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/* t-thread-local.c - Check the thread local storage
* Copyright (C) 2024 g10 Code GmbH
*
* This file is part of Libgcrypt.
*
* Libgcrypt is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Libgcrypt 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <https://www.gnu.org/licenses/>.
* SPDX-License-Identifier: LGPL-2.1+
*/
/* For now, this program simply test __thread storage class specifier.
* After we implement thread local context for libgcrypt, we will
* modity to test the feature. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#if HAVE_PTHREAD
# include <pthread.h>
#endif
#define PGM "t-thread-local"
#include "t-common.h"
#include "../src/gcrypt-testapi.h"
/* Mingw requires us to include windows.h after winsock2.h which is
included by gcrypt.h. */
#ifdef _WIN32
# include <windows.h>
#endif
#ifdef _WIN32
# define THREAD_RET_TYPE DWORD WINAPI
# define THREAD_RET_VALUE 0
#else
# define THREAD_RET_TYPE void *
# define THREAD_RET_VALUE NULL
#endif
#define N_TESTS 1
#define N_THREADS 19
static __thread unsigned long t;
struct thread_arg_s
{
int no;
};
#if defined(HAVE_PTHREAD) || defined(_WIN32)
/* Checking the local storage thread. */
static THREAD_RET_TYPE
check_ls_thread (void *argarg)
{
struct thread_arg_s *arg = argarg;
t = arg->no;
info ("a thread update the local storage: %lu", t);
gcry_free (arg);
return THREAD_RET_VALUE;
}
#endif
static void
check_thread_local (void)
{
struct thread_arg_s *arg;
#ifdef _WIN32
HANDLE threads[N_THREADS];
int i;
int rc;
t = N_THREADS;
for (i=0; i < N_THREADS; i++)
{
arg = gcry_xmalloc (sizeof *arg);
arg->no = i;
threads[i] = CreateThread (NULL, 0, check_ls_thread, arg, 0, NULL);
if (!threads[i])
die ("error creating a thread %d: rc=%d",
i, (int)GetLastError ());
}
for (i=0; i < N_THREADS; i++)
{
rc = WaitForSingleObject (threads[i], INFINITE);
if (rc == WAIT_OBJECT_0)
info ("a thread %d has terminated", i);
else
fail ("waiting for a thread %d failed: %d",
i, (int)GetLastError ());
CloseHandle (threads[i]);
}
#elif HAVE_PTHREAD
pthread_t threads[N_THREADS];
int rc, i;
t = N_THREADS;
for (i=0; i < N_THREADS; i++)
{
arg = gcry_xmalloc (sizeof *arg);
arg->no = i;
pthread_create (&threads[i], NULL, check_ls_thread, arg);
}
for (i=0; i < N_THREADS; i++)
{
rc = pthread_join (threads[i], NULL);
if (rc)
fail ("pthread_join failed for a thread %d: %s",
i, strerror (errno));
else
info ("a thread %d has terminated", i);
}
#else
(void)arg;
#endif /*!_WIN32*/
if (t != N_THREADS)
fail ("failed t=%lu\n", t);
else
info ("success");
}
int
main (int argc, char **argv)
{
int last_argc = -1;
if (argc)
{ argc--; argv++; }
while (argc && last_argc != argc)
{
last_argc = argc;
if (!strcmp (*argv, "--"))
{
argc--; argv++;
break;
}
else if (!strcmp (*argv, "--help"))
{
fputs ("usage: " PGM " [options]\n"
"Options:\n"
" --verbose print timings etc.\n"
" --debug flyswatter\n",
stdout);
exit (0);
}
else if (!strcmp (*argv, "--verbose"))
{
verbose++;
argc--; argv++;
}
else if (!strcmp (*argv, "--debug"))
{
verbose += 2;
debug++;
argc--; argv++;
}
else if (!strncmp (*argv, "--", 2))
die ("unknown option '%s'", *argv);
}
xgcry_control ((GCRYCTL_DISABLE_SECMEM, 0));
if (!gcry_check_version (GCRYPT_VERSION))
die ("version mismatch\n");
if (debug)
xgcry_control ((GCRYCTL_SET_DEBUG_FLAGS, 1u , 0));
xgcry_control ((GCRYCTL_ENABLE_QUICK_RANDOM, 0));
xgcry_control ((GCRYCTL_INITIALIZATION_FINISHED, 0));
check_thread_local ();
return !!error_count;
}
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