1 files changed, 12 insertions, 10 deletions
diff --git a/cpp/sca/kernel/function.hpp b/cpp/sca/kernel/function.hpp
index 9492879e5e..c99ee5dbad 100644
--- a/cpp/sca/kernel/function.hpp
+++ b/cpp/sca/kernel/function.hpp
@@ -64,8 +64,6 @@ bool printLambdaCounters() {
 
 template<typename R, typename... P> class Callable {
 public:
-    unsigned int refCount;
-
     Callable() : refCount(0) {
     }
 
@@ -76,14 +74,6 @@ public:
     virtual ~Callable() {
     }
 
-    unsigned int acquire() {
-        return __sync_add_and_fetch(&refCount, 1);
-    }
-
-    unsigned int release() {
-        return __sync_sub_and_fetch(&refCount, 1);
-    }
-
     template<typename F> class Proxy: public Callable {
     public:
         Proxy(const F& f) : function(f) {
@@ -112,6 +102,18 @@ public:
         const F function;
     };
 
+private:
+    friend class gc_counting_ptr<Callable>;
+
+    unsigned int refCount;
+
+    unsigned int acquire() {
+        return __sync_add_and_fetch(&refCount, 1);
+    }
+
+    unsigned int release() {
+        return __sync_sub_and_fetch(&refCount, 1);
+    }
 };
 
 template<typename S> class lambda;