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pcsx2/common/StackWalker.cpp

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/**********************************************************************
*
* StackWalker.cpp
* https://github.com/JochenKalmbach/StackWalker
*
* Old location: http://stackwalker.codeplex.com/
*
*
* History:
* 2005-07-27 v1 - First public release on http://www.codeproject.com/
* http://www.codeproject.com/threads/StackWalker.asp
* 2005-07-28 v2 - Changed the params of the constructor and ShowCallstack
* (to simplify the usage)
* 2005-08-01 v3 - Changed to use 'CONTEXT_FULL' instead of CONTEXT_ALL
* (should also be enough)
* - Changed to compile correctly with the PSDK of VC7.0
* (GetFileVersionInfoSizeA and GetFileVersionInfoA is wrongly defined:
* it uses LPSTR instead of LPCSTR as first parameter)
* - Added declarations to support VC5/6 without using 'dbghelp.h'
* - Added a 'pUserData' member to the ShowCallstack function and the
* PReadProcessMemoryRoutine declaration (to pass some user-defined data,
* which can be used in the readMemoryFunction-callback)
* 2005-08-02 v4 - OnSymInit now also outputs the OS-Version by default
* - Added example for doing an exception-callstack-walking in main.cpp
* (thanks to owillebo: http://www.codeproject.com/script/profile/whos_who.asp?id=536268)
* 2005-08-05 v5 - Removed most Lint (http://www.gimpel.com/) errors... thanks to Okko Willeboordse!
* 2008-08-04 v6 - Fixed Bug: Missing LEAK-end-tag
* http://www.codeproject.com/KB/applications/leakfinder.aspx?msg=2502890#xx2502890xx
* Fixed Bug: Compiled with "WIN32_LEAN_AND_MEAN"
* http://www.codeproject.com/KB/applications/leakfinder.aspx?msg=1824718#xx1824718xx
* Fixed Bug: Compiling with "/Wall"
* http://www.codeproject.com/KB/threads/StackWalker.aspx?msg=2638243#xx2638243xx
* Fixed Bug: Now checking SymUseSymSrv
* http://www.codeproject.com/KB/threads/StackWalker.aspx?msg=1388979#xx1388979xx
* Fixed Bug: Support for recursive function calls
* http://www.codeproject.com/KB/threads/StackWalker.aspx?msg=1434538#xx1434538xx
* Fixed Bug: Missing FreeLibrary call in "GetModuleListTH32"
* http://www.codeproject.com/KB/threads/StackWalker.aspx?msg=1326923#xx1326923xx
* Fixed Bug: SymDia is number 7, not 9!
* 2008-09-11 v7 For some (undocumented) reason, dbhelp.h is needing a packing of 8!
* Thanks to Teajay which reported the bug...
* http://www.codeproject.com/KB/applications/leakfinder.aspx?msg=2718933#xx2718933xx
* 2008-11-27 v8 Debugging Tools for Windows are now stored in a different directory
* Thanks to Luiz Salamon which reported this "bug"...
* http://www.codeproject.com/KB/threads/StackWalker.aspx?msg=2822736#xx2822736xx
* 2009-04-10 v9 License slightly corrected (<ORGANIZATION> replaced)
* 2009-11-01 v10 Moved to http://stackwalker.codeplex.com/
* 2009-11-02 v11 Now try to use IMAGEHLP_MODULE64_V3 if available
* 2010-04-15 v12 Added support for VS2010 RTM
* 2010-05-25 v13 Now using secure MyStrcCpy. Thanks to luke.simon:
* http://www.codeproject.com/KB/applications/leakfinder.aspx?msg=3477467#xx3477467xx
* 2013-01-07 v14 Runtime Check Error VS2010 Debug Builds fixed:
* http://stackwalker.codeplex.com/workitem/10511
*
*
* LICENSE (http://www.opensource.org/licenses/bsd-license.php)
*
* Copyright (c) 2005-2013, Jochen Kalmbach
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 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.
* Neither the name of Jochen Kalmbach nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT OWNER OR 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 "StackWalker.h"
#include <stdio.h>
#include <stdlib.h>
#include <tchar.h>
#include <windows.h>
#include <dbghelp.h>
#pragma comment(lib, "version.lib") // for "VerQueryValue"
static void MyStrCpy(char* szDest, size_t nMaxDestSize, const char* szSrc)
{
strncpy_s(szDest, nMaxDestSize, szSrc, _TRUNCATE);
}
// Normally it should be enough to use 'CONTEXT_FULL' (better would be 'CONTEXT_ALL')
#define USED_CONTEXT_FLAGS CONTEXT_FULL
HMODULE StackWalker::LoadDbgHelpLibrary()
{
return LoadLibrary(_T("dbghelp.dll"));
}
class StackWalkerInternal
{
public:
StackWalkerInternal(StackWalker* parent, HANDLE hProcess)
: m_parent(parent), m_hProcess(hProcess)
{
}
~StackWalkerInternal()
{
if (pSC != nullptr)
pSC(m_hProcess); // SymCleanup
if (m_hDbhHelp != nullptr)
FreeLibrary(m_hDbhHelp);
m_hDbhHelp = nullptr;
m_parent = nullptr;
if (m_szSymPath != nullptr)
free(m_szSymPath);
