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 REGENTS 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 */
33#include <errno.h>
34#ifdef _THREAD_SAFE
35#include <pthread.h>
36#include "pthread_private.h"
37
38int
39pthread_detach(pthread_t * p_pthread)
40{
41 int rval = 0;
42 int status;
43 pthread_t next_thread;
44 pthread_t pthread;
45
46 /* Block signals: */
47 _thread_kern_sig_block(&status);
48
49 /* Check for invalid calling parameters: */
50 if (p_pthread == NULL || (pthread = *p_pthread) == NULL) {
51 /* Return an invalid argument error: */
52 errno = EINVAL;
53 rval = -1;
54 }
55 /* Check if the thread has not been detached: */
56 else if ((pthread->attr.flags & PTHREAD_DETACHED) == 0) {
57 /* Flag the thread as detached: */
58 pthread->attr.flags |= PTHREAD_DETACHED;
59
60 /* Enter a loop to bring all threads off the join queue: */
61 while ((next_thread = _thread_queue_deq(&pthread->join_queue)) != NULL) {
62 /* Make the thread run: */
63 PTHREAD_NEW_STATE(next_thread,PS_RUNNING);
64 }
65
66 /*
67 * NULL the thread pointer now that the thread has been
68 * detached:
69 */
70 *p_pthread = NULL;
71 } else {
72 /* Return an error: */
73 errno = ESRCH;
74 rval = -1;
75 }
76
77 /* Unblock signals: */
78 _thread_kern_sig_unblock(status);
79
80 /* Return the completion status: */
81 return (rval);
82}
83#endif