/usr/include/boost/asio/detail
Edit: /usr/include/boost/asio/detail/socket_option.hpp (6410B)
//
// detail/socket_option.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2020 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
#include
#include
#include
#include
#include
namespace boost {
namespace asio {
namespace detail {
namespace socket_option {
// Helper template for implementing boolean-based options.
template
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
int level(const Protocol&) const
{
return Level;
}
// Get the name of the socket option.
template
int name(const Protocol&) const
{
return Name;
}
// Get the address of the boolean data.
template
int* data(const Protocol&)
{
return &value_;
}
// Get the address of the boolean data.
template
const int* data(const Protocol&) const
{
return &value_;
}
// Get the size of the boolean data.
template
std::size_t size(const Protocol&) const
{
return sizeof(value_);
}
// Set the size of the boolean data.
template
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(&value_) ? 1 : 0;
break;
case sizeof(value_):
break;
default:
{
std::length_error ex("boolean socket option resize");
boost::asio::detail::throw_exception(ex);
}
}
}
private:
int value_;
};
// Helper template for implementing integer options.
template
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
int level(const Protocol&) const
{
return Level;
}
// Get the name of the socket option.
template
int name(const Protocol&) const
{
return Name;
}
// Get the address of the int data.
template
int* data(const Protocol&)
{
return &value_;
}
// Get the address of the int data.
template
const int* data(const Protocol&) const
{
return &value_;
}
// Get the size of the int data.
template
std::size_t size(const Protocol&) const
{
return sizeof(value_);
}
// Set the size of the int data.
template
void resize(const Protocol&, std::size_t s)
{
if (s != sizeof(value_))
{
std::length_error ex("integer socket option resize");
boost::asio::detail::throw_exception(ex);
}
}
private:
int value_;
};
// Helper template for implementing linger options.
template
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_ASIO_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_ASIO_PREVENT_MACRO_SUBSTITUTION(int value)
{
#if defined(WIN32)
value_.l_linger = static_cast(value);
#else
value_.l_linger = value;
#endif
}
// Get the value for the linger timeout.
int timeout BOOST_ASIO_PREVENT_MACRO_SUBSTITUTION() const
{
return static_cast(value_.l_linger);
}
// Get the level of the socket option.
template
int level(const Protocol&) const
{
return Level;
}
// Get the name of the socket option.
template
int name(const Protocol&) const
{
return Name;
}
// Get the address of the linger data.
template
detail::linger_type* data(const Protocol&)
{
return &value_;
}
// Get the address of the linger data.
template
const detail::linger_type* data(const Protocol&) const
{
return &value_;
}
// Get the size of the linger data.
template
std::size_t size(const Protocol&) const
{
return sizeof(value_);
}
// Set the size of the int data.
template
void resize(const Protocol&, std::size_t s)
{
if (s != sizeof(value_))
{
std::length_error ex("linger socket option resize");
boost::asio::detail::throw_exception(ex);
}
}
private:
detail::linger_type value_;
};
} // namespace socket_option
} // namespace detail
} // namespace asio
} // namespace boost
#include
#endif // BOOST_ASIO_DETAIL_SOCKET_OPTION_HPP