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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* i/o manager to watch for a dead parent process
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category QueueManager
* @package StatusNet
* @author Brion Vibber <brion@status.net>
* @copyright 2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
class ProcessManager extends IoManager
{
protected $socket;
public static function get()
{
throw new Exception("Must pass ProcessManager per-instance");
}
public function __construct($socket)
{
$this->socket = $socket;
}
/**
* Tell the i/o queue master if and how we can handle multi-site
* processes.
*
* Return one of:
* IoManager::SINGLE_ONLY
* IoManager::INSTANCE_PER_SITE
* IoManager::INSTANCE_PER_PROCESS
*/
public static function multiSite()
{
return IoManager::INSTANCE_PER_PROCESS;
}
/**
* We won't get any input on it, but if it's broken we'll
* know something's gone horribly awry.
*
* @return array of resources
*/
function getSockets()
{
return array($this->socket);
}
/**
* See if the parent died and request a shutdown...
*
* @param resource $socket
* @return boolean success
*/
function handleInput($socket)
{
if (feof($socket)) {
common_log(LOG_INFO, "Parent process exited; shutting down child.");
$this->master->requestShutdown();
}
return true;
}
}
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