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
15class ChunkAllocBench : public Benchmark {
16    SkString    fName;
17    size_t      fMinSize;
18public:
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
28protected:
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
52private:
53    typedef Benchmark INHERITED;
54};
55
56DEF_BENCH( return new ChunkAllocBench(64); )
57DEF_BENCH( return new ChunkAllocBench(8*1024); )
58
59