Wed, 02 Jan 2013 11:32:41 -0800
8004132: SerialGC: ValidateMarkSweep broken when running GCOld
Summary: Remove bit-rotten ValidateMarkSweep functionality and flag.
Reviewed-by: johnc, jmasa
Contributed-by: tamao <tao.mao@oracle.com>
duke@435 | 1 | /* |
never@3499 | 2 | * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "classfile/systemDictionary.hpp" |
stefank@2314 | 27 | #include "code/codeCache.hpp" |
stefank@2314 | 28 | #include "code/icBuffer.hpp" |
stefank@2314 | 29 | #include "code/nmethod.hpp" |
stefank@2314 | 30 | #include "code/vtableStubs.hpp" |
stefank@2314 | 31 | #include "compiler/compileBroker.hpp" |
stefank@2314 | 32 | #include "compiler/disassembler.hpp" |
stefank@2314 | 33 | #include "gc_implementation/shared/markSweep.hpp" |
stefank@2314 | 34 | #include "gc_interface/collectedHeap.hpp" |
stefank@2314 | 35 | #include "interpreter/bytecodeHistogram.hpp" |
stefank@2314 | 36 | #include "interpreter/interpreter.hpp" |
stefank@2314 | 37 | #include "memory/resourceArea.hpp" |
stefank@2314 | 38 | #include "memory/universe.hpp" |
stefank@2314 | 39 | #include "oops/oop.inline.hpp" |
stefank@2314 | 40 | #include "prims/privilegedStack.hpp" |
stefank@2314 | 41 | #include "runtime/arguments.hpp" |
stefank@2314 | 42 | #include "runtime/frame.hpp" |
stefank@2314 | 43 | #include "runtime/java.hpp" |
stefank@2314 | 44 | #include "runtime/sharedRuntime.hpp" |
stefank@2314 | 45 | #include "runtime/stubCodeGenerator.hpp" |
stefank@2314 | 46 | #include "runtime/stubRoutines.hpp" |
stefank@4299 | 47 | #include "runtime/thread.inline.hpp" |
stefank@2314 | 48 | #include "runtime/vframe.hpp" |
stefank@2314 | 49 | #include "services/heapDumper.hpp" |
stefank@2314 | 50 | #include "utilities/defaultStream.hpp" |
stefank@2314 | 51 | #include "utilities/events.hpp" |
stefank@2314 | 52 | #include "utilities/top.hpp" |
stefank@2314 | 53 | #include "utilities/vmError.hpp" |
stefank@2314 | 54 | #ifdef TARGET_OS_FAMILY_linux |
stefank@2314 | 55 | # include "os_linux.inline.hpp" |
stefank@2314 | 56 | #endif |
stefank@2314 | 57 | #ifdef TARGET_OS_FAMILY_solaris |
stefank@2314 | 58 | # include "os_solaris.inline.hpp" |
stefank@2314 | 59 | #endif |
stefank@2314 | 60 | #ifdef TARGET_OS_FAMILY_windows |
stefank@2314 | 61 | # include "os_windows.inline.hpp" |
stefank@2314 | 62 | #endif |
never@3156 | 63 | #ifdef TARGET_OS_FAMILY_bsd |
never@3156 | 64 | # include "os_bsd.inline.hpp" |
never@3156 | 65 | #endif |
duke@435 | 66 | |
duke@435 | 67 | #ifndef ASSERT |
duke@435 | 68 | # ifdef _DEBUG |
duke@435 | 69 | // NOTE: don't turn the lines below into a comment -- if you're getting |
duke@435 | 70 | // a compile error here, change the settings to define ASSERT |
duke@435 | 71 | ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging |
duke@435 | 72 | functions that do not slow down the system too much and thus can be left in optimized code. |
duke@435 | 73 | On the other hand, the code should not be included in a production version. |
duke@435 | 74 | # endif // _DEBUG |
duke@435 | 75 | #endif // ASSERT |
duke@435 | 76 | |
duke@435 | 77 | |
duke@435 | 78 | #ifdef _DEBUG |
duke@435 | 79 | # ifndef ASSERT |
duke@435 | 80 | configuration error: ASSERT must be defined in debug version |
duke@435 | 81 | # endif // ASSERT |
duke@435 | 82 | #endif // _DEBUG |
duke@435 | 83 | |
duke@435 | 84 | |
duke@435 | 85 | #ifdef PRODUCT |
duke@435 | 86 | # if -defined _DEBUG || -defined ASSERT |
duke@435 | 87 | configuration error: ASSERT et al. must not be defined in PRODUCT version |
duke@435 | 88 | # endif |
duke@435 | 89 | #endif // PRODUCT |
duke@435 | 90 | |
kvn@3971 | 91 | FormatBufferResource::FormatBufferResource(const char * format, ...) |
kvn@3971 | 92 | : FormatBufferBase((char*)resource_allocate_bytes(RES_BUFSZ)) { |
kvn@3971 | 93 | va_list argp; |
kvn@3971 | 94 | va_start(argp, format); |
kvn@3971 | 95 | jio_vsnprintf(_buf, RES_BUFSZ, format, argp); |
kvn@3971 | 96 | va_end(argp); |
kvn@3971 | 97 | } |
duke@435 | 98 | |
duke@435 | 99 | void warning(const char* format, ...) { |
kamg@2225 | 100 | if (PrintWarnings) { |
jcoomes@4070 | 101 | FILE* const err = defaultStream::error_stream(); |
jcoomes@4070 | 102 | jio_fprintf(err, "%s warning: ", VM_Version::vm_name()); |
kamg@2225 | 103 | va_list ap; |
kamg@2225 | 104 | va_start(ap, format); |
jcoomes@4070 | 105 | vfprintf(err, format, ap); |
kamg@2225 | 106 | va_end(ap); |
jcoomes@4070 | 107 | fputc('\n', err); |
kamg@2225 | 108 | } |
duke@435 | 109 | if (BreakAtWarning) BREAKPOINT; |
duke@435 | 110 | } |
duke@435 | 111 | |
duke@435 | 112 | #ifndef PRODUCT |
duke@435 | 113 | |
