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
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test TestEagerReclaimHumongousRegionsClearMarkBits
  26  * @bug 8051973
  27  * @summary Test to make sure that eager reclaim of humongous objects correctly clears
  28  * mark bitmaps at reclaim.
  29  * @key gc
  30  * @library /testlibrary
  31  * @modules java.base/sun.misc
  32  *          java.management
  33  */
  34 
  35 import java.util.ArrayList;
  36 import java.util.LinkedList;
  37 import java.util.Random;
  38 
  39 import com.oracle.java.testlibrary.OutputAnalyzer;
  40 import com.oracle.java.testlibrary.ProcessTools;
  41 
  42 // An object that has a few references to other instances to slow down marking.
  43 class ObjectWithSomeRefs {
  44     public ObjectWithSomeRefs other1;
  45     public ObjectWithSomeRefs other2;
  46     public ObjectWithSomeRefs other3;
  47     public ObjectWithSomeRefs other4;
  48 }
  49 
  50 class ReclaimRegionFast {
  51     public static final long MAX_MILLIS_FOR_RUN = 50 * 1000; // The maximum runtime for the actual test.
  52 
  53     public static final int M = 1024*1024;
  54 
  55     public static LinkedList<Object> garbageList = new LinkedList<Object>();
  56 
  57     public static void genGarbage(Object large) {
  58         for (int i = 0; i < 64*1024; i++) {
  59             Object[] garbage = new Object[50];
  60             garbage[0] = large;

  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
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test TestEagerReclaimHumongousRegionsClearMarkBits
  26  * @bug 8051973
  27  * @summary Test to make sure that eager reclaim of humongous objects correctly clears
  28  * mark bitmaps at reclaim.
  29  * @key gc
  30  * @library /testlibrary
  31  * @modules java.base/sun.misc
  32  *          java.management
  33  */
  34 
  35 import java.util.ArrayList;
  36 import java.util.LinkedList;
  37 import java.util.Random;
  38 
  39 import jdk.test.lib.OutputAnalyzer;
  40 import jdk.test.lib.ProcessTools;
  41 
  42 // An object that has a few references to other instances to slow down marking.
  43 class ObjectWithSomeRefs {
  44     public ObjectWithSomeRefs other1;
  45     public ObjectWithSomeRefs other2;
  46     public ObjectWithSomeRefs other3;
  47     public ObjectWithSomeRefs other4;
  48 }
  49 
  50 class ReclaimRegionFast {
  51     public static final long MAX_MILLIS_FOR_RUN = 50 * 1000; // The maximum runtime for the actual test.
  52 
  53     public static final int M = 1024*1024;
  54 
  55     public static LinkedList<Object> garbageList = new LinkedList<Object>();
  56 
  57     public static void genGarbage(Object large) {
  58         for (int i = 0; i < 64*1024; i++) {
  59             Object[] garbage = new Object[50];
  60             garbage[0] = large;