X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=urcu.c;h=32f74880492ce40527c8b5b40560249eac485b90;hb=6ee91d83a7a5b33160158f57f94dd75e6d0a67ed;hp=d474fc8a3e8311c036f151698afdeaab7bde192a;hpb=81d1f1f5a2d41dfd76defc700cdf68660d12f323;p=urcu.git

diff --git a/urcu.c b/urcu.c
index d474fc8..32f7488 100644
--- a/urcu.c
+++ b/urcu.c
@@ -37,6 +37,8 @@
 #include "urcu.h"
 
 #ifndef URCU_MB
+static int init_done;
+
 void __attribute__((constructor)) urcu_init(void);
 void __attribute__((destructor)) urcu_exit(void);
 #else
@@ -45,8 +47,6 @@ void urcu_init(void)
 }
 #endif
 
-static int init_done;
-
 static pthread_mutex_t urcu_mutex = PTHREAD_MUTEX_INITIALIZER;
 
 /*
@@ -347,6 +347,12 @@ void *rcu_xchg_pointer_sym(void **p, void *v)
 	return xchg(p, v);
 }
 
+void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new)
+{
+	wmb();
+	return cmpxchg(p, old, _new);
+}
+
 void *rcu_publish_content_sym(void **p, void *v)
 {
 	void *oldptr;