m_szSymPath = nullptr;
}
StackWalkerInternal(const StackWalkerInternal&) = delete;
BOOL Init(LPCSTR szSymPath)
{
if (m_parent == nullptr)
return FALSE;
m_hDbhHelp = StackWalker::LoadDbgHelpLibrary();
if (m_hDbhHelp == nullptr)
return FALSE;
pSI = (tSI)GetProcAddress(m_hDbhHelp, "SymInitialize");
pSC = (tSC)GetProcAddress(m_hDbhHelp, "SymCleanup");
pSW = (tSW)GetProcAddress(m_hDbhHelp, "StackWalk64");
pSGO = (tSGO)GetProcAddress(m_hDbhHelp, "SymGetOptions");
pSSO = (tSSO)GetProcAddress(m_hDbhHelp, "SymSetOptions");
pSFTA = (tSFTA)GetProcAddress(m_hDbhHelp, "SymFunctionTableAccess64");
pSGLFA = (tSGLFA)GetProcAddress(m_hDbhHelp, "SymGetLineFromAddr64");
pSGMB = (tSGMB)GetProcAddress(m_hDbhHelp, "SymGetModuleBase64");
pSGMI = (tSGMI)GetProcAddress(m_hDbhHelp, "SymGetModuleInfo64");
pSGSFA = (tSGSFA)GetProcAddress(m_hDbhHelp, "SymGetSymFromAddr64");
pUDSN = (tUDSN)GetProcAddress(m_hDbhHelp, "UnDecorateSymbolName");
pSLM = (tSLM)GetProcAddress(m_hDbhHelp, "SymLoadModule64");
pSGSP = (tSGSP)GetProcAddress(m_hDbhHelp, "SymGetSearchPath");
if (pSC == nullptr || pSFTA == nullptr || pSGMB == nullptr || pSGMI == nullptr || pSGO == nullptr ||
pSGSFA == nullptr || pSI == nullptr || pSSO == nullptr || pSW == nullptr || pUDSN == nullptr ||
pSLM == nullptr)
{
FreeLibrary(m_hDbhHelp);
m_hDbhHelp = nullptr;
pSC = nullptr;
return FALSE;
}
// SymInitialize
if (szSymPath != nullptr)
m_szSymPath = _strdup(szSymPath);
if (this->pSI(m_hProcess, m_szSymPath, FALSE) == FALSE)
this->m_parent->OnDbgHelpErr("SymInitialize", GetLastError(), 0);
DWORD symOptions = this->pSGO(); // SymGetOptions
symOptions |= SYMOPT_LOAD_LINES;
symOptions |= SYMOPT_FAIL_CRITICAL_ERRORS;
//symOptions |= SYMOPT_NO_PROMPTS;
// SymSetOptions
symOptions = this->pSSO(symOptions);
char buf[StackWalker::STACKWALK_MAX_NAMELEN] = {0};
if (this->pSGSP != nullptr)
{
if (this->pSGSP(m_hProcess, buf, StackWalker::STACKWALK_MAX_NAMELEN) == FALSE)
this->m_parent->OnDbgHelpErr("SymGetSearchPath", GetLastError(), 0);
}
char szUserName[1024] = {0};
DWORD dwSize = 1024;
GetUserNameA(szUserName, &dwSize);
this->m_parent->OnSymInit(buf, symOptions, szUserName);
return TRUE;
}
StackWalker* m_parent;
HMODULE m_hDbhHelp = nullptr;
HANDLE m_hProcess;
LPSTR m_szSymPath = nullptr;
#pragma pack(push, 8)
struct IMAGEHLP_MODULE64_V3
{
DWORD SizeOfStruct; // set to sizeof(IMAGEHLP_MODULE64)
DWORD64 BaseOfImage; // base load address of module
DWORD ImageSize; // virtual size of the loaded module
DWORD TimeDateStamp; // date/time stamp from pe header
DWORD CheckSum; // checksum from the pe header
DWORD NumSyms; // number of symbols in the symbol table
SYM_TYPE SymType; // type of symbols loaded
CHAR ModuleName[32]; // module name
CHAR ImageName[256]; // image name
CHAR LoadedImageName[256]; // symbol file name
// new elements: 07-Jun-2002
CHAR LoadedPdbName[256]; // pdb file name
DWORD CVSig; // Signature of the CV record in the debug directories
CHAR CVData[MAX_PATH * 3]; // Contents of the CV record
DWORD PdbSig; // Signature of PDB
GUID PdbSig70; // Signature of PDB (VC 7 and up)
DWORD PdbAge; // DBI age of pdb
BOOL PdbUnmatched; // loaded an unmatched pdb
BOOL DbgUnmatched; // loaded an unmatched dbg
BOOL LineNumbers; // we have line number information
BOOL GlobalSymbols; // we have internal symbol information
BOOL TypeInfo; // we have type information
// new elements: 17-Dec-2003
BOOL SourceIndexed; // pdb supports source server
BOOL Publics; // contains public symbols
};
struct IMAGEHLP_MODULE64_V2
{
DWORD SizeOfStruct; // set to sizeof(IMAGEHLP_MODULE64)
DWORD64 BaseOfImage; // base load address of module
DWORD ImageSize; // virtual size of the loaded module
DWORD TimeDateStamp; // date/time stamp from pe header
DWORD CheckSum; // checksum from the pe header
DWORD NumSyms; // number of symbols in the symbol table
SYM_TYPE SymType; // type of symbols loaded
CHAR ModuleName[32]; // module name
CHAR ImageName[256]; // image name
CHAR LoadedImageName[256]; // symbol file name
};
#pragma pack(pop)
// SymCleanup()
typedef BOOL(__stdcall* tSC)(IN HANDLE hProcess);
tSC pSC = nullptr;
// SymFunctionTableAccess64()
typedef PVOID(__stdcall* tSFTA)(HANDLE hProcess, DWORD64 AddrBase);
tSFTA pSFTA = nullptr;
// SymGetLineFromAddr64()
typedef BOOL(__stdcall* tSGLFA)(IN HANDLE hProcess,
IN DWORD64 dwAddr,
OUT PDWORD pdwDisplacement,
OUT PIMAGEHLP_LINE64 Line);
tSGLFA pSGLFA = nullptr;
// SymGetModuleBase64()
typedef DWORD64(__stdcall* tSGMB)(IN HANDLE hProcess, IN DWORD64 dwAddr);
