119 lines
2.8 KiB
C++
119 lines
2.8 KiB
C++
//
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// detail/posix_fd_set_adapter.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_DETAIL_POSIX_FD_SET_ADAPTER_HPP
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#define ASIO_DETAIL_POSIX_FD_SET_ADAPTER_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/config.hpp"
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#if !defined(ASIO_WINDOWS) \
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&& !defined(__CYGWIN__) \
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&& !defined(ASIO_WINDOWS_RUNTIME)
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#include <cstring>
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#include "asio/detail/noncopyable.hpp"
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#include "asio/detail/reactor_op_queue.hpp"
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#include "asio/detail/socket_types.hpp"
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#include "asio/detail/push_options.hpp"
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namespace asio {
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namespace detail {
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// Adapts the FD_SET type to meet the Descriptor_Set concept's requirements.
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class posix_fd_set_adapter : noncopyable
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{
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public:
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posix_fd_set_adapter()
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: max_descriptor_(invalid_socket)
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{
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using namespace std; // Needed for memset on Solaris.
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FD_ZERO(&fd_set_);
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}
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void reset()
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{
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using namespace std; // Needed for memset on Solaris.
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FD_ZERO(&fd_set_);
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}
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bool set(socket_type descriptor)
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{
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if (descriptor < (socket_type)FD_SETSIZE)
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{
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if (max_descriptor_ == invalid_socket || descriptor > max_descriptor_)
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max_descriptor_ = descriptor;
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FD_SET(descriptor, &fd_set_);
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return true;
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}
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return false;
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}
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void set(reactor_op_queue<socket_type>& operations, op_queue<operation>& ops)
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{
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reactor_op_queue<socket_type>::iterator i = operations.begin();
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while (i != operations.end())
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{
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reactor_op_queue<socket_type>::iterator op_iter = i++;
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if (!set(op_iter->first))
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{
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asio::error_code ec(error::fd_set_failure);
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operations.cancel_operations(op_iter, ops, ec);
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}
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}
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}
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bool is_set(socket_type descriptor) const
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{
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return FD_ISSET(descriptor, &fd_set_) != 0;
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}
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operator fd_set*()
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{
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return &fd_set_;
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}
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socket_type max_descriptor() const
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{
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return max_descriptor_;
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}
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void perform(reactor_op_queue<socket_type>& operations,
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op_queue<operation>& ops) const
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{
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reactor_op_queue<socket_type>::iterator i = operations.begin();
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while (i != operations.end())
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{
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reactor_op_queue<socket_type>::iterator op_iter = i++;
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if (is_set(op_iter->first))
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operations.perform_operations(op_iter, ops);
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}
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}
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private:
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mutable fd_set fd_set_;
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socket_type max_descriptor_;
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};
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} // namespace detail
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#endif // !defined(ASIO_WINDOWS)
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// && !defined(__CYGWIN__)
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// && !defined(ASIO_WINDOWS_RUNTIME)
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#endif // ASIO_DETAIL_POSIX_FD_SET_ADAPTER_HPP
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