diff --git a/libs/ui/GraphicBufferAllocator.cpp b/libs/ui/GraphicBufferAllocator.cpp
index 5a67dc4..0861a1f 100644
--- a/libs/ui/GraphicBufferAllocator.cpp
+++ b/libs/ui/GraphicBufferAllocator.cpp
@@ -60,6 +60,15 @@
 
 GraphicBufferAllocator::~GraphicBufferAllocator() {}
 
+size_t GraphicBufferAllocator::getTotalSize() const {
+    Mutex::Autolock _l(sLock);
+    size_t total = 0;
+    for (size_t i = 0; i < sAllocList.size(); ++i) {
+        total += sAllocList.valueAt(i).size;
+    }
+    return total;
+}
+
 void GraphicBufferAllocator::dump(std::string& result) const {
     Mutex::Autolock _l(sLock);
     KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
diff --git a/libs/ui/include/ui/GraphicBufferAllocator.h b/libs/ui/include/ui/GraphicBufferAllocator.h
index 3a547b6..25d4512 100644
--- a/libs/ui/include/ui/GraphicBufferAllocator.h
+++ b/libs/ui/include/ui/GraphicBufferAllocator.h
@@ -49,6 +49,8 @@
 
     status_t free(buffer_handle_t handle);
 
+    size_t getTotalSize() const;
+
     void dump(std::string& res) const;
     static void dumpToSystemLog();