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Add a mutex test

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This tests that mutexes do what they are supposed to do.
Copied from a similar test for bitlocks in gthread/tests/bitlock.c.
This commit is contained in:
Matthias Clasen 2011-09-23 06:29:36 -04:00
parent bcd02d7a75
commit 81b3708184
1 changed files with 77 additions and 0 deletions
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77
glib/tests/mutex.c
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@ -77,6 +77,82 @@ test_mutex4 (void)
g_mutex_clear (&mutex);
}
#define LOCKS 48
#define ITERATIONS 10000
#define THREADS 100
GThread *owners[LOCKS];
GMutex locks[LOCKS];
gpointer ptrs[LOCKS];
static void
acquire (gint nr)
{
GThread *self;
self = g_thread_self ();
if (!g_mutex_trylock (&locks[nr]))
{
if (g_test_verbose ())
g_print ("thread %p going to block on lock %d\n", self, nr);
g_mutex_lock (&locks[nr]);
}
g_assert (owners[nr] == NULL); /* hopefully nobody else is here */
owners[nr] = self;
/* let some other threads try to ruin our day */
g_thread_yield ();
g_thread_yield ();
g_thread_yield ();
g_assert (owners[nr] == self); /* hopefully this is still us... */
owners[nr] = NULL; /* make way for the next guy */
g_mutex_unlock (&locks[nr]);
}
static gpointer
thread_func (gpointer data)
{
gint i;
GRand *rand;
rand = g_rand_new ();
for (i = 0; i < ITERATIONS; i++)
acquire (g_rand_int_range (rand, 0, LOCKS));
g_rand_free (rand);
return NULL;
}
static void
test_mutex5 (void)
{
gint i;
GThread *threads[THREADS];
for (i = 0; i < LOCKS; i++)
g_mutex_init (&locks[i]);
for (i = 0; i < THREADS; i++)
threads[i] = g_thread_create (thread_func, NULL, TRUE, NULL);
for (i = 0; i < THREADS; i++)
g_thread_join (threads[i]);
for (i = 0; i < LOCKS; i++)
g_mutex_clear (&locks[i]);
for (i = 0; i < LOCKS; i++)
g_assert (owners[i] == NULL);
}
int
main (int argc, char *argv[])
@ -87,6 +163,7 @@ main (int argc, char *argv[])
g_test_add_func ("/thread/mutex2", test_mutex2);
g_test_add_func ("/thread/mutex3", test_mutex3);
g_test_add_func ("/thread/mutex4", test_mutex4);
g_test_add_func ("/thread/mutex5", test_mutex5);
return g_test_run ();
}