4 files changed, 22 insertions, 2 deletions
diff --git a/src/core/SkBBoxHierarchy.cpp b/src/core/SkBBoxHierarchy.cpp
new file mode 100644
index 0000000000..a99bb9d97c
--- /dev/null
+++ b/src/core/SkBBoxHierarchy.cpp
@@ -0,0 +1,12 @@
+
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkBBoxHierarchy.h"
+
+SK_DEFINE_INST_COUNT(SkBBoxHierarchy)
+
diff --git a/src/core/SkBBoxHierarchy.h b/src/core/SkBBoxHierarchy.h
index 347871f87b..6625a846fe 100644
--- a/src/core/SkBBoxHierarchy.h
+++ b/src/core/SkBBoxHierarchy.h
@@ -11,14 +11,15 @@
 
 #include "SkRect.h"
 #include "SkTDArray.h"
+#include "SkRefCnt.h"
 
 /**
  * Interface for a spatial data structure that associates user data pointers with axis-aligned
  * bounding boxes, and allows efficient retrieval of intersections with query rectangles.
  */
-class SkBBoxHierarchy {
+class SkBBoxHierarchy : public SkRefCnt {
 public:
-    virtual ~SkBBoxHierarchy() { }
+    SK_DECLARE_INST_COUNT(SkBBoxHierarchy)
 
     /**
      * Insert a data pointer and corresponding bounding box
@@ -47,6 +48,9 @@ public:
      * Gets the number of insertions
      */
     virtual int getCount() const = 0;
+
+private:
+    typedef SkRefCnt INHERITED;
 };
 
 #endif
diff --git a/src/core/SkRTree.cpp b/src/core/SkRTree.cpp
index b6ff29b8c4..96f6b18c81 100644
--- a/src/core/SkRTree.cpp
+++ b/src/core/SkRTree.cpp
@@ -19,6 +19,8 @@ static inline void join_no_empty_check(const SkIRect& joinWith, SkIRect* out);
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
+SK_DEFINE_INST_COUNT(SkRTree)
+
 SkRTree* SkRTree::Create(int minChildren, int maxChildren, SkScalar aspectRatio) {
     if (minChildren < maxChildren && (maxChildren + 1) / 2 >= minChildren &&
         minChildren > 0 && maxChildren < static_cast<int>(SK_MaxU16)) {
diff --git a/src/core/SkRTree.h b/src/core/SkRTree.h
index 96881596c3..1f166489a1 100644
--- a/src/core/SkRTree.h
+++ b/src/core/SkRTree.h
@@ -42,6 +42,7 @@
  */
 class SkRTree : public SkBBoxHierarchy {
 public:
+    SK_DECLARE_INST_COUNT(SkRTree)
 
     /**
      * Create a new R-Tree with specified min/max child counts.
@@ -175,6 +176,7 @@ private:
 
     Node* allocateNode(uint16_t level);
 
+    typedef SkBBoxHierarchy INHERITED;
 };
 
 #endif