https://www.graalvm.org/ 
final class com.oracle.svm.core.genscavenge.PinnedObjectImpl implements org.graalvm.nativeimage.PinnedObject
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.oracle.svm.core.genscavenge.PinnedObjectImpl
  super_class: java.lang.Object
{
  private final java.lang.Object referent;
    descriptor: Ljava/lang/Object;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private volatile boolean open;
    descriptor: Z
    flags: (0x0042) ACC_PRIVATE, ACC_VOLATILE

  private com.oracle.svm.core.genscavenge.PinnedObjectImpl next;
    descriptor: Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
    flags: (0x0002) ACC_PRIVATE

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 46
            ldc Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic com.oracle.svm.core.genscavenge.PinnedObjectImpl.$assertionsDisabled:Z
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  static void pushPinnedObject(com.oracle.svm.core.genscavenge.PinnedObjectImpl);
    descriptor: (Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;)V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=5, args_size=1
        start local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl newHead
         0: .line 84
            invokestatic com.oracle.svm.core.log.Log.noopLog:()Lcom/oracle/svm/core/log/Log;
            ldc "[PinnedObject.pushPinnedObject:"
            invokevirtual com.oracle.svm.core.log.Log.string:(Ljava/lang/String;)Lcom/oracle/svm/core/log/Log;
            ldc "  newHead: "
            invokevirtual com.oracle.svm.core.log.Log.string:(Ljava/lang/String;)Lcom/oracle/svm/core/log/Log;
            aload 0 /* newHead */
            invokevirtual com.oracle.svm.core.log.Log.object:(Ljava/lang/Object;)Lcom/oracle/svm/core/log/Log;
            astore 1 /* trace */
        start local 1 // com.oracle.svm.core.log.Log trace
         1: .line 85
            invokestatic com.oracle.svm.core.genscavenge.HeapImpl.getHeapImpl:()Lcom/oracle/svm/core/genscavenge/HeapImpl;
            astore 2 /* heap */
        start local 2 // com.oracle.svm.core.genscavenge.HeapImpl heap
         2: .line 86
            aload 2 /* heap */
            invokevirtual com.oracle.svm.core.genscavenge.HeapImpl.getPinHead:()Lcom/oracle/svm/core/jdk/UninterruptibleUtils$AtomicReference;
            astore 3 /* pinHead */
        start local 3 // com.oracle.svm.core.jdk.UninterruptibleUtils$AtomicReference pinHead
         3: .line 89
      StackMap locals: com.oracle.svm.core.log.Log com.oracle.svm.core.genscavenge.HeapImpl com.oracle.svm.core.jdk.UninterruptibleUtils$AtomicReference
      StackMap stack:
            aload 3 /* pinHead */
            invokevirtual com.oracle.svm.core.jdk.UninterruptibleUtils$AtomicReference.get:()Ljava/lang/Object;
            checkcast com.oracle.svm.core.genscavenge.PinnedObjectImpl
            astore 4 /* sampleHead */
        start local 4 // com.oracle.svm.core.genscavenge.PinnedObjectImpl sampleHead
         4: .line 90
            aload 0 /* newHead */
            aload 4 /* sampleHead */
            putfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.next:Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
         5: .line 91
            aload 3 /* pinHead */
            aload 4 /* sampleHead */
            aload 0 /* newHead */
            invokevirtual com.oracle.svm.core.jdk.UninterruptibleUtils$AtomicReference.compareAndSet:(Ljava/lang/Object;Ljava/lang/Object;)Z
            ifeq 3
         6: .line 92
            aload 1 /* trace */
            ldc "  returns: "
            invokevirtual com.oracle.svm.core.log.Log.string:(Ljava/lang/String;)Lcom/oracle/svm/core/log/Log;
            aload 0 /* newHead */
            invokevirtual com.oracle.svm.core.log.Log.object:(Ljava/lang/Object;)Lcom/oracle/svm/core/log/Log;
            ldc "]"
            invokevirtual com.oracle.svm.core.log.Log.string:(Ljava/lang/String;)Lcom/oracle/svm/core/log/Log;
            invokevirtual com.oracle.svm.core.log.Log.newline:()Lcom/oracle/svm/core/log/Log;
            pop
         7: .line 93
            return
        end local 4 // com.oracle.svm.core.genscavenge.PinnedObjectImpl sampleHead
        end local 3 // com.oracle.svm.core.jdk.UninterruptibleUtils$AtomicReference pinHead
        end local 2 // com.oracle.svm.core.genscavenge.HeapImpl heap
        end local 1 // com.oracle.svm.core.log.Log trace
        end local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl newHead
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    8     0     newHead  Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
            1    8     1       trace  Lcom/oracle/svm/core/log/Log;
            2    8     2        heap  Lcom/oracle/svm/core/genscavenge/HeapImpl;
            3    8     3     pinHead  Lcom/oracle/svm/core/jdk/UninterruptibleUtils$AtomicReference<Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;>;
            4    8     4  sampleHead  Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
    MethodParameters:
         Name  Flags
      newHead  

