79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
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/*
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* Copyright 2015 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 "SkString.h"
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#include "SkTTopoSort.h"
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#include "sk_tool_utils.h"
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class TopoSortBench : public Benchmark {
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public:
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TopoSortBench() { }
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~TopoSortBench() override {
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sk_tool_utils::TopoTestNode::DeallocNodes(&fGraph);
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}
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bool isSuitableFor(Backend backend) override {
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return kNonRendering_Backend == backend;
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}
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protected:
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const char* onGetName() override {
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return "sort_topo_rand";
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}
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// Delayed initialization only done if onDraw will be called.
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void onDelayedSetup() override {
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sk_tool_utils::TopoTestNode::AllocNodes(&fGraph, kNumElements);
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for (int i = kNumElements-1; i > 0; --i) {
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int numEdges = fRand.nextU() % (kMaxEdges+1);
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for (int j = 0; j < numEdges; ++j) {
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int dep = fRand.nextU() % i;
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fGraph[i]->dependsOn(fGraph[dep]);
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}
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}
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}
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void onDraw(int loops, SkCanvas*) override {
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for (int i = 0; i < loops; ++i) {
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for (int j = 0; j < fGraph.count(); ++j) {
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fGraph[j]->reset();
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}
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sk_tool_utils::TopoTestNode::Shuffle(&fGraph, &fRand);
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SkDEBUGCODE(bool actualResult =) SkTTopoSort<sk_tool_utils::TopoTestNode>(&fGraph);
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SkASSERT(actualResult);
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#ifdef SK_DEBUG
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for (int j = 0; j < fGraph.count(); ++j) {
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SkASSERT(fGraph[j]->check());
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}
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#endif
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}
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}
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private:
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static const int kNumElements = 1000;
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static const int kMaxEdges = 5;
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SkTDArray<sk_tool_utils::TopoTestNode*> fGraph;
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SkRandom fRand;
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typedef Benchmark INHERITED;
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};
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///////////////////////////////////////////////////////////////////////////////
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DEF_BENCH( return new TopoSortBench(); )
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