/**
* Print a stack backtrace for the current thread to the specified ostream.
*
* @param os ostream& to receive printed stack backtrace
*/
void printStackTrace( std::ostream& os ) {
CONTEXT context;
memset( &context, 0, sizeof(context) );
context.ContextFlags = CONTEXT_CONTROL;
RtlCaptureContext( &context );
printWindowsStackTrace( context, os );
}
LONG WINAPI exceptionFilter( struct _EXCEPTION_POINTERS *excPointers ) {
char exceptionString[128];
sprintf_s( exceptionString, sizeof( exceptionString ),
( excPointers->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ) ?
"(access violation)" : "0x%08X", excPointers->ExceptionRecord->ExceptionCode );
char addressString[32];
sprintf_s( addressString, sizeof( addressString ), "0x%p",
excPointers->ExceptionRecord->ExceptionAddress );
log() << "*** unhandled exception " << exceptionString
<< " at " << addressString << ", terminating" << std::endl;
if ( excPointers->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ) {
ULONG acType = excPointers->ExceptionRecord->ExceptionInformation[0];
const char* acTypeString;
switch ( acType ) {
case 0:
acTypeString = "read from";
break;
case 1:
acTypeString = "write to";
break;
case 8:
acTypeString = "DEP violation at";
break;
default:
acTypeString = "unknown violation at";
break;
}
sprintf_s( addressString, sizeof( addressString ), " 0x%p",
excPointers->ExceptionRecord->ExceptionInformation[1] );
log() << "*** access violation was a " << acTypeString << addressString << std::endl;
}
log() << "*** stack trace for unhandled exception:" << std::endl;
printWindowsStackTrace( *excPointers->ContextRecord );
doMinidump(excPointers);
// Don't go through normal shutdown procedure. It may make things worse.
log() << "*** immediate exit due to unhandled exception" << std::endl;
::_exit(EXIT_ABRUPT);
// We won't reach here
return EXCEPTION_EXECUTE_HANDLER;
}
