diff --git a/include/binder/Parcel.h b/include/binder/Parcel.h
index 0ba3abe..da960aa 100644
--- a/include/binder/Parcel.h
+++ b/include/binder/Parcel.h
@@ -337,6 +337,12 @@
     public:
         inline void* data() { return mData; }
     };
+
+private:
+    size_t mBlobAshmemSize;
+
+public:
+    size_t getBlobAshmemSize() const;
 };
 
 // ---------------------------------------------------------------------------