1 /* 2 * Copyright (c) 1996 Jeffrey Hsu <hsu@freebsd.org>. 3 * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by John Birrell. 17 * 4. Neither the name of the author nor the names of any co-contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 35 #include "namespace.h" 36 #include <string.h> 37 #include <stdlib.h> 38 #include <errno.h> 39 #include <pthread.h> 40 #include <pthread_np.h> 41 #include "un-namespace.h" 42 43 #include "thr_private.h" 44 45 /* Default mutex attributes. */ 46 struct pthread_mutex_attr _pthread_mutexattr_default = { 47 .m_type = PTHREAD_MUTEX_DEFAULT, 48 .m_protocol = PTHREAD_PRIO_NONE, 49 .m_ceiling = 0, 50 .m_flags = 0 51 }; 52 53 int 54 _pthread_mutexattr_init(pthread_mutexattr_t *attr) 55 { 56 int ret; 57 pthread_mutexattr_t pattr; 58 59 if ((pattr = (pthread_mutexattr_t) 60 malloc(sizeof(struct pthread_mutex_attr))) == NULL) { 61 ret = ENOMEM; 62 } else { 63 memcpy(pattr, &_pthread_mutexattr_default, 64 sizeof(struct pthread_mutex_attr)); 65 *attr = pattr; 66 ret = 0; 67 } 68 return (ret); 69 } 70 71 int 72 _pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind) 73 { 74 int ret; 75 if (attr == NULL || *attr == NULL) { 76 errno = EINVAL; 77 ret = -1; 78 } else { 79 (*attr)->m_type = kind; 80 ret = 0; 81 } 82 return(ret); 83 } 84 85 int 86 _pthread_mutexattr_getkind_np(pthread_mutexattr_t attr) 87 { 88 int ret; 89 if (attr == NULL) { 90 errno = EINVAL; 91 ret = -1; 92 } else { 93 ret = attr->m_type; 94 } 95 return(ret); 96 } 97 98 int 99 _pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type) 100 { 101 int ret; 102 if (attr == NULL || *attr == NULL || type >= PTHREAD_MUTEX_TYPE_MAX) { 103 errno = EINVAL; 104 ret = -1; 105 } else { 106 (*attr)->m_type = type; 107 ret = 0; 108 } 109 return(ret); 110 } 111 112 int 113 _pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type) 114 { 115 int ret; 116 117 if (attr == NULL || *attr == NULL || (*attr)->m_type >= 118 PTHREAD_MUTEX_TYPE_MAX) { 119 ret = EINVAL; 120 } else { 121 *type = (*attr)->m_type; 122 ret = 0; 123 } 124 return ret; 125 } 126 127 int 128 _pthread_mutexattr_destroy(pthread_mutexattr_t *attr) 129 { 130 int ret; 131 if (attr == NULL || *attr == NULL) { 132 ret = EINVAL; 133 } else { 134 free(*attr); 135 *attr = NULL; 136 ret = 0; 137 } 138 return(ret); 139 } 140 141 int 142 _pthread_mutexattr_getpshared(const pthread_mutexattr_t *attr, 143 int *pshared) 144 { 145 146 if (attr == NULL || *attr == NULL) 147 return (EINVAL); 148 149 *pshared = PTHREAD_PROCESS_PRIVATE; 150 return (0); 151 } 152 153 int 154 _pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared) 155 { 156 157 if (attr == NULL || *attr == NULL) 158 return (EINVAL); 159 160 /* Only PTHREAD_PROCESS_PRIVATE is supported. */ 161 if (pshared != PTHREAD_PROCESS_PRIVATE) 162 return (EINVAL); 163 164 return (0); 165 } 166 167 __strong_reference(_pthread_mutexattr_init, pthread_mutexattr_init); 168 __strong_reference(_pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np); 169 __strong_reference(_pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np); 170 __strong_reference(_pthread_mutexattr_gettype, pthread_mutexattr_gettype); 171 __strong_reference(_pthread_mutexattr_settype, pthread_mutexattr_settype); 172 __strong_reference(_pthread_mutexattr_destroy, pthread_mutexattr_destroy); 173 __strong_reference(_pthread_mutexattr_getpshared, pthread_mutexattr_getpshared); 174 __strong_reference(_pthread_mutexattr_setpshared, pthread_mutexattr_setpshared); 175