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77 lines
1.5 KiB
77 lines
1.5 KiB
/*
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* Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.lang;
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import sun.misc.Signal;
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import sun.misc.SignalHandler;
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/**
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* Package-private utility class for setting up and tearing down
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* platform-specific support for termination-triggered shutdowns.
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*
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* @author Mark Reinhold
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* @since 1.3
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*/
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class Terminator {
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private static SignalHandler handler = null;
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/* Invocations of setup and teardown are already synchronized
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* on the shutdown lock, so no further synchronization is needed here
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*/
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static void setup() {
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if (handler != null) return;
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SignalHandler sh = new SignalHandler() {
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public void handle(Signal sig) {
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Shutdown.exit(sig.getNumber() + 0200);
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}
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};
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handler = sh;
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// When -Xrs is specified the user is responsible for
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// ensuring that shutdown hooks are run by calling
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// System.exit()
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try {
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Signal.handle(new Signal("INT"), sh);
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} catch (IllegalArgumentException e) {
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}
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try {
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Signal.handle(new Signal("TERM"), sh);
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} catch (IllegalArgumentException e) {
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}
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}
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static void teardown() {
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/* The current sun.misc.Signal class does not support
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* the cancellation of handlers
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*/
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}
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}
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