aoqi@0 | 5232 | typedef BOOL (WINAPI *GetNumaHighestNodeNumber_Fn) (PULONG); |
aoqi@0 | 5233 | typedef BOOL (WINAPI *GetNumaNodeProcessorMask_Fn) (UCHAR, PULONGLONG); |
aoqi@0 | 5234 | typedef USHORT (WINAPI* RtlCaptureStackBackTrace_Fn)(ULONG, ULONG, PVOID*, PULONG); |
aoqi@0 | 5235 | |
aoqi@0 | 5236 | GetLargePageMinimum_Fn os::Kernel32Dll::_GetLargePageMinimum = NULL; |
aoqi@0 | 5237 | VirtualAllocExNuma_Fn os::Kernel32Dll::_VirtualAllocExNuma = NULL; |
aoqi@0 | 5238 | GetNumaHighestNodeNumber_Fn os::Kernel32Dll::_GetNumaHighestNodeNumber = NULL; |
aoqi@0 | 5239 | GetNumaNodeProcessorMask_Fn os::Kernel32Dll::_GetNumaNodeProcessorMask = NULL; |
aoqi@0 | 5240 | RtlCaptureStackBackTrace_Fn os::Kernel32Dll::_RtlCaptureStackBackTrace = NULL; |
aoqi@0 | 5241 | |
aoqi@0 | 5242 | |
aoqi@0 | 5243 | BOOL os::Kernel32Dll::initialized = FALSE; |
aoqi@0 | 5244 | SIZE_T os::Kernel32Dll::GetLargePageMinimum() { |
aoqi@0 | 5245 | assert(initialized && _GetLargePageMinimum != NULL, |
aoqi@0 | 5246 | "GetLargePageMinimumAvailable() not yet called"); |
aoqi@0 | 5247 | return _GetLargePageMinimum(); |
aoqi@0 | 5248 | } |
aoqi@0 | 5249 | |
aoqi@0 | 5250 | BOOL os::Kernel32Dll::GetLargePageMinimumAvailable() { |
aoqi@0 | 5251 | if (!initialized) { |
aoqi@0 | 5252 | initialize(); |
aoqi@0 | 5253 | } |
aoqi@0 | 5254 | return _GetLargePageMinimum != NULL; |
aoqi@0 | 5255 | } |
aoqi@0 | 5256 | |
aoqi@0 | 5257 | BOOL os::Kernel32Dll::NumaCallsAvailable() { |
aoqi@0 | 5258 | if (!initialized) { |
aoqi@0 | 5259 | initialize(); |
aoqi@0 | 5260 | } |
aoqi@0 | 5261 | return _VirtualAllocExNuma != NULL; |
aoqi@0 | 5262 | } |
aoqi@0 | 5263 | |
aoqi@0 | 5264 | LPVOID os::Kernel32Dll::VirtualAllocExNuma(HANDLE hProc, LPVOID addr, SIZE_T bytes, DWORD flags, DWORD prot, DWORD node) { |
aoqi@0 | 5265 | assert(initialized && _VirtualAllocExNuma != NULL, |
aoqi@0 | 5266 | "NUMACallsAvailable() not yet called"); |
aoqi@0 | 5267 | |
aoqi@0 | 5268 | return _VirtualAllocExNuma(hProc, addr, bytes, flags, prot, node); |
aoqi@0 | 5269 | } |
aoqi@0 | 5270 | |
aoqi@0 | 5271 | BOOL os::Kernel32Dll::GetNumaHighestNodeNumber(PULONG ptr_highest_node_number) { |
aoqi@0 | 5272 | assert(initialized && _GetNumaHighestNodeNumber != NULL, |
aoqi@0 | 5273 | "NUMACallsAvailable() not yet called"); |
aoqi@0 | 5274 | |
aoqi@0 | 5275 | return _GetNumaHighestNodeNumber(ptr_highest_node_number); |
aoqi@0 | 5276 | } |
aoqi@0 | 5277 | |
aoqi@0 | 5278 | BOOL os::Kernel32Dll::GetNumaNodeProcessorMask(UCHAR node, PULONGLONG proc_mask) { |
aoqi@0 | 5279 | assert(initialized && _GetNumaNodeProcessorMask != NULL, |
aoqi@0 | 5280 | "NUMACallsAvailable() not yet called"); |
aoqi@0 | 5281 | |
aoqi@0 | 5282 | return _GetNumaNodeProcessorMask(node, proc_mask); |
aoqi@0 | 5283 | } |
aoqi@0 | 5284 | |
aoqi@0 | 5285 | USHORT os::Kernel32Dll::RtlCaptureStackBackTrace(ULONG FrameToSkip, |
aoqi@0 | 5286 | ULONG FrameToCapture, PVOID* BackTrace, PULONG BackTraceHash) { |
aoqi@0 | 5287 | if (!initialized) { |
aoqi@0 | 5288 | initialize(); |
aoqi@0 | 5289 | } |
aoqi@0 | 5290 | |
aoqi@0 | 5291 | if (_RtlCaptureStackBackTrace != NULL) { |
aoqi@0 | 5292 | return _RtlCaptureStackBackTrace(FrameToSkip, FrameToCapture, |
aoqi@0 | 5293 | BackTrace, BackTraceHash); |
aoqi@0 | 5294 | } else { |
aoqi@0 | 5295 | return 0; |
aoqi@0 | 5296 | } |
aoqi@0 | 5297 | } |
aoqi@0 | 5298 | |
aoqi@0 | 5299 | void os::Kernel32Dll::initializeCommon() { |
aoqi@0 | 5300 | if (!initialized) { |
aoqi@0 | 5301 | HMODULE handle = ::GetModuleHandle("Kernel32.dll"); |
aoqi@0 | 5302 | assert(handle != NULL, "Just check"); |
