glibc/rt/tst-mqueue8.c

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/* Copyright (C) 2004-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
The GNU C Library 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.
The GNU C Library 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 the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <mqueue.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#if _POSIX_THREADS
# include <pthread.h>
static pthread_barrier_t b;
/* Cleanup handling test. */
static int cl_called;
static void
cl (void *arg)
{
++cl_called;
}
#define TF_MQ_RECEIVE 0L
#define TF_MQ_TIMEDRECEIVE 1L
#define TF_MQ_SEND 2L
#define TF_MQ_TIMEDSEND 3L
static const char *names[]
= { "mq_receive", "mq_timedreceive", "mq_send", "mq_timedsend" };
static mqd_t q;
static struct timespec never;
static void *
tf (void *arg)
{
int r = pthread_barrier_wait (&b);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("tf: barrier_wait failed");
exit (1);
}
pthread_cleanup_push (cl, NULL);
char c = ' ';
switch ((long) arg)
{
case TF_MQ_SEND:
TEMP_FAILURE_RETRY (mq_send (q, &c, 1, 1));
break;
case TF_MQ_TIMEDSEND:
TEMP_FAILURE_RETRY (mq_timedsend (q, &c, 1, 1, &never));
break;
case TF_MQ_RECEIVE:
TEMP_FAILURE_RETRY (mq_receive (q, &c, 1, NULL));
break;
case TF_MQ_TIMEDRECEIVE:
TEMP_FAILURE_RETRY (mq_timedreceive (q, &c, 1, NULL, &never));
break;
}
pthread_cleanup_pop (0);
printf ("tf: %s returned\n", names[(long) arg]);
exit (1);
}
#define TEST_FUNCTION do_test ()
static int
do_test (void)
{
char name[sizeof "/tst-mqueue8-" + sizeof (pid_t) * 3];
snprintf (name, sizeof (name), "/tst-mqueue8-%u", getpid ());
struct mq_attr attr = { .mq_maxmsg = 1, .mq_msgsize = 1 };
q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
if (q == (mqd_t) -1)
{
printf ("mq_open failed with: %m\n");
return 0;
}
if (mq_unlink (name) != 0)
{
printf ("mq_unlink failed with: %m\n");
return 1;
}
if (pthread_barrier_init (&b, NULL, 2) != 0)
{
puts ("barrier_init failed");
return 1;
}
if (clock_gettime (CLOCK_REALTIME, &never) == 0)
never.tv_sec += 100;
else
{
never.tv_sec = time (NULL) + 100;
never.tv_nsec = 0;
}
int result = 0;
for (long l = TF_MQ_RECEIVE; l <= TF_MQ_TIMEDSEND; ++l)
{
cl_called = 0;
pthread_t th;
if (pthread_create (&th, NULL, tf, (void *) l) != 0)
{
printf ("1st %s create failed\n", names[l]);
result = 1;
continue;
}
int r = pthread_barrier_wait (&b);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("barrier_wait failed");
result = 1;
continue;
}
struct timespec ts = { .tv_sec = 0, .tv_nsec = 100000000 };
while (nanosleep (&ts, &ts) != 0)
continue;
printf ("going to cancel %s in-time\n", names[l]);
if (pthread_cancel (th) != 0)
{
printf ("1st cancel of %s failed\n", names[l]);
result = 1;
continue;
}
void *status;
if (pthread_join (th, &status) != 0)
{
printf ("1st join of %s failed\n", names[l]);
result = 1;
continue;
}
if (status != PTHREAD_CANCELED)
{
printf ("1st %s thread not canceled\n", names[l]);
result = 1;
continue;
}
if (cl_called == 0)
{
printf ("%s cleanup handler not called\n", names[l]);
result = 1;
continue;
}
if (cl_called > 1)
{
printf ("%s cleanup handler called more than once\n", names[l]);
result = 1;
continue;
}
printf ("in-time %s cancellation succeeded\n", names[l]);
cl_called = 0;
if (pthread_create (&th, NULL, tf, (void *) l) != 0)
{
printf ("2nd %s create failed\n", names[l]);
result = 1;
continue;
}
printf ("going to cancel %s early\n", names[l]);
if (pthread_cancel (th) != 0)
{
printf ("2nd cancel of %s failed\n", names[l]);
result = 1;
continue;
}
r = pthread_barrier_wait (&b);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("barrier_wait failed");
result = 1;
continue;
}
if (pthread_join (th, &status) != 0)
{
printf ("2nd join of %s failed\n", names[l]);
result = 1;
continue;
}
if (status != PTHREAD_CANCELED)
{
printf ("2nd %s thread not canceled\n", names[l]);
result = 1;
continue;
}
if (cl_called == 0)
{
printf ("%s cleanup handler not called\n", names[l]);
result = 1;
continue;
}
if (cl_called > 1)
{
printf ("%s cleanup handler called more than once\n", names[l]);
result = 1;
continue;
}
printf ("early %s cancellation succeeded\n", names[l]);
if (l == TF_MQ_TIMEDRECEIVE)
{
/* mq_receive and mq_timedreceive are tested on empty mq.
For mq_send and mq_timedsend we need to make it full.
If this fails, there is no point in doing further testing. */
char c = ' ';
if (mq_send (q, &c, 1, 1) != 0)
{
printf ("mq_send failed: %m\n");
result = 1;
break;
}
}
}
if (mq_close (q) != 0)
{
printf ("mq_close failed: %m\n");
result = 1;
}
return result;
}
#else
# define TEST_FUNCTION 0
#endif
#include "../test-skeleton.c"