xref: /freebsd/lib/libthr/thread/thr_condattr.c (revision 95ee2897e98f5d444f26ed2334cc7c439f9c16c6)
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 __FBSDID("$FreeBSD$");
34 
35 #include "namespace.h"
36 #include <stdlib.h>
37 #include <string.h>
38 #include <errno.h>
39 #include <pthread.h>
40 #include "un-namespace.h"
41 
42 #include "thr_private.h"
43 
44 __weak_reference(_pthread_condattr_init, pthread_condattr_init);
45 __weak_reference(_pthread_condattr_destroy, pthread_condattr_destroy);
46 __weak_reference(_pthread_condattr_getclock, pthread_condattr_getclock);
47 __weak_reference(_pthread_condattr_setclock, pthread_condattr_setclock);
48 __weak_reference(_pthread_condattr_getpshared, pthread_condattr_getpshared);
49 __weak_reference(_pthread_condattr_setpshared, pthread_condattr_setpshared);
50 
51 int
52 _pthread_condattr_init(pthread_condattr_t *attr)
53 {
54 	pthread_condattr_t pattr;
55 	int ret;
56 
57 	if ((pattr = (pthread_condattr_t)
58 	    malloc(sizeof(struct pthread_cond_attr))) == NULL) {
59 		ret = ENOMEM;
60 	} else {
61 		memcpy(pattr, &_pthread_condattr_default,
62 		    sizeof(struct pthread_cond_attr));
63 		*attr = pattr;
64 		ret = 0;
65 	}
66 	return (ret);
67 }
68 
69 int
70 _pthread_condattr_destroy(pthread_condattr_t *attr)
71 {
72 	int	ret;
73 
74 	if (attr == NULL || *attr == NULL) {
75 		ret = EINVAL;
76 	} else {
77 		free(*attr);
78 		*attr = NULL;
79 		ret = 0;
80 	}
81 	return(ret);
82 }
83 
84 int
85 _pthread_condattr_getclock(const pthread_condattr_t * __restrict attr,
86     clockid_t * __restrict clock_id)
87 {
88 	if (attr == NULL || *attr == NULL)
89 		return (EINVAL);
90 	*clock_id = (*attr)->c_clockid;
91 	return (0);
92 }
93 
94 int
95 _pthread_condattr_setclock(pthread_condattr_t *attr, clockid_t clock_id)
96 {
97 	if (attr == NULL || *attr == NULL)
98 		return (EINVAL);
99 	if (clock_id != CLOCK_REALTIME &&
100 	    clock_id != CLOCK_VIRTUAL &&
101 	    clock_id != CLOCK_PROF &&
102 	    clock_id != CLOCK_MONOTONIC) {
103 		return  (EINVAL);
104 	}
105 	(*attr)->c_clockid = clock_id;
106 	return (0);
107 }
108 
109 int
110 _pthread_condattr_getpshared(const pthread_condattr_t * __restrict attr,
111     int * __restrict pshared)
112 {
113 
114 	if (attr == NULL || *attr == NULL)
115 		return (EINVAL);
116 	*pshared = (*attr)->c_pshared;
117 	return (0);
118 }
119 
120 int
121 _pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared)
122 {
123 
124 	if (attr == NULL || *attr == NULL ||
125 	    (pshared != PTHREAD_PROCESS_PRIVATE &&
126 	    pshared != PTHREAD_PROCESS_SHARED))
127 		return (EINVAL);
128 	(*attr)->c_pshared = pshared;
129 	return (0);
130 }
131