--- /dev/null Thu Jun 10 16:28:11 2010 +++ new/test/java/util/logging/AnonLoggerWeakRefLeak.java Thu Jun 10 16:28:08 2010 @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2010, 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. + * + * 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. + */ + +import java.util.logging.*; + +public class AnonLoggerWeakRefLeak { + public static int DEFAULT_LOOP_TIME = 60; // time is in seconds + + public static void main(String[] args) { + int loop_time = 0; + int max_loop_time = DEFAULT_LOOP_TIME; + + if (args.length == 0) { + System.out.println("INFO: using default time of " + + max_loop_time + " seconds."); + } else { + try { + max_loop_time = Integer.parseInt(args[0]); + } catch (NumberFormatException nfe) { + System.err.println("Error: '" + args[0] + + "': is not a valid seconds value."); + System.err.println("Usage: AnonLoggerWeakRefLeak [seconds]"); + System.exit(1); + } + } + + long count = 0; + long now = 0; + long startTime = System.currentTimeMillis(); + + while (now < (startTime + (max_loop_time * 1000))) { + if ((count % 1000) == 0) { + // Print initial call count to let caller know that + // we're up and running and then periodically + System.out.println("INFO: call count = " + count); + } + + for (int i = 0; i < 100; i++) { + // this Logger call is leaking a WeakReference in Logger.kids + java.util.logging.Logger.getAnonymousLogger(); + count++; + } + + try { + // delay for 1/10 of a second to avoid CPU saturation + Thread.sleep(100); + } catch (InterruptedException ie) { + // ignore any exceptions + } + + now = System.currentTimeMillis(); + } + + System.out.println("INFO: final loop count = " + count); + } +}