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public class com.google.common.base.FinalizableReferenceQueue implements java.io.Closeable
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.google.common.base.FinalizableReferenceQueue
  super_class: java.lang.Object
{
  private static final java.util.logging.Logger logger;
    descriptor: Ljava/util/logging/Logger;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static final java.lang.String FINALIZER_CLASS_NAME;
    descriptor: Ljava/lang/String;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: "com.google.common.base.internal.Finalizer"

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

  final java.lang.ref.ReferenceQueue<java.lang.Object> queue;
    descriptor: Ljava/lang/ref/ReferenceQueue;
    flags: (0x0010) ACC_FINAL
    Signature: Ljava/lang/ref/ReferenceQueue<Ljava/lang/Object;>;

  final java.lang.ref.PhantomReference<java.lang.Object> frqRef;
    descriptor: Ljava/lang/ref/PhantomReference;
    flags: (0x0010) ACC_FINAL
    Signature: Ljava/lang/ref/PhantomReference<Ljava/lang/Object;>;

  final boolean threadStarted;
    descriptor: Z
    flags: (0x0010) ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=5, locals=1, args_size=0
         0: .line 133
            ldc Lcom/google/common/base/FinalizableReferenceQueue;
            invokevirtual java.lang.Class.getName:()Ljava/lang/String;
            invokestatic java.util.logging.Logger.getLogger:(Ljava/lang/String;)Ljava/util/logging/Logger;
            putstatic com.google.common.base.FinalizableReferenceQueue.logger:Ljava/util/logging/Logger;
         1: .line 141
            iconst_3
            anewarray com.google.common.base.FinalizableReferenceQueue$FinalizerLoader
            dup
            iconst_0
         2: .line 142
            new com.google.common.base.FinalizableReferenceQueue$SystemLoader
            dup
            invokespecial com.google.common.base.FinalizableReferenceQueue$SystemLoader.<init>:()V
            aastore
            dup
            iconst_1
            new com.google.common.base.FinalizableReferenceQueue$DecoupledLoader
            dup
            invokespecial com.google.common.base.FinalizableReferenceQueue$DecoupledLoader.<init>:()V
            aastore
            dup
            iconst_2
            new com.google.common.base.FinalizableReferenceQueue$DirectLoader
            dup
            invokespecial com.google.common.base.FinalizableReferenceQueue$DirectLoader.<init>:()V
            aastore
            invokestatic com.google.common.base.FinalizableReferenceQueue.loadFinalizer:([Lcom/google/common/base/FinalizableReferenceQueue$FinalizerLoader;)Ljava/lang/Class;
            astore 0 /* finalizer */
        start local 0 // java.lang.Class finalizer
         3: .line 143
            aload 0 /* finalizer */
            invokestatic com.google.common.base.FinalizableReferenceQueue.getStartFinalizer:(Ljava/lang/Class;)Ljava/lang/reflect/Method;
            putstatic com.google.common.base.FinalizableReferenceQueue.startFinalizer:Ljava/lang/reflect/Method;
        end local 0 // java.lang.Class finalizer
         4: .line 144
            return
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            3    4     0  finalizer  Ljava/lang/Class<*>;

