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author | julian <julian@FreeBSD.org> | 1996-01-22 00:23:58 +0000 |
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committer | julian <julian@FreeBSD.org> | 1996-01-22 00:23:58 +0000 |
commit | 529743d354ac402b1302b397159146fa46c180c5 (patch) | |
tree | d93df8a19a0cab699bfc2c0b9e4bc691251efa16 /lib/libpthread/thread/thr_detach.c | |
parent | 619b731f5bb5e09dcf1eaf1fbd96383ca64398fd (diff) | |
download | FreeBSD-src-529743d354ac402b1302b397159146fa46c180c5.zip FreeBSD-src-529743d354ac402b1302b397159146fa46c180c5.tar.gz |
Reviewed by: julian
Submitted by: john birrel
One version of the pthreads library
another will follow with differnt actions under some cases..
not QUITE complete
Diffstat (limited to 'lib/libpthread/thread/thr_detach.c')
-rw-r--r-- | lib/libpthread/thread/thr_detach.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/lib/libpthread/thread/thr_detach.c b/lib/libpthread/thread/thr_detach.c new file mode 100644 index 0000000..f24d16f --- /dev/null +++ b/lib/libpthread/thread/thr_detach.c @@ -0,0 +1,83 @@ +/* + * 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 REGENTS 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. + * + */ +#include <errno.h> +#ifdef _THREAD_SAFE +#include <pthread.h> +#include "pthread_private.h" + +int +pthread_detach(pthread_t * p_pthread) +{ + int rval = 0; + int status; + pthread_t next_thread; + pthread_t pthread; + + /* Block signals: */ + _thread_kern_sig_block(&status); + + /* Check for invalid calling parameters: */ + if (p_pthread == NULL || (pthread = *p_pthread) == NULL) { + /* Return an invalid argument error: */ + _thread_seterrno(_thread_run, EINVAL); + rval = -1; + } + /* 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; + + /* Enter a loop to bring all threads off the join queue: */ + while ((next_thread = _thread_queue_deq(&pthread->join_queue)) != NULL) { + /* Make the thread run: */ + next_thread->state = PS_RUNNING; + } + + /* + * NULL the thread pointer now that the thread has been + * detached: + */ + *p_pthread = NULL; + } else { + /* Return an error: */ + _thread_seterrno(_thread_run, ESRCH); + rval = -1; + } + + /* Unblock signals: */ + _thread_kern_sig_unblock(status); + + /* Return the completion status: */ + return (rval); +} +#endif |