--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/instrument/ThrowableTracer.java	Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2012, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 jdk.jfr.internal.instrument;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+import jdk.jfr.events.ErrorThrownEvent;
+import jdk.jfr.events.ExceptionThrownEvent;
+
+public final class ThrowableTracer {
+
+    private static AtomicLong numThrowables = new AtomicLong(0);
+
+    public static void traceError(Error e, String message) {
+        if (e instanceof OutOfMemoryError) {
+            return;
+        }
+        ErrorThrownEvent errorEvent = new ErrorThrownEvent();
+        errorEvent.message = message;
+        errorEvent.thrownClass = e.getClass();
+        errorEvent.commit();
+
+        ExceptionThrownEvent exceptionEvent = new ExceptionThrownEvent();
+        exceptionEvent.message = message;
+        exceptionEvent.thrownClass = e.getClass();
+        exceptionEvent.commit();
+        numThrowables.incrementAndGet();
+    }
+
+    public static void traceThrowable(Throwable t, String message) {
+        ExceptionThrownEvent event = new ExceptionThrownEvent();
+        event.message = message;
+        event.thrownClass = t.getClass();
+        event.commit();
+        numThrowables.incrementAndGet();
+    }
+
+    public static long numThrowables() {
+        return numThrowables.get();
+    }
+}