1 /*- 2 * Copyright (c) 1998 Alex Nash 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <errno.h> 30 #include <stdlib.h> 31 32 #include <pthread.h> 33 #include "thr_private.h" 34 35 __weak_reference(_pthread_rwlockattr_destroy, pthread_rwlockattr_destroy); 36 __weak_reference(_pthread_rwlockattr_getpshared, pthread_rwlockattr_getpshared); 37 __weak_reference(_pthread_rwlockattr_init, pthread_rwlockattr_init); 38 __weak_reference(_pthread_rwlockattr_setpshared, pthread_rwlockattr_setpshared); 39 40 int 41 _pthread_rwlockattr_destroy(pthread_rwlockattr_t *rwlockattr) 42 { 43 pthread_rwlockattr_t prwlockattr; 44 45 if (rwlockattr == NULL) 46 return(EINVAL); 47 48 prwlockattr = *rwlockattr; 49 50 if (prwlockattr == NULL) 51 return(EINVAL); 52 53 free(prwlockattr); 54 55 return(0); 56 } 57 58 int 59 _pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *rwlockattr, 60 int *pshared) 61 { 62 *pshared = (*rwlockattr)->pshared; 63 64 return(0); 65 } 66 67 int 68 _pthread_rwlockattr_init(pthread_rwlockattr_t *rwlockattr) 69 { 70 pthread_rwlockattr_t prwlockattr; 71 72 if (rwlockattr == NULL) 73 return(EINVAL); 74 75 prwlockattr = (pthread_rwlockattr_t) 76 malloc(sizeof(struct pthread_rwlockattr)); 77 78 if (prwlockattr == NULL) 79 return(ENOMEM); 80 81 prwlockattr->pshared = PTHREAD_PROCESS_PRIVATE; 82 *rwlockattr = prwlockattr; 83 84 return(0); 85 } 86 87 int 88 _pthread_rwlockattr_setpshared(pthread_rwlockattr_t *rwlockattr, int pshared) 89 { 90 /* Only PTHREAD_PROCESS_PRIVATE is supported. */ 91 if (pshared != PTHREAD_PROCESS_PRIVATE) 92 return(EINVAL); 93 94 (*rwlockattr)->pshared = pshared; 95 96 return(0); 97 } 98 99