--- old/src/hotspot/share/utilities/macros.hpp	2019-04-04 15:12:08.906098635 -0700
+++ new/src/hotspot/share/utilities/macros.hpp	2019-04-04 15:12:08.354079778 -0700
@@ -640,4 +640,10 @@
 #define NOT_CDS_JAVA_HEAP_RETURN_(code) { return code; }
 #endif
 
+// THIS_FILE will always be the relative path to the source file from the
+// workspace root. FILE_MACRO_OFFSET is calculated in configure to be the
+// absolute path length of the workspace root dir (or 0 if
+// -fmacro-prefix-map is used to limit the length of __FILE__).
+#define THIS_FILE (__FILE__ + FILE_MACRO_OFFSET)
+
 #endif // SHARE_UTILITIES_MACROS_HPP