84 lines
3.0 KiB
C
84 lines
3.0 KiB
C
/*
|
|
* Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by John Birrell.
|
|
* 4. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#include <errno.h>
|
|
#ifdef _THREAD_SAFE
|
|
#include <pthread.h>
|
|
#include "pthread_private.h"
|
|
|
|
int
|
|
pthread_detach(pthread_t pthread)
|
|
{
|
|
int rval = 0;
|
|
int status;
|
|
pthread_t next_thread;
|
|
|
|
/* Check for invalid calling parameters: */
|
|
if (pthread == NULL || pthread->magic != PTHREAD_MAGIC)
|
|
/* Return an invalid argument error: */
|
|
rval = EINVAL;
|
|
|
|
/* Check if the thread has not been detached: */
|
|
else if ((pthread->attr.flags & PTHREAD_DETACHED) == 0) {
|
|
/* Flag the thread as detached: */
|
|
pthread->attr.flags |= PTHREAD_DETACHED;
|
|
|
|
/*
|
|
* Defer signals to protect the scheduling queues from
|
|
* access by the signal handler:
|
|
*/
|
|
_thread_kern_sig_defer();
|
|
|
|
/* Enter a loop to bring all threads off the join queue: */
|
|
while ((next_thread = TAILQ_FIRST(&pthread->join_queue)) != NULL) {
|
|
/* Remove the thread from the queue: */
|
|
TAILQ_REMOVE(&pthread->join_queue, next_thread, qe);
|
|
|
|
/* Make the thread run: */
|
|
PTHREAD_NEW_STATE(next_thread,PS_RUNNING);
|
|
}
|
|
|
|
/*
|
|
* Undefer and handle pending signals, yielding if a
|
|
* scheduling signal occurred while in the critical region.
|
|
*/
|
|
_thread_kern_sig_undefer();
|
|
} else
|
|
/* Return an error: */
|
|
rval = EINVAL;
|
|
|
|
/* Return the completion status: */
|
|
return (rval);
|
|
}
|
|
#endif
|