xref: /freebsd/lib/libthr/thread/thr_condattr.c (revision 4c9a0adad18263ec8725d9bfc5f560c6ad1da8bd)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the author nor the names of any co-contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 #include "namespace.h"
34 #include <stdlib.h>
35 #include <string.h>
36 #include <errno.h>
37 #include <pthread.h>
38 #include "un-namespace.h"
39 
40 #include "thr_private.h"
41 
42 __weak_reference(_pthread_condattr_init, pthread_condattr_init);
43 __weak_reference(_pthread_condattr_destroy, pthread_condattr_destroy);
44 __weak_reference(_pthread_condattr_getclock, pthread_condattr_getclock);
45 __weak_reference(_pthread_condattr_setclock, pthread_condattr_setclock);
46 __weak_reference(_pthread_condattr_getpshared, pthread_condattr_getpshared);
47 __weak_reference(_pthread_condattr_setpshared, pthread_condattr_setpshared);
48 
49 int
50 _pthread_condattr_init(pthread_condattr_t *attr)
51 {
52 	pthread_condattr_t pattr;
53 	int ret;
54 
55 	if ((pattr = (pthread_condattr_t)
56 	    malloc(sizeof(struct pthread_cond_attr))) == NULL) {
57 		ret = ENOMEM;
58 	} else {
59 		memcpy(pattr, &_pthread_condattr_default,
60 		    sizeof(struct pthread_cond_attr));
61 		*attr = pattr;
62 		ret = 0;
63 	}
64 	return (ret);
65 }
66 
67 int
68 _pthread_condattr_destroy(pthread_condattr_t *attr)
69 {
70 	int	ret;
71 
72 	if (attr == NULL || *attr == NULL) {
73 		ret = EINVAL;
74 	} else {
75 		free(*attr);
76 		*attr = NULL;
77 		ret = 0;
78 	}
79 	return(ret);
80 }
81 
82 int
83 _pthread_condattr_getclock(const pthread_condattr_t * __restrict attr,
84     clockid_t * __restrict clock_id)
85 {
86 	if (attr == NULL || *attr == NULL)
87 		return (EINVAL);
88 	*clock_id = (*attr)->c_clockid;
89 	return (0);
90 }
91 
92 int
93 _pthread_condattr_setclock(pthread_condattr_t *attr, clockid_t clock_id)
94 {
95 	if (attr == NULL || *attr == NULL)
96 		return (EINVAL);
97 	if (clock_id != CLOCK_REALTIME &&
98 	    clock_id != CLOCK_VIRTUAL &&
99 	    clock_id != CLOCK_PROF &&
100 	    clock_id != CLOCK_MONOTONIC) {
101 		return  (EINVAL);
102 	}
103 	(*attr)->c_clockid = clock_id;
104 	return (0);
105 }
106 
107 int
108 _pthread_condattr_getpshared(const pthread_condattr_t * __restrict attr,
109     int * __restrict pshared)
110 {
111 
112 	if (attr == NULL || *attr == NULL)
113 		return (EINVAL);
114 	*pshared = (*attr)->c_pshared;
115 	return (0);
116 }
117 
118 int
119 _pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared)
120 {
121 
122 	if (attr == NULL || *attr == NULL ||
123 	    (pshared != PTHREAD_PROCESS_PRIVATE &&
124 	    pshared != PTHREAD_PROCESS_SHARED))
125 		return (EINVAL);
126 	(*attr)->c_pshared = pshared;
127 	return (0);
128 }
129