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Diffstat (limited to '3rdParty/Boost/src/boost/asio/detail/impl/pipe_select_interrupter.ipp')
-rw-r--r-- | 3rdParty/Boost/src/boost/asio/detail/impl/pipe_select_interrupter.ipp | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/asio/detail/impl/pipe_select_interrupter.ipp b/3rdParty/Boost/src/boost/asio/detail/impl/pipe_select_interrupter.ipp new file mode 100644 index 0000000..f2a7291 --- /dev/null +++ b/3rdParty/Boost/src/boost/asio/detail/impl/pipe_select_interrupter.ipp @@ -0,0 +1,98 @@ +// +// detail/impl/pipe_select_interrupter.ipp +// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2010 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_IMPL_PIPE_SELECT_INTERRUPTER_IPP +#define BOOST_ASIO_DETAIL_IMPL_PIPE_SELECT_INTERRUPTER_IPP + +#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) +#if !defined(__CYGWIN__) +#if !defined(__SYMBIAN32__) +#if !defined(BOOST_ASIO_HAS_EVENTFD) + +#include <fcntl.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> +#include <boost/asio/detail/pipe_select_interrupter.hpp> +#include <boost/asio/detail/throw_error.hpp> +#include <boost/asio/error.hpp> + +#include <boost/asio/detail/push_options.hpp> + +namespace boost { +namespace asio { +namespace detail { + +pipe_select_interrupter::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::asio::detail::throw_error(ec, "pipe_select_interrupter"); + } +} + +pipe_select_interrupter::~pipe_select_interrupter() +{ + if (read_descriptor_ != -1) + ::close(read_descriptor_); + if (write_descriptor_ != -1) + ::close(write_descriptor_); +} + +void pipe_select_interrupter::interrupt() +{ + char byte = 0; + int result = ::write(write_descriptor_, &byte, 1); + (void)result; +} + +bool pipe_select_interrupter::reset() +{ + for (;;) + { + char data[1024]; + int bytes_read = ::read(read_descriptor_, data, sizeof(data)); + if (bytes_read < 0 && errno == EINTR) + continue; + bool was_interrupted = (bytes_read > 0); + while (bytes_read == sizeof(data)) + bytes_read = ::read(read_descriptor_, data, sizeof(data)); + return was_interrupted; + } +} + +} // namespace detail +} // namespace asio +} // namespace boost + +#include <boost/asio/detail/pop_options.hpp> + +#endif // !defined(BOOST_ASIO_HAS_EVENTFD) +#endif // !defined(__SYMBIAN32__) +#endif // !defined(__CYGWIN__) +#endif // !defined(BOOST_WINDOWS) + +#endif // BOOST_ASIO_DETAIL_IMPL_PIPE_SELECT_INTERRUPTER_IPP |