--- a/hotspot/src/share/vm/runtime/os.hpp	Tue May 10 03:37:36 2016 +0000
+++ b/hotspot/src/share/vm/runtime/os.hpp	Mon May 09 15:46:12 2016 +0200
@@ -521,6 +521,8 @@
   static int fsync(int fd);
   static int available(int fd, jlong *bytes);
   static int get_fileno(FILE* fp);
+  static void flockfile(FILE* fp);
+  static void funlockfile(FILE* fp);
 
   static int compare_file_modified_times(const char* file1, const char* file2);