Wed, 27 Apr 2016 01:25:04 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2013, 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 | #include "precompiled.hpp" |
aoqi@0 | 26 | #include "prims/jvm.h" |
aoqi@0 | 27 | #include "runtime/arguments.hpp" |
aoqi@0 | 28 | #include "decoder_windows.hpp" |
aoqi@0 | 29 | |
aoqi@0 | 30 | WindowsDecoder::WindowsDecoder() { |
aoqi@0 | 31 | _dbghelp_handle = NULL; |
aoqi@0 | 32 | _can_decode_in_vm = false; |
aoqi@0 | 33 | _pfnSymGetSymFromAddr64 = NULL; |
aoqi@0 | 34 | _pfnUndecorateSymbolName = NULL; |
aoqi@0 | 35 | #ifdef AMD64 |
aoqi@0 | 36 | _pfnStackWalk64 = NULL; |
aoqi@0 | 37 | _pfnSymFunctionTableAccess64 = NULL; |
aoqi@0 | 38 | _pfnSymGetModuleBase64 = NULL; |
aoqi@0 | 39 | #endif |
aoqi@0 | 40 | _decoder_status = no_error; |
aoqi@0 | 41 | initialize(); |
aoqi@0 | 42 | } |
aoqi@0 | 43 | |
aoqi@0 | 44 | void WindowsDecoder::initialize() { |
aoqi@0 | 45 | if (!has_error() && _dbghelp_handle == NULL) { |
aoqi@0 | 46 | HMODULE handle = ::LoadLibrary("dbghelp.dll"); |
aoqi@0 | 47 | if (!handle) { |
aoqi@0 | 48 | _decoder_status = helper_not_found; |
aoqi@0 | 49 | return; |
aoqi@0 | 50 | } |
aoqi@0 | 51 | |
aoqi@0 | 52 | _dbghelp_handle = handle; |
aoqi@0 | 53 | |
aoqi@0 | 54 | pfn_SymSetOptions _pfnSymSetOptions = (pfn_SymSetOptions)::GetProcAddress(handle, "SymSetOptions"); |
aoqi@0 | 55 | pfn_SymInitialize _pfnSymInitialize = (pfn_SymInitialize)::GetProcAddress(handle, "SymInitialize"); |
aoqi@0 | 56 | _pfnSymGetSymFromAddr64 = (pfn_SymGetSymFromAddr64)::GetProcAddress(handle, "SymGetSymFromAddr64"); |
aoqi@0 | 57 | _pfnUndecorateSymbolName = (pfn_UndecorateSymbolName)::GetProcAddress(handle, "UnDecorateSymbolName"); |
aoqi@0 | 58 | |
aoqi@0 | 59 | if (_pfnSymSetOptions == NULL || _pfnSymInitialize == NULL || _pfnSymGetSymFromAddr64 == NULL) { |
aoqi@0 | 60 | uninitialize(); |
aoqi@0 | 61 | _decoder_status = helper_func_error; |
aoqi@0 | 62 | return; |
aoqi@0 | 63 | } |
aoqi@0 | 64 | |
aoqi@0 | 65 | #ifdef AMD64 |
aoqi@0 | 66 | _pfnStackWalk64 = (pfn_StackWalk64)::GetProcAddress(handle, "StackWalk64"); |
aoqi@0 | 67 | _pfnSymFunctionTableAccess64 = (pfn_SymFunctionTableAccess64)::GetProcAddress(handle, "SymFunctionTableAccess64"); |
aoqi@0 | 68 | _pfnSymGetModuleBase64 = (pfn_SymGetModuleBase64)::GetProcAddress(handle, "SymGetModuleBase64"); |
aoqi@0 | 69 | if (_pfnStackWalk64 == NULL || _pfnSymFunctionTableAccess64 == NULL || _pfnSymGetModuleBase64 == NULL) { |
aoqi@0 | 70 | // We can't call StackWalk64 to walk the stack, but we are still |
aoqi@0 | 71 | // able to decode the symbols. Let's limp on. |
aoqi@0 | 72 | _pfnStackWalk64 = NULL; |
aoqi@0 | 73 | _pfnSymFunctionTableAccess64 = NULL; |
aoqi@0 | 74 | _pfnSymGetModuleBase64 = NULL; |
aoqi@0 | 75 | } |
aoqi@0 | 76 | #endif |
aoqi@0 | 77 | |
aoqi@0 | 78 | HANDLE hProcess = ::GetCurrentProcess(); |
aoqi@0 | 79 | _pfnSymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS | SYMOPT_EXACT_SYMBOLS); |
