object.cpp

/*
    Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file

    This file is part of libzmq, the ZeroMQ core engine in C++.

    libzmq is free software; you can redistribute it and/or modify it under
    the terms of the GNU Lesser General Public License (LGPL) as published
    by the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    As a special exception, the Contributors give you permission to link
    this library with independent modules to produce an executable,
    regardless of the license terms of these independent modules, and to
    copy and distribute the resulting executable under terms of your choice,
    provided that you also meet, for each linked independent module, the
    terms and conditions of the license of that module. An independent
    module is a module which is not derived from or based on this library.
    If you modify this library, you must extend this exception to your
    version of the library.

    libzmq 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 <http://www.gnu.org/licenses/>.
*/

#include <string.h>
#include <stdarg.h>

#include "object.hpp"
#include "ctx.hpp"
#include "err.hpp"
#include "pipe.hpp"
#include "io_thread.hpp"
#include "session_base.hpp"
#include "socket_base.hpp"

zmq::object_t::object_t (ctx_t *ctx_, uint32_t tid_) :
    ctx (ctx_),
    tid (tid_)
{
}

zmq::object_t::object_t (object_t *parent_) :
    ctx (parent_->ctx),
    tid (parent_->tid)
{
}

zmq::object_t::~object_t ()
{
}

uint32_t zmq::object_t::get_tid ()
{
    return tid;
}

void zmq::object_t::set_tid(uint32_t id)
{
    tid = id;
}

zmq::ctx_t *zmq::object_t::get_ctx ()
{
    return ctx;
}

void zmq::object_t::process_command (command_t &cmd_)
{
    switch (cmd_.type) {

    case command_t::activate_read:
        process_activate_read ();
        break;

    case command_t::activate_write:
        process_activate_write (cmd_.args.activate_write.msgs_read);
        break;

    case command_t::stop:
        process_stop ();
        break;

    case command_t::plug:
        process_plug ();
        process_seqnum ();
        break;

    case command_t::own:
        process_own (cmd_.args.own.object);
        process_seqnum ();
        break;

    case command_t::attach:
        process_attach (cmd_.args.attach.engine);
        process_seqnum ();
        break;

    case command_t::bind:
        process_bind (cmd_.args.bind.pipe);
        process_seqnum ();
        break;

    case command_t::hiccup:
        process_hiccup (cmd_.args.hiccup.pipe);
        break;

    case command_t::pipe_term:
        process_pipe_term ();
        break;

    case command_t::pipe_term_ack:
        process_pipe_term_ack ();
        break;

    case command_t::term_req:
        process_term_req (cmd_.args.term_req.object);
        break;
    
    case command_t::term:
        process_term (cmd_.args.term.linger);
        break;

    case command_t::term_ack:
        process_term_ack ();
        break;

    case command_t::reap:
        process_reap (cmd_.args.reap.socket);
        break;

    case command_t::reaped:
        process_reaped ();
        break;

    case command_t::inproc_connected:
        process_seqnum ();
        break;

    case command_t::done:
    default:
        zmq_assert (false);
    }
}

int zmq::object_t::register_endpoint (const char *addr_,
        const endpoint_t &endpoint_)
{
    return ctx->register_endpoint (addr_, endpoint_);
}

int zmq::object_t::unregister_endpoint (
        const std::string &addr_, socket_base_t *socket_)
{
    return ctx->unregister_endpoint (addr_, socket_);
}

void zmq::object_t::unregister_endpoints (socket_base_t *socket_)
{
    return ctx->unregister_endpoints (socket_);
}

zmq::endpoint_t zmq::object_t::find_endpoint (const char *addr_)
{
    return ctx->find_endpoint (addr_);
}

void zmq::object_t::pend_connection (const std::string &addr_,
        const endpoint_t &endpoint_, pipe_t **pipes_)
{
    ctx->pend_connection (addr_, endpoint_, pipes_);
}

void zmq::object_t::connect_pending (const char *addr_, zmq::socket_base_t *bind_socket_)
{
    return ctx->connect_pending(addr_, bind_socket_);
}

void zmq::object_t::destroy_socket (socket_base_t *socket_)
{
    ctx->destroy_socket (socket_);
}

zmq::io_thread_t *zmq::object_t::choose_io_thread (uint64_t affinity_)
{
    return ctx->choose_io_thread (affinity_);
}

void zmq::object_t::send_stop ()
{
    //  'stop' command goes always from administrative thread to
    //  the current object. 
    command_t cmd;
    cmd.destination = this;
    cmd.type = command_t::stop;
    ctx->send_command (tid, cmd);
}

void zmq::object_t::send_plug (own_t *destination_, bool inc_seqnum_)
{
    if (inc_seqnum_)
        destination_->inc_seqnum ();

