|
// 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_.fetch_add( 1, std::memory_order_relaxed);
|
}
|
|
friend inline
|
void intrusive_ptr_release( fss_cleanup_function * p) noexcept {
|
if ( 1 == p->use_count_.fetch_sub( 1, std::memory_order_release) ) {
|
std::atomic_thread_fence( std::memory_order_acquire);
|
delete p;
|
}
|
}
|
};
|
|
}}}
|
|
#ifdef BOOST_HAS_ABI_HEADERS
|
# include BOOST_ABI_SUFFIX
|
#endif
|
|
#endif // BOOST_FIBERS_DETAIL_FSS_H
|
