/*
 * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by John Birrell.
 * 4. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $OpenBSD: uthread_setprio.c,v 1.3 1999/01/17 23:57:16 d Exp $
 */
#include <errno.h>
#ifdef _THREAD_SAFE
#include <pthread.h>
#include <sched.h>
#include "pthread_private.h"

int
pthread_setprio(pthread_t pthread, int prio)
{
	int ret;

	/* Check if the priority is invalid: */
	if (prio < PTHREAD_MIN_PRIORITY || prio > PTHREAD_MAX_PRIORITY)
		/* Return an invalid argument error: */
		ret = EINVAL;

	/* Find the thread in the list of active threads: */
	else if ((ret = _find_thread(pthread)) == 0)
		/* Set the thread priority: */
		pthread->pthread_priority = prio;

	/* Return the error status: */
	return (ret);
}

int
pthread_getschedparam(thread, policy, param)
	pthread_t thread;
	int *policy;
	struct sched_param *param;
{
	int ret = 0;
	
	if ((ret = _find_thread(thread)) == 0) {
		if (policy)
			*policy = SCHED_RR;
		if (param) 
			param->sched_priority = thread->pthread_priority;
	}
	return (ret);
}

int
pthread_setschedparam(thread, policy, param)
	pthread_t thread;
	int policy;
	const struct sched_param *param;
{

	if (policy == SCHED_RR)
		return pthread_setprio(thread, param->sched_priority);
	else
		return (EINVAL);
}
#endif