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 "Benchmark.h" 9 #include "SkScaledImageCache.h" 10 11 class ImageCacheBench : public Benchmark { 12 SkScaledImageCache fCache; 13 SkBitmap fBM; 14 15 enum { 16 DIM = 1, 17 CACHE_COUNT = 500 18 }; 19 public: ImageCacheBench()20 ImageCacheBench() : fCache(CACHE_COUNT * 100) { 21 fBM.allocN32Pixels(DIM, DIM); 22 } 23 populateCache()24 void populateCache() { 25 SkScalar scale = 1; 26 for (int i = 0; i < CACHE_COUNT; ++i) { 27 SkBitmap tmp; 28 tmp.allocN32Pixels(1, 1); 29 fCache.unlock(fCache.addAndLock(fBM, scale, scale, tmp)); 30 scale += 1; 31 } 32 } 33 34 protected: onGetName()35 virtual const char* onGetName() SK_OVERRIDE { 36 return "imagecache"; 37 } 38 onDraw(const int loops,SkCanvas *)39 virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE { 40 if (fCache.getTotalBytesUsed() == 0) { 41 this->populateCache(); 42 } 43 44 SkBitmap tmp; 45 // search for a miss (-1 scale) 46 for (int i = 0; i < loops; ++i) { 47 (void)fCache.findAndLock(fBM, -1, -1, &tmp); 48 } 49 } 50 51 private: 52 typedef Benchmark INHERITED; 53 }; 54 55 /////////////////////////////////////////////////////////////////////////////// 56 57 DEF_BENCH( return new ImageCacheBench(); ) 58