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=3, args_size=1
        start local 0 // com.google.common.base.FinalizableReferenceQueue this
         0: .line 155
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 157
            aload 0 /* this */
            new java.lang.ref.ReferenceQueue
            dup
            invokespecial java.lang.ref.ReferenceQueue.<init>:()V
            putfield com.google.common.base.FinalizableReferenceQueue.queue:Ljava/lang/ref/ReferenceQueue;
         2: .line 158
            aload 0 /* this */
            new java.lang.ref.PhantomReference
            dup
            aload 0 /* this */
            aload 0 /* this */
            getfield com.google.common.base.FinalizableReferenceQueue.queue:Ljava/lang/ref/ReferenceQueue;
            invokespecial java.lang.ref.PhantomReference.<init>:(Ljava/lang/Object;Ljava/lang/ref/ReferenceQueue;)V
            putfield com.google.common.base.FinalizableReferenceQueue.frqRef:Ljava/lang/ref/PhantomReference;
         3: .line 159
            iconst_0
            istore 1 /* threadStarted */
        start local 1 // boolean threadStarted
         4: .line 161
            getstatic com.google.common.base.FinalizableReferenceQueue.startFinalizer:Ljava/lang/reflect/Method;
            aconst_null
            iconst_3
            anewarray java.lang.Object
            dup
            iconst_0
            ldc Lcom/google/common/base/FinalizableReference;
            aastore
            dup
            iconst_1
            aload 0 /* this */
            getfield com.google.common.base.FinalizableReferenceQueue.queue:Ljava/lang/ref/ReferenceQueue;
            aastore
            dup
            iconst_2
            aload 0 /* this */
            getfield com.google.common.base.FinalizableReferenceQueue.frqRef:Ljava/lang/ref/PhantomReference;
            aastore
            invokevirtual java.lang.reflect.Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            pop
         5: .line 162
            iconst_1
            istore 1 /* threadStarted */
         6: .line 163
            goto 15
      StackMap locals: com.google.common.base.FinalizableReferenceQueue int
      StackMap stack: java.lang.IllegalAccessException
         7: astore 2 /* impossible */
        start local 2 // java.lang.IllegalAccessException impossible
         8: .line 164
            new java.lang.AssertionError
            dup
            aload 2 /* impossible */
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
        end local 2 // java.lang.IllegalAccessException impossible
         9: .line 165
      StackMap locals:
      StackMap stack: java.lang.Throwable
            astore 2 /* t */
        start local 2 // java.lang.Throwable t
        10: .line 166
            getstatic com.google.common.base.FinalizableReferenceQueue.logger:Ljava/util/logging/Logger;
        11: .line 167
            getstatic java.util.logging.Level.INFO:Ljava/util/logging/Level;
        12: .line 168
            ldc "Failed to start reference finalizer thread. Reference cleanup will only occur when new references are created."
        13: .line 170
            aload 2 /* t */
        14: .line 166
            invokevirtual java.util.logging.Logger.log:(Ljava/util/logging/Level;Ljava/lang/String;Ljava/lang/Throwable;)V
        end local 2 // java.lang.Throwable t
        15: .line 173
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iload 1 /* threadStarted */
            putfield com.google.common.base.FinalizableReferenceQueue.threadStarted:Z
        16: .line 174
            return
        end local 1 // boolean threadStarted
        end local 0 // com.google.common.base.FinalizableReferenceQueue this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   17     0           this  Lcom/google/common/base/FinalizableReferenceQueue;
            4   17     1  threadStarted  Z
            8    9     2     impossible  Ljava/lang/IllegalAccessException;
           10   15     2              t  Ljava/lang/Throwable;
      Exception table:
        from    to  target  type
           4     6       7  Class java.lang.IllegalAccessException
           4     6       9  Class java.lang.Throwable

  public void close();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.base.FinalizableReferenceQueue this
         0: .line 178
            aload 0 /* this */
            getfield com.google.common.base.FinalizableReferenceQueue.frqRef:Ljava/lang/ref/PhantomReference;
            invokevirtual java.lang.ref.PhantomReference.enqueue:()Z
            pop
         1: .line 179
            aload 0 /* this */
            invokevirtual com.google.common.base.FinalizableReferenceQueue.cleanUp:()V
         2: .line 180
            return
        end local 0 // com.google.common.base.FinalizableReferenceQueue this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/google/common/base/FinalizableReferenceQueue;

  void cleanUp();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=4, locals=3, args_size=1
        start local 0 // com.google.common.base.FinalizableReferenceQueue this
         0: .line 188
            aload 0 /* this */
            getfield com.google.common.base.FinalizableReferenceQueue.threadStarted:Z
            ifeq 7
         1: .line 189
            return
        start local 1 // java.lang.ref.Reference reference
         2: .line 198
      StackMap locals: java.lang.ref.Reference
      StackMap stack:
            aload 1 /* reference */
            invokevirtual java.lang.ref.Reference.clear:()V
         3: .line 200
            aload 1 /* reference */
            checkcast com.google.common.base.FinalizableReference
            invokeinterface com.google.common.base.FinalizableReference.finalizeReferent:()V
         4: .line 201
            goto 7
      StackMap locals:
      StackMap stack: java.lang.Throwable
         5: astore 2 /* t */
        start local 2 // java.lang.Throwable t
         6: .line 202
            getstatic com.google.common.base.FinalizableReferenceQueue.logger:Ljava/util/logging/Logger;
            getstatic java.util.logging.Level.SEVERE:Ljava/util/logging/Level;
            ldc "Error cleaning up after reference."
            aload 2 /* t */
            invokevirtual java.util.logging.Logger.log:(Ljava/util/logging/Level;Ljava/lang/String;Ljava/lang/Throwable;)V
        end local 2 // java.lang.Throwable t
        end local 1 // java.lang.ref.Reference reference
         7: .line 193
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.google.common.base.FinalizableReferenceQueue.queue:Ljava/lang/ref/ReferenceQueue;
            invokevirtual java.lang.ref.ReferenceQueue.poll:()Ljava/lang/ref/Reference;
            dup
            astore 1 /* reference */
        start local 1 // java.lang.ref.Reference reference
         8: ifnonnull 2
         9: .line 205
            return
        end local 1 // java.lang.ref.Reference reference
        end local 0 // com.google.common.base.FinalizableReferenceQueue this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   10     0       this  Lcom/google/common/base/FinalizableReferenceQueue;
            2    7     1  reference  Ljava/lang/ref/Reference<*>;
            8   10     1  reference  Ljava/lang/ref/Reference<*>;
            6    7     2          t  Ljava/lang/Throwable;
      Exception table:
        from    to  target  type
           3     4       5  Class java.lang.Throwable

