1 /*
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  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).
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  23 
  24 /*
  25  * @test TestPrintReferences
  26  * @bug 8136991
  27  * @summary Validate the reference processing logging
  28  * @key gc
  29  * @library /test/lib
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  */
  33 
  34 import jdk.test.lib.process.OutputAnalyzer;
  35 import jdk.test.lib.process.ProcessTools;
  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", "-Xmx32M", GCTest.class.getName());
  41     OutputAnalyzer output = new OutputAnalyzer(pb_enabled.start());
  42 
  43     String gcLogTimeRegex = ".* GC\\([0-9]+\\)";
  44     String countRegex = "[0-9]+";
  45     String timeRegex = "[0-9]+[.,][0-9]+ms\n";
  46     String refDetailRegex = gcLogTimeRegex + "   Phase2: " + timeRegex +
  47                             gcLogTimeRegex + "   Phase3: " + timeRegex +
  48                             gcLogTimeRegex + "   Cleared: " + countRegex + "\n" +
  49                             gcLogTimeRegex + "   Discovered: " + countRegex + "\n";
  50     String softRefDetailRegex = gcLogTimeRegex + "   Phase1: " + timeRegex +
  51                                 refDetailRegex;
  52 
  53     output.shouldMatch(/* SoftReference processing */
  54                        gcLogTimeRegex + " SoftReference " + timeRegex + softRefDetailRegex +
  55                        /* WeakReference processing */
  56                        gcLogTimeRegex + " WeakReference " + timeRegex + refDetailRegex +
  57                        /* FinalReference processing */
  58                        gcLogTimeRegex + " FinalReference " + timeRegex + refDetailRegex +
  59                        /* PhantomReference processing */
  60                        gcLogTimeRegex + " PhantomReference " + timeRegex + refDetailRegex +
  61                        /* JNI Weak Reference processing */
  62                        gcLogTimeRegex + " JNI Weak Reference " + timeRegex +
  63                        /* Enqueue Reference Lists */
  64                        gcLogTimeRegex + " Enqueue reference lists " + timeRegex +
  65                        /* Enqueued Stats */
  66                        gcLogTimeRegex + "   Counts:  Soft: " + countRegex + "  Weak: " + countRegex +
  67                                         "  Final: " + countRegex + "  Phantom: " + countRegex
  68                        );
  69 
  70     output.shouldHaveExitValue(0);
  71   }
  72 
  73   static class GCTest {
  74     public static void main(String [] args) {
  75       System.gc();
  76     }
  77   }
  78 }