From cb1b6fe32cbf3c7cf5961bb4156f2de743693a3a Mon Sep 17 00:00:00 2001 From: Martin Sustrik Date: Mon, 21 Sep 2009 14:39:59 +0200 Subject: initial version of req/rep sockets --- src/req.hpp | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 src/req.hpp (limited to 'src/req.hpp') diff --git a/src/req.hpp b/src/req.hpp new file mode 100644 index 0000000..9158fbe --- /dev/null +++ b/src/req.hpp @@ -0,0 +1,84 @@ +/* + Copyright (c) 2007-2009 FastMQ Inc. + + This file is part of 0MQ. + + 0MQ is free software; you can redistribute it and/or modify it under + the terms of the Lesser GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + 0MQ 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 + Lesser GNU General Public License for more details. + + You should have received a copy of the Lesser GNU General Public License + along with this program. If not, see . +*/ + +#ifndef __ZMQ_REQ_INCLUDED__ +#define __ZMQ_REQ_INCLUDED__ + +#include "socket_base.hpp" +#include "yarray.hpp" + +namespace zmq +{ + + class req_t : public socket_base_t + { + public: + + req_t (class app_thread_t *parent_); + ~req_t (); + + // Overloads of functions from socket_base_t. + bool xrequires_in (); + bool xrequires_out (); + void xattach_pipes (class reader_t *inpipe_, class writer_t *outpipe_); + void xdetach_inpipe (class reader_t *pipe_); + void xdetach_outpipe (class writer_t *pipe_); + void xkill (class reader_t *pipe_); + void xrevive (class reader_t *pipe_); + int xsetsockopt (int option_, const void *optval_, size_t optvallen_); + int xsend (struct zmq_msg_t *msg_, int flags_); + int xflush (); + int xrecv (struct zmq_msg_t *msg_, int flags_); + + private: + + // List in outbound and inbound pipes. Note that the two lists are + // always in sync. I.e. outpipe with index N communicates with the + // same session as inpipe with index N. + // + // TODO: Once we have queue limits in place, list of active outpipes + // is to be held (presumably by stacking active outpipes at + // the beginning of the array). We don't have to do the same thing for + // inpipes, because we know which pipe we want to read the + // reply from. + typedef yarray_t out_pipes_t; + out_pipes_t out_pipes; + typedef yarray_t in_pipes_t; + in_pipes_t in_pipes; + + // Req_t load-balances the requests - 'current' points to the session + // that's processing the request at the moment. + out_pipes_t::size_type current; + + // If true, request was already sent and reply wasn't received yet. + bool waiting_for_reply; + + // True, if read can be attempted from the reply pipe. + bool reply_pipe_active; + + // Pipe we are awaiting the reply from. + class reader_t *reply_pipe; + + req_t (const req_t&); + void operator = (const req_t&); + }; + +} + +#endif -- cgit v1.2.3