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Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/router.hpp')
-rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/router.hpp | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/router.hpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/router.hpp new file mode 100644 index 00000000..9877217f --- /dev/null +++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/router.hpp @@ -0,0 +1,140 @@ +/* + 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_ROUTER_HPP_INCLUDED__ +#define __ZMQ_ROUTER_HPP_INCLUDED__ + +#include <map> + +#include "socket_base.hpp" +#include "session_base.hpp" +#include "stdint.hpp" +#include "blob.hpp" +#include "msg.hpp" +#include "fq.hpp" + +namespace zmq +{ + + class ctx_t; + class pipe_t; + + // TODO: This class uses O(n) scheduling. Rewrite it to use O(1) algorithm. + class router_t : + public socket_base_t + { + public: + + router_t (zmq::ctx_t *parent_, uint32_t tid_, int sid); + ~router_t (); + + // Overrides of functions from socket_base_t. + void xattach_pipe (zmq::pipe_t *pipe_, bool subscribe_to_all_); + int xsetsockopt (int option_, const void *optval_, size_t optvallen_); + int xsend (zmq::msg_t *msg_); + int xrecv (zmq::msg_t *msg_); + bool xhas_in (); + bool xhas_out (); + void xread_activated (zmq::pipe_t *pipe_); + void xwrite_activated (zmq::pipe_t *pipe_); + void xpipe_terminated (zmq::pipe_t *pipe_); + + protected: + + // Rollback any message parts that were sent but not yet flushed. + int rollback (); + blob_t get_credential () const; + + private: + + // Receive peer id and update lookup map + bool identify_peer (pipe_t *pipe_); + + // Fair queueing object for inbound pipes. + fq_t fq; + + // True iff there is a message held in the pre-fetch buffer. + bool prefetched; + + // If true, the receiver got the message part with + // the peer's identity. + bool identity_sent; + + // Holds the prefetched identity. + msg_t prefetched_id; + + // Holds the prefetched message. + msg_t prefetched_msg; + + // If true, more incoming message parts are expected. + bool more_in; + + struct outpipe_t + { + zmq::pipe_t *pipe; + bool active; + }; + + // We keep a set of pipes that have not been identified yet. + std::set <pipe_t*> anonymous_pipes; + + // Outbound pipes indexed by the peer IDs. + typedef std::map <blob_t, outpipe_t> outpipes_t; + outpipes_t outpipes; + + // The pipe we are currently writing to. + zmq::pipe_t *current_out; + + // If true, more outgoing message parts are expected. + bool more_out; + + // Routing IDs are generated. It's a simple increment and wrap-over + // algorithm. This value is the next ID to use (if not used already). + uint32_t next_rid; + + // If true, report EAGAIN to the caller instead of silently dropping + // the message targeting an unknown peer. + bool mandatory; + bool raw_sock; + + // if true, send an empty message to every connected router peer + bool probe_router; + + // If true, the router will reassign an identity upon encountering a + // name collision. The new pipe will take the identity, the old pipe + // will be terminated. + bool handover; + + router_t (const router_t&); + const router_t &operator = (const router_t&); + }; + +} + +#endif |