tSGMB pSGMB = nullptr;
// SymGetModuleInfo64()
typedef BOOL(__stdcall* tSGMI)(IN HANDLE hProcess,
IN DWORD64 dwAddr,
OUT IMAGEHLP_MODULE64_V3* ModuleInfo);
tSGMI pSGMI = nullptr;
// SymGetOptions()
typedef DWORD(__stdcall* tSGO)(VOID);
tSGO pSGO = nullptr;
// SymGetSymFromAddr64()
typedef BOOL(__stdcall* tSGSFA)(IN HANDLE hProcess,
IN DWORD64 dwAddr,
OUT PDWORD64 pdwDisplacement,
OUT PIMAGEHLP_SYMBOL64 Symbol);
tSGSFA pSGSFA = nullptr;
// SymInitialize()
typedef BOOL(__stdcall* tSI)(IN HANDLE hProcess, IN PSTR UserSearchPath, IN BOOL fInvadeProcess);
tSI pSI = nullptr;
// SymLoadModule64()
typedef DWORD64(__stdcall* tSLM)(IN HANDLE hProcess,
IN HANDLE hFile,
IN PSTR ImageName,
IN PSTR ModuleName,
IN DWORD64 BaseOfDll,
IN DWORD SizeOfDll);
tSLM pSLM = nullptr;
// SymSetOptions()
typedef DWORD(__stdcall* tSSO)(IN DWORD SymOptions);
tSSO pSSO = nullptr;
// StackWalk64()
typedef BOOL(__stdcall* tSW)(DWORD MachineType,
HANDLE hProcess,
HANDLE hThread,
LPSTACKFRAME64 StackFrame,
PVOID ContextRecord,
PREAD_PROCESS_MEMORY_ROUTINE64 ReadMemoryRoutine,
PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine,
PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine,
PTRANSLATE_ADDRESS_ROUTINE64 TranslateAddress);
tSW pSW = nullptr;
// UnDecorateSymbolName()
typedef DWORD(__stdcall WINAPI* tUDSN)(PCSTR DecoratedName,
PSTR UnDecoratedName,
DWORD UndecoratedLength,
DWORD Flags);
tUDSN pUDSN = nullptr;
typedef BOOL(__stdcall WINAPI* tSGSP)(HANDLE hProcess, PSTR SearchPath, DWORD SearchPathLength);
tSGSP pSGSP = nullptr;
private:
// **************************************** ToolHelp32 ************************
#define MAX_MODULE_NAME32 255
#define TH32CS_SNAPMODULE 0x00000008
#pragma pack(push, 8)
typedef struct tagMODULEENTRY32
{
DWORD dwSize;
DWORD th32ModuleID; // This module
DWORD th32ProcessID; // owning process
DWORD GlblcntUsage; // Global usage count on the module
DWORD ProccntUsage; // Module usage count in th32ProcessID's context
BYTE* modBaseAddr; // Base address of module in th32ProcessID's context
DWORD modBaseSize; // Size in bytes of module starting at modBaseAddr
HMODULE hModule; // The hModule of this module in th32ProcessID's context
char szModule[MAX_MODULE_NAME32 + 1];
char szExePath[MAX_PATH];
} MODULEENTRY32;
typedef MODULEENTRY32* PMODULEENTRY32;
typedef MODULEENTRY32* LPMODULEENTRY32;
#pragma pack(pop)
BOOL GetModuleListTH32(HANDLE hProcess, DWORD pid)
{
// CreateToolhelp32Snapshot()
typedef HANDLE(__stdcall * tCT32S)(DWORD dwFlags, DWORD th32ProcessID);
// Module32First()
typedef BOOL(__stdcall * tM32F)(HANDLE hSnapshot, LPMODULEENTRY32 lpme);
// Module32Next()
typedef BOOL(__stdcall * tM32N)(HANDLE hSnapshot, LPMODULEENTRY32 lpme);
tCT32S pCT32S = nullptr;
tM32F pM32F = nullptr;
tM32N pM32N = nullptr;
HANDLE hSnap;
MODULEENTRY32 me;
me.dwSize = sizeof(me);
HMODULE hKernel32 = LoadLibraryW(L"kernel32.dll");
if (hKernel32 == nullptr)
return FALSE;
pCT32S = (tCT32S)GetProcAddress(hKernel32, "CreateToolhelp32Snapshot");
pM32F = (tM32F)GetProcAddress(hKernel32, "Module32First");
pM32N = (tM32N)GetProcAddress(hKernel32, "Module32Next");
if (pCT32S == nullptr || pM32F == nullptr || pM32N == nullptr)
{
FreeLibrary(hKernel32);
return FALSE;
}
hSnap = pCT32S(TH32CS_SNAPMODULE, pid);
if (hSnap == (HANDLE)-1)
{
FreeLibrary(hKernel32);
return FALSE;
}
BOOL keepGoing = !!pM32F(hSnap, &me);
int cnt = 0;
while (keepGoing)
{
this->LoadModule(hProcess, me.szExePath, me.szModule, (DWORD64)me.modBaseAddr,
me.modBaseSize);
cnt++;
keepGoing = !!pM32N(hSnap, &me);
}
CloseHandle(hSnap);
FreeLibrary(hKernel32);
if (cnt <= 0)
return FALSE;
return TRUE;
} // GetModuleListTH32
// **************************************** PSAPI ************************
typedef struct _MODULEINFO
{
LPVOID lpBaseOfDll;
DWORD SizeOfImage;
LPVOID EntryPoint;
} MODULEINFO, *LPMODULEINFO;
BOOL GetModuleListPSAPI(HANDLE hProcess)
{
// EnumProcessModules()
typedef BOOL(__stdcall * tEPM)(HANDLE hProcess, HMODULE * lphModule, DWORD cb,
LPDWORD lpcbNeeded);
// GetModuleFileNameEx()
typedef DWORD(__stdcall * tGMFNE)(HANDLE hProcess, HMODULE hModule, LPSTR lpFilename,
DWORD nSize);
// GetModuleBaseName()
typedef DWORD(__stdcall * tGMBN)(HANDLE hProcess, HMODULE hModule, LPSTR lpFilename,
DWORD nSize);
// GetModuleInformation()
typedef BOOL(__stdcall * tGMI)(HANDLE hProcess, HMODULE hModule, LPMODULEINFO pmi, DWORD nSize);
HINSTANCE hPsapi;
tEPM pEPM;
tGMFNE pGMFNE;
