mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-11-14 05:16:18 +01:00
96 lines
2.0 KiB
C
96 lines
2.0 KiB
C
/*
|
|
* Author: Simon McVittie <simon.mcvittie@collabora.co.uk>
|
|
* Copyright © 2011 Nokia Corporation
|
|
*
|
|
* This program 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 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* See the included COPYING file for more information.
|
|
*/
|
|
|
|
#include <glib.h>
|
|
|
|
/* On smcv's laptop, 1e4 iterations didn't always exhibit the bug, but 1e5
|
|
* iterations exhibited it 10/10 times in practice. YMMV. */
|
|
#define ITERATIONS 100000
|
|
|
|
static GStaticPrivate sp;
|
|
static GMutex *mutex;
|
|
static GCond *cond;
|
|
static guint i;
|
|
|
|
static volatile gint freed = 0;
|
|
|
|
static void
|
|
notify (gpointer p)
|
|
{
|
|
if (!g_atomic_int_compare_and_exchange (&freed, 0, 1))
|
|
{
|
|
g_error ("someone already freed it after %u iterations", i);
|
|
}
|
|
}
|
|
|
|
static gpointer thread_func (gpointer nil)
|
|
{
|
|
/* wait for main thread to reach its g_cond_wait call */
|
|
g_mutex_lock (mutex);
|
|
|
|
g_static_private_set (&sp, &sp, notify);
|
|
g_cond_broadcast (cond);
|
|
g_mutex_unlock (mutex);
|
|
|
|
return nil;
|
|
}
|
|
|
|
void
|
|
testcase (void)
|
|
{
|
|
g_test_bug ("642026");
|
|
|
|
g_thread_init (NULL);
|
|
|
|
mutex = g_mutex_new ();
|
|
cond = g_cond_new ();
|
|
|
|
g_mutex_lock (mutex);
|
|
|
|
for (i = 0; i < ITERATIONS; i++)
|
|
{
|
|
GThread *t1;
|
|
|
|
g_static_private_init (&sp);
|
|
freed = 0;
|
|
|
|
t1 = g_thread_create (thread_func, NULL, TRUE, NULL);
|
|
|
|
/* wait for t1 to set up its thread-private data */
|
|
g_cond_wait (cond, mutex);
|
|
|
|
/* exercise the bug, by racing with t1 to free the private data */
|
|
g_static_private_free (&sp);
|
|
g_thread_join (t1);
|
|
}
|
|
|
|
g_cond_free (cond);
|
|
g_mutex_unlock (mutex);
|
|
g_mutex_free (mutex);
|
|
}
|
|
|
|
int
|
|
main (int argc,
|
|
char **argv)
|
|
{
|
|
g_test_init (&argc, &argv, NULL);
|
|
g_test_bug_base ("https://bugzilla.gnome.org/show_bug.cgi?id=");
|
|
|
|
#ifdef G_ERRORCHECK_MUTEXES
|
|
g_test_add_func ("/glib/642026-ec", testcase);
|
|
#else
|
|
g_test_add_func ("/glib/642026", testcase);
|
|
#endif
|
|
|
|
return g_test_run ();
|
|
}
|