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Diffstat (limited to '3rdParty/Boost/boost/asio/detail/kqueue_reactor.hpp')
m---------3rdParty/Boost0
-rw-r--r--3rdParty/Boost/boost/asio/detail/kqueue_reactor.hpp714
2 files changed, 0 insertions, 714 deletions
diff --git a/3rdParty/Boost b/3rdParty/Boost
new file mode 160000
+Subproject 3bbdbc8cf1996f23d9a366da8bac0f97be6ad79
diff --git a/3rdParty/Boost/boost/asio/detail/kqueue_reactor.hpp b/3rdParty/Boost/boost/asio/detail/kqueue_reactor.hpp
deleted file mode 100644
index 179b7d4..0000000
--- a/3rdParty/Boost/boost/asio/detail/kqueue_reactor.hpp
+++ /dev/null
@@ -1,714 +0,0 @@
-//
-// kqueue_reactor.hpp
-// ~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-// Copyright (c) 2005 Stefan Arentz (stefan at soze 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_KQUEUE_REACTOR_HPP
-#define BOOST_ASIO_DETAIL_KQUEUE_REACTOR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include <boost/asio/detail/push_options.hpp>
-
-#include <boost/asio/detail/kqueue_reactor_fwd.hpp>
-
-#if defined(BOOST_ASIO_HAS_KQUEUE)
-
-#include <boost/asio/detail/push_options.hpp>
-#include <cstddef>
-#include <vector>
-#include <sys/types.h>
-#include <sys/event.h>
-#include <sys/time.h>
-#include <boost/config.hpp>
-#include <boost/date_time/posix_time/posix_time_types.hpp>
-#include <boost/throw_exception.hpp>
-#include <boost/system/system_error.hpp>
-#include <boost/asio/detail/pop_options.hpp>
-
-#include <boost/asio/error.hpp>
-#include <boost/asio/io_service.hpp>
-#include <boost/asio/detail/bind_handler.hpp>
-#include <boost/asio/detail/mutex.hpp>
-#include <boost/asio/detail/task_io_service.hpp>
-#include <boost/asio/detail/thread.hpp>
-#include <boost/asio/detail/reactor_op_queue.hpp>
-#include <boost/asio/detail/select_interrupter.hpp>
-#include <boost/asio/detail/service_base.hpp>
-#include <boost/asio/detail/signal_blocker.hpp>
-#include <boost/asio/detail/socket_types.hpp>
-#include <boost/asio/detail/timer_queue.hpp>
-
-// Older versions of Mac OS X may not define EV_OOBAND.
-#if !defined(EV_OOBAND)
-# define EV_OOBAND EV_FLAG1
-#endif // !defined(EV_OOBAND)
-
-namespace boost {
-namespace asio {
-namespace detail {
-
-template <bool Own_Thread>
-class kqueue_reactor
- : public boost::asio::detail::service_base<kqueue_reactor<Own_Thread> >
-{
-public:
- // Per-descriptor data.
- struct per_descriptor_data
- {
- bool allow_speculative_read;
- bool allow_speculative_write;
- };
-
- // Constructor.
- kqueue_reactor(boost::asio::io_service& io_service)
- : boost::asio::detail::service_base<
- kqueue_reactor<Own_Thread> >(io_service),
- mutex_(),
- kqueue_fd_(do_kqueue_create()),
- wait_in_progress_(false),
- interrupter_(),
- read_op_queue_(),
- write_op_queue_(),
- except_op_queue_(),
- pending_cancellations_(),
- stop_thread_(false),
- thread_(0),
- shutdown_(false),
- need_kqueue_wait_(true)
- {
- // Start the reactor's internal thread only if needed.
- if (Own_Thread)
- {
- boost::asio::detail::signal_blocker sb;
- thread_ = new boost::asio::detail::thread(
- bind_handler(&kqueue_reactor::call_run_thread, this));
- }
-
- // Add the interrupter's descriptor to the kqueue.
- struct kevent event;
- EV_SET(&event, interrupter_.read_descriptor(),
- EVFILT_READ, EV_ADD, 0, 0, 0);
- ::kevent(kqueue_fd_, &event, 1, 0, 0, 0);
- }
-
- // Destructor.
