114 lines
2.9 KiB
PHP

<?php
/*
*
* ____ _ _ __ __ _ __ __ ____
* | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
* | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
* |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
*
* This program 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.
*
* @author PocketMine Team
*
*
*/
namespace pocketmine\scheduler;
use pocketmine\Server;
class AsyncPool{
/** @var Server */
private $server;
protected $size;
/** @var AsyncTask[] */
private $tasks = [];
/** @var int[] */
private $taskWorkers = [];
/** @var AsyncWorker[] */
private $workers = [];
/** @var int[] */
private $workerUsage = [];
public function __construct(Server $server, $size){
$this->server = $server;
$this->size = (int) $size;
for($i = 0; $i < $this->size; ++$i){
$this->workerUsage[$i] = 0;
$this->workers[$i] = new AsyncWorker($server->getLoader());
$this->workers[$i]->start();
}
}
public function submitTask(AsyncTask $task){
if(isset($this->tasks[$task->getTaskId()]) or $task->isGarbage()){
return;
}
$this->tasks[$task->getTaskId()] = $task;
$selectedWorker = mt_rand(0, $this->size - 1);
$selectedTasks = $this->workerUsage[$selectedWorker];
for($i = 0; $i < $this->size; ++$i){
if($this->workerUsage[$i] < $selectedTasks){
$selectedWorker = $i;
$selectedTasks = $this->workerUsage[$i];
}
}
$this->workers[$selectedWorker]->stack($task);
$this->workerUsage[$selectedWorker]++;
$this->taskWorkers[$task->getTaskId()] = $selectedWorker;
}
private function removeTask(AsyncTask $task){
if(isset($this->taskWorkers[$task->getTaskId()])){
$this->workers[$w = $this->taskWorkers[$task->getTaskId()]]->unstack($task);
$this->workerUsage[$w]--;
}
unset($this->tasks[$task->getTaskId()]);
unset($this->taskWorkers[$task->getTaskId()]);
}
public function removeTasks(){
foreach($this->tasks as $task){
$this->removeTask($task);
}
for($i = 0; $i < $this->size; ++$i){
$this->workerUsage[$i] = 0;
}
$this->taskWorkers = [];
$this->tasks = [];
}
public function collectTasks(){
foreach($this->tasks as $task){
if($task->isGarbage()){
$task->onCompletion($this->server);
$this->removeTask($task);
}elseif($task->isTerminated()){
$info = $task->getTerminationInfo();
$this->removeTask($task);
$this->server->getLogger()->critical("Could not execute asynchronous task " . (new \ReflectionClass($task))->getShortName() . ": " . $info["message"]);
$this->server->getLogger()->critical("On ".$info["scope"].", line ".$info["line"] .", ".$info["function"]."()");
}
}
}
}