1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include "lint.h"
28 #include "thr_uberdata.h"
29
30 /*
31 * pthread_condattr_init: allocates the cond attribute object and
32 * initializes it with the default values.
33 */
34 #pragma weak _pthread_condattr_init = pthread_condattr_init
35 int
pthread_condattr_init(pthread_condattr_t * attr)36 pthread_condattr_init(pthread_condattr_t *attr)
37 {
38 cvattr_t *ap;
39
40 if ((ap = lmalloc(sizeof (cvattr_t))) == NULL)
41 return (ENOMEM);
42 ap->pshared = PTHREAD_PROCESS_PRIVATE;
43 ap->clockid = CLOCK_REALTIME;
44 attr->__pthread_condattrp = ap;
45 return (0);
46 }
47
48 /*
49 * pthread_condattr_destroy: frees the cond attribute object and
50 * invalidates it with NULL value.
51 */
52 int
pthread_condattr_destroy(pthread_condattr_t * attr)53 pthread_condattr_destroy(pthread_condattr_t *attr)
54 {
55 if (attr == NULL || attr->__pthread_condattrp == NULL)
56 return (EINVAL);
57 lfree(attr->__pthread_condattrp, sizeof (cvattr_t));
58 attr->__pthread_condattrp = NULL;
59 return (0);
60 }
61
62 /*
63 * pthread_condattr_setclock: sets the clockid attribute.
64 */
65 int
pthread_condattr_setclock(pthread_condattr_t * attr,clockid_t clock_id)66 pthread_condattr_setclock(pthread_condattr_t *attr, clockid_t clock_id)
67 {
68 cvattr_t *ap;
69
70 if (attr != NULL && (ap = attr->__pthread_condattrp) != NULL &&
71 (clock_id == CLOCK_REALTIME || clock_id == CLOCK_HIGHRES)) {
72 ap->clockid = clock_id;
73 return (0);
74 }
75 return (EINVAL);
76 }
77
78 /*
79 * pthread_condattr_getclock: gets the shared attr.
80 */
81 int
pthread_condattr_getclock(const pthread_condattr_t * attr,clockid_t * clock_id)82 pthread_condattr_getclock(const pthread_condattr_t *attr, clockid_t *clock_id)
83 {
84 cvattr_t *ap;
85
86 if (attr != NULL && (ap = attr->__pthread_condattrp) != NULL &&
87 clock_id != NULL) {
88 *clock_id = ap->clockid;
89 return (0);
90 }
91 return (EINVAL);
92 }
93
94
95 /*
96 * pthread_condattr_setpshared: sets the shared attr to PRIVATE or SHARED.
97 * This is equivalent to setting USYNC_PROCESS/USYNC_THREAD flag in cond_init().
98 */
99 int
pthread_condattr_setpshared(pthread_condattr_t * attr,int pshared)100 pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared)
101 {
102 cvattr_t *ap;
103
104 if (attr != NULL && (ap = attr->__pthread_condattrp) != NULL &&
105 (pshared == PTHREAD_PROCESS_PRIVATE ||
106 pshared == PTHREAD_PROCESS_SHARED)) {
107 ap->pshared = pshared;
108 return (0);
109 }
110 return (EINVAL);
111 }
112
113 /*
114 * pthread_condattr_getpshared: gets the shared attr.
115 */
116 #pragma weak _pthread_condattr_getpshared = pthread_condattr_getpshared
117 int
pthread_condattr_getpshared(const pthread_condattr_t * attr,int * pshared)118 pthread_condattr_getpshared(const pthread_condattr_t *attr, int *pshared)
119 {
120 cvattr_t *ap;
121
122 if (attr != NULL && (ap = attr->__pthread_condattrp) != NULL &&
123 pshared != NULL) {
124 *pshared = ap->pshared;
125 return (0);
126 }
127 return (EINVAL);
128 }
129
130 /*
131 * pthread_cond_init: Initializes the cond object. It copies the
132 * pshared attr into type argument and calls cond_init().
133 */
134 #pragma weak _pthread_cond_init = pthread_cond_init
135 int
pthread_cond_init(pthread_cond_t * cond,const pthread_condattr_t * attr)136 pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
137 {
138 cvattr_t *ap;
139 int type;
140 clockid_t clock_id;
141 int error;
142
143 if (attr == NULL) {
144 type = PTHREAD_PROCESS_PRIVATE;
145 clock_id = CLOCK_REALTIME;
146 } else if ((ap = attr->__pthread_condattrp) != NULL) {
147 type = ap->pshared;
148 clock_id = ap->clockid;
149 } else {
150 return (EINVAL);
151 }
152
153 if (clock_id != CLOCK_REALTIME && clock_id != CLOCK_HIGHRES)
154 error = EINVAL;
155 else if ((error = cond_init((cond_t *)cond, type, NULL)) == 0)
156 ((cond_t *)cond)->cond_clockid = (uint8_t)clock_id;
157
158 return (error);
159 }
160