--- /dev/null	2017-11-09 09:38:01.297999907 +0100
+++ new/src/hotspot/share/jfr/recorder/checkpoint/jfrCheckpointBlob.cpp	2018-04-09 15:03:50.278986085 +0200
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2017, 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/recorder/checkpoint/jfrCheckpointBlob.hpp"
+#include "jfr/recorder/checkpoint/jfrCheckpointWriter.hpp"
+
+JfrCheckpointBlob::JfrCheckpointBlob(const u1* checkpoint, size_t size) :
+  _checkpoint(JfrCHeapObj::new_array<u1>(size)),
+  _size(size),
+  _next(),
+  _written(false) {
+  assert(checkpoint != NULL, "invariant");
+  assert(_checkpoint != NULL, "invariant");
+  memcpy(const_cast<u1*>(_checkpoint), checkpoint, size);
+}
+
+JfrCheckpointBlob::~JfrCheckpointBlob() {
+  JfrCHeapObj::free(const_cast<u1*>(_checkpoint), _size);
+}
+
+const JfrCheckpointBlobHandle& JfrCheckpointBlob::next() const {
+  return _next;
+}
+
+void JfrCheckpointBlob::write_this(JfrCheckpointWriter& writer) const {
+  writer.bytes(_checkpoint, _size);
+}
+
+void JfrCheckpointBlob::exclusive_write(JfrCheckpointWriter& writer) const {
+  if (!_written) {
+    write_this(writer);
+    _written = true;
+  }
+  if (_next.valid()) {
+    _next->exclusive_write(writer);
+  }
+}
+
+void JfrCheckpointBlob::write(JfrCheckpointWriter& writer) const {
+  write_this(writer);
+  if (_next.valid()) {
+    _next->write(writer);
+  }
+}
+
+void JfrCheckpointBlob::reset_write_state() const {
+  if (_written) {
+    _written = false;
+  }
+  if (_next.valid()) {
+    _next->reset_write_state();
+  }
+}
+
+void JfrCheckpointBlob::set_next(const JfrCheckpointBlobHandle& ref) {
+  if (_next == ref) {
+    return;
+  }
+  assert(_next != ref, "invariant");
+  if (_next.valid()) {
+    _next->set_next(ref);
+    return;
+  }
+  _next = ref;
+}
+
+JfrCheckpointBlobHandle JfrCheckpointBlob::make(const u1* checkpoint, size_t size) {
+  const JfrCheckpointBlob* cp_blob = new JfrCheckpointBlob(checkpoint, size);
+  assert(cp_blob != NULL, "invariant");
+  return JfrCheckpointBlobReference::make(cp_blob);
+}