duke@435 | 114 | #define is_token_break(ch) (isspace(ch) || (ch) == ',') |
duke@435 | 115 | |
duke@435 | 116 | static const char* last_file_name = NULL; |
duke@435 | 117 | static int last_line_no = -1; |
duke@435 | 118 | |
duke@435 | 119 | // assert/guarantee/... may happen very early during VM initialization. |
duke@435 | 120 | // Don't rely on anything that is initialized by Threads::create_vm(). For |
duke@435 | 121 | // example, don't use tty. |
jcoomes@1845 | 122 | bool error_is_suppressed(const char* file_name, int line_no) { |
duke@435 | 123 | // The following 1-element cache requires that passed-in |
duke@435 | 124 | // file names are always only constant literals. |
duke@435 | 125 | if (file_name == last_file_name && line_no == last_line_no) return true; |
duke@435 | 126 | |
duke@435 | 127 | int file_name_len = (int)strlen(file_name); |
duke@435 | 128 | char separator = os::file_separator()[0]; |
duke@435 | 129 | const char* base_name = strrchr(file_name, separator); |
duke@435 | 130 | if (base_name == NULL) |
duke@435 | 131 | base_name = file_name; |
duke@435 | 132 | |
duke@435 | 133 | // scan the SuppressErrorAt option |
duke@435 | 134 | const char* cp = SuppressErrorAt; |
duke@435 | 135 | for (;;) { |
duke@435 | 136 | const char* sfile; |
duke@435 | 137 | int sfile_len; |
duke@435 | 138 | int sline; |
duke@435 | 139 | bool noisy; |
duke@435 | 140 | while ((*cp) != '\0' && is_token_break(*cp)) cp++; |
duke@435 | 141 | if ((*cp) == '\0') break; |
duke@435 | 142 | sfile = cp; |
duke@435 | 143 | while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++; |
duke@435 | 144 | sfile_len = cp - sfile; |
duke@435 | 145 | if ((*cp) == ':') cp++; |
duke@435 | 146 | sline = 0; |
duke@435 | 147 | while ((*cp) != '\0' && isdigit(*cp)) { |
duke@435 | 148 | sline *= 10; |
duke@435 | 149 | sline += (*cp) - '0'; |
duke@435 | 150 | cp++; |
duke@435 | 151 | } |
duke@435 | 152 | // "file:line!" means the assert suppression is not silent |
duke@435 | 153 | noisy = ((*cp) == '!'); |
duke@435 | 154 | while ((*cp) != '\0' && !is_token_break(*cp)) cp++; |
duke@435 | 155 | // match the line |
duke@435 | 156 | if (sline != 0) { |
duke@435 | 157 | if (sline != line_no) continue; |
duke@435 | 158 | } |
duke@435 | 159 | // match the file |
duke@435 | 160 | if (sfile_len > 0) { |
duke@435 | 161 | const char* look = file_name; |
duke@435 | 162 | const char* look_max = file_name + file_name_len - sfile_len; |
duke@435 | 163 | const char* foundp; |
duke@435 | 164 | bool match = false; |
duke@435 | 165 | while (!match |
duke@435 | 166 | && (foundp = strchr(look, sfile[0])) != NULL |
duke@435 | 167 | && foundp <= look_max) { |
duke@435 | 168 | match = true; |
duke@435 | 169 | for (int i = 1; i < sfile_len; i++) { |
duke@435 | 170 | if (sfile[i] != foundp[i]) { |
duke@435 | 171 | match = false; |
duke@435 | 172 | break; |
duke@435 | 173 | } |
duke@435 | 174 | } |
duke@435 | 175 | look = foundp + 1; |
duke@435 | 176 | } |
duke@435 | 177 | if (!match) continue; |
duke@435 | 178 | } |
duke@435 | 179 | // got a match! |
duke@435 | 180 | if (noisy) { |
duke@435 | 181 | fdStream out(defaultStream::output_fd()); |
duke@435 | 182 | out.print_raw("[error suppressed at "); |
duke@435 | 183 | out.print_raw(base_name); |
duke@435 | 184 | char buf[16]; |
duke@435 | 185 | jio_snprintf(buf, sizeof(buf), ":%d]", line_no); |
duke@435 | 186 | out.print_raw_cr(buf); |
duke@435 | 187 | } else { |
duke@435 | 188 | // update 1-element cache for fast silent matches |
duke@435 | 189 | last_file_name = file_name; |
duke@435 | 190 | last_line_no = line_no; |
duke@435 | 191 | } |
duke@435 | 192 | return true; |
duke@435 | 193 | } |
duke@435 | 194 | |
duke@435 | 195 | if (!is_error_reported()) { |
duke@435 | 196 | // print a friendly hint: |
duke@435 | 197 | fdStream out(defaultStream::output_fd()); |
duke@435 | 198 | out.print_raw_cr("# To suppress the following error report, specify this argument"); |
duke@435 | 199 | out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt="); |
duke@435 | 200 | out.print_raw (base_name); |
duke@435 | 201 | char buf[16]; |
duke@435 | 202 | jio_snprintf(buf, sizeof(buf), ":%d", line_no); |
duke@435 | 203 | out.print_raw_cr(buf); |
duke@435 | 204 | } |
duke@435 | 205 | return false; |
duke@435 | 206 | } |
duke@435 | 207 | |
duke@435 | 208 | #undef is_token_break |
duke@435 | 209 | |
duke@435 | 210 | #else |
duke@435 | 211 | |
duke@435 | 212 | // Place-holder for non-existent suppression check: |
jcoomes@1845 | 213 | #define error_is_suppressed(file_name, line_no) (false) |
duke@435 | 214 | |
