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/* Copyright (C) 2003-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/wait.h>
static pthread_barrier_t b2;
static int fd;
static int called;
static void
cl (void *arg)
{
called = 1;
}
static void *
tf (void *arg)
{
int r = pthread_barrier_wait (&b2);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("child thread: barrier_wait failed");
exit (1);
}
pthread_cleanup_push (cl, NULL);
/* This call should never return. */
(void) lockf (fd, F_LOCK, 0);
pthread_cleanup_pop (0);
return NULL;
}
static int
do_test (void)
{
char fname[] = "/tmp/cancel16XXXXXX";
fd = mkstemp (fname);
if (fd == -1)
{
puts ("mkstemp failed");
return 1;
}
unlink (fname);
char mem[sizeof (pthread_barrier_t)];
memset (mem, '\0', sizeof (mem));
if (TEMP_FAILURE_RETRY (pwrite (fd, mem, sizeof (mem), 0)) != sizeof (mem))
{
puts ("pwrite failed");
return 1;
}
void *p = mmap (NULL, sizeof (mem), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (p == MAP_FAILED)
{
puts ("mmap failed");
return 1;
}
pthread_barrier_t *b = (pthread_barrier_t *) p;
pthread_barrierattr_t ba;
if (pthread_barrierattr_init (&ba) != 0)
{
puts ("barrierattr_init failed");
return 1;
}
if (pthread_barrierattr_setpshared (&ba, 1) != 0)
{
puts ("barrierattr_setshared failed");
return 1;
}
if (pthread_barrier_init (b, &ba, 2) != 0)
{
puts ("1st barrier_init failed");
return 1;
}
if (pthread_barrierattr_destroy (&ba) != 0)
{
puts ("barrier_destroy failed");
return 1;
}
pid_t pid = fork ();
if (pid == 0)
{
/* Child. Lock the file and wait. */
if (lockf (fd, F_LOCK, 0) != 0)
{
puts ("child process: lockf failed");
_exit (1);
}
int r = pthread_barrier_wait (b);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("child process: 1st barrier_wait failed");
_exit (1);
}
/* Make sure the process dies. */
alarm (5);
r = pthread_barrier_wait (b);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("child process: 2nd barrier_wait failed");
_exit (1);
}
_exit (0);
}
if (pid == -1)
{
puts ("fork failed");
return 1;
}
int r = pthread_barrier_wait (b);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("main: 1st barrier_wait failed");
_exit (1);
}
if (pthread_barrier_init (&b2, NULL, 2) != 0)
{
puts ("2nd barrier_init failed");
return 1;
}
pthread_t th;
if (pthread_create (&th, NULL, tf, NULL) != 0)
{
puts ("create failed");
return 1;
}
r = pthread_barrier_wait (&b2);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("main: 2nd barrier_wait failed");
return 1;
}
/* Delay. */
sleep (1);
if (pthread_cancel (th) != 0)
{
puts ("cancel failed");
return 1;
}
void *result;
if (pthread_join (th, &result) != 0)
{
puts ("join failed");
return 1;
}
if (result != PTHREAD_CANCELED)
{
puts ("thread not canceled");
return 1;
}
if (called == 0)
{
puts ("cleanup handler not called");
return 1;
}
r = pthread_barrier_wait (b);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("main: 3rd barrier_wait failed");
return 1;
}
int status;
if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
{
puts ("waitpid failed");
return 1;
}
if (WEXITSTATUS (status) != 0)
{
printf ("child process exits with %d\n", WEXITSTATUS (status));
return 1;
}
if (lockf (fd, F_LOCK, 0) != 0)
{
puts ("main: lockf failed");
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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