120 lines
3.4 KiB
C++
120 lines
3.4 KiB
C++
|
/***
|
||
|
|
*unhandld.cxx - Wrapper to call terminate() when an exception goes unhandled.
|
||
|
|
*
|
||
|
|
* Copyright (c) 1993-2001, Microsoft Corporation. All rights reserved.
|
||
|
|
*
|
||
|
|
*Purpose:
|
||
|
|
* Wrapper to call terminate() when an exception goes unhandled.
|
||
|
|
*
|
||
|
|
*Description:
|
||
|
|
* This module makes use of the Win32 API SetUnhandledExceptionFilter.
|
||
|
|
* This assumes the call to main() is wrapped with
|
||
|
|
* __try { ... }
|
||
|
|
* __except(UnhandledExceptionFilter(_exception_info())) { ... }
|
||
|
|
*
|
||
|
|
*Revision History:
|
||
|
|
* 10-04-93 BS Module created
|
||
|
|
* 10-17-94 BWT Disable code for PPC.
|
||
|
|
* 02-09-95 JWM Mac merge.
|
||
|
|
* 02-16-95 JWM Added __CxxRestoreUnhandledExceptionFilter().
|
||
|
|
* 11-19-96 GJF Install handler during C initializers, remove it
|
||
|
|
* during C termination. Also, reformatted the source a
|
||
|
|
* bit for readability.
|
||
|
|
* 04-28-99 PML Wrap __declspec(allocate()) in _CRTALLOC macro.
|
||
|
|
* 05-17-99 PML Remove all Macintosh support.
|
||
|
|
* 03-27-01 PML .CRT$XI routines must now return 0 or _RT_* fatal
|
||
|
|
* error code (vs7#231220)
|
||
|
|
*
|
||
|
|
****/
|
||
|
|
|
||
|
|
#include <windows.h>
|
||
|
|
#include <ehdata.h>
|
||
|
|
#include <eh.h>
|
||
|
|
#include <ehhooks.h>
|
||
|
|
#include <ehassert.h>
|
||
|
|
#include <internal.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
#pragma hdrstop
|
||
|
|
|
||
|
|
#include <sect_attribs.h>
|
||
|
|
|
||
|
|
int __cdecl __CxxSetUnhandledExceptionFilter(void);
|
||
|
|
void __cdecl __CxxRestoreUnhandledExceptionFilter(void);
|
||
|
|
|
||
|
|
#pragma data_seg(".CRT$XIY")
|
||
|
|
_CRTALLOC(".CRT$XIY") static _PIFV pinit = &__CxxSetUnhandledExceptionFilter;
|
||
|
|
|
||
|
|
#pragma data_seg(".CRT$XTB")
|
||
|
|
_CRTALLOC(".CRT$XTB") static _PVFV pterm = &__CxxRestoreUnhandledExceptionFilter;
|
||
|
|
|
||
|
|
#pragma data_seg()
|
||
|
|
|
||
|
|
static LPTOP_LEVEL_EXCEPTION_FILTER pOldExceptFilter;
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// __CxxUnhandledExceptionFilter - if the exception is ours, call terminate();
|
||
|
|
//
|
||
|
|
// Returns:
|
||
|
|
// If the exception was MSVC C++ EH, does not return.
|
||
|
|
// If the previous filter was NULL, returns EXCEPTION_CONTINUE_SEARCH.
|
||
|
|
// Otherwise returns value returned by previous filter.
|
||
|
|
//
|
||
|
|
LONG WINAPI __CxxUnhandledExceptionFilter(
|
||
|
|
LPEXCEPTION_POINTERS pPtrs
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if (PER_IS_MSVC_EH((EHExceptionRecord*)(pPtrs->ExceptionRecord))) {
|
||
|
|
terminate(); // Does not return
|
||
|
|
return EXCEPTION_EXECUTE_HANDLER;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
|
||
|
|
#pragma warning(disable:4191)
|
||
|
|
|
||
|
|
if ( pOldExceptFilter != NULL &&
|
||
|
|
_ValidateExecute((FARPROC)pOldExceptFilter) )
|
||
|
|
|
||
|
|
#pragma warning(default:4191)
|
||
|
|
|
||
|
|
{
|
||
|
|
return pOldExceptFilter(pPtrs);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return EXCEPTION_CONTINUE_SEARCH;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// __CxxSetUnhandledExceptionFilter - sets unhandled exception filter to be
|
||
|
|
// __CxxUnhandledExceptionFilter.
|
||
|
|
//
|
||
|
|
// Returns:
|
||
|
|
// Returns 0 to indicate no error.
|
||
|
|
//
|
||
|
|
|
||
|
|
int __cdecl __CxxSetUnhandledExceptionFilter(void)
|
||
|
|
{
|
||
|
|
pOldExceptFilter = SetUnhandledExceptionFilter(&__CxxUnhandledExceptionFilter);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// __CxxRestoreUnhandledExceptionFilter - on exit, restores OldExceptFilter
|
||
|
|
//
|
||
|
|
// Returns:
|
||
|
|
// Nothing.
|
||
|
|
//
|
||
|
|
|
||
|
|
void __cdecl __CxxRestoreUnhandledExceptionFilter(void)
|
||
|
|
{
|
||
|
|
SetUnhandledExceptionFilter(pOldExceptFilter);
|
||
|
|
}
|