| 1 | /* Multithread-safety test for setlocale_null_r (LC_xxx, ...).
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| 2 | Copyright (C) 2019-2021 Free Software Foundation, Inc.
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| 3 |
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| 4 | This program is free software: you can redistribute it and/or modify
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| 5 | it under the terms of the GNU General Public License as published by
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| 6 | the Free Software Foundation; either version 3 of the License, or
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| 7 | (at your option) any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License
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| 15 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
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| 16 |
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| 17 | /* Written by Bruno Haible <bruno@clisp.org>, 2019. */
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| 18 |
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| 19 | #include <config.h>
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| 20 |
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| 21 | /* Work around GCC bug 44511. */
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| 22 | #if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
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| 23 | # pragma GCC diagnostic ignored "-Wreturn-type"
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| 24 | #endif
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| 25 |
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| 26 | #if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
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| 27 |
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| 28 | /* Specification. */
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| 29 | #include <locale.h>
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| 30 |
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| 31 | #include <stdio.h>
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| 32 | #include <stdlib.h>
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| 33 | #include <string.h>
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| 34 | #include <time.h>
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| 35 |
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| 36 | #include "glthread/thread.h"
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| 37 |
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| 38 | /* We want to use the system's setlocale() function here, not the gnulib
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| 39 | override. */
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| 40 | #undef setlocale
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| 41 |
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| 42 |
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| 43 | /* Some common locale names. */
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| 44 |
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| 45 | #if defined _WIN32 && !defined __CYGWIN__
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| 46 | # define ENGLISH "English_United States"
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| 47 | # define GERMAN "German_Germany"
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| 48 | # define FRENCH "French_France"
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| 49 | # define ENCODING ".1252"
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| 50 | #else
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| 51 | # define ENGLISH "en_US"
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| 52 | # define GERMAN "de_DE"
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| 53 | # define FRENCH "fr_FR"
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| 54 | # if defined __sgi
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| 55 | # define ENCODING ".ISO8859-15"
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| 56 | # elif defined __hpux
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| 57 | # define ENCODING ".utf8"
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| 58 | # else
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| 59 | # define ENCODING ".UTF-8"
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| 60 | # endif
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| 61 | #endif
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| 62 |
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| 63 | static const char LOCALE1[] = ENGLISH ENCODING;
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| 64 | static const char LOCALE2[] = GERMAN ENCODING;
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| 65 | static const char LOCALE3[] = FRENCH ENCODING;
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| 66 |
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| 67 | static char *expected;
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| 68 |
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| 69 | static void *
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| 70 | thread1_func (void *arg)
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| 71 | {
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| 72 | for (;;)
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| 73 | {
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| 74 | char buf[SETLOCALE_NULL_MAX];
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| 75 |
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| 76 | if (setlocale_null_r (LC_NUMERIC, buf, sizeof (buf)))
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| 77 | abort ();
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| 78 | if (strcmp (expected, buf) != 0)
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| 79 | {
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| 80 | fprintf (stderr, "thread1 disturbed by thread2!\n"); fflush (stderr);
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| 81 | abort ();
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| 82 | }
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| 83 | }
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| 84 |
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| 85 | /*NOTREACHED*/
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| 86 | }
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| 87 |
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| 88 | static void *
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| 89 | thread2_func (void *arg)
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| 90 | {
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| 91 | for (;;)
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| 92 | {
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| 93 | char buf[SETLOCALE_NULL_MAX];
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| 94 |
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| 95 | setlocale_null_r (LC_NUMERIC, buf, sizeof (buf));
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| 96 | setlocale_null_r (LC_TIME, buf, sizeof (buf));
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| 97 | }
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| 98 |
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| 99 | /*NOTREACHED*/
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| 100 | }
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| 101 |
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| 102 | int
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| 103 | main (int argc, char *argv[])
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| 104 | {
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| 105 | if (setlocale (LC_ALL, LOCALE1) == NULL)
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| 106 | {
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| 107 | fprintf (stderr, "Skipping test: LOCALE1 not recognized\n");
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| 108 | return 77;
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| 109 | }
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| 110 | if (setlocale (LC_NUMERIC, LOCALE2) == NULL)
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| 111 | {
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| 112 | fprintf (stderr, "Skipping test: LOCALE2 not recognized\n");
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| 113 | return 77;
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| 114 | }
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| 115 | if (setlocale (LC_TIME, LOCALE3) == NULL)
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| 116 | {
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| 117 | fprintf (stderr, "Skipping test: LOCALE3 not recognized\n");
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| 118 | return 77;
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| 119 | }
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| 120 |
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| 121 | expected = strdup (setlocale (LC_NUMERIC, NULL));
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| 122 |
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| 123 | /* Create the two threads. */
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| 124 | gl_thread_create (thread1_func, NULL);
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| 125 | gl_thread_create (thread2_func, NULL);
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| 126 |
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| 127 | /* Let them run for 2 seconds. */
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| 128 | {
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| 129 | struct timespec duration;
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| 130 | duration.tv_sec = 2;
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| 131 | duration.tv_nsec = 0;
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| 132 |
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| 133 | nanosleep (&duration, NULL);
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| 134 | }
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| 135 |
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| 136 | return 0;
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| 137 | }
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| 138 |
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| 139 | #else
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| 140 |
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| 141 | /* No multithreading available. */
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| 142 |
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| 143 | #include <stdio.h>
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| 144 |
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| 145 | int
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| 146 | main ()
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| 147 | {
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| 148 | fputs ("Skipping test: multithreading not enabled\n", stderr);
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| 149 | return 77;
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| 150 | }
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| 151 |
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| 152 | #endif
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| 153 |
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| 154 | /* Without locking, the results of this test would be:
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| 155 | glibc OK
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| 156 | musl libc OK
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| 157 | macOS OK
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| 158 | FreeBSD OK
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| 159 | NetBSD OK
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| 160 | OpenBSD crash < 1 sec
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| 161 | AIX crash < 2 sec
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| 162 | HP-UX OK
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| 163 | IRIX OK
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| 164 | Solaris 10 OK
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| 165 | Solaris 11.0 OK
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| 166 | Solaris 11.4 OK
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| 167 | Solaris OpenIndiana OK
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| 168 | Haiku OK
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| 169 | Cygwin OK
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| 170 | mingw OK
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| 171 | MSVC OK (assuming compiler option /MD !)
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| 172 | */
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