aoqi@0 | 5303 | _GetLargePageMinimum = (GetLargePageMinimum_Fn)::GetProcAddress(handle, "GetLargePageMinimum"); |
aoqi@0 | 5304 | _VirtualAllocExNuma = (VirtualAllocExNuma_Fn)::GetProcAddress(handle, "VirtualAllocExNuma"); |
aoqi@0 | 5305 | _GetNumaHighestNodeNumber = (GetNumaHighestNodeNumber_Fn)::GetProcAddress(handle, "GetNumaHighestNodeNumber"); |
aoqi@0 | 5306 | _GetNumaNodeProcessorMask = (GetNumaNodeProcessorMask_Fn)::GetProcAddress(handle, "GetNumaNodeProcessorMask"); |
aoqi@0 | 5307 | _RtlCaptureStackBackTrace = (RtlCaptureStackBackTrace_Fn)::GetProcAddress(handle, "RtlCaptureStackBackTrace"); |
aoqi@0 | 5308 | initialized = TRUE; |
aoqi@0 | 5309 | } |
aoqi@0 | 5310 | } |
aoqi@0 | 5311 | |
aoqi@0 | 5312 | |
aoqi@0 | 5313 | |
aoqi@0 | 5314 | #ifndef JDK6_OR_EARLIER |
aoqi@0 | 5315 | |
aoqi@0 | 5316 | void os::Kernel32Dll::initialize() { |
aoqi@0 | 5317 | initializeCommon(); |
aoqi@0 | 5318 | } |
aoqi@0 | 5319 | |
aoqi@0 | 5320 | |
aoqi@0 | 5321 | // Kernel32 API |
aoqi@0 | 5322 | inline BOOL os::Kernel32Dll::SwitchToThread() { |
aoqi@0 | 5323 | return ::SwitchToThread(); |
aoqi@0 | 5324 | } |
aoqi@0 | 5325 | |
aoqi@0 | 5326 | inline BOOL os::Kernel32Dll::SwitchToThreadAvailable() { |
aoqi@0 | 5327 | return true; |
aoqi@0 | 5328 | } |
aoqi@0 | 5329 | |
aoqi@0 | 5330 | // Help tools |
aoqi@0 | 5331 | inline BOOL os::Kernel32Dll::HelpToolsAvailable() { |
aoqi@0 | 5332 | return true; |
aoqi@0 | 5333 | } |
aoqi@0 | 5334 | |
aoqi@0 | 5335 | inline HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,DWORD th32ProcessId) { |
aoqi@0 | 5336 | return ::CreateToolhelp32Snapshot(dwFlags, th32ProcessId); |
aoqi@0 | 5337 | } |
aoqi@0 | 5338 | |
aoqi@0 | 5339 | inline BOOL os::Kernel32Dll::Module32First(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
aoqi@0 | 5340 | return ::Module32First(hSnapshot, lpme); |
aoqi@0 | 5341 | } |
aoqi@0 | 5342 | |
aoqi@0 | 5343 | inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
aoqi@0 | 5344 | return ::Module32Next(hSnapshot, lpme); |
aoqi@0 | 5345 | } |
aoqi@0 | 5346 | |
aoqi@0 | 5347 | |
aoqi@0 | 5348 | inline BOOL os::Kernel32Dll::GetNativeSystemInfoAvailable() { |
aoqi@0 | 5349 | return true; |
aoqi@0 | 5350 | } |
aoqi@0 | 5351 | |
aoqi@0 | 5352 | inline void os::Kernel32Dll::GetNativeSystemInfo(LPSYSTEM_INFO lpSystemInfo) { |
aoqi@0 | 5353 | ::GetNativeSystemInfo(lpSystemInfo); |
aoqi@0 | 5354 | } |
aoqi@0 | 5355 | |
aoqi@0 | 5356 | // PSAPI API |
aoqi@0 | 5357 | inline BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess, HMODULE *lpModule, DWORD cb, LPDWORD lpcbNeeded) { |
aoqi@0 | 5358 | return ::EnumProcessModules(hProcess, lpModule, cb, lpcbNeeded); |
aoqi@0 | 5359 | } |
aoqi@0 | 5360 | |
aoqi@0 | 5361 | inline DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess, HMODULE hModule, LPTSTR lpFilename, DWORD nSize) { |
aoqi@0 | 5362 | return ::GetModuleFileNameEx(hProcess, hModule, lpFilename, nSize); |
aoqi@0 | 5363 | } |
aoqi@0 | 5364 | |
aoqi@0 | 5365 | inline BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess, HMODULE hModule, LPMODULEINFO lpmodinfo, DWORD cb) { |
aoqi@0 | 5366 | return ::GetModuleInformation(hProcess, hModule, lpmodinfo, cb); |
aoqi@0 | 5367 | } |
aoqi@0 | 5368 | |
aoqi@0 | 5369 | inline BOOL os::PSApiDll::PSApiAvailable() { |
aoqi@0 | 5370 | return true; |
aoqi@0 | 5371 | } |
aoqi@0 | 5372 | |
aoqi@0 | 5373 | |
aoqi@0 | 5374 | // WinSock2 API |
aoqi@0 | 5375 | inline BOOL os::WinSock2Dll::WSAStartup(WORD wVersionRequested, LPWSADATA lpWSAData) { |
