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/**
* @file
*
* @ingroup POSIXAPI
*
* @brief Canceling Execution of a Thread
*/
/*
* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* Copyright (c) 2016 embedded brains GmbH.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <pthread.h>
#include <errno.h>
#include <rtems/score/isr.h>
#include <rtems/score/threadimpl.h>
/*
* 18.2.1 Canceling Execution of a Thread, P1003.1c/Draft 10, p. 181
*/
int pthread_cancel( pthread_t thread )
{
Thread_Control *the_thread;
ISR_lock_Context lock_context;
Thread_Control *executing;
Per_CPU_Control *cpu_self;
the_thread = _Thread_Get( thread, &lock_context );
if ( the_thread == NULL ) {
return ESRCH;
}
cpu_self = _Per_CPU_Get();
executing = _Per_CPU_Get_executing( cpu_self );
if (
the_thread == executing &&
!_Per_CPU_Is_ISR_in_progress( cpu_self )
) {
_ISR_lock_ISR_enable( &lock_context );
_Thread_Exit( PTHREAD_CANCELED, THREAD_LIFE_TERMINATING );
} else {
_Thread_Dispatch_disable_with_CPU( cpu_self, &lock_context );
_ISR_lock_ISR_enable( &lock_context );
_Thread_Cancel( the_thread, executing, PTHREAD_CANCELED );
_Thread_Dispatch_enable( cpu_self );
}
return 0;
}
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