4e97607d9a
About 9x faster than Murmur3 for long inputs. Most of this is a mechanical change from SkChecksum::Murmur3(...) to SkOpts::hash(...). BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2208903002 CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot;master.client.skia.compile:Build-Ubuntu-GCC-x86_64-Release-CMake-Trybot,Build-Mac-Clang-x86_64-Release-CMake-Trybot Review-Url: https://codereview.chromium.org/2208903002
78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Benchmark.h"
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#include "SkCanvas.h"
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#include "SkChecksum.h"
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#include "SkOpts.h"
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#include "SkMD5.h"
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#include "SkRandom.h"
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#include "SkTemplates.h"
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enum ChecksumType {
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kMD5_ChecksumType,
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kHash_ChecksumType,
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};
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class ComputeChecksumBench : public Benchmark {
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enum {
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U32COUNT = 256,
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SIZE = U32COUNT * 4,
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};
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uint32_t fData[U32COUNT];
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ChecksumType fType;
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public:
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ComputeChecksumBench(ChecksumType type) : fType(type) {
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SkRandom rand;
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for (int i = 0; i < U32COUNT; ++i) {
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fData[i] = rand.nextU();
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}
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}
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bool isSuitableFor(Backend backend) override {
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return backend == kNonRendering_Backend;
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}
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protected:
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const char* onGetName() override {
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switch (fType) {
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case kMD5_ChecksumType: return "compute_md5";
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case kHash_ChecksumType: return "compute_hash";
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default: SK_ABORT("Invalid Type"); return "";
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}
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}
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void onDraw(int loops, SkCanvas*) override {
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switch (fType) {
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case kMD5_ChecksumType: {
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for (int i = 0; i < loops; i++) {
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SkMD5 md5;
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md5.write(fData, sizeof(fData));
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SkMD5::Digest digest;
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md5.finish(digest);
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}
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} break;
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case kHash_ChecksumType: {
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for (int i = 0; i < loops; i++) {
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volatile uint32_t result = SkOpts::hash(fData, sizeof(fData));
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sk_ignore_unused_variable(result);
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}
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}break;
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}
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}
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private:
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typedef Benchmark INHERITED;
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};
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///////////////////////////////////////////////////////////////////////////////
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DEF_BENCH( return new ComputeChecksumBench(kMD5_ChecksumType); )
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DEF_BENCH( return new ComputeChecksumBench(kHash_ChecksumType); )
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