pool_data.hpp

Go to the documentation of this file.

// SPDX-License-Identifier: BSD-3-Clause
/* Copyright 2019, Intel Corporation */
 
#ifndef LIBPMEMOBJ_CPP_POOL_DATA_HPP
#define LIBPMEMOBJ_CPP_POOL_DATA_HPP
 
#include <atomic>
#include <functional>
 
namespace pmem
{
 
namespace detail
{
 
struct pool_data {
    pool_data()
    {
        initialized = false;
    }
 
    /* Set cleanup function if not already set */
    void
    set_cleanup(std::function<void()> cleanup)
    {
        bool expected = false;
 
        /* this is only to protect from concurrent initializations,
         * there will be no concurrent reads */
        if (initialized.compare_exchange_strong(
                expected, true, std::memory_order_release,
                std::memory_order_relaxed)) {
            this->cleanup = cleanup;
        }
    }
 
    std::atomic<bool> initialized;
    std::function<void()> cleanup;
};
 
} /* namespace detail */
 
} /* namespace pmem */
 
#endif /* LIBPMEMOBJ_CPP_POOL_DATA_HPP */