tGMBN pGMBN;
tGMI pGMI;
DWORD i;
//ModuleEntry e;
DWORD cbNeeded;
MODULEINFO mi;
HMODULE* hMods = nullptr;
char* tt = nullptr;
char* tt2 = nullptr;
const SIZE_T TTBUFLEN = 8096;
int cnt = 0;
hPsapi = LoadLibrary(_T("psapi.dll"));
if (hPsapi == nullptr)
return FALSE;
pEPM = (tEPM)GetProcAddress(hPsapi, "EnumProcessModules");
pGMFNE = (tGMFNE)GetProcAddress(hPsapi, "GetModuleFileNameExA");
pGMBN = (tGMFNE)GetProcAddress(hPsapi, "GetModuleBaseNameA");
pGMI = (tGMI)GetProcAddress(hPsapi, "GetModuleInformation");
if ((pEPM == nullptr) || (pGMFNE == nullptr) || (pGMBN == nullptr) || (pGMI == nullptr))
{
// we couldn't find all functions
FreeLibrary(hPsapi);
return FALSE;
}
hMods = (HMODULE*)malloc(TTBUFLEN);
tt = (char*)malloc(sizeof(char) * TTBUFLEN);
tt2 = (char*)malloc(sizeof(char) * TTBUFLEN);
if ((hMods == nullptr) || (tt == nullptr) || (tt2 == nullptr))
goto cleanup;
if (!pEPM(hProcess, hMods, TTBUFLEN, &cbNeeded))
{
//_ftprintf(fLogFile, _T("%lu: EPM failed, GetLastError = %lu\n"), g_dwShowCount, gle );
goto cleanup;
}
if (cbNeeded > TTBUFLEN)
{
//_ftprintf(fLogFile, _T("%lu: More than %lu module handles. Huh?\n"), g_dwShowCount, lenof( hMods ) );
goto cleanup;
}
for (i = 0; i < cbNeeded / sizeof(hMods[0]); i++)
{
// base address, size
pGMI(hProcess, hMods[i], &mi, sizeof(mi));
// image file name
tt[0] = 0;
pGMFNE(hProcess, hMods[i], tt, TTBUFLEN);
// module name
tt2[0] = 0;
pGMBN(hProcess, hMods[i], tt2, TTBUFLEN);
DWORD dwRes = this->LoadModule(hProcess, tt, tt2, (DWORD64)mi.lpBaseOfDll, mi.SizeOfImage);
if (dwRes != ERROR_SUCCESS)
this->m_parent->OnDbgHelpErr("LoadModule", dwRes, 0);
cnt++;
}
cleanup:
if (hPsapi != nullptr)
FreeLibrary(hPsapi);
if (tt2 != nullptr)
free(tt2);
if (tt != nullptr)
free(tt);
if (hMods != nullptr)
free(hMods);
return cnt != 0;
} // GetModuleListPSAPI
DWORD LoadModule(HANDLE hProcess, LPCSTR img, LPCSTR mod, DWORD64 baseAddr, DWORD size)
{
CHAR* szImg = _strdup(img);
CHAR* szMod = _strdup(mod);
DWORD result = ERROR_SUCCESS;
if ((szImg == nullptr) || (szMod == nullptr))
result = ERROR_NOT_ENOUGH_MEMORY;
else
{
if (pSLM(hProcess, 0, szImg, szMod, baseAddr, size) == 0)
result = GetLastError();
}
ULONGLONG fileVersion = 0;
if ((m_parent != nullptr) && (szImg != nullptr))
{
// try to retrieve the file-version:
if ((this->m_parent->m_options & StackWalker::RetrieveFileVersion) != 0)
{
VS_FIXEDFILEINFO* fInfo = nullptr;
DWORD dwHandle;
DWORD dwSize = GetFileVersionInfoSizeA(szImg, &dwHandle);
if (dwSize > 0)
{
LPVOID vData = malloc(dwSize);
if (vData != nullptr)
{
if (GetFileVersionInfoA(szImg, dwHandle, dwSize, vData) != 0)
{
UINT len;
TCHAR szSubBlock[] = _T("\\");
if (VerQueryValue(vData, szSubBlock, (LPVOID*)&fInfo, &len) == 0)
fInfo = nullptr;
else
{
fileVersion =
((ULONGLONG)fInfo->dwFileVersionLS) + ((ULONGLONG)fInfo->dwFileVersionMS << 32);
}
}
free(vData);
}
}
}
// Retrieve some additional-infos about the module
IMAGEHLP_MODULE64_V3 Module;
const char* szSymType = "-unknown-";
if (this->GetModuleInfo(hProcess, baseAddr, &Module) != FALSE)
{
switch (Module.SymType)
{
case SymNone:
szSymType = "-nosymbols-";
break;
case SymCoff: // 1
szSymType = "COFF";
break;
case SymCv: // 2
szSymType = "CV";
break;
case SymPdb: // 3
szSymType = "PDB";
break;
case SymExport: // 4
szSymType = "-exported-";
break;
case SymDeferred: // 5
szSymType = "-deferred-";
break;
case SymSym: // 6
szSymType = "SYM";
break;
case 7: // SymDia:
szSymType = "DIA";
break;
case 8: //SymVirtual:
szSymType = "Virtual";
break;
}
}
LPCSTR pdbName = Module.LoadedImageName;
if (Module.LoadedPdbName[0] != 0)
pdbName = Module.LoadedPdbName;
this->m_parent->OnLoadModule(img, mod, baseAddr, size, result, szSymType, pdbName,
fileVersion);
}
if (szImg != nullptr)
free(szImg);
if (szMod != nullptr)
free(szMod);
return result;
}
public:
BOOL LoadModules(HANDLE hProcess, DWORD dwProcessId)
{
// first try toolhelp32
if (GetModuleListTH32(hProcess, dwProcessId))
return true;
// then try psapi
return GetModuleListPSAPI(hProcess);
}
BOOL GetModuleInfo(HANDLE hProcess, DWORD64 baseAddr, IMAGEHLP_MODULE64_V3* pModuleInfo)
{
memset(pModuleInfo, 0, sizeof(IMAGEHLP_MODULE64_V3));
if (this->pSGMI == nullptr)
{
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
// First try to use the larger ModuleInfo-Structure
pModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64_V3);
void* pData = malloc(
4096); // reserve enough memory, so the bug in v6.3.5.1 does not lead to memory-overwrites...
