/* Copyright (c) 2010-2012 250bpm s.r.o. Copyright (c) 2010-2011 Other contributors as noted in the AUTHORS file This file is part of Crossroads I/O project. Crossroads I/O is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Crossroads 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 . */ #ifndef __XS_XSUB_HPP_INCLUDED__ #define __XS_XSUB_HPP_INCLUDED__ #include "socket_base.hpp" #include "session_base.hpp" #include "dist.hpp" #include "fq.hpp" #include "trie.hpp" namespace xs { class ctx_t; class pipe_t; class io_thread_t; class xsub_t : public socket_base_t { public: xsub_t (xs::ctx_t *parent_, uint32_t tid_, int sid_); ~xsub_t (); protected: // Overloads of functions from socket_base_t. void xattach_pipe (xs::pipe_t *pipe_, bool icanhasall_); int xsend (xs::msg_t *msg_, int flags_); bool xhas_out (); int xrecv (xs::msg_t *msg_, int flags_); bool xhas_in (); void xread_activated (xs::pipe_t *pipe_); void xwrite_activated (xs::pipe_t *pipe_); void xhiccuped (pipe_t *pipe_); void xterminated (xs::pipe_t *pipe_); private: // Check whether the message matches at least one subscription. bool match (xs::msg_t *msg_); // Function to be applied to the trie to send all the subsciptions // upstream. static void send_subscription (unsigned char *data_, size_t size_, void *arg_); // Fair queueing object for inbound pipes. fq_t fq; // Object for distributing the subscriptions upstream. dist_t dist; // The repository of subscriptions. trie_t subscriptions; // If true, 'message' contains a matching message to return on the // next recv call. bool has_message; msg_t message; // If true, part of a multipart message was already received, but // there are following parts still waiting. bool more; xsub_t (const xsub_t&); const xsub_t &operator = (const xsub_t&); }; class xsub_session_t : public session_base_t { public: xsub_session_t (class io_thread_t *io_thread_, bool connect_, socket_base_t *socket_, const options_t &options_, const char *protocol_, const char *address_); ~xsub_session_t (); private: xsub_session_t (const xsub_session_t&); const xsub_session_t &operator = (const xsub_session_t&); }; } #endif