int
_pthread_setprio(pthread_t pthread, int prio)
{
struct pthread *curthread = _get_curthread();
struct sched_param param;
int ret;
param.sched_priority = prio;
if (pthread == curthread)
THR_LOCK(curthread);
else if ((ret = _thr_find_thread(curthread, pthread, /*include dead*/0)))
return (ret);
if (pthread->attr.sched_policy == SCHED_OTHER ||
pthread->attr.prio == prio) {
pthread->attr.prio = prio;
ret = 0;
} else {
ret = _thr_setscheduler(pthread->tid,
pthread->attr.sched_policy, ¶m);
if (ret == -1)
ret = errno;
else
pthread->attr.prio = prio;
}
THR_THREAD_UNLOCK(curthread, pthread);
return (ret);
}
/*
* Set a thread's scheduling parameters, this should be done
* in kernel, doing it in userland is no-op.
*/
int
_pthread_setschedparam(pthread_t pthread, int policy,
const struct sched_param *param)
{
struct pthread *curthread = _get_curthread();
int ret;
if (pthread == curthread)
THR_LOCK(curthread);
else if ((ret = _thr_find_thread(curthread, pthread,
/*include dead*/0)) != 0)
return (ret);
if (pthread->attr.sched_policy == policy &&
(policy == SCHED_OTHER ||
pthread->attr.prio == param->sched_priority)) {
pthread->attr.prio = param->sched_priority;
THR_THREAD_UNLOCK(curthread, pthread);
return (0);
}
ret = _thr_setscheduler(pthread->tid, policy, param);
if (ret == -1)
ret = errno;
else {
pthread->attr.sched_policy = policy;
pthread->attr.prio = param->sched_priority;
}
THR_THREAD_UNLOCK(curthread, pthread);
return (ret);
}