aoqi@0 | 5376 | return ::WSAStartup(wVersionRequested, lpWSAData); |
aoqi@0 | 5377 | } |
aoqi@0 | 5378 | |
aoqi@0 | 5379 | inline struct hostent* os::WinSock2Dll::gethostbyname(const char *name) { |
aoqi@0 | 5380 | return ::gethostbyname(name); |
aoqi@0 | 5381 | } |
aoqi@0 | 5382 | |
aoqi@0 | 5383 | inline BOOL os::WinSock2Dll::WinSock2Available() { |
aoqi@0 | 5384 | return true; |
aoqi@0 | 5385 | } |
aoqi@0 | 5386 | |
aoqi@0 | 5387 | // Advapi API |
aoqi@0 | 5388 | inline BOOL os::Advapi32Dll::AdjustTokenPrivileges(HANDLE TokenHandle, |
aoqi@0 | 5389 | BOOL DisableAllPrivileges, PTOKEN_PRIVILEGES NewState, DWORD BufferLength, |
aoqi@0 | 5390 | PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength) { |
aoqi@0 | 5391 | return ::AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState, |
aoqi@0 | 5392 | BufferLength, PreviousState, ReturnLength); |
aoqi@0 | 5393 | } |
aoqi@0 | 5394 | |
aoqi@0 | 5395 | inline BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle, DWORD DesiredAccess, |
aoqi@0 | 5396 | PHANDLE TokenHandle) { |
aoqi@0 | 5397 | return ::OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle); |
aoqi@0 | 5398 | } |
aoqi@0 | 5399 | |
aoqi@0 | 5400 | inline BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid) { |
aoqi@0 | 5401 | return ::LookupPrivilegeValue(lpSystemName, lpName, lpLuid); |
aoqi@0 | 5402 | } |
aoqi@0 | 5403 | |
aoqi@0 | 5404 | inline BOOL os::Advapi32Dll::AdvapiAvailable() { |
aoqi@0 | 5405 | return true; |
aoqi@0 | 5406 | } |
aoqi@0 | 5407 | |
aoqi@0 | 5408 | void* os::get_default_process_handle() { |
aoqi@0 | 5409 | return (void*)GetModuleHandle(NULL); |
aoqi@0 | 5410 | } |
aoqi@0 | 5411 | |
aoqi@0 | 5412 | // Builds a platform dependent Agent_OnLoad_<lib_name> function name |
aoqi@0 | 5413 | // which is used to find statically linked in agents. |
aoqi@0 | 5414 | // Additionally for windows, takes into account __stdcall names. |
aoqi@0 | 5415 | // Parameters: |
aoqi@0 | 5416 | // sym_name: Symbol in library we are looking for |
aoqi@0 | 5417 | // lib_name: Name of library to look in, NULL for shared libs. |
aoqi@0 | 5418 | // is_absolute_path == true if lib_name is absolute path to agent |
aoqi@0 | 5419 | // such as "C:/a/b/L.dll" |
aoqi@0 | 5420 | // == false if only the base name of the library is passed in |
aoqi@0 | 5421 | // such as "L" |
aoqi@0 | 5422 | char* os::build_agent_function_name(const char *sym_name, const char *lib_name, |
aoqi@0 | 5423 | bool is_absolute_path) { |
aoqi@0 | 5424 | char *agent_entry_name; |
aoqi@0 | 5425 | size_t len; |
aoqi@0 | 5426 | size_t name_len; |
aoqi@0 | 5427 | size_t prefix_len = strlen(JNI_LIB_PREFIX); |
aoqi@0 | 5428 | size_t suffix_len = strlen(JNI_LIB_SUFFIX); |
aoqi@0 | 5429 | const char *start; |
aoqi@0 | 5430 | |
aoqi@0 | 5431 | if (lib_name != NULL) { |
aoqi@0 | 5432 | len = name_len = strlen(lib_name); |
aoqi@0 | 5433 | if (is_absolute_path) { |
aoqi@0 | 5434 | // Need to strip path, prefix and suffix |
aoqi@0 | 5435 | if ((start = strrchr(lib_name, *os::file_separator())) != NULL) { |
aoqi@0 | 5436 | lib_name = ++start; |
aoqi@0 | 5437 | } else { |
aoqi@0 | 5438 | // Need to check for drive prefix |
aoqi@0 | 5439 | if ((start = strchr(lib_name, ':')) != NULL) { |
aoqi@0 | 5440 | lib_name = ++start; |
aoqi@0 | 5441 | } |
aoqi@0 | 5442 | } |
aoqi@0 | 5443 | if (len <= (prefix_len + suffix_len)) { |
aoqi@0 | 5444 | return NULL; |
aoqi@0 | 5445 | } |
aoqi@0 | 5446 | lib_name += prefix_len; |
aoqi@0 | 5447 | name_len = strlen(lib_name) - suffix_len; |
aoqi@0 | 5448 | } |
aoqi@0 | 5449 | } |
