boost/fiber/detail/fss.hpp

//          Copyright Oliver Kowalke 2013.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)
//
//          based on tss.hpp from boost.thread
#ifndef BOOST_FIBERS_DETAIL_FSS_H
#define BOOST_FIBERS_DETAIL_FSS_H
#include <atomic>
#include <cstddef>
#include <boost/config.hpp>
#include <boost/intrusive_ptr.hpp>
#ifdef BOOST_HAS_ABI_HEADERS
#  include BOOST_ABI_PREFIX
#endif
namespace boost {
namespace fibers {
namespace detail {
class fss_cleanup_function {
private:
    std::atomic< std::size_t >  use_count_{ 0 };
public:
    typedef intrusive_ptr< fss_cleanup_function >   ptr_t;
    fss_cleanup_function() noexcept = default;
    virtual ~fss_cleanup_function() = default;
    virtual void operator()( void * data) = 0;
    friend inline
    void intrusive_ptr_add_ref( fss_cleanup_function * p) noexcept {
        ++p->use_count_;
    }
    friend inline
    void intrusive_ptr_release( fss_cleanup_function * p) noexcept {
        if ( --p->use_count_ == 0) {
            delete p;
        }
    }
};
}}}
#ifdef BOOST_HAS_ABI_HEADERS
#  include BOOST_ABI_SUFFIX
#endif
#endif //  BOOST_FIBERS_DETAIL_FSS_H