blob: 8afa3855bd6caa4977913deb7c8cd15f773e563e (
plain) (
tree)
|
|
/**
* @file
*
* @brief Scheduler Priority Unblock
* @ingroup ScoreScheduler
*/
/*
* Scheduler Handler
*
* Copyright (C) 2010 Gedare Bloom.
* Copyright (C) 2011 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 <rtems/score/schedulerpriorityimpl.h>
void _Scheduler_priority_Unblock (
Thread_Control *the_thread
)
{
_Scheduler_priority_Ready_queue_enqueue(the_thread);
/* TODO: flash critical section? */
/*
* If the thread that was unblocked is more important than the heir,
* then we have a new heir. This may or may not result in a
* context switch.
*
* Normal case:
* If the current thread is preemptible, then we need to do
* a context switch.
* Pseudo-ISR case:
* Even if the thread isn't preemptible, if the new heir is
* a pseudo-ISR system task, we need to do a context switch.
*/
if ( the_thread->current_priority < _Thread_Heir->current_priority ) {
_Thread_Heir = the_thread;
if ( _Thread_Executing->is_preemptible ||
the_thread->current_priority == 0 )
_Thread_Dispatch_necessary = true;
}
}
|