Implement a benchmark for GrResourceCache

bench/MemoryBench.cpp

 /*
  * 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 "SkBenchmark.h"
 #include "SkCanvas.h"
 #include "SkPaint.h"
 #include "SkRandom.h"
 #include "SkChunkAlloc.h"
 #include "SkString.h"
 
 class ChunkAllocBench : public SkBenchmark {
     SkString    fName;
     size_t      fMinSize;
 public:
     ChunkAllocBench(size_t minSize)  {
         fMinSize = minSize;
         fName.printf("chunkalloc_" SK_SIZE_T_SPECIFIER, minSize);
-        fIsRendering = false;
+    }
+
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
     }
 
 protected:
     virtual const char* onGetName() SK_OVERRIDE {
         return fName.c_str();
     }
 
     virtual void onDraw(SkCanvas*) SK_OVERRIDE {
         size_t inc = fMinSize >> 4;
         SkASSERT(inc > 0);
@@ skipping 45 matching lines @@
         , fUseCalloc(useCalloc) {
         fName.printf("memory_%s", useCalloc ? "calloc" : "malloc_bzero");
         if (read && write) {
             fName.appendf("_rw");
         } else if (read) {
             fName.appendf("_r");
         } else if (write) {
             fName.appendf("_w");
         }
         fName.appendf("_"SK_SIZE_T_SPECIFIER, num);
-        fIsRendering = false;
+    }
+
+    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
+        return backend == kNonRendering_Backend;
     }
 
 protected:
     virtual const char* onGetName() SK_OVERRIDE {
         return fName.c_str();
     }
 
     virtual void onDraw(SkCanvas*) SK_OVERRIDE {
         for (int i = 0; i < this->getLoops(); i++) {
             int* zeros = fUseCalloc ? calloc(fNum) : malloc_bzero(fNum);
@@ skipping 51 matching lines @@
 DEF_BENCH(return new ZerosBench(300, 1, 1, 1))
 
 DEF_BENCH(return new ZerosBench(4, 0, 0, 0))
 DEF_BENCH(return new ZerosBench(4, 0, 0, 1))
 DEF_BENCH(return new ZerosBench(4, 0, 1, 0))
 DEF_BENCH(return new ZerosBench(4, 0, 1, 1))
 DEF_BENCH(return new ZerosBench(4, 1, 0, 0))
 DEF_BENCH(return new ZerosBench(4, 1, 0, 1))
 DEF_BENCH(return new ZerosBench(4, 1, 1, 0))
 DEF_BENCH(return new ZerosBench(4, 1, 1, 1))