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100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
/*
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Copyright (c) 2007-2009 FastMQ Inc.
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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 Lesser GNU 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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Lesser GNU General Public License for more details.
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You should have received a copy of the Lesser GNU 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 __ZS_IO_THREAD_HPP_INCLUDED__
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#define __ZS_IO_THREAD_HPP_INCLUDED__
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#include <vector>
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#include "object.hpp"
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#include "i_thread.hpp"
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#include "i_poller.hpp"
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#include "i_poll_events.hpp"
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#include "fd_signaler.hpp"
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namespace zs
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{
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// Generic part of the I/O thread. Polling-mechanism-specific features
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// are implemented in separate "polling objects".
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class io_thread_t : public object_t, public i_poll_events, public i_thread
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{
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public:
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io_thread_t (class dispatcher_t *dispatcher_, int thread_slot_);
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// Launch the physical thread.
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void start ();
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// Ask underlying thread to stop.
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void stop ();
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// Wait till undelying thread terminates.
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void join ();
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// To be called when the whole infrastrucure is being closed (zs_term).
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// It's vital to call the individual commands in this sequence:
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// stop, join, shutdown.
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void shutdown ();
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// Returns signaler associated with this I/O thread.
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i_signaler *get_signaler ();
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// i_poll_events implementation.
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void in_event ();
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void out_event ();
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void timer_event ();
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// i_thread implementation.
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void attach_session (class session_t *session_);
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void detach_session (class session_t *session_);
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struct i_poller *get_poller ();
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// Command handlers.
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void process_stop ();
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// Returns load experienced by the I/O thread.
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int get_load ();
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private:
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// Clean-up.
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~io_thread_t ();
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// Poll thread gets notifications about incoming commands using
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// this signaler.
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fd_signaler_t signaler;
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// Handle associated with signaler's file descriptor.
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handle_t signaler_handle;
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// I/O multiplexing is performed using a poller object.
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i_poller *poller;
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// Vector of all sessions associated with this app thread.
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typedef std::vector <class session_t*> sessions_t;
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sessions_t sessions;
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};
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}
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#endif
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