Add custom MutexRuntimeException

Author: dmitry-ivanov

src/MutexRuntimeException.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace Illuminated\Console;
+
+use RuntimeException;
+
+class MutexRuntimeException extends RuntimeException
+{
+}

src/WithoutOverlapping.php

@@ -19,7 +19,7 @@ protected function initializeMutex()
     {
         $mutex = new Mutex($this);
         if (!$mutex->acquireLock($this->getMutexTimeout())) {
-            throw new RuntimeException('Command is running now!');
+            throw new MutexRuntimeException('Command is running now!');
         }
 
         register_shutdown_function([$this, 'releaseMutexLock'], $mutex);