Initial commit

src/Interop/Async/Timer.php

@@ -0,0 +1,80 @@
+<?php
+
+namespace NoccyLabs\Ipc\Interop\Async;
+
+use NoccyLabs\Ipc\Signal\SignalHandler;
+
+
+/**
+ * Simple second-granularity timer for asynchronous events
+ * 
+ */
+class Timer
+{
+    private static $timers = null;
+
+    private $callback;
+
+    /**
+     * Constructor
+     *
+     * @param callable $callback
+     */
+    public function __construct(callable $callback)
+    {
+        $this->callback = $callback;
+        $this->seconds = $seconds;
+        self::registerTimer($this->callback);
+    }
+
+    /**
+     * Destructor
+     */
+    public function __destruct()
+    {
+        self::clearTimer($this->callback);
+    }
+
+    /**
+     * Register a timer callback function
+     *
+     * @param callable $timer
+     * @return void
+     */
+    private static function registerTimer(callable $timer)
+    {
+        if (self::$timers === null) {
+            $handler = new SignalHandler(SIGALRM, [ __CLASS__."::onSignal" ]);
+            pcntl_alarm(1);
+        }
+        self::$timers[] = $timer;
+    }
+
+    /**
+     * Remove a timer callback function
+     *
+     * @param callable $timer
+     * @return void
+     */
+    private static function clearTimer(callable $timer)
+    {
+        self::$timers = array_filter(self::$timers, function ($t) use ($timer) {
+            return $t !== $timer;
+        });
+    }
+
+    /**
+     * Handle signals when the alarm fires
+     *
+     * @return void
+     */
+    public static function onSignal()
+    {
+        foreach (self::$timers as $timer) {
+            call_user_func($timer);
+        }
+        pcntl_alarm(1);
+    }
+
+}
+