1/*
2 * Copyright (c) 1995 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 *
| 1/*
2 * Copyright (c) 1995 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 * $FreeBSD: head/lib/libkse/thread/thr_detach.c 114187 2003-04-28 23:56:12Z deischen $
| 32 * $FreeBSD: head/lib/libkse/thread/thr_detach.c 115278 2003-05-24 02:29:25Z deischen $
|
33 */
34#include <sys/types.h>
35#include <machine/atomic.h>
36#include <errno.h>
37#include <pthread.h>
38#include "thr_private.h"
39
40__weak_reference(_pthread_detach, pthread_detach);
41
42int
43_pthread_detach(pthread_t pthread)
44{
45 struct pthread *curthread = _get_curthread();
46 struct pthread *joiner;
47 int rval = 0;
48
49 /* Check for invalid calling parameters: */
50 if (pthread == NULL || pthread->magic != THR_MAGIC)
51 /* Return an invalid argument error: */
52 rval = EINVAL;
53
54 else if ((rval = _thr_ref_add(curthread, pthread,
55 /*include dead*/1)) != 0) {
56 /* Return an error: */
57 }
58
59 /* Check if the thread is already detached: */
60 else if ((pthread->attr.flags & PTHREAD_DETACHED) != 0) {
61 /* Return an error: */
62 _thr_ref_delete(curthread, pthread);
63 rval = EINVAL;
64 } else {
65 /* Lock the detached thread: */
66 THR_SCHED_LOCK(curthread, pthread);
67
68 /* Flag the thread as detached: */
69 pthread->attr.flags |= PTHREAD_DETACHED;
70
71 /* Retrieve any joining thread and remove it: */
72 joiner = pthread->joiner;
| 33 */
34#include <sys/types.h>
35#include <machine/atomic.h>
36#include <errno.h>
37#include <pthread.h>
38#include "thr_private.h"
39
40__weak_reference(_pthread_detach, pthread_detach);
41
42int
43_pthread_detach(pthread_t pthread)
44{
45 struct pthread *curthread = _get_curthread();
46 struct pthread *joiner;
47 int rval = 0;
48
49 /* Check for invalid calling parameters: */
50 if (pthread == NULL || pthread->magic != THR_MAGIC)
51 /* Return an invalid argument error: */
52 rval = EINVAL;
53
54 else if ((rval = _thr_ref_add(curthread, pthread,
55 /*include dead*/1)) != 0) {
56 /* Return an error: */
57 }
58
59 /* Check if the thread is already detached: */
60 else if ((pthread->attr.flags & PTHREAD_DETACHED) != 0) {
61 /* Return an error: */
62 _thr_ref_delete(curthread, pthread);
63 rval = EINVAL;
64 } else {
65 /* Lock the detached thread: */
66 THR_SCHED_LOCK(curthread, pthread);
67
68 /* Flag the thread as detached: */
69 pthread->attr.flags |= PTHREAD_DETACHED;
70
71 /* Retrieve any joining thread and remove it: */
72 joiner = pthread->joiner;
|
73 pthread->joiner = NULL;
74 if (joiner->kseg == pthread->kseg) {
| 73 if ((joiner != NULL) && (joiner->kseg == pthread->kseg)) {
|
75 /*
76 * We already own the scheduler lock for the joiner.
77 * Take advantage of that and make the joiner runnable.
78 */
79 if (joiner->join_status.thread == pthread) {
80 /*
81 * Set the return value for the woken thread:
82 */
83 joiner->join_status.error = ESRCH;
84 joiner->join_status.ret = NULL;
85 joiner->join_status.thread = NULL;
86
87 _thr_setrunnable_unlocked(joiner);
88 }
89 joiner = NULL;
90 }
91 THR_SCHED_UNLOCK(curthread, pthread);
| 74 /*
75 * We already own the scheduler lock for the joiner.
76 * Take advantage of that and make the joiner runnable.
77 */
78 if (joiner->join_status.thread == pthread) {
79 /*
80 * Set the return value for the woken thread:
81 */
82 joiner->join_status.error = ESRCH;
83 joiner->join_status.ret = NULL;
84 joiner->join_status.thread = NULL;
85
86 _thr_setrunnable_unlocked(joiner);
87 }
88 joiner = NULL;
89 }
90 THR_SCHED_UNLOCK(curthread, pthread);
|
92 _thr_ref_delete(curthread, pthread);
| |
93
94 /* See if there is a thread waiting in pthread_join(): */
| 91
92 /* See if there is a thread waiting in pthread_join(): */
|
95 if (joiner != NULL && _thr_ref_add(curthread, joiner, 0) == 0) {
| 93 if ((joiner != NULL) &&
94 (_thr_ref_add(curthread, joiner, 0) == 0)) {
|
96 /* Lock the joiner before fiddling with it. */
97 THR_SCHED_LOCK(curthread, joiner);
98 if (joiner->join_status.thread == pthread) {
99 /*
100 * Set the return value for the woken thread:
101 */
102 joiner->join_status.error = ESRCH;
103 joiner->join_status.ret = NULL;
104 joiner->join_status.thread = NULL;
105
106 _thr_setrunnable_unlocked(joiner);
107 }
108 THR_SCHED_UNLOCK(curthread, joiner);
109 _thr_ref_delete(curthread, joiner);
110 }
| 95 /* Lock the joiner before fiddling with it. */
96 THR_SCHED_LOCK(curthread, joiner);
97 if (joiner->join_status.thread == pthread) {
98 /*
99 * Set the return value for the woken thread:
100 */
101 joiner->join_status.error = ESRCH;
102 joiner->join_status.ret = NULL;
103 joiner->join_status.thread = NULL;
104
105 _thr_setrunnable_unlocked(joiner);
106 }
107 THR_SCHED_UNLOCK(curthread, joiner);
108 _thr_ref_delete(curthread, joiner);
109 }
|
| 110 _thr_ref_delete(curthread, pthread);
|
111 }
112
113 /* Return the completion status: */
114 return (rval);
115}
| 111 }
112
113 /* Return the completion status: */
114 return (rval);
115}
|