aoqi@0 | 80 | if (!_pfnSymInitialize(hProcess, NULL, TRUE)) { |
aoqi@0 | 81 | _pfnSymGetSymFromAddr64 = NULL; |
aoqi@0 | 82 | _pfnUndecorateSymbolName = NULL; |
aoqi@0 | 83 | ::FreeLibrary(handle); |
aoqi@0 | 84 | _dbghelp_handle = NULL; |
aoqi@0 | 85 | _decoder_status = helper_init_error; |
aoqi@0 | 86 | return; |
aoqi@0 | 87 | } |
aoqi@0 | 88 | |
aoqi@0 | 89 | // set pdb search paths |
aoqi@0 | 90 | pfn_SymSetSearchPath _pfn_SymSetSearchPath = |
aoqi@0 | 91 | (pfn_SymSetSearchPath)::GetProcAddress(handle, "SymSetSearchPath"); |
aoqi@0 | 92 | pfn_SymGetSearchPath _pfn_SymGetSearchPath = |
aoqi@0 | 93 | (pfn_SymGetSearchPath)::GetProcAddress(handle, "SymGetSearchPath"); |
aoqi@0 | 94 | if (_pfn_SymSetSearchPath != NULL && _pfn_SymGetSearchPath != NULL) { |
aoqi@0 | 95 | char paths[MAX_PATH]; |
aoqi@0 | 96 | int len = sizeof(paths); |
aoqi@0 | 97 | if (!_pfn_SymGetSearchPath(hProcess, paths, len)) { |
aoqi@0 | 98 | paths[0] = '\0'; |
aoqi@0 | 99 | } else { |
aoqi@0 | 100 | // available spaces in path buffer |
aoqi@0 | 101 | len -= (int)strlen(paths); |
aoqi@0 | 102 | } |
aoqi@0 | 103 | |
aoqi@0 | 104 | char tmp_path[MAX_PATH]; |
aoqi@0 | 105 | DWORD dwSize; |
aoqi@0 | 106 | HMODULE hJVM = ::GetModuleHandle("jvm.dll"); |
aoqi@0 | 107 | tmp_path[0] = '\0'; |
aoqi@0 | 108 | // append the path where jvm.dll is located |
aoqi@0 | 109 | if (hJVM != NULL && (dwSize = ::GetModuleFileName(hJVM, tmp_path, sizeof(tmp_path))) > 0) { |
aoqi@0 | 110 | while (dwSize > 0 && tmp_path[dwSize] != '\\') { |
aoqi@0 | 111 | dwSize --; |
aoqi@0 | 112 | } |
aoqi@0 | 113 | |
aoqi@0 | 114 | tmp_path[dwSize] = '\0'; |
aoqi@0 | 115 | |
aoqi@0 | 116 | if (dwSize > 0 && len > (int)dwSize + 1) { |
aoqi@0 | 117 | strncat(paths, os::path_separator(), 1); |
aoqi@0 | 118 | strncat(paths, tmp_path, dwSize); |
aoqi@0 | 119 | len -= dwSize + 1; |
aoqi@0 | 120 | } |
aoqi@0 | 121 | } |
aoqi@0 | 122 | |
aoqi@0 | 123 | // append $JRE/bin. Arguments::get_java_home actually returns $JRE |
aoqi@0 | 124 | // path |
aoqi@0 | 125 | char *p = Arguments::get_java_home(); |
aoqi@0 | 126 | assert(p != NULL, "empty java home"); |
aoqi@0 | 127 | size_t java_home_len = strlen(p); |
aoqi@0 | 128 | if (len > (int)java_home_len + 5) { |
aoqi@0 | 129 | strncat(paths, os::path_separator(), 1); |
aoqi@0 | 130 | strncat(paths, p, java_home_len); |
aoqi@0 | 131 | strncat(paths, "\\bin", 4); |
aoqi@0 | 132 | len -= (int)(java_home_len + 5); |
aoqi@0 | 133 | } |
aoqi@0 | 134 | |
aoqi@0 | 135 | // append $JDK/bin path if it exists |
aoqi@0 | 136 | assert(java_home_len < MAX_PATH, "Invalid path length"); |
aoqi@0 | 137 | // assume $JRE is under $JDK, construct $JDK/bin path and |
aoqi@0 | 138 | // see if it exists or not |
aoqi@0 | 139 | if (strncmp(&p[java_home_len - 3], "jre", 3) == 0) { |
aoqi@0 | 140 | strncpy(tmp_path, p, java_home_len - 3); |
aoqi@0 | 141 | tmp_path[java_home_len - 3] = '\0'; |
aoqi@0 | 142 | strncat(tmp_path, "bin", 3); |
