GThread: make refcounting public

glib/glib.symbols

@@ -1100,9 +1100,11 @@ g_thread_init_glib
 g_thread_join
 g_thread_new
 g_thread_new_full
+g_thread_ref
 g_thread_self
 g_thread_set_priority
 g_thread_use_default_impl
+g_thread_unref
 g_thread_yield
 g_static_mutex_free
 g_static_mutex_get_mutex_impl

glib/gthread.c

@@ -666,7 +666,17 @@ void
 
 /* GThread {{{1 -------------------------------------------------------- */
 
-static void
+GThread *
+g_thread_ref (GThread *thread)
+{
+  GRealThread *real = (GRealThread *) thread;
+
+  g_atomic_int_inc (&real->ref_count);
+
+  return thread;
+}
+
+void
 g_thread_unref (GThread *thread)
 {
   GRealThread *real = (GRealThread *) thread;

glib/gthread.h

@@ -137,6 +137,8 @@ struct _GOnce
 #  define G_TRYLOCK(name) g_mutex_trylock (&G_LOCK_NAME (name))
 #endif /* !G_DEBUG_LOCKS */
 
+GThread *       g_thread_ref                    (GThread        *thread);
+void            g_thread_unref                  (GThread        *thread);
 GThread *       g_thread_new                    (const gchar    *name,
                                                  GThreadFunc     func,
                                                  gpointer        data,