benchmark_condition.h

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/*
 * Copyright 2021 MusicScience37 (Kenta Kabashima)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#pragma once
 
#include <cstddef>
#include <utility>
 
#include "stat_bench/param/num_threads_parameter_name.h"
#include "stat_bench/param/parameter_dict.h"
 
namespace stat_bench {

class BenchmarkCondition {
public:
    BenchmarkCondition(std::size_t threads, param::ParameterDict params)
        : threads_(threads), params_(std::move(params)) {}

    explicit BenchmarkCondition(const param::ParameterDict& params)
        : BenchmarkCondition(get_threads(params), params) {}

    [[nodiscard]] auto threads() const noexcept -> std::size_t {
        return threads_;
    }

    [[nodiscard]] auto params() const noexcept -> const param::ParameterDict& {
        return params_;
    }
 
private:
    [[nodiscard]] static auto get_threads(const param::ParameterDict& params)
        -> std::size_t {
        if (params.has(param::num_threads_parameter_name())) {
            return params.get<std::size_t>(param::num_threads_parameter_name());
        }
        return static_cast<std::size_t>(1);
    }

    std::size_t threads_;

    param::ParameterDict params_;
};
 
}  // namespace stat_bench