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Diffstat (limited to '3rdParty/Boost/src/boost/asio/detail/epoll_reactor.hpp')
-rw-r--r--3rdParty/Boost/src/boost/asio/detail/epoll_reactor.hpp76
1 files changed, 62 insertions, 14 deletions
diff --git a/3rdParty/Boost/src/boost/asio/detail/epoll_reactor.hpp b/3rdParty/Boost/src/boost/asio/detail/epoll_reactor.hpp
index 1889017..8f66f74 100644
--- a/3rdParty/Boost/src/boost/asio/detail/epoll_reactor.hpp
+++ b/3rdParty/Boost/src/boost/asio/detail/epoll_reactor.hpp
@@ -2,7 +2,7 @@
// detail/epoll_reactor.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
-// Copyright (c) 2003-2011 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// Copyright (c) 2003-2012 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)
@@ -19,7 +19,10 @@
#if defined(BOOST_ASIO_HAS_EPOLL)
+#include <boost/cstdint.hpp>
+#include <boost/limits.hpp>
#include <boost/asio/io_service.hpp>
+#include <boost/asio/detail/atomic_count.hpp>
#include <boost/asio/detail/epoll_reactor_fwd.hpp>
#include <boost/asio/detail/mutex.hpp>
#include <boost/asio/detail/object_pool.hpp>
@@ -27,10 +30,10 @@
#include <boost/asio/detail/reactor_op.hpp>
#include <boost/asio/detail/select_interrupter.hpp>
#include <boost/asio/detail/socket_types.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/detail/wait_op.hpp>
#include <boost/asio/detail/push_options.hpp>
@@ -46,15 +49,27 @@ public:
connect_op = 1, except_op = 2, max_ops = 3 };
// Per-descriptor queues.
- class descriptor_state
+ class descriptor_state : operation
{
friend class epoll_reactor;
friend class object_pool_access;
+
+ descriptor_state* next_;
+ descriptor_state* prev_;
+
mutex mutex_;
+ epoll_reactor* reactor_;
+ int descriptor_;
+ boost::uint32_t registered_events_;
op_queue<reactor_op> op_queue_[max_ops];
bool shutdown_;
- descriptor_state* next_;
- descriptor_state* prev_;
+
+ BOOST_ASIO_DECL descriptor_state();
+ void set_ready_events(uint32_t events) { task_result_ = events; }
+ BOOST_ASIO_DECL operation* perform_io(uint32_t events);
+ BOOST_ASIO_DECL static void do_complete(
+ io_service_impl* owner, operation* base,
+ const boost::system::error_code& ec, std::size_t bytes_transferred);
};
// Per-descriptor data.
@@ -69,6 +84,10 @@ public:
// Destroy all user-defined handler objects owned by the service.
BOOST_ASIO_DECL void shutdown_service();
+ // Recreate internal descriptors following a fork.
+ BOOST_ASIO_DECL void fork_service(
+ boost::asio::io_service::fork_event fork_ev);
+
// Initialise the task.
BOOST_ASIO_DECL void init_task();
@@ -77,6 +96,17 @@ public:
BOOST_ASIO_DECL int register_descriptor(socket_type descriptor,
per_descriptor_data& descriptor_data);
+ // Register a descriptor with an associated single operation. Returns 0 on
+ // success, system error code on failure.
+ BOOST_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.
+ BOOST_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)
{
@@ -86,8 +116,8 @@ public:
// Start a new operation. The reactor operation will be performed when the
// given descriptor is flagged as ready, or an error has occurred.
BOOST_ASIO_DECL void start_op(int op_type, socket_type descriptor,
- per_descriptor_data& descriptor_data,
- reactor_op* op, bool allow_speculative);
+ per_descriptor_data& descriptor_data, reactor_op* op,
+ bool allow_speculative);
// Cancel all operations associated with the given descriptor. The
// handlers associated with the descriptor will be invoked with the
@@ -97,8 +127,12 @@ public:
// Cancel any operations that are running against the descriptor and remove
// its registration from the reactor.
- BOOST_ASIO_DECL void close_descriptor(socket_type descriptor,
- per_descriptor_data& descriptor_data);
+ BOOST_ASIO_DECL void deregister_descriptor(socket_type descriptor,
+ per_descriptor_data& descriptor_data, bool closing);
+
+ // Remote the descriptor's registration from the reactor.
+ BOOST_ASIO_DECL void deregister_internal_descriptor(
+ socket_type descriptor, per_descriptor_data& descriptor_data);
// Add a new timer queue to the reactor.
template <typename Time_Traits>
@@ -113,13 +147,14 @@ public:
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, timer_op* op);
+ 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);
+ typename timer_queue<Time_Traits>::per_timer_data& timer,
+ std::size_t max_cancelled = (std::numeric_limits<std::size_t>::max)());
// Run epoll once until interrupted or events are ready to be dispatched.
BOOST_ASIO_DECL void run(bool block, op_queue<operation>& ops);
@@ -135,6 +170,15 @@ private:
// cannot be created.
BOOST_ASIO_DECL static int do_epoll_create();
+ // Create the timerfd file descriptor. Does not throw.
+ BOOST_ASIO_DECL static int do_timerfd_create();
+
+ // Allocate a new descriptor state object.
+ BOOST_ASIO_DECL descriptor_state* allocate_descriptor_state();
+
+ // Free an existing descriptor state object.
+ BOOST_ASIO_DECL void free_descriptor_state(descriptor_state* s);
+
// Helper function to add a new timer queue.
BOOST_ASIO_DECL void do_add_timer_queue(timer_queue_base& queue);
@@ -161,15 +205,15 @@ private:
// Mutex to protect access to internal data.
mutex mutex_;
+ // The interrupter is used to break a blocking epoll_wait call.
+ select_interrupter interrupter_;
+
// The epoll file descriptor.
int epoll_fd_;
// The timer file descriptor.
int timer_fd_;
- // The interrupter is used to break a blocking epoll_wait call.
- select_interrupter interrupter_;
-
// The timer queues.
timer_queue_set timer_queues_;
@@ -181,6 +225,10 @@ private:
// Keep track of all registered descriptors.
object_pool<descriptor_state> registered_descriptors_;
+
+ // Helper class to do post-perform_io cleanup.
+ struct perform_io_cleanup_on_block_exit;
+ friend struct perform_io_cleanup_on_block_exit;
};
} // namespace detail