1 /*
2  * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>.
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  * $DragonFly: src/lib/libthread_xu/thread/thr_condattr.c,v 1.3 2005/03/15 12:01:51 davidxu Exp $
33  */
34 #include <stdlib.h>
35 #include <string.h>
36 #include <errno.h>
37 #include <pthread.h>
38 #include "thr_private.h"
39 
40 __weak_reference(_pthread_condattr_init, pthread_condattr_init);
41 __weak_reference(_pthread_condattr_destroy, pthread_condattr_destroy);
42 __weak_reference(_pthread_condattr_getclock, pthread_condattr_getclock);
43 __weak_reference(_pthread_condattr_setclock, pthread_condattr_setclock);
44 __weak_reference(_pthread_condattr_getpshared, pthread_condattr_getpshared);
45 __weak_reference(_pthread_condattr_setpshared, pthread_condattr_setpshared);
46 
47 int
48 _pthread_condattr_init(pthread_condattr_t *attr)
49 {
50 	pthread_condattr_t pattr;
51 	int ret;
52 
53 	if ((pattr = (pthread_condattr_t)
54 	    malloc(sizeof(struct pthread_cond_attr))) == NULL) {
55 		ret = ENOMEM;
56 	} else {
57 		memcpy(pattr, &_pthread_condattr_default,
58 		    sizeof(struct pthread_cond_attr));
59 		*attr = pattr;
60 		ret = 0;
61 	}
62 	return (ret);
63 }
64 
65 int
66 _pthread_condattr_destroy(pthread_condattr_t *attr)
67 {
68 	int	ret;
69 
70 	if (attr == NULL || *attr == NULL) {
71 		ret = EINVAL;
72 	} else {
73 		free(*attr);
74 		*attr = NULL;
75 		ret = 0;
76 	}
77 	return(ret);
78 }
79 
80 int
81 _pthread_condattr_getclock(const pthread_condattr_t *attr,
82        clockid_t *clock_id)
83 {
84 	if (attr == NULL || *attr == NULL)
85 		return (EINVAL);
86 	*clock_id = (*attr)->c_clockid;
87 	return (0);
88 }
89 
90 int
91 _pthread_condattr_setclock(pthread_condattr_t *attr,
92        clockid_t clock_id)
93 {
94 	if (attr == NULL || *attr == NULL)
95 		return (EINVAL);
96 	if (clock_id != CLOCK_REALTIME ||
97 	    clock_id != CLOCK_MONOTONIC)
98 		return (EINVAL);
99 	(*attr)->c_clockid = clock_id;
100 	return (0);
101 }
102 
103 int
104 _pthread_condattr_getpshared(const pthread_condattr_t *attr,
105 	int *pshared)
106 {
107 	if (attr == NULL || *attr == NULL)
108 		return (EINVAL);
109 
110 	pshared = PTHREAD_PROCESS_PRIVATE;
111 	return (0);
112 }
113 
114 int
115 _pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared)
116 {
117 	if (attr == NULL || *attr == NULL)
118 		return (EINVAL);
119 
120 	if  (pshared != PTHREAD_PROCESS_PRIVATE)
121 		return (EINVAL);
122 	return (0);
123 }
124