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/* Multithread-safety test for setlocale_null_r (LC_ALL, ...).
Copyright (C) 2019-2024 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2019. */
#include <config.h>
/* Work around GCC bug 44511. */
#if _GL_GNUC_PREREQ (4, 3)
# pragma GCC diagnostic ignored "-Wreturn-type"
#endif
#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
/* Specification. */
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "glthread/thread.h"
/* We want to use the system's setlocale() function here, not the gnulib
override. */
#undef setlocale
/* Some common locale names. */
#if defined _WIN32 && !defined __CYGWIN__
# define ENGLISH "English_United States"
# define GERMAN "German_Germany"
# define FRENCH "French_France"
# define ENCODING ".1252"
#else
# define ENGLISH "en_US"
# define GERMAN "de_DE"
# define FRENCH "fr_FR"
# if defined __sgi
# define ENCODING ".ISO8859-15"
# elif defined __hpux
# define ENCODING ".utf8"
# else
# define ENCODING ".UTF-8"
# endif
#endif
static const char LOCALE1[] = ENGLISH ENCODING;
static const char LOCALE2[] = GERMAN ENCODING;
static const char LOCALE3[] = FRENCH ENCODING;
static char *expected;
static void *
thread1_func (void *arg)
{
for (;;)
{
char buf[SETLOCALE_NULL_ALL_MAX];
if (setlocale_null_r (LC_ALL, buf, sizeof (buf)))
abort ();
if (strcmp (expected, buf) != 0)
{
fprintf (stderr, "thread1 disturbed by thread2!\n"); fflush (stderr);
abort ();
}
}
/*NOTREACHED*/
}
static void *
thread2_func (void *arg)
{
for (;;)
{
char buf[SETLOCALE_NULL_ALL_MAX];
setlocale_null_r (LC_NUMERIC, buf, sizeof (buf));
setlocale_null_r (LC_ALL, buf, sizeof (buf));
}
/*NOTREACHED*/
}
int
main (int argc, char *argv[])
{
if (setlocale (LC_ALL, LOCALE1) == NULL)
{
fprintf (stderr, "Skipping test: LOCALE1 not recognized\n");
return 77;
}
if (setlocale (LC_NUMERIC, LOCALE2) == NULL)
{
fprintf (stderr, "Skipping test: LOCALE2 not recognized\n");
return 77;
}
if (setlocale (LC_TIME, LOCALE3) == NULL)
{
fprintf (stderr, "Skipping test: LOCALE3 not recognized\n");
return 77;
}
expected = strdup (setlocale (LC_ALL, NULL));
/* Create the two threads. */
gl_thread_create (thread1_func, NULL);
gl_thread_create (thread2_func, NULL);
/* Let them run for 5 seconds. */
{
struct timespec duration;
duration.tv_sec = 5;
duration.tv_nsec = 0;
nanosleep (&duration, NULL);
}
return 0;
}
#else
/* No multithreading available. */
#include <stdio.h>
int
main ()
{
fputs ("Skipping test: multithreading not enabled\n", stderr);
return 77;
}
#endif
/* Without locking, the results of this test would be:
glibc OK
musl libc crash < 10 sec
macOS crash < 1 sec
FreeBSD crash < 1 sec
NetBSD crash < 2 sec
OpenBSD crash < 1 sec
AIX crash < 2 sec
HP-UX OK
IRIX OK
Solaris 10 OK
Solaris 11.0 OK
Solaris 11.4 OK
Solaris OpenIndiana OK
Haiku crash < 1 sec
Cygwin < 3.4.6 crash < 1 sec
mingw OK
MSVC OK (assuming compiler option /MD !)
*/
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