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/* Unit tests for GOnce and friends
* Copyright (C) 2011 Red Hat, Inc
* Author: Matthias Clasen
*
* This work is provided "as is"; redistribution and modification
* in whole or in part, in any medium, physical or electronic is
* permitted without restriction.
*
* This work 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.
*
* In no event shall the authors or contributors be liable for any
* direct, indirect, incidental, special, exemplary, or consequential
* damages (including, but not limited to, procurement of substitute
* goods or services; loss of use, data, or profits; or business
* interruption) however caused and on any theory of liability, whether
* in contract, strict liability, or tort (including negligence or
* otherwise) arising in any way out of the use of this software, even
* if advised of the possibility of such damage.
*/
#include <glib.h>
static gpointer
do_once (gpointer data)
{
static gint i = 0;
i++;
return GINT_TO_POINTER (i);
}
static void
test_once1 (void)
{
GOnce once = G_ONCE_INIT;
gpointer res;
g_assert (once.status == G_ONCE_STATUS_NOTCALLED);
res = g_once (&once, do_once, NULL);
g_assert_cmpint (GPOINTER_TO_INT (res), ==, 1);
g_assert (once.status == G_ONCE_STATUS_READY);
res = g_once (&once, do_once, NULL);
g_assert_cmpint (GPOINTER_TO_INT (res), ==, 1);
}
static void
test_once2 (void)
{
static gsize init = 0;
if (g_once_init_enter (&init))
{
g_assert (TRUE);
g_once_init_leave (&init, 1);
}
g_assert_cmpint (init, ==, 1);
if (g_once_init_enter (&init))
{
g_assert_not_reached ();
g_once_init_leave (&init, 2);
}
g_assert_cmpint (init, ==, 1);
}
#define THREADS 100
static gint64 shared;
static void
init_shared (void)
{
static gsize init = 0;
if (g_once_init_enter (&init))
{
shared += 42;
g_once_init_leave (&init, 1);
}
}
static gpointer
thread_func (gpointer data)
{
init_shared ();
return NULL;
}
static void
test_once3 (void)
{
gint i;
GThread *threads[THREADS];
shared = 0;
for (i = 0; i < THREADS; i++)
threads[i] = g_thread_new ("once3", thread_func, NULL);
for (i = 0; i < THREADS; i++)
g_thread_join (threads[i]);
g_assert_cmpint (shared, ==, 42);
}
static void
test_once4 (void)
{
static const gchar *val;
if (g_once_init_enter (&val))
g_once_init_leave (&val, "foo");
g_assert_cmpstr (val, ==, "foo");
}
int
main (int argc, char *argv[])
{
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/thread/once1", test_once1);
g_test_add_func ("/thread/once2", test_once2);
g_test_add_func ("/thread/once3", test_once3);
g_test_add_func ("/thread/once4", test_once4);
return g_test_run ();
}
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