null_mutex.h

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//
// 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;
    }
};
 
}
}