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57 lines
1.4 KiB
57 lines
1.4 KiB
/* |
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* Copyright (C) 2014 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 <sys/syscall.h> |
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#include <unistd.h> |
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#include <benchmark/benchmark.h> |
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static void BM_unistd_getpid(benchmark::State& state) { |
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while (state.KeepRunning()) { |
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getpid(); |
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} |
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} |
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BENCHMARK(BM_unistd_getpid); |
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static void BM_unistd_getpid_syscall(benchmark::State& state) { |
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while (state.KeepRunning()) { |
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syscall(__NR_getpid); |
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} |
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} |
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BENCHMARK(BM_unistd_getpid_syscall); |
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#if defined(__BIONIC__) |
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// Stop GCC optimizing out our pure function. |
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/* Must not be static! */ pid_t (*gettid_fp)() = gettid; |
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static void BM_unistd_gettid(benchmark::State& state) { |
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while (state.KeepRunning()) { |
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gettid_fp(); |
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} |
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} |
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BENCHMARK(BM_unistd_gettid); |
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#endif |
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void BM_unistd_gettid_syscall(benchmark::State& state) { |
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while (state.KeepRunning()) { |
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syscall(__NR_gettid); |
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} |
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} |
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BENCHMARK(BM_unistd_gettid_syscall); |
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BENCHMARK_MAIN()
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