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author | Remko Tronçon <git@el-tramo.be> | 2010-11-24 20:33:19 (GMT) |
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committer | Remko Tronçon <git@el-tramo.be> | 2010-11-24 20:35:17 (GMT) |
commit | 332d60c56dfaa11fdd135088279d15cd5983b3d4 (patch) | |
tree | dd77717a4e1732da929d5ff8a0471fa3f005e201 /3rdParty/Boost/src/boost/asio/detail/select_reactor.hpp | |
parent | 90c44a10fec26d2a0935b2d62e82b6a5be028373 (diff) | |
download | swift-contrib-332d60c56dfaa11fdd135088279d15cd5983b3d4.zip swift-contrib-332d60c56dfaa11fdd135088279d15cd5983b3d4.tar.bz2 |
Upgraded Boost to 1.45.0.
Diffstat (limited to '3rdParty/Boost/src/boost/asio/detail/select_reactor.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/asio/detail/select_reactor.hpp | 306 |
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 |