http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
final class io.netty.buffer.PoolSubpage<T> implements io.netty.buffer.PoolSubpageMetric
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: io.netty.buffer.PoolSubpage
  super_class: java.lang.Object
{
  final io.netty.buffer.PoolChunk<T> chunk;
    descriptor: Lio/netty/buffer/PoolChunk;
    flags: (0x0010) ACC_FINAL
    Signature: Lio/netty/buffer/PoolChunk<TT;>;

  private final int memoryMapIdx;
    descriptor: I
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final int runOffset;
    descriptor: I
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final int pageSize;
    descriptor: I
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final long[] bitmap;
    descriptor: [J
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  io.netty.buffer.PoolSubpage<T> prev;
    descriptor: Lio/netty/buffer/PoolSubpage;
    flags: (0x0000) 
    Signature: Lio/netty/buffer/PoolSubpage<TT;>;

  io.netty.buffer.PoolSubpage<T> next;
    descriptor: Lio/netty/buffer/PoolSubpage;
    flags: (0x0000) 
    Signature: Lio/netty/buffer/PoolSubpage<TT;>;

  boolean doNotDestroy;
    descriptor: Z
    flags: (0x0000) 

  int elemSize;
    descriptor: I
    flags: (0x0000) 

  private int maxNumElems;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  private int bitmapLength;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  private int nextAvail;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  private int numAvail;
    descriptor: I
    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 19
            ldc Lio/netty/buffer/PoolSubpage;
            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 io.netty.buffer.PoolSubpage.$assertionsDisabled:Z
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>(int);
    descriptor: (I)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.buffer.PoolSubpage this
        start local 1 // int pageSize
         0: .line 41
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 42
            aload 0 /* this */
            aconst_null
            putfield io.netty.buffer.PoolSubpage.chunk:Lio/netty/buffer/PoolChunk;
         2: .line 43
            aload 0 /* this */
            iconst_m1
            putfield io.netty.buffer.PoolSubpage.memoryMapIdx:I
         3: .line 44
            aload 0 /* this */
            iconst_m1
            putfield io.netty.buffer.PoolSubpage.runOffset:I
         4: .line 45
            aload 0 /* this */
            iconst_m1
            putfield io.netty.buffer.PoolSubpage.elemSize:I
         5: .line 46
            aload 0 /* this */
            iload 1 /* pageSize */
            putfield io.netty.buffer.PoolSubpage.pageSize:I
         6: .line 47
            aload 0 /* this */
            aconst_null
            putfield io.netty.buffer.PoolSubpage.bitmap:[J
         7: .line 48
            return
        end local 1 // int pageSize
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    8     0      this  Lio/netty/buffer/PoolSubpage<TT;>;
            0    8     1  pageSize  I
    MethodParameters:
          Name  Flags
      pageSize  

  void <init>(io.netty.buffer.PoolSubpage<T>, io.netty.buffer.PoolChunk<T>, int, int, int, );
    descriptor: (Lio/netty/buffer/PoolSubpage;Lio/netty/buffer/PoolChunk;IIII)V
    flags: (0x0000) 
    Code:
      stack=3, locals=7, args_size=7
        start local 0 // io.netty.buffer.PoolSubpage this
        start local 1 // io.netty.buffer.PoolSubpage head
        start local 2 // io.netty.buffer.PoolChunk chunk
        start local 3 // int memoryMapIdx
        start local 4 // int runOffset
        start local 5 // int pageSize
        start local 6 // int elemSize
         0: .line 50
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 51
            aload 0 /* this */
            aload 2 /* chunk */
            putfield io.netty.buffer.PoolSubpage.chunk:Lio/netty/buffer/PoolChunk;
         2: .line 52
            aload 0 /* this */
            iload 3 /* memoryMapIdx */
            putfield io.netty.buffer.PoolSubpage.memoryMapIdx:I
         3: .line 53
            aload 0 /* this */
            iload 4 /* runOffset */
            putfield io.netty.buffer.PoolSubpage.runOffset:I
         4: .line 54
            aload 0 /* this */
            iload 5 /* pageSize */
            putfield io.netty.buffer.PoolSubpage.pageSize:I
         5: .line 55
            aload 0 /* this */
            iload 5 /* pageSize */
            bipush 10
            iushr
            newarray 11
            putfield io.netty.buffer.PoolSubpage.bitmap:[J
         6: .line 56
            aload 0 /* this */
            aload 1 /* head */
            iload 6 /* elemSize */
            invokevirtual io.netty.buffer.PoolSubpage.init:(Lio/netty/buffer/PoolSubpage;I)V
         7: .line 57
            return
        end local 6 // int elemSize
        end local 5 // int pageSize
        end local 4 // int runOffset
        end local 3 // int memoryMapIdx
        end local 2 // io.netty.buffer.PoolChunk chunk
        end local 1 // io.netty.buffer.PoolSubpage head
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    8     0          this  Lio/netty/buffer/PoolSubpage<TT;>;
            0    8     1          head  Lio/netty/buffer/PoolSubpage<TT;>;
            0    8     2         chunk  Lio/netty/buffer/PoolChunk<TT;>;
            0    8     3  memoryMapIdx  I
            0    8     4     runOffset  I
            0    8     5      pageSize  I
            0    8     6      elemSize  I
    Signature: (Lio/netty/buffer/PoolSubpage<TT;>;Lio/netty/buffer/PoolChunk<TT;>;IIII)V
    MethodParameters:
              Name  Flags
      head          
      chunk         
      memoryMapIdx  
      runOffset     
      pageSize      
      elemSize      

