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authorRemko Tronçon <git@el-tramo.be>2009-06-01 08:48:42 (GMT)
committerRemko Tronçon <git@el-tramo.be>2009-06-01 09:24:28 (GMT)
commit2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch)
treed46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/asio/detail/socket_option.hpp
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+//
+// socket_option.hpp
+// ~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2008 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_SOCKET_OPTION_HPP
+#define BOOST_ASIO_DETAIL_SOCKET_OPTION_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/push_options.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+#include <cstddef>
+#include <stdexcept>
+#include <boost/config.hpp>
+#include <boost/asio/detail/pop_options.hpp>
+
+#include <boost/asio/detail/socket_types.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+namespace socket_option {
+
+// Helper template for implementing boolean-based options.
+template <int Level, int Name>
+class boolean
+{
+public:
+ // Default constructor.
+ boolean()
+ : value_(0)
+ {
+ }
+
+ // Construct with a specific option value.
+ explicit boolean(bool v)
+ : value_(v ? 1 : 0)
+ {
+ }
+
+ // Set the current value of the boolean.
+ boolean& operator=(bool v)
+ {
+ value_ = v ? 1 : 0;
+ return *this;
+ }
+
+ // Get the current value of the boolean.
+ bool value() const
+ {
+ return !!value_;
+ }
+
+ // Convert to bool.
+ operator bool() const
+ {
+ return !!value_;
+ }
+
+ // Test for false.
+ bool operator!() const
+ {
+ return !value_;
+ }
+
+ // Get the level of the socket option.
+ template <typename Protocol>
+ int level(const Protocol&) const
+ {
+ return Level;
+ }
+
+ // Get the name of the socket option.
+ template <typename Protocol>
+ int name(const Protocol&) const
+ {
+ return Name;
+ }
+
+ // Get the address of the boolean data.
+ template <typename Protocol>
+ int* data(const Protocol&)
+ {
+ return &value_;
+ }
+
+ // Get the address of the boolean data.
+ template <typename Protocol>
+ const int* data(const Protocol&) const
+ {
+ return &value_;
+ }
+
+ // Get the size of the boolean data.
+ template <typename Protocol>
+ std::size_t size(const Protocol&) const
+ {
+ return sizeof(value_);
+ }
+
+ // Set the size of the boolean data.
+ template <typename Protocol>
+ void resize(const Protocol&, std::size_t s)
+ {
+ // On some platforms (e.g. Windows Vista), the getsockopt function will
+ // return the size of a boolean socket option as one byte, even though a
+ // four byte integer was passed in.
+ switch (s)
+ {
+ case sizeof(char):
+ value_ = *reinterpret_cast<char*>(&value_) ? 1 : 0;
+ break;
+ case sizeof(value_):
+ break;
+ default:
+ throw std::length_error("boolean socket option resize");
+ }
+ }
+
+private:
+ int value_;
+};
+
+// Helper template for implementing integer options.
+template <int Level, int Name>
+class integer
+{
+public:
+ // Default constructor.
+ integer()
+ : value_(0)
+ {
+ }
+
+ // Construct with a specific option value.
+ explicit integer(int v)
+ : value_(v)
+ {
+ }
+
+ // Set the value of the int option.
+ integer& operator=(int v)
+ {
+ value_ = v;
+ return *this;
+ }
+
+ // Get the current value of the int option.
+ int value() const
+ {
+ return value_;
+ }
+
+ // Get the level of the socket option.
+ template <typename Protocol>
+ int level(const Protocol&) const
+ {
+ return Level;
+ }
+
+ // Get the name of the socket option.
+ template <typename Protocol>
+ int name(const Protocol&) const
+ {
+ return Name;
+ }
+
+ // Get the address of the int data.
+ template <typename Protocol>
+ int* data(const Protocol&)
+ {
+ return &value_;
+ }
+
+ // Get the address of the int data.
+ template <typename Protocol>
+ const int* data(const Protocol&) const
+ {
+ return &value_;
+ }
+
+ // Get the size of the int data.
+ template <typename Protocol>
+ std::size_t size(const Protocol&) const
+ {
+ return sizeof(value_);
+ }
+
+ // Set the size of the int data.
+ template <typename Protocol>
+ void resize(const Protocol&, std::size_t s)
+ {
+ if (s != sizeof(value_))
+ throw std::length_error("integer socket option resize");
+ }
+
+private:
+ int value_;
+};
+
+// Helper template for implementing linger options.
+template <int Level, int Name>
+class linger
+{
+public:
+ // Default constructor.
+ linger()
+ {
+ value_.l_onoff = 0;
+ value_.l_linger = 0;
+ }
+
+ // Construct with specific option values.
+ linger(bool e, int t)
+ {
+ enabled(e);
+ timeout BOOST_PREVENT_MACRO_SUBSTITUTION(t);
+ }
+
+ // Set the value for whether linger is enabled.
+ void enabled(bool value)
+ {
+ value_.l_onoff = value ? 1 : 0;
+ }
+
+ // Get the value for whether linger is enabled.
+ bool enabled() const
+ {
+ return value_.l_onoff != 0;
+ }
+
+ // Set the value for the linger timeout.
+ void timeout BOOST_PREVENT_MACRO_SUBSTITUTION(int value)
+ {
+#if defined(WIN32)
+ value_.l_linger = static_cast<u_short>(value);
+#else
+ value_.l_linger = value;
+#endif
+ }
+
+ // Get the value for the linger timeout.
+ int timeout BOOST_PREVENT_MACRO_SUBSTITUTION() const
+ {
+ return static_cast<int>(value_.l_linger);
+ }
+
+ // Get the level of the socket option.
+ template <typename Protocol>
+ int level(const Protocol&) const
+ {
+ return Level;
+ }
+
+ // Get the name of the socket option.
+ template <typename Protocol>
+ int name(const Protocol&) const
+ {
+ return Name;
+ }
+
+ // Get the address of the linger data.
+ template <typename Protocol>
+ ::linger* data(const Protocol&)
+ {
+ return &value_;
+ }
+
+ // Get the address of the linger data.
+ template <typename Protocol>
+ const ::linger* data(const Protocol&) const
+ {
+ return &value_;
+ }
+
+ // Get the size of the linger data.
+ template <typename Protocol>
+ std::size_t size(const Protocol&) const
+ {
+ return sizeof(value_);
+ }
+
+ // Set the size of the int data.
+ template <typename Protocol>
+ void resize(const Protocol&, std::size_t s)
+ {
+ if (s != sizeof(value_))
+ throw std::length_error("linger socket option resize");
+ }
+
+private:
+ ::linger value_;
+};
+
+} // namespace socket_option
+} // namespace detail
+} // namespace asio
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // BOOST_ASIO_DETAIL_SOCKET_OPTION_HPP