cpukit/libstdthreads/tss.c

0001 /*-
0002  * Copyright (c) 2011 Ed Schouten <ed@FreeBSD.org>
0003  * All rights reserved.
0004  *
0005  * Redistribution and use in source and binary forms, with or without
0006  * modification, are permitted provided that the following conditions
0007  * are met:
0008  * 1. Redistributions of source code must retain the above copyright
0009  *    notice, this list of conditions and the following disclaimer.
0010  * 2. Redistributions in binary form must reproduce the above copyright
0011  *    notice, this list of conditions and the following disclaimer in the
0012  *    documentation and/or other materials provided with the distribution.
0013  *
0014  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
0015  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0016  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0017  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
0018  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
0019  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
0020  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
0021  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
0022  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
0023  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
0024  * SUCH DAMAGE.
0025  *
0026  * $FreeBSD r228904 2011-12-26T21:51:53Z$
0027  */
0028
0029 #include <threads.h>
0030 #include <limits.h>
0031 #include <pthread.h>
0032
0033 int
0034 tss_create(tss_t *key, tss_dtor_t dtor)
0035 {
0036
0037     if (pthread_key_create(key, dtor) != 0)
0038         return (thrd_error);
0039     return (thrd_success);
0040 }
0041
0042 void
0043 tss_delete(tss_t key)
0044 {
0045
0046     (void)pthread_key_delete(key);
0047 }
0048
0049 void *
0050 tss_get(tss_t key)
0051 {
0052
0053     return (pthread_getspecific(key));
0054 }
0055
0056 int
0057 tss_set(tss_t key, void *val)
0058 {
0059
0060     if (pthread_setspecific(key, val) != 0)
0061         return (thrd_error);
0062     return (thrd_success);
0063 }
0064
0065 _Static_assert(TSS_DTOR_ITERATIONS == PTHREAD_DESTRUCTOR_ITERATIONS,
0066     "TSS_DTOR_ITERATIONS must be identical to PTHREAD_DESTRUCTOR_ITERATIONS");