jdk8-mips64-public/hotspot: src/os/windows/vm/decoder_windows.cpp@a6128a8ed624 (annotated)

src/os/windows/vm/decoder_windows.cpp@a6128a8ed624 (annotated)

src/os/windows/vm/decoder_windows.cpp

Wed, 07 Sep 2011 18:58:33 -0700

author: iveresov
date: Wed, 07 Sep 2011 18:58:33 -0700
changeset 3118: a6128a8ed624
parent 3031: b1cbb0907b36
child 3430: d7e3846464d0
permissions: -rw-r--r--

7086226: UseNUMA fails on old versions of windows
Summary: Return correct answers from os::numa_*() for UMA machines or if NUMA API is not supported
Reviewed-by: johnc

 /*
  * Copyright (c) 1997, 2010, 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 "runtime/os.hpp"
 #include "utilities/decoder.hpp"
 HMODULE                   Decoder::_dbghelp_handle = NULL;
 bool                      Decoder::_can_decode_in_vm = false;
 pfn_SymGetSymFromAddr64   Decoder::_pfnSymGetSymFromAddr64 = NULL;
 pfn_UndecorateSymbolName  Decoder::_pfnUndecorateSymbolName = NULL;
 void Decoder::initialize() {
   if (!_initialized) {
     _initialized = true;
     HINSTANCE handle = os::win32::load_Windows_dll("dbghelp.dll", NULL, 0);
     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::initialize;
      char buf[MAX_PATH];
      if (decode(addr, buf, sizeof(buf), NULL) == no_error) {
        _can_decode_in_vm = !strcmp(buf, "Decoder::initialize");
      }
   }
 }
 void Decoder::uninitialize() {
   assert(_initialized, "Decoder not yet initialized");
   _pfnSymGetSymFromAddr64 = NULL;
   _pfnUndecorateSymbolName = NULL;
   if (_dbghelp_handle != NULL) {
     ::FreeLibrary(_dbghelp_handle);
   }
   _initialized = false;
 }
 bool Decoder::can_decode_C_frame_in_vm() {
   initialize();
   return  _can_decode_in_vm;
 }
 Decoder::decoder_status Decoder::decode(address addr, char *buf, int buflen, int *offset) {
   assert(_initialized, "Decoder not yet initialized");
   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 no_error;
     }
   }
   return helper_not_found;
 }
 bool Decoder::demangle(const char* symbol, char *buf, int buflen) {
   assert(_initialized, "Decoder not yet initialized");
   return _pfnUndecorateSymbolName != NULL &&
          _pfnUndecorateSymbolName(symbol, buf, buflen, UNDNAME_COMPLETE);
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/os/windows/vm/decoder_windows.cpp@a6128a8ed624 (annotated)

src/os/windows/vm/decoder_windows.cpp