--- /dev/null	2016-10-25 08:46:44.038854975 +0200
+++ new/src/share/vm/evtrace/traceReaderThread.hpp	2016-10-25 10:40:15.561781750 +0200
@@ -0,0 +1,57 @@
+/*
+ * 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_TRACEREADERTHREAD_HPP
+#define SHARE_VM_EVTRACE_TRACEREADERTHREAD_HPP
+
+#include "runtime/thread.hpp"
+
+class TraceReaderThread: public JavaThread {
+private:
+  oop _object;
+  volatile bool _is_polling_queue;
+
+  TraceReaderThread(oop obj);
+
+  static void trace_reader_thread_entry(JavaThread* thread, TRAPS);
+
+public:
+  virtual ~TraceReaderThread();
+
+  virtual bool is_TraceReader_thread() const { return true; }
+
+  void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
+
+  static TraceReaderThread * start(Handle flushq, Handle freeq, TRAPS);
+
+  bool is_polling_queue() { return _is_polling_queue; }
+  void set_is_polling_queue(bool polling) {
+    assert(_is_polling_queue != polling, "flip only");
+    _is_polling_queue = polling;
+  }
+
+  void shutdown(TRAPS);
+};
+
+#endif /* SHARE_VM_EVTRACE_TRACEREADERTHREAD_HPP */