36 * @author Mark Reinhold
37 * @since 1.3
38 */
39
40 class Terminator {
41
42 private static SignalHandler handler = null;
43
44 /* Invocations of setup and teardown are already synchronized
45 * on the shutdown lock, so no further synchronization is needed here
46 */
47
48 static void setup() {
49 if (handler != null) return;
50 SignalHandler sh = new SignalHandler() {
51 public void handle(Signal sig) {
52 Shutdown.exit(sig.getNumber() + 0200);
53 }
54 };
55 handler = sh;
56 try {
57 Signal.handle(new Signal("HUP"), sh);
58 Signal.handle(new Signal("INT"), sh);
59 Signal.handle(new Signal("TERM"), sh);
60 } catch (IllegalArgumentException e) {
61 // When -Xrs is specified the user is responsible for
62 // ensuring that shutdown hooks are run by calling
63 // System.exit()
64 }
65 }
66
67 static void teardown() {
68 /* The current sun.misc.Signal class does not support
69 * the cancellation of handlers
70 */
71 }
72
73 }
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36 * @author Mark Reinhold
37 * @since 1.3
38 */
39
40 class Terminator {
41
42 private static SignalHandler handler = null;
43
44 /* Invocations of setup and teardown are already synchronized
45 * on the shutdown lock, so no further synchronization is needed here
46 */
47
48 static void setup() {
49 if (handler != null) return;
50 SignalHandler sh = new SignalHandler() {
51 public void handle(Signal sig) {
52 Shutdown.exit(sig.getNumber() + 0200);
53 }
54 };
55 handler = sh;
56 // When -Xrs is specified the user is responsible for
57 // ensuring that shutdown hooks are run by calling
58 // System.exit()
59 try {
60 Signal.handle(new Signal("HUP"), sh);
61 } catch (IllegalArgumentException e) {
62 }
63 try {
64 Signal.handle(new Signal("INT"), sh);
65 } catch (IllegalArgumentException e) {
66 }
67 try {
68 Signal.handle(new Signal("TERM"), sh);
69 } catch (IllegalArgumentException e) {
70 }
71 }
72
73 static void teardown() {
74 /* The current sun.misc.Signal class does not support
75 * the cancellation of handlers
76 */
77 }
78
79 }
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