dcubed@3202 | 215 | #endif // !PRODUCT |
duke@435 | 216 | |
jcoomes@1845 | 217 | void report_vm_error(const char* file, int line, const char* error_msg, |
jcoomes@1845 | 218 | const char* detail_msg) |
jcoomes@1845 | 219 | { |
jcoomes@1845 | 220 | if (Debugging || error_is_suppressed(file, line)) return; |
jcoomes@1845 | 221 | Thread* const thread = ThreadLocalStorage::get_thread_slow(); |
jcoomes@1845 | 222 | VMError err(thread, file, line, error_msg, detail_msg); |
duke@435 | 223 | err.report_and_die(); |
duke@435 | 224 | } |
duke@435 | 225 | |
jcoomes@1845 | 226 | void report_fatal(const char* file, int line, const char* message) |
jcoomes@1845 | 227 | { |
jcoomes@1845 | 228 | report_vm_error(file, line, "fatal error", message); |
duke@435 | 229 | } |
duke@435 | 230 | |
duke@435 | 231 | // Used by report_vm_out_of_memory to detect recursion. |
duke@435 | 232 | static jint _exiting_out_of_mem = 0; |
duke@435 | 233 | |
jcoomes@1845 | 234 | void report_vm_out_of_memory(const char* file, int line, size_t size, |
jcoomes@1845 | 235 | const char* message) { |
coleenp@2418 | 236 | if (Debugging) return; |
duke@435 | 237 | |
duke@435 | 238 | // We try to gather additional information for the first out of memory |
duke@435 | 239 | // error only; gathering additional data might cause an allocation and a |
duke@435 | 240 | // recursive out_of_memory condition. |
duke@435 | 241 | |
duke@435 | 242 | const jint exiting = 1; |
duke@435 | 243 | // If we succeed in changing the value, we're the first one in. |
duke@435 | 244 | bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting; |
duke@435 | 245 | |
duke@435 | 246 | if (first_time_here) { |
duke@435 | 247 | Thread* thread = ThreadLocalStorage::get_thread_slow(); |
jcoomes@1845 | 248 | VMError(thread, file, line, size, message).report_and_die(); |
duke@435 | 249 | } |
poonam@662 | 250 | |
poonam@662 | 251 | // Dump core and abort |
poonam@662 | 252 | vm_abort(true); |
duke@435 | 253 | } |
duke@435 | 254 | |
jcoomes@1845 | 255 | void report_should_not_call(const char* file, int line) { |
jcoomes@1845 | 256 | report_vm_error(file, line, "ShouldNotCall()"); |
duke@435 | 257 | } |
duke@435 | 258 | |
jcoomes@1845 | 259 | void report_should_not_reach_here(const char* file, int line) { |
jcoomes@1845 | 260 | report_vm_error(file, line, "ShouldNotReachHere()"); |
duke@435 | 261 | } |
duke@435 | 262 | |
coleenp@4037 | 263 | void report_should_not_reach_here2(const char* file, int line, const char* message) { |
coleenp@4037 | 264 | report_vm_error(file, line, "ShouldNotReachHere()", message); |
coleenp@4037 | 265 | } |
coleenp@4037 | 266 | |
jcoomes@1845 | 267 | void report_unimplemented(const char* file, int line) { |
jcoomes@1845 | 268 | report_vm_error(file, line, "Unimplemented()"); |
duke@435 | 269 | } |
duke@435 | 270 | |
jcoomes@1845 | 271 | void report_untested(const char* file, int line, const char* message) { |
duke@435 | 272 | #ifndef PRODUCT |
jcoomes@1845 | 273 | warning("Untested: %s in %s: %d\n", message, file, line); |
dcubed@3202 | 274 | #endif // !PRODUCT |
duke@435 | 275 | } |
duke@435 | 276 | |
coleenp@2497 | 277 | void report_out_of_shared_space(SharedSpaceType shared_space) { |
coleenp@2497 | 278 | static const char* name[] = { |
coleenp@4037 | 279 | "native memory for metadata", |
coleenp@2497 | 280 | "shared read only space", |
coleenp@2497 | 281 | "shared read write space", |
coleenp@2497 | 282 | "shared miscellaneous data space" |
coleenp@2497 | 283 | }; |
coleenp@2497 | 284 | static const char* flag[] = { |
coleenp@4037 | 285 | "Metaspace", |
coleenp@2497 | 286 | "SharedReadOnlySize", |
coleenp@2497 | 287 | "SharedReadWriteSize", |
coleenp@2497 | 288 | "SharedMiscDataSize" |
coleenp@2497 | 289 | }; |
coleenp@2497 | 290 | |
coleenp@2497 | 291 | warning("\nThe %s is not large enough\n" |
coleenp@2497 | 292 | "to preload requested classes. Use -XX:%s=\n" |
coleenp@2497 | 293 | "to increase the initial size of %s.\n", |
coleenp@2497 | 294 | name[shared_space], flag[shared_space], name[shared_space]); |
coleenp@2497 | 295 | exit(2); |
coleenp@2497 | 296 | } |
coleenp@2497 | 297 | |
duke@435 | 298 | void report_java_out_of_memory(const char* message) { |
duke@435 | 299 | static jint out_of_memory_reported = 0; |
duke@435 | 300 | |
duke@435 | 301 | // A number of threads may attempt to report OutOfMemoryError at around the |
duke@435 | 302 | // same time. To avoid dumping the heap or executing the data collection |
duke@435 | 303 | // commands multiple times we just do it once when the first threads reports |
duke@435 | 304 | // the error. |