aoqi@0 | 5450 | len = (lib_name != NULL ? name_len : 0) + strlen(sym_name) + 2; |
aoqi@0 | 5451 | agent_entry_name = NEW_C_HEAP_ARRAY_RETURN_NULL(char, len, mtThread); |
aoqi@0 | 5452 | if (agent_entry_name == NULL) { |
aoqi@0 | 5453 | return NULL; |
aoqi@0 | 5454 | } |
aoqi@0 | 5455 | if (lib_name != NULL) { |
aoqi@0 | 5456 | const char *p = strrchr(sym_name, '@'); |
aoqi@0 | 5457 | if (p != NULL && p != sym_name) { |
aoqi@0 | 5458 | // sym_name == _Agent_OnLoad@XX |
aoqi@0 | 5459 | strncpy(agent_entry_name, sym_name, (p - sym_name)); |
aoqi@0 | 5460 | agent_entry_name[(p-sym_name)] = '\0'; |
aoqi@0 | 5461 | // agent_entry_name == _Agent_OnLoad |
aoqi@0 | 5462 | strcat(agent_entry_name, "_"); |
aoqi@0 | 5463 | strncat(agent_entry_name, lib_name, name_len); |
aoqi@0 | 5464 | strcat(agent_entry_name, p); |
aoqi@0 | 5465 | // agent_entry_name == _Agent_OnLoad_lib_name@XX |
aoqi@0 | 5466 | } else { |
aoqi@0 | 5467 | strcpy(agent_entry_name, sym_name); |
aoqi@0 | 5468 | strcat(agent_entry_name, "_"); |
aoqi@0 | 5469 | strncat(agent_entry_name, lib_name, name_len); |
aoqi@0 | 5470 | } |
aoqi@0 | 5471 | } else { |
aoqi@0 | 5472 | strcpy(agent_entry_name, sym_name); |
aoqi@0 | 5473 | } |
aoqi@0 | 5474 | return agent_entry_name; |
aoqi@0 | 5475 | } |
aoqi@0 | 5476 | |
aoqi@0 | 5477 | #else |
aoqi@0 | 5478 | // Kernel32 API |
aoqi@0 | 5479 | typedef BOOL (WINAPI* SwitchToThread_Fn)(void); |
aoqi@0 | 5480 | typedef HANDLE (WINAPI* CreateToolhelp32Snapshot_Fn)(DWORD,DWORD); |
aoqi@0 | 5481 | typedef BOOL (WINAPI* Module32First_Fn)(HANDLE,LPMODULEENTRY32); |
aoqi@0 | 5482 | typedef BOOL (WINAPI* Module32Next_Fn)(HANDLE,LPMODULEENTRY32); |
aoqi@0 | 5483 | typedef void (WINAPI* GetNativeSystemInfo_Fn)(LPSYSTEM_INFO); |
aoqi@0 | 5484 | |
aoqi@0 | 5485 | SwitchToThread_Fn os::Kernel32Dll::_SwitchToThread = NULL; |
aoqi@0 | 5486 | CreateToolhelp32Snapshot_Fn os::Kernel32Dll::_CreateToolhelp32Snapshot = NULL; |
aoqi@0 | 5487 | Module32First_Fn os::Kernel32Dll::_Module32First = NULL; |
aoqi@0 | 5488 | Module32Next_Fn os::Kernel32Dll::_Module32Next = NULL; |
aoqi@0 | 5489 | GetNativeSystemInfo_Fn os::Kernel32Dll::_GetNativeSystemInfo = NULL; |
aoqi@0 | 5490 | |
aoqi@0 | 5491 | void os::Kernel32Dll::initialize() { |
aoqi@0 | 5492 | if (!initialized) { |
aoqi@0 | 5493 | HMODULE handle = ::GetModuleHandle("Kernel32.dll"); |
aoqi@0 | 5494 | assert(handle != NULL, "Just check"); |
aoqi@0 | 5495 | |
aoqi@0 | 5496 | _SwitchToThread = (SwitchToThread_Fn)::GetProcAddress(handle, "SwitchToThread"); |
aoqi@0 | 5497 | _CreateToolhelp32Snapshot = (CreateToolhelp32Snapshot_Fn) |
aoqi@0 | 5498 | ::GetProcAddress(handle, "CreateToolhelp32Snapshot"); |
aoqi@0 | 5499 | _Module32First = (Module32First_Fn)::GetProcAddress(handle, "Module32First"); |
aoqi@0 | 5500 | _Module32Next = (Module32Next_Fn)::GetProcAddress(handle, "Module32Next"); |
aoqi@0 | 5501 | _GetNativeSystemInfo = (GetNativeSystemInfo_Fn)::GetProcAddress(handle, "GetNativeSystemInfo"); |
aoqi@0 | 5502 | initializeCommon(); // resolve the functions that always need resolving |
aoqi@0 | 5503 | |
aoqi@0 | 5504 | initialized = TRUE; |
aoqi@0 | 5505 | } |
aoqi@0 | 5506 | } |
aoqi@0 | 5507 | |
aoqi@0 | 5508 | BOOL os::Kernel32Dll::SwitchToThread() { |
aoqi@0 | 5509 | assert(initialized && _SwitchToThread != NULL, |
aoqi@0 | 5510 | "SwitchToThreadAvailable() not yet called"); |
aoqi@0 | 5511 | return _SwitchToThread(); |
aoqi@0 | 5512 | } |
aoqi@0 | 5513 | |
aoqi@0 | 5514 | |
aoqi@0 | 5515 | BOOL os::Kernel32Dll::SwitchToThreadAvailable() { |
aoqi@0 | 5516 | if (!initialized) { |
