mirror of
https://github.com/openjdk/jdk.git
synced 2026-03-10 08:01:54 +00:00
76 lines
2.4 KiB
Java
76 lines
2.4 KiB
Java
/*
|
|
* Copyright (c) 1999, 2012, 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 java.lang;
|
|
|
|
import jdk.internal.misc.Signal;
|
|
|
|
|
|
/**
|
|
* Package-private utility class for setting up and tearing down
|
|
* platform-specific support for termination-triggered shutdowns.
|
|
*
|
|
* @author Mark Reinhold
|
|
* @since 1.3
|
|
*/
|
|
|
|
class Terminator {
|
|
|
|
private static Signal.Handler handler = null;
|
|
|
|
/* Invocations of setup and teardown are already synchronized
|
|
* on the shutdown lock, so no further synchronization is needed here
|
|
*/
|
|
|
|
static void setup() {
|
|
if (handler != null) return;
|
|
Signal.Handler sh = new Signal.Handler() {
|
|
public void handle(Signal sig) {
|
|
Shutdown.exit(sig.getNumber() + 0200);
|
|
}
|
|
};
|
|
handler = sh;
|
|
|
|
// When -Xrs is specified the user is responsible for
|
|
// ensuring that shutdown hooks are run by calling
|
|
// System.exit()
|
|
try {
|
|
Signal.handle(new Signal("INT"), sh);
|
|
} catch (IllegalArgumentException e) {
|
|
}
|
|
try {
|
|
Signal.handle(new Signal("TERM"), sh);
|
|
} catch (IllegalArgumentException e) {
|
|
}
|
|
}
|
|
|
|
static void teardown() {
|
|
/* The current sun.misc.Signal class does not support
|
|
* the cancellation of handlers
|
|
*/
|
|
}
|
|
|
|
}
|