- ~kqueue_reactor()
- {
- shutdown_service();
- close(kqueue_fd_);
- }
-
- // 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 (thread_)
- {
- interrupter_.interrupt();
- thread_->join();
- delete thread_;
- thread_ = 0;
- }
-
- read_op_queue_.destroy_operations();
- write_op_queue_.destroy_operations();
- except_op_queue_.destroy_operations();
-
- for (std::size_t i = 0; i < timer_queues_.size(); ++i)
- timer_queues_[i]->destroy_timers();
- timer_queues_.clear();
- }
-
- // Initialise the task, but only if the reactor is not in its own thread.
- void init_task()
- {
- if (!Own_Thread)
- {
- typedef task_io_service<kqueue_reactor<Own_Thread> > task_io_service_type;
- use_service<task_io_service_type>(this->get_io_service()).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& descriptor_data)
- {
- descriptor_data.allow_speculative_read = true;
- descriptor_data.allow_speculative_write = true;
-
- return 0;
- }
-
- // Start a new read operation. The handler object will be invoked when the
- // given descriptor is ready to be read, or an error has occurred.
- template <typename Handler>
- void start_read_op(socket_type descriptor,
- per_descriptor_data& descriptor_data, Handler handler,
- bool allow_speculative_read = true)
- {
- if (allow_speculative_read && descriptor_data.allow_speculative_read)
- {
- boost::system::error_code ec;
- std::size_t bytes_transferred = 0;
- if (handler.perform(ec, bytes_transferred))
- {
- handler.complete(ec, bytes_transferred);
- return;
- }
-
- // We only get one shot at a speculative read in this function.
- allow_speculative_read = false;
- }
-
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
-
- if (shutdown_)
- return;
-
- if (!allow_speculative_read)
- need_kqueue_wait_ = true;
- else if (!read_op_queue_.has_operation(descriptor))
- {
- // Speculative reads are ok as there are no queued read operations.
- descriptor_data.allow_speculative_read = true;
-
- boost::system::error_code ec;
- std::size_t bytes_transferred = 0;
- if (handler.perform(ec, bytes_transferred))
- {
- handler.complete(ec, bytes_transferred);
- return;
- }
- }
-
- // Speculative reads are not ok as there will be queued read operations.
- descriptor_data.allow_speculative_read = false;
-
- if (read_op_queue_.enqueue_operation(descriptor, handler))
- {
- struct kevent event;
- EV_SET(&event, descriptor, EVFILT_READ, EV_ADD, 0, 0, 0);
- if (::kevent(kqueue_fd_, &event, 1, 0, 0, 0) == -1)
- {
- boost::system::error_code ec(errno,
- boost::asio::error::get_system_category());
- read_op_queue_.perform_all_operations(descriptor, ec);
- }
- }
- }
-
- // Start a new write operation. The handler object will be invoked when the
- // given descriptor is ready to be written, or an error has occurred.
- template <typename Handler>
- void start_write_op(socket_type descriptor,
- per_descriptor_data& descriptor_data, Handler handler,
- bool allow_speculative_write = true)
- {
- if (allow_speculative_write && descriptor_data.allow_speculative_write)
- {
- boost::system::error_code ec;
- std::size_t bytes_transferred = 0;
- if (handler.perform(ec, bytes_transferred))
- {
- handler.complete(ec, bytes_transferred);
- return;
- }
-
- // We only get one shot at a speculative write in this function.
- allow_speculative_write = false;
- }
-
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
-
- if (shutdown_)
- return;
-
- if (!allow_speculative_write)
- need_kqueue_wait_ = true;
- else if (!write_op_queue_.has_operation(descriptor))
- {
- // Speculative writes are ok as there are no queued write operations.
- descriptor_data.allow_speculative_write = true;
-
- boost::system::error_code ec;
- std::size_t bytes_transferred = 0;
- if (handler.perform(ec, bytes_transferred))
- {
- handler.complete(ec, bytes_transferred);
- return;
- }
- }
-
- // Speculative writes are not ok as there will be queued write operations.
- descriptor_data.allow_speculative_write = false;
-
- if (write_op_queue_.enqueue_operation(descriptor, handler))
- {
- struct kevent event;
- EV_SET(&event, descriptor, EVFILT_WRITE, EV_ADD, 0, 0, 0);
- if (::kevent(kqueue_fd_, &event, 1, 0, 0, 0) == -1)
- {
- boost::system::error_code ec(errno,
- boost::asio::error::get_system_category());
- write_op_queue_.perform_all_operations(descriptor, ec);
- }
- }
- }
-
- // Start a new exception operation. The handler object will be invoked when
- // the given descriptor has exception information, or an error has occurred.
