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Commit 4e6580bf authored by Andrew A. de Laix's avatar Andrew A. de Laix
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DOS 2 UNIX line endings.

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/** /**
* @file llwindebug.cpp * @file llwindebug.cpp
* @brief Windows debugging functions * @brief Windows debugging functions
* *
* $LicenseInfo:firstyear=2004&license=viewergpl$ * $LicenseInfo:firstyear=2004&license=viewergpl$
* *
* Copyright (c) 2004-2009, Linden Research, Inc. * Copyright (c) 2004-2009, Linden Research, Inc.
* *
* Second Life Viewer Source Code * Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab * The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0 * to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement * ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of * ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or * the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
* *
* There are special exceptions to the terms and conditions of the GPL as * There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception * it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or * in the file doc/FLOSS-exception.txt in this software distribution, or
* online at * online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception * http://secondlifegrid.net/programs/open_source/licensing/flossexception
* *
* By copying, modifying or distributing this software, you acknowledge * By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above, * that you have read and understood your obligations described above,
* and agree to abide by those obligations. * and agree to abide by those obligations.
* *
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE. * COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$ * $/LicenseInfo$
*/ */
#include "llviewerprecompiledheaders.h" #include "llviewerprecompiledheaders.h"
#include "llwindebug.h" #include "llwindebug.h"
#include "lldir.h" #include "lldir.h"
// based on dbghelp.h // based on dbghelp.h
typedef BOOL (WINAPI *MINIDUMPWRITEDUMP)(HANDLE hProcess, DWORD dwPid, HANDLE hFile, MINIDUMP_TYPE DumpType, typedef BOOL (WINAPI *MINIDUMPWRITEDUMP)(HANDLE hProcess, DWORD dwPid, HANDLE hFile, MINIDUMP_TYPE DumpType,
CONST PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam, CONST PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,
CONST PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam, CONST PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,
CONST PMINIDUMP_CALLBACK_INFORMATION CallbackParam CONST PMINIDUMP_CALLBACK_INFORMATION CallbackParam
); );
MINIDUMPWRITEDUMP f_mdwp = NULL; MINIDUMPWRITEDUMP f_mdwp = NULL;
class LLMemoryReserve { class LLMemoryReserve {
public: public:
LLMemoryReserve(); LLMemoryReserve();
~LLMemoryReserve(); ~LLMemoryReserve();
void reserve(); void reserve();
void release(); void release();
protected: protected:
unsigned char *mReserve; unsigned char *mReserve;
static const size_t MEMORY_RESERVATION_SIZE; static const size_t MEMORY_RESERVATION_SIZE;
}; };
LLMemoryReserve::LLMemoryReserve() : LLMemoryReserve::LLMemoryReserve() :
mReserve(NULL) mReserve(NULL)
{ {
}; };
LLMemoryReserve::~LLMemoryReserve() LLMemoryReserve::~LLMemoryReserve()
{ {
release(); release();
} }
// I dunno - this just seemed like a pretty good value. // I dunno - this just seemed like a pretty good value.
const size_t LLMemoryReserve::MEMORY_RESERVATION_SIZE = 5 * 1024 * 1024; const size_t LLMemoryReserve::MEMORY_RESERVATION_SIZE = 5 * 1024 * 1024;
void LLMemoryReserve::reserve() void LLMemoryReserve::reserve()
{ {
if(NULL == mReserve) if(NULL == mReserve)
mReserve = new unsigned char[MEMORY_RESERVATION_SIZE]; mReserve = new unsigned char[MEMORY_RESERVATION_SIZE];
}; };
void LLMemoryReserve::release() void LLMemoryReserve::release()
{ {
delete [] mReserve; delete [] mReserve;
mReserve = NULL; mReserve = NULL;
}; };
static LLMemoryReserve gEmergencyMemoryReserve; static LLMemoryReserve gEmergencyMemoryReserve;
LONG NTAPI vectoredHandler(PEXCEPTION_POINTERS exception_infop) LONG NTAPI vectoredHandler(PEXCEPTION_POINTERS exception_infop)
{ {
LLWinDebug::instance().generateMinidump(exception_infop); LLWinDebug::instance().generateMinidump(exception_infop);
return EXCEPTION_CONTINUE_SEARCH; return EXCEPTION_CONTINUE_SEARCH;
} }
// static // static
void LLWinDebug::init() void LLWinDebug::init()
{ {
static bool s_first_run = true; static bool s_first_run = true;
// Load the dbghelp dll now, instead of waiting for the crash. // Load the dbghelp dll now, instead of waiting for the crash.
