зеркало из https://github.com/mozilla/moz-skia.git
98 строки
2.9 KiB
C++
98 строки
2.9 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 "SkBenchmark.h"
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#include "SkCanvas.h"
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#include "SkChecksum.h"
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#include "SkMD5.h"
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#include "SkRandom.h"
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#include "SkSHA1.h"
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#include "SkTemplates.h"
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enum ChecksumType {
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kChecksum_ChecksumType,
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kMD5_ChecksumType,
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kSHA1_ChecksumType,
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kMurmur3_ChecksumType,
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};
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class ComputeChecksumBench : public SkBenchmark {
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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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virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
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return backend == kNonRendering_Backend;
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}
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protected:
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virtual const char* onGetName() {
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switch (fType) {
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case kChecksum_ChecksumType: return "compute_checksum";
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case kMD5_ChecksumType: return "compute_md5";
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case kSHA1_ChecksumType: return "compute_sha1";
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case kMurmur3_ChecksumType: return "compute_murmur3";
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default: SK_CRASH(); return "";
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}
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}
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virtual void onDraw(const int loops, SkCanvas*) {
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switch (fType) {
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case kChecksum_ChecksumType: {
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for (int i = 0; i < loops; i++) {
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volatile uint32_t result = SkChecksum::Compute(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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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.update(reinterpret_cast<uint8_t*>(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 kSHA1_ChecksumType: {
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for (int i = 0; i < loops; i++) {
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SkSHA1 sha1;
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sha1.update(reinterpret_cast<uint8_t*>(fData), sizeof(fData));
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SkSHA1::Digest digest;
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sha1.finish(digest);
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}
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} break;
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case kMurmur3_ChecksumType: {
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for (int i = 0; i < loops; i++) {
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volatile uint32_t result = SkChecksum::Murmur3(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 SkBenchmark INHERITED;
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};
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///////////////////////////////////////////////////////////////////////////////
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DEF_BENCH( return new ComputeChecksumBench(kChecksum_ChecksumType); )
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DEF_BENCH( return new ComputeChecksumBench(kMD5_ChecksumType); )
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DEF_BENCH( return new ComputeChecksumBench(kSHA1_ChecksumType); )
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DEF_BENCH( return new ComputeChecksumBench(kMurmur3_ChecksumType); )
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