if (pData == nullptr)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
memcpy(pData, pModuleInfo, sizeof(IMAGEHLP_MODULE64_V3));
static bool s_useV3Version = true;
if (s_useV3Version)
{
if (this->pSGMI(hProcess, baseAddr, static_cast<IMAGEHLP_MODULE64_V3*>(pData)) != FALSE)
{
// only copy as much memory as is reserved...
memcpy(pModuleInfo, pData, sizeof(IMAGEHLP_MODULE64_V3));
pModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64_V3);
free(pData);
return TRUE;
}
s_useV3Version = false; // to prevent unnecessary calls with the larger struct...
}
// could not retrieve the bigger structure, try with the smaller one (as defined in VC7.1)...
pModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64_V2);
memcpy(pData, pModuleInfo, sizeof(IMAGEHLP_MODULE64_V2));
if (this->pSGMI(hProcess, baseAddr, static_cast<IMAGEHLP_MODULE64_V3*>(pData)) != FALSE)
{
// only copy as much memory as is reserved...
memcpy(pModuleInfo, pData, sizeof(IMAGEHLP_MODULE64_V2));
pModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64_V2);
free(pData);
return TRUE;
}
free(pData);
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
};
// #############################################################
StackWalker::StackWalker(DWORD dwProcessId, HANDLE hProcess)
{
this->m_options = OptionsAll;
this->m_modulesLoaded = FALSE;
this->m_hProcess = hProcess;
this->m_sw = new StackWalkerInternal(this, this->m_hProcess);
this->m_dwProcessId = dwProcessId;
this->m_szSymPath = nullptr;
this->m_MaxRecursionCount = 1000;
}
StackWalker::StackWalker(int options, LPCSTR szSymPath, DWORD dwProcessId, HANDLE hProcess)
{
this->m_options = options;
this->m_modulesLoaded = FALSE;
this->m_hProcess = hProcess;
this->m_sw = new StackWalkerInternal(this, this->m_hProcess);
this->m_dwProcessId = dwProcessId;
if (szSymPath != nullptr)
{
this->m_szSymPath = _strdup(szSymPath);
this->m_options |= SymBuildPath;
}
else
this->m_szSymPath = nullptr;
this->m_MaxRecursionCount = 1000;
}
StackWalker::~StackWalker()
{
if (m_szSymPath != nullptr)
free(m_szSymPath);
m_szSymPath = nullptr;
if (this->m_sw != nullptr)
delete this->m_sw;
this->m_sw = nullptr;
}
BOOL StackWalker::LoadModules()
{
if (this->m_sw == nullptr)
{
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
if (m_modulesLoaded != FALSE)
return TRUE;
// Build the sym-path:
char* szSymPath = nullptr;
if ((this->m_options & SymBuildPath) != 0)
{
const size_t nSymPathLen = 4096;
szSymPath = (char*)malloc(nSymPathLen);
if (szSymPath == nullptr)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
szSymPath[0] = 0;
// Now first add the (optional) provided sympath:
if (this->m_szSymPath != nullptr)
{
strcat_s(szSymPath, nSymPathLen, this->m_szSymPath);
strcat_s(szSymPath, nSymPathLen, ";");
}
strcat_s(szSymPath, nSymPathLen, ".;");
const size_t nTempLen = 1024;
char szTemp[nTempLen];
// Now add the current directory:
if (GetCurrentDirectoryA(nTempLen, szTemp) > 0)
{
szTemp[nTempLen - 1] = 0;
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
}
// Now add the path for the main-module:
if (GetModuleFileNameA(nullptr, szTemp, nTempLen) > 0)
{
szTemp[nTempLen - 1] = 0;
for (char* p = (szTemp + strlen(szTemp) - 1); p >= szTemp; --p)
{
// locate the rightmost path separator
if ((*p == '\\') || (*p == '/') || (*p == ':'))
{
*p = 0;
break;
}
} // for (search for path separator...)
if (strlen(szTemp) > 0)
{
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
}
}
if (GetEnvironmentVariableA("_NT_SYMBOL_PATH", szTemp, nTempLen) > 0)
{
szTemp[nTempLen - 1] = 0;
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
}
if (GetEnvironmentVariableA("_NT_ALTERNATE_SYMBOL_PATH", szTemp, nTempLen) > 0)
{
szTemp[nTempLen - 1] = 0;
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
}
if (GetEnvironmentVariableA("SYSTEMROOT", szTemp, nTempLen) > 0)
{
szTemp[nTempLen - 1] = 0;
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
// also add the "system32"-directory:
strcat_s(szTemp, nTempLen, "\\system32");
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
}
if ((this->m_options & SymUseSymSrv) != 0)
{
if (GetEnvironmentVariableA("SYSTEMDRIVE", szTemp, nTempLen) > 0)
{
szTemp[nTempLen - 1] = 0;
strcat_s(szSymPath, nSymPathLen, "SRV*");
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, "\\websymbols");
strcat_s(szSymPath, nSymPathLen, "*https://msdl.microsoft.com/download/symbols;");
}
else
strcat_s(szSymPath, nSymPathLen,
"SRV*c:\\websymbols*https://msdl.microsoft.com/download/symbols;");
}
} // if SymBuildPath
// First Init the whole stuff...
