01: /*
02: * @(#)ImageProductionMonitor.java 1.13 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.image;
29:
30: //import sun.misc.VM;
31: /**
32: * This class monitors image production.
33: *
34: * Currently it excersizes its control in two ways:
35: *
36: * 1) It determines whether image production is allowed or not
37: * by checkingn the VM's memory state. Image production is
38: * disabled when the state reaches a certain level.
39: * By default, image production is disabled when the state
40: * reaches VM.STATE_YELLOW.
41: *
42: * 2) It also determines how many image fetcher threads are allowed
43: * to function concurrently. This number is by default 4.
44: *
45: **/
46: class ImageProductionMonitor {
47: // private static final int abortMemState = VM.STATE_YELLOW;
48: private static final int abortMemState = 0;
49: static final int MAX_FETCHER_THREADS = 4;
50:
51: static boolean allowsProduction() {
52: // if (VM.getStateQuick() >= abortMemState) {
53: // return false;
54: // }
55: return true;
56: }
57: }
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