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. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/10/lib/libthr/thread/thr_mutexattr.c 177451 2008-03-20 11:47:08Z ru $
30 */
31
32 /*
33 * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. Neither the name of the author nor the names of any co-contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 */
61
62 #include "namespace.h"
63 #include <string.h>
64 #include <stdlib.h>
65 #include <errno.h>
66 #include <pthread.h>
67 #include <pthread_np.h>
68 #include "un-namespace.h"
69
70 #include "thr_private.h"
71
72 __weak_reference(_pthread_mutexattr_init, pthread_mutexattr_init);
73 __weak_reference(_pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np);
74 __weak_reference(_pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np);
75 __weak_reference(_pthread_mutexattr_gettype, pthread_mutexattr_gettype);
76 __weak_reference(_pthread_mutexattr_settype, pthread_mutexattr_settype);
77 __weak_reference(_pthread_mutexattr_destroy, pthread_mutexattr_destroy);
78 __weak_reference(_pthread_mutexattr_getpshared, pthread_mutexattr_getpshared);
79 __weak_reference(_pthread_mutexattr_setpshared, pthread_mutexattr_setpshared);
80 __weak_reference(_pthread_mutexattr_getprotocol, pthread_mutexattr_getprotocol);
81 __weak_reference(_pthread_mutexattr_setprotocol, pthread_mutexattr_setprotocol);
82 __weak_reference(_pthread_mutexattr_getprioceiling, pthread_mutexattr_getprioceiling);
83 __weak_reference(_pthread_mutexattr_setprioceiling, pthread_mutexattr_setprioceiling);
84
85 int
_pthread_mutexattr_init(pthread_mutexattr_t * attr)86 _pthread_mutexattr_init(pthread_mutexattr_t *attr)
87 {
88 int ret;
89 pthread_mutexattr_t pattr;
90
91 if ((pattr = (pthread_mutexattr_t)
92 malloc(sizeof(struct pthread_mutex_attr))) == NULL) {
93 ret = ENOMEM;
94 } else {
95 memcpy(pattr, &_pthread_mutexattr_default,
96 sizeof(struct pthread_mutex_attr));
97 *attr = pattr;
98 ret = 0;
99 }
100 return (ret);
101 }
102
103 int
_pthread_mutexattr_setkind_np(pthread_mutexattr_t * attr,int kind)104 _pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind)
105 {
106 int ret;
107 if (attr == NULL || *attr == NULL) {
108 errno = EINVAL;
109 ret = -1;
110 } else {
111 (*attr)->m_type = kind;
112 ret = 0;
113 }
114 return(ret);
115 }
116
117 int
_pthread_mutexattr_getkind_np(pthread_mutexattr_t attr)118 _pthread_mutexattr_getkind_np(pthread_mutexattr_t attr)
119 {
120 int ret;
121 if (attr == NULL) {
122 errno = EINVAL;
123 ret = -1;
124 } else {
125 ret = attr->m_type;
126 }
127 return(ret);
128 }
129
130 int
_pthread_mutexattr_settype(pthread_mutexattr_t * attr,int type)131 _pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type)
132 {
133 int ret;
134 if (attr == NULL || *attr == NULL || type >= PTHREAD_MUTEX_TYPE_MAX) {
135 ret = EINVAL;
136 } else {
137 (*attr)->m_type = type;
138 ret = 0;
139 }
140 return(ret);
141 }
142
143 int
_pthread_mutexattr_gettype(pthread_mutexattr_t * attr,int * type)144 _pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type)
145 {
146 int ret;
147
148 if (attr == NULL || *attr == NULL || (*attr)->m_type >=
149 PTHREAD_MUTEX_TYPE_MAX) {
150 ret = EINVAL;
151 } else {
152 *type = (*attr)->m_type;
153 ret = 0;
154 }
155 return ret;
156 }
157
158 int
_pthread_mutexattr_destroy(pthread_mutexattr_t * attr)159 _pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
160 {
161 int ret;
162 if (attr == NULL || *attr == NULL) {
163 ret = EINVAL;
164 } else {
165 free(*attr);
166 *attr = NULL;
167 ret = 0;
168 }
169 return(ret);
170 }
171
172 int
_pthread_mutexattr_getpshared(const pthread_mutexattr_t * attr,int * pshared)173 _pthread_mutexattr_getpshared(const pthread_mutexattr_t *attr,
174 int *pshared)
175 {
176
177 if (attr == NULL || *attr == NULL)
178 return (EINVAL);
179
180 *pshared = PTHREAD_PROCESS_PRIVATE;
181 return (0);
182 }
183
184 int
_pthread_mutexattr_setpshared(pthread_mutexattr_t * attr,int pshared)185 _pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared)
186 {
187
188 if (attr == NULL || *attr == NULL)
189 return (EINVAL);
190
191 /* Only PTHREAD_PROCESS_PRIVATE is supported. */
192 if (pshared != PTHREAD_PROCESS_PRIVATE)
193 return (EINVAL);
194
195 return (0);
196 }
197
198 int
_pthread_mutexattr_getprotocol(pthread_mutexattr_t * mattr,int * protocol)199 _pthread_mutexattr_getprotocol(pthread_mutexattr_t *mattr, int *protocol)
200 {
201 int ret = 0;
202
203 if ((mattr == NULL) || (*mattr == NULL))
204 ret = EINVAL;
205 else
206 *protocol = (*mattr)->m_protocol;
207
208 return(ret);
209 }
210
211 int
_pthread_mutexattr_setprotocol(pthread_mutexattr_t * mattr,int protocol)212 _pthread_mutexattr_setprotocol(pthread_mutexattr_t *mattr, int protocol)
213 {
214 int ret = 0;
215
216 if ((mattr == NULL) || (*mattr == NULL) ||
217 (protocol < PTHREAD_PRIO_NONE) || (protocol > PTHREAD_PRIO_PROTECT))
218 ret = EINVAL;
219 else {
220 (*mattr)->m_protocol = protocol;
221 (*mattr)->m_ceiling = THR_MAX_RR_PRIORITY;
222 }
223 return(ret);
224 }
225
226 int
_pthread_mutexattr_getprioceiling(pthread_mutexattr_t * mattr,int * prioceiling)227 _pthread_mutexattr_getprioceiling(pthread_mutexattr_t *mattr, int *prioceiling)
228 {
229 int ret = 0;
230
231 if ((mattr == NULL) || (*mattr == NULL))
232 ret = EINVAL;
233 else if ((*mattr)->m_protocol != PTHREAD_PRIO_PROTECT)
234 ret = EINVAL;
235 else
236 *prioceiling = (*mattr)->m_ceiling;
237
238 return(ret);
239 }
240
241 int
_pthread_mutexattr_setprioceiling(pthread_mutexattr_t * mattr,int prioceiling)242 _pthread_mutexattr_setprioceiling(pthread_mutexattr_t *mattr, int prioceiling)
243 {
244 int ret = 0;
245
246 if ((mattr == NULL) || (*mattr == NULL))
247 ret = EINVAL;
248 else if ((*mattr)->m_protocol != PTHREAD_PRIO_PROTECT)
249 ret = EINVAL;
250 else
251 (*mattr)->m_ceiling = prioceiling;
252
253 return(ret);
254 }
255
256