BOOL bRet = this->m_sw->Init(szSymPath);
if (szSymPath != nullptr)
free(szSymPath);
szSymPath = nullptr;
if (bRet == FALSE)
{
this->OnDbgHelpErr("Error while initializing dbghelp.dll", 0, 0);
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
bRet = this->m_sw->LoadModules(this->m_hProcess, this->m_dwProcessId);
if (bRet != FALSE)
m_modulesLoaded = TRUE;
return bRet;
}
// The following is used to pass the "userData"-Pointer to the user-provided readMemoryFunction
// This has to be done due to a problem with the "hProcess"-parameter in x64...
// Because this class is in no case multi-threading-enabled (because of the limitations
// of dbghelp.dll) it is "safe" to use a static-variable
static StackWalker::PReadProcessMemoryRoutine s_readMemoryFunction = nullptr;
static LPVOID s_readMemoryFunction_UserData = nullptr;
BOOL StackWalker::ShowCallstack(HANDLE hThread,
const CONTEXT* context,
PReadProcessMemoryRoutine readMemoryFunction,
LPVOID pUserData)
{
CONTEXT c;
CallstackEntry csEntry;
IMAGEHLP_SYMBOL64* pSym = nullptr;
StackWalkerInternal::IMAGEHLP_MODULE64_V3 Module;
IMAGEHLP_LINE64 Line;
int frameNum;
bool bLastEntryCalled = true;
int curRecursionCount = 0;
if (m_modulesLoaded == FALSE)
this->LoadModules(); // ignore the result...
if (this->m_sw->m_hDbhHelp == nullptr)
{
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
s_readMemoryFunction = readMemoryFunction;
s_readMemoryFunction_UserData = pUserData;
if (context == nullptr)
{
// If no context is provided, capture the context
// See: https://stackwalker.codeplex.com/discussions/446958
#if _WIN32_WINNT <= 0x0501
// If we need to support XP, we need to use the "old way", because "GetThreadId" is not available!
if (hThread == GetCurrentThread())
#else
if (GetThreadId(hThread) == GetCurrentThreadId())
#endif
{
GET_CURRENT_CONTEXT_STACKWALKER_CODEPLEX(c, USED_CONTEXT_FLAGS);
}
else
{
SuspendThread(hThread);
memset(&c, 0, sizeof(CONTEXT));
c.ContextFlags = USED_CONTEXT_FLAGS;
// TODO: Detect if you want to get a thread context of a different process, which is running a different processor architecture...
// This does only work if we are x64 and the target process is x64 or x86;
// It cannot work, if this process is x64 and the target process is x64... this is not supported...
// See also: http://www.howzatt.demon.co.uk/articles/DebuggingInWin64.html
if (GetThreadContext(hThread, &c) == FALSE)
{
ResumeThread(hThread);
return FALSE;
}
}
}
else
c = *context;
// init STACKFRAME for first call
STACKFRAME64 s; // in/out stackframe
memset(&s, 0, sizeof(s));
DWORD imageType;
#ifdef _M_IX86
// normally, call ImageNtHeader() and use machine info from PE header
imageType = IMAGE_FILE_MACHINE_I386;
s.AddrPC.Offset = c.Eip;
s.AddrPC.Mode = AddrModeFlat;
s.AddrFrame.Offset = c.Ebp;
s.AddrFrame.Mode = AddrModeFlat;
s.AddrStack.Offset = c.Esp;
s.AddrStack.Mode = AddrModeFlat;
#elif _M_X64
imageType = IMAGE_FILE_MACHINE_AMD64;
s.AddrPC.Offset = c.Rip;
s.AddrPC.Mode = AddrModeFlat;
s.AddrFrame.Offset = c.Rsp;
s.AddrFrame.Mode = AddrModeFlat;
s.AddrStack.Offset = c.Rsp;
s.AddrStack.Mode = AddrModeFlat;
#elif _M_IA64
imageType = IMAGE_FILE_MACHINE_IA64;
s.AddrPC.Offset = c.StIIP;
s.AddrPC.Mode = AddrModeFlat;
s.AddrFrame.Offset = c.IntSp;
s.AddrFrame.Mode = AddrModeFlat;
s.AddrBStore.Offset = c.RsBSP;
s.AddrBStore.Mode = AddrModeFlat;
s.AddrStack.Offset = c.IntSp;
s.AddrStack.Mode = AddrModeFlat;
#elif _M_ARM64
imageType = IMAGE_FILE_MACHINE_ARM64;
s.AddrPC.Offset = c.Pc;
s.AddrPC.Mode = AddrModeFlat;
s.AddrFrame.Offset = c.Fp;
s.AddrFrame.Mode = AddrModeFlat;
s.AddrStack.Offset = c.Sp;
s.AddrStack.Mode = AddrModeFlat;
#else
#error "Platform not supported!"
#endif
pSym = (IMAGEHLP_SYMBOL64*)malloc(sizeof(IMAGEHLP_SYMBOL64) + STACKWALK_MAX_NAMELEN);
if (!pSym)
goto cleanup; // not enough memory...
memset(pSym, 0, sizeof(IMAGEHLP_SYMBOL64) + STACKWALK_MAX_NAMELEN);
pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
pSym->MaxNameLength = STACKWALK_MAX_NAMELEN;
memset(&Line, 0, sizeof(Line));
Line.SizeOfStruct = sizeof(Line);
memset(&Module, 0, sizeof(Module));
Module.SizeOfStruct = sizeof(Module);
for (frameNum = 0;; ++frameNum)
{
// get next stack frame (StackWalk64(), SymFunctionTableAccess64(), SymGetModuleBase64())
// if this returns ERROR_INVALID_ADDRESS (487) or ERROR_NOACCESS (998), you can
// assume that either you are done, or that the stack is so hosed that the next
// deeper frame could not be found.
