public abstract class java.lang.ref.Reference<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: java.lang.ref.Reference
  super_class: java.lang.Object
{
  private T referent;
    descriptor: Ljava/lang/Object;
    flags: (0x0002) ACC_PRIVATE
    Signature: TT;

  volatile java.lang.ref.ReferenceQueue<? super T> queue;
    descriptor: Ljava/lang/ref/ReferenceQueue;
    flags: (0x0040) ACC_VOLATILE
    Signature: Ljava/lang/ref/ReferenceQueue<-TT;>;

  volatile java.lang.ref.Reference next;
    descriptor: Ljava/lang/ref/Reference;
    flags: (0x0040) ACC_VOLATILE

  private transient java.lang.ref.Reference<T> discovered;
    descriptor: Ljava/lang/ref/Reference;
    flags: (0x0082) ACC_PRIVATE, ACC_TRANSIENT
    Signature: Ljava/lang/ref/Reference<TT;>;

  private static final java.lang.Object processPendingLock;
    descriptor: Ljava/lang/Object;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static boolean processPendingActive;
    descriptor: Z
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=2, args_size=0
         0: .line 233
            new java.lang.Object
            dup
            invokespecial java.lang.Object.<init>:()V
            putstatic java.lang.ref.Reference.processPendingLock:Ljava/lang/Object;
         1: .line 234
            iconst_0
            putstatic java.lang.ref.Reference.processPendingActive:Z
         2: .line 293
            invokestatic java.lang.Thread.currentThread:()Ljava/lang/Thread;
            invokevirtual java.lang.Thread.getThreadGroup:()Ljava/lang/ThreadGroup;
            astore 0 /* tg */
        start local 0 // java.lang.ThreadGroup tg
         3: .line 294
            aload 0 /* tg */
            astore 1 /* tgn */
        start local 1 // java.lang.ThreadGroup tgn
         4: .line 295
            goto 6
         5: .line 296
      StackMap locals: java.lang.ThreadGroup java.lang.ThreadGroup
      StackMap stack:
            aload 1 /* tgn */
            astore 0 /* tg */
            aload 0 /* tg */
            invokevirtual java.lang.ThreadGroup.getParent:()Ljava/lang/ThreadGroup;
            astore 1 /* tgn */
         6: .line 295
      StackMap locals:
      StackMap stack:
            aload 1 /* tgn */
            ifnonnull 5
        end local 1 // java.lang.ThreadGroup tgn
         7: .line 297
            new java.lang.ref.Reference$ReferenceHandler
            dup
            aload 0 /* tg */
            ldc "Reference Handler"
            invokespecial java.lang.ref.Reference$ReferenceHandler.<init>:(Ljava/lang/ThreadGroup;Ljava/lang/String;)V
            astore 1 /* handler */
        start local 1 // java.lang.Thread handler
         8: .line 301
            aload 1 /* handler */
            bipush 10
            invokevirtual java.lang.Thread.setPriority:(I)V
         9: .line 302
            aload 1 /* handler */
            iconst_1
            invokevirtual java.lang.Thread.setDaemon:(Z)V
        10: .line 303
            aload 1 /* handler */
            invokevirtual java.lang.Thread.start:()V
        11: .line 306
            new java.lang.ref.Reference$1
            dup
            invokespecial java.lang.ref.Reference$1.<init>:()V
            invokestatic jdk.internal.misc.SharedSecrets.setJavaLangRefAccess:(Ljdk/internal/misc/JavaLangRefAccess;)V
        end local 1 // java.lang.Thread handler
        end local 0 // java.lang.ThreadGroup tg
        12: .line 319
            return
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            3   12     0       tg  Ljava/lang/ThreadGroup;
            4    7     1      tgn  Ljava/lang/ThreadGroup;
            8   12     1  handler  Ljava/lang/Thread;

