--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.unsupported/share/classes/sun/misc/SignalHandler.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 1998, 2016, 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 sun.misc;
+
+/**
+ * This is the signal handler interface expected in <code>Signal.handle</code>.
+ *
+ * @author   Sheng Liang
+ * @author   Bill Shannon
+ * @see      sun.misc.Signal
+ * @since    1.2
+ */
+
+public interface SignalHandler {
+
+    /**
+     * The default signal handler
+     */
+    public static final SignalHandler SIG_DFL =
+            new Signal.SunMiscHandler(null, jdk.internal.misc.Signal.Handler.SIG_DFL);
+    /**
+     * Ignore the signal
+     */
+    public static final SignalHandler SIG_IGN =
+            new Signal.SunMiscHandler(null, jdk.internal.misc.Signal.Handler.SIG_IGN);
+
+    /**
+     * Handle the given signal
+     *
+     * @param sig a signal object
+     */
+    public void handle(Signal sig);
+}