duke@435 | 305 | if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) { |
duke@435 | 306 | // create heap dump before OnOutOfMemoryError commands are executed |
duke@435 | 307 | if (HeapDumpOnOutOfMemoryError) { |
duke@435 | 308 | tty->print_cr("java.lang.OutOfMemoryError: %s", message); |
thurka@2130 | 309 | HeapDumper::dump_heap_from_oome(); |
duke@435 | 310 | } |
duke@435 | 311 | |
duke@435 | 312 | if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { |
duke@435 | 313 | VMError err(message); |
duke@435 | 314 | err.report_java_out_of_memory(); |
duke@435 | 315 | } |
duke@435 | 316 | } |
duke@435 | 317 | } |
duke@435 | 318 | |
duke@435 | 319 | static bool error_reported = false; |
duke@435 | 320 | |
duke@435 | 321 | // call this when the VM is dying--it might loosen some asserts |
duke@435 | 322 | void set_error_reported() { |
duke@435 | 323 | error_reported = true; |
duke@435 | 324 | } |
duke@435 | 325 | |
duke@435 | 326 | bool is_error_reported() { |
duke@435 | 327 | return error_reported; |
duke@435 | 328 | } |
duke@435 | 329 | |
jcoomes@1845 | 330 | #ifndef PRODUCT |
jcoomes@1845 | 331 | #include <signal.h> |
jcoomes@1845 | 332 | |
jcoomes@1845 | 333 | void test_error_handler(size_t test_num) |
jcoomes@1845 | 334 | { |
jcoomes@1845 | 335 | if (test_num == 0) return; |
jcoomes@1845 | 336 | |
jcoomes@1845 | 337 | // If asserts are disabled, use the corresponding guarantee instead. |
jcoomes@1845 | 338 | size_t n = test_num; |
jcoomes@1845 | 339 | NOT_DEBUG(if (n <= 2) n += 2); |
jcoomes@1845 | 340 | |
jcoomes@1845 | 341 | const char* const str = "hello"; |
jcoomes@1845 | 342 | const size_t num = (size_t)os::vm_page_size(); |
jcoomes@1845 | 343 | |
jcoomes@1845 | 344 | const char* const eol = os::line_separator(); |
jcoomes@1845 | 345 | const char* const msg = "this message should be truncated during formatting"; |
jcoomes@1845 | 346 | |
jcoomes@1845 | 347 | // Keep this in sync with test/runtime/6888954/vmerrors.sh. |
jcoomes@1845 | 348 | switch (n) { |
jcoomes@1845 | 349 | case 1: assert(str == NULL, "expected null"); |
jcoomes@1845 | 350 | case 2: assert(num == 1023 && *str == 'X', |
jcoomes@1845 | 351 | err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
jcoomes@1845 | 352 | case 3: guarantee(str == NULL, "expected null"); |
jcoomes@1845 | 353 | case 4: guarantee(num == 1023 && *str == 'X', |
jcoomes@1845 | 354 | err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
jcoomes@1845 | 355 | case 5: fatal("expected null"); |
jcoomes@1845 | 356 | case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str)); |
jcoomes@1845 | 357 | case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# " |
jcoomes@1845 | 358 | "%s%s# %s%s# %s%s# %s%s# %s%s# " |
jcoomes@1845 | 359 | "%s%s# %s%s# %s%s# %s%s# %s", |
jcoomes@1845 | 360 | msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
jcoomes@1845 | 361 | msg, eol, msg, eol, msg, eol, msg, eol, msg, eol, |
jcoomes@1845 | 362 | msg, eol, msg, eol, msg, eol, msg, eol, msg)); |
jcoomes@1845 | 363 | case 8: vm_exit_out_of_memory(num, "ChunkPool::allocate"); |
jcoomes@1845 | 364 | case 9: ShouldNotCallThis(); |
jcoomes@1845 | 365 | case 10: ShouldNotReachHere(); |
jcoomes@1845 | 366 | case 11: Unimplemented(); |
jcoomes@1845 | 367 | // This is last because it does not generate an hs_err* file on Windows. |
jcoomes@1845 | 368 | case 12: os::signal_raise(SIGSEGV); |
jcoomes@1845 | 369 | |
jcoomes@1845 | 370 | default: ShouldNotReachHere(); |
jcoomes@1845 | 371 | } |
jcoomes@1845 | 372 | } |
dcubed@3202 | 373 | #endif // !PRODUCT |
jcoomes@1845 | 374 | |
duke@435 | 375 | // ------ helper functions for debugging go here ------------ |
duke@435 | 376 | |
duke@435 | 377 | // All debug entries should be wrapped with a stack allocated |
duke@435 | 378 | // Command object. It makes sure a resource mark is set and |
duke@435 | 379 | // flushes the logfile to prevent file sharing problems. |
duke@435 | 380 | |
duke@435 | 381 | class Command : public StackObj { |
duke@435 | 382 | private: |
duke@435 | 383 | ResourceMark rm; |
duke@435 | 384 | ResetNoHandleMark rnhm; |
duke@435 | 385 | HandleMark hm; |
duke@435 | 386 | bool debug_save; |
duke@435 | 387 | public: |
duke@435 | 388 | static int level; |
duke@435 | 389 | Command(const char* str) { |
duke@435 | 390 | debug_save = Debugging; |
duke@435 | 391 | Debugging = true; |
duke@435 | 392 | if (level++ > 0) return; |
duke@435 | 393 | tty->cr(); |
duke@435 | 394 | tty->print_cr("\"Executing %s\"", str); |
duke@435 | 395 | } |
duke@435 | 396 | |
dcubed@3202 | 397 | ~Command() { |
dcubed@3202 | 398 | tty->flush(); |
