ref_get()/ref_put() use atomic gcc operations if supported, thanks to Thomas Jarosch for the patch

2008-12-02 12:14:32 +00:00
parent 6905f794bb
commit efd0fe21e4
3 changed files with 32 additions and 13 deletions
@@ -248,6 +248,14 @@ void nop();
 */
 typedef volatile u_int refcount_t;

+
+#ifdef HAVE_GCC_ATOMIC_OPERATIONS
+
+#define ref_get(ref) {__sync_fetch_and_add(ref, 1); }
+#define ref_put(ref) (!__sync_sub_and_fetch(ref, 1))
+
+#else /* !HAVE_GCC_ATOMIC_OPERATIONS */
+
 /**
 * Get a new reference.
 *
@@ -268,6 +276,8 @@ void ref_get(refcount_t *ref);
 */
 bool ref_put(refcount_t *ref);

+#endif /* HAVE_GCC_ATOMIC_OPERATIONS */
+
 /**
 * Get printf hooks for time.
 *