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/* libguestfs
* Copyright (C) 2015-2020 Red Hat 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* Test that we can make API calls safely from multiple threads. */
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>
#include <pthread.h>
#include "guestfs.h"
#include "guestfs-utils.h"
static guestfs_h *g;
#define RUN_TIME 60 /* seconds */
#define NR_CONCURRENT_THREADS 4
static void *start_thread (void *nullv);
int
main (int argc, char *argv[])
{
time_t start_t, t;
pthread_t threads[NR_CONCURRENT_THREADS];
void *ret;
int i, r;
/* Because we rely on error message content below, force LC_ALL=C. */
setenv ("LC_ALL", "C", 1);
g = guestfs_create ();
if (!g) {
perror ("guestfs_create");
exit (EXIT_FAILURE);
}
time (&start_t);
while (time (&t), t - start_t < RUN_TIME) {
for (i = 0; i < NR_CONCURRENT_THREADS; ++i) {
r = pthread_create (&threads[i], NULL, start_thread, NULL);
if (r != 0) {
fprintf (stderr, "pthread_create: %s\n", strerror (r));
exit (EXIT_FAILURE);
}
}
for (i = 0; i < NR_CONCURRENT_THREADS; ++i) {
r = pthread_join (threads[i], &ret);
if (r != 0) {
fprintf (stderr, "pthread_join: %s\n", strerror (r));
exit (EXIT_FAILURE);
}
if (ret != NULL) {
fprintf (stderr, "thread[%d] failed\n", i);
exit (EXIT_FAILURE);
}
}
}
guestfs_close (g);
exit (EXIT_SUCCESS);
}
static void *
start_thread (void *nullv)
{
char *p;
const char *err;
int iterations;
for (iterations = 0; iterations < 1000; ++iterations) {
guestfs_set_hv (g, "test");
p = guestfs_get_hv (g);
if (!p || STRNEQ (p, "test")) {
fprintf (stderr, "invalid return from guestfs_get_hv\n");
pthread_exit ((void *)-1);
}
free (p);
guestfs_push_error_handler (g, NULL, NULL);
guestfs_set_hv (g, "test");
p = guestfs_get_hv (g);
guestfs_pop_error_handler (g);
if (!p || STRNEQ (p, "test")) {
fprintf (stderr, "invalid return from guestfs_get_hv\n");
pthread_exit ((void *)-1);
}
free (p);
guestfs_push_error_handler (g, NULL, NULL);
guestfs_set_program (g, NULL); /* deliberately cause an error */
guestfs_pop_error_handler (g);
err = guestfs_last_error (g);
if (!err || !STRPREFIX (err, "set_program: program: ")) {
fprintf (stderr, "invalid error message: %s\n", err ? err : "NULL");
pthread_exit ((void *)-1);
}
guestfs_push_error_handler (g, NULL, NULL);
guestfs_set_memsize (g, 1); /* deliberately cause an error */
guestfs_pop_error_handler (g);
err = guestfs_last_error (g);
if (!err || strstr (err, "memsize") == NULL) {
fprintf (stderr, "invalid error message: %s\n", err ? err : "NULL");
pthread_exit ((void *)-1);
}
}
pthread_exit (NULL);
}
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