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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 __ZS_OBJECT_HPP_INCLUDED__
#define __ZS_OBJECT_HPP_INCLUDED__
#include "stdint.hpp"
namespace zs
{
// Base class for all objects that participate in inter-thread
// communication.
class object_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_);
protected:
// Derived object can use following functions to interact with
// global repositories. See dispatcher.hpp for function details.
int thread_slot_count ();
void create_pipe (class object_t *reader_parent_,
class object_t *writer_parent_, uint64_t hwm_, uint64_t lwm_,
class pipe_reader_t **reader_, class pipe_writer_t **writer_);
void destroy_pipe (class pipe_t *pipe_);
int register_inproc_endpoint (const char *endpoint_,
class session_t *session_);
class object_t *get_inproc_endpoint (const char *endpoint_);
void unregister_inproc_endpoints (class session_t *session_);
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_bind (object_t *destination_, class pipe_reader_t *reader_,
class session_t *peer_);
void send_head (object_t *destination_, uint64_t bytes_);
void send_tail (object_t *destination_, uint64_t bytes_);
void send_reg (object_t *destination_,
class simple_semaphore_t *smph_);
void send_reg_and_bind (object_t *destination_, class session_t *peer_,
bool flow_in_, bool flow_out_);
void send_unreg (object_t *destination_,
class simple_semaphore_t *smph_);
void send_engine (object_t *destination_, struct i_engine *engine_);
void send_terminate (object_t *destination_);
void send_terminate_ack (object_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_bind (class pipe_reader_t *reader_,
class session_t *peer_);
virtual void process_head (uint64_t bytes_);
virtual void process_tail (uint64_t bytes_);
virtual void process_reg (class simple_semaphore_t *smph_);
virtual void process_reg_and_bind (class session_t *peer_,
bool flow_in_, bool flow_out_);
virtual void process_unreg (class simple_semaphore_t *smph_);
virtual void process_engine (struct i_engine *engine_);
virtual void process_terminate ();
virtual void process_terminate_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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