代码初始化

addons/crontab/library/SimpleFork/FixedPool.php

@@ -0,0 +1,67 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Jenner
+ * Date: 2015/11/2
+ * Time: 17:45
+ */
+
+namespace Jenner\SimpleFork;
+
+
+/**
+ * fixed pool
+ *
+ * @package Jenner\SimpleFork
+ */
+class FixedPool extends AbstractPool
+{
+    /**
+     * @var int max process count
+     */
+    protected $max;
+
+    /**
+     * @param int $max
+     */
+    public function __construct($max = 4)
+    {
+        $this->max = $max;
+    }
+
+    public function execute(Process $process)
+    {
+        Utils::checkOverwriteRunMethod(get_class($process));
+
+        if ($this->aliveCount() < $this->max && !$process->isStarted()) {
+            $process->start();
+        }
+        array_push($this->processes, $process);
+    }
+
+    /**
+     * wait for all process done
+     *
+     * @param bool $block block the master process
+     * to keep the sub process count all the time
+     * @param int $interval check time interval
+     */
+    public function wait($block = false, $interval = 100)
+    {
+        do {
+            if ($this->isFinished()) {
+                return;
+            }
+            parent::wait(false);
+            if ($this->aliveCount() < $this->max) {
+                foreach ($this->processes as $process) {
+                    if ($process->isStarted()) continue;
+                    $process->start();
+                    if ($this->aliveCount() >= $this->max) break;
+                }
+            }
+            $block ? usleep($interval) : null;
+        } while ($block);
+    }
+
+}