// CONTEXT need not to be supplied if imageTyp is IMAGE_FILE_MACHINE_I386!
if (!this->m_sw->pSW(imageType, this->m_hProcess, hThread, &s, &c, myReadProcMem,
this->m_sw->pSFTA, this->m_sw->pSGMB, nullptr))
{
// INFO: "StackWalk64" does not set "GetLastError"...
this->OnDbgHelpErr("StackWalk64", 0, s.AddrPC.Offset);
break;
}
csEntry.offset = s.AddrPC.Offset;
csEntry.name[0] = 0;
csEntry.undName[0] = 0;
csEntry.undFullName[0] = 0;
csEntry.offsetFromSmybol = 0;
csEntry.offsetFromLine = 0;
csEntry.lineFileName[0] = 0;
csEntry.lineNumber = 0;
csEntry.loadedImageName[0] = 0;
csEntry.moduleName[0] = 0;
if (s.AddrPC.Offset == s.AddrReturn.Offset)
{
if ((this->m_MaxRecursionCount > 0) && (curRecursionCount > m_MaxRecursionCount))
{
this->OnDbgHelpErr("StackWalk64-Endless-Callstack!", 0, s.AddrPC.Offset);
break;
}
curRecursionCount++;
}
else
curRecursionCount = 0;
if (s.AddrPC.Offset != 0)
{
// we seem to have a valid PC
// show procedure info (SymGetSymFromAddr64())
if (this->m_sw->pSGSFA(this->m_hProcess, s.AddrPC.Offset, &(csEntry.offsetFromSmybol),
pSym) != FALSE)
{
MyStrCpy(csEntry.name, STACKWALK_MAX_NAMELEN, pSym->Name);
// UnDecorateSymbolName()
this->m_sw->pUDSN(pSym->Name, csEntry.undName, STACKWALK_MAX_NAMELEN, UNDNAME_NAME_ONLY);
this->m_sw->pUDSN(pSym->Name, csEntry.undFullName, STACKWALK_MAX_NAMELEN, UNDNAME_COMPLETE);
}
else
{
this->OnDbgHelpErr("SymGetSymFromAddr64", GetLastError(), s.AddrPC.Offset);
}
// show line number info, NT5.0-method (SymGetLineFromAddr64())
if (this->m_sw->pSGLFA != nullptr)
{ // yes, we have SymGetLineFromAddr64()
if (this->m_sw->pSGLFA(this->m_hProcess, s.AddrPC.Offset, &(csEntry.offsetFromLine),
&Line) != FALSE)
{
csEntry.lineNumber = Line.LineNumber;
MyStrCpy(csEntry.lineFileName, STACKWALK_MAX_NAMELEN, Line.FileName);
}
else
{
this->OnDbgHelpErr("SymGetLineFromAddr64", GetLastError(), s.AddrPC.Offset);
}
} // yes, we have SymGetLineFromAddr64()
// show module info (SymGetModuleInfo64())
if (this->m_sw->GetModuleInfo(this->m_hProcess, s.AddrPC.Offset, &Module) != FALSE)
{ // got module info OK
switch (Module.SymType)
{
case SymNone:
csEntry.symTypeString = "-nosymbols-";
break;
case SymCoff:
csEntry.symTypeString = "COFF";
break;
case SymCv:
csEntry.symTypeString = "CV";
break;
case SymPdb:
csEntry.symTypeString = "PDB";
break;
case SymExport:
csEntry.symTypeString = "-exported-";
break;
case SymDeferred:
csEntry.symTypeString = "-deferred-";
break;
case SymSym:
csEntry.symTypeString = "SYM";
break;
#if API_VERSION_NUMBER >= 9
case SymDia:
csEntry.symTypeString = "DIA";
break;
#endif
case 8: //SymVirtual:
csEntry.symTypeString = "Virtual";
break;
default:
//_snprintf( ty, sizeof(ty), "symtype=%ld", (long) Module.SymType );
csEntry.symTypeString = nullptr;
break;
}
MyStrCpy(csEntry.moduleName, STACKWALK_MAX_NAMELEN, Module.ModuleName);
csEntry.baseOfImage = Module.BaseOfImage;
MyStrCpy(csEntry.loadedImageName, STACKWALK_MAX_NAMELEN, Module.LoadedImageName);
} // got module info OK
else
{
this->OnDbgHelpErr("SymGetModuleInfo64", GetLastError(), s.AddrPC.Offset);
}
} // we seem to have a valid PC
CallstackEntryType et = nextEntry;
if (frameNum == 0)
et = firstEntry;
bLastEntryCalled = false;
this->OnCallstackEntry(et, csEntry);
if (s.AddrReturn.Offset == 0)
{
bLastEntryCalled = true;
this->OnCallstackEntry(lastEntry, csEntry);
SetLastError(ERROR_SUCCESS);
break;
}
} // for ( frameNum )
cleanup:
if (pSym)
free(pSym);
if (bLastEntryCalled == false)
this->OnCallstackEntry(lastEntry, csEntry);
if (context == nullptr)
ResumeThread(hThread);
return TRUE;
}
BOOL StackWalker::ShowObject(LPVOID pObject)
{
// Load modules if not done yet
if (m_modulesLoaded == FALSE)
this->LoadModules(); // ignore the result...
