Added support for graceful shutdown

source/eventy/config.d

@@ -18,6 +18,9 @@ public struct EngineSettings
 
     /* If `holdOffMode` is `SLEEP` then set the duration for the sleep */
     Duration sleepTime;
+
+    /* Calling `shutdown()` will wait for any pending events to be dispatched before shutting down */
+    bool gracefulShutdown;
 }
 
 /**

source/eventy/engine.d

@@ -189,6 +189,9 @@ public final class Engine : Thread
         defaultSettings.holdOffMode = HoldOffMode.SLEEP;
         defaultSettings.sleepTime = dur!("msecs")(200);
 
+        /* Do not gracefully shutdown */
+        defaultSettings.gracefulShutdown = false;
+
         this(defaultSettings);
     }
 
@@ -313,6 +316,12 @@ public final class Engine : Thread
     {
         /* TODO: Insert a lock here, that dispatch should adhere too as well */
 
+        /* Wait for any pendings events (if configured) */
+        if(settings.gracefulShutdown)
+        {
+            while(hasPendingEvents()) {}
+        }
+
         /* Stop the loop */
         running = false;
     }