skia2/bench/WriterBench.cpp
scroggo@google.com dd39488997 Avoid a loop in writeString and writePad by zeroing padding first.
Also add a benchmark to time the new improved writeString. Before
my change the bench took ~1.23ms and afterwards it takes ~.95ms.

Add some testing to ensure that writePad works properly.

TEST=Writer32Test, WriterBench

Review URL: https://codereview.appspot.com/6438045

git-svn-id: http://skia.googlecode.com/svn/trunk@4742 2bbb7eff-a529-9590-31e7-b0007b416f81
2012-07-24 20:47:55 +00:00

41 lines
1.0 KiB
C++

/*
* Copyright 2012 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBenchmark.h"
#include "SkCanvas.h"
#include "SkWriter32.h"
class WriterBench : public SkBenchmark {
public:
WriterBench(void* param) : INHERITED(param) {}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return "writer";
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
static const char gStr[] = "abcdefghimjklmnopqrstuvwxyz";
static const size_t gLen = strlen(gStr);
SkWriter32 writer(256 * 4);
for (int i = 0; i < SkBENCHLOOP(800); i++) {
for (size_t j = 0; j <= gLen; j++) {
writer.writeString(gStr, j);
}
}
}
private:
typedef SkBenchmark INHERITED;
};
////////////////////////////////////////////////////////////////////////////////
static SkBenchmark* fact(void* p) { return new WriterBench(p); }
static BenchRegistry gReg(fact);