--- /dev/null	2017-11-09 09:38:01.297999907 +0100
+++ new/src/hotspot/share/jfr/recorder/access/jfrbackend.cpp	2018-04-09 14:57:33.610317068 +0200
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2012, 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/jfr.hpp"
+#include "jfr/periodic/sampling/jfrThreadSampler.hpp"
+#include "jfr/recorder/access/jfrbackend.hpp"
+#include "jfr/recorder/jfrEventSetting.inline.hpp"
+
+void JfrBackend::on_javathread_exit(JavaThread *thread) {
+  Jfr::on_thread_exit(thread);
+}
+
+void JfrBackend::on_thread_destruct(Thread* thread) {
+  Jfr::on_thread_destruct(thread);
+}
+
+void JfrBackend::on_javathread_suspend(JavaThread* thread) {
+  JfrThreadSampler::on_javathread_suspend(thread);
+}
+
+bool JfrBackend::enabled() {
+  return Jfr::is_enabled();
+}
+
+bool JfrBackend::is_event_enabled(TraceEventId event_id) {
+  return JfrEventSetting::is_enabled(event_id);
+}
+
+bool JfrBackend::is_stacktrace_enabled(TraceEventId event_id) {
+  return JfrEventSetting::has_stacktrace(event_id);
+}
+
+jlong JfrBackend::threshold(TraceEventId event_id) {
+  return JfrEventSetting::threshold(event_id);
+}
+
+void JfrBackend::on_unloading_classes() {
+  Jfr::on_unloading_classes();
+}
+
+JfrTraceTime JfrBackend::time() {
+  return JfrTraceTime::now();
+}