mirror of
https://sourceware.org/git/glibc.git
synced 2024-10-01 03:27:48 +00:00
595538976b
2000-11-20 Jakub Jelinek <jakub@redhat.com> * iconvdata/bug-iconv2.c (main): Use %zd in format string. * io/test-lfs.c (do_test): Cast statbuf.st_size to long long. * malloc/tst-valloc.c (main): Cast valloc return value to long. * malloc/tst-obstack.c (verbose_malloc): Use %zd in format string. * math/test-fpucw.c (main): Use %lx in format string, cast control words to long. * stdio-common/tst-fmemopen.c (main): Use %td in format strings. * stdlib/tst-strtol.c (tests): Avoid (bogus?) decimal constant is so large that it is unsigned warning. * sysdeps/unix/sysv/linux/sparc/bits/types.h (__ssize_t): Changing it to long on sparc64. 2000-11-20 Andreas Jaeger <aj@suse.de> * nscd/nscd.h (termination_handler): Add noreturn attribute. (receiv_print_stats): Likewise. * elf/ldconfig.c (path_hwcap): Cast -1 for proper comparison.
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/* Tests for fork in multi-threaded environment.
|
|
Copyright (C) 2000 Free Software Foundation, Inc.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <errno.h>
|
|
#include <error.h>
|
|
#include <stdlib.h>
|
|
#include <pthread.h>
|
|
#include <unistd.h>
|
|
#include <sys/wait.h>
|
|
|
|
enum
|
|
{
|
|
PREPARE_BIT = 1,
|
|
PARENT_BIT = 2,
|
|
CHILD_BIT = 4
|
|
};
|
|
|
|
static int var;
|
|
|
|
static void
|
|
prepare (void)
|
|
{
|
|
var |= PREPARE_BIT;
|
|
}
|
|
|
|
static void
|
|
parent (void)
|
|
{
|
|
var |= PARENT_BIT;
|
|
}
|
|
|
|
static void
|
|
child (void)
|
|
{
|
|
var |= CHILD_BIT;
|
|
}
|
|
|
|
|
|
static void *thread (void *arg);
|
|
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
pthread_t th;
|
|
void *res;
|
|
|
|
pthread_atfork (prepare, parent, child);
|
|
|
|
if (pthread_create (&th, NULL, thread, NULL) != 0)
|
|
error (EXIT_FAILURE, 0, "cannot create thread");
|
|
|
|
pthread_join (th, &res);
|
|
|
|
return (int) (long int) res;
|
|
}
|
|
|
|
|
|
static void *
|
|
thread (void *arg)
|
|
{
|
|
int status;
|
|
pid_t pid;
|
|
|
|
pid = fork ();
|
|
if (pid == 0)
|
|
{
|
|
/* We check whether the `prepare' and `child' function ran. */
|
|
exit (var != (PREPARE_BIT | CHILD_BIT));
|
|
}
|
|
else if (pid == (pid_t) -1)
|
|
error (EXIT_FAILURE, errno, "cannot fork");
|
|
|
|
if (waitpid (pid, &status, 0) != pid)
|
|
error (EXIT_FAILURE, errno, "wrong child");
|
|
|
|
if (WTERMSIG (status) != 0)
|
|
error (EXIT_FAILURE, 0, "Child terminated incorrectly");
|
|
status = WEXITSTATUS (status);
|
|
|
|
if (status == 0)
|
|
status = var != (PREPARE_BIT | PARENT_BIT);
|
|
|
|
return (void *) (long int) status;
|
|
}
|