--- /dev/null	2018-11-02 08:21:52.000000000 -0700
+++ new/src/java.base/share/classes/jdk/internal/unsupported/SignalDelegate.java	2018-11-02 08:21:52.000000000 -0700
@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 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.internal.unsupported;
+
+public final class SignalDelegate {
+    // Delegate to jdk.internal.misc.Signal.
+    private final jdk.internal.misc.Signal iSignal;
+
+    /**
+     * Constructs a signal from its name.
+     *
+     * @param name the name of the signal.
+     * @exception IllegalArgumentException unknown signal
+     */
+    public SignalDelegate(String name) {
+        iSignal = new jdk.internal.misc.Signal(name);
+    }
+
+    /* Returns the signal number */
+    public int getNumber() {
+        return iSignal.getNumber();
+    }
+
+    /**
+     * Returns the signal name.
+     *
+     * @return the name of the signal.
+     */
+    public String getName() {
+        return iSignal.getName();
+    }
+
+    /**
+     * Compares the equality of two <code>Signal</code> objects.
+     *
+     * @param other the object to compare with.
+     * @return whether two <code>Signal</code> objects are equal.
+     */
+    public boolean equals(Object other) {
+        if (this == other) {
+            return true;
+        }
+        if (other == null || !(other instanceof SignalDelegate)) {
+            return false;
+        }
+        SignalDelegate other1 = (SignalDelegate)other;
+        return iSignal.equals(other1.iSignal);
+    }
+
+    /**
+     * Returns a hashcode for this Signal.
+     *
+     * @return  a hash code value for this object.
+     */
+    public int hashCode() {
+        return getNumber();
+    }
+
+    /**
+     * Returns a string representation of this signal. For example, "SIGINT"
+     * for an object constructed using <code>new Signal ("INT")</code>.
+     *
+     * @return a string representation of the signal
+     */
+    public String toString() {
+        return iSignal.toString();
+    }
+
+
+    /**
+     * Registers a signal handler.
+     *
+     * @param sig a signal
+     * @param handler the handler to be registered with the given signal.
+     * @return the old handler
+     * @exception IllegalArgumentException the signal is in use by the VM
+     */
+    public static synchronized Handler handle(SignalDelegate sig, Handler handler) {
+        jdk.internal.misc.Signal.Handler oldHandler = jdk.internal.misc.Signal.handle(sig.iSignal,
+            InternalMiscHandler.of(sig, handler));
+        return new HandlerProxy(sig.iSignal, oldHandler);
+    }
+
+    /**
+     * Raises a signal in the current process.
+     *
+     * @param sig a signal
+     */
+    public static void raise(SignalDelegate sig) throws IllegalArgumentException {
+        jdk.internal.misc.Signal.raise(sig.iSignal);
+    }
+
+    public interface Handler {
+        /**
+         * The default signal handler
+         */
+        public static final Handler SIG_DFL =
+            new HandlerProxy(null, jdk.internal.misc.Signal.Handler.SIG_DFL);
+
+        /**
+         * Ignore the signal
+         */
+        public static final Handler SIG_IGN =
+            new HandlerProxy(null, jdk.internal.misc.Signal.Handler.SIG_IGN);
+
+
+        public void handle(SignalDelegate ignore);
+    }
+
+    static class HandlerProxy implements Handler {
+        private final jdk.internal.misc.Signal iSignal;
+        private final jdk.internal.misc.Signal.Handler iHandler;
+
+        static Handler of(jdk.internal.misc.Signal signal, jdk.internal.misc.Signal.Handler handler) {
+            if (handler == SignalDelegate.Handler.SIG_DFL) {
+                return Handler.SIG_DFL;
+            } else if (handler == SignalDelegate.Handler.SIG_IGN) {
+                return Handler.SIG_IGN;
+            } else if (handler instanceof InternalMiscHandler) {
+                return ((InternalMiscHandler) handler).handler;
+            } else {
+                return new HandlerProxy(signal, handler);
+            }
+        }
+
+        HandlerProxy(jdk.internal.misc.Signal iSignal, jdk.internal.misc.Signal.Handler iHandler) {
+            this.iSignal = iSignal;
+            this.iHandler = iHandler;
+        }
+
+        @Override
+        public void handle(SignalDelegate ignore) {
+            iHandler.handle(iSignal);
+        }
+    }
+
+    static final class InternalMiscHandler implements jdk.internal.misc.Signal.Handler {
+        private final Handler handler;
+        private final SignalDelegate signal;
+
+        static jdk.internal.misc.Signal.Handler of(SignalDelegate signal, Handler handler) {
+            if (handler == Handler.SIG_DFL) {
+                return jdk.internal.misc.Signal.Handler.SIG_DFL;
+            } else if (handler == Handler.SIG_IGN) {
+                return jdk.internal.misc.Signal.Handler.SIG_IGN;
+            } else if (handler instanceof HandlerProxy) {
+                return ((HandlerProxy)handler).iHandler;
+            } else {
+                return new InternalMiscHandler(signal, handler);
+            }
+        }
+
+        private InternalMiscHandler(SignalDelegate signal, Handler handler) {
+            this.handler = handler;
+            this.signal = signal;
+        }
+
+        @Override
+        public void handle(jdk.internal.misc.Signal ignore) {
+            handler.handle(signal);
+        }
+    }
+}