  private static native java.lang.ref.Reference<java.lang.Object> getAndClearReferencePendingList();
    descriptor: ()Ljava/lang/ref/Reference;
    flags: (0x010a) ACC_PRIVATE, ACC_STATIC, ACC_NATIVE
    Signature: ()Ljava/lang/ref/Reference<Ljava/lang/Object;>;

  private static native boolean hasReferencePendingList();
    descriptor: ()Z
    flags: (0x010a) ACC_PRIVATE, ACC_STATIC, ACC_NATIVE

  private static native void waitForReferencePendingList();
    descriptor: ()V
    flags: (0x010a) ACC_PRIVATE, ACC_STATIC, ACC_NATIVE

  private static void processPendingReferences();
    descriptor: ()V
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=3, args_size=0
         0: .line 241
            invokestatic java.lang.ref.Reference.waitForReferencePendingList:()V
         1: .line 243
            getstatic java.lang.ref.Reference.processPendingLock:Ljava/lang/Object;
            dup
            astore 1
            monitorenter
         2: .line 244
            invokestatic java.lang.ref.Reference.getAndClearReferencePendingList:()Ljava/lang/ref/Reference;
            astore 0 /* pendingList */
        start local 0 // java.lang.ref.Reference pendingList
         3: .line 245
            iconst_1
            putstatic java.lang.ref.Reference.processPendingActive:Z
         4: .line 243
            aload 1
            monitorexit
         5: goto 21
        end local 0 // java.lang.ref.Reference pendingList
      StackMap locals: top java.lang.Object
      StackMap stack: java.lang.Throwable
         6: aload 1
            monitorexit
         7: athrow
        start local 0 // java.lang.ref.Reference pendingList
         8: .line 248
      StackMap locals: java.lang.ref.Reference
      StackMap stack:
            aload 0 /* pendingList */
            astore 1 /* ref */
        start local 1 // java.lang.ref.Reference ref
         9: .line 249
            aload 1 /* ref */
            getfield java.lang.ref.Reference.discovered:Ljava/lang/ref/Reference;
            astore 0 /* pendingList */
        10: .line 250
            aload 1 /* ref */
            aconst_null
            putfield java.lang.ref.Reference.discovered:Ljava/lang/ref/Reference;
        11: .line 252
            aload 1 /* ref */
            instanceof jdk.internal.ref.Cleaner
            ifeq 19
        12: .line 253
            aload 1 /* ref */
            checkcast jdk.internal.ref.Cleaner
            invokevirtual jdk.internal.ref.Cleaner.clean:()V
        13: .line 257
            getstatic java.lang.ref.Reference.processPendingLock:Ljava/lang/Object;
            dup
            astore 2
            monitorenter
        14: .line 258
            getstatic java.lang.ref.Reference.processPendingLock:Ljava/lang/Object;
            invokevirtual java.lang.Object.notifyAll:()V
        15: .line 257
            aload 2
            monitorexit
        16: goto 21
      StackMap locals: java.lang.ref.Reference java.lang.ref.Reference java.lang.Object
      StackMap stack: java.lang.Throwable
        17: aload 2
            monitorexit
        18: athrow
        19: .line 261
      StackMap locals:
      StackMap stack:
            aload 1 /* ref */
            getfield java.lang.ref.Reference.queue:Ljava/lang/ref/ReferenceQueue;
            astore 2 /* q */
        start local 2 // java.lang.ref.ReferenceQueue q
        20: .line 262
            aload 2 /* q */
            getstatic java.lang.ref.ReferenceQueue.NULL:Ljava/lang/ref/ReferenceQueue;
            if_acmpeq 21
            aload 2 /* q */
            aload 1 /* ref */
            invokevirtual java.lang.ref.ReferenceQueue.enqueue:(Ljava/lang/ref/Reference;)Z
            pop
        end local 2 // java.lang.ref.ReferenceQueue q
        end local 1 // java.lang.ref.Reference ref
        21: .line 247
      StackMap locals:
      StackMap stack:
            aload 0 /* pendingList */
            ifnonnull 8
        22: .line 266
            getstatic java.lang.ref.Reference.processPendingLock:Ljava/lang/Object;
            dup
            astore 1
            monitorenter
        23: .line 267
            iconst_0
            putstatic java.lang.ref.Reference.processPendingActive:Z
        24: .line 268
            getstatic java.lang.ref.Reference.processPendingLock:Ljava/lang/Object;
            invokevirtual java.lang.Object.notifyAll:()V
        25: .line 266
            aload 1
            monitorexit
        26: goto 29
      StackMap locals: java.lang.ref.Reference java.lang.Object
      StackMap stack: java.lang.Throwable
        27: aload 1
            monitorexit
        28: athrow
        29: .line 270
      StackMap locals:
      StackMap stack:
            return
        end local 0 // java.lang.ref.Reference pendingList
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            3    6     0  pendingList  Ljava/lang/ref/Reference<Ljava/lang/Object;>;
            8   30     0  pendingList  Ljava/lang/ref/Reference<Ljava/lang/Object;>;
            9   21     1          ref  Ljava/lang/ref/Reference<Ljava/lang/Object;>;
           20   21     2            q  Ljava/lang/ref/ReferenceQueue<-Ljava/lang/Object;>;
      Exception table:
        from    to  target  type
           2     5       6  any
           6     7       6  any
          14    16      17  any
          17    18      17  any
          23    26      27  any
          27    28      27  any

