tests/lib/libc/tls/t_tls_static.c

   1 /*      $NetBSD: t_tls_static.c,v 1.2 2012/01/17 20:34:57 joerg Exp $   */
   2 /*-
   3  * Copyright (c) 2011 The NetBSD Foundation, Inc.
   4  * All rights reserved.
   5  *
   6  * This code is derived from software contributed to The NetBSD Foundation
   7  * by Joerg Sonnenberger.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  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
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  28  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  30  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include <sys/cdefs.h>
  35 __RCSID("$NetBSD: t_tls_static.c,v 1.2 2012/01/17 20:34:57 joerg Exp $");
  36
  37 #include <atf-c.h>
  38 #include <pthread.h>
  39
  40 #include <sys/tls.h>
  41
  42 #ifdef __HAVE_NO___THREAD
  43 #define __thread
  44 #endif
  45
  46 ATF_TC(t_tls_static);
  47
  48 ATF_TC_HEAD(t_tls_static, tc)
  49 {
  50         atf_tc_set_md_var(tc, "descr",
  51             "Test (un)initialized TLS variables in static binaries");
  52 }
  53
  54 void testf_helper(void);
  55
  56 __thread int var1 = 1;
  57 __thread int var2;
  58
  59 static void *
  60 testf(void *dummy)
  61 {
  62         ATF_CHECK_EQ(var1, 1);
  63         ATF_CHECK_EQ(var2, 0);
  64         testf_helper();
  65         ATF_CHECK_EQ(var1, -1);
  66         ATF_CHECK_EQ(var2, -1);
  67
  68         return NULL;
  69 }
  70
  71 ATF_TC_BODY(t_tls_static, tc)
  72 {
  73         pthread_t t;
  74
  75 #ifdef __HAVE_NO___THREAD
  76         atf_tc_skip("no TLS support on this platform");
  77 #endif
  78
  79         testf(NULL);
  80
  81         pthread_create(&t, 0, testf, 0);
  82         pthread_join(t, NULL);
  83
  84         pthread_create(&t, 0, testf, 0);
  85         pthread_join(t, NULL);
  86 }
  87
  88 ATF_TP_ADD_TCS(tp)
  89 {
  90         ATF_TP_ADD_TC(tp, t_tls_static);
  91
  92         return atf_no_error();
  93 }