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/*
Copyright (c) 2011-2012 250bpm s.r.o.
Copyright (c) 2011 Other contributors as noted in the AUTHORS file
This file is part of Crossroads I/O project.
Crossroads I/O 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.
Crossroads 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"
xs::reaper_t::reaper_t (class ctx_t *ctx_, uint32_t tid_) :
object_t (ctx_, tid_),
sockets (0),
terminating (false)
{
int rc = mailbox_init (&mailbox);
errno_assert (rc == 0);
io_thread = io_thread_t::create (ctx_, tid_);
xs_assert (io_thread);
mailbox_handle = io_thread->add_fd (mailbox_fd (&mailbox), this);
io_thread->set_pollin (mailbox_handle);
}
xs::reaper_t::~reaper_t ()
{
delete io_thread;
mailbox_close (&mailbox);
}
xs::mailbox_t *xs::reaper_t::get_mailbox ()
{
return &mailbox;
}
void xs::reaper_t::start ()
{
// Start the thread.
io_thread->start ();
}
void xs::reaper_t::stop ()
{
send_stop ();
}
void xs::reaper_t::in_event (fd_t fd_)
{
while (true) {
// Get the next command. If there is none, exit.
command_t cmd;
int rc = mailbox_recv (&mailbox, &cmd, 0);
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 xs::reaper_t::out_event (fd_t fd_)
{
xs_assert (false);
}
void xs::reaper_t::timer_event (handle_t handle_)
{
xs_assert (false);
}
void xs::reaper_t::process_stop ()
{
terminating = true;
// If there are no sockets being reaped finish immediately.
if (!sockets) {
send_done ();
io_thread->rm_fd (mailbox_handle);
io_thread->stop ();
}
}
void xs::reaper_t::process_reap (socket_base_t *socket_)
{
// Add the socket to the I/O thread.
socket_->start_reaping (io_thread);
++sockets;
}
void xs::reaper_t::process_reaped ()
{
--sockets;
// If reaped was already asked to terminate and there are no more sockets,
// finish immediately.
if (!sockets && terminating) {
send_done ();
io_thread->rm_fd (mailbox_handle);
io_thread->stop ();
}
}
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