我花了很多时间在我的进程(win32)中使用所谓的setunhandledexceptionfilter()
来捕获未处理的异常。
但是当WER(Windows错误报告 - DR.watson众所周知)显示时,我没有捕获异常。
在我的APP中没有第三方的情况下无法捕捉所有异常情况吗?
我认为有处理方法,但我不明白。
我不习惯Windows DEV环境。这就是为什么我在谷歌搜索中失去了精神。
以下是我在vc110(Visual Studio 2012)中的测试用例。
chat test[65];
int main() {
// after attaching unhandled exception call-back using setunhandledexceptionfilter()
// die point (ACCESS_VIOLATION c0000005)
for (int k=0; k<1000000; k++)
test[k]=65;
在WER(Windows错误报告)发生后未调用我的回调。它不能像我的意图那样工作。
* 但strcpy(NULL, "TEST")
没关系(成功) *
以下是我的源代码。
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/stat.h>
#include <assert.h>
#include <process.h>
#include <direct.h>
#include <conio.h>
#include <time.h>
#include <Windows.h>
#include <tchar.h>
#include <dbghelp.h>
#include <stdio.h>
#include <crtdbg.h>
#include <WinBase.h>
#pragma comment ( lib, "dbghelp.lib" )
void CreateMiniDump( EXCEPTION_POINTERS* pep );
BOOL CALLBACK MyMiniDumpCallback(
PVOID pParam,
const PMINIDUMP_CALLBACK_INPUT pInput,
PMINIDUMP_CALLBACK_OUTPUT pOutput
);
///////////////////////////////////////////////////////////////////////////////
// Minidump creation function
//
#if 0
LONG WINAPI lpTopLevelExceptionFilter(EXCEPTION_POINTERS* ExceptionInfo);
#endif
void CreateMiniDump( EXCEPTION_POINTERS* pep )
{
time_t t;
struct tm *tinfo;
wchar_t dump_name[128];
HANDLE hFile;
time(&t);
tinfo = localtime(&t);
wcsftime(dump_name, 128, L"MiniDump[%Y%m%d][%H_%M_%S].dmp", tinfo);
// file format MiniDump[YYYYMMDD][HH_MM_SEC]
hFile = CreateFile(dump_name, GENERIC_READ | GENERIC_WRITE,
0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );
if( ( hFile != NULL ) && ( hFile != INVALID_HANDLE_VALUE ) )
{
// Create the minidump
MINIDUMP_EXCEPTION_INFORMATION mdei;
MINIDUMP_CALLBACK_INFORMATION mci;
MINIDUMP_TYPE mdt;
BOOL rv;
mdei.ThreadId = GetCurrentThreadId();
mdei.ExceptionPointers = pep;
mdei.ClientPointers = FALSE;
mci.CallbackRoutine = (MINIDUMP_CALLBACK_ROUTINE)MyMiniDumpCallback;
mci.CallbackParam = 0;
mdt = (MINIDUMP_TYPE)(MiniDumpWithIndirectlyReferencedMemory | MiniDumpScanMemory| MiniDumpWithThreadInfo);
rv = MiniDumpWriteDump( GetCurrentProcess(), GetCurrentProcessId(),
hFile, mdt, (pep != 0) ? &mdei : 0, 0, &mci );
if( !rv )
_tprintf( _T("MiniDumpWriteDump failed. Error: %u \n"), GetLastError() );
else
_tprintf( _T("Minidump created.\n") );
// Close the file
CloseHandle( hFile );
}
else
{
_tprintf( _T("CreateFile failed. Error: %u \n"), GetLastError() );
}
}
///////////////////////////////////////////////////////////////////////////////
// Custom minidump callback
//
BOOL CALLBACK MyMiniDumpCallback(
PVOID pParam,
const PMINIDUMP_CALLBACK_INPUT pInput,
PMINIDUMP_CALLBACK_OUTPUT pOutput
)
{
BOOL bRet = FALSE;
// Check parameters
if( pInput == 0 )
return FALSE;
if( pOutput == 0 )
return FALSE;
// Process the callbacks
switch( pInput->CallbackType )
{
case IncludeModuleCallback:
{
// Include the module into the dump
bRet = TRUE;
}
break;
case IncludeThreadCallback:
{
// Include the thread into the dump
bRet = TRUE;
}
break;
case ModuleCallback:
{
// Does the module have ModuleReferencedByMemory flag set ?
if( !(pOutput->ModuleWriteFlags & ModuleReferencedByMemory) )
{
// No, it does not - exclude it
wprintf( L"Excluding module: %s \n", pInput->Module.FullPath );
pOutput->ModuleWriteFlags &= (~ModuleWriteModule);
}
bRet = TRUE;
}
break;
case ThreadCallback:
{
// Include all thread information into the minidump
bRet = TRUE;
}
break;
case ThreadExCallback:
{
// Include this information
bRet = TRUE;
}
break;
case MemoryCallback:
{
// We do not include any information here -> return FALSE
bRet = FALSE;
}
break;
case CancelCallback:
break;
}
return bRet;
}
LONG WINAPI exception_filter_func(EXCEPTION_POINTERS* pep)
{
if (pep == NULL) {
return EXCEPTION_EXECUTE_HANDLER;
}
if (pep->ExceptionRecord->ExceptionCode == EXCEPTION_STACK_OVERFLOW) {
HANDLE hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)CreateMiniDump, pep, 0, NULL);
WaitForSingleObject(hThread, INFINITE);
CloseHandle(hThread);
} else {
CreateMiniDump(pep);
}
return EXCEPTION_EXECUTE_HANDLER;
}
char test[65];
int main(int argc, char **argv)
{
int k;
SetUnhandledExceptionFilter(exception_filter_func);
// exception occured (ACCESS_VIOLATION)
for (k=0; k<1000000; k++)
test[k]=65;
}