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6a18f59532
icanhasall is cute (for now), but the effect of the variable is clear only after tracking down its origin reading the commit. This change is intended to make it easier for people to have some intuition about its effect from its name.
93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
/*
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Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ZMQ_XSUB_HPP_INCLUDED__
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#define __ZMQ_XSUB_HPP_INCLUDED__
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#include "socket_base.hpp"
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#include "session_base.hpp"
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#include "dist.hpp"
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#include "fq.hpp"
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#include "trie.hpp"
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namespace zmq
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{
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class ctx_t;
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class pipe_t;
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class io_thread_t;
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class xsub_t :
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public socket_base_t
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{
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public:
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xsub_t (zmq::ctx_t *parent_, uint32_t tid_, int sid_);
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~xsub_t ();
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protected:
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// Overloads of functions from socket_base_t.
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void xattach_pipe (zmq::pipe_t *pipe_, bool subscribe_to_all_);
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int xsend (zmq::msg_t *msg_);
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bool xhas_out ();
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int xrecv (zmq::msg_t *msg_);
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bool xhas_in ();
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void xread_activated (zmq::pipe_t *pipe_);
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void xwrite_activated (zmq::pipe_t *pipe_);
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void xhiccuped (pipe_t *pipe_);
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void xpipe_terminated (zmq::pipe_t *pipe_);
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private:
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// Check whether the message matches at least one subscription.
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bool match (zmq::msg_t *msg_);
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// Function to be applied to the trie to send all the subsciptions
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// upstream.
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static void send_subscription (unsigned char *data_, size_t size_,
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void *arg_);
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// Fair queueing object for inbound pipes.
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fq_t fq;
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// Object for distributing the subscriptions upstream.
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dist_t dist;
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// The repository of subscriptions.
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trie_t subscriptions;
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// If true, 'message' contains a matching message to return on the
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// next recv call.
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bool has_message;
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msg_t message;
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// If true, part of a multipart message was already received, but
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// there are following parts still waiting.
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bool more;
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xsub_t (const xsub_t&);
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const xsub_t &operator = (const xsub_t&);
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};
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}
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#endif
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