- template <typename Handler>
- void start_except_op(socket_type descriptor,
- per_descriptor_data&, Handler handler)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
-
- if (shutdown_)
- return;
-
- if (except_op_queue_.enqueue_operation(descriptor, handler))
- {
- struct kevent event;
- if (read_op_queue_.has_operation(descriptor))
- EV_SET(&event, descriptor, EVFILT_READ, EV_ADD, 0, 0, 0);
- else
- EV_SET(&event, descriptor, EVFILT_READ, EV_ADD, EV_OOBAND, 0, 0);
- if (::kevent(kqueue_fd_, &event, 1, 0, 0, 0) == -1)
- {
- boost::system::error_code ec(errno,
- boost::asio::error::get_system_category());
- except_op_queue_.perform_all_operations(descriptor, ec);
- }
- }
- }
-
- // Start a new write operation. The handler object will be invoked when the
- // given descriptor is ready to be written, or an error has occurred.
- template <typename Handler>
- void start_connect_op(socket_type descriptor,
- per_descriptor_data& descriptor_data, Handler handler)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
-
- if (shutdown_)
- return;
-
- // Speculative writes are not ok as there will be queued write operations.
- descriptor_data.allow_speculative_write = false;
-
- if (write_op_queue_.enqueue_operation(descriptor, handler))
- {
- struct kevent event;
- EV_SET(&event, descriptor, EVFILT_WRITE, EV_ADD, 0, 0, 0);
- if (::kevent(kqueue_fd_, &event, 1, 0, 0, 0) == -1)
- {
- boost::system::error_code ec(errno,
- boost::asio::error::get_system_category());
- write_op_queue_.perform_all_operations(descriptor, ec);
- }
- }
- }
-
- // 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);
- }
-
- // 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_);
-
- // Remove the descriptor from kqueue.
- struct kevent event[2];
- EV_SET(&event[0], descriptor, EVFILT_READ, EV_DELETE, 0, 0, 0);
- EV_SET(&event[1], descriptor, EVFILT_WRITE, EV_DELETE, 0, 0, 0);
- ::kevent(kqueue_fd_, event, 2, 0, 0, 0);
-
- // Cancel any outstanding operations associated with the descriptor.
- cancel_ops_unlocked(descriptor);
- }
-
- // 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_.push_back(&timer_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_);
- for (std::size_t i = 0; i < timer_queues_.size(); ++i)
- {
- if (timer_queues_[i] == &timer_queue)
- {
- timer_queues_.erase(timer_queues_.begin() + i);
- return;
- }
- }
- }
-
- // Schedule a timer in the given timer queue to expire at the specified
- // absolute time. The handler object will be invoked when the timer expires.
- template <typename Time_Traits, typename Handler>
- void schedule_timer(timer_queue<Time_Traits>& timer_queue,
- const typename Time_Traits::time_type& time, Handler handler, void* token)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- if (!shutdown_)
- if (timer_queue.enqueue_timer(time, handler, token))
- interrupter_.interrupt();
- }
-
- // Cancel the timer associated with the given token. Returns the number of
- // handlers 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_);
- std::size_t n = timer_queue.cancel_timer(token);
- if (n > 0)
- interrupter_.interrupt();
- return n;
- }
-
-private:
- friend class task_io_service<kqueue_reactor<Own_Thread> >;
-
- // Run the kqueue loop.
- void run(bool block)
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
-
- // Dispatch any operation cancellations that were made while the select
- // loop was not running.
- read_op_queue_.perform_cancellations();
- write_op_queue_.perform_cancellations();
- except_op_queue_.perform_cancellations();
- for (std::size_t i = 0; i < timer_queues_.size(); ++i)
- timer_queues_[i]->dispatch_cancellations();
-
- // Check if the thread is supposed to stop.
- if (stop_thread_)
- {
- complete_operations_and_timers(lock);
- return;
- }
-
- // We can return immediately if there's no work to do and the reactor is
- // not supposed to block.
- if (!block && read_op_queue_.empty() && write_op_queue_.empty()
- && except_op_queue_.empty() && all_timer_queues_are_empty())
- {
- complete_operations_and_timers(lock);
- return;
- }
-
- // Determine how long to block while waiting for events.
- timespec timeout_buf = { 0, 0 };
- timespec* timeout = block ? get_timeout(timeout_buf) : &timeout_buf;
-
- wait_in_progress_ = true;
- lock.unlock();
-
- // Block on the kqueue descriptor.
