thr_mutexattr.c revision 157457
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 157457 2006-04-04 02:57:49Z 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 "namespace.h" 69#include <string.h> 70#include <stdlib.h> 71#include <errno.h> 72#include <pthread.h> 73#include <pthread_np.h> 74#include "un-namespace.h" 75 76#include "thr_private.h" 77 78__weak_reference(_pthread_mutexattr_init, pthread_mutexattr_init); 79__weak_reference(_pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np); 80__weak_reference(_pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np); 81__weak_reference(_pthread_mutexattr_gettype, pthread_mutexattr_gettype); 82__weak_reference(_pthread_mutexattr_settype, pthread_mutexattr_settype); 83__weak_reference(_pthread_mutexattr_destroy, pthread_mutexattr_destroy); 84__weak_reference(_pthread_mutexattr_getpshared, pthread_mutexattr_getpshared); 85__weak_reference(_pthread_mutexattr_setpshared, pthread_mutexattr_setpshared); 86__weak_reference(_pthread_mutexattr_getprotocol, pthread_mutexattr_getprotocol); 87__weak_reference(_pthread_mutexattr_setprotocol, pthread_mutexattr_setprotocol); 88__weak_reference(_pthread_mutexattr_getprioceiling, pthread_mutexattr_getprioceiling); 89__weak_reference(_pthread_mutexattr_setprioceiling, pthread_mutexattr_setprioceiling); 90 91int 92_pthread_mutexattr_init(pthread_mutexattr_t *attr) 93{ 94 int ret; 95 pthread_mutexattr_t pattr; 96 97 if ((pattr = (pthread_mutexattr_t) 98 malloc(sizeof(struct pthread_mutex_attr))) == NULL) { 99 ret = ENOMEM; 100 } else { 101 memcpy(pattr, &_pthread_mutexattr_default, 102 sizeof(struct pthread_mutex_attr)); 103 *attr = pattr; 104 ret = 0; 105 } 106 return (ret); 107} 108 109int 110_pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind) 111{ 112 int ret; 113 if (attr == NULL || *attr == NULL) { 114 errno = EINVAL; 115 ret = -1; 116 } else { 117 (*attr)->m_type = kind; 118 ret = 0; 119 } 120 return(ret); 121} 122 123int 124_pthread_mutexattr_getkind_np(pthread_mutexattr_t attr) 125{ 126 int ret; 127 if (attr == NULL) { 128 errno = EINVAL; 129 ret = -1; 130 } else { 131 ret = attr->m_type; 132 } 133 return(ret); 134} 135 136int 137_pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type) 138{ 139 int ret; 140 if (attr == NULL || *attr == NULL || type >= PTHREAD_MUTEX_TYPE_MAX) { 141 errno = EINVAL; 142 ret = -1; 143 } else { 144 (*attr)->m_type = type; 145 ret = 0; 146 } 147 return(ret); 148} 149 150int 151_pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type) 152{ 153 int ret; 154 155 if (attr == NULL || *attr == NULL || (*attr)->m_type >= 156 PTHREAD_MUTEX_TYPE_MAX) { 157 ret = EINVAL; 158 } else { 159 *type = (*attr)->m_type; 160 ret = 0; 161 } 162 return ret; 163} 164 165int 166_pthread_mutexattr_destroy(pthread_mutexattr_t *attr) 167{ 168 int ret; 169 if (attr == NULL || *attr == NULL) { 170 ret = EINVAL; 171 } else { 172 free(*attr); 173 *attr = NULL; 174 ret = 0; 175 } 176 return(ret); 177} 178 179int 180_pthread_mutexattr_getpshared(const pthread_mutexattr_t *attr, 181 int *pshared) 182{ 183 184 if (attr == NULL || *attr == NULL) 185 return (EINVAL); 186 187 *pshared = PTHREAD_PROCESS_PRIVATE; 188 return (0); 189} 190 191int 192_pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared) 193{ 194 195 if (attr == NULL || *attr == NULL) 196 return (EINVAL); 197 198 /* Only PTHREAD_PROCESS_PRIVATE is supported. */ 199 if (pshared != PTHREAD_PROCESS_PRIVATE) 200 return (EINVAL); 201 202 return (0); 203} 204 205int 206_pthread_mutexattr_getprotocol(pthread_mutexattr_t *mattr, int *protocol) 207{ 208 int ret = 0; 209 210 if ((mattr == NULL) || (*mattr == NULL)) 211 ret = EINVAL; 212 else 213 *protocol = (*mattr)->m_protocol; 214 215 return(ret); 216} 217 218int 219_pthread_mutexattr_setprotocol(pthread_mutexattr_t *mattr, int protocol) 220{ 221 int ret = 0; 222 223 if ((mattr == NULL) || (*mattr == NULL) || 224 (protocol < PTHREAD_PRIO_NONE) || (protocol > PTHREAD_PRIO_PROTECT)) 225 ret = EINVAL; 226 else { 227 (*mattr)->m_protocol = protocol; 228 (*mattr)->m_ceiling = THR_MAX_PRIORITY; 229 } 230 return(ret); 231} 232 233int 234_pthread_mutexattr_getprioceiling(pthread_mutexattr_t *mattr, int *prioceiling) 235{ 236 int ret = 0; 237 238 if ((mattr == NULL) || (*mattr == NULL)) 239 ret = EINVAL; 240 else if ((*mattr)->m_protocol != PTHREAD_PRIO_PROTECT) 241 ret = EINVAL; 242 else 243 *prioceiling = (*mattr)->m_ceiling; 244 245 return(ret); 246} 247 248int 249_pthread_mutexattr_setprioceiling(pthread_mutexattr_t *mattr, int prioceiling) 250{ 251 int ret = 0; 252 253 if ((mattr == NULL) || (*mattr == NULL)) 254 ret = EINVAL; 255 else if ((*mattr)->m_protocol != PTHREAD_PRIO_PROTECT) 256 ret = EINVAL; 257 else 258 (*mattr)->m_ceiling = prioceiling; 259 260 return(ret); 261} 262 263