mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 17:53:37 +08:00
69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
|
/* Test concurrent dlopen and pthread_create: BZ 19329.
|
||
|
|
Copyright (C) 2021 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
|
||
|
|
<http://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
#include <dlfcn.h>
|
||
|
|
#include <pthread.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdatomic.h>
|
||
|
|
#include <support/xdlfcn.h>
|
||
|
|
#include <support/xthread.h>
|
||
|
|
|
||
|
|
#define THREADS 10000
|
||
|
|
|
||
|
|
static atomic_int done;
|
||
|
|
|
||
|
|
static void *
|
||
|
|
start (void *a)
|
||
|
|
{
|
||
|
|
/* Load a module with many dependencies that each have TLS. */
|
||
|
|
xdlopen ("tst-tls21mod.so", RTLD_LAZY);
|
||
|
|
atomic_store_explicit (&done, 1, memory_order_release);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void *
|
||
|
|
nop (void *a)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
do_test (void)
|
||
|
|
{
|
||
|
|
pthread_t t1, t2;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
/* Load a module with lots of dependencies and TLS. */
|
||
|
|
t1 = xpthread_create (0, start, 0);
|
||
|
|
|
||
|
|
/* Concurrently create lots of threads until dlopen is observably done. */
|
||
|
|
for (i = 0; i < THREADS; i++)
|
||
|
|
{
|
||
|
|
if (atomic_load_explicit (&done, memory_order_acquire) != 0)
|
||
|
|
break;
|
||
|
|
t2 = xpthread_create (0, nop, 0);
|
||
|
|
xpthread_join (t2);
|
||
|
|
}
|
||
|
|
|
||
|
|
xpthread_join (t1);
|
||
|
|
printf ("threads created during dlopen: %d\n", i);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#include <support/test-driver.c>
|