2 * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include "pthread_private.h"
35 __weak_reference(_pthread_detach, pthread_detach);
38 _pthread_detach(pthread_t pthread)
42 /* Check for invalid calling parameters: */
43 if (pthread == NULL || pthread->magic != PTHREAD_MAGIC)
44 /* Return an invalid argument error: */
47 /* Check if the thread has not been detached: */
48 else if ((pthread->attr.flags & PTHREAD_DETACHED) == 0) {
49 /* Flag the thread as detached: */
50 pthread->attr.flags |= PTHREAD_DETACHED;
53 * Defer signals to protect the scheduling queues from
54 * access by the signal handler:
56 _thread_kern_sig_defer();
58 /* Check if there is a joiner: */
59 if (pthread->joiner != NULL) {
60 struct pthread *joiner = pthread->joiner;
62 /* Make the thread runnable: */
63 PTHREAD_NEW_STATE(joiner, PS_RUNNING);
65 /* Set the return value for the woken thread: */
66 joiner->join_status.error = ESRCH;
67 joiner->join_status.ret = NULL;
68 joiner->join_status.thread = NULL;
71 * Disconnect the joiner from the thread being detached:
73 pthread->joiner = NULL;
77 * Undefer and handle pending signals, yielding if a
78 * scheduling signal occurred while in the critical region.
80 _thread_kern_sig_undefer();
82 /* Return an error: */
85 /* Return the completion status: */