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. 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.
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
32 * $Id: uthread_detach.c,v 1.8 1999/06/20 08:28:15 jb Exp $
37 #include "pthread_private.h"
40 pthread_detach(pthread_t pthread)
44 pthread_t next_thread;
46 /* Check for invalid calling parameters: */
47 if (pthread == NULL || pthread->magic != PTHREAD_MAGIC)
48 /* Return an invalid argument error: */
51 /* Check if the thread has not been detached: */
52 else if ((pthread->attr.flags & PTHREAD_DETACHED) == 0) {
53 /* Flag the thread as detached: */
54 pthread->attr.flags |= PTHREAD_DETACHED;
57 * Defer signals to protect the scheduling queues from
58 * access by the signal handler:
60 _thread_kern_sig_defer();
62 /* Enter a loop to bring all threads off the join queue: */
63 while ((next_thread = TAILQ_FIRST(&pthread->join_queue)) != NULL) {
64 /* Remove the thread from the queue: */
65 TAILQ_REMOVE(&pthread->join_queue, next_thread, qe);
67 /* Make the thread run: */
68 PTHREAD_NEW_STATE(next_thread,PS_RUNNING);
72 * Undefer and handle pending signals, yielding if a
73 * scheduling signal occurred while in the critical region.
75 _thread_kern_sig_undefer();
77 /* Return an error: */
80 /* Return the completion status: */