  static com.oracle.svm.core.genscavenge.PinnedObjectImpl claimPinnedObjectList();
    descriptor: ()Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=4, args_size=0
         0: .line 97
            invokestatic com.oracle.svm.core.log.Log.noopLog:()Lcom/oracle/svm/core/log/Log;
            ldc "[PinnedObject.claimPinnedObjectList:"
            invokevirtual com.oracle.svm.core.log.Log.string:(Ljava/lang/String;)Lcom/oracle/svm/core/log/Log;
            invokevirtual com.oracle.svm.core.log.Log.newline:()Lcom/oracle/svm/core/log/Log;
            astore 0 /* trace */
        start local 0 // com.oracle.svm.core.log.Log trace
         1: .line 98
            invokestatic com.oracle.svm.core.genscavenge.HeapImpl.getHeapImpl:()Lcom/oracle/svm/core/genscavenge/HeapImpl;
            astore 1 /* heap */
        start local 1 // com.oracle.svm.core.genscavenge.HeapImpl heap
         2: .line 99
            aload 1 /* heap */
            invokevirtual com.oracle.svm.core.genscavenge.HeapImpl.getPinHead:()Lcom/oracle/svm/core/jdk/UninterruptibleUtils$AtomicReference;
            astore 2 /* pinHead */
        start local 2 // com.oracle.svm.core.jdk.UninterruptibleUtils$AtomicReference pinHead
         3: .line 100
            aload 2 /* pinHead */
            aconst_null
            invokevirtual com.oracle.svm.core.jdk.UninterruptibleUtils$AtomicReference.getAndSet:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast com.oracle.svm.core.genscavenge.PinnedObjectImpl
            astore 3 /* result */
        start local 3 // com.oracle.svm.core.genscavenge.PinnedObjectImpl result
         4: .line 101
            aload 0 /* trace */
            ldc "  returns: "
            invokevirtual com.oracle.svm.core.log.Log.string:(Ljava/lang/String;)Lcom/oracle/svm/core/log/Log;
            aload 3 /* result */
            invokevirtual com.oracle.svm.core.log.Log.object:(Ljava/lang/Object;)Lcom/oracle/svm/core/log/Log;
            pop
         5: .line 102
            aload 3 /* result */
            areturn
        end local 3 // com.oracle.svm.core.genscavenge.PinnedObjectImpl result
        end local 2 // com.oracle.svm.core.jdk.UninterruptibleUtils$AtomicReference pinHead
        end local 1 // com.oracle.svm.core.genscavenge.HeapImpl heap
        end local 0 // com.oracle.svm.core.log.Log trace
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            1    6     0    trace  Lcom/oracle/svm/core/log/Log;
            2    6     1     heap  Lcom/oracle/svm/core/genscavenge/HeapImpl;
            3    6     2  pinHead  Lcom/oracle/svm/core/jdk/UninterruptibleUtils$AtomicReference<Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;>;
            4    6     3   result  Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;

  void <init>(java.lang.Object);
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
        start local 1 // java.lang.Object object
         0: .line 112
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 107
            aload 0 /* this */
            iconst_1
            putfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.open:Z
         2: .line 113
            aload 0 /* this */
            aload 1 /* object */
            putfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.referent:Ljava/lang/Object;
         3: .line 114
            return
        end local 1 // java.lang.Object object
        end local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0    this  Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
            0    4     1  object  Ljava/lang/Object;
    MethodParameters:
        Name  Flags
      object  

  public void close();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
         0: .line 119
            getstatic com.oracle.svm.core.genscavenge.PinnedObjectImpl.$assertionsDisabled:Z
            ifne 1
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.open:Z
            ifne 1
            new java.lang.AssertionError
            dup
            ldc "Should not call close() on a closed PinnedObject."
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
         1: .line 120
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iconst_0
            putfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.open:Z
         2: .line 121
            return
        end local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
    RuntimeVisibleAnnotations: 
      com.oracle.svm.core.annotate.Uninterruptible(reason = "Called from uninterruptible code.", mayBeInlined = true)

  public java.lang.Object getObject();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
         0: .line 125
            getstatic com.oracle.svm.core.genscavenge.PinnedObjectImpl.$assertionsDisabled:Z
            ifne 1
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.open:Z
            ifne 1
            new java.lang.AssertionError
            dup
            ldc "Should not call getObject() on a closed PinnedObject."
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
         1: .line 126
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.referent:Ljava/lang/Object;
            areturn
        end local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;

