thr_detach.c revision 157457
180260Skris/* 280260Skris * Copyright (c) 2005 David Xu <davidxu@freebsd.org> 380260Skris * Copyright (C) 2003 Daniel M. Eischen <deischen@freebsd.org> 480260Skris * All rights reserved. 544743Smarkm * 644743Smarkm * Redistribution and use in source and binary forms, with or without 744743Smarkm * modification, are permitted provided that the following conditions 844743Smarkm * are met: 944743Smarkm * 1. Redistributions of source code must retain the above copyright 1044743Smarkm * notice unmodified, this list of conditions, and the following 1144743Smarkm * disclaimer. 1244743Smarkm * 2. Redistributions in binary form must reproduce the above copyright 1380260Skris * notice, this list of conditions and the following disclaimer in the 1480260Skris * documentation and/or other materials provided with the distribution. 1580260Skris * 1644743Smarkm * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1744743Smarkm * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1844743Smarkm * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 1944743Smarkm * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2044743Smarkm * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2180260Skris * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2280260Skris * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2380260Skris * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2480260Skris * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2580260Skris * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2680260Skris * 2780260Skris * $FreeBSD: head/lib/libthr/thread/thr_detach.c 157457 2006-04-04 02:57:49Z davidxu $ 2880260Skris * 2980260Skris */ 3080260Skris 3180260Skris#include "namespace.h" 32#include <sys/types.h> 33#include <errno.h> 34#include <pthread.h> 35#include "un-namespace.h" 36 37#include "thr_private.h" 38 39__weak_reference(_pthread_detach, pthread_detach); 40 41int 42_pthread_detach(pthread_t pthread) 43{ 44 struct pthread *curthread = _get_curthread(); 45 int rval; 46 47 if (pthread == NULL) 48 return (EINVAL); 49 50 THREAD_LIST_LOCK(curthread); 51 if ((rval = _thr_find_thread(curthread, pthread, 52 /*include dead*/1)) != 0) { 53 THREAD_LIST_UNLOCK(curthread); 54 return (rval); 55 } 56 57 /* Check if the thread is already detached or has a joiner. */ 58 if ((pthread->tlflags & TLFLAGS_DETACHED) != 0 || 59 (pthread->joiner != NULL)) { 60 THREAD_LIST_UNLOCK(curthread); 61 return (EINVAL); 62 } 63 64 /* Flag the thread as detached. */ 65 pthread->tlflags |= TLFLAGS_DETACHED; 66 if (pthread->state == PS_DEAD) 67 THR_GCLIST_ADD(pthread); 68 THREAD_LIST_UNLOCK(curthread); 69 70 return (0); 71} 72