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implemented g_once_init_enter(), g_once_init_enter_impl() and

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Tue Jul 10 12:24:35 2007  Tim Janik  <timj@imendio.com>

        * glib/gthread.[hc]: implemented g_once_init_enter(),
        g_once_init_enter_impl() and g_once_init_leave(), based on a patch by
        Antoine Tremblay, fixes #65041.
        adapted exported inline function mechanism from gutils.[hc] for inlining
        g_once_init_enter_impl() in gthread.[hc].



svn path=/trunk/; revision=5616
This commit is contained in:
Tim Janik
2007-07-10 10:30:36 +00:00
committed by Tim Janik
parent 1da3f1559c
commit c9ccc828f1
4 changed files with 70 additions and 2 deletions
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40
glib/gthread.c
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@@ -32,6 +32,10 @@
* MT safe
*/
/* implement gthread.h's inline functions */
#define G_IMPLEMENT_INLINES 1
#define __G_THREAD_C__
#include "config.h"
#include "glib.h"
@@ -121,6 +125,7 @@ static GCond *g_once_cond = NULL;
static GPrivate *g_thread_specific_private = NULL;
static GRealThread *g_thread_all_threads = NULL;
static GSList *g_thread_free_indeces = NULL;
static GSList* g_once_init_list = NULL;
G_LOCK_DEFINE_STATIC (g_thread);
@@ -194,6 +199,41 @@ g_once_impl (GOnce *once,
return once->retval;
}
gboolean
g_once_init_enter_impl (volatile gsize *value_location)
{
gboolean need_init;
g_mutex_lock (g_once_mutex);
if (!g_once_init_list || !g_slist_find (g_once_init_list, (void*) value_location))
{
g_once_init_list = g_slist_prepend (g_once_init_list, (void*) value_location);
need_init = TRUE;
}
else
{
while (g_slist_find (g_once_init_list, (void*) value_location))
g_cond_wait (g_once_cond, g_once_mutex);
need_init = FALSE;
}
g_mutex_unlock (g_once_mutex);
return need_init;
}
void
g_once_init_leave (volatile gsize *value_location,
gsize initialization_value)
{
g_return_if_fail (g_atomic_pointer_get (value_location) == 0);
g_return_if_fail (initialization_value != 0);
g_return_if_fail (g_once_init_list != NULL);
g_atomic_pointer_set (value_location, initialization_value);
g_mutex_lock (g_once_mutex);
g_once_init_list = g_slist_remove (g_once_init_list, (void*) value_location);
g_cond_broadcast (g_once_cond);
g_mutex_unlock (g_once_mutex);
}
void
g_static_mutex_init (GStaticMutex *mutex)
{