36352bf5e3
NOPRESUBMIT=true BUG=skia: DOCS_PREVIEW= https://skia.org/?cl=1037793002 Review URL: https://codereview.chromium.org/1037793002
78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
/*
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* Copyright 2014 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 "SkRandom.h"
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#include "SkTemplates.h"
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#include "SkUtils.h"
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template <typename Memcpy32>
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class Memcpy32Bench : public Benchmark {
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public:
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explicit Memcpy32Bench(int count, Memcpy32 memcpy32, const char* name)
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: fCount(count)
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, fMemcpy32(memcpy32)
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, fName(SkStringPrintf("%s_%d", name, count)) {}
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const char* onGetName() override {
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return fName.c_str();
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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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void onPreDraw() override {
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fDst.reset(fCount);
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fSrc.reset(fCount);
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SkRandom rand;
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for (int i = 0; i < fCount; i++) {
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fSrc[i] = rand.nextU();
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}
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}
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void onDraw(const int loops, SkCanvas*) override {
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for (int i = 0; i < loops; i++) {
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fMemcpy32(fDst, fSrc, fCount);
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}
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}
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private:
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SkAutoTMalloc<uint32_t> fDst, fSrc;
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int fCount;
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Memcpy32 fMemcpy32;
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const SkString fName;
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};
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template <typename Memcpy32>
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static Memcpy32Bench<Memcpy32>* Bench(int count, Memcpy32 memcpy32, const char* name) {
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return new Memcpy32Bench<Memcpy32>(count, memcpy32, name);
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}
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#define BENCH(memcpy32, count) DEF_BENCH(return Bench(count, memcpy32, #memcpy32); )
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// Let the libc developers do what they think is best.
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static void memcpy32_memcpy(uint32_t* dst, const uint32_t* src, int count) {
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memcpy(dst, src, sizeof(uint32_t) * count);
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}
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BENCH(memcpy32_memcpy, 10)
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BENCH(memcpy32_memcpy, 100)
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BENCH(memcpy32_memcpy, 1000)
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BENCH(memcpy32_memcpy, 10000)
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BENCH(memcpy32_memcpy, 100000)
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// Test our chosen best, from SkUtils.h
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BENCH(sk_memcpy32, 10)
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BENCH(sk_memcpy32, 100)
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BENCH(sk_memcpy32, 1000)
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BENCH(sk_memcpy32, 10000)
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BENCH(sk_memcpy32, 100000)
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#undef BENCH
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