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/*
* 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.
*
*/
#include <errno.h>
#ifdef _THREAD_SAFE
#include <pthread.h>
#include "pthread_private.h"
int
pthread_setprio(pthread_t pthread, int prio)
{
int rval = 0;
int status;
pthread_t pthread_p;
/* Check if the priority is invalid: */
if (prio < PTHREAD_MIN_PRIORITY || prio > PTHREAD_MAX_PRIORITY) {
/* Return an invalid argument error: */
errno = EINVAL;
rval = -1;
} else {
/* Block signals: */
_thread_kern_sig_block(&status);
/* Point to the first thread in the list: */
pthread_p = _thread_link_list;
/* Enter a loop to search for the thread: */
while (pthread_p != NULL && pthread_p != pthread) {
/* Point to the next thread: */
pthread_p = pthread_p->nxt;
}
/* Check if the thread pointer is NULL: */
if (pthread == NULL || pthread_p == NULL) {
/* Return a 'search' error: */
errno = ESRCH;
rval = -1;
} else {
/* Set the thread priority: */
pthread->pthread_priority = prio;
}
/* Unblock signals: */
_thread_kern_sig_unblock(status);
}
/* Return the error status: */
return (rval);
}
#endif
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