--- /dev/null	2019-02-13 16:01:02.292000000 +0300
+++ new/src/share/vm/jfr/recorder/stringpool/jfrStringPoolWriter.hpp	2019-02-15 19:03:26.009139265 +0300
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2016, 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.
+ *
+ */
+
+#ifndef SHARE_VM_JFR_RECORDER_STRINGPOOL_JFRSTRINGPOOLWRITER_HPP
+#define SHARE_VM_JFR_RECORDER_STRINGPOOL_JFRSTRINGPOOLWRITER_HPP
+
+#include "memory/allocation.hpp"
+#include "jfr/recorder/stringpool/jfrStringPoolBuffer.hpp"
+#include "jfr/writers/jfrEventWriterHost.hpp"
+#include "jfr/writers/jfrMemoryWriterHost.hpp"
+#include "jfr/writers/jfrStorageAdapter.hpp"
+
+class Thread;
+
+class JfrStringPoolFlush : public StackObj {
+ public:
+  typedef JfrStringPoolBuffer Type;
+  JfrStringPoolFlush(Type* old, size_t used, size_t requested, Thread* t);
+  Type* result() { return _result; }
+ private:
+  Type* _result;
+};
+
+typedef Adapter<JfrStringPoolFlush> JfrStringPoolAdapter;
+typedef AcquireReleaseMemoryWriterHost<JfrStringPoolAdapter, StackObj> JfrTransactionalStringPoolWriter;
+typedef EventWriterHost<BigEndianEncoder, CompressedIntegerEncoder, JfrTransactionalStringPoolWriter> JfrStringPoolWriterBase;
+
+class JfrStringPoolWriter : public JfrStringPoolWriterBase {
+ private:
+  size_t _nof_strings;
+ public:
+  JfrStringPoolWriter(Thread* thread);
+  ~JfrStringPoolWriter();
+  void inc_nof_strings();
+};
+
+#endif // SHARE_VM_JFR_RECORDER_STRINGPOOL_JFRSTRINGPOOLWRITER_HPP