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/**
* Copyright (C) 2018-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/util/decimal_counter.h"
#include "mongo/util/itoa.h"
namespace mongo {
namespace {
auto nonzeroStart = std::numeric_limits<uint32_t>::max() / 2;
} // namespace
void BM_decimalCounterPreInc(benchmark::State& state) {
uint64_t items = 0;
for (auto _ : state) {
DecimalCounter<uint32_t> count(state.range(1));
for (int i = state.range(0); i--;) {
benchmark::ClobberMemory();
benchmark::DoNotOptimize(StringData(++count));
}
items += state.range(0);
}
state.SetItemsProcessed(items);
}
void BM_decimalCounterPostInc(benchmark::State& state) {
uint64_t items = 0;
for (auto _ : state) {
DecimalCounter<uint32_t> count(state.range(1));
for (int i = state.range(0); i--;) {
benchmark::ClobberMemory();
benchmark::DoNotOptimize(StringData(count++));
}
items += state.range(0);
}
state.SetItemsProcessed(items);
}
void BM_ItoACounter(benchmark::State& state) {
uint64_t items = 0;
for (auto _ : state) {
uint32_t count = state.range(1);
for (int i = state.range(0); i--;) {
benchmark::ClobberMemory();
benchmark::DoNotOptimize(StringData(ItoA(++count)));
}
items += state.range(0);
}
state.SetItemsProcessed(items);
}
void BM_ToStringCounter(benchmark::State& state) {
uint64_t items = 0;
for (auto _ : state) {
uint32_t count = state.range(1);
for (int i = state.range(0); i--;) {
benchmark::ClobberMemory();
benchmark::DoNotOptimize(std::to_string(++count));
}
items += state.range(0);
}
state.SetItemsProcessed(items);
}
BENCHMARK(BM_decimalCounterPreInc)->Args({10000, 0})->Args({{10, nonzeroStart}});
BENCHMARK(BM_decimalCounterPostInc)->Args({10000, 0})->Args({{10, nonzeroStart}});
BENCHMARK(BM_ItoACounter)->Args({10000, 0})->Args({{10, nonzeroStart}});
BENCHMARK(BM_ToStringCounter)->Args({10000, 0})->Args({{10, nonzeroStart}});
} // namespace mongo
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