blob: 559daab2a4ab4855b3c64b8fd2d6e0e7f0eb303f [file] [log] [blame]
/*
* Copyright (C) 2018 Sony Interactive Entertainment Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <wtf/win/DbgHelperWin.h>
#include <mutex>
namespace WTF {
namespace DbgHelper {
// We are only calling these DbgHelp.dll functions in debug mode since the library is not threadsafe.
// It's possible for external code to call the library at the same time as WebKit and cause memory corruption.
#if !defined(NDEBUG)
static Lock callMutex;
static void initializeSymbols(HANDLE hProc)
{
static std::once_flag onceFlag;
std::call_once(onceFlag, [&]() {
if (!SymInitialize(hProc, nullptr, TRUE))
LOG_ERROR("Failed to initialze symbol information %d", GetLastError());
});
}
bool SymFromAddress(HANDLE hProc, DWORD64 address, DWORD64* displacement, SYMBOL_INFO* symbolInfo)
{
LockHolder lock(callMutex);
initializeSymbols(hProc);
bool success = ::SymFromAddr(hProc, address, displacement, symbolInfo);
if (success)
symbolInfo->Name[symbolInfo->NameLen] = '\0';
return success;
}
#else
bool SymFromAddress(HANDLE, DWORD64, DWORD64*, SYMBOL_INFO*)
{
return false;
}
#endif // !defined(NDEBUG)
} // namespace DbgHelper
} // namespace WTF