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/*
* ptw32_throw.c
*
* Description:
* This translation unit implements routines which are private to
* the implementation and may be used throughout it.
*
* --------------------------------------------------------------------------
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright(C) 1998 John E. Bossom
* Copyright(C) 1999,2005 Pthreads-win32 contributors
*
* Contact Email: rpj@callisto.canberra.edu.au
*
* The current list of contributors is contained
* in the file CONTRIBUTORS included with the source
* code distribution. The list can also be seen at the
* following World Wide Web location:
* http://sources.redhat.com/pthreads-win32/contributors.html
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library in the file COPYING.LIB;
* if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include "pthread.h"
#include "implement.h"
/*
* ptw32_throw
*
* All canceled and explicitly exited POSIX threads go through
* here. This routine knows how to exit both POSIX initiated threads and
* 'implicit' POSIX threads for each of the possible language modes (C,
* C++, and SEH).
*/
void
ptw32_throw (DWORD exception)
{
/*
* Don't use pthread_self() to avoid creating an implicit POSIX thread handle
* unnecessarily.
*/
ptw32_thread_t * sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey);
#ifdef __CLEANUP_SEH
DWORD exceptionInformation[3];
#endif
if (exception != PTW32_EPS_CANCEL && exception != PTW32_EPS_EXIT)
{
/* Should never enter here */
exit (1);
}
if (NULL == sp || sp->implicit)
{
/*
* We're inside a non-POSIX initialised Win32 thread
* so there is no point to jump or throw back to. Just do an
* explicit thread exit here after cleaning up POSIX
* residue (i.e. cleanup handlers, POSIX thread handle etc).
*/
unsigned exitCode = 0;
switch (exception)
{
case PTW32_EPS_CANCEL:
exitCode = (unsigned) PTHREAD_CANCELED;
break;
case PTW32_EPS_EXIT:
exitCode = (unsigned) sp->exitStatus;;
break;
}
#if defined(PTW32_STATIC_LIB)
pthread_win32_thread_detach_np ();
#endif
#if ! defined (__MINGW32__) || defined (__MSVCRT__) || defined (__DMC__)
_endthreadex (exitCode);
#else
_endthread ();
#endif
}
#ifdef __CLEANUP_SEH
exceptionInformation[0] = (DWORD) (exception);
exceptionInformation[1] = (DWORD) (0);
exceptionInformation[2] = (DWORD) (0);
RaiseException (EXCEPTION_PTW32_SERVICES, 0, 3, exceptionInformation);
#else /* __CLEANUP_SEH */
#ifdef __CLEANUP_C
ptw32_pop_cleanup_all (1);
longjmp (sp->start_mark, exception);
#else /* __CLEANUP_C */
#ifdef __CLEANUP_CXX
switch (exception)
{
case PTW32_EPS_CANCEL:
throw ptw32_exception_cancel ();
break;
case PTW32_EPS_EXIT:
throw ptw32_exception_exit ();
break;
}
#else
#error ERROR [__FILE__, line __LINE__]: Cleanup type undefined.
#endif /* __CLEANUP_CXX */
#endif /* __CLEANUP_C */
#endif /* __CLEANUP_SEH */
/* Never reached */
}
void
ptw32_pop_cleanup_all (int execute)
{
while (NULL != ptw32_pop_cleanup (execute))
{
}
}
DWORD
ptw32_get_exception_services_code (void)
{
#ifdef __CLEANUP_SEH
return EXCEPTION_PTW32_SERVICES;
#else
return (DWORD) NULL;
#endif
}
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