add gc write barrier file

cch123 · cch123 · commit d5b51b37e4e0 · 2021-06-12T20:10:37.000+08:00
diff --git a/gc_write_barrier.md b/gc_write_barrier.md
@@ -0,0 +1,4 @@
+# GC write barrier 详解
+
+TODO
+

-Original file line number
+Diff line change
@@ @@ -0,0 +1,4 @@ @@
 +# GC write barrier 详解
++
 +TODO
++