--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.salver/src/org/graalvm/compiler/salver/dumper/AbstractGraalDumper.java	2017-02-15 17:09:25.906955486 -0800
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2015, 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.
+ */
+package org.graalvm.compiler.salver.dumper;
+
+import java.io.IOException;
+
+import org.graalvm.compiler.salver.Salver;
+import org.graalvm.compiler.salver.data.DataDict;
+
+public class AbstractGraalDumper extends AbstractSerializerDumper {
+
+    public static final String EVENT_NAMESPACE = "graal";
+
+    private int eventCounter;
+
+    public void beginDump() throws IOException {
+        beginDump(EVENT_NAMESPACE);
+    }
+
+    protected void beginDump(String namespace) throws IOException {
+        beginDump(namespace, getBeginDumpDataDict());
+    }
+
+    protected void beginDump(String namespace, DataDict dataDict) throws IOException {
+        DataDict eventDict = createEventDict(":begin");
+        eventDict.put("@time", System.currentTimeMillis());
+        eventDict.put("@ecid", Salver.ECID);
+        if (namespace != null) {
+            eventDict.put("@namespace", namespace);
+        }
+        if (dataDict != null) {
+            eventDict.put("@data", dataDict);
+        }
+        serializeAndFlush(eventDict);
+    }
+
+    protected DataDict getBeginDumpDataDict() {
+        DataDict dataDict = new DataDict();
+        dataDict.put("dumper", getClass().getSimpleName());
+        dataDict.put("thread", Thread.currentThread().getName());
+        return dataDict;
+    }
+
+    public void endDump() throws IOException {
+        DataDict eventDict = createEventDict(":end");
+        eventDict.put("@time", System.currentTimeMillis());
+        serializeAndFlush(eventDict);
+    }
+
+    @Override
+    public void close() throws IOException {
+        endDump();
+    }
+
+    protected DataDict createEventDict(String name) {
+        DataDict eventDict = new DataDict();
+        eventDict.put("@event", name);
+        eventDict.put("@n", eventCounter++);
+        return eventDict;
+    }
+
+    protected DataDict createEventDict(String name, DataDict data) {
+        DataDict eventDict = createEventDict(name);
+        eventDict.put("@data", data);
+        return eventDict;
+    }
+}