19d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes/* 29d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * Copyright (C) 2008 The Android Open Source Project 39d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * All rights reserved. 49d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * 59d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * Redistribution and use in source and binary forms, with or without 69d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * modification, are permitted provided that the following conditions 79d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * are met: 89d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * * Redistributions of source code must retain the above copyright 99d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * notice, this list of conditions and the following disclaimer. 109d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * * Redistributions in binary form must reproduce the above copyright 119d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * notice, this list of conditions and the following disclaimer in 129d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * the documentation and/or other materials provided with the 139d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * distribution. 149d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * 159d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 169d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 179d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 189d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 199d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 209d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 219d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 229d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 239d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 249d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 259d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 269d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes * SUCH DAMAGE. 279d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes */ 289d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes 299d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes#include <errno.h> 3019e246dda6772ffc532b1762cd7870d6c3b01c12Yabin Cui#include <pthread.h> 319d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes 32673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui#include "pthread_internal.h" 339d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes 349d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughesint pthread_detach(pthread_t t) { 35673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui pthread_internal_t* thread = __pthread_internal_find(t); 36673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui if (thread == NULL) { 37673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui return ESRCH; 38673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui } 399d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes 40673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui ThreadJoinState old_state = THREAD_NOT_JOINED; 41673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui while (old_state == THREAD_NOT_JOINED && 42673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui !atomic_compare_exchange_weak(&thread->join_state, &old_state, THREAD_DETACHED)) { 4304620a3cd7bdea0d1b421c8772ba3f06839bbe9cElliott Hughes } 4404620a3cd7bdea0d1b421c8772ba3f06839bbe9cElliott Hughes 45673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui if (old_state == THREAD_NOT_JOINED) { 46673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui return 0; 47673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui } else if (old_state == THREAD_EXITED_NOT_JOINED) { 48673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui // Use pthread_join to clean it up. 49673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui return pthread_join(t, NULL); 50673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui } 51673b15e4ee2c6d99b150aedddc0f389e29f98e1bYabin Cui return EINVAL; 529d23e04c43dbb8480bea8be28b8a2f37423bec49Elliott Hughes} 53