Implement SkPicture::bytesUsed() for SkRecord backend

src/core/SkRTree.h

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkRTree_DEFINED
 #define SkRTree_DEFINED
@@ skipping 36 matching lines @@
     // Methods and constants below here are only public for tests.
 
     // Return the depth of the tree structure.
     int getDepth() const { return fCount ? fRoot.fSubtree->fLevel + 1 : 0; }
     // Insertion count (not overall node count, which may be greater).
     int getCount() const { return fCount; }
 
     // These values were empirically determined to produce reasonable performance in most cases.
     static const int kMinChildren = 6,
                      kMaxChildren = 11;
+    virtual size_t bytesUsed() const SK_OVERRIDE;

[mtklein, 2014/11/18 19:26:14]

Might want to move this above the "only public for tests" line, but I don't
think it'll be a big source of confusion either way.

[tomhudson, 2014/11/18 19:35:12]

Since we don't really want this used for production decision-making, 'only for
tests' seems like a reasonable way to tag it.

[mtklein, 2014/11/18 19:41:58]

Uh, okay, but that's a more confusing answer than "oh, didn't see that".

This use case is not testing.  We'd not expect people to look down here before
deciding whether or not to use
ApproximateBytesUsed().  If we're going to have a note that says "Don't use this
for anything but diagnostics,"
it belongs in that header.

This method isn't public for testing.  It's public to match the SkBBH interface.

+
 private:
     struct Node;
 
     struct Branch {
         union {
             Node* fSubtree;
             unsigned fOpIndex;
         };
         SkRect fBounds;
     };
@@ skipping 17 matching lines @@
     // This is the count of data elements (rather than total nodes in the tree)
     int fCount;
     SkScalar fAspectRatio;
     Branch fRoot;
     SkTDArray<Node> fNodes;
 
     typedef SkBBoxHierarchy INHERITED;
 };
 
 #endif