invocation_context_registry.h

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/*
 * Copyright 2023 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 <memory>
 
#include "stat_bench/benchmark_condition.h"
#include "stat_bench/invocation_context.h"
 
namespace stat_bench {
namespace bench_impl {

class InvocationContextRegistry {
public:
    static auto instance() -> InvocationContextRegistry&;

    auto create(BenchmarkCondition cond, std::size_t iterations,
        std::size_t samples, std::size_t warming_up_samples)
        -> InvocationContext&;

    void clear() noexcept;

    [[nodiscard]] auto get() const -> InvocationContext&;
 
    InvocationContextRegistry(const InvocationContextRegistry&) = delete;
    InvocationContextRegistry(InvocationContextRegistry&&) = delete;
    auto operator=(const InvocationContextRegistry&) = delete;
    auto operator=(InvocationContextRegistry&&) = delete;
 
private:
    InvocationContextRegistry();

    ~InvocationContextRegistry() = default;

    std::unique_ptr<InvocationContext> context_;
};
 
}  // namespace bench_impl
}  // namespace stat_bench