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/**
* Copyright (C) 2021-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include <benchmark/benchmark.h>
#include "mongo/platform/atomic_word.h"
#include "mongo/platform/compiler.h"
#include "mongo/util/fail_point.h"
namespace mongo {
namespace {
MONGO_FAIL_POINT_DEFINE(failPointBench);
AtomicWord<bool> atomic;
void BM_AtomicLoadAndBranch(benchmark::State& state) {
atomic.store(!!state.range(0));
for (auto _ : state) {
if (MONGO_unlikely(atomic.load())) {
benchmark::DoNotOptimize(0);
}
}
}
BENCHMARK(BM_AtomicLoadAndBranch)->Range(0, 1);
void BM_FailPointShouldFail(benchmark::State& state) {
failPointBench.setMode(state.range(0) ? FailPoint::alwaysOn : FailPoint::off);
for (auto _ : state) {
if (MONGO_unlikely(failPointBench.shouldFail())) {
benchmark::DoNotOptimize(0);
}
}
failPointBench.setMode(FailPoint::off);
}
BENCHMARK(BM_FailPointShouldFail)->Range(0, 1);
void BM_FailPointExecute(benchmark::State& state) {
failPointBench.setMode(state.range(0) ? FailPoint::alwaysOn : FailPoint::off);
for (auto _ : state)
failPointBench.execute([](auto&&) { benchmark::DoNotOptimize(0); });
failPointBench.setMode(FailPoint::off);
}
BENCHMARK(BM_FailPointExecute)->Range(0, 1);
void BM_FailPointExecuteIf(benchmark::State& state) {
failPointBench.setMode(state.range(0) ? FailPoint::alwaysOn : FailPoint::off);
for (auto _ : state)
failPointBench.executeIf([](auto&&) { benchmark::DoNotOptimize(0); }, nullptr);
failPointBench.setMode(FailPoint::off);
}
BENCHMARK(BM_FailPointExecuteIf)->Range(0, 1);
void BM_FailPointScoped(benchmark::State& state) {
failPointBench.setMode(state.range(0) ? FailPoint::alwaysOn : FailPoint::off);
for (auto _ : state) {
auto scoped = failPointBench.scoped();
if (MONGO_unlikely(scoped.isActive()))
benchmark::DoNotOptimize(0);
}
failPointBench.setMode(FailPoint::off);
}
BENCHMARK(BM_FailPointScoped)->Range(0, 1);
void BM_FailPointScopedIf(benchmark::State& state) {
failPointBench.setMode(state.range(0) ? FailPoint::alwaysOn : FailPoint::off);
for (auto _ : state) {
auto scoped = failPointBench.scopedIf([](auto&&) { return false; });
if (MONGO_unlikely(scoped.isActive()))
benchmark::DoNotOptimize(0);
}
failPointBench.setMode(FailPoint::off);
}
BENCHMARK(BM_FailPointScopedIf)->Range(0, 1);
} // namespace
} // namespace mongo
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