aoqi@0 | 5517 | initialize(); |
aoqi@0 | 5518 | } |
aoqi@0 | 5519 | return _SwitchToThread != NULL; |
aoqi@0 | 5520 | } |
aoqi@0 | 5521 | |
aoqi@0 | 5522 | // Help tools |
aoqi@0 | 5523 | BOOL os::Kernel32Dll::HelpToolsAvailable() { |
aoqi@0 | 5524 | if (!initialized) { |
aoqi@0 | 5525 | initialize(); |
aoqi@0 | 5526 | } |
aoqi@0 | 5527 | return _CreateToolhelp32Snapshot != NULL && |
aoqi@0 | 5528 | _Module32First != NULL && |
aoqi@0 | 5529 | _Module32Next != NULL; |
aoqi@0 | 5530 | } |
aoqi@0 | 5531 | |
aoqi@0 | 5532 | HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,DWORD th32ProcessId) { |
aoqi@0 | 5533 | assert(initialized && _CreateToolhelp32Snapshot != NULL, |
aoqi@0 | 5534 | "HelpToolsAvailable() not yet called"); |
aoqi@0 | 5535 | |
aoqi@0 | 5536 | return _CreateToolhelp32Snapshot(dwFlags, th32ProcessId); |
aoqi@0 | 5537 | } |
aoqi@0 | 5538 | |
aoqi@0 | 5539 | BOOL os::Kernel32Dll::Module32First(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
aoqi@0 | 5540 | assert(initialized && _Module32First != NULL, |
aoqi@0 | 5541 | "HelpToolsAvailable() not yet called"); |
aoqi@0 | 5542 | |
aoqi@0 | 5543 | return _Module32First(hSnapshot, lpme); |
aoqi@0 | 5544 | } |
aoqi@0 | 5545 | |
aoqi@0 | 5546 | inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
aoqi@0 | 5547 | assert(initialized && _Module32Next != NULL, |
aoqi@0 | 5548 | "HelpToolsAvailable() not yet called"); |
aoqi@0 | 5549 | |
aoqi@0 | 5550 | return _Module32Next(hSnapshot, lpme); |
aoqi@0 | 5551 | } |
aoqi@0 | 5552 | |
aoqi@0 | 5553 | |
aoqi@0 | 5554 | BOOL os::Kernel32Dll::GetNativeSystemInfoAvailable() { |
aoqi@0 | 5555 | if (!initialized) { |
aoqi@0 | 5556 | initialize(); |
aoqi@0 | 5557 | } |
aoqi@0 | 5558 | return _GetNativeSystemInfo != NULL; |
aoqi@0 | 5559 | } |
aoqi@0 | 5560 | |
aoqi@0 | 5561 | void os::Kernel32Dll::GetNativeSystemInfo(LPSYSTEM_INFO lpSystemInfo) { |
aoqi@0 | 5562 | assert(initialized && _GetNativeSystemInfo != NULL, |
aoqi@0 | 5563 | "GetNativeSystemInfoAvailable() not yet called"); |
aoqi@0 | 5564 | |
aoqi@0 | 5565 | _GetNativeSystemInfo(lpSystemInfo); |
aoqi@0 | 5566 | } |
aoqi@0 | 5567 | |
aoqi@0 | 5568 | // PSAPI API |
aoqi@0 | 5569 | |
aoqi@0 | 5570 | |
aoqi@0 | 5571 | typedef BOOL (WINAPI *EnumProcessModules_Fn)(HANDLE, HMODULE *, DWORD, LPDWORD); |
aoqi@0 | 5572 | typedef BOOL (WINAPI *GetModuleFileNameEx_Fn)(HANDLE, HMODULE, LPTSTR, DWORD);; |
aoqi@0 | 5573 | typedef BOOL (WINAPI *GetModuleInformation_Fn)(HANDLE, HMODULE, LPMODULEINFO, DWORD); |
aoqi@0 | 5574 | |
aoqi@0 | 5575 | EnumProcessModules_Fn os::PSApiDll::_EnumProcessModules = NULL; |
aoqi@0 | 5576 | GetModuleFileNameEx_Fn os::PSApiDll::_GetModuleFileNameEx = NULL; |
aoqi@0 | 5577 | GetModuleInformation_Fn os::PSApiDll::_GetModuleInformation = NULL; |
aoqi@0 | 5578 | BOOL os::PSApiDll::initialized = FALSE; |
aoqi@0 | 5579 | |
aoqi@0 | 5580 | void os::PSApiDll::initialize() { |
aoqi@0 | 5581 | if (!initialized) { |
aoqi@0 | 5582 | HMODULE handle = os::win32::load_Windows_dll("PSAPI.DLL", NULL, 0); |
aoqi@0 | 5583 | if (handle != NULL) { |
aoqi@0 | 5584 | _EnumProcessModules = (EnumProcessModules_Fn)::GetProcAddress(handle, |
aoqi@0 | 5585 | "EnumProcessModules"); |
aoqi@0 | 5586 | _GetModuleFileNameEx = (GetModuleFileNameEx_Fn)::GetProcAddress(handle, |
aoqi@0 | 5587 | "GetModuleFileNameExA"); |
aoqi@0 | 5588 | _GetModuleInformation = (GetModuleInformation_Fn)::GetProcAddress(handle, |
aoqi@0 | 5589 | "GetModuleInformation"); |
aoqi@0 | 5590 | } |
aoqi@0 | 5591 | initialized = TRUE; |
aoqi@0 | 5592 | } |
