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 "namespace.h" 30 #include <errno.h> 31 #include <stdlib.h> 32 #include <pthread.h> 33 #include "un-namespace.h" 34 35 #include "thr_private.h" 36 37 __weak_reference(_pthread_rwlockattr_destroy, pthread_rwlockattr_destroy); 38 __weak_reference(_pthread_rwlockattr_getpshared, pthread_rwlockattr_getpshared); 39 __weak_reference(_pthread_rwlockattr_getkind_np, pthread_rwlockattr_getkind_np); 40 __weak_reference(_pthread_rwlockattr_init, pthread_rwlockattr_init); 41 __weak_reference(_pthread_rwlockattr_setpshared, pthread_rwlockattr_setpshared); 42 __weak_reference(_pthread_rwlockattr_setkind_np, pthread_rwlockattr_setkind_np); 43 44 int 45 _pthread_rwlockattr_destroy(pthread_rwlockattr_t *rwlockattr) 46 { 47 pthread_rwlockattr_t prwlockattr; 48 49 if (rwlockattr == NULL) 50 return(EINVAL); 51 52 prwlockattr = *rwlockattr; 53 54 if (prwlockattr == NULL) 55 return(EINVAL); 56 57 free(prwlockattr); 58 59 return(0); 60 } 61 62 int 63 _pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *rwlockattr, 64 int *pshared) 65 { 66 *pshared = (*rwlockattr)->pshared; 67 68 return(0); 69 } 70 71 int 72 _pthread_rwlockattr_init(pthread_rwlockattr_t *rwlockattr) 73 { 74 pthread_rwlockattr_t prwlockattr; 75 76 if (rwlockattr == NULL) 77 return(EINVAL); 78 79 prwlockattr = (pthread_rwlockattr_t) 80 malloc(sizeof(struct pthread_rwlockattr)); 81 82 if (prwlockattr == NULL) 83 return(ENOMEM); 84 85 prwlockattr->pshared = PTHREAD_PROCESS_PRIVATE; 86 prwlockattr->kind = PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP; 87 *rwlockattr = prwlockattr; 88 89 return(0); 90 } 91 92 int 93 _pthread_rwlockattr_setpshared(pthread_rwlockattr_t *rwlockattr, int pshared) 94 { 95 /* Only PTHREAD_PROCESS_PRIVATE is supported. */ 96 if (pshared != PTHREAD_PROCESS_PRIVATE) 97 return(EINVAL); 98 99 (*rwlockattr)->pshared = pshared; 100 101 return(0); 102 } 103 104 int 105 _pthread_rwlockattr_setkind_np(pthread_rwlockattr_t *attr, int kind) 106 { 107 if (kind != PTHREAD_RWLOCK_PREFER_READER_NP && 108 kind != PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP && 109 kind != PTHREAD_RWLOCK_PREFER_WRITER_NP) { 110 return (EINVAL); 111 } 112 (*attr)->kind = kind; 113 return (0); 114 } 115 116 int 117 _pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t *attr, int *kind) 118 { 119 *kind = (*attr)->kind; 120 return (0); 121 } 122