summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat (limited to '3rdParty/Boost/src/boost/asio/detail/impl/select_reactor.ipp')
-rw-r--r--3rdParty/Boost/src/boost/asio/detail/impl/select_reactor.ipp275
1 files changed, 275 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/asio/detail/impl/select_reactor.ipp b/3rdParty/Boost/src/boost/asio/detail/impl/select_reactor.ipp
new file mode 100644
index 0000000..af6e6c1
--- /dev/null
+++ b/3rdParty/Boost/src/boost/asio/detail/impl/select_reactor.ipp
@@ -0,0 +1,275 @@
+//
+// detail/impl/select_reactor.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_SELECT_REACTOR_IPP
+#define BOOST_ASIO_DETAIL_IMPL_SELECT_REACTOR_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_ASIO_HAS_IOCP) \
+ || (!defined(BOOST_ASIO_HAS_DEV_POLL) \
+ && !defined(BOOST_ASIO_HAS_EPOLL) \
+ && !defined(BOOST_ASIO_HAS_KQUEUE))
+
+#include <boost/asio/detail/bind_handler.hpp>
+#include <boost/asio/detail/fd_set_adapter.hpp>
+#include <boost/asio/detail/select_reactor.hpp>
+#include <boost/asio/detail/signal_blocker.hpp>
+#include <boost/asio/detail/socket_ops.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+
+select_reactor::select_reactor(boost::asio::io_service& io_service)
+ : boost::asio::detail::service_base<select_reactor>(io_service),
+ io_service_(use_service<io_service_impl>(io_service)),
+ mutex_(),
+ interrupter_(),
+#if defined(BOOST_ASIO_HAS_IOCP)
+ stop_thread_(false),
+ thread_(0),
+#endif // defined(BOOST_ASIO_HAS_IOCP)
+ shutdown_(false)
+{
+#if defined(BOOST_ASIO_HAS_IOCP)
+ boost::asio::detail::signal_blocker sb;
+ thread_ = new boost::asio::detail::thread(
+ bind_handler(&select_reactor::call_run_thread, this));
+#endif // defined(BOOST_ASIO_HAS_IOCP)
+}
+
+select_reactor::~select_reactor()
+{
+ shutdown_service();
+}
+
+void select_reactor::shutdown_service()
+{
+ boost::asio::detail::mutex::scoped_lock lock(mutex_);
+ shutdown_ = true;
+#if defined(BOOST_ASIO_HAS_IOCP)
+ stop_thread_ = true;
+#endif // defined(BOOST_ASIO_HAS_IOCP)
+ lock.unlock();
+
+#if defined(BOOST_ASIO_HAS_IOCP)
+ if (thread_)
+ {
+ interrupter_.interrupt();
+ thread_->join();
+ delete thread_;
+ thread_ = 0;
+ }
+#endif // defined(BOOST_ASIO_HAS_IOCP)
+
+ op_queue<operation> ops;
+
+ for (int i = 0; i < max_ops; ++i)
+ op_queue_[i].get_all_operations(ops);
+
+ timer_queues_.get_all_timers(ops);
+}
+
+void select_reactor::init_task()
+{
+ io_service_.init_task();
+}
+
+int select_reactor::register_descriptor(socket_type,
+ select_reactor::per_descriptor_data&)
+{
+ return 0;
+}
+
+void select_reactor::start_op(int op_type, socket_type descriptor,
+ select_reactor::per_descriptor_data&, reactor_op* op, bool)
+{
+ boost::asio::detail::mutex::scoped_lock lock(mutex_);
+
+ if (shutdown_)
+ {
+ post_immediate_completion(op);
+ return;
+ }
+
+ bool first = op_queue_[op_type].enqueue_operation(descriptor, op);
+ io_service_.work_started();
+ if (first)
+ interrupter_.interrupt();
+}
+
+void select_reactor::cancel_ops(socket_type descriptor,
+ select_reactor::per_descriptor_data&)
+{
+ boost::asio::detail::mutex::scoped_lock lock(mutex_);
+ cancel_ops_unlocked(descriptor, boost::asio::error::operation_aborted);
+}
+
+void select_reactor::close_descriptor(socket_type descriptor,
+ select_reactor::per_descriptor_data&)
+{
+ boost::asio::detail::mutex::scoped_lock lock(mutex_);
+ cancel_ops_unlocked(descriptor, boost::asio::error::operation_aborted);
+}
+
+void select_reactor::run(bool block, op_queue<operation>& ops)
+{
+ boost::asio::detail::mutex::scoped_lock lock(mutex_);
+
+#if defined(BOOST_ASIO_HAS_IOCP)
+ // Check if the thread is supposed to stop.
+ if (stop_thread_)
+ return;
+#endif // defined(BOOST_ASIO_HAS_IOCP)
+
+ // Set up the descriptor sets.