aoqi@0 | 5593 | } |
aoqi@0 | 5594 | |
aoqi@0 | 5595 | |
aoqi@0 | 5596 | |
aoqi@0 | 5597 | BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess, HMODULE *lpModule, DWORD cb, LPDWORD lpcbNeeded) { |
aoqi@0 | 5598 | assert(initialized && _EnumProcessModules != NULL, |
aoqi@0 | 5599 | "PSApiAvailable() not yet called"); |
aoqi@0 | 5600 | return _EnumProcessModules(hProcess, lpModule, cb, lpcbNeeded); |
aoqi@0 | 5601 | } |
aoqi@0 | 5602 | |
aoqi@0 | 5603 | DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess, HMODULE hModule, LPTSTR lpFilename, DWORD nSize) { |
aoqi@0 | 5604 | assert(initialized && _GetModuleFileNameEx != NULL, |
aoqi@0 | 5605 | "PSApiAvailable() not yet called"); |
aoqi@0 | 5606 | return _GetModuleFileNameEx(hProcess, hModule, lpFilename, nSize); |
aoqi@0 | 5607 | } |
aoqi@0 | 5608 | |
aoqi@0 | 5609 | BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess, HMODULE hModule, LPMODULEINFO lpmodinfo, DWORD cb) { |
aoqi@0 | 5610 | assert(initialized && _GetModuleInformation != NULL, |
aoqi@0 | 5611 | "PSApiAvailable() not yet called"); |
aoqi@0 | 5612 | return _GetModuleInformation(hProcess, hModule, lpmodinfo, cb); |
aoqi@0 | 5613 | } |
aoqi@0 | 5614 | |
aoqi@0 | 5615 | BOOL os::PSApiDll::PSApiAvailable() { |
aoqi@0 | 5616 | if (!initialized) { |
aoqi@0 | 5617 | initialize(); |
aoqi@0 | 5618 | } |
aoqi@0 | 5619 | return _EnumProcessModules != NULL && |
aoqi@0 | 5620 | _GetModuleFileNameEx != NULL && |
aoqi@0 | 5621 | _GetModuleInformation != NULL; |
aoqi@0 | 5622 | } |
aoqi@0 | 5623 | |
aoqi@0 | 5624 | |
aoqi@0 | 5625 | // WinSock2 API |
aoqi@0 | 5626 | typedef int (PASCAL FAR* WSAStartup_Fn)(WORD, LPWSADATA); |
aoqi@0 | 5627 | typedef struct hostent *(PASCAL FAR *gethostbyname_Fn)(...); |
aoqi@0 | 5628 | |
aoqi@0 | 5629 | WSAStartup_Fn os::WinSock2Dll::_WSAStartup = NULL; |
aoqi@0 | 5630 | gethostbyname_Fn os::WinSock2Dll::_gethostbyname = NULL; |
aoqi@0 | 5631 | BOOL os::WinSock2Dll::initialized = FALSE; |
aoqi@0 | 5632 | |
aoqi@0 | 5633 | void os::WinSock2Dll::initialize() { |
aoqi@0 | 5634 | if (!initialized) { |
aoqi@0 | 5635 | HMODULE handle = os::win32::load_Windows_dll("ws2_32.dll", NULL, 0); |
aoqi@0 | 5636 | if (handle != NULL) { |
aoqi@0 | 5637 | _WSAStartup = (WSAStartup_Fn)::GetProcAddress(handle, "WSAStartup"); |
aoqi@0 | 5638 | _gethostbyname = (gethostbyname_Fn)::GetProcAddress(handle, "gethostbyname"); |
aoqi@0 | 5639 | } |
aoqi@0 | 5640 | initialized = TRUE; |
aoqi@0 | 5641 | } |
aoqi@0 | 5642 | } |
aoqi@0 | 5643 | |
aoqi@0 | 5644 | |
aoqi@0 | 5645 | BOOL os::WinSock2Dll::WSAStartup(WORD wVersionRequested, LPWSADATA lpWSAData) { |
aoqi@0 | 5646 | assert(initialized && _WSAStartup != NULL, |
aoqi@0 | 5647 | "WinSock2Available() not yet called"); |
aoqi@0 | 5648 | return _WSAStartup(wVersionRequested, lpWSAData); |
aoqi@0 | 5649 | } |
aoqi@0 | 5650 | |
aoqi@0 | 5651 | struct hostent* os::WinSock2Dll::gethostbyname(const char *name) { |
aoqi@0 | 5652 | assert(initialized && _gethostbyname != NULL, |
aoqi@0 | 5653 | "WinSock2Available() not yet called"); |
aoqi@0 | 5654 | return _gethostbyname(name); |
aoqi@0 | 5655 | } |
aoqi@0 | 5656 | |
aoqi@0 | 5657 | BOOL os::WinSock2Dll::WinSock2Available() { |
aoqi@0 | 5658 | if (!initialized) { |
aoqi@0 | 5659 | initialize(); |
aoqi@0 | 5660 | } |
aoqi@0 | 5661 | return _WSAStartup != NULL && |
aoqi@0 | 5662 | _gethostbyname != NULL; |
aoqi@0 | 5663 | } |
aoqi@0 | 5664 | |
aoqi@0 | 5665 | typedef BOOL (WINAPI *AdjustTokenPrivileges_Fn)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD); |
