// | |
// detail/posix_fd_set_adapter.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_POSIX_FD_SET_ADAPTER_HPP | |
#define BOOST_ASIO_DETAIL_POSIX_FD_SET_ADAPTER_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) && !defined(__CYGWIN__) | |
#include <cstring> | |
#include <boost/asio/detail/socket_types.hpp> | |
#include <boost/asio/detail/push_options.hpp> | |
namespace boost { | |
namespace asio { | |
namespace detail { | |
// Adapts the FD_SET type to meet the Descriptor_Set concept's requirements. | |
class posix_fd_set_adapter | |
{ | |
public: | |
posix_fd_set_adapter() | |
: max_descriptor_(invalid_socket) | |
{ | |
using namespace std; // Needed for memset on Solaris. | |
FD_ZERO(&fd_set_); | |
} | |
bool set(socket_type descriptor) | |
{ | |
if (descriptor < (socket_type)FD_SETSIZE) | |
{ | |
if (max_descriptor_ == invalid_socket || descriptor > max_descriptor_) | |
max_descriptor_ = descriptor; | |
FD_SET(descriptor, &fd_set_); | |
return true; | |
} | |
return false; | |
} | |
bool is_set(socket_type descriptor) const | |
{ | |
return FD_ISSET(descriptor, &fd_set_) != 0; | |
} | |
operator fd_set*() | |
{ | |
return &fd_set_; | |
} | |
socket_type max_descriptor() const | |
{ | |
return max_descriptor_; | |
} | |
private: | |
mutable fd_set fd_set_; | |
socket_type max_descriptor_; | |
}; | |
} // namespace detail | |
} // namespace asio | |
} // namespace boost | |
#include <boost/asio/detail/pop_options.hpp> | |
#endif // !defined(BOOST_WINDOWS) && !defined(__CYGWIN__) | |
#endif // BOOST_ASIO_DETAIL_POSIX_FD_SET_ADAPTER_HPP |