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Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/lb.hpp')
-rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/lb.hpp | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/lb.hpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/lb.hpp new file mode 100644 index 00000000..b43a8ff1 --- /dev/null +++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/lb.hpp @@ -0,0 +1,88 @@ +/* + 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_LB_HPP_INCLUDED__ +#define __ZMQ_LB_HPP_INCLUDED__ + +#include "array.hpp" +#include "pipe.hpp" + +namespace zmq +{ + + // This class manages a set of outbound pipes. On send it load balances + // messages fairly among the pipes. + + class lb_t + { + public: + + lb_t (); + ~lb_t (); + + void attach (pipe_t *pipe_); + void activated (pipe_t *pipe_); + void pipe_terminated (pipe_t *pipe_); + + int send (msg_t *msg_); + + // Sends a message and stores the pipe that was used in pipe_. + // It is possible for this function to return success but keep pipe_ + // unset if the rest of a multipart message to a terminated pipe is + // being dropped. For the first frame, this will never happen. + int sendpipe (msg_t *msg_, pipe_t **pipe_); + + bool has_out (); + + private: + + // List of outbound pipes. + typedef array_t <pipe_t, 2> pipes_t; + pipes_t pipes; + + // Number of active pipes. All the active pipes are located at the + // beginning of the pipes array. + pipes_t::size_type active; + + // Points to the last pipe that the most recent message was sent to. + pipes_t::size_type current; + + // True if last we are in the middle of a multipart message. + bool more; + + // True if we are dropping current message. + bool dropping; + + lb_t (const lb_t&); + const lb_t &operator = (const lb_t&); + }; + +} + +#endif |