|
Packit |
6c4009 |
/* Test for exit/dlclose race (Bug 22180).
|
|
Packit |
6c4009 |
Copyright (C) 2017-2018 Free Software Foundation, Inc.
|
|
Packit |
6c4009 |
This file is part of the GNU C Library.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is free software; you can redistribute it and/or
|
|
Packit |
6c4009 |
modify it under the terms of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License as published by the Free Software Foundation; either
|
|
Packit |
6c4009 |
version 2.1 of the License, or (at your option) any later version.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is distributed in the hope that it will be useful,
|
|
Packit |
6c4009 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
6c4009 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
6c4009 |
Lesser General Public License for more details.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
You should have received a copy of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License along with the GNU C Library; if not, see
|
|
Packit |
6c4009 |
<http://www.gnu.org/licenses/>. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* This file must be run from within a directory called "stdlib". */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* This test verifies that when dlopen in one thread races against exit
|
|
Packit |
6c4009 |
in another thread, we don't call registered destructor twice.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
Expected result:
|
|
Packit |
6c4009 |
second
|
|
Packit |
6c4009 |
first
|
|
Packit |
6c4009 |
... clean termination
|
|
Packit |
6c4009 |
*/
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <stdio.h>
|
|
Packit |
6c4009 |
#include <stdlib.h>
|
|
Packit |
6c4009 |
#include <semaphore.h>
|
|
Packit |
6c4009 |
#include <support/check.h>
|
|
Packit |
6c4009 |
#include <support/xdlfcn.h>
|
|
Packit |
6c4009 |
#include <support/xthread.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Semaphore to ensure we have a happens-before between the first function
|
|
Packit |
6c4009 |
starting and exit being called. */
|
|
Packit |
6c4009 |
sem_t order1;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Semaphore to ensure we have a happens-before between the second function
|
|
Packit |
6c4009 |
starting and the first function returning. */
|
|
Packit |
6c4009 |
sem_t order2;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
void *
|
|
Packit |
6c4009 |
exit_thread (void *arg)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
/* Wait for the dlclose to start... */
|
|
Packit |
6c4009 |
sem_wait (&order1;;
|
|
Packit |
6c4009 |
/* Then try to run the exit sequence which should call all
|
|
Packit |
6c4009 |
__cxa_atexit registered functions and in parallel with
|
|
Packit |
6c4009 |
the executing dlclose(). */
|
|
Packit |
6c4009 |
exit (0);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
void
|
|
Packit |
6c4009 |
last (void)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
/* Let dlclose thread proceed. */
|
|
Packit |
6c4009 |
sem_post (&order2;;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
int
|
|
Packit |
6c4009 |
main (void)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
void *dso;
|
|
Packit |
6c4009 |
pthread_t thread;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
atexit (last);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
dso = xdlopen ("$ORIGIN/test-dlclose-exit-race-helper.so",
|
|
Packit |
6c4009 |
RTLD_NOW|RTLD_GLOBAL);
|
|
Packit |
6c4009 |
thread = xpthread_create (NULL, exit_thread, NULL);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
xdlclose (dso);
|
|
Packit |
6c4009 |
xpthread_join (thread);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
FAIL_EXIT1 ("Did not terminate via exit(0) in exit_thread() as expected.");
|
|
Packit |
6c4009 |
}
|