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      1 /*
      2  * Copyright 2013 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "SkBenchmark.h"
      9 #include "SkScaledImageCache.h"
     10 
     11 class ImageCacheBench : public SkBenchmark {
     12     SkScaledImageCache  fCache;
     13     SkBitmap            fBM;
     14 
     15     enum {
     16         N = SkBENCHLOOP(1000),
     17         DIM = 1,
     18         CACHE_COUNT = 500
     19     };
     20 public:
     21     ImageCacheBench(void* param) : INHERITED(param) , fCache(CACHE_COUNT * 100) {
     22         fBM.setConfig(SkBitmap::kARGB_8888_Config, DIM, DIM);
     23         fBM.allocPixels();
     24     }
     25 
     26     void populateCache() {
     27         SkScalar scale = 1;
     28         for (int i = 0; i < CACHE_COUNT; ++i) {
     29             SkBitmap tmp;
     30             tmp.setConfig(SkBitmap::kARGB_8888_Config, 1, 1);
     31             tmp.allocPixels();
     32             fCache.unlock(fCache.addAndLock(fBM, scale, scale, tmp));
     33             scale += 1;
     34         }
     35     }
     36 
     37 protected:
     38     virtual const char* onGetName() SK_OVERRIDE {
     39         return "imagecache";
     40     }
     41 
     42     virtual void onDraw(SkCanvas*) SK_OVERRIDE {
     43         if (fCache.getBytesUsed() == 0) {
     44             this->populateCache();
     45         }
     46 
     47         SkBitmap tmp;
     48         // search for a miss (-1 scale)
     49         for (int i = 0; i < N; ++i) {
     50             (void)fCache.findAndLock(fBM, -1, -1, &tmp);
     51         }
     52     }
     53 
     54 private:
     55     typedef SkBenchmark INHERITED;
     56 };
     57 
     58 ///////////////////////////////////////////////////////////////////////////////
     59 
     60 DEF_BENCH( return new ImageCacheBench(p); )
     61