spdlog/include/spdlog/details/null_mutex.h

//
// Copyright(c) 2015 Gabi Melman.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//

#pragma once

#include <atomic>
// null, no cost dummy "mutex" and dummy "atomic" int

namespace spdlog
{
namespace details
{
struct null_mutex
{
    void lock() {}
    void unlock() {}
    bool try_lock()
    {
        return true;
    }
};

struct null_atomic_int
{
	int value;
	null_atomic_int() = default;

	null_atomic_int(int val):value(val)
	{}

	int load(std::memory_order) const
	{
		return value;
	}

	void store(int val)
	{
		value = val;
	}						
};

}
}