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/**
* @file
*
* @ingroup RTEMSImplClassicTask
*
* @brief This source file contains the implementation of
* rtems_task_resume().
*/
/*
* COPYRIGHT (c) 1989-2014.
* 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.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/tasksimpl.h>
#include <rtems/score/threadimpl.h>
rtems_status_code rtems_task_resume(
rtems_id id
)
{
Thread_Control *the_thread;
ISR_lock_Context lock_context;
Per_CPU_Control *cpu_self;
States_Control previous_state;
the_thread = _Thread_Get( id, &lock_context );
if ( the_thread == NULL ) {
#if defined(RTEMS_MULTIPROCESSING)
return _RTEMS_tasks_MP_Resume( id );
#else
return RTEMS_INVALID_ID;
#endif
}
cpu_self = _Thread_Dispatch_disable_critical( &lock_context );
_ISR_lock_ISR_enable( &lock_context );
previous_state = _Thread_Clear_state( the_thread, STATES_SUSPENDED );
_Thread_Dispatch_enable( cpu_self );
return _States_Is_suspended( previous_state ) ?
RTEMS_SUCCESSFUL : RTEMS_INCORRECT_STATE;
}
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