void
bus_registry_unref (BusRegistry *registry)
{
_dbus_assert (registry->refcount > 0);
registry->refcount -= 1;
if (registry->refcount == 0)
{
if (registry->service_hash)
_dbus_hash_table_unref (registry->service_hash);
if (registry->service_pool)
_dbus_mem_pool_free (registry->service_pool);
if (registry->owner_pool)
_dbus_mem_pool_free (registry->owner_pool);
if (registry->service_sid_table)
_dbus_hash_table_unref (registry->service_sid_table);
dbus_free (registry);
}
}
static void
free_link (DBusList *link)
{
_DBUS_LOCK (list);
if (_dbus_mem_pool_dealloc (list_pool, link))
{
_dbus_mem_pool_free (list_pool);
list_pool = NULL;
}
_DBUS_UNLOCK (list);
}
static void
free_link (DBusList *link)
{
if (!_DBUS_LOCK (list))
_dbus_assert_not_reached ("we should have initialized global locks "
"before we allocated a linked-list link");
if (_dbus_mem_pool_dealloc (list_pool, link))
{
_dbus_mem_pool_free (list_pool);
list_pool = NULL;
}
_DBUS_UNLOCK (list);
}
/* the mem pool is probably a speed hit, with the thread
* lock, though it does still save memory - unknown.
*/
static DBusList*
alloc_link (void *data)
{
DBusList *link;
if (!_DBUS_LOCK (list))
return NULL;
if (list_pool == NULL)
{
list_pool = _dbus_mem_pool_new (sizeof (DBusList), TRUE);
if (list_pool == NULL)
{
_DBUS_UNLOCK (list);
return NULL;
}
link = _dbus_mem_pool_alloc (list_pool);
if (link == NULL)
{
_dbus_mem_pool_free (list_pool);
list_pool = NULL;
_DBUS_UNLOCK (list);
return NULL;
}
}
else
{
link = _dbus_mem_pool_alloc (list_pool);
}
if (link)
link->data = data;
_DBUS_UNLOCK (list);
return link;
}
static void
time_for_size (int size)
{
int i;
int j;
clock_t start;
clock_t end;
#define FREE_ARRAY_SIZE 512
#define N_ITERATIONS FREE_ARRAY_SIZE * 512
void *to_free[FREE_ARRAY_SIZE];
DBusMemPool *pool;
_dbus_verbose ("Timings for size %d\n", size);
_dbus_verbose (" malloc\n");
start = clock ();
i = 0;
j = 0;
while (i < N_ITERATIONS)
{
to_free[j] = dbus_malloc (size);
_dbus_assert (to_free[j] != NULL); /* in a real app of course this is wrong */
++j;
if (j == FREE_ARRAY_SIZE)
{
j = 0;
while (j < FREE_ARRAY_SIZE)
{
dbus_free (to_free[j]);
++j;
}
j = 0;
}
++i;
}
end = clock ();
_dbus_verbose (" created/destroyed %d elements in %g seconds\n",
N_ITERATIONS, (end - start) / (double) CLOCKS_PER_SEC);
_dbus_verbose (" mempools\n");
start = clock ();
pool = _dbus_mem_pool_new (size, FALSE);
i = 0;
j = 0;
while (i < N_ITERATIONS)
{
to_free[j] = _dbus_mem_pool_alloc (pool);
_dbus_assert (to_free[j] != NULL); /* in a real app of course this is wrong */
++j;
if (j == FREE_ARRAY_SIZE)
{
j = 0;
while (j < FREE_ARRAY_SIZE)
{
_dbus_mem_pool_dealloc (pool, to_free[j]);
++j;
}
j = 0;
}
++i;
}
_dbus_mem_pool_free (pool);
end = clock ();
_dbus_verbose (" created/destroyed %d elements in %g seconds\n",
N_ITERATIONS, (end - start) / (double) CLOCKS_PER_SEC);
_dbus_verbose (" zeroed malloc\n");
start = clock ();
i = 0;
j = 0;
while (i < N_ITERATIONS)
{
to_free[j] = dbus_malloc0 (size);
_dbus_assert (to_free[j] != NULL); /* in a real app of course this is wrong */
++j;
if (j == FREE_ARRAY_SIZE)
{
j = 0;
while (j < FREE_ARRAY_SIZE)
{
dbus_free (to_free[j]);
++j;
}
j = 0;
}
++i;
}
end = clock ();
_dbus_verbose (" created/destroyed %d elements in %g seconds\n",
N_ITERATIONS, (end - start) / (double) CLOCKS_PER_SEC);
_dbus_verbose (" zeroed mempools\n");
start = clock ();
pool = _dbus_mem_pool_new (size, TRUE);
i = 0;
j = 0;
while (i < N_ITERATIONS)
{
to_free[j] = _dbus_mem_pool_alloc (pool);
_dbus_assert (to_free[j] != NULL); /* in a real app of course this is wrong */
++j;
if (j == FREE_ARRAY_SIZE)
{
j = 0;
while (j < FREE_ARRAY_SIZE)
{
_dbus_mem_pool_dealloc (pool, to_free[j]);
++j;
}
j = 0;
}
++i;
}
_dbus_mem_pool_free (pool);
end = clock ();
_dbus_verbose (" created/destroyed %d elements in %g seconds\n",
N_ITERATIONS, (end - start) / (double) CLOCKS_PER_SEC);
}