6ee20a57aa
This has caused issues and over time we have reduced the use of spinlocks, it was only used in few places and we still have evidence that it's causing ANRs. We use utils::Mutex instead which is a low overhead mutex implementation on Linux systems. FIXES=[321101014]
55 lines
1.3 KiB
C++
55 lines
1.3 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "PerformanceCounters.h"
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#include <utils/Allocator.h>
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#include <utils/Mutex.h>
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#include <benchmark/benchmark.h>
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using namespace utils;
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static void BM_std_mutex(benchmark::State& state) {
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static std::mutex l;
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PerformanceCounters pc(state);
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for (auto _ : state) {
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l.lock();
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l.unlock();
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}
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}
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static void BM_utils_mutex(benchmark::State& state) {
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static Mutex l;
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PerformanceCounters pc(state);
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for (auto _ : state) {
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l.lock();
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l.unlock();
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}
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}
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BENCHMARK(BM_std_mutex)
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->Threads(1)
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->Threads(2)
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->Threads(8)
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->ThreadPerCpu();
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BENCHMARK(BM_utils_mutex)
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->Threads(1)
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->Threads(2)
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->Threads(8)
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->ThreadPerCpu();
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