c732c03482
Have been wondering for a while. Test: libutils_benchmark -------------------------------------------------------------------- Benchmark Time CPU Iterations -------------------------------------------------------------------- BM_fill_android_vector 24.6 ns 24.5 ns 28207074 BM_fill_std_vector 5.24 ns 5.21 ns 130675479 BM_prepend_android_vector 5783 ns 5770 ns 100000 BM_prepend_std_vector 5731 ns 5717 ns 100000 Change-Id: Ie296ce2c4395121b6a456d57421f820909418afe
53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
/*
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* Copyright (C) 2019 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 <benchmark/benchmark.h>
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#include <utils/Vector.h>
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#include <vector>
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void BM_fill_android_vector(benchmark::State& state) {
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android::Vector<char> v;
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while (state.KeepRunning()) {
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v.push('A');
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}
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}
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BENCHMARK(BM_fill_android_vector);
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void BM_fill_std_vector(benchmark::State& state) {
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std::vector<char> v;
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while (state.KeepRunning()) {
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v.push_back('A');
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}
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}
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BENCHMARK(BM_fill_std_vector);
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void BM_prepend_android_vector(benchmark::State& state) {
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android::Vector<char> v;
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while (state.KeepRunning()) {
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v.insertAt('A', 0);
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}
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}
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BENCHMARK(BM_prepend_android_vector);
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void BM_prepend_std_vector(benchmark::State& state) {
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std::vector<char> v;
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while (state.KeepRunning()) {
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v.insert(v.begin(), 'A');
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}
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}
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BENCHMARK(BM_prepend_std_vector);
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BENCHMARK_MAIN();
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