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Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/kqueue.hpp')
-rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/kqueue.hpp | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/kqueue.hpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/kqueue.hpp new file mode 100644 index 00000000..b6680b6a --- /dev/null +++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/kqueue.hpp @@ -0,0 +1,127 @@ +/* + Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file + + This file is part of libzmq, the ZeroMQ core engine in C++. + + libzmq is free software; you can redistribute it and/or modify it under + the terms of the GNU Lesser General Public License (LGPL) as published + by the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + As a special exception, the Contributors give you permission to link + this library with independent modules to produce an executable, + regardless of the license terms of these independent modules, and to + copy and distribute the resulting executable under terms of your choice, + provided that you also meet, for each linked independent module, the + terms and conditions of the license of that module. An independent + module is a module which is not derived from or based on this library. + If you modify this library, you must extend this exception to your + version of the library. + + libzmq is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public + License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef __ZMQ_KQUEUE_HPP_INCLUDED__ +#define __ZMQ_KQUEUE_HPP_INCLUDED__ + +// poller.hpp decides which polling mechanism to use. +#include "poller.hpp" +#if defined ZMQ_USE_KQUEUE + +#include <vector> +#include <unistd.h> + +#include "ctx.hpp" +#include "fd.hpp" +#include "thread.hpp" +#include "poller_base.hpp" + +namespace zmq +{ + + struct i_poll_events; + + // Implements socket polling mechanism using the BSD-specific + // kqueue interface. + + class kqueue_t : public poller_base_t + { + public: + + typedef void* handle_t; + + kqueue_t (const ctx_t &ctx_); + ~kqueue_t (); + + // "poller" concept. + handle_t add_fd (fd_t fd_, zmq::i_poll_events *events_); + void rm_fd (handle_t handle_); + void set_pollin (handle_t handle_); + void reset_pollin (handle_t handle_); + void set_pollout (handle_t handle_); + void reset_pollout (handle_t handle_); + void start (); + void stop (); + + static int max_fds (); + + private: + + // Main worker thread routine. + static void worker_routine (void *arg_); + + // Main event loop. + void loop (); + + // Reference to ZMQ context. + const ctx_t &ctx; + + // File descriptor referring to the kernel event queue. + fd_t kqueue_fd; + + // Adds the event to the kqueue. + void kevent_add (fd_t fd_, short filter_, void *udata_); + + // Deletes the event from the kqueue. + void kevent_delete (fd_t fd_, short filter_); + + struct poll_entry_t + { + fd_t fd; + bool flag_pollin; + bool flag_pollout; + zmq::i_poll_events *reactor; + }; + + // List of retired event sources. + typedef std::vector <poll_entry_t*> retired_t; + retired_t retired; + + // If true, thread is in the process of shutting down. + bool stopping; + + // Handle of the physical thread doing the I/O work. + thread_t worker; + + kqueue_t (const kqueue_t&); + const kqueue_t &operator = (const kqueue_t&); + +#ifdef HAVE_FORK + // the process that created this context. Used to detect forking. + pid_t pid; +#endif + }; + + typedef kqueue_t poller_t; + +} + +#endif + +#endif |