--- /dev/null	2017-11-09 09:38:01.297999907 +0100
+++ new/src/hotspot/share/jfr/utilities/jfrTraceTime.cpp	2018-04-09 15:25:00.778485941 +0200
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2013, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "jfr/utilities/jfrTraceTime.hpp"
+#include "runtime/os.hpp"
+#ifdef X86
+#include "rdtsc_x86.hpp"
+#endif
+
+#include OS_HEADER_INLINE(os)
+
+bool JfrTraceTime::_ft_enabled = false;
+
+bool JfrTraceTime::initialize() {
+  static bool initialized = false;
+  if (!initialized) {
+#ifdef X86
+    _ft_enabled = Rdtsc::initialize();
+#else
+    _ft_enabled = false;
+#endif
+    initialized = true;
+  }
+  return initialized;
+}
+
+bool JfrTraceTime::is_ft_supported() {
+#ifdef X86
+  return Rdtsc::is_supported();
+#else
+  return false;
+#endif
+}
+
+JfrTraceTime::JfrTraceTime() {
+#ifdef X86
+  _ticks = _ft_enabled ? Rdtsc::elapsed_counter() : os::elapsed_counter();
+#else
+  _ticks = os::elapsed_counter();
+#endif
+}
+
+JfrTraceTime JfrTraceTime::now() {
+  return JfrTraceTime();
+}
+
+void JfrTraceTime::stamp() {
+  _ticks = now().value();
+}
+
+const void* JfrTraceTime::time_function() {
+#ifdef X86
+  return _ft_enabled ? (const void*)Rdtsc::elapsed_counter : (const void*)os::elapsed_counter;
+#else
+  return (const void*)os::elapsed_counter;
+#endif
+}
+
+jlong JfrTraceTime::frequency() {
+#ifdef X86
+  return _ft_enabled ? Rdtsc::frequency() : os::elapsed_frequency();
+#else
+  return os::elapsed_frequency();
+#endif
+}
+