aoqi@0 | 143 | |
aoqi@0 | 144 | // if the directory exists |
aoqi@0 | 145 | DWORD dwAttrib = GetFileAttributes(tmp_path); |
aoqi@0 | 146 | if (dwAttrib != INVALID_FILE_ATTRIBUTES && |
aoqi@0 | 147 | (dwAttrib & FILE_ATTRIBUTE_DIRECTORY)) { |
aoqi@0 | 148 | // tmp_path should have the same length as java_home_len, since we only |
aoqi@0 | 149 | // replaced 'jre' with 'bin' |
aoqi@0 | 150 | if (len > (int)java_home_len + 1) { |
aoqi@0 | 151 | strncat(paths, os::path_separator(), 1); |
aoqi@0 | 152 | strncat(paths, tmp_path, java_home_len); |
aoqi@0 | 153 | } |
aoqi@0 | 154 | } |
aoqi@0 | 155 | } |
aoqi@0 | 156 | |
aoqi@0 | 157 | _pfn_SymSetSearchPath(hProcess, paths); |
aoqi@0 | 158 | } |
aoqi@0 | 159 | |
aoqi@0 | 160 | // find out if jvm.dll contains private symbols, by decoding |
aoqi@0 | 161 | // current function and comparing the result |
aoqi@0 | 162 | address addr = (address)Decoder::demangle; |
aoqi@0 | 163 | char buf[MAX_PATH]; |
aoqi@0 | 164 | if (decode(addr, buf, sizeof(buf), NULL)) { |
aoqi@0 | 165 | _can_decode_in_vm = !strcmp(buf, "Decoder::demangle"); |
aoqi@0 | 166 | } |
aoqi@0 | 167 | } |
aoqi@0 | 168 | } |
aoqi@0 | 169 | |
aoqi@0 | 170 | void WindowsDecoder::uninitialize() { |
aoqi@0 | 171 | _pfnSymGetSymFromAddr64 = NULL; |
aoqi@0 | 172 | _pfnUndecorateSymbolName = NULL; |
aoqi@0 | 173 | #ifdef AMD64 |
aoqi@0 | 174 | _pfnStackWalk64 = NULL; |
aoqi@0 | 175 | _pfnSymFunctionTableAccess64 = NULL; |
aoqi@0 | 176 | _pfnSymGetModuleBase64 = NULL; |
aoqi@0 | 177 | #endif |
aoqi@0 | 178 | if (_dbghelp_handle != NULL) { |
aoqi@0 | 179 | ::FreeLibrary(_dbghelp_handle); |
aoqi@0 | 180 | } |
aoqi@0 | 181 | _dbghelp_handle = NULL; |
aoqi@0 | 182 | } |
aoqi@0 | 183 | |
aoqi@0 | 184 | bool WindowsDecoder::can_decode_C_frame_in_vm() const { |
aoqi@0 | 185 | return (!has_error() && _can_decode_in_vm); |
aoqi@0 | 186 | } |
aoqi@0 | 187 | |
aoqi@0 | 188 | |
aoqi@0 | 189 | bool WindowsDecoder::decode(address addr, char *buf, int buflen, int* offset, const char* modulepath) { |
aoqi@0 | 190 | if (_pfnSymGetSymFromAddr64 != NULL) { |
aoqi@0 | 191 | PIMAGEHLP_SYMBOL64 pSymbol; |
aoqi@0 | 192 | char symbolInfo[MAX_PATH + sizeof(IMAGEHLP_SYMBOL64)]; |
aoqi@0 | 193 | pSymbol = (PIMAGEHLP_SYMBOL64)symbolInfo; |
aoqi@0 | 194 | pSymbol->MaxNameLength = MAX_PATH; |
aoqi@0 | 195 | pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64); |
aoqi@0 | 196 | DWORD64 displacement; |
aoqi@0 | 197 | if (_pfnSymGetSymFromAddr64(::GetCurrentProcess(), (DWORD64)addr, &displacement, pSymbol)) { |
aoqi@0 | 198 | if (buf != NULL) { |
aoqi@0 | 199 | if (demangle(pSymbol->Name, buf, buflen)) { |
aoqi@0 | 200 | jio_snprintf(buf, buflen, "%s", pSymbol->Name); |
aoqi@0 | 201 | } |
aoqi@0 | 202 | } |
aoqi@0 | 203 | if(offset != NULL) *offset = (int)displacement; |
aoqi@0 | 204 | return true; |
aoqi@0 | 205 | } |
aoqi@0 | 206 | } |
aoqi@0 | 207 | if (buf != NULL && buflen > 0) buf[0] = '\0'; |
