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/*
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 <http://www.gnu.org/licenses/>.
*/
#ifndef __ZMQ_OBJECT_HPP_INCLUDED__
#define __ZMQ_OBJECT_HPP_INCLUDED__
#include "stdint.hpp"
namespace zmq
{
// Base class for all objects that participate in inter-thread
// communication.
class object_t
{
// Repository of sessions needs to use caller's send_* functions
// when creating new session. TODO: Get rid of this dependency.
friend class socket_base_t;
public:
object_t (class dispatcher_t *dispatcher_, int thread_slot_);
object_t (object_t *parent_);
~object_t ();
int get_thread_slot ();
void process_command (struct command_t &cmd_);
// Allow pipe to access corresponding dispatcher functions.
void register_pipe (class pipe_t *pipe_);
void unregister_pipe (class pipe_t *pipe_);
protected:
// Derived object can use following functions to interact with
// global repositories. See dispatcher.hpp for function details.
int thread_slot_count ();
class io_thread_t *choose_io_thread (uint64_t taskset_);
// Derived object can use these functions to send commands
// to other objects.
void send_stop ();
void send_plug (class owned_t *destination_);
void send_own (class socket_base_t *destination_,
class owned_t *object_);
void send_attach (class session_t *destination_,
struct i_engine *engine_);
void send_bind (object_t *destination_, class owned_t *session_,
class reader_t *in_pipe_, class writer_t *out_pipe_);
void send_revive (class object_t *destination_);
void send_pipe_term (class writer_t *destination_);
void send_pipe_term_ack (class reader_t *destination_);
void send_term_req (class socket_base_t *destination_,
class owned_t *object_);
void send_term (class owned_t *destination_);
void send_term_ack (class socket_base_t *destination_);
// These handlers can be overloaded by the derived objects. They are
// called when command arrives from another thread.
virtual void process_stop ();
virtual void process_plug ();
virtual void process_own (class owned_t *object_);
virtual void process_attach (struct i_engine *engine_);
virtual void process_bind (class owned_t *session_,
class reader_t *in_pipe_, class writer_t *out_pipe_);
virtual void process_revive ();
virtual void process_pipe_term ();
virtual void process_pipe_term_ack ();
virtual void process_term_req (class owned_t *object_);
virtual void process_term ();
virtual void process_term_ack ();
// Pointer to the root of the infrastructure.
class dispatcher_t *dispatcher;
// Slot ID of the thread the object belongs to.
int thread_slot;
private:
void send_command (command_t &cmd_);
object_t (const object_t&);
void operator = (const object_t&);
};
}
#endif
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