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      1 /*
      2  * Copyright 2012 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 "SkCanvas.h"
     10 #include "SkChunkAlloc.h"
     11 #include "SkPaint.h"
     12 #include "SkRandom.h"
     13 #include "SkString.h"
     14 
     15 class ChunkAllocBench : public Benchmark {
     16     SkString    fName;
     17     size_t      fMinSize;
     18 public:
     19     ChunkAllocBench(size_t minSize)  {
     20         fMinSize = minSize;
     21         fName.printf("chunkalloc_" SK_SIZE_T_SPECIFIER, minSize);
     22     }
     23 
     24     virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
     25         return backend == kNonRendering_Backend;
     26     }
     27 
     28 protected:
     29     virtual const char* onGetName() SK_OVERRIDE {
     30         return fName.c_str();
     31     }
     32 
     33     virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
     34         size_t inc = fMinSize >> 4;
     35         SkASSERT(inc > 0);
     36         size_t total = fMinSize * 64;
     37 
     38         SkChunkAlloc alloc(fMinSize);
     39 
     40         for (int i = 0; i < loops; ++i) {
     41             size_t size = 0;
     42             int calls = 0;
     43             while (size < total) {
     44                 alloc.allocThrow(inc);
     45                 size += inc;
     46                 calls += 1;
     47             }
     48             alloc.reset();
     49         }
     50     }
     51 
     52 private:
     53     typedef Benchmark INHERITED;
     54 };
     55 
     56 DEF_BENCH( return new ChunkAllocBench(64); )
     57 DEF_BENCH( return new ChunkAllocBench(8*1024); )
     58 
     59