diff --git a/src/net/torvald/terrarum/concurrent/ThreadParallel.kt b/src/net/torvald/terrarum/concurrent/ThreadParallel.kt
index 3166b0ce4..31fa1b439 100644
--- a/src/net/torvald/terrarum/concurrent/ThreadParallel.kt
+++ b/src/net/torvald/terrarum/concurrent/ThreadParallel.kt
@@ -25,6 +25,14 @@ object ThreadParallel {
         pool.forEach { it?.start() }
     }
 
+    /**
+     * Start all thread in the pool and wait for them to all die. If the thread in the pool is NULL, it will simply ignored.
+     */
+    fun startAllWaitForDie() {
+        pool.forEach { it?.start() }
+        pool.forEach { it?.join() }
+    }
+
     /**
      * Primitive locking
      */