1 /* 2 * Copyright (c) 1996 Jeffrey Hsu <hsu@freebsd.org>. 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 John Birrell. 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 JOHN BIRRELL 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 * $DragonFly: src/lib/libthread_xu/thread/thr_mutexattr.c,v 1.2 2005/10/24 23:58:01 davidxu Exp $ 33 */ 34 35 /* 36 * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>. 37 * All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by John Birrell. 50 * 4. Neither the name of the author nor the names of any co-contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * $FreeBSD$ 67 */ 68 69 #include <string.h> 70 #include <stdlib.h> 71 #include <errno.h> 72 #include <pthread.h> 73 #include "thr_private.h" 74 75 __weak_reference(_pthread_mutexattr_init, pthread_mutexattr_init); 76 __weak_reference(_pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np); 77 __weak_reference(_pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np); 78 __weak_reference(_pthread_mutexattr_gettype, pthread_mutexattr_gettype); 79 __weak_reference(_pthread_mutexattr_settype, pthread_mutexattr_settype); 80 __weak_reference(_pthread_mutexattr_destroy, pthread_mutexattr_destroy); 81 82 int 83 _pthread_mutexattr_init(pthread_mutexattr_t *attr) 84 { 85 int ret; 86 pthread_mutexattr_t pattr; 87 88 if ((pattr = (pthread_mutexattr_t) 89 malloc(sizeof(struct pthread_mutex_attr))) == NULL) { 90 ret = ENOMEM; 91 } else { 92 memcpy(pattr, &_pthread_mutexattr_default, 93 sizeof(struct pthread_mutex_attr)); 94 *attr = pattr; 95 ret = 0; 96 } 97 return (ret); 98 } 99 100 int 101 _pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind) 102 { 103 int ret; 104 if (attr == NULL || *attr == NULL) { 105 errno = EINVAL; 106 ret = -1; 107 } else { 108 (*attr)->m_type = kind; 109 ret = 0; 110 } 111 return(ret); 112 } 113 114 int 115 _pthread_mutexattr_getkind_np(pthread_mutexattr_t attr) 116 { 117 int ret; 118 if (attr == NULL) { 119 errno = EINVAL; 120 ret = -1; 121 } else { 122 ret = attr->m_type; 123 } 124 return(ret); 125 } 126 127 int 128 _pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type) 129 { 130 int ret; 131 if (attr == NULL || *attr == NULL || type >= MUTEX_TYPE_MAX) { 132 errno = EINVAL; 133 ret = -1; 134 } else { 135 (*attr)->m_type = type; 136 ret = 0; 137 } 138 return(ret); 139 } 140 141 int 142 _pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type) 143 { 144 int ret; 145 146 if (attr == NULL || *attr == NULL || (*attr)->m_type >= 147 MUTEX_TYPE_MAX) { 148 ret = EINVAL; 149 } else { 150 *type = (*attr)->m_type; 151 ret = 0; 152 } 153 return ret; 154 } 155 156 int 157 _pthread_mutexattr_destroy(pthread_mutexattr_t *attr) 158 { 159 int ret; 160 if (attr == NULL || *attr == NULL) { 161 ret = EINVAL; 162 } else { 163 free(*attr); 164 *attr = NULL; 165 ret = 0; 166 } 167 return(ret); 168 } 169 170 int 171 _pthread_mutexattr_getpshared(const pthread_mutexattr_t *attr, 172 int *pshared) 173 { 174 175 if (attr == NULL || *attr == NULL) 176 return (EINVAL); 177 178 *pshared = PTHREAD_PROCESS_PRIVATE; 179 return (0); 180 } 181 182 int 183 _pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared) 184 { 185 186 if (attr == NULL || *attr == NULL) 187 return (EINVAL); 188 189 /* Only PTHREAD_PROCESS_PRIVATE is supported. */ 190 if (pshared != PTHREAD_PROCESS_PRIVATE) 191 return (EINVAL); 192 193 return (0); 194 } 195