1 /*
 2  * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.  Oracle designates this
 8  * particular file as subject to the "Classpath" exception as provided
 9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package sun.java2d.marlin;
27 
28 
29 public final class MarlinUtils {
30     // Marlin logger
31     private static final sun.util.logging.PlatformLogger LOG;
32 
33     static {
34         if (MarlinConst.USE_LOGGER) {
35             LOG = sun.util.logging.PlatformLogger.getLogger("sun.java2d.marlin");
36         } else {
37             LOG = null;
38         }
39     }
40 
41     private MarlinUtils() {
42         // no-op
43     }
44 
45     public static void logInfo(final String msg) {
46         if (MarlinConst.USE_LOGGER) {
47             LOG.info(msg);
48         } else if (MarlinConst.ENABLE_LOGS) {
49             System.out.print("INFO: ");
50             System.out.println(msg);
51         }
52     }
53 
54     public static void logException(final String msg, final Throwable th) {
55         if (MarlinConst.USE_LOGGER) {
56             LOG.warning(msg, th);
57         } else if (MarlinConst.ENABLE_LOGS) {
58             System.out.print("WARNING: ");
59             System.out.println(msg);
60             th.printStackTrace(System.err);
61         }
62     }
63 
64     // From sun.awt.util.ThreadGroupUtils
65 
66     /**
67      * Returns a root thread group.
68      * Should be called with {@link sun.security.util.SecurityConstants#MODIFY_THREADGROUP_PERMISSION}
69      *
70      * @return a root {@code ThreadGroup}
71      */
72     public static ThreadGroup getRootThreadGroup() {
73         @SuppressWarnings("deprecation")
74         ThreadGroup currentTG = Thread.currentThread().getThreadGroup();
75         ThreadGroup parentTG = currentTG.getParent();
76         while (parentTG != null) {
77             currentTG = parentTG;
78             parentTG = currentTG.getParent();
79         }
80         return currentTG;
81     }
82 }