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/**
* @file
*
* @brief Pthread Get Attribute
* @ingroup POSIXAPI
*/
/*
* COPYRIGHT (c) 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.
*/
#define _GNU_SOURCE
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <pthread.h>
#include <errno.h>
#include <string.h>
#include <rtems/posix/pthreadimpl.h>
#include <rtems/posix/pthreadattrimpl.h>
#include <rtems/posix/priorityimpl.h>
#include <rtems/score/schedulerimpl.h>
#include <rtems/score/threadimpl.h>
int pthread_getattr_np(
pthread_t thread,
pthread_attr_t *attr
)
{
Thread_Control *the_thread;
ISR_lock_Context lock_context;
Thread_CPU_budget_algorithms budget_algorithm;
const Scheduler_Control *scheduler;
bool ok;
if ( attr == NULL ) {
return EINVAL;
}
attr = memset( attr, 0, sizeof( *attr ) );
the_thread = _Thread_Get( thread, &lock_context );
if ( the_thread == NULL ) {
return ESRCH;
}
_Thread_State_acquire_critical( the_thread, &lock_context );
attr->stackaddr = the_thread->Start.Initial_stack.area;
attr->stacksize = the_thread->Start.Initial_stack.size;
if ( the_thread->was_created_with_inherited_scheduler ) {
attr->inheritsched = PTHREAD_INHERIT_SCHED;
} else {
attr->inheritsched = PTHREAD_EXPLICIT_SCHED;
}
scheduler = _Thread_Scheduler_get_home( the_thread );
attr->schedparam.sched_priority = _POSIX_Priority_From_core(
scheduler,
_Thread_Get_priority( the_thread )
);
_POSIX_Threads_Get_sched_param_sporadic(
the_thread,
scheduler,
&attr->schedparam
);
if ( _Thread_Is_joinable( the_thread ) ) {
attr->detachstate = PTHREAD_CREATE_JOINABLE;
} else {
attr->detachstate = PTHREAD_CREATE_DETACHED;
}
attr->affinityset = &attr->affinitysetpreallocated;
attr->affinitysetsize = sizeof( attr->affinitysetpreallocated );
ok = _Scheduler_Get_affinity(
the_thread,
attr->affinitysetsize,
attr->affinityset
);
budget_algorithm = the_thread->budget_algorithm;
_Thread_State_release( the_thread, &lock_context );
attr->is_initialized = true;
attr->contentionscope = PTHREAD_SCOPE_PROCESS;
attr->cputime_clock_allowed = 1;
attr->schedpolicy =
_POSIX_Thread_Translate_to_sched_policy( budget_algorithm );
return ok ? 0 : EINVAL;
}
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