jdk8-mips64-public/hotspot: src/os/windows/vm/decoder_windows.cpp@379b22e03c32 (annotated)

src/os/windows/vm/decoder_windows.cpp@379b22e03c32 (annotated)

src/os/windows/vm/decoder_windows.cpp

Fri, 03 Feb 2012 12:08:55 -0800

author: jcoomes
date: Fri, 03 Feb 2012 12:08:55 -0800
changeset 3502: 379b22e03c32
parent 3430: d7e3846464d0
child 3961: 3b01d0321dfa
permissions: -rw-r--r--

Merge

 /*
  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "prims/jvm.h"
 #include "decoder_windows.hpp"
 WindowsDecoder::WindowsDecoder() {
   _dbghelp_handle = NULL;
   _can_decode_in_vm = false;
   _pfnSymGetSymFromAddr64 = NULL;
   _pfnUndecorateSymbolName = NULL;
   _decoder_status = no_error;
   initialize();
 }
 void WindowsDecoder::initialize() {
   if (!has_error() && _dbghelp_handle == NULL) {
     HMODULE handle = ::LoadLibrary("dbghelp.dll");
     if (!handle) {
       _decoder_status = helper_not_found;
       return;
     }
     _dbghelp_handle = handle;
     pfn_SymSetOptions _pfnSymSetOptions = (pfn_SymSetOptions)::GetProcAddress(handle, "SymSetOptions");
     pfn_SymInitialize _pfnSymInitialize = (pfn_SymInitialize)::GetProcAddress(handle, "SymInitialize");
     _pfnSymGetSymFromAddr64 = (pfn_SymGetSymFromAddr64)::GetProcAddress(handle, "SymGetSymFromAddr64");
     _pfnUndecorateSymbolName = (pfn_UndecorateSymbolName)GetProcAddress(handle, "UnDecorateSymbolName");
     if (_pfnSymSetOptions == NULL || _pfnSymInitialize == NULL || _pfnSymGetSymFromAddr64 == NULL) {
       _pfnSymGetSymFromAddr64 = NULL;
       _pfnUndecorateSymbolName = NULL;
       ::FreeLibrary(handle);
       _dbghelp_handle = NULL;
       _decoder_status = helper_func_error;
       return;
     }
     _pfnSymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS);
     if (!_pfnSymInitialize(GetCurrentProcess(), NULL, TRUE)) {
       _pfnSymGetSymFromAddr64 = NULL;
       _pfnUndecorateSymbolName = NULL;
       ::FreeLibrary(handle);
       _dbghelp_handle = NULL;
       _decoder_status = helper_init_error;
       return;
     }
      // find out if jvm.dll contains private symbols, by decoding
      // current function and comparing the result
      address addr = (address)Decoder::decode;
      char buf[MAX_PATH];
      if (decode(addr, buf, sizeof(buf), NULL)) {
        _can_decode_in_vm = !strcmp(buf, "Decoder::decode");
      }
   }
 }
 void WindowsDecoder::uninitialize() {
   _pfnSymGetSymFromAddr64 = NULL;
   _pfnUndecorateSymbolName = NULL;
   if (_dbghelp_handle != NULL) {
     ::FreeLibrary(_dbghelp_handle);
   }
   _dbghelp_handle = NULL;
 }
 bool WindowsDecoder::can_decode_C_frame_in_vm() const {
   return  (!has_error() && _can_decode_in_vm);
 }
 bool WindowsDecoder::decode(address addr, char *buf, int buflen, int* offset, const char* modulepath)  {
   if (_pfnSymGetSymFromAddr64 != NULL) {
     PIMAGEHLP_SYMBOL64 pSymbol;
     char symbolInfo[MAX_PATH + sizeof(IMAGEHLP_SYMBOL64)];
     pSymbol = (PIMAGEHLP_SYMBOL64)symbolInfo;
     pSymbol->MaxNameLength = MAX_PATH;
     pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
     DWORD64 displacement;
     if (_pfnSymGetSymFromAddr64(::GetCurrentProcess(), (DWORD64)addr, &displacement, pSymbol)) {
       if (buf != NULL) {
         if (demangle(pSymbol->Name, buf, buflen)) {
           jio_snprintf(buf, buflen, "%s", pSymbol->Name);
         }
       }
       if(offset != NULL) *offset = (int)displacement;
       return true;
     }
   }
   if (buf != NULL && buflen > 0) buf[0] = '\0';
   if (offset != NULL) *offset = -1;
   return false;
 }
 bool WindowsDecoder::demangle(const char* symbol, char *buf, int buflen) {
   return _pfnUndecorateSymbolName != NULL &&
          _pfnUndecorateSymbolName(symbol, buf, buflen, UNDNAME_COMPLETE);
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/os/windows/vm/decoder_windows.cpp@379b22e03c32 (annotated)

src/os/windows/vm/decoder_windows.cpp