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/**
* @file
*
* @brief Translate sched_param into SuperCore Terms
* @ingroup POSIX_PTHREAD Private POSIX Threads
*/
/*
* 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/posix/pthread.h>
#include <rtems/posix/priority.h>
#include <rtems/posix/time.h>
int _POSIX_Thread_Translate_sched_param(
int policy,
struct sched_param *param,
Thread_CPU_budget_algorithms *budget_algorithm,
Thread_CPU_budget_algorithm_callout *budget_callout
)
{
if ( !_POSIX_Priority_Is_valid( param->sched_priority ) )
return EINVAL;
*budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE;
*budget_callout = NULL;
if ( policy == SCHED_OTHER ) {
*budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE;
return 0;
}
if ( policy == SCHED_FIFO ) {
*budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE;
return 0;
}
if ( policy == SCHED_RR ) {
*budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_EXHAUST_TIMESLICE;
return 0;
}
if ( policy == SCHED_SPORADIC ) {
if ( (param->sched_ss_repl_period.tv_sec == 0) &&
(param->sched_ss_repl_period.tv_nsec == 0) )
return EINVAL;
if ( (param->sched_ss_init_budget.tv_sec == 0) &&
(param->sched_ss_init_budget.tv_nsec == 0) )
return EINVAL;
if ( _Timespec_To_ticks( ¶m->sched_ss_repl_period ) <
_Timespec_To_ticks( ¶m->sched_ss_init_budget ) )
return EINVAL;
if ( !_POSIX_Priority_Is_valid( param->sched_ss_low_priority ) )
return EINVAL;
*budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_CALLOUT;
*budget_callout = _POSIX_Threads_Sporadic_budget_callout;
return 0;
}
return EINVAL;
}
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