1 /* 2 * Copyright (c) 2005 David Xu <davidxu@freebsd.org> 3 * Copyright (C) 2003 Daniel M. Eischen <deischen@freebsd.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 #include "namespace.h" 29 #include <machine/tls.h> 30 #include <errno.h> 31 #include <pthread.h> 32 #include "un-namespace.h" 33 34 #include "thr_private.h" 35 36 int 37 _pthread_detach(pthread_t pthread) 38 { 39 struct pthread *curthread = tls_get_curthread(); 40 int rval; 41 42 if (pthread == NULL) 43 return (EINVAL); 44 45 THREAD_LIST_LOCK(curthread); 46 if ((rval = _thr_find_thread(curthread, pthread, 47 /*include dead*/1)) != 0) { 48 THREAD_LIST_UNLOCK(curthread); 49 return (rval); 50 } 51 52 /* Check if the thread is already detached or has a joiner. */ 53 if ((pthread->tlflags & TLFLAGS_DETACHED) != 0 || 54 (pthread->joiner != NULL)) { 55 THREAD_LIST_UNLOCK(curthread); 56 return (EINVAL); 57 } 58 59 /* Flag the thread as detached. */ 60 pthread->tlflags |= TLFLAGS_DETACHED; 61 if (pthread->state == PS_DEAD) 62 THR_GCLIST_ADD(pthread); 63 THREAD_LIST_UNLOCK(curthread); 64 65 return (0); 66 } 67 68 __strong_reference(_pthread_detach, pthread_detach); 69