tests/lib/libc/tls/t_tls_dlopen.c

   1 /*      $NetBSD: t_tls_dlopen.c,v 1.3 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_dlopen.c,v 1.3 2012/01/17 20:34:57 joerg Exp $");
  36
  37 #include <atf-c.h>
  38 #include <dlfcn.h>
  39 #include <pthread.h>
  40 #include <unistd.h>
  41
  42 #include <sys/tls.h>
  43
  44 #ifdef __HAVE_NO___THREAD
  45 #define __thread
  46 #endif
  47
  48 ATF_TC(t_tls_dlopen);
  49
  50 ATF_TC_HEAD(t_tls_dlopen, tc)
  51 {
  52         atf_tc_set_md_var(tc, "descr",
  53             "Test (un)initialized TLS variables and dlopen");
  54 }
  55
  56 void (*testf_helper)(int, int);
  57
  58 __thread int var1 = 1;
  59 __thread int var2;
  60 __thread int *var3 = &optind;
  61 int var4_helper;
  62 __thread int *var4 = &var4_helper;
  63
  64 static void *
  65 testf(void *dummy)
  66 {
  67         ATF_CHECK_EQ(var1, 1);
  68         ATF_CHECK_EQ(var2, 0);
  69         ATF_CHECK_EQ(var3, &optind);
  70         ATF_CHECK_EQ(var4, &var4_helper);
  71         testf_helper(2, 2);
  72         ATF_CHECK_EQ(var1, 2);
  73         ATF_CHECK_EQ(var2, 2);
  74         testf_helper(3, 3);
  75         ATF_CHECK_EQ(var1, 3);
  76         ATF_CHECK_EQ(var2, 3);
  77         ATF_CHECK_EQ(var3, &optind);
  78
  79         return NULL;
  80 }
  81
  82 ATF_TC_BODY(t_tls_dlopen, tc)
  83 {
  84         void *handle;
  85         pthread_t t;
  86
  87 #ifdef __HAVE_NO___THREAD
  88         atf_tc_skip("no TLS support on this platform");
  89 #endif
  90
  91         handle = dlopen("h_tls_dlopen.so", RTLD_NOW | RTLD_LOCAL);
  92         ATF_REQUIRE(handle != NULL);
  93
  94         testf_helper = dlsym(handle, "testf_dso_helper");
  95         ATF_REQUIRE(testf_helper != NULL);
  96
  97         testf(NULL);
  98
  99         pthread_create(&t, 0, testf, 0);
 100         pthread_join(t, NULL);
 101
 102         pthread_create(&t, 0, testf, 0);
 103         pthread_join(t, NULL);
 104
 105         dlclose(handle);
 106 }
 107
 108 ATF_TP_ADD_TCS(tp)
 109 {
 110         ATF_TP_ADD_TC(tp, t_tls_dlopen);
 111
 112         return atf_no_error();
 113 }