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Win32: generate stacktrace on unhandled exception

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This commit is contained in:
Geoffroy Couprie 2009-02-01 14:30:40 +01:00
parent 3230451120
commit f7c9acaebd
1 changed files with 89 additions and 0 deletions
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89
bin/winvlc.c
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@ -35,6 +35,13 @@
#include <stdlib.h>
#include <windows.h>
#if !defined(UNDER_CE) && defined ( NDEBUG )
# define _WIN32_IE 0x500
# include <shlobj.h>
# include <tlhelp32.h>
LONG WINAPI vlc_exception_filter(struct _EXCEPTION_POINTERS *lpExceptionInfo);
#endif
#ifndef UNDER_CE
static char *FromWide (const wchar_t *wide)
{
@ -128,6 +135,10 @@ int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
libvlc_exception_init (&ex);
libvlc_exception_init (&dummy);
#if !defined( UNDER_CE ) && defined ( NDEBUG )
SetUnhandledExceptionFilter(vlc_exception_filter);
#endif
/* Initialize libvlc */
libvlc_instance_t *vlc;
vlc = libvlc_new (argc - 1, (const char **)argv + 1, &ex);
@ -149,3 +160,81 @@ int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
(void)hInstance; (void)hPrevInstance; (void)lpCmdLine; (void)nCmdShow;
return ret;
}
#if !defined( UNDER_CE ) && defined ( NDEBUG )
/*****************************************************************************
* vlc_exception_filter: handles unhandled exceptions, like segfaults
*****************************************************************************/
LONG WINAPI vlc_exception_filter(struct _EXCEPTION_POINTERS *lpExceptionInfo)
{
wchar_t wdir[MAX_PATH];
fprintf( stderr, "unhandled vlc exception\n" );
if( S_OK != SHGetFolderPathW( NULL,
CSIDL_APPDATA | CSIDL_FLAG_CREATE,
NULL, SHGFP_TYPE_CURRENT, wdir ) )
fprintf( stderr, "Can't open the vlc conf PATH\n" );
swprintf( wdir+wcslen( wdir ), L"%s", L"\\vlc\\crashdump" );
FILE * fd = _wfopen ( wdir, L"w, ccs=UTF-8" );
if( !fd )
fprintf( stderr, "\nerror while opening file" );
OSVERSIONINFO osvi;
ZeroMemory( &osvi, sizeof(OSVERSIONINFO) );
osvi.dwOSVersionInfoSize = sizeof( OSVERSIONINFO );
GetVersionEx( &osvi );
fwprintf( fd, L"[Version]\n0S=%d.%d.%d.%d.%s\nVLC=%s", osvi.dwMajorVersion,
osvi.dwMinorVersion,
osvi.dwBuildNumber,
osvi.dwPlatformId,
osvi.szCSDVersion,
VERSION_MESSAGE);
const CONTEXT *const pContext = (const CONTEXT *)lpExceptionInfo->ContextRecord;
const EXCEPTION_RECORD *const pException = (const EXCEPTION_RECORD *)lpExceptionInfo->ExceptionRecord;
/*No nested exceptions for now*/
fwprintf( fd, L"\n\n[Exceptions]\n%08x at %08x",pException->ExceptionCode,
pException->ExceptionAddress );
if( pException->NumberParameters > 0 )
{
unsigned int i;
for( i = 0; i < pException->NumberParameters; i++ )
fprintf( fd, " | %08x", pException->ExceptionInformation[i] );
}
fwprintf( fd, L"\n\n[CONTEXT]\nEDI:%08x\nESI:%08x\n" \
"EBX:%08x\nEDX:%08xn\nECX:%08x\nEAX:%08x\n" \
"EBP:%08x\nEIP:%08x\nESP:%08x\n",
pContext->Edi,pContext->Esi,pContext->Ebx,
pContext->Edx,pContext->Ecx,pContext->Eax,
pContext->Ebp,pContext->Eip,pContext->Esp );
fwprintf( fd, L"\n\n[STACKTRACE]\n#EIP|base|module\n" );
DWORD pEbp = pContext->Ebp;
DWORD caller = *((DWORD*)pEbp + 1) ;
wchar_t module[ 256 ];
do
{
MEMORY_BASIC_INFORMATION mbi ;
VirtualQuery( (DWORD *)caller, &mbi, sizeof( mbi ) ) ;
HINSTANCE hInstance = mbi.AllocationBase;
GetModuleFileName( hInstance, module, 256 ) ;
fwprintf( fd, L"%08x|%08x|%s\n", caller, hInstance, module );
pEbp = *(DWORD*)pEbp ;
caller = *((DWORD*)pEbp + 1) ;
/*The last EBP points to NULL!*/
}while(caller);
fclose( fd );
fflush( stderr );
exit( 1 );
}
#endif