auto import from //branches/cupcake/...@125939
diff --git a/include/utils/RefBase.h b/include/utils/RefBase.h
index e37b56f..cbda0fd 100644
--- a/include/utils/RefBase.h
+++ b/include/utils/RefBase.h
@@ -17,6 +17,7 @@
#ifndef ANDROID_REF_BASE_H
#define ANDROID_REF_BASE_H
+#include <cutils/atomic.h>
#include <utils/TextOutput.h>
#include <stdint.h>
@@ -142,6 +143,29 @@
// ---------------------------------------------------------------------------
+template <class T>
+class LightRefBase
+{
+public:
+ inline LightRefBase() : mCount(0) { }
+ inline void incStrong(const void* id) const {
+ android_atomic_inc(&mCount);
+ }
+ inline void decStrong(const void* id) const {
+ if (android_atomic_dec(&mCount) == 1) {
+ delete static_cast<const T*>(this);
+ }
+ }
+
+protected:
+ inline ~LightRefBase() { }
+
+private:
+ mutable volatile int32_t mCount;
+};
+
+// ---------------------------------------------------------------------------
+
template <typename T>
class sp
{