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134 lines
4.3 KiB
C++
134 lines
4.3 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#include <AzCore/EBus/OrderedEvent.h>
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#include <AzCore/UnitTest/TestTypes.h>
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#if defined(HAVE_BENCHMARK)
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//-------------------------------------------------------------------------
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// PERF TESTS
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//-------------------------------------------------------------------------
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#include <benchmark/benchmark.h>
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namespace Benchmark
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{
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static constexpr int32_t NumHandlers = 10000;
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static void BM_OrderedEventPerf_EventEmpty(benchmark::State& state)
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{
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AZ::OrderedEvent<int32_t> testEvent;
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AZ::OrderedEventHandler<int32_t> testHandler[NumHandlers];
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for (int32_t i = 0; i < NumHandlers; ++i)
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{
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testHandler[i] = AZ::OrderedEventHandler<int32_t>([]([[maybe_unused]] int32_t value) {});
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testHandler[i].Connect(testEvent);
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}
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while (state.KeepRunning())
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{
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testEvent.Signal(1);
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}
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}
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BENCHMARK(BM_OrderedEventPerf_EventEmpty);
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static void BM_OrderedEventPerf_EventIncrement(benchmark::State& state)
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{
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AZ::OrderedEvent<int32_t> testEvent;
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AZ::OrderedEventHandler<int32_t> testHandler[NumHandlers];
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int32_t incrementCounter = 0;
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for (int32_t i = 0; i < NumHandlers; ++i)
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{
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testHandler[i] = AZ::OrderedEventHandler<int32_t>([&incrementCounter]([[maybe_unused]] int32_t value) { ++incrementCounter; });
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testHandler[i].Connect(testEvent);
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}
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while (state.KeepRunning())
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{
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testEvent.Signal(1);
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}
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}
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BENCHMARK(BM_OrderedEventPerf_EventIncrement);
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class EBusPerfBaseline
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: public AZ::EBusTraits
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{
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public:
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static const AZ::EBusHandlerPolicy HandlerPolicy = AZ::EBusHandlerPolicy::Multiple;
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static const AZ::EBusAddressPolicy AddressPolicy = AZ::EBusAddressPolicy::Single;
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virtual void OnSignal(int32_t) = 0;
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};
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using EBusPerfBaselineBus = AZ::EBus<EBusPerfBaseline>;
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class EBusPerfBaselineImplEmpty
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: public EBusPerfBaselineBus::Handler
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{
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public:
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EBusPerfBaselineImplEmpty() { EBusPerfBaselineBus::Handler::BusConnect(); }
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~EBusPerfBaselineImplEmpty() override { EBusPerfBaselineBus::Handler::BusDisconnect(); }
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void OnSignal(int32_t) override {}
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};
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static void BM_OrderedEventPerf_EBusEmpty(benchmark::State& state)
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{
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EBusPerfBaselineImplEmpty testHandler[NumHandlers];
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while (state.KeepRunning())
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{
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EBusPerfBaselineBus::Broadcast(&EBusPerfBaseline::OnSignal, 1);
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}
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}
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BENCHMARK(BM_OrderedEventPerf_EBusEmpty);
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class EBusPerfBaselineImplIncrement
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: public EBusPerfBaselineBus::Handler
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{
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public:
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EBusPerfBaselineImplIncrement() { EBusPerfBaselineBus::Handler::BusConnect(); }
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~EBusPerfBaselineImplIncrement() override { EBusPerfBaselineBus::Handler::BusDisconnect(); }
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void SetIncrementCounter(int32_t* incrementCounter) { m_incrementCounter = incrementCounter; }
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void OnSignal(int32_t) override { ++(*m_incrementCounter); }
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int32_t* m_incrementCounter;
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};
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static void BM_OrderedEventPerf_EBusIncrement(benchmark::State& state)
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{
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int32_t incrementCounter = 0;
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EBusPerfBaselineImplIncrement testHandler[NumHandlers];
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for (int32_t i = 0; i < NumHandlers; ++i)
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{
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testHandler[i].SetIncrementCounter(&incrementCounter);
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}
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while (state.KeepRunning())
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{
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EBusPerfBaselineBus::Broadcast(&EBusPerfBaseline::OnSignal, 1);
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}
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}
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BENCHMARK(BM_OrderedEventPerf_EBusIncrement);
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static void BM_OrderedEventPerf_EBusIncrementLambda(benchmark::State& state)
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{
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int32_t incrementCounter = 0;
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EBusPerfBaselineImplEmpty testHandler[NumHandlers];
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auto invokeFunc = [&incrementCounter](EBusPerfBaseline*, [[maybe_unused]] int32_t value) { ++incrementCounter; };
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while (state.KeepRunning())
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{
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EBusPerfBaselineBus::Broadcast(invokeFunc, 1);
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}
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}
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BENCHMARK(BM_OrderedEventPerf_EBusIncrementLambda);
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}
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#endif // HAVE_BENCHMARK
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