// Verify that the DebugHelp.dll was actually found
if (this->m_sw->m_hDbhHelp == nullptr)
{
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
// SymGetSymFromAddr64() is required
if (this->m_sw->pSGSFA == nullptr)
return FALSE;
// Show object info (SymGetSymFromAddr64())
DWORD64 dwAddress = DWORD64(pObject);
DWORD64 dwDisplacement = 0;
const SIZE_T symSize = sizeof(IMAGEHLP_SYMBOL64) + STACKWALK_MAX_NAMELEN;
IMAGEHLP_SYMBOL64* pSym = (IMAGEHLP_SYMBOL64*) malloc(symSize);
if (!pSym)
return FALSE;
memset(pSym, 0, symSize);
pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
pSym->MaxNameLength = STACKWALK_MAX_NAMELEN;
if (this->m_sw->pSGSFA(this->m_hProcess, dwAddress, &dwDisplacement, pSym) == FALSE)
{
this->OnDbgHelpErr("SymGetSymFromAddr64", GetLastError(), dwAddress);
free(pSym);
return FALSE;
}
// Object name output
this->OnOutput(pSym->Name);
free(pSym);
return TRUE;
};
BOOL __stdcall StackWalker::myReadProcMem(HANDLE hProcess,
DWORD64 qwBaseAddress,
PVOID lpBuffer,
DWORD nSize,
LPDWORD lpNumberOfBytesRead)
{
if (s_readMemoryFunction == nullptr)
{
SIZE_T st;
BOOL bRet = ReadProcessMemory(hProcess, (LPVOID)qwBaseAddress, lpBuffer, nSize, &st);
*lpNumberOfBytesRead = (DWORD)st;
//printf("ReadMemory: hProcess: %p, baseAddr: %p, buffer: %p, size: %d, read: %d, result: %d\n", hProcess, (LPVOID) qwBaseAddress, lpBuffer, nSize, (DWORD) st, (DWORD) bRet);
return bRet;
}
else
{
return s_readMemoryFunction(hProcess, qwBaseAddress, lpBuffer, nSize, lpNumberOfBytesRead,
s_readMemoryFunction_UserData);
}
}
void StackWalker::OnLoadModule(LPCSTR img,
LPCSTR mod,
DWORD64 baseAddr,
DWORD size,
DWORD result,
LPCSTR symType,
LPCSTR pdbName,
ULONGLONG fileVersion)
{
CHAR buffer[STACKWALK_MAX_NAMELEN];
if (fileVersion == 0)
_snprintf_s(buffer, _TRUNCATE, "%s:%s (%p), size: %d (result: %d), SymType: '%s', PDB: '%s'\n",
img, mod, (LPVOID)baseAddr, size, result, symType, pdbName);
else
{
DWORD v4 = (DWORD)(fileVersion & 0xFFFF);
DWORD v3 = (DWORD)((fileVersion >> 16) & 0xFFFF);
DWORD v2 = (DWORD)((fileVersion >> 32) & 0xFFFF);
DWORD v1 = (DWORD)((fileVersion >> 48) & 0xFFFF);
_snprintf_s(
buffer, _TRUNCATE,
"%s:%s (%p), size: %d (result: %d), SymType: '%s', PDB: '%s', fileVersion: %d.%d.%d.%d\n",
img, mod, (LPVOID)baseAddr, size, result, symType, pdbName, v1, v2, v3, v4);
}
buffer[STACKWALK_MAX_NAMELEN - 1] = 0; // be sure it is nullptr terminated
OnOutput(buffer);
}
void StackWalker::OnCallstackEntry(CallstackEntryType eType, CallstackEntry& entry)
{
CHAR buffer[STACKWALK_MAX_NAMELEN];
if ((eType != lastEntry) && (entry.offset != 0))
{
if (entry.name[0] == 0)
MyStrCpy(entry.name, STACKWALK_MAX_NAMELEN, "(function-name not available)");
if (entry.undName[0] != 0)
MyStrCpy(entry.name, STACKWALK_MAX_NAMELEN, entry.undName);
if (entry.undFullName[0] != 0)
MyStrCpy(entry.name, STACKWALK_MAX_NAMELEN, entry.undFullName);
if (entry.lineFileName[0] == 0)
{
MyStrCpy(entry.lineFileName, STACKWALK_MAX_NAMELEN, "(filename not available)");
if (entry.moduleName[0] == 0)
MyStrCpy(entry.moduleName, STACKWALK_MAX_NAMELEN, "(module-name not available)");
_snprintf_s(buffer, _TRUNCATE, "%p (%s): %s: %s\n", (LPVOID)entry.offset, entry.moduleName,
entry.lineFileName, entry.name);
}
else
_snprintf_s(buffer, _TRUNCATE, "%s (%d): %s\n", entry.lineFileName, entry.lineNumber,
entry.name);
buffer[STACKWALK_MAX_NAMELEN - 1] = 0;
OnOutput(buffer);
}
}
void StackWalker::OnDbgHelpErr(LPCSTR szFuncName, DWORD gle, DWORD64 addr)
{
CHAR buffer[STACKWALK_MAX_NAMELEN];
_snprintf_s(buffer, _TRUNCATE, "ERROR: %s, GetLastError: %d (Address: %p)\n", szFuncName, gle,
(LPVOID)addr);
buffer[STACKWALK_MAX_NAMELEN - 1] = 0;
OnOutput(buffer);
}
void StackWalker::OnSymInit(LPCSTR szSearchPath, DWORD symOptions, LPCSTR szUserName)
{
CHAR buffer[STACKWALK_MAX_NAMELEN];
_snprintf_s(buffer, _TRUNCATE, "SymInit: Symbol-SearchPath: '%s', symOptions: %d, UserName: '%s'\n",
szSearchPath, symOptions, szUserName);
buffer[STACKWALK_MAX_NAMELEN - 1] = 0;
OnOutput(buffer);
OSVERSIONINFOEXA ver;
ZeroMemory(&ver, sizeof(OSVERSIONINFOEXA));
ver.dwOSVersionInfoSize = sizeof(ver);
#if _MSC_VER >= 1900
#pragma warning(push)
#pragma warning(disable : 4996)
#endif
if (GetVersionExA((OSVERSIONINFOA*)&ver) != FALSE)
{
_snprintf_s(buffer, _TRUNCATE, "OS-Version: %d.%d.%d (%s) 0x%x-0x%x\n", ver.dwMajorVersion,
ver.dwMinorVersion, ver.dwBuildNumber, ver.szCSDVersion, ver.wSuiteMask,
ver.wProductType);
buffer[STACKWALK_MAX_NAMELEN - 1] = 0;
OnOutput(buffer);
}
#if _MSC_VER >= 1900
#pragma warning(pop)
#endif
}
void StackWalker::OnOutput(LPCSTR buffer)
{
OutputDebugStringA(buffer);
}
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