--- /dev/null	2016-10-25 08:46:44.038854975 +0200
+++ new/src/share/vm/evtrace/traceBuffer.hpp	2016-10-25 10:40:13.257780227 +0200
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2014, 2015, Dynatrace and/or its affiliates. All rights reserved.
+ *
+ * This file is part of the Lock Contention Tracing Subsystem for the HotSpot
+ * Virtual Machine, which is developed at Christian Doppler Laboratory on
+ * Monitoring and Evolution of Very-Large-Scale Software Systems. Please
+ * contact us at <http://mevss.jku.at/> if you need additional information
+ * or have any questions.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef SHARE_VM_EVTRACE_TRACEBUFFER_HPP
+#define SHARE_VM_EVTRACE_TRACEBUFFER_HPP
+
+#include "memory/allocation.hpp"
+
+class Thread;
+
+class TraceBuffer: public CHeapObj<mtEventTracing> {
+public:
+  TraceBuffer(size_t capacity);
+  virtual ~TraceBuffer() { }
+
+  void reset();
+  bool reserve(size_t nbytes);
+  size_t filled_size() const;
+
+  void* operator new(size_t size, size_t capacity) throw();
+
+  TraceBuffer  *queue_next;
+  u1           *top;
+  const u1     *end;
+  Thread       *owner;
+  s8            owner_id;
+  u1            data[0]; // follows here
+};
+
+#include "evtrace/traceBuffer.inline.hpp"
+
+#endif /* SHARE_VM_EVTRACE_TRACEBUFFER_HPP */