dcubed@3202 | 399 | Debugging = debug_save; |
dcubed@3202 | 400 | level--; |
dcubed@3202 | 401 | } |
duke@435 | 402 | }; |
duke@435 | 403 | |
duke@435 | 404 | int Command::level = 0; |
duke@435 | 405 | |
dcubed@3202 | 406 | #ifndef PRODUCT |
dcubed@3202 | 407 | |
duke@435 | 408 | extern "C" void blob(CodeBlob* cb) { |
duke@435 | 409 | Command c("blob"); |
duke@435 | 410 | cb->print(); |
duke@435 | 411 | } |
duke@435 | 412 | |
duke@435 | 413 | |
duke@435 | 414 | extern "C" void dump_vtable(address p) { |
duke@435 | 415 | Command c("dump_vtable"); |
coleenp@4037 | 416 | Klass* k = (Klass*)p; |
coleenp@4037 | 417 | InstanceKlass::cast(k)->vtable()->print(); |
duke@435 | 418 | } |
duke@435 | 419 | |
duke@435 | 420 | |
duke@435 | 421 | extern "C" void nm(intptr_t p) { |
duke@435 | 422 | // Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability) |
duke@435 | 423 | Command c("nm"); |
duke@435 | 424 | CodeBlob* cb = CodeCache::find_blob((address)p); |
duke@435 | 425 | if (cb == NULL) { |
duke@435 | 426 | tty->print_cr("NULL"); |
duke@435 | 427 | } else { |
duke@435 | 428 | cb->print(); |
duke@435 | 429 | } |
duke@435 | 430 | } |
duke@435 | 431 | |
duke@435 | 432 | |
duke@435 | 433 | extern "C" void disnm(intptr_t p) { |
duke@435 | 434 | Command c("disnm"); |
duke@435 | 435 | CodeBlob* cb = CodeCache::find_blob((address) p); |
twisti@2350 | 436 | nmethod* nm = cb->as_nmethod_or_null(); |
twisti@2350 | 437 | if (nm) { |
twisti@2350 | 438 | nm->print(); |
twisti@2350 | 439 | Disassembler::decode(nm); |
twisti@2350 | 440 | } else { |
twisti@2350 | 441 | cb->print(); |
twisti@2350 | 442 | Disassembler::decode(cb); |
twisti@2350 | 443 | } |
duke@435 | 444 | } |
duke@435 | 445 | |
duke@435 | 446 | |
duke@435 | 447 | extern "C" void printnm(intptr_t p) { |
duke@435 | 448 | char buffer[256]; |
duke@435 | 449 | sprintf(buffer, "printnm: " INTPTR_FORMAT, p); |
duke@435 | 450 | Command c(buffer); |
duke@435 | 451 | CodeBlob* cb = CodeCache::find_blob((address) p); |
duke@435 | 452 | if (cb->is_nmethod()) { |
duke@435 | 453 | nmethod* nm = (nmethod*)cb; |
duke@435 | 454 | nm->print_nmethod(true); |
duke@435 | 455 | } |
duke@435 | 456 | } |
duke@435 | 457 | |
duke@435 | 458 | |
duke@435 | 459 | extern "C" void universe() { |
duke@435 | 460 | Command c("universe"); |
duke@435 | 461 | Universe::print(); |
duke@435 | 462 | } |
duke@435 | 463 | |
duke@435 | 464 | |
duke@435 | 465 | extern "C" void verify() { |
duke@435 | 466 | // try to run a verify on the entire system |
duke@435 | 467 | // note: this may not be safe if we're not at a safepoint; for debugging, |
duke@435 | 468 | // this manipulates the safepoint settings to avoid assertion failures |
duke@435 | 469 | Command c("universe verify"); |
duke@435 | 470 | bool safe = SafepointSynchronize::is_at_safepoint(); |
duke@435 | 471 | if (!safe) { |
duke@435 | 472 | tty->print_cr("warning: not at safepoint -- verify may fail"); |
duke@435 | 473 | SafepointSynchronize::set_is_at_safepoint(); |
duke@435 | 474 | } |
duke@435 | 475 | // Ensure Eden top is correct before verification |
duke@435 | 476 | Universe::heap()->prepare_for_verify(); |
johnc@4176 | 477 | Universe::verify(); |
duke@435 | 478 | if (!safe) SafepointSynchronize::set_is_not_at_safepoint(); |
duke@435 | 479 | } |
duke@435 | 480 | |
duke@435 | 481 | |
duke@435 | 482 | extern "C" void pp(void* p) { |
duke@435 | 483 | Command c("pp"); |
duke@435 | 484 | FlagSetting fl(PrintVMMessages, true); |
never@2868 | 485 | FlagSetting f2(DisplayVMOutput, true); |
duke@435 | 486 | if (Universe::heap()->is_in(p)) { |
duke@435 | 487 | oop obj = oop(p); |
duke@435 | 488 | obj->print(); |
duke@435 | 489 | } else { |
dcubed@3202 | 490 | tty->print(PTR_FORMAT, p); |
duke@435 | 491 | } |
duke@435 | 492 | } |
duke@435 | 493 | |
duke@435 | 494 | |
duke@435 | 495 | // pv: print vm-printable object |
duke@435 | 496 | extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); } |
duke@435 | 497 | extern "C" void findpc(intptr_t x); |
duke@435 | 498 | |
dcubed@3202 | 499 | #endif // !PRODUCT |
dcubed@3202 | 500 | |
duke@435 | 501 | extern "C" void ps() { // print stack |
dcubed@3202 | 502 | if (Thread::current() == NULL) return; |
duke@435 | 503 | Command c("ps"); |
duke@435 | 504 | |
duke@435 | 505 | |
duke@435 | 506 | // Prints the stack of the current Java thread |
duke@435 | 507 | JavaThread* p = JavaThread::active(); |
duke@435 | 508 | tty->print(" for thread: "); |
duke@435 | 509 | p->print(); |
duke@435 | 510 | tty->cr(); |
duke@435 | 511 | |
duke@435 | 512 | if (p->has_last_Java_frame()) { |
