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/*
Copyright (c) 2007-2010 iMatix Corporation
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser 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
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 "reaper.hpp"
#include "socket_base.hpp"
#include "err.hpp"
zmq::reaper_t::reaper_t (class ctx_t *ctx_, uint32_t tid_) :
object_t (ctx_, tid_),
terminating (false),
has_timer (false)
{
poller = new (std::nothrow) poller_t;
zmq_assert (poller);
mailbox_handle = poller->add_fd (mailbox.get_fd (), this);
poller->set_pollin (mailbox_handle);
}
zmq::reaper_t::~reaper_t ()
{
delete poller;
}
zmq::mailbox_t *zmq::reaper_t::get_mailbox ()
{
return &mailbox;
}
void zmq::reaper_t::start ()
{
// Start the thread.
poller->start ();
}
void zmq::reaper_t::stop ()
{
send_stop ();
}
void zmq::reaper_t::in_event ()
{
while (true) {
// Get the next command. If there is none, exit.
command_t cmd;
int rc = mailbox.recv (&cmd, false);
if (rc != 0 && errno == EINTR)
continue;
if (rc != 0 && errno == EAGAIN)
break;
errno_assert (rc == 0);
// Process the command.
cmd.destination->process_command (cmd);
}
}
void zmq::reaper_t::out_event ()
{
// We are never polling for POLLOUT here. This function is never called.
zmq_assert (false);
}
void zmq::reaper_t::timer_event (int id_)
{
zmq_assert (has_timer);
has_timer = false;
reap ();
}
void zmq::reaper_t::reap ()
{
// Try to reap each socket in the list.
for (sockets_t::iterator it = sockets.begin (); it != sockets.end ();) {
if ((*it)->reap ()) {
// MSVC version of STL requires this to be done a spacial way...
#if defined _MSC_VER
it = sockets.erase (it);
#else
sockets.erase (it);
#endif
}
else
++it;
}
// If there are still sockets to reap, wait a while, then try again.
if (!sockets.empty () && !has_timer) {
poller->add_timer (1 , this, 0);
has_timer = true;
return;
}
// No more sockets and the context is already shutting down.
if (terminating) {
send_done ();
poller->rm_fd (mailbox_handle);
poller->stop ();
return;
}
}
void zmq::reaper_t::process_stop ()
{
terminating = true;
if (sockets.empty ()) {
send_done ();
poller->rm_fd (mailbox_handle);
poller->stop ();
}
}
void zmq::reaper_t::process_reap (socket_base_t *socket_)
{
// Start termination of associated I/O object hierarchy.
socket_->terminate ();
sockets.push_back (socket_);
reap ();
}
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