X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=urcu.h;h=e72b57416f730fb4775100e96ba2da86729846b6;hb=dbc6128f26035b2903e3278c6c41990c90831511;hp=b46033f29090582749b949f30e2a6d95e2723c79;hpb=af02d47e5d0712e5ccde6d8f1ee89f18de798cad;p=urcu.git

diff --git a/urcu.h b/urcu.h
index b46033f..e72b574 100644
--- a/urcu.h
+++ b/urcu.h
@@ -34,6 +34,14 @@
 #include <stdlib.h>
 #include <pthread.h>
 
+/*
+ * Important !
+ *
+ * Each thread containing read-side critical sections must be registered
+ * with rcu_register_thread() before calling rcu_read_lock().
+ * rcu_unregister_thread() should be called before the thread exits.
+ */
+
 #ifdef _LGPL_SOURCE
 
 #include <urcu-static.h>
@@ -48,6 +56,7 @@
 #define rcu_read_unlock		_rcu_read_unlock
 
 #define rcu_assign_pointer	_rcu_assign_pointer
+#define rcu_cmpxchg_pointer	_rcu_cmpxchg_pointer
 #define rcu_xchg_pointer	_rcu_xchg_pointer
 #define rcu_publish_content	_rcu_publish_content
 
@@ -67,6 +76,10 @@ extern void *rcu_assign_pointer_sym(void **p, void *v);
 #define rcu_assign_pointer(p, v)			\
 	rcu_assign_pointer_sym((void **)(p), (v))
 
+extern void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new);
+#define rcu_cmpxchg_pointer(p, old, _new)		\
+	rcu_cmpxchg_pointer_sym((void **)(p), (old), (_new))
+
 extern void *rcu_xchg_pointer_sym(void **p, void *v);
 #define rcu_xchg_pointer(p, v)				\
 	rcu_xchg_pointer_sym((void **)(p), (v))