--- a/src/parallel_execution/context.h	Mon Nov 06 19:04:41 2017 +0900
+++ b/src/parallel_execution/context.h	Tue Nov 21 04:28:36 2017 +0900
@@ -128,7 +128,7 @@
         long size;
         long len;
         struct Queue* wait; // tasks waiting this dataGear
-    } meta;
+    } Meta;
     struct Context Context;
     struct Time {
         union Data* time;
@@ -301,6 +301,16 @@
             Black,
         } color;
     } Node;
+    struct Atomic {
+        union Data* atomic;
+        union Data* data;
+        enum Code checkAndSet;
+        enum Code next;
+        enum Code fail;
+    } Atomic;
+    struct AtomicReference {
+        union Data* data;
+    } AtomicReference;
     struct Semaphore {
         union Data* semaphore;
         enum Code p;