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/**
* @file
*
* @brief Gets Scheduling Policy and Parameters of Individual Threads
* @ingroup POSIXAPI
*/
/*
* 13.5.2 Dynamic Thread Scheduling Parameters Access,
* P1003.1c/Draft 10, p. 124
*
* 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.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <pthread.h>
#include <errno.h>
#include <rtems/posix/pthreadimpl.h>
#include <rtems/posix/priorityimpl.h>
#include <rtems/score/schedulerimpl.h>
#include <rtems/score/threadimpl.h>
int pthread_getschedparam(
pthread_t thread,
int *policy,
struct sched_param *param
)
{
Thread_Control *the_thread;
Thread_queue_Context queue_context;
POSIX_API_Control *api;
const Scheduler_Control *scheduler;
Priority_Control priority;
if ( policy == NULL || param == NULL ) {
return EINVAL;
}
_Thread_queue_Context_initialize( &queue_context );
the_thread = _Thread_Get( thread, &queue_context.Lock_context.Lock_context );
if ( the_thread == NULL ) {
return ESRCH;
}
api = the_thread->API_Extensions[ THREAD_API_POSIX ];
_Thread_Wait_acquire_critical( the_thread, &queue_context );
*policy = api->schedpolicy;
*param = api->schedparam;
scheduler = _Thread_Scheduler_get_home( the_thread );
priority = the_thread->Real_priority.priority;
_Thread_Wait_release( the_thread, &queue_context );
param->sched_priority = _POSIX_Priority_From_core( scheduler, priority );
return 0;
}
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