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Diffstat (limited to '3rdParty/Boost/src/boost/asio/detail/select_reactor.hpp')
-rw-r--r--3rdParty/Boost/src/boost/asio/detail/select_reactor.hpp306
1 files changed, 63 insertions, 243 deletions
diff --git a/3rdParty/Boost/src/boost/asio/detail/select_reactor.hpp b/3rdParty/Boost/src/boost/asio/detail/select_reactor.hpp
index 91030e9..55a819d 100644
--- a/3rdParty/Boost/src/boost/asio/detail/select_reactor.hpp
+++ b/3rdParty/Boost/src/boost/asio/detail/select_reactor.hpp
@@ -1,6 +1,6 @@
//
-// select_reactor.hpp
-// ~~~~~~~~~~~~~~~~~~
+// detail/select_reactor.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2010 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
@@ -15,42 +15,39 @@
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-#include <boost/asio/detail/push_options.hpp>
+#include <boost/asio/detail/config.hpp>
-#include <boost/asio/detail/socket_types.hpp> // Must come before posix_time.
+#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/push_options.hpp>
#include <cstddef>
-#include <boost/config.hpp>
-#include <boost/asio/detail/pop_options.hpp>
-
-#include <boost/asio/io_service.hpp>
-#include <boost/asio/detail/bind_handler.hpp>
-#include <boost/asio/detail/fd_set_adapter.hpp>
#include <boost/asio/detail/mutex.hpp>
-#include <boost/asio/detail/noncopyable.hpp>
#include <boost/asio/detail/op_queue.hpp>
#include <boost/asio/detail/reactor_op.hpp>
#include <boost/asio/detail/reactor_op_queue.hpp>
#include <boost/asio/detail/select_interrupter.hpp>
#include <boost/asio/detail/select_reactor_fwd.hpp>
-#include <boost/asio/detail/service_base.hpp>
-#include <boost/asio/detail/signal_blocker.hpp>
-#include <boost/asio/detail/socket_ops.hpp>
#include <boost/asio/detail/socket_types.hpp>
-#include <boost/asio/detail/thread.hpp>
#include <boost/asio/detail/timer_op.hpp>
#include <boost/asio/detail/timer_queue_base.hpp>
#include <boost/asio/detail/timer_queue_fwd.hpp>
#include <boost/asio/detail/timer_queue_set.hpp>
+#include <boost/asio/io_service.hpp>
+
+#if defined(BOOST_ASIO_HAS_IOCP)
+# include <boost/asio/detail/thread.hpp>
+#endif // defined(BOOST_ASIO_HAS_IOCP)
+
+#include <boost/asio/detail/push_options.hpp>
namespace boost {
namespace asio {
namespace detail {
-template <bool Own_Thread>
class select_reactor
- : public boost::asio::detail::service_base<select_reactor<Own_Thread> >
+ : public boost::asio::detail::service_base<select_reactor>
{
public:
#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
@@ -67,280 +64,91 @@ public:
};
// Constructor.
- select_reactor(boost::asio::io_service& io_service)
- : boost::asio::detail::service_base<
- select_reactor<Own_Thread> >(io_service),
- io_service_(use_service<io_service_impl>(io_service)),
- mutex_(),
- interrupter_(),
- stop_thread_(false),
- thread_(0),
- shutdown_(false)
- {
- if (Own_Thread)
- {
- boost::asio::detail::signal_blocker sb;
- thread_ = new boost::asio::detail::thread(
- bind_handler(&select_reactor::call_run_thread, this));
- }
- }
+ BOOST_ASIO_DECL select_reactor(boost::asio::io_service& io_service);
// Destructor.
- ~select_reactor()
- {
- shutdown_service();
- }
+ BOOST_ASIO_DECL ~select_reactor();
// Destroy all user-defined handler objects owned by the service.
- void shutdown_service()
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- shutdown_ = true;
- stop_thread_ = true;
- lock.unlock();
-
- if (Own_Thread)
- {
- if (thread_)
- {
- interrupter_.interrupt();
- thread_->join();
- delete thread_;
- thread_ = 0;
- }
- }
-
- 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);
- }
+ BOOST_ASIO_DECL void shutdown_service();
// Initialise the task, but only if the reactor is not in its own thread.
- void init_task()
- {
- io_service_.init_task();
- }
+ BOOST_ASIO_DECL void init_task();
// Register a socket with the reactor. Returns 0 on success, system error
// code on failure.
- int register_descriptor(socket_type, per_descriptor_data&)
+ BOOST_ASIO_DECL int register_descriptor(socket_type, per_descriptor_data&);
+
+ // Post a reactor operation for immediate completion.
+ void post_immediate_completion(reactor_op* op)
{
- return 0;
+ io_service_.post_immediate_completion(op);
}
// Start a new operation. The reactor operation will be performed when the
// given descriptor is flagged as ready, or an error has occurred.
- void start_op(int op_type, socket_type descriptor,
- per_descriptor_data&, reactor_op* op, bool)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- if (!shutdown_)
- {
- bool first = op_queue_[op_type].enqueue_operation(descriptor, op);
- io_service_.work_started();
- if (first)
- interrupter_.interrupt();
- }
- }
+ BOOST_ASIO_DECL void start_op(int op_type, socket_type descriptor,
+ per_descriptor_data&, reactor_op* op, bool);
// Cancel all operations associated with the given descriptor. The
// handlers associated with the descriptor will be invoked with the
// operation_aborted error.