duke@435 | 513 | // If the last_Java_fp is set we are in C land and |
duke@435 | 514 | // can call the standard stack_trace function. |
dcubed@3202 | 515 | #ifdef PRODUCT |
dcubed@3202 | 516 | p->print_stack(); |
dcubed@3202 | 517 | } else { |
dcubed@3202 | 518 | tty->print_cr("Cannot find the last Java frame, printing stack disabled."); |
dcubed@3202 | 519 | #else // !PRODUCT |
duke@435 | 520 | p->trace_stack(); |
duke@435 | 521 | } else { |
duke@435 | 522 | frame f = os::current_frame(); |
duke@435 | 523 | RegisterMap reg_map(p); |
duke@435 | 524 | f = f.sender(®_map); |
duke@435 | 525 | tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id()); |
duke@435 | 526 | p->trace_stack_from(vframe::new_vframe(&f, ®_map, p)); |
duke@435 | 527 | pd_ps(f); |
dcubed@3202 | 528 | #endif // PRODUCT |
duke@435 | 529 | } |
duke@435 | 530 | |
duke@435 | 531 | } |
duke@435 | 532 | |
never@2868 | 533 | extern "C" void pfl() { |
never@2868 | 534 | // print frame layout |
never@2868 | 535 | Command c("pfl"); |
never@2868 | 536 | JavaThread* p = JavaThread::active(); |
never@2868 | 537 | tty->print(" for thread: "); |
never@2868 | 538 | p->print(); |
never@2868 | 539 | tty->cr(); |
never@2868 | 540 | if (p->has_last_Java_frame()) { |
never@2868 | 541 | p->print_frame_layout(); |
never@2868 | 542 | } |
never@2868 | 543 | } |
duke@435 | 544 | |
dcubed@3202 | 545 | #ifndef PRODUCT |
dcubed@3202 | 546 | |
duke@435 | 547 | extern "C" void psf() { // print stack frames |
duke@435 | 548 | { |
duke@435 | 549 | Command c("psf"); |
duke@435 | 550 | JavaThread* p = JavaThread::active(); |
duke@435 | 551 | tty->print(" for thread: "); |
duke@435 | 552 | p->print(); |
duke@435 | 553 | tty->cr(); |
duke@435 | 554 | if (p->has_last_Java_frame()) { |
duke@435 | 555 | p->trace_frames(); |
duke@435 | 556 | } |
duke@435 | 557 | } |
duke@435 | 558 | } |
duke@435 | 559 | |
duke@435 | 560 | |
duke@435 | 561 | extern "C" void threads() { |
duke@435 | 562 | Command c("threads"); |
duke@435 | 563 | Threads::print(false, true); |
duke@435 | 564 | } |
duke@435 | 565 | |
duke@435 | 566 | |
duke@435 | 567 | extern "C" void psd() { |
duke@435 | 568 | Command c("psd"); |
duke@435 | 569 | SystemDictionary::print(); |
duke@435 | 570 | } |
duke@435 | 571 | |
duke@435 | 572 | |
duke@435 | 573 | extern "C" void safepoints() { |
duke@435 | 574 | Command c("safepoints"); |
duke@435 | 575 | SafepointSynchronize::print_state(); |
duke@435 | 576 | } |
duke@435 | 577 | |
dcubed@3202 | 578 | #endif // !PRODUCT |
duke@435 | 579 | |
duke@435 | 580 | extern "C" void pss() { // print all stacks |
dcubed@3202 | 581 | if (Thread::current() == NULL) return; |
duke@435 | 582 | Command c("pss"); |
dcubed@3202 | 583 | Threads::print(true, PRODUCT_ONLY(false) NOT_PRODUCT(true)); |
duke@435 | 584 | } |
duke@435 | 585 | |
dcubed@3202 | 586 | #ifndef PRODUCT |
duke@435 | 587 | |
duke@435 | 588 | extern "C" void debug() { // to set things up for compiler debugging |
duke@435 | 589 | Command c("debug"); |
duke@435 | 590 | WizardMode = true; |
duke@435 | 591 | PrintVMMessages = PrintCompilation = true; |
duke@435 | 592 | PrintInlining = PrintAssembly = true; |
duke@435 | 593 | tty->flush(); |
duke@435 | 594 | } |
duke@435 | 595 | |
duke@435 | 596 | |
duke@435 | 597 | extern "C" void ndebug() { // undo debug() |
duke@435 | 598 | Command c("ndebug"); |
duke@435 | 599 | PrintCompilation = false; |
duke@435 | 600 | PrintInlining = PrintAssembly = false; |
duke@435 | 601 | tty->flush(); |
duke@435 | 602 | } |
duke@435 | 603 | |
duke@435 | 604 | |
duke@435 | 605 | extern "C" void flush() { |
duke@435 | 606 | Command c("flush"); |
duke@435 | 607 | tty->flush(); |
duke@435 | 608 | } |
duke@435 | 609 | |
never@3571 | 610 | extern "C" void events() { |
never@3571 | 611 | Command c("events"); |
never@3571 | 612 | Events::print(); |
never@3571 | 613 | } |
duke@435 | 614 | |
coleenp@4037 | 615 | extern "C" Method* findm(intptr_t pc) { |
duke@435 | 616 | Command c("findm"); |
duke@435 | 617 | nmethod* nm = CodeCache::find_nmethod((address)pc); |
coleenp@4037 | 618 | return (nm == NULL) ? (Method*)NULL : nm->method(); |
duke@435 | 619 | } |
duke@435 | 620 | |
duke@435 | 621 | |
duke@435 | 622 | extern "C" nmethod* findnm(intptr_t addr) { |
duke@435 | 623 | Command c("findnm"); |
duke@435 | 624 | return CodeCache::find_nmethod((address)addr); |
duke@435 | 625 | } |
duke@435 | 626 | |
duke@435 | 627 | static address same_page(address x, address y) { |
duke@435 | 628 | intptr_t page_bits = -os::vm_page_size(); |
duke@435 | 629 | if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) { |