+ fd_set_adapter fds[max_select_ops];
+ fds[read_op].set(interrupter_.read_descriptor());
+ socket_type max_fd = 0;
+ bool have_work_to_do = !timer_queues_.all_empty();
+ for (int i = 0; i < max_select_ops; ++i)
+ {
+ have_work_to_do = have_work_to_do || !op_queue_[i].empty();
+ op_queue_[i].get_descriptors(fds[i], ops);
+ if (fds[i].max_descriptor() > max_fd)
+ max_fd = fds[i].max_descriptor();
+ }
+
+#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
+ // Connection operations on Windows use both except and write fd_sets.
+ have_work_to_do = have_work_to_do || !op_queue_[connect_op].empty();
+ op_queue_[connect_op].get_descriptors(fds[write_op], ops);
+ if (fds[write_op].max_descriptor() > max_fd)
+ max_fd = fds[write_op].max_descriptor();
+ op_queue_[connect_op].get_descriptors(fds[except_op], ops);
+ if (fds[except_op].max_descriptor() > max_fd)
+ max_fd = fds[except_op].max_descriptor();
+#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
+
+ // We can return immediately if there's no work to do and the reactor is
+ // not supposed to block.
+ if (!block && !have_work_to_do)
+ return;
+
+ // Determine how long to block while waiting for events.
+ timeval tv_buf = { 0, 0 };
+ timeval* tv = block ? get_timeout(tv_buf) : &tv_buf;
+
+ lock.unlock();
+
+ // Block on the select call until descriptors become ready.
+ boost::system::error_code ec;
+ int retval = socket_ops::select(static_cast<int>(max_fd + 1),
+ fds[read_op], fds[write_op], fds[except_op], tv, ec);
+
+ // Reset the interrupter.
+ if (retval > 0 && fds[read_op].is_set(interrupter_.read_descriptor()))
+ interrupter_.reset();
+
+ lock.lock();
+
+ // Dispatch all ready operations.
+ if (retval > 0)
+ {
+#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
+ // Connection operations on Windows use both except and write fd_sets.
+ op_queue_[connect_op].perform_operations_for_descriptors(
+ fds[except_op], ops);
+ op_queue_[connect_op].perform_operations_for_descriptors(
+ fds[write_op], ops);
+#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
+
+ // Exception operations must be processed first to ensure that any
+ // out-of-band data is read before normal data.
+ for (int i = max_select_ops - 1; i >= 0; --i)
+ op_queue_[i].perform_operations_for_descriptors(fds[i], ops);
+ }
+ timer_queues_.get_ready_timers(ops);
+}
+
+void select_reactor::interrupt()
+{
+ interrupter_.interrupt();
+}
+
+#if defined(BOOST_ASIO_HAS_IOCP)
+void select_reactor::run_thread()
+{
+ boost::asio::detail::mutex::scoped_lock lock(mutex_);
+ while (!stop_thread_)
+ {
+ lock.unlock();
+ op_queue<operation> ops;
+ run(true, ops);
+ io_service_.post_deferred_completions(ops);
+ lock.lock();
+ }
+}
+
+void select_reactor::call_run_thread(select_reactor* reactor)
+{
+ reactor->run_thread();
+}
+#endif // defined(BOOST_ASIO_HAS_IOCP)
+
+void select_reactor::do_add_timer_queue(timer_queue_base& queue)
+{
+ mutex::scoped_lock lock(mutex_);
+ timer_queues_.insert(&queue);
+}
+
+void select_reactor::do_remove_timer_queue(timer_queue_base& queue)
+{
+ mutex::scoped_lock lock(mutex_);
+ timer_queues_.erase(&queue);
+}
+
+timeval* select_reactor::get_timeout(timeval& tv)
+{
+ // By default we will wait no longer than 5 minutes. This will ensure that
+ // any changes to the system clock are detected after no longer than this.
+ long usec = timer_queues_.wait_duration_usec(5 * 60 * 1000 * 1000);
+ tv.tv_sec = usec / 1000000;
+ tv.tv_usec = usec % 1000000;
+ return &tv;
+}
+
+void select_reactor::cancel_ops_unlocked(socket_type descriptor,
+ const boost::system::error_code& ec)
+{
+ bool need_interrupt = false;
+ op_queue<operation> ops;
+ for (int i = 0; i < max_ops; ++i)
+ need_interrupt = op_queue_[i].cancel_operations(
+ descriptor, ops, ec) || need_interrupt;
+ io_service_.post_deferred_completions(ops);
+ if (need_interrupt)
+ interrupter_.interrupt();
+}
+
+} // namespace detail
+} // namespace asio
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // defined(BOOST_ASIO_HAS_IOCP)
+ // || (!defined(BOOST_ASIO_HAS_DEV_POLL)
+ // && !defined(BOOST_ASIO_HAS_EPOLL)
+ // && !defined(BOOST_ASIO_HAS_KQUEUE))
+
+#endif // BOOST_ASIO_DETAIL_IMPL_SELECT_REACTOR_IPP