// Less potential for stack mangling // Less potential for stack mangling
if (s_first_run) if (s_first_run)
{ {
// First, try loading from the directory that the app resides in. // First, try loading from the directory that the app resides in.
std::string local_dll_name = gDirUtilp->findFile("dbghelp.dll", gDirUtilp->getWorkingDir(), gDirUtilp->getExecutableDir()); std::string local_dll_name = gDirUtilp->findFile("dbghelp.dll", gDirUtilp->getWorkingDir(), gDirUtilp->getExecutableDir());
HMODULE hDll = NULL; HMODULE hDll = NULL;
hDll = LoadLibraryA(local_dll_name.c_str()); hDll = LoadLibraryA(local_dll_name.c_str());
if (!hDll) if (!hDll)
{ {
hDll = LoadLibrary(L"dbghelp.dll"); hDll = LoadLibrary(L"dbghelp.dll");
} }
if (!hDll) if (!hDll)
{ {
LL_WARNS("AppInit") << "Couldn't find dbghelp.dll!" << LL_ENDL; LL_WARNS("AppInit") << "Couldn't find dbghelp.dll!" << LL_ENDL;
} }
else else
{ {
f_mdwp = (MINIDUMPWRITEDUMP) GetProcAddress(hDll, "MiniDumpWriteDump"); f_mdwp = (MINIDUMPWRITEDUMP) GetProcAddress(hDll, "MiniDumpWriteDump");
if (!f_mdwp) if (!f_mdwp)
{ {
FreeLibrary(hDll); FreeLibrary(hDll);
hDll = NULL; hDll = NULL;
} }
} }
gEmergencyMemoryReserve.reserve(); gEmergencyMemoryReserve.reserve();
s_first_run = false; s_first_run = false;
// Add this exeption hanlder to save windows style minidump. // Add this exeption hanlder to save windows style minidump.
AddVectoredExceptionHandler(0, &vectoredHandler); AddVectoredExceptionHandler(0, &vectoredHandler);
} }
} }
void LLWinDebug::writeDumpToFile(MINIDUMP_TYPE type, MINIDUMP_EXCEPTION_INFORMATION *ExInfop, const std::string& filename) void LLWinDebug::writeDumpToFile(MINIDUMP_TYPE type, MINIDUMP_EXCEPTION_INFORMATION *ExInfop, const std::string& filename)
{ {
if(f_mdwp == NULL || gDirUtilp == NULL) if(f_mdwp == NULL || gDirUtilp == NULL)
{ {
return; return;
} }
else else
{ {
std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, filename); std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, filename);
HANDLE hFile = CreateFileA(dump_path.c_str(), HANDLE hFile = CreateFileA(dump_path.c_str(),
GENERIC_WRITE, GENERIC_WRITE,
FILE_SHARE_WRITE, FILE_SHARE_WRITE,
NULL, NULL,
CREATE_ALWAYS, CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL, FILE_ATTRIBUTE_NORMAL,
NULL); NULL);
if (hFile != INVALID_HANDLE_VALUE) if (hFile != INVALID_HANDLE_VALUE)
{ {
// Write the dump, ignoring the return value // Write the dump, ignoring the return value
f_mdwp(GetCurrentProcess(), f_mdwp(GetCurrentProcess(),
GetCurrentProcessId(), GetCurrentProcessId(),
hFile, hFile,
type, type,
ExInfop, ExInfop,
NULL, NULL,
NULL); NULL);
CloseHandle(hFile); CloseHandle(hFile);
} }
} }
} }
// static // static
void LLWinDebug::generateMinidump(struct _EXCEPTION_POINTERS *exception_infop) void LLWinDebug::generateMinidump(struct _EXCEPTION_POINTERS *exception_infop)
{ {
std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, std::string dump_path = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,
"SecondLifeException"); "SecondLifeException");
if (exception_infop) if (exception_infop)
{ {
// Since there is exception info... Release the hounds. // Since there is exception info... Release the hounds.
gEmergencyMemoryReserve.release(); gEmergencyMemoryReserve.release();
_MINIDUMP_EXCEPTION_INFORMATION ExInfo; _MINIDUMP_EXCEPTION_INFORMATION ExInfo;
ExInfo.ThreadId = ::GetCurrentThreadId(); ExInfo.ThreadId = ::GetCurrentThreadId();
ExInfo.ExceptionPointers = exception_infop; ExInfo.ExceptionPointers = exception_infop;
ExInfo.ClientPointers = NULL; ExInfo.ClientPointers = NULL;
writeDumpToFile((MINIDUMP_TYPE)(MiniDumpWithDataSegs | MiniDumpWithIndirectlyReferencedMemory), &ExInfo, "SecondLife.dmp"); writeDumpToFile((MINIDUMP_TYPE)(MiniDumpWithDataSegs | MiniDumpWithIndirectlyReferencedMemory), &ExInfo, "SecondLife.dmp");
} }
} }
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