glibc/sysdeps/pthread/tst-cancel16.c

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/* Copyright (C) 2003-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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
Prefer https to http for gnu.org and fsf.org URLs Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
<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"