MemoryBench.cpp revision fbfcd5602128ec010c82cb733c9cdc0a3254f9f3 
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 "SkBenchmark.h"
9#include "SkCanvas.h"
10#include "SkPaint.h"
11#include "SkRandom.h"
12#include "SkChunkAlloc.h"
13#include "SkString.h"
14
15class ChunkAllocBench : public SkBenchmark {
16    SkString    fName;
17    size_t      fMinSize;
18
19    enum {
20        N = SkBENCHLOOP(1000)
21    };
22public:
23    ChunkAllocBench(void* param, size_t minSize) : INHERITED(param) {
24        fMinSize = minSize;
25        fName.printf("chunkalloc_" SK_SIZE_T_SPECIFIER, minSize);
26    }
27
28protected:
29    virtual const char* onGetName() SK_OVERRIDE {
30        return fName.c_str();
31    }
32
33    virtual void onDraw(SkCanvas* canvas) 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 < N; ++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 SkBenchmark INHERITED;
54};
55
56static SkBenchmark* F0(void* p) { return new ChunkAllocBench(p, 64); }
57static SkBenchmark* F1(void* p) { return new ChunkAllocBench(p, 8*1024); }
58
59static BenchRegistry gR0(F0);
60static BenchRegistry gR1(F1);
61
62