- struct kevent events[128];
- int num_events = (block || need_kqueue_wait_)
- ? kevent(kqueue_fd_, 0, 0, events, 128, timeout)
- : 0;
-
- lock.lock();
- wait_in_progress_ = false;
-
- // Block signals while performing operations.
- boost::asio::detail::signal_blocker sb;
-
- // Dispatch the waiting events.
- for (int i = 0; i < num_events; ++i)
- {
- int descriptor = events[i].ident;
- if (descriptor == interrupter_.read_descriptor())
- {
- interrupter_.reset();
- }
- else if (events[i].filter == EVFILT_READ)
- {
- // Dispatch operations associated with the descriptor.
- bool more_reads = false;
- bool more_except = false;
- if (events[i].flags & EV_ERROR)
- {
- boost::system::error_code error(
- events[i].data, boost::asio::error::get_system_category());
- except_op_queue_.perform_all_operations(descriptor, error);
- read_op_queue_.perform_all_operations(descriptor, error);
- }
- else if (events[i].flags & EV_OOBAND)
- {
- boost::system::error_code error;
- more_except = except_op_queue_.perform_operation(descriptor, error);
- if (events[i].data > 0)
- more_reads = read_op_queue_.perform_operation(descriptor, error);
- else
- more_reads = read_op_queue_.has_operation(descriptor);
- }
- else
- {
- boost::system::error_code error;
- more_reads = read_op_queue_.perform_operation(descriptor, error);
- more_except = except_op_queue_.has_operation(descriptor);
- }
-
- // Update the descriptor in the kqueue.
- struct kevent event;
- if (more_reads)
- EV_SET(&event, descriptor, EVFILT_READ, EV_ADD, 0, 0, 0);
- else if (more_except)
- EV_SET(&event, descriptor, EVFILT_READ, EV_ADD, EV_OOBAND, 0, 0);
- else
- EV_SET(&event, descriptor, EVFILT_READ, EV_DELETE, 0, 0, 0);
- if (::kevent(kqueue_fd_, &event, 1, 0, 0, 0) == -1)
- {
- boost::system::error_code error(errno,
- boost::asio::error::get_system_category());
- except_op_queue_.perform_all_operations(descriptor, error);
- read_op_queue_.perform_all_operations(descriptor, error);
- }
- }
- else if (events[i].filter == EVFILT_WRITE)
- {
- // Dispatch operations associated with the descriptor.
- bool more_writes = false;
- if (events[i].flags & EV_ERROR)
- {
- boost::system::error_code error(
- events[i].data, boost::asio::error::get_system_category());
- write_op_queue_.perform_all_operations(descriptor, error);
- }
- else
- {
- boost::system::error_code error;
- more_writes = write_op_queue_.perform_operation(descriptor, error);
- }
-
- // Update the descriptor in the kqueue.
- struct kevent event;
- if (more_writes)
- EV_SET(&event, descriptor, EVFILT_WRITE, EV_ADD, 0, 0, 0);
- else
- EV_SET(&event, descriptor, EVFILT_WRITE, EV_DELETE, 0, 0, 0);
- if (::kevent(kqueue_fd_, &event, 1, 0, 0, 0) == -1)
- {
- boost::system::error_code error(errno,
- boost::asio::error::get_system_category());
- write_op_queue_.perform_all_operations(descriptor, error);
- }
- }
- }
-
- read_op_queue_.perform_cancellations();
- write_op_queue_.perform_cancellations();
- except_op_queue_.perform_cancellations();
- for (std::size_t i = 0; i < timer_queues_.size(); ++i)
- {
- timer_queues_[i]->dispatch_timers();
- timer_queues_[i]->dispatch_cancellations();
- }
-
- // Issue any pending cancellations.
- for (std::size_t i = 0; i < pending_cancellations_.size(); ++i)
- cancel_ops_unlocked(pending_cancellations_[i]);
- pending_cancellations_.clear();
-
- // Determine whether kqueue needs to be called next time the reactor is run.
- need_kqueue_wait_ = !read_op_queue_.empty()
- || !write_op_queue_.empty() || !except_op_queue_.empty();
-
- complete_operations_and_timers(lock);
- }
-
- // Run the select loop in the thread.
- void run_thread()
- {
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- while (!stop_thread_)
- {
- lock.unlock();
- run(true);
- lock.lock();
- }
- }
-
- // Entry point for the select loop thread.
- static void call_run_thread(kqueue_reactor* reactor)
- {
- reactor->run_thread();
- }
-
- // Interrupt the select loop.
