Abseil Common Libraries (C++) (grcp 依赖)
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97 lines
2.5 KiB
97 lines
2.5 KiB
// Copyright 2022 The Abseil Authors. |
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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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// https://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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#include "absl/base/attributes.h" |
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#include "absl/base/log_severity.h" |
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#include "absl/flags/flag.h" |
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#include "absl/log/check.h" |
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#include "absl/log/globals.h" |
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#include "absl/log/log.h" |
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#include "absl/log/log_entry.h" |
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#include "absl/log/log_sink.h" |
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#include "absl/log/log_sink_registry.h" |
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#include "benchmark/benchmark.h" |
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namespace { |
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class NullLogSink : public absl::LogSink { |
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public: |
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NullLogSink() { absl::AddLogSink(this); } |
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~NullLogSink() override { absl::RemoveLogSink(this); } |
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void Send(const absl::LogEntry&) override {} |
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}; |
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constexpr int x = -1; |
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void BM_SuccessfulBinaryCheck(benchmark::State& state) { |
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int n = 0; |
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while (state.KeepRunningBatch(8)) { |
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CHECK_GE(n, x); |
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CHECK_GE(n, x); |
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CHECK_GE(n, x); |
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CHECK_GE(n, x); |
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CHECK_GE(n, x); |
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CHECK_GE(n, x); |
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CHECK_GE(n, x); |
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CHECK_GE(n, x); |
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++n; |
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} |
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benchmark::DoNotOptimize(n); |
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} |
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BENCHMARK(BM_SuccessfulBinaryCheck); |
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static void BM_SuccessfulUnaryCheck(benchmark::State& state) { |
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int n = 0; |
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while (state.KeepRunningBatch(8)) { |
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CHECK(n >= x); |
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CHECK(n >= x); |
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CHECK(n >= x); |
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CHECK(n >= x); |
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CHECK(n >= x); |
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CHECK(n >= x); |
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CHECK(n >= x); |
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CHECK(n >= x); |
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++n; |
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} |
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benchmark::DoNotOptimize(n); |
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} |
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BENCHMARK(BM_SuccessfulUnaryCheck); |
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static void BM_DisabledLogOverhead(benchmark::State& state) { |
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absl::ScopedStderrThreshold disable_stderr_logging( |
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absl::LogSeverityAtLeast::kInfinity); |
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absl::log_internal::ScopedMinLogLevel scoped_min_log_level( |
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absl::LogSeverityAtLeast::kInfinity); |
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for (auto _ : state) { |
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LOG(INFO); |
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} |
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} |
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BENCHMARK(BM_DisabledLogOverhead); |
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static void BM_EnabledLogOverhead(benchmark::State& state) { |
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absl::ScopedStderrThreshold stderr_logging( |
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absl::LogSeverityAtLeast::kInfinity); |
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absl::log_internal::ScopedMinLogLevel scoped_min_log_level( |
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absl::LogSeverityAtLeast::kInfo); |
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ABSL_ATTRIBUTE_UNUSED NullLogSink null_sink; |
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for (auto _ : state) { |
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LOG(INFO); |
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} |
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} |
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BENCHMARK(BM_EnabledLogOverhead); |
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} // namespace |
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