01: /*
02: * @(#)AWTFinalizer.java 1.11 06/10/10
03: *
04: * Copyright 1990-2006 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:
28: package sun.awt;
29:
30: import sun.awt.AWTFinalizeable;
31: import java.security.AccessController;
32: import java.security.PrivilegedAction;
33:
34: public class AWTFinalizer extends Thread {
35: static AWTFinalizer theFinalizer;
36: static AWTFinalizeable theFinalQueue;
37: static {
38: AccessController.doPrivileged(new PrivilegedAction() {
39: public Object run() {
40: theFinalizer = new AWTFinalizer();
41: return null;
42: }
43: });
44: theFinalizer.start();
45: }
46:
47: private AWTFinalizer() {
48: super ("AWT-Finalizer");
49: setPriority(MAX_PRIORITY - 1);
50: setDaemon(true);
51: }
52:
53: public void run() {
54: while (true) {
55: AWTFinalizeable q;
56: synchronized (this ) {
57: while ((q = theFinalQueue) == null) {
58: try {
59: wait();
60: } catch (InterruptedException e) {
61: }
62: }
63: theFinalQueue = null;
64: }
65: while (q != null) {
66: q.doFinalization();
67: q = q.getNextFinalizeable();
68: }
69: }
70: }
71:
72: public static void addFinalizeable(AWTFinalizeable o) {
73: synchronized (theFinalizer) {
74: o.setNextFinalizeable(theFinalQueue);
75: theFinalQueue = o;
76: theFinalizer.notify();
77: }
78: }
79: }
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