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/*
* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <pthread.h>
#include <errno.h>
#include <rtems/system.h>
#include <rtems/score/chain.h>
#include <rtems/score/isr.h>
#include <rtems/score/thread.h>
#include <rtems/score/wkspace.h>
#include <rtems/posix/cancel.h>
#include <rtems/posix/pthread.h>
#include <rtems/posix/threadsup.h>
/*PAGE
*
* 18.2.2 Setting Cancelability State, P1003.1c/Draft 10, p. 183
*/
int pthread_setcancelstate(
int state,
int *oldstate
)
{
POSIX_API_Control *thread_support;
boolean cancel = FALSE;
/*
* Don't even think about deleting a resource from an ISR.
* Besides this request is supposed to be for _Thread_Executing
* and the ISR context is not a thread.
*/
if ( _ISR_Is_in_progress() )
return EPROTO;
if ( !oldstate )
return EINVAL;
if ( state != PTHREAD_CANCEL_ENABLE && state != PTHREAD_CANCEL_DISABLE )
return EINVAL;
thread_support = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ];
_Thread_Disable_dispatch();
*oldstate = thread_support->cancelability_state;
thread_support->cancelability_state = state;
if ( thread_support->cancelability_state == PTHREAD_CANCEL_ENABLE &&
thread_support->cancelability_type == PTHREAD_CANCEL_ASYNCHRONOUS &&
thread_support->cancelation_requested )
cancel = TRUE;
_Thread_Enable_dispatch();
if ( cancel )
_POSIX_Thread_Exit( _Thread_Executing, PTHREAD_CANCELED );
return 0;
}
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