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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <errno.h>
#include <pthread.h>
#include "pthread_accessor.h"
int pthread_detach(pthread_t t) {
{
pthread_accessor thread(t);
if (thread.get() == NULL) {
return ESRCH;
}
if (thread->attr.flags & PTHREAD_ATTR_FLAG_DETACHED) {
return EINVAL; // Already detached.
}
if (thread->attr.flags & PTHREAD_ATTR_FLAG_JOINED) {
return 0; // Already being joined; silently do nothing, like glibc.
}
// If the thread has not exited, we can detach it safely.
if ((thread->attr.flags & PTHREAD_ATTR_FLAG_ZOMBIE) == 0) {
thread->attr.flags |= PTHREAD_ATTR_FLAG_DETACHED;
return 0;
}
}
// The thread is in zombie state, use pthread_join to clean it up.
return pthread_join(t, NULL);
}
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