01: /*
02: *
03: *
04: * Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: */
26:
27: package com.sun.midp.suspend;
28:
29: import com.sun.midp.main.MIDletProxyList;
30: import com.sun.midp.main.Configuration;
31: import java.util.Timer;
32: import java.util.TimerTask;
33:
34: /**
35: * Timer for terminating MIDlets that have not completed
36: * their pase routines within suspend timeout.
37: */
38: class SuspendTimer extends Timer {
39: /**
40: * The timeout within which MIDlets have chance to complete.
41: */
42: private static final long TIMEOUT = Configuration.getIntProperty(
43: "suspendAppTimeout", 2000);
44:
45: /**
46: * The only instance of suspend timer.
47: */
48: private static SuspendTimer timer = new SuspendTimer();
49:
50: /**
51: * Current timer task.
52: */
53: private static TimerTask task;
54:
55: /**
56: * Constructs an instance.
57: */
58: private SuspendTimer() {
59: }
60:
61: /**
62: * Schedules standard MIDlets termination task to sandard timeout.
63: * @param midletList the MIDlet proxy list
64: */
65: static synchronized void start(final MIDletProxyList midletList) {
66: if (null == task) {
67: task = new TimerTask() {
68: public void run() {
69: midletList.terminatePauseAll();
70: }
71: };
72:
73: timer.schedule(task, TIMEOUT);
74: }
75: }
76:
77: /**
78: * Cancels the timer.
79: */
80: static synchronized void stop() {
81: task.cancel();
82: task = null;
83: }
84: }
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