mirror of
https://github.com/libretro/pcsx2.git
synced 2024-12-14 05:38:51 +00:00
4457fe40fc
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@2897 96395faa-99c1-11dd-bbfe-3dabce05a288
124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
/*
|
|
* pthread_setcancelstate.c
|
|
*
|
|
* Description:
|
|
* POSIX thread functions related to thread cancellation.
|
|
*
|
|
* --------------------------------------------------------------------------
|
|
*
|
|
* 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 "ptw32pch.h"
|
|
|
|
|
|
int
|
|
pthread_setcancelstate (int state, int *oldstate)
|
|
/*
|
|
* ------------------------------------------------------
|
|
* DOCPUBLIC
|
|
* This function atomically sets the calling thread's
|
|
* cancelability state to 'state' and returns the previous
|
|
* cancelability state at the location referenced by
|
|
* 'oldstate'
|
|
*
|
|
* PARAMETERS
|
|
* state,
|
|
* oldstate
|
|
* PTHREAD_CANCEL_ENABLE
|
|
* cancellation is enabled,
|
|
*
|
|
* PTHREAD_CANCEL_DISABLE
|
|
* cancellation is disabled
|
|
*
|
|
*
|
|
* DESCRIPTION
|
|
* This function atomically sets the calling thread's
|
|
* cancelability state to 'state' and returns the previous
|
|
* cancelability state at the location referenced by
|
|
* 'oldstate'.
|
|
*
|
|
* NOTES:
|
|
* 1) Use to disable cancellation around 'atomic' code that
|
|
* includes cancellation points
|
|
*
|
|
* COMPATIBILITY ADDITIONS
|
|
* If 'oldstate' is NULL then the previous state is not returned
|
|
* but the function still succeeds. (Solaris)
|
|
*
|
|
* RESULTS
|
|
* 0 successfully set cancelability type,
|
|
* EINVAL 'state' is invalid
|
|
*
|
|
* ------------------------------------------------------
|
|
*/
|
|
{
|
|
int result = 0;
|
|
pthread_t self = pthread_self ();
|
|
ptw32_thread_t * sp = (ptw32_thread_t *) self.p;
|
|
|
|
if (sp == NULL
|
|
|| (state != PTHREAD_CANCEL_ENABLE && state != PTHREAD_CANCEL_DISABLE))
|
|
{
|
|
return EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Lock for async-cancel safety.
|
|
*/
|
|
(void) pthread_mutex_lock (&sp->cancelLock);
|
|
|
|
if (oldstate != NULL)
|
|
{
|
|
*oldstate = sp->cancelState;
|
|
}
|
|
|
|
sp->cancelState = state;
|
|
|
|
/*
|
|
* Check if there is a pending asynchronous cancel
|
|
*/
|
|
if (state == PTHREAD_CANCEL_ENABLE
|
|
&& sp->cancelType == PTHREAD_CANCEL_ASYNCHRONOUS
|
|
&& WaitForSingleObject (sp->cancelEvent, 0) == WAIT_OBJECT_0)
|
|
{
|
|
sp->state = PThreadStateCanceling;
|
|
sp->cancelState = PTHREAD_CANCEL_DISABLE;
|
|
ResetEvent (sp->cancelEvent);
|
|
(void) pthread_mutex_unlock (&sp->cancelLock);
|
|
ptw32_throw (PTW32_EPS_CANCEL);
|
|
|
|
/* Never reached */
|
|
}
|
|
|
|
(void) pthread_mutex_unlock (&sp->cancelLock);
|
|
|
|
return (result);
|
|
|
|
} /* pthread_setcancelstate */
|