aoqi@0 | 5666 | typedef BOOL (WINAPI *OpenProcessToken_Fn)(HANDLE, DWORD, PHANDLE); |
aoqi@0 | 5667 | typedef BOOL (WINAPI *LookupPrivilegeValue_Fn)(LPCTSTR, LPCTSTR, PLUID); |
aoqi@0 | 5668 | |
aoqi@0 | 5669 | AdjustTokenPrivileges_Fn os::Advapi32Dll::_AdjustTokenPrivileges = NULL; |
aoqi@0 | 5670 | OpenProcessToken_Fn os::Advapi32Dll::_OpenProcessToken = NULL; |
aoqi@0 | 5671 | LookupPrivilegeValue_Fn os::Advapi32Dll::_LookupPrivilegeValue = NULL; |
aoqi@0 | 5672 | BOOL os::Advapi32Dll::initialized = FALSE; |
aoqi@0 | 5673 | |
aoqi@0 | 5674 | void os::Advapi32Dll::initialize() { |
aoqi@0 | 5675 | if (!initialized) { |
aoqi@0 | 5676 | HMODULE handle = os::win32::load_Windows_dll("advapi32.dll", NULL, 0); |
aoqi@0 | 5677 | if (handle != NULL) { |
aoqi@0 | 5678 | _AdjustTokenPrivileges = (AdjustTokenPrivileges_Fn)::GetProcAddress(handle, |
aoqi@0 | 5679 | "AdjustTokenPrivileges"); |
aoqi@0 | 5680 | _OpenProcessToken = (OpenProcessToken_Fn)::GetProcAddress(handle, |
aoqi@0 | 5681 | "OpenProcessToken"); |
aoqi@0 | 5682 | _LookupPrivilegeValue = (LookupPrivilegeValue_Fn)::GetProcAddress(handle, |
aoqi@0 | 5683 | "LookupPrivilegeValueA"); |
aoqi@0 | 5684 | } |
aoqi@0 | 5685 | initialized = TRUE; |
aoqi@0 | 5686 | } |
aoqi@0 | 5687 | } |
aoqi@0 | 5688 | |
aoqi@0 | 5689 | BOOL os::Advapi32Dll::AdjustTokenPrivileges(HANDLE TokenHandle, |
aoqi@0 | 5690 | BOOL DisableAllPrivileges, PTOKEN_PRIVILEGES NewState, DWORD BufferLength, |
aoqi@0 | 5691 | PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength) { |
aoqi@0 | 5692 | assert(initialized && _AdjustTokenPrivileges != NULL, |
aoqi@0 | 5693 | "AdvapiAvailable() not yet called"); |
aoqi@0 | 5694 | return _AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState, |
aoqi@0 | 5695 | BufferLength, PreviousState, ReturnLength); |
aoqi@0 | 5696 | } |
aoqi@0 | 5697 | |
aoqi@0 | 5698 | BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle, DWORD DesiredAccess, |
aoqi@0 | 5699 | PHANDLE TokenHandle) { |
aoqi@0 | 5700 | assert(initialized && _OpenProcessToken != NULL, |
aoqi@0 | 5701 | "AdvapiAvailable() not yet called"); |
aoqi@0 | 5702 | return _OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle); |
aoqi@0 | 5703 | } |
aoqi@0 | 5704 | |
aoqi@0 | 5705 | BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid) { |
aoqi@0 | 5706 | assert(initialized && _LookupPrivilegeValue != NULL, |
aoqi@0 | 5707 | "AdvapiAvailable() not yet called"); |
aoqi@0 | 5708 | return _LookupPrivilegeValue(lpSystemName, lpName, lpLuid); |
aoqi@0 | 5709 | } |
aoqi@0 | 5710 | |
aoqi@0 | 5711 | BOOL os::Advapi32Dll::AdvapiAvailable() { |
aoqi@0 | 5712 | if (!initialized) { |
aoqi@0 | 5713 | initialize(); |
aoqi@0 | 5714 | } |
aoqi@0 | 5715 | return _AdjustTokenPrivileges != NULL && |
aoqi@0 | 5716 | _OpenProcessToken != NULL && |
aoqi@0 | 5717 | _LookupPrivilegeValue != NULL; |
aoqi@0 | 5718 | } |
aoqi@0 | 5719 | |
aoqi@0 | 5720 | #endif |
aoqi@0 | 5721 | |
aoqi@0 | 5722 | #ifndef PRODUCT |
aoqi@0 | 5723 | |
aoqi@0 | 5724 | // test the code path in reserve_memory_special() that tries to allocate memory in a single |
aoqi@0 | 5725 | // contiguous memory block at a particular address. |
aoqi@0 | 5726 | // The test first tries to find a good approximate address to allocate at by using the same |
aoqi@0 | 5727 | // method to allocate some memory at any address. The test then tries to allocate memory in |
aoqi@0 | 5728 | // the vicinity (not directly after it to avoid possible by-chance use of that location) |
aoqi@0 | 5729 | // This is of course only some dodgy assumption, there is no guarantee that the vicinity of |
