| /* |
| * Copyright (c) 1998, 2021, 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 com.sun.media.sound; |
| |
| import java.security.AccessController; |
| |
| import sun.security.action.GetPropertyAction; |
| |
| /** |
| * Printer allows you to set up global debugging status and print |
| * messages accordingly. |
| * |
| * @author David Rivas |
| * @author Kara Kytle |
| */ |
| final class Printer { |
| |
| static final boolean err = isBuildInternal(); |
| |
| private static final boolean SHOW_THREADID = true; |
| private static final boolean SHOW_TIMESTAMP = true; |
| |
| /** |
| * Suppresses default constructor, ensuring non-instantiability. |
| */ |
| private Printer() { |
| } |
| |
| /** |
| * This method is used in the special cases which "should never happen...". |
| * And in fact if should be implemented as an assertion, but for |
| * compatibility reason it just print an error only in case of "internal" |
| * build. In time its usage should be replaced by some kind of assertion or |
| * dropped completly. |
| */ |
| public static void err(String str) { |
| if (err) { |
| println(str); |
| } |
| } |
| |
| /** |
| * Returns {@code true} if the build of the current jdk is "internal". |
| */ |
| private static boolean isBuildInternal() { |
| @SuppressWarnings("removal") |
| String javaVersion = AccessController.doPrivileged( |
| new GetPropertyAction("java.version")); |
| return javaVersion != null && javaVersion.contains("internal"); |
| } |
| |
| private static long startTime = 0; |
| |
| private static void println(String s) { |
| String prepend = ""; |
| if (SHOW_THREADID) { |
| prepend = "thread " + Thread.currentThread().getId() + " " + prepend; |
| } |
| if (SHOW_TIMESTAMP) { |
| if (startTime == 0) { |
| startTime = System.nanoTime() / 1000000l; |
| } |
| prepend = prepend + ((System.nanoTime()/1000000l) - startTime) + "millis: "; |
| } |
| System.out.println(prepend + s); |
| } |
| } |