1 /*
   2  * Copyright (c) 2015, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
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  23 
  24 /*
  25  * @test TestPrintReferences
  26  * @bug 8136991
  27  * @summary Validate the reference processing logging
  28  * @key gc
  29  * @library /testlibrary
  30  * @modules java.base/sun.misc
  31  *          java.management
  32  */
  33 
  34 import jdk.test.lib.ProcessTools;
  35 import jdk.test.lib.OutputAnalyzer;
  36 
  37 public class TestPrintReferences {
  38   public static void main(String[] args) throws Exception {
  39     ProcessBuilder pb_enabled =
  40       ProcessTools.createJavaProcessBuilder("-Xlog:gc+ref=debug", "-Xmx10M", GCTest.class.getName());
  41     OutputAnalyzer output = new OutputAnalyzer(pb_enabled.start());
  42 
  43     String countRegex = "[0-9]+ refs";
  44     String timeRegex = "\\([0-9]+[.,][0-9]+s, [0-9]+[.,][0-9]+s\\) [0-9]+[.,][0-9]+ms";
  45 
  46     output.shouldMatch(".* GC\\([0-9]+\\) SoftReference " + timeRegex + "\n" +
  47                        ".* GC\\([0-9]+\\) WeakReference " + timeRegex + "\n" +
  48                        ".* GC\\([0-9]+\\) FinalReference " + timeRegex + "\n" +
  49                        ".* GC\\([0-9]+\\) PhantomReference " + timeRegex + "\n" +
  50                        ".* GC\\([0-9]+\\) JNI Weak Reference " + timeRegex + "\n" +
  51                        ".* GC\\([0-9]+\\) Ref Counts: Soft: [0-9]+ Weak: [0-9]+ Final: [0-9]+ Phantom: [0-9]+\n");
  52 
  53     output.shouldHaveExitValue(0);
  54   }
  55 
  56   static class GCTest {
  57     public static void main(String [] args) {
  58       System.gc();
  59     }
  60   }
  61 }