duke@435 | 630 | return x; |
duke@435 | 631 | } else if (x > y) { |
duke@435 | 632 | return (address)(intptr_t(y) | ~page_bits) + 1; |
duke@435 | 633 | } else { |
duke@435 | 634 | return (address)(intptr_t(y) & page_bits); |
duke@435 | 635 | } |
duke@435 | 636 | } |
duke@435 | 637 | |
duke@435 | 638 | |
duke@435 | 639 | // Another interface that isn't ambiguous in dbx. |
duke@435 | 640 | // Can we someday rename the other find to hsfind? |
duke@435 | 641 | extern "C" void hsfind(intptr_t x) { |
duke@435 | 642 | Command c("hsfind"); |
bobv@2036 | 643 | os::print_location(tty, x, false); |
duke@435 | 644 | } |
duke@435 | 645 | |
duke@435 | 646 | |
duke@435 | 647 | extern "C" void find(intptr_t x) { |
duke@435 | 648 | Command c("find"); |
bobv@2036 | 649 | os::print_location(tty, x, false); |
duke@435 | 650 | } |
duke@435 | 651 | |
duke@435 | 652 | |
duke@435 | 653 | extern "C" void findpc(intptr_t x) { |
duke@435 | 654 | Command c("findpc"); |
bobv@2036 | 655 | os::print_location(tty, x, true); |
duke@435 | 656 | } |
duke@435 | 657 | |
duke@435 | 658 | |
coleenp@4037 | 659 | // Need method pointer to find bcp, when not in permgen. |
coleenp@4037 | 660 | extern "C" void findbcp(intptr_t method, intptr_t bcp) { |
coleenp@4037 | 661 | Command c("findbcp"); |
coleenp@4037 | 662 | Method* mh = (Method*)method; |
coleenp@4037 | 663 | if (!mh->is_native()) { |
coleenp@4037 | 664 | tty->print_cr("bci_from(%p) = %d; print_codes():", |
coleenp@4037 | 665 | mh, mh->bci_from(address(bcp))); |
coleenp@4037 | 666 | mh->print_codes_on(tty); |
coleenp@4037 | 667 | } |
coleenp@4037 | 668 | } |
coleenp@4037 | 669 | |
duke@435 | 670 | // int versions of all methods to avoid having to type type casts in the debugger |
duke@435 | 671 | |
duke@435 | 672 | void pp(intptr_t p) { pp((void*)p); } |
duke@435 | 673 | void pp(oop p) { pp((void*)p); } |
duke@435 | 674 | |
duke@435 | 675 | void help() { |
duke@435 | 676 | Command c("help"); |
duke@435 | 677 | tty->print_cr("basic"); |
duke@435 | 678 | tty->print_cr(" pp(void* p) - try to make sense of p"); |
duke@435 | 679 | tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()"); |
duke@435 | 680 | tty->print_cr(" ps() - print current thread stack"); |
duke@435 | 681 | tty->print_cr(" pss() - print all thread stacks"); |
coleenp@4037 | 682 | tty->print_cr(" pm(int pc) - print Method* given compiled PC"); |
coleenp@4037 | 683 | tty->print_cr(" findm(intptr_t pc) - finds Method*"); |
duke@435 | 684 | tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it"); |
duke@435 | 685 | |
duke@435 | 686 | tty->print_cr("misc."); |
duke@435 | 687 | tty->print_cr(" flush() - flushes the log file"); |
never@3571 | 688 | tty->print_cr(" events() - dump events from ring buffers"); |
duke@435 | 689 | |
duke@435 | 690 | |
duke@435 | 691 | tty->print_cr("compiler debugging"); |
duke@435 | 692 | tty->print_cr(" debug() - to set things up for compiler debugging"); |
duke@435 | 693 | tty->print_cr(" ndebug() - undo debug"); |
duke@435 | 694 | } |
duke@435 | 695 | |
duke@435 | 696 | #if 0 |
duke@435 | 697 | |
duke@435 | 698 | // BobV's command parser for debugging on windows when nothing else works. |
duke@435 | 699 | |
duke@435 | 700 | enum CommandID { |
duke@435 | 701 | CMDID_HELP, |
duke@435 | 702 | CMDID_QUIT, |
duke@435 | 703 | CMDID_HSFIND, |
duke@435 | 704 | CMDID_PSS, |
duke@435 | 705 | CMDID_PS, |
duke@435 | 706 | CMDID_PSF, |
duke@435 | 707 | CMDID_FINDM, |
duke@435 | 708 | CMDID_FINDNM, |
duke@435 | 709 | CMDID_PP, |
duke@435 | 710 | CMDID_BPT, |
duke@435 | 711 | CMDID_EXIT, |
duke@435 | 712 | CMDID_VERIFY, |
duke@435 | 713 | CMDID_THREADS, |
duke@435 | 714 | CMDID_ILLEGAL = 99 |
duke@435 | 715 | }; |
duke@435 | 716 | |
duke@435 | 717 | struct CommandParser { |
duke@435 | 718 | char *name; |
duke@435 | 719 | CommandID code; |
duke@435 | 720 | char *description; |
duke@435 | 721 | }; |
duke@435 | 722 | |
duke@435 | 723 | struct CommandParser CommandList[] = { |
duke@435 | 724 | (char *)"help", CMDID_HELP, " Dump this list", |
duke@435 | 725 | (char *)"quit", CMDID_QUIT, " Return from this routine", |
duke@435 | 726 | (char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address", |
duke@435 | 727 | (char *)"ps", CMDID_PS, " Print Current Thread Stack Trace", |
duke@435 | 728 | (char *)"pss", CMDID_PSS, " Print All Thread Stack Trace", |
duke@435 | 729 | (char *)"psf", CMDID_PSF, " Print All Stack Frames", |
coleenp@4037 | 730 | (char *)"findm", CMDID_FINDM, " Find a Method* from a PC", |
duke@435 | 731 | (char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC", |
