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/* Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <sched.h>
#include <string.h>
#include "pthreadP.h"
#include <lowlevellock.h>
int
pthread_setschedparam (thread_id, policy, param)
pthread_t thread_id;
int policy;
const struct sched_param *param;
{
struct pthread *thread = (struct pthread *) thread_id;
int result = 0;
/* We have to handle cancellation in the following code since we are
locking another threads desriptor. */
pthread_cleanup_push ((void (*) (void *)) lll_unlock_wake_cb, &thread->lock);
lll_lock (thread->lock);
/* Try to set the scheduler information. */
if (__builtin_expect (__sched_setscheduler (thread->tid, policy,
param) == -1, 0))
result = errno;
else
{
/* We succeeded changing the kernel information. Reflect this
change in the thread descriptor. */
thread->schedpolicy = policy;
memcpy (&thread->schedparam, param, sizeof (struct sched_param));
}
lll_unlock (thread->lock);
pthread_cleanup_pop (0);
return result;
}
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