thr_mutexattr.c revision 157194
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 * $FreeBSD: head/lib/libthr/thread/thr_mutexattr.c 157194 2006-03-27 23:50:21Z davidxu $ 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 */ 67 68#include <string.h> 69#include <stdlib.h> 70#include <errno.h> 71#include <pthread.h> 72#include "thr_private.h" 73 74__weak_reference(_pthread_mutexattr_init, pthread_mutexattr_init); 75__weak_reference(_pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np); 76__weak_reference(_pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np); 77__weak_reference(_pthread_mutexattr_gettype, pthread_mutexattr_gettype); 78__weak_reference(_pthread_mutexattr_settype, pthread_mutexattr_settype); 79__weak_reference(_pthread_mutexattr_destroy, pthread_mutexattr_destroy); 80__weak_reference(_pthread_mutexattr_getpshared, pthread_mutexattr_getpshared); 81__weak_reference(_pthread_mutexattr_setpshared, pthread_mutexattr_setpshared); 82__weak_reference(_pthread_mutexattr_getprotocol, pthread_mutexattr_getprotocol); 83__weak_reference(_pthread_mutexattr_setprotocol, pthread_mutexattr_setprotocol); 84__weak_reference(_pthread_mutexattr_getprioceiling, pthread_mutexattr_getprioceiling); 85__weak_reference(_pthread_mutexattr_setprioceiling, pthread_mutexattr_setprioceiling); 86 87int 88_pthread_mutexattr_init(pthread_mutexattr_t *attr) 89{ 90 int ret; 91 pthread_mutexattr_t pattr; 92 93 if ((pattr = (pthread_mutexattr_t) 94 malloc(sizeof(struct pthread_mutex_attr))) == NULL) { 95 ret = ENOMEM; 96 } else { 97 memcpy(pattr, &_pthread_mutexattr_default, 98 sizeof(struct pthread_mutex_attr)); 99 *attr = pattr; 100 ret = 0; 101 } 102 return (ret); 103} 104 105int 106_pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind) 107{ 108 int ret; 109 if (attr == NULL || *attr == NULL) { 110 errno = EINVAL; 111 ret = -1; 112 } else { 113 (*attr)->m_type = kind; 114 ret = 0; 115 } 116 return(ret); 117} 118 119int 120_pthread_mutexattr_getkind_np(pthread_mutexattr_t attr) 121{ 122 int ret; 123 if (attr == NULL) { 124 errno = EINVAL; 125 ret = -1; 126 } else { 127 ret = attr->m_type; 128 } 129 return(ret); 130} 131 132int 133_pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type) 134{ 135 int ret; 136 if (attr == NULL || *attr == NULL || type >= PTHREAD_MUTEX_TYPE_MAX) { 137 errno = EINVAL; 138 ret = -1; 139 } else { 140 (*attr)->m_type = type; 141 ret = 0; 142 } 143 return(ret); 144} 145 146int 147_pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type) 148{ 149 int ret; 150 151 if (attr == NULL || *attr == NULL || (*attr)->m_type >= 152 PTHREAD_MUTEX_TYPE_MAX) { 153 ret = EINVAL; 154 } else { 155 *type = (*attr)->m_type; 156 ret = 0; 157 } 158 return ret; 159} 160 161int 162_pthread_mutexattr_destroy(pthread_mutexattr_t *attr) 163{ 164 int ret; 165 if (attr == NULL || *attr == NULL) { 166 ret = EINVAL; 167 } else { 168 free(*attr); 169 *attr = NULL; 170 ret = 0; 171 } 172 return(ret); 173} 174 175int 176_pthread_mutexattr_getpshared(const pthread_mutexattr_t *attr, 177 int *pshared) 178{ 179 180 if (attr == NULL || *attr == NULL) 181 return (EINVAL); 182 183 *pshared = PTHREAD_PROCESS_PRIVATE; 184 return (0); 185} 186 187int 188_pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared) 189{ 190 191 if (attr == NULL || *attr == NULL) 192 return (EINVAL); 193 194 /* Only PTHREAD_PROCESS_PRIVATE is supported. */ 195 if (pshared != PTHREAD_PROCESS_PRIVATE) 196 return (EINVAL); 197 198 return (0); 199} 200 201int 202_pthread_mutexattr_getprotocol(pthread_mutexattr_t *mattr, int *protocol) 203{ 204 int ret = 0; 205 206 if ((mattr == NULL) || (*mattr == NULL)) 207 ret = EINVAL; 208 else 209 *protocol = (*mattr)->m_protocol; 210 211 return(ret); 212} 213 214int 215_pthread_mutexattr_setprotocol(pthread_mutexattr_t *mattr, int protocol) 216{ 217 int ret = 0; 218 219 if ((mattr == NULL) || (*mattr == NULL) || 220 (protocol < PTHREAD_PRIO_NONE) || (protocol > PTHREAD_PRIO_PROTECT)) 221 ret = EINVAL; 222 else { 223 (*mattr)->m_protocol = protocol; 224 (*mattr)->m_ceiling = THR_MAX_PRIORITY; 225 } 226 return(ret); 227} 228 229int 230_pthread_mutexattr_getprioceiling(pthread_mutexattr_t *mattr, int *prioceiling) 231{ 232 int ret = 0; 233 234 if ((mattr == NULL) || (*mattr == NULL)) 235 ret = EINVAL; 236 else if ((*mattr)->m_protocol != PTHREAD_PRIO_PROTECT) 237 ret = EINVAL; 238 else 239 *prioceiling = (*mattr)->m_ceiling; 240 241 return(ret); 242} 243 244int 245_pthread_mutexattr_setprioceiling(pthread_mutexattr_t *mattr, int prioceiling) 246{ 247 int ret = 0; 248 249 if ((mattr == NULL) || (*mattr == NULL)) 250 ret = EINVAL; 251 else if ((*mattr)->m_protocol != PTHREAD_PRIO_PROTECT) 252 ret = EINVAL; 253 else 254 (*mattr)->m_ceiling = prioceiling; 255 256 return(ret); 257} 258 259