  private static boolean waitForReferenceProcessing();
    descriptor: ()Z
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=0
         0: .line 281
            getstatic java.lang.ref.Reference.processPendingLock:Ljava/lang/Object;
            dup
            astore 0
            monitorenter
         1: .line 282
            getstatic java.lang.ref.Reference.processPendingActive:Z
            ifne 2
            invokestatic java.lang.ref.Reference.hasReferencePendingList:()Z
            ifeq 5
         2: .line 284
      StackMap locals: java.lang.Object
      StackMap stack:
            getstatic java.lang.ref.Reference.processPendingLock:Ljava/lang/Object;
            invokevirtual java.lang.Object.wait:()V
         3: .line 285
            aload 0
            monitorexit
         4: iconst_1
            ireturn
         5: .line 287
      StackMap locals:
      StackMap stack:
            aload 0
            monitorexit
         6: iconst_0
            ireturn
         7: .line 281
      StackMap locals:
      StackMap stack: java.lang.Throwable
            aload 0
            monitorexit
         8: athrow
      LocalVariableTable:
        Start  End  Slot  Name  Signature
      Exception table:
        from    to  target  type
           1     4       7  any
           5     6       7  any
           7     8       7  any
    Exceptions:
      throws java.lang.InterruptedException

  public T get();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.lang.ref.Reference this
         0: .line 333
            aload 0 /* this */
            getfield java.lang.ref.Reference.referent:Ljava/lang/Object;
            areturn
        end local 0 // java.lang.ref.Reference this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Ljava/lang/ref/Reference<TT;>;
    Signature: ()TT;
    RuntimeVisibleAnnotations: 
      jdk.internal.HotSpotIntrinsicCandidate()

  public void clear();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.lang.ref.Reference this
         0: .line 344
            aload 0 /* this */
            aconst_null
            putfield java.lang.ref.Reference.referent:Ljava/lang/Object;
         1: .line 345
            return
        end local 0 // java.lang.ref.Reference this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Ljava/lang/ref/Reference<TT;>;

  public boolean isEnqueued();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.lang.ref.Reference this
         0: .line 359
            aload 0 /* this */
            getfield java.lang.ref.Reference.queue:Ljava/lang/ref/ReferenceQueue;
            getstatic java.lang.ref.ReferenceQueue.ENQUEUED:Ljava/lang/ref/ReferenceQueue;
            if_acmpne 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // java.lang.ref.Reference this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Ljava/lang/ref/Reference<TT;>;

