Swiftdiff options
| author | Remko Tronçon <git@el-tramo.be> | 2010-03-28 15:46:49 (GMT) |
|---|---|---|
| committer | Remko Tronçon <git@el-tramo.be> | 2010-03-28 15:46:49 (GMT) |
| commit | f53a1ef582494458301b97bf6e546be52d7ff7e8 (patch) | |
| tree | 7571b5cbcbd8a8f1dd1c966c9045b6cb69f0e295 /3rdParty/Boost/src/boost/asio/detail/pipe_select_interrupter.hpp | |
| parent | 638345680d72ca6acaf123f2c8c1c391f696e371 (diff) | |
| download | swift-f53a1ef582494458301b97bf6e546be52d7ff7e8.zip swift-f53a1ef582494458301b97bf6e546be52d7ff7e8.tar.bz2 | |
Moving submodule contents back.
Diffstat (limited to '3rdParty/Boost/src/boost/asio/detail/pipe_select_interrupter.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/asio/detail/pipe_select_interrupter.hpp | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/asio/detail/pipe_select_interrupter.hpp b/3rdParty/Boost/src/boost/asio/detail/pipe_select_interrupter.hpp new file mode 100644 index 0000000..51b8c02 --- /dev/null +++ b/3rdParty/Boost/src/boost/asio/detail/pipe_select_interrupter.hpp @@ -0,0 +1,117 @@ +// +// pipe_select_interrupter.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_PIPE_SELECT_INTERRUPTER_HPP +#define BOOST_ASIO_DETAIL_PIPE_SELECT_INTERRUPTER_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 <boost/config.hpp> +#include <boost/throw_exception.hpp> +#include <boost/system/system_error.hpp> +#include <boost/asio/detail/pop_options.hpp> + +#if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__) + +#include <boost/asio/detail/push_options.hpp> +#include <fcntl.h> +#include <boost/asio/detail/pop_options.hpp> + +#include <boost/asio/error.hpp> +#include <boost/asio/detail/socket_types.hpp> + +namespace boost { +namespace asio { +namespace detail { + +class pipe_select_interrupter +{ +public: + // Constructor. + pipe_select_interrupter() + { + int pipe_fds[2]; + if (pipe(pipe_fds) == 0) + { + read_descriptor_ = pipe_fds[0]; + ::fcntl(read_descriptor_, F_SETFL, O_NONBLOCK); + write_descriptor_ = pipe_fds[1]; + ::fcntl(write_descriptor_, F_SETFL, O_NONBLOCK); + } + else + { + boost::system::error_code ec(errno, + boost::asio::error::get_system_category()); + boost::system::system_error e(ec, "pipe_select_interrupter"); + boost::throw_exception(e); + } + } + + // Destructor. + ~pipe_select_interrupter() + { + if (read_descriptor_ != -1) + ::close(read_descriptor_); + if (write_descriptor_ != -1) + ::close(write_descriptor_); + } + + // Interrupt the select call. + void interrupt() + { + char byte = 0; + int result = ::write(write_descriptor_, &byte, 1); + (void)result; + } + + // Reset the select interrupt. Returns true if the call was interrupted. + bool reset() + { + char data[1024]; + int bytes_read = ::read(read_descriptor_, data, sizeof(data)); + bool was_interrupted = (bytes_read > 0); + while (bytes_read == sizeof(data)) + bytes_read = ::read(read_descriptor_, data, sizeof(data)); + return was_interrupted; + } + + // Get the read descriptor to be passed to select. + int read_descriptor() const + { + return read_descriptor_; + } + +private: + // The read end of a connection used to interrupt the select call. This file + // descriptor is passed to select such that when it is time to stop, a single + // byte will be written on the other end of the connection and this + // descriptor will become readable. + int read_descriptor_; + + // The write end of a connection used to interrupt the select call. A single + // byte may be written to this to wake up the select which is waiting for the + // other end to become readable. + int write_descriptor_; +}; + +} // namespace detail +} // namespace asio +} // namespace boost + +#endif // !defined(BOOST_WINDOWS) && !defined(__CYGWIN__) + +#include <boost/asio/detail/pop_options.hpp> + +#endif // BOOST_ASIO_DETAIL_PIPE_SELECT_INTERRUPTER_HPP |