sortix--sortix/libc/pthread/pthread_detach.c

/*
 * Copyright (c) 2014 Jonas 'Sortie' Termansen.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * pthread/pthread_detach.c
 * Detach a thread.
 */

#include <assert.h>
#include <pthread.h>

int pthread_detach(pthread_t thread)
{
	if ( pthread_mutex_trylock(&thread->detach_lock) != 0 )
		return pthread_join(thread, NULL);
	assert(thread->detach_state == PTHREAD_CREATE_JOINABLE);
	thread->detach_state = PTHREAD_CREATE_DETACHED;
	pthread_mutex_unlock(&thread->detach_lock);
	return 0;
}