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Diffstat (limited to 'lib/asio/detail/dev_poll_reactor.hpp')
-rw-r--r-- | lib/asio/detail/dev_poll_reactor.hpp | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/lib/asio/detail/dev_poll_reactor.hpp b/lib/asio/detail/dev_poll_reactor.hpp deleted file mode 100644 index e9e4e29..0000000 --- a/lib/asio/detail/dev_poll_reactor.hpp +++ /dev/null @@ -1,218 +0,0 @@ -// -// detail/dev_poll_reactor.hpp -// ~~~~~~~~~~~~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2018 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 ASIO_DETAIL_DEV_POLL_REACTOR_HPP -#define ASIO_DETAIL_DEV_POLL_REACTOR_HPP - -#if defined(_MSC_VER) && (_MSC_VER >= 1200) -# pragma once -#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) - -#include "asio/detail/config.hpp" - -#if defined(ASIO_HAS_DEV_POLL) - -#include <cstddef> -#include <vector> -#include <sys/devpoll.h> -#include "asio/detail/hash_map.hpp" -#include "asio/detail/limits.hpp" -#include "asio/detail/mutex.hpp" -#include "asio/detail/op_queue.hpp" -#include "asio/detail/reactor_op.hpp" -#include "asio/detail/reactor_op_queue.hpp" -#include "asio/detail/select_interrupter.hpp" -#include "asio/detail/socket_types.hpp" -#include "asio/detail/timer_queue_base.hpp" -#include "asio/detail/timer_queue_set.hpp" -#include "asio/detail/wait_op.hpp" -#include "asio/execution_context.hpp" - -#include "asio/detail/push_options.hpp" - -namespace asio { -namespace detail { - -class dev_poll_reactor - : public execution_context_service_base<dev_poll_reactor> -{ -public: - enum op_types { read_op = 0, write_op = 1, - connect_op = 1, except_op = 2, max_ops = 3 }; - - // Per-descriptor data. - struct per_descriptor_data - { - }; - - // Constructor. - ASIO_DECL dev_poll_reactor(asio::execution_context& ctx); - - // Destructor. - ASIO_DECL ~dev_poll_reactor(); - - // Destroy all user-defined handler objects owned by the service. - ASIO_DECL void shutdown(); - - // Recreate internal descriptors following a fork. - ASIO_DECL void notify_fork( - asio::execution_context::fork_event fork_ev); - - // Initialise the task. - ASIO_DECL void init_task(); - - // Register a socket with the reactor. Returns 0 on success, system error - // code on failure. - ASIO_DECL int register_descriptor(socket_type, per_descriptor_data&); - - // Register a descriptor with an associated single operation. Returns 0 on - // success, system error code on failure. - ASIO_DECL int register_internal_descriptor( - int op_type, socket_type descriptor, - per_descriptor_data& descriptor_data, reactor_op* op); - - // Move descriptor registration from one descriptor_data object to another. - ASIO_DECL void move_descriptor(socket_type descriptor, - per_descriptor_data& target_descriptor_data, - per_descriptor_data& source_descriptor_data); - - // Post a reactor operation for immediate completion. - void post_immediate_completion(reactor_op* op, bool is_continuation) - { - scheduler_.post_immediate_completion(op, is_continuation); - } - - // Start a new operation. The reactor operation will be performed when the - // given descriptor is flagged as ready, or an error has occurred. - ASIO_DECL void start_op(int op_type, socket_type descriptor, - per_descriptor_data&, reactor_op* op, - bool is_continuation, bool allow_speculative); - - // Cancel all operations associated with the given descriptor. The - // handlers associated with the descriptor will be invoked with the - // operation_aborted error. - 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. The reactor resources associated with - // the descriptor must be released by calling cleanup_descriptor_data. - ASIO_DECL void deregister_descriptor(socket_type descriptor, - per_descriptor_data&, bool closing); - - // Remove the descriptor's registration from the reactor. The reactor - // resources associated with the descriptor must be released by calling - // cleanup_descriptor_data. - ASIO_DECL void deregister_internal_descriptor( - socket_type descriptor, per_descriptor_data&); - - // Perform any post-deregistration cleanup tasks associated with the - // descriptor data. - ASIO_DECL void cleanup_descriptor_data(per_descriptor_data&); - - // Add a new timer queue to the reactor. - template <typename Time_Traits> - 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>& 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>& queue, - const typename Time_Traits::time_type& time, - typename timer_queue<Time_Traits>::per_timer_data& timer, wait_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>& queue, - typename timer_queue<Time_Traits>::per_timer_data& timer, - std::size_t max_cancelled = (std::numeric_limits<std::size_t>::max)()); - - // Move the timer operations associated with the given timer. - template <typename Time_Traits> - void move_timer(timer_queue<Time_Traits>& queue, - typename timer_queue<Time_Traits>::per_timer_data& target, - typename timer_queue<Time_Traits>::per_timer_data& source); - - // Run /dev/poll once until interrupted or events are ready to be dispatched. - ASIO_DECL void run(long usec, op_queue<operation>& ops); - - // Interrupt the select loop. - ASIO_DECL void interrupt(); - -private: - // Create the /dev/poll file descriptor. Throws an exception if the descriptor - // cannot be created. - ASIO_DECL static int do_dev_poll_create(); - - // Helper function to add a new timer queue. - ASIO_DECL void do_add_timer_queue(timer_queue_base& queue); - - // Helper function to remove a timer queue. - ASIO_DECL void do_remove_timer_queue(timer_queue_base& queue); - - // Get the timeout value for the /dev/poll DP_POLL operation. The timeout - // value is returned as a number of milliseconds. A return value of -1 - // indicates that the poll should block indefinitely. - ASIO_DECL int get_timeout(int msec); - - // Cancel all operations associated with the given descriptor. The do_cancel - // function of the handler objects will be invoked. This function does not - // acquire the dev_poll_reactor's mutex. - ASIO_DECL void cancel_ops_unlocked(socket_type descriptor, - const asio::error_code& ec); - - // Add a pending event entry for the given descriptor. - ASIO_DECL ::pollfd& add_pending_event_change(int descriptor); - - // The scheduler implementation used to post completions. - scheduler& scheduler_; - - // Mutex to protect access to internal data. - asio::detail::mutex mutex_; - - // The /dev/poll file descriptor. - int dev_poll_fd_; - - // Vector of /dev/poll events waiting to be written to the descriptor. - std::vector< ::pollfd> pending_event_changes_; - - // Hash map to associate a descriptor with a pending event change index. - hash_map<int, std::size_t> pending_event_change_index_; - - // The interrupter is used to break a blocking DP_POLL operation. - select_interrupter interrupter_; - - // The queues of read, write and except operations. - reactor_op_queue<socket_type> op_queue_[max_ops]; - - // The timer queues. - timer_queue_set timer_queues_; - - // Whether the service has been shut down. - bool shutdown_; -}; - -} // namespace detail -} // namespace asio - -#include "asio/detail/pop_options.hpp" - -#include "asio/detail/impl/dev_poll_reactor.hpp" -#if defined(ASIO_HEADER_ONLY) -# include "asio/detail/impl/dev_poll_reactor.ipp" -#endif // defined(ASIO_HEADER_ONLY) - -#endif // defined(ASIO_HAS_DEV_POLL) - -#endif // ASIO_DETAIL_DEV_POLL_REACTOR_HPP |