Commit 1ce6d47e authored by Tim Janik's avatar Tim Janik Committed by Tim Janik

test g_once_init_*() before and after g_thread_init() and test concurrency

Mon Aug 13 14:21:44 2007  Tim Janik  <timj@imendio.com>

        * tests/onceinit.c: test g_once_init_*() before and after
        g_thread_init() and test concurrency resolution.



svn path=/trunk/; revision=5698
parent 8aa559d7
Mon Aug 13 14:21:44 2007 Tim Janik <timj@imendio.com>
* tests/onceinit.c: test g_once_init_*() before and after
g_thread_init() and test concurrency resolution.
Mon Aug 13 14:18:22 2007 Tim Janik <timj@imendio.com>
* glib/gthread.c (g_thread_create_full): prevent linking a freed
......
......@@ -91,6 +91,7 @@ test_programs = \
markup-escape-test \
module-test \
node-test \
onceinit \
option-test \
patterntest \
printf-test \
......@@ -163,6 +164,7 @@ markup_escape_test_LDADD = $(progs_ldadd)
module_test_LDADD = $(module_ldadd) $(module_test_exp)
module_test_LDFLAGS = $(G_MODULE_LDFLAGS)
node_test_LDADD = $(progs_ldadd)
onceinit_LDADD = $(thread_ldadd)
option_test_LDADD = $(progs_ldadd)
printf_test_LDADD = $(progs_ldadd)
queue_test_LDADD = $(progs_ldadd)
......
/* g_once_init_*() test
* Copyright (C) 2007 Tim Janik
*
* 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>
#include <stdlib.h>
#define N_THREADS (11)
static GMutex *tmutex = NULL;
static GCond *tcond = NULL;
static volatile int tmain_call_count = 0;
static char dummy_value = 'x';
static void
assert_singleton_execution1 (void)
{
static volatile int seen_execution = 0;
int old_seen_execution = g_atomic_int_exchange_and_add (&seen_execution, 1);
if (old_seen_execution != 0)
g_error ("%s: function executed more than once", G_STRFUNC);
}
static void
assert_singleton_execution2 (void)
{
static volatile int seen_execution = 0;
int old_seen_execution = g_atomic_int_exchange_and_add (&seen_execution, 1);
if (old_seen_execution != 0)
g_error ("%s: function executed more than once", G_STRFUNC);
}
static void
assert_singleton_execution3 (void)
{
static volatile int seen_execution = 0;
int old_seen_execution = g_atomic_int_exchange_and_add (&seen_execution, 1);
if (old_seen_execution != 0)
g_error ("%s: function executed more than once", G_STRFUNC);
}
static void
initializer1 (void)
{
static volatile gsize initialized = 0;
if (g_once_init_enter (&initialized))
{
gsize initval = 42;
assert_singleton_execution1();
g_once_init_leave (&initialized, initval);
}
}
static gpointer
initializer2 (void)
{
static volatile gsize initialized = 0;
if (g_once_init_enter (&initialized))
{
void *pointer_value = &dummy_value;
assert_singleton_execution2();
g_once_init_leave (&initialized, (gsize) pointer_value);
}
return (void*) initialized;
}
static void
initializer3 (void)
{
static volatile gsize initialized = 0;
if (g_once_init_enter (&initialized))
{
gsize initval = 42;
assert_singleton_execution3();
g_usleep (25 * 1000); /* waste time for multiple threads to wait */
g_once_init_leave (&initialized, initval);
}
}
static gpointer
tmain_call_initializer3 (gpointer user_data)
{
g_mutex_lock (tmutex);
g_cond_wait (tcond, tmutex);
g_mutex_unlock (tmutex);
//g_printf ("[");
initializer3();
//g_printf ("]\n");
g_atomic_int_exchange_and_add (&tmain_call_count, 1);
return NULL;
}
int
main (int argc,
char *argv[])
{
GThread *threads[11];
int i;
/* test simple initializer */
initializer1();
initializer1();
/* test pointer initializer */
void *p = initializer2();
g_assert (p == &dummy_value);
p = initializer2();
g_assert (p == &dummy_value);
/* setup threads */
g_thread_init (NULL);
tmutex = g_mutex_new ();
tcond = g_cond_new ();
/* start multiple threads for initializer3() */
g_mutex_lock (tmutex);
for (i = 0; i < N_THREADS; i++)
threads[i] = g_thread_create (tmain_call_initializer3, 0, FALSE, NULL);
g_mutex_unlock (tmutex);
/* concurrently call initializer3() */
g_cond_broadcast (tcond);
/* loop until all threads passed the call to initializer3() */
while (g_atomic_int_get (&tmain_call_count) < i)
{
if (rand() % 2)
g_thread_yield(); /* concurrent shuffling for single core */
else
g_usleep (1000); /* concurrent shuffling for multi core */
g_cond_broadcast (tcond);
}
return 0;
}
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