duke@435 | 732 | (char *)"pp", CMDID_PP, " Find out something about a pointer", |
duke@435 | 733 | (char *)"break", CMDID_BPT, " Execute a breakpoint", |
duke@435 | 734 | (char *)"exitvm", CMDID_EXIT, "Exit the VM", |
duke@435 | 735 | (char *)"verify", CMDID_VERIFY, "Perform a Heap Verify", |
duke@435 | 736 | (char *)"thread", CMDID_THREADS, "Dump Info on all Threads", |
duke@435 | 737 | (char *)0, CMDID_ILLEGAL |
duke@435 | 738 | }; |
duke@435 | 739 | |
duke@435 | 740 | |
duke@435 | 741 | // get_debug_command() |
duke@435 | 742 | // |
duke@435 | 743 | // Read a command from standard input. |
duke@435 | 744 | // This is useful when you have a debugger |
duke@435 | 745 | // which doesn't support calling into functions. |
duke@435 | 746 | // |
duke@435 | 747 | void get_debug_command() |
duke@435 | 748 | { |
duke@435 | 749 | ssize_t count; |
duke@435 | 750 | int i,j; |
duke@435 | 751 | bool gotcommand; |
duke@435 | 752 | intptr_t addr; |
duke@435 | 753 | char buffer[256]; |
duke@435 | 754 | nmethod *nm; |
coleenp@4037 | 755 | Method* m; |
duke@435 | 756 | |
duke@435 | 757 | tty->print_cr("You have entered the diagnostic command interpreter"); |
duke@435 | 758 | tty->print("The supported commands are:\n"); |
duke@435 | 759 | for ( i=0; ; i++ ) { |
duke@435 | 760 | if ( CommandList[i].code == CMDID_ILLEGAL ) |
duke@435 | 761 | break; |
duke@435 | 762 | tty->print_cr(" %s \n", CommandList[i].name ); |
duke@435 | 763 | } |
duke@435 | 764 | |
duke@435 | 765 | while ( 1 ) { |
duke@435 | 766 | gotcommand = false; |
duke@435 | 767 | tty->print("Please enter a command: "); |
duke@435 | 768 | count = scanf("%s", buffer) ; |
duke@435 | 769 | if ( count >=0 ) { |
duke@435 | 770 | for ( i=0; ; i++ ) { |
duke@435 | 771 | if ( CommandList[i].code == CMDID_ILLEGAL ) { |
duke@435 | 772 | if (!gotcommand) tty->print("Invalid command, please try again\n"); |
duke@435 | 773 | break; |
duke@435 | 774 | } |
duke@435 | 775 | if ( strcmp(buffer, CommandList[i].name) == 0 ) { |
duke@435 | 776 | gotcommand = true; |
duke@435 | 777 | switch ( CommandList[i].code ) { |
duke@435 | 778 | case CMDID_PS: |
duke@435 | 779 | ps(); |
duke@435 | 780 | break; |
duke@435 | 781 | case CMDID_PSS: |
duke@435 | 782 | pss(); |
duke@435 | 783 | break; |
duke@435 | 784 | case CMDID_PSF: |
duke@435 | 785 | psf(); |
duke@435 | 786 | break; |
duke@435 | 787 | case CMDID_FINDM: |
duke@435 | 788 | tty->print("Please enter the hex addr to pass to findm: "); |
duke@435 | 789 | scanf("%I64X", &addr); |
coleenp@4037 | 790 | m = (Method*)findm(addr); |
duke@435 | 791 | tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m); |
duke@435 | 792 | break; |
duke@435 | 793 | case CMDID_FINDNM: |
duke@435 | 794 | tty->print("Please enter the hex addr to pass to findnm: "); |
duke@435 | 795 | scanf("%I64X", &addr); |
duke@435 | 796 | nm = (nmethod*)findnm(addr); |
duke@435 | 797 | tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm); |
duke@435 | 798 | break; |
duke@435 | 799 | case CMDID_PP: |
duke@435 | 800 | tty->print("Please enter the hex addr to pass to pp: "); |
duke@435 | 801 | scanf("%I64X", &addr); |
duke@435 | 802 | pp((void*)addr); |
duke@435 | 803 | break; |
duke@435 | 804 | case CMDID_EXIT: |
duke@435 | 805 | exit(0); |
duke@435 | 806 | case CMDID_HELP: |
duke@435 | 807 | tty->print("Here are the supported commands: "); |
duke@435 | 808 | for ( j=0; ; j++ ) { |
duke@435 | 809 | if ( CommandList[j].code == CMDID_ILLEGAL ) |
duke@435 | 810 | break; |
duke@435 | 811 | tty->print_cr(" %s -- %s\n", CommandList[j].name, |
duke@435 | 812 | CommandList[j].description ); |
duke@435 | 813 | } |
duke@435 | 814 | break; |
duke@435 | 815 | case CMDID_QUIT: |
duke@435 | 816 | return; |
duke@435 | 817 | break; |
duke@435 | 818 | case CMDID_BPT: |
duke@435 | 819 | BREAKPOINT; |
duke@435 | 820 | break; |
duke@435 | 821 | case CMDID_VERIFY: |
duke@435 | 822 | verify();; |
duke@435 | 823 | break; |
duke@435 | 824 | case CMDID_THREADS: |
duke@435 | 825 | threads();; |
duke@435 | 826 | break; |
duke@435 | 827 | case CMDID_HSFIND: |
duke@435 | 828 | tty->print("Please enter the hex addr to pass to hsfind: "); |
duke@435 | 829 | scanf("%I64X", &addr); |
duke@435 | 830 | tty->print("Calling hsfind(0x%I64X)\n", addr); |
duke@435 | 831 | hsfind(addr); |
duke@435 | 832 | break; |
duke@435 | 833 | default: |
duke@435 | 834 | case CMDID_ILLEGAL: |
duke@435 | 835 | break; |
duke@435 | 836 | } |
duke@435 | 837 | } |
duke@435 | 838 | } |
duke@435 | 839 | } |
duke@435 | 840 | } |
duke@435 | 841 | } |
duke@435 | 842 | #endif |
duke@435 | 843 | |
dcubed@3202 | 844 | #endif // !PRODUCT |