lib/libc_r/uthread/uthread_mutex_protocol.c

   1 /*
   2  * Copyright (c) 1998 Daniel Eischen <eischen@vigrid.com>.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by Daniel Eischen.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY DANIEL EISCHEN AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $FreeBSD: src/lib/libc_r/uthread/uthread_mutex_protocol.c,v 1.3.2.1 2002/10/22 14:44:03 fjoe Exp $
  33  */
  34 #include <string.h>
  35 #include <stdlib.h>
  36 #include <errno.h>
  37 #include <pthread.h>
  38 #include "pthread_private.h"
  39
  40 int
  41 _pthread_mutexattr_getprotocol(pthread_mutexattr_t * __restrict mattr,
  42     int * __restrict protocol)
  43 {
  44         int ret = 0;
  45
  46         if ((mattr == NULL) || (*mattr == NULL))
  47                 ret = EINVAL;
  48         else
  49                 *protocol = (*mattr)->m_protocol;
  50
  51         return(ret);
  52 }
  53
  54 int
  55 _pthread_mutexattr_setprotocol(pthread_mutexattr_t *mattr, int protocol)
  56 {
  57         int ret = 0;
  58
  59         if ((mattr == NULL) || (*mattr == NULL) ||
  60             (protocol < PTHREAD_PRIO_NONE) || (protocol > PTHREAD_PRIO_PROTECT))
  61                 ret = EINVAL;
  62         else {
  63                 (*mattr)->m_protocol = protocol;
  64                 (*mattr)->m_ceiling = PTHREAD_MAX_PRIORITY;
  65         }
  66         return(ret);
  67 }
  68
  69 __strong_reference(_pthread_mutexattr_getprotocol, pthread_mutexattr_getprotocol);
  70 __strong_reference(_pthread_mutexattr_setprotocol, pthread_mutexattr_setprotocol);