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/**
* @file
*
* @brief Sets the Cancelability Type of Calling Thread to value given in type
* @ingroup POSIXAPI
*/
/*
* COPYRIGHT (c) 1989-2009.
* 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.
*/
#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/posix/cancel.h>
#include <rtems/posix/pthreadimpl.h>
#include <rtems/posix/threadsup.h>
/*
* 18.2.2 Setting Cancelability State, P1003.1c/Draft 10, p. 183
*/
int pthread_setcanceltype(
int type,
int *oldtype
)
{
POSIX_API_Control *thread_support;
Thread_Control *executing;
/*
* 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 ( !oldtype )
return EINVAL;
if ( type != PTHREAD_CANCEL_DEFERRED && type != PTHREAD_CANCEL_ASYNCHRONOUS )
return EINVAL;
_Thread_Disable_dispatch();
executing = _Thread_Executing;
thread_support = executing ->API_Extensions[ THREAD_API_POSIX ];
*oldtype = thread_support->cancelability_type;
thread_support->cancelability_type = type;
_POSIX_Thread_Evaluate_cancellation_and_enable_dispatch( executing );
/*
* _Thread_Enable_dispatch is invoked by above call.
*/
return 0;
}
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