  private static java.lang.Class<?> loadFinalizer(com.google.common.base.FinalizableReferenceQueue$FinalizerLoader[]);
    descriptor: ([Lcom/google/common/base/FinalizableReferenceQueue$FinalizerLoader;)Ljava/lang/Class;
    flags: (0x008a) ACC_PRIVATE, ACC_STATIC, ACC_VARARGS
    Code:
      stack=2, locals=6, args_size=1
        start local 0 // com.google.common.base.FinalizableReferenceQueue$FinalizerLoader[] loaders
         0: .line 213
            aload 0 /* loaders */
            dup
            astore 4
            arraylength
            istore 3
            iconst_0
            istore 2
            goto 6
      StackMap locals: com.google.common.base.FinalizableReferenceQueue$FinalizerLoader[] top int int com.google.common.base.FinalizableReferenceQueue$FinalizerLoader[]
      StackMap stack:
         1: aload 4
            iload 2
            aaload
            astore 1 /* loader */
        start local 1 // com.google.common.base.FinalizableReferenceQueue$FinalizerLoader loader
         2: .line 214
            aload 1 /* loader */
            invokeinterface com.google.common.base.FinalizableReferenceQueue$FinalizerLoader.loadFinalizer:()Ljava/lang/Class;
            astore 5 /* finalizer */
        start local 5 // java.lang.Class finalizer
         3: .line 215
            aload 5 /* finalizer */
            ifnull 5
         4: .line 216
            aload 5 /* finalizer */
            areturn
        end local 5 // java.lang.Class finalizer
        end local 1 // com.google.common.base.FinalizableReferenceQueue$FinalizerLoader loader
         5: .line 213
      StackMap locals:
      StackMap stack:
            iinc 2 1
      StackMap locals:
      StackMap stack:
         6: iload 2
            iload 3
            if_icmplt 1
         7: .line 220
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
        end local 0 // com.google.common.base.FinalizableReferenceQueue$FinalizerLoader[] loaders
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    8     0    loaders  [Lcom/google/common/base/FinalizableReferenceQueue$FinalizerLoader;
            2    5     1     loader  Lcom/google/common/base/FinalizableReferenceQueue$FinalizerLoader;
            3    5     5  finalizer  Ljava/lang/Class<*>;
    Signature: ([Lcom/google/common/base/FinalizableReferenceQueue$FinalizerLoader;)Ljava/lang/Class<*>;
    MethodParameters:
         Name  Flags
      loaders  

  static java.lang.reflect.Method getStartFinalizer(java.lang.Class<?>);
    descriptor: (Ljava/lang/Class;)Ljava/lang/reflect/Method;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=6, locals=2, args_size=1
        start local 0 // java.lang.Class finalizer
         0: .line 346
            aload 0 /* finalizer */
         1: .line 347
            ldc "startFinalizer"
            iconst_3
            anewarray java.lang.Class
            dup
            iconst_0
            ldc Ljava/lang/Class;
            aastore
            dup
            iconst_1
            ldc Ljava/lang/ref/ReferenceQueue;
            aastore
            dup
            iconst_2
            ldc Ljava/lang/ref/PhantomReference;
            aastore
         2: .line 346
            invokevirtual java.lang.Class.getMethod:(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
         3: areturn
         4: .line 348
      StackMap locals:
      StackMap stack: java.lang.NoSuchMethodException
            astore 1 /* e */
        start local 1 // java.lang.NoSuchMethodException e
         5: .line 349
            new java.lang.AssertionError
            dup
            aload 1 /* e */
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
        end local 1 // java.lang.NoSuchMethodException e
        end local 0 // java.lang.Class finalizer
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    6     0  finalizer  Ljava/lang/Class<*>;
            5    6     1          e  Ljava/lang/NoSuchMethodException;
      Exception table:
        from    to  target  type
           0     3       4  Class java.lang.NoSuchMethodException
    Signature: (Ljava/lang/Class<*>;)Ljava/lang/reflect/Method;
    MethodParameters:
           Name  Flags
      finalizer  
}
SourceFile: "FinalizableReferenceQueue.java"
NestMembers:
  com.google.common.base.FinalizableReferenceQueue$DecoupledLoader  com.google.common.base.FinalizableReferenceQueue$DirectLoader  com.google.common.base.FinalizableReferenceQueue$FinalizerLoader  com.google.common.base.FinalizableReferenceQueue$SystemLoader
InnerClasses:
  DecoupledLoader = com.google.common.base.FinalizableReferenceQueue$DecoupledLoader of com.google.common.base.FinalizableReferenceQueue
  DirectLoader = com.google.common.base.FinalizableReferenceQueue$DirectLoader of com.google.common.base.FinalizableReferenceQueue
  abstract FinalizerLoader = com.google.common.base.FinalizableReferenceQueue$FinalizerLoader of com.google.common.base.FinalizableReferenceQueue
  SystemLoader = com.google.common.base.FinalizableReferenceQueue$SystemLoader of com.google.common.base.FinalizableReferenceQueue
    RuntimeInvisibleAnnotations: 
      com.google.common.annotations.GwtIncompatible()