1 /* SystemLogger.java -- Classpath's system debugging logger. 2 Copyright (C) 2005 Free Software Foundation, Inc. 3 4 This file is a part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or (at 9 your option) any later version. 10 11 GNU Classpath 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 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under terms 30 of your choice, provided that you also meet, for each linked independent 31 module, the terms and conditions of the license of that module. An 32 independent module is a module which is not derived from or based on 33 this library. If you modify this library, you may extend this exception 34 to your version of the library, but you are not obligated to do so. If 35 you do not wish to do so, delete this exception statement from your 36 version. */ 37 38 39 package gnu.classpath.debug; 40 41 import gnu.java.security.action.GetPropertyAction; 42 43 import java.security.AccessController; 44 import java.util.StringTokenizer; 45 import java.util.logging.Level; 46 import java.util.logging.Logger; 47 48 public final class SystemLogger extends Logger 49 { 50 public static final SystemLogger SYSTEM = new SystemLogger(); 51 52 static 53 { 54 SYSTEM.setFilter (PreciseFilter.GLOBAL); 55 String defaults = (String) AccessController.doPrivileged 56 (new GetPropertyAction("gnu.classpath.debug.components")); 57 58 if (defaults != null) 59 { 60 StringTokenizer tok = new StringTokenizer (defaults, ","); 61 while (tok.hasMoreTokens ()) 62 { 63 Component c = Component.forName (tok.nextToken ()); 64 if (c != null) 65 PreciseFilter.GLOBAL.enable (c); SYSTEM.log(Level.INFO, R, c)66 SYSTEM.log (Level.INFO, "enabled: {0}", c); 67 } 68 } 69 } 70 71 /** 72 * Fetch the system logger instance. The logger returned is meant for debug 73 * and diagnostic logging for Classpath internals. 74 * 75 * @return The system logger. 76 */ getSystemLogger()77 public static SystemLogger getSystemLogger() 78 { 79 // XXX Check some permission here? 80 return SYSTEM; 81 } 82 83 /** 84 * Keep only one instance of the system logger. 85 */ SystemLogger()86 private SystemLogger() 87 { 88 super("gnu.classpath", null); 89 } 90 91 /** 92 * Variable-arguments log method. 93 * 94 * @param level The level to log to. 95 * @param format The format string. 96 * @param args The arguments. 97 */ logv(Level level, String format, Object... args)98 public void logv(Level level, String format, Object... args) 99 { 100 log(level, format, args); 101 } 102 } 103