--- old/src/hotspot/share/utilities/events.hpp	2018-05-01 09:30:58.090122885 +0900
+++ new/src/hotspot/share/utilities/events.hpp	2018-05-01 09:30:57.931122294 +0900
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -143,10 +143,10 @@
   }
 };
 
-// A simple ring buffer of fixed size text messages.
-class StringEventLog : public EventLogBase<StringLogMessage> {
+// A simple ring buffer of text messages.
+class StringEventLog : public EventLogBase<FormatBufferDynamic> {
  public:
-  StringEventLog(const char* name, int count = LogEventsBufferEntries) : EventLogBase<StringLogMessage>(name, count) {}
+  StringEventLog(const char* name, int count = LogEventsBufferEntries) : EventLogBase<FormatBufferDynamic>(name, count) {}
 
   void logv(Thread* thread, const char* format, va_list ap) ATTRIBUTE_PRINTF(3, 0) {
     if (!should_log()) return;
@@ -282,9 +282,9 @@
   out->cr();
 }
 
-// Implement a printing routine for the StringLogMessage
+// Implement a printing routine for the FormatBufferDynamic
 template <>
-inline void EventLogBase<StringLogMessage>::print(outputStream* out, StringLogMessage& lm) {
+inline void EventLogBase<FormatBufferDynamic>::print(outputStream* out, FormatBufferDynamic& lm) {
   out->print_raw(lm);
   out->cr();
 }