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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test TestPrintReferences
 * @bug 8133818
 * @summary Validate the reference processing logging
 * @key gc
 * @library /testlibrary
 * @modules java.base/sun.misc
 *          java.management
 */

import jdk.test.lib.ProcessTools;
import jdk.test.lib.OutputAnalyzer;

public class TestPrintReferences {
  public static void main(String[] args) throws Exception {
    ProcessBuilder pb_enabled =
      ProcessTools.createJavaProcessBuilder("-XX:+PrintGCDetails", "-XX:+PrintReferenceGC", "-Xmx10M", GCTest.class.getName());
    OutputAnalyzer output = new OutputAnalyzer(pb_enabled.start());

    output.shouldMatch(
      "#[0-9]+: \\[SoftReference, [0-9]+ refs, [0-9]+\\.[0-9]+ secs\\]" +
      "#[0-9]+: \\[WeakReference, [0-9]+ refs, [0-9]+\\.[0-9]+ secs\\]" +
      "#[0-9]+: \\[FinalReference, [0-9]+ refs, [0-9]+\\.[0-9]+ secs\\]" +
      "#[0-9]+: \\[PhantomReference, [0-9]+ refs, [0-9]+\\.[0-9]+ secs\\]" +
      "#[0-9]+: \\[Cleaners, [0-9]+ refs, [0-9]+\\.[0-9]+ secs\\]" +
      "#[0-9]+: \\[JNI Weak Reference, [0-9]+ refs, [0-9]+\\.[0-9]+ secs\\]");

    output.shouldHaveExitValue(0);
  }

  static class GCTest {
    public static void main(String [] args) {
      System.gc();
    }
  }
}