thr_detach.c revision 212536
190075Sobrien/* 290075Sobrien * Copyright (c) 2005 David Xu <davidxu@freebsd.org> 390075Sobrien * Copyright (C) 2003 Daniel M. Eischen <deischen@freebsd.org> 490075Sobrien * All rights reserved. 590075Sobrien * 690075Sobrien * Redistribution and use in source and binary forms, with or without 790075Sobrien * modification, are permitted provided that the following conditions 890075Sobrien * are met: 990075Sobrien * 1. Redistributions of source code must retain the above copyright 1090075Sobrien * notice unmodified, this list of conditions, and the following 1190075Sobrien * disclaimer. 1290075Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1390075Sobrien * notice, this list of conditions and the following disclaimer in the 1490075Sobrien * documentation and/or other materials provided with the distribution. 1590075Sobrien * 1690075Sobrien * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1790075Sobrien * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1890075Sobrien * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 1990075Sobrien * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2090075Sobrien * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2190075Sobrien * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2290075Sobrien * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2390075Sobrien * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2490075Sobrien * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2590075Sobrien * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2690075Sobrien * 2790075Sobrien * $FreeBSD: head/lib/libthr/thread/thr_detach.c 212536 2010-09-13 07:03:01Z davidxu $ 2890075Sobrien * 2990075Sobrien */ 3090075Sobrien 3190075Sobrien#include "namespace.h" 3290075Sobrien#include <sys/types.h> 3390075Sobrien#include <errno.h> 3490075Sobrien#include <pthread.h> 3590075Sobrien#include "un-namespace.h" 3690075Sobrien 3790075Sobrien#include "thr_private.h" 3890075Sobrien 3990075Sobrien__weak_reference(_pthread_detach, pthread_detach); 4090075Sobrien 4190075Sobrienint 4290075Sobrien_pthread_detach(pthread_t pthread) 4390075Sobrien{ 4490075Sobrien struct pthread *curthread = _get_curthread(); 4590075Sobrien int rval; 4690075Sobrien 4790075Sobrien if (pthread == NULL) 4890075Sobrien return (EINVAL); 4990075Sobrien 5090075Sobrien if ((rval = _thr_find_thread(curthread, pthread, 5190075Sobrien /*include dead*/1)) != 0) { 5290075Sobrien return (rval); 5390075Sobrien } 5490075Sobrien 5590075Sobrien /* Check if the thread is already detached or has a joiner. */ 5690075Sobrien if ((pthread->flags & THR_FLAGS_DETACHED) != 0 || 5790075Sobrien (pthread->joiner != NULL)) { 5890075Sobrien THR_THREAD_UNLOCK(curthread, pthread); 5990075Sobrien return (EINVAL); 6090075Sobrien } 6190075Sobrien 6290075Sobrien /* Flag the thread as detached. */ 6390075Sobrien pthread->flags |= THR_FLAGS_DETACHED; 6490075Sobrien _thr_try_gc(curthread, pthread); /* thread lock released */ 6590075Sobrien 6690075Sobrien return (0); 6790075Sobrien} 6890075Sobrien