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 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 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 35 #include <sys/types.h> 36 #include <errno.h> 37 #include <pthread.h> 38 39 #include "thr_private.h" 40 41 __weak_reference(_pthread_detach, pthread_detach); 42 43 int 44 _pthread_detach(pthread_t pthread) 45 { 46 struct pthread *curthread = _get_curthread(); 47 int rval; 48 49 if (pthread == NULL) 50 return (EINVAL); 51 52 THREAD_LIST_LOCK(curthread); 53 if ((rval = _thr_find_thread(curthread, pthread, 54 /*include dead*/1)) != 0) { 55 THREAD_LIST_UNLOCK(curthread); 56 return (rval); 57 } 58 59 /* Check if the thread is already detached or has a joiner. */ 60 if ((pthread->tlflags & TLFLAGS_DETACHED) != 0 || 61 (pthread->joiner != NULL)) { 62 THREAD_LIST_UNLOCK(curthread); 63 return (EINVAL); 64 } 65 66 /* Flag the thread as detached. */ 67 pthread->tlflags |= TLFLAGS_DETACHED; 68 if (pthread->state == PS_DEAD) 69 THR_GCLIST_ADD(pthread); 70 THREAD_LIST_UNLOCK(curthread); 71 72 return (0); 73 } 74