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      1 /*	$NetBSD: tss.c,v 1.2 2019/12/15 22:32:29 uwe Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2016 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Kamil Rytarowski.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __RCSID("$NetBSD: tss.c,v 1.2 2019/12/15 22:32:29 uwe Exp $");
     34 
     35 #include <assert.h>
     36 #include <errno.h>
     37 #include <pthread.h>
     38 #include <threads.h>
     39 
     40 int
     41 tss_create(tss_t *key, tss_dtor_t dtor)
     42 {
     43 
     44 	_DIAGASSERT(key != NULL);
     45 
     46 	if (pthread_key_create(key, dtor) == 0)
     47 		return thrd_success;
     48 
     49 	return thrd_error;
     50 }
     51 
     52 void
     53 tss_delete(tss_t key)
     54 {
     55 
     56 	/*
     57 	 * The tss_delete(3) function that conforms to C11 returns no value.
     58 	 */
     59 	(void)pthread_key_delete(key);
     60 }
     61 
     62 void *
     63 tss_get(tss_t key)
     64 {
     65 
     66 	return pthread_getspecific(key);
     67 }
     68 
     69 int
     70 tss_set(tss_t key, void *val)
     71 {
     72 
     73 	if (pthread_setspecific(key, val) == 0)
     74 		return thrd_success;
     75 
     76 	return thrd_error;
     77 }
     78