    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::plug;
    send_command (cmd);
}

void zmq::object_t::send_own (own_t *destination_, own_t *object_)
{
    destination_->inc_seqnum ();
    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::own;
    cmd.args.own.object = object_;
    send_command (cmd);
}

void zmq::object_t::send_attach (session_base_t *destination_,
    i_engine *engine_, bool inc_seqnum_)
{
    if (inc_seqnum_)
        destination_->inc_seqnum ();

    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::attach;
    cmd.args.attach.engine = engine_;
    send_command (cmd);
}

void zmq::object_t::send_bind (own_t *destination_, pipe_t *pipe_,
    bool inc_seqnum_)
{
    if (inc_seqnum_)
        destination_->inc_seqnum ();

    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::bind;
    cmd.args.bind.pipe = pipe_;
    send_command (cmd);
}

void zmq::object_t::send_activate_read (pipe_t *destination_)
{
    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::activate_read;
    send_command (cmd);
}

void zmq::object_t::send_activate_write (pipe_t *destination_,
    uint64_t msgs_read_)
{
    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::activate_write;
    cmd.args.activate_write.msgs_read = msgs_read_;
    send_command (cmd);
}

void zmq::object_t::send_hiccup (pipe_t *destination_, void *pipe_)
{
    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::hiccup;
    cmd.args.hiccup.pipe = pipe_;
    send_command (cmd);
}

void zmq::object_t::send_pipe_term (pipe_t *destination_)
{
    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::pipe_term;
    send_command (cmd);
}

void zmq::object_t::send_pipe_term_ack (pipe_t *destination_)
{
    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::pipe_term_ack;
    send_command (cmd);
}

void zmq::object_t::send_term_req (own_t *destination_,
    own_t *object_)
{
    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::term_req;
    cmd.args.term_req.object = object_;
    send_command (cmd);
}

void zmq::object_t::send_term (own_t *destination_, int linger_)
{
    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::term;
    cmd.args.term.linger = linger_;
    send_command (cmd);
}

void zmq::object_t::send_term_ack (own_t *destination_)
{
    command_t cmd;
    cmd.destination = destination_;
    cmd.type = command_t::term_ack;
    send_command (cmd);
}

void zmq::object_t::send_reap (class socket_base_t *socket_)
{
    command_t cmd;
    cmd.destination = ctx->get_reaper ();
    cmd.type = command_t::reap;
    cmd.args.reap.socket = socket_;
    send_command (cmd);
}

void zmq::object_t::send_reaped ()
{
    command_t cmd;
    cmd.destination = ctx->get_reaper ();
    cmd.type = command_t::reaped;
    send_command (cmd);
}

void zmq::object_t::send_inproc_connected (zmq::socket_base_t *socket_)
{
    command_t cmd;
    cmd.destination = socket_;
    cmd.type = command_t::inproc_connected;
    send_command (cmd);
}

void zmq::object_t::send_done ()
{
    command_t cmd;
    cmd.destination = NULL;
    cmd.type = command_t::done;
    ctx->send_command (ctx_t::term_tid, cmd);
}

void zmq::object_t::process_stop ()
{
    zmq_assert (false);
}

void zmq::object_t::process_plug ()
{
    zmq_assert (false);
}

void zmq::object_t::process_own (own_t *)
{
    zmq_assert (false);
}

void zmq::object_t::process_attach (i_engine *)
{
    zmq_assert (false);
}

void zmq::object_t::process_bind (pipe_t *)
{
    zmq_assert (false);
}

void zmq::object_t::process_activate_read ()
{
    zmq_assert (false);
}

void zmq::object_t::process_activate_write (uint64_t)
{
    zmq_assert (false);
}

void zmq::object_t::process_hiccup (void *)
{
    zmq_assert (false);
}

void zmq::object_t::process_pipe_term ()
{
    zmq_assert (false);
}

void zmq::object_t::process_pipe_term_ack ()
{
    zmq_assert (false);
}

void zmq::object_t::process_term_req (own_t *)
{
    zmq_assert (false);
}

void zmq::object_t::process_term (int)
{
    zmq_assert (false);
}

void zmq::object_t::process_term_ack ()
{
    zmq_assert (false);
}

void zmq::object_t::process_reap (class socket_base_t *)
{
    zmq_assert (false);
}

void zmq::object_t::process_reaped ()
{
    zmq_assert (false);
}

void zmq::object_t::process_seqnum ()
{
    zmq_assert (false);
}

void zmq::object_t::send_command (command_t &cmd_)
{
    ctx->send_command (cmd_.destination->get_tid (), cmd_);
}