- void interrupt()
- {
- interrupter_.interrupt();
- }
-
- // Create the kqueue file descriptor. Throws an exception if the descriptor
- // cannot be created.
- static int do_kqueue_create()
- {
- int fd = kqueue();
- if (fd == -1)
- {
- boost::throw_exception(
- boost::system::system_error(
- boost::system::error_code(errno,
- boost::asio::error::get_system_category()),
- "kqueue"));
- }
- return fd;
- }
-
- // Check if all timer queues are empty.
- bool all_timer_queues_are_empty() const
- {
- for (std::size_t i = 0; i < timer_queues_.size(); ++i)
- if (!timer_queues_[i]->empty())
- return false;
- return true;
- }
-
- // Get the timeout value for the kevent call.
- timespec* get_timeout(timespec& ts)
- {
- if (all_timer_queues_are_empty())
- return 0;
-
- // 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.
- boost::posix_time::time_duration minimum_wait_duration
- = boost::posix_time::minutes(5);
-
- for (std::size_t i = 0; i < timer_queues_.size(); ++i)
- {
- boost::posix_time::time_duration wait_duration
- = timer_queues_[i]->wait_duration();
- if (wait_duration < minimum_wait_duration)
- minimum_wait_duration = wait_duration;
- }
-
- if (minimum_wait_duration > boost::posix_time::time_duration())
- {
- ts.tv_sec = minimum_wait_duration.total_seconds();
- ts.tv_nsec = minimum_wait_duration.total_nanoseconds() % 1000000000;
- }
- else
- {
- ts.tv_sec = 0;
- ts.tv_nsec = 0;
- }
-
- return &ts;
- }
-
- // 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 kqueue_reactor's mutex.
- void cancel_ops_unlocked(socket_type descriptor)
- {
- bool interrupt = read_op_queue_.cancel_operations(descriptor);
- interrupt = write_op_queue_.cancel_operations(descriptor) || interrupt;
- interrupt = except_op_queue_.cancel_operations(descriptor) || interrupt;
- if (interrupt)
- interrupter_.interrupt();
- }
-
- // Clean up operations and timers. We must not hold the lock since the
- // destructors may make calls back into this reactor. We make a copy of the
- // vector of timer queues since the original may be modified while the lock
- // is not held.
- void complete_operations_and_timers(
- boost::asio::detail::mutex::scoped_lock& lock)
- {
- timer_queues_for_cleanup_ = timer_queues_;
- lock.unlock();
- read_op_queue_.complete_operations();
- write_op_queue_.complete_operations();
- except_op_queue_.complete_operations();
- for (std::size_t i = 0; i < timer_queues_for_cleanup_.size(); ++i)
- timer_queues_for_cleanup_[i]->complete_timers();
- }
-
- // Mutex to protect access to internal data.
- boost::asio::detail::mutex mutex_;
-
- // The kqueue file descriptor.
- int kqueue_fd_;
-
- // Whether the kqueue wait call is currently in progress
- bool wait_in_progress_;
-
- // The interrupter is used to break a blocking kevent call.
- select_interrupter interrupter_;
-
- // The queue of read operations.
- reactor_op_queue<socket_type> read_op_queue_;
-
- // The queue of write operations.
- reactor_op_queue<socket_type> write_op_queue_;
-
- // The queue of except operations.
- reactor_op_queue<socket_type> except_op_queue_;
-
- // The timer queues.
- std::vector<timer_queue_base*> timer_queues_;
-
- // A copy of the timer queues, used when cleaning up timers. The copy is
- // stored as a class data member to avoid unnecessary memory allocation.
- std::vector<timer_queue_base*> timer_queues_for_cleanup_;
-
- // The descriptors that are pending cancellation.
- std::vector<socket_type> pending_cancellations_;
-
- // Does the reactor loop thread need to stop.
- bool stop_thread_;
-
- // The thread that is running the reactor loop.
- boost::asio::detail::thread* thread_;
-
- // Whether the service has been shut down.
- bool shutdown_;
-
- // Whether we need to call kqueue the next time the reactor is run.
- bool need_kqueue_wait_;
-};
-
-} // namespace detail
-} // namespace asio
-} // namespace boost
-
-#endif // defined(BOOST_ASIO_HAS_KQUEUE)
-
-#include <boost/asio/detail/pop_options.hpp>
-
-#endif // BOOST_ASIO_DETAIL_KQUEUE_REACTOR_HPP