// | |
// detail/win_tss_ptr.hpp | |
// ~~~~~~~~~~~~~~~~~~~~~~ | |
// | |
// Copyright (c) 2003-2011 Christopher M. Kohlhoff (chris at kohlhoff dot com) | |
// | |
// 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) | |
// | |
#ifndef BOOST_ASIO_DETAIL_WIN_TSS_PTR_HPP | |
#define BOOST_ASIO_DETAIL_WIN_TSS_PTR_HPP | |
#if defined(_MSC_VER) && (_MSC_VER >= 1200) | |
# pragma once | |
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) | |
#include <boost/asio/detail/config.hpp> | |
#if defined(BOOST_WINDOWS) | |
#include <boost/asio/detail/noncopyable.hpp> | |
#include <boost/asio/detail/socket_types.hpp> | |
#include <boost/asio/detail/push_options.hpp> | |
namespace boost { | |
namespace asio { | |
namespace detail { | |
// Helper function to create thread-specific storage. | |
BOOST_ASIO_DECL DWORD win_tss_ptr_create(); | |
template <typename T> | |
class win_tss_ptr | |
: private noncopyable | |
{ | |
public: | |
// Constructor. | |
win_tss_ptr() | |
: tss_key_(win_tss_ptr_create()) | |
{ | |
} | |
// Destructor. | |
~win_tss_ptr() | |
{ | |
::TlsFree(tss_key_); | |
} | |
// Get the value. | |
operator T*() const | |
{ | |
return static_cast<T*>(::TlsGetValue(tss_key_)); | |
} | |
// Set the value. | |
void operator=(T* value) | |
{ | |
::TlsSetValue(tss_key_, value); | |
} | |
private: | |
// Thread-specific storage to allow unlocked access to determine whether a | |
// thread is a member of the pool. | |
DWORD tss_key_; | |
}; | |
} // namespace detail | |
} // namespace asio | |
} // namespace boost | |
#include <boost/asio/detail/pop_options.hpp> | |
#if defined(BOOST_ASIO_HEADER_ONLY) | |
# include <boost/asio/detail/impl/win_tss_ptr.ipp> | |
#endif // defined(BOOST_ASIO_HEADER_ONLY) | |
#endif // defined(BOOST_WINDOWS) | |
#endif // BOOST_ASIO_DETAIL_WIN_TSS_PTR_HPP |