aoqi@0 | 208 | if (offset != NULL) *offset = -1; |
aoqi@0 | 209 | return false; |
aoqi@0 | 210 | } |
aoqi@0 | 211 | |
aoqi@0 | 212 | bool WindowsDecoder::demangle(const char* symbol, char *buf, int buflen) { |
aoqi@0 | 213 | return _pfnUndecorateSymbolName != NULL && |
aoqi@0 | 214 | _pfnUndecorateSymbolName(symbol, buf, buflen, UNDNAME_COMPLETE); |
aoqi@0 | 215 | } |
aoqi@0 | 216 | |
aoqi@0 | 217 | #ifdef AMD64 |
aoqi@0 | 218 | BOOL WindowsDbgHelp::StackWalk64(DWORD MachineType, |
aoqi@0 | 219 | HANDLE hProcess, |
aoqi@0 | 220 | HANDLE hThread, |
aoqi@0 | 221 | LPSTACKFRAME64 StackFrame, |
aoqi@0 | 222 | PVOID ContextRecord, |
aoqi@0 | 223 | PREAD_PROCESS_MEMORY_ROUTINE64 ReadMemoryRoutine, |
aoqi@0 | 224 | PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine, |
aoqi@0 | 225 | PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine, |
aoqi@0 | 226 | PTRANSLATE_ADDRESS_ROUTINE64 TranslateAddress) { |
aoqi@0 | 227 | DecoderLocker locker; |
aoqi@0 | 228 | WindowsDecoder* wd = (WindowsDecoder*)locker.decoder(); |
aoqi@0 | 229 | |
aoqi@0 | 230 | if (!wd->has_error() && wd->_pfnStackWalk64) { |
aoqi@0 | 231 | return wd->_pfnStackWalk64(MachineType, |
aoqi@0 | 232 | hProcess, |
aoqi@0 | 233 | hThread, |
aoqi@0 | 234 | StackFrame, |
aoqi@0 | 235 | ContextRecord, |
aoqi@0 | 236 | ReadMemoryRoutine, |
aoqi@0 | 237 | FunctionTableAccessRoutine, |
aoqi@0 | 238 | GetModuleBaseRoutine, |
aoqi@0 | 239 | TranslateAddress); |
aoqi@0 | 240 | } else { |
aoqi@0 | 241 | return false; |
aoqi@0 | 242 | } |
aoqi@0 | 243 | } |
aoqi@0 | 244 | |
aoqi@0 | 245 | PVOID WindowsDbgHelp::SymFunctionTableAccess64(HANDLE hProcess, DWORD64 AddrBase) { |
aoqi@0 | 246 | DecoderLocker locker; |
aoqi@0 | 247 | WindowsDecoder* wd = (WindowsDecoder*)locker.decoder(); |
aoqi@0 | 248 | |
aoqi@0 | 249 | if (!wd->has_error() && wd->_pfnSymFunctionTableAccess64) { |
aoqi@0 | 250 | return wd->_pfnSymFunctionTableAccess64(hProcess, AddrBase); |
aoqi@0 | 251 | } else { |
aoqi@0 | 252 | return NULL; |
aoqi@0 | 253 | } |
aoqi@0 | 254 | } |
aoqi@0 | 255 | |
aoqi@0 | 256 | pfn_SymFunctionTableAccess64 WindowsDbgHelp::pfnSymFunctionTableAccess64() { |
aoqi@0 | 257 | DecoderLocker locker; |
aoqi@0 | 258 | WindowsDecoder* wd = (WindowsDecoder*)locker.decoder(); |
aoqi@0 | 259 | |
aoqi@0 | 260 | if (!wd->has_error()) { |
aoqi@0 | 261 | return wd->_pfnSymFunctionTableAccess64; |
aoqi@0 | 262 | } else { |
aoqi@0 | 263 | return NULL; |
aoqi@0 | 264 | } |
aoqi@0 | 265 | } |
aoqi@0 | 266 | |
aoqi@0 | 267 | pfn_SymGetModuleBase64 WindowsDbgHelp::pfnSymGetModuleBase64() { |
aoqi@0 | 268 | DecoderLocker locker; |
aoqi@0 | 269 | WindowsDecoder* wd = (WindowsDecoder*)locker.decoder(); |
aoqi@0 | 270 | |
aoqi@0 | 271 | if (!wd->has_error()) { |
aoqi@0 | 272 | return wd->_pfnSymGetModuleBase64; |
aoqi@0 | 273 | } else { |
aoqi@0 | 274 | return NULL; |
aoqi@0 | 275 | } |
aoqi@0 | 276 | } |
aoqi@0 | 277 | |
aoqi@0 | 278 | #endif // AMD64 |