  public org.graalvm.word.Pointer addressOfObject();
    descriptor: ()Lorg/graalvm/word/Pointer;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
         0: .line 131
            getstatic com.oracle.svm.core.genscavenge.PinnedObjectImpl.$assertionsDisabled:Z
            ifne 1
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.open:Z
            ifne 1
            new java.lang.AssertionError
            dup
            ldc "Should not call addressOfObject() on a closed PinnedObject."
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
         1: .line 132
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.referent:Ljava/lang/Object;
            invokestatic org.graalvm.compiler.word.Word.objectToUntrackedPointer:(Ljava/lang/Object;)Lorg/graalvm/compiler/word/Word;
            areturn
        end local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;

  public <T extends org.graalvm.word.PointerBase> T addressOfArrayElement();
    descriptor: (I)Lorg/graalvm/word/PointerBase;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=2
        start local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
        start local 1 // int index
         0: .line 138
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.referent:Ljava/lang/Object;
            ifnonnull 2
         1: .line 139
            new java.lang.NullPointerException
            dup
            ldc "null PinnedObject"
            invokespecial java.lang.NullPointerException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 141
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.referent:Ljava/lang/Object;
            invokestatic com.oracle.svm.core.heap.ObjectHeader.readDynamicHubFromObject:(Ljava/lang/Object;)Lcom/oracle/svm/core/hub/DynamicHub;
            astore 2 /* hub */
        start local 2 // com.oracle.svm.core.hub.DynamicHub hub
         3: .line 142
            aload 2 /* hub */
            invokevirtual com.oracle.svm.core.hub.DynamicHub.getLayoutEncoding:()I
            iload 1 /* index */
            invokestatic com.oracle.svm.core.hub.LayoutEncoding.getArrayElementOffset:(II)Lorg/graalvm/word/UnsignedWord;
            astore 3 /* offsetOfArrayElement */
        start local 3 // org.graalvm.word.UnsignedWord offsetOfArrayElement
         4: .line 143
            aload 0 /* this */
            invokevirtual com.oracle.svm.core.genscavenge.PinnedObjectImpl.addressOfObject:()Lorg/graalvm/word/Pointer;
            aload 3 /* offsetOfArrayElement */
            invokeinterface org.graalvm.word.Pointer.add:(Lorg/graalvm/word/UnsignedWord;)Lorg/graalvm/word/Pointer;
            areturn
        end local 3 // org.graalvm.word.UnsignedWord offsetOfArrayElement
        end local 2 // com.oracle.svm.core.hub.DynamicHub hub
        end local 1 // int index
        end local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
      LocalVariableTable:
        Start  End  Slot                  Name  Signature
            0    5     0                  this  Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
            0    5     1                 index  I
            3    5     2                   hub  Lcom/oracle/svm/core/hub/DynamicHub;
            4    5     3  offsetOfArrayElement  Lorg/graalvm/word/UnsignedWord;
    Signature: <T::Lorg/graalvm/word/PointerBase;>(I)TT;
    MethodParameters:
       Name  Flags
      index  

  public boolean isOpen();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
         0: .line 147
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.open:Z
            ireturn
        end local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;

  public com.oracle.svm.core.genscavenge.PinnedObjectImpl getNext();
    descriptor: ()Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
         0: .line 151
            aload 0 /* this */
            getfield com.oracle.svm.core.genscavenge.PinnedObjectImpl.next:Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;
            areturn
        end local 0 // com.oracle.svm.core.genscavenge.PinnedObjectImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/svm/core/genscavenge/PinnedObjectImpl;

  public org.graalvm.word.PointerBase addressOfObject();
    descriptor: ()Lorg/graalvm/word/PointerBase;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual com.oracle.svm.core.genscavenge.PinnedObjectImpl.addressOfObject:()Lorg/graalvm/word/Pointer;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "PinnedObjectImpl.java"
NestMembers:
  com.oracle.svm.core.genscavenge.PinnedObjectImpl$PinnedObjectFeature  com.oracle.svm.core.genscavenge.PinnedObjectImpl$PinnedObjectSupportImpl
InnerClasses:
  PinnedObjectFeature = com.oracle.svm.core.genscavenge.PinnedObjectImpl$PinnedObjectFeature of com.oracle.svm.core.genscavenge.PinnedObjectImpl
  PinnedObjectSupportImpl = com.oracle.svm.core.genscavenge.PinnedObjectImpl$PinnedObjectSupportImpl of com.oracle.svm.core.genscavenge.PinnedObjectImpl
  public AtomicReference = com.oracle.svm.core.jdk.UninterruptibleUtils$AtomicReference of com.oracle.svm.core.jdk.UninterruptibleUtils