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