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05d908492d
Sockets may now be migrated between OS threads; sockets may not be used by more than one thread at any time. To migrate a socket to another thread the caller must ensure that a full memory barrier is called before using the socket from the target thread. The new zmq_close() semantics implement the behaviour discussed at: http://lists.zeromq.org/pipermail/zeromq-dev/2010-July/004244.html Specifically, zmq_close() is now deterministic and while it still returns immediately, it does not discard any data that may still be queued for sending. Further, zmq_term() will now block until all outstanding data has been sent. TODO: Many bugs have been introduced, needs testing. Further, SO_LINGER or an equivalent mechanism (possibly a configurable timeout to zmq_term()) needs to be implemented.
105 lines
2.3 KiB
C++
105 lines
2.3 KiB
C++
/*
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Copyright (c) 2007-2010 iMatix Corporation
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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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#include <new>
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#include "../include/zmq.h"
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#include "io_thread.hpp"
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#include "platform.hpp"
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#include "err.hpp"
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#include "ctx.hpp"
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zmq::io_thread_t::io_thread_t (ctx_t *ctx_, uint32_t slot_) :
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object_t (ctx_, slot_)
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{
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poller = new (std::nothrow) poller_t;
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zmq_assert (poller);
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signaler_handle = poller->add_fd (signaler.get_fd (), this);
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poller->set_pollin (signaler_handle);
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}
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zmq::io_thread_t::~io_thread_t ()
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{
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delete poller;
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}
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void zmq::io_thread_t::start ()
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{
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// Start the underlying I/O thread.
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poller->start ();
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}
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void zmq::io_thread_t::stop ()
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{
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send_stop ();
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}
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zmq::signaler_t *zmq::io_thread_t::get_signaler ()
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{
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return &signaler;
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}
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int zmq::io_thread_t::get_load ()
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{
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return poller->get_load ();
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}
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void zmq::io_thread_t::in_event ()
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{
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// TODO: Do we want to limit number of commands I/O thread can
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// process in a single go?
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while (true) {
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// Get the next command. If there is none, exit.
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command_t cmd;
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if (!signaler.recv (&cmd, false))
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break;
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// Process the command.
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cmd.destination->process_command (cmd);
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}
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}
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void zmq::io_thread_t::out_event ()
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{
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// We are never polling for POLLOUT here. This function is never called.
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zmq_assert (false);
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}
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void zmq::io_thread_t::timer_event ()
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{
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// No timers here. This function is never called.
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zmq_assert (false);
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}
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zmq::poller_t *zmq::io_thread_t::get_poller ()
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{
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zmq_assert (poller);
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return poller;
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}
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void zmq::io_thread_t::process_stop ()
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{
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poller->rm_fd (signaler_handle);
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poller->stop ();
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}
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