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-rw-r--r--cancel_setcancelstate.c125
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diff --git a/cancel_setcancelstate.c b/cancel_setcancelstate.c
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-/*
- * cancel_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) 1999,2002 Pthreads-win32 contributors
- *
- * Contact Email: rpj@ise.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"
-
-
-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();
-
- if (self == NULL
- || (state != PTHREAD_CANCEL_ENABLE
- && state != PTHREAD_CANCEL_DISABLE))
- {
- return EINVAL;
- }
-
- /*
- * Lock for async-cancel safety.
- */
- (void) pthread_mutex_lock(&self->cancelLock);
-
- if (oldstate != NULL)
- {
- *oldstate = self->cancelState;
- }
-
- self->cancelState = state;
-
- /*
- * Check if there is a pending asynchronous cancel
- */
- if (state == PTHREAD_CANCEL_ENABLE
- && self->cancelType == PTHREAD_CANCEL_ASYNCHRONOUS
- && WaitForSingleObject(self->cancelEvent, 0) == WAIT_OBJECT_0)
- {
- self->state = PThreadStateCanceling;
- self->cancelState = PTHREAD_CANCEL_DISABLE;
- ResetEvent(self->cancelEvent);
- (void) pthread_mutex_unlock(&self->cancelLock);
- ptw32_throw(PTW32_EPS_CANCEL);
-
- /* Never reached */
- }
-
- (void) pthread_mutex_unlock(&self->cancelLock);
-
- return (result);
-
-} /* pthread_setcancelstate */
-