- void cancel_ops(socket_type descriptor, per_descriptor_data&)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- cancel_ops_unlocked(descriptor, boost::asio::error::operation_aborted);
- }
+ BOOST_ASIO_DECL void cancel_ops(socket_type descriptor, per_descriptor_data&);
// Cancel any operations that are running against the descriptor and remove
// its registration from the reactor.
- void close_descriptor(socket_type descriptor, per_descriptor_data&)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- cancel_ops_unlocked(descriptor, boost::asio::error::operation_aborted);
- }
+ BOOST_ASIO_DECL void close_descriptor(socket_type descriptor,
+ per_descriptor_data&);
// Add a new timer queue to the reactor.
template <typename Time_Traits>
- void add_timer_queue(timer_queue<Time_Traits>& timer_queue)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- timer_queues_.insert(&timer_queue);
- }
+ void add_timer_queue(timer_queue<Time_Traits>& queue);
// Remove a timer queue from the reactor.
template <typename Time_Traits>
- void remove_timer_queue(timer_queue<Time_Traits>& timer_queue)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- timer_queues_.erase(&timer_queue);
- }
+ void remove_timer_queue(timer_queue<Time_Traits>& queue);
// Schedule a new operation in the given timer queue to expire at the
// specified absolute time.
template <typename Time_Traits>
- void schedule_timer(timer_queue<Time_Traits>& timer_queue,
- const typename Time_Traits::time_type& time, timer_op* op, void* token)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- if (!shutdown_)
- {
- bool earliest = timer_queue.enqueue_timer(time, op, token);
- io_service_.work_started();
- if (earliest)
- interrupter_.interrupt();
- }
- }
+ void schedule_timer(timer_queue<Time_Traits>& queue,
+ const typename Time_Traits::time_type& time,
+ typename timer_queue<Time_Traits>::per_timer_data& timer, timer_op* op);
// Cancel the timer operations associated with the given token. Returns the
// number of operations that have been posted or dispatched.
template <typename Time_Traits>
- std::size_t cancel_timer(timer_queue<Time_Traits>& timer_queue, void* token)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- op_queue<operation> ops;
- std::size_t n = timer_queue.cancel_timer(token, ops);
- lock.unlock();
- io_service_.post_deferred_completions(ops);
- return n;
- }
+ std::size_t cancel_timer(timer_queue<Time_Traits>& queue,
+ typename timer_queue<Time_Traits>::per_timer_data& timer);
// Run select once until interrupted or events are ready to be dispatched.
- void run(bool block, op_queue<operation>& ops)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
-
- // Check if the thread is supposed to stop.
- if (Own_Thread)
- if (stop_thread_)
- return;
-
- // 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);
- }
+ BOOST_ASIO_DECL void run(bool block, op_queue<operation>& ops);
// Interrupt the select loop.
- void interrupt()
- {
- interrupter_.interrupt();
- }
+ BOOST_ASIO_DECL void interrupt();
private:
+#if defined(BOOST_ASIO_HAS_IOCP)
// Run the select loop in the thread.
- void run_thread()
- {
- if (Own_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();
- }
- }
- }
+ BOOST_ASIO_DECL void run_thread();
// Entry point for the select loop thread.
- static void call_run_thread(select_reactor* reactor)
- {
- if (Own_Thread)
- {
- reactor->run_thread();
- }
- }
+ BOOST_ASIO_DECL static void call_run_thread(select_reactor* reactor);
+#endif // defined(BOOST_ASIO_HAS_IOCP)
+
+ // Helper function to add a new timer queue.
+ BOOST_ASIO_DECL void do_add_timer_queue(timer_queue_base& queue);
+
+ // Helper function to remove a timer queue.
+ BOOST_ASIO_DECL void do_remove_timer_queue(timer_queue_base& queue);
// Get the timeout value for the select call.
- timeval* 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;
- }
+ BOOST_ASIO_DECL timeval* get_timeout(timeval& tv);
// Cancel all operations associated with the given descriptor. This function
// does not acquire the select_reactor's mutex.
- void 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();
- }
+ BOOST_ASIO_DECL void cancel_ops_unlocked(socket_type descriptor,
+ const boost::system::error_code& ec);
// The io_service implementation used to post completions.
io_service_impl& io_service_;
@@ -357,11 +165,13 @@ private:
// The timer queues.
timer_queue_set timer_queues_;
+#if defined(BOOST_ASIO_HAS_IOCP)
// Does the reactor loop thread need to stop.
bool stop_thread_;
// The thread that is running the reactor loop.
boost::asio::detail::thread* thread_;
+#endif // defined(BOOST_ASIO_HAS_IOCP)
// Whether the service has been shut down.
bool shutdown_;
@@ -373,4 +183,14 @@ private:
#include <boost/asio/detail/pop_options.hpp>
+#include <boost/asio/detail/impl/select_reactor.hpp>
+#if defined(BOOST_ASIO_HEADER_ONLY)
+# include <boost/asio/detail/impl/select_reactor.ipp>
+#endif // defined(BOOST_ASIO_HEADER_ONLY)
+
+#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_SELECT_REACTOR_HPP