  public boolean enqueue();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.lang.ref.Reference this
         0: .line 374
            aload 0 /* this */
            aconst_null
            putfield java.lang.ref.Reference.referent:Ljava/lang/Object;
         1: .line 375
            aload 0 /* this */
            getfield java.lang.ref.Reference.queue:Ljava/lang/ref/ReferenceQueue;
            aload 0 /* this */
            invokevirtual java.lang.ref.ReferenceQueue.enqueue:(Ljava/lang/ref/Reference;)Z
            ireturn
        end local 0 // java.lang.ref.Reference this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Ljava/lang/ref/Reference<TT;>;

  protected java.lang.Object clone();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.lang.ref.Reference this
         0: .line 389
            new java.lang.CloneNotSupportedException
            dup
            invokespecial java.lang.CloneNotSupportedException.<init>:()V
            athrow
        end local 0 // java.lang.ref.Reference this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Ljava/lang/ref/Reference<TT;>;
    Exceptions:
      throws java.lang.CloneNotSupportedException

  void <init>();
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // java.lang.ref.Reference this
        start local 1 // java.lang.Object referent
         0: .line 395
            aload 0 /* this */
            aload 1 /* referent */
            aconst_null
            invokespecial java.lang.ref.Reference.<init>:(Ljava/lang/Object;Ljava/lang/ref/ReferenceQueue;)V
         1: .line 396
            return
        end local 1 // java.lang.Object referent
        end local 0 // java.lang.ref.Reference this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Ljava/lang/ref/Reference<TT;>;
            0    2     1  referent  TT;
    Signature: (TT;)V
    MethodParameters:
          Name  Flags
      referent  

  void <init>(T, java.lang.ref.ReferenceQueue<? super T>);
    descriptor: (Ljava/lang/Object;Ljava/lang/ref/ReferenceQueue;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // java.lang.ref.Reference this
        start local 1 // java.lang.Object referent
        start local 2 // java.lang.ref.ReferenceQueue queue
         0: .line 398
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 399
            aload 0 /* this */
            aload 1 /* referent */
            putfield java.lang.ref.Reference.referent:Ljava/lang/Object;
         2: .line 400
            aload 0 /* this */
            aload 2 /* queue */
            ifnonnull 3
            getstatic java.lang.ref.ReferenceQueue.NULL:Ljava/lang/ref/ReferenceQueue;
            goto 4
      StackMap locals: java.lang.ref.Reference java.lang.Object java.lang.ref.ReferenceQueue
      StackMap stack: java.lang.ref.Reference
         3: aload 2 /* queue */
      StackMap locals: java.lang.ref.Reference java.lang.Object java.lang.ref.ReferenceQueue
      StackMap stack: java.lang.ref.Reference java.lang.ref.ReferenceQueue
         4: putfield java.lang.ref.Reference.queue:Ljava/lang/ref/ReferenceQueue;
         5: .line 401
            return
        end local 2 // java.lang.ref.ReferenceQueue queue
        end local 1 // java.lang.Object referent
        end local 0 // java.lang.ref.Reference this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    6     0      this  Ljava/lang/ref/Reference<TT;>;
            0    6     1  referent  TT;
            0    6     2     queue  Ljava/lang/ref/ReferenceQueue<-TT;>;
    Signature: (TT;Ljava/lang/ref/ReferenceQueue<-TT;>;)V
    MethodParameters:
          Name  Flags
      referent  
      queue     

  public static void reachabilityFence(java.lang.Object);
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=0, locals=1, args_size=1
        start local 0 // java.lang.Object ref
         0: .line 519
            return
        end local 0 // java.lang.Object ref
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0   ref  Ljava/lang/Object;
    RuntimeVisibleAnnotations: 
      jdk.internal.vm.annotation.ForceInline()
    MethodParameters:
      Name  Flags
      ref   
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;
SourceFile: "Reference.java"
NestMembers:
  java.lang.ref.Reference$1  java.lang.ref.Reference$ReferenceHandler
InnerClasses:
  java.lang.ref.Reference$1
  private ReferenceHandler = java.lang.ref.Reference$ReferenceHandler of java.lang.ref.Reference