aoqi@0 | 5730 | // the previously allocated memory is available for allocation. The only actual failure |
aoqi@0 | 5731 | // that is reported is when the test tries to allocate at a particular location but gets a |
aoqi@0 | 5732 | // different valid one. A NULL return value at this point is not considered an error but may |
aoqi@0 | 5733 | // be legitimate. |
aoqi@0 | 5734 | // If -XX:+VerboseInternalVMTests is enabled, print some explanatory messages. |
aoqi@0 | 5735 | void TestReserveMemorySpecial_test() { |
aoqi@0 | 5736 | if (!UseLargePages) { |
aoqi@0 | 5737 | if (VerboseInternalVMTests) { |
aoqi@0 | 5738 | gclog_or_tty->print("Skipping test because large pages are disabled"); |
aoqi@0 | 5739 | } |
aoqi@0 | 5740 | return; |
aoqi@0 | 5741 | } |
aoqi@0 | 5742 | // save current value of globals |
aoqi@0 | 5743 | bool old_use_large_pages_individual_allocation = UseLargePagesIndividualAllocation; |
aoqi@0 | 5744 | bool old_use_numa_interleaving = UseNUMAInterleaving; |
aoqi@0 | 5745 | |
aoqi@0 | 5746 | // set globals to make sure we hit the correct code path |
aoqi@0 | 5747 | UseLargePagesIndividualAllocation = UseNUMAInterleaving = false; |
aoqi@0 | 5748 | |
aoqi@0 | 5749 | // do an allocation at an address selected by the OS to get a good one. |
aoqi@0 | 5750 | const size_t large_allocation_size = os::large_page_size() * 4; |
aoqi@0 | 5751 | char* result = os::reserve_memory_special(large_allocation_size, os::large_page_size(), NULL, false); |
aoqi@0 | 5752 | if (result == NULL) { |
aoqi@0 | 5753 | if (VerboseInternalVMTests) { |
aoqi@0 | 5754 | gclog_or_tty->print("Failed to allocate control block with size "SIZE_FORMAT". Skipping remainder of test.", |
aoqi@0 | 5755 | large_allocation_size); |
aoqi@0 | 5756 | } |
aoqi@0 | 5757 | } else { |
aoqi@0 | 5758 | os::release_memory_special(result, large_allocation_size); |
aoqi@0 | 5759 | |
aoqi@0 | 5760 | // allocate another page within the recently allocated memory area which seems to be a good location. At least |
aoqi@0 | 5761 | // we managed to get it once. |
aoqi@0 | 5762 | const size_t expected_allocation_size = os::large_page_size(); |
aoqi@0 | 5763 | char* expected_location = result + os::large_page_size(); |
aoqi@0 | 5764 | char* actual_location = os::reserve_memory_special(expected_allocation_size, os::large_page_size(), expected_location, false); |
aoqi@0 | 5765 | if (actual_location == NULL) { |
aoqi@0 | 5766 | if (VerboseInternalVMTests) { |
aoqi@0 | 5767 | gclog_or_tty->print("Failed to allocate any memory at "PTR_FORMAT" size "SIZE_FORMAT". Skipping remainder of test.", |
aoqi@0 | 5768 | expected_location, large_allocation_size); |
aoqi@0 | 5769 | } |
aoqi@0 | 5770 | } else { |
aoqi@0 | 5771 | // release memory |
aoqi@0 | 5772 | os::release_memory_special(actual_location, expected_allocation_size); |
aoqi@0 | 5773 | // only now check, after releasing any memory to avoid any leaks. |
aoqi@0 | 5774 | assert(actual_location == expected_location, |
aoqi@0 | 5775 | err_msg("Failed to allocate memory at requested location "PTR_FORMAT" of size "SIZE_FORMAT", is "PTR_FORMAT" instead", |
aoqi@0 | 5776 | expected_location, expected_allocation_size, actual_location)); |
aoqi@0 | 5777 | } |
aoqi@0 | 5778 | } |
aoqi@0 | 5779 | |
aoqi@0 | 5780 | // restore globals |
aoqi@0 | 5781 | UseLargePagesIndividualAllocation = old_use_large_pages_individual_allocation; |
aoqi@0 | 5782 | UseNUMAInterleaving = old_use_numa_interleaving; |
aoqi@0 | 5783 | } |
aoqi@0 | 5784 | #endif // PRODUCT |
aoqi@0 | 5785 |