MarlinUtils.java

/*
 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package sun.java2d.marlin;


public final class MarlinUtils {
    // Marlin logger
    private static final sun.util.logging.PlatformLogger LOG;

    static {
        if (MarlinConst.USE_LOGGER) {
            LOG = sun.util.logging.PlatformLogger.getLogger("sun.java2d.marlin");
        } else {
            LOG = null;
        }
    }

    private MarlinUtils() {
        // no-op
    }

    public static void logInfo(final String msg) {
        if (MarlinConst.USE_LOGGER) {
            LOG.info(msg);
        } else if (MarlinConst.ENABLE_LOGS) {
            System.out.print("INFO: ");
            System.out.println(msg);
        }
    }

    public static void logException(final String msg, final Throwable th) {
        if (MarlinConst.USE_LOGGER) {
            LOG.warning(msg, th);
        } else if (MarlinConst.ENABLE_LOGS) {
            System.out.print("WARNING: ");
            System.out.println(msg);
            th.printStackTrace(System.err);
        }
    }

    // From sun.awt.util.ThreadGroupUtils

    /**
     * Returns a root thread group.
     * Should be called with {@link sun.security.util.SecurityConstants#MODIFY_THREADGROUP_PERMISSION}
     *
     * @return a root {@code ThreadGroup}
     */
    public static ThreadGroup getRootThreadGroup() {
        ThreadGroup currentTG = Thread.currentThread().getThreadGroup();
        ThreadGroup parentTG = currentTG.getParent();
        while (parentTG != null) {
            currentTG = parentTG;
            parentTG = currentTG.getParent();
        }
        return currentTG;
    }
}