  void init(io.netty.buffer.PoolSubpage<T>, );
    descriptor: (Lio/netty/buffer/PoolSubpage;I)V
    flags: (0x0000) 
    Code:
      stack=4, locals=4, args_size=3
        start local 0 // io.netty.buffer.PoolSubpage this
        start local 1 // io.netty.buffer.PoolSubpage head
        start local 2 // int elemSize
         0: .line 60
            aload 0 /* this */
            iconst_1
            putfield io.netty.buffer.PoolSubpage.doNotDestroy:Z
         1: .line 61
            aload 0 /* this */
            iload 2 /* elemSize */
            putfield io.netty.buffer.PoolSubpage.elemSize:I
         2: .line 62
            iload 2 /* elemSize */
            ifeq 13
         3: .line 63
            aload 0 /* this */
            aload 0 /* this */
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.pageSize:I
            iload 2 /* elemSize */
            idiv
            dup_x1
            putfield io.netty.buffer.PoolSubpage.numAvail:I
            putfield io.netty.buffer.PoolSubpage.maxNumElems:I
         4: .line 64
            aload 0 /* this */
            iconst_0
            putfield io.netty.buffer.PoolSubpage.nextAvail:I
         5: .line 65
            aload 0 /* this */
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.maxNumElems:I
            bipush 6
            iushr
            putfield io.netty.buffer.PoolSubpage.bitmapLength:I
         6: .line 66
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.maxNumElems:I
            bipush 63
            iand
            ifeq 8
         7: .line 67
            aload 0 /* this */
            dup
            getfield io.netty.buffer.PoolSubpage.bitmapLength:I
            iconst_1
            iadd
            putfield io.netty.buffer.PoolSubpage.bitmapLength:I
         8: .line 70
      StackMap locals:
      StackMap stack:
            iconst_0
            istore 3 /* i */
        start local 3 // int i
         9: goto 12
        10: .line 71
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.bitmap:[J
            iload 3 /* i */
            lconst_0
            lastore
        11: .line 70
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
        12: iload 3 /* i */
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.bitmapLength:I
            if_icmplt 10
        end local 3 // int i
        13: .line 74
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* head */
            invokevirtual io.netty.buffer.PoolSubpage.addToPool:(Lio/netty/buffer/PoolSubpage;)V
        14: .line 75
            return
        end local 2 // int elemSize
        end local 1 // io.netty.buffer.PoolSubpage head
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   15     0      this  Lio/netty/buffer/PoolSubpage<TT;>;
            0   15     1      head  Lio/netty/buffer/PoolSubpage<TT;>;
            0   15     2  elemSize  I
            9   13     3         i  I
    Signature: (Lio/netty/buffer/PoolSubpage<TT;>;I)V
    MethodParameters:
          Name  Flags
      head      
      elemSize  

  long allocate();
    descriptor: ()J
    flags: (0x0000) 
    Code:
      stack=7, locals=4, args_size=1
        start local 0 // io.netty.buffer.PoolSubpage this
         0: .line 81
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.elemSize:I
            ifne 2
         1: .line 82
            aload 0 /* this */
            iconst_0
            invokevirtual io.netty.buffer.PoolSubpage.toHandle:(I)J
            lreturn
         2: .line 85
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.numAvail:I
            ifeq 3
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.doNotDestroy:Z
            ifne 4
         3: .line 86
      StackMap locals:
      StackMap stack:
            ldc -1
            lreturn
         4: .line 89
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            invokevirtual io.netty.buffer.PoolSubpage.getNextAvail:()I
            istore 1 /* bitmapIdx */
        start local 1 // int bitmapIdx
         5: .line 90
            iload 1 /* bitmapIdx */
            bipush 6
            iushr
            istore 2 /* q */
        start local 2 // int q
         6: .line 91
            iload 1 /* bitmapIdx */
            bipush 63
            iand
            istore 3 /* r */
        start local 3 // int r
         7: .line 92
            getstatic io.netty.buffer.PoolSubpage.$assertionsDisabled:Z
            ifne 8
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.bitmap:[J
            iload 2 /* q */
            laload
            iload 3 /* r */
            lushr
            lconst_1
            land
            lconst_0
            lcmp
            ifeq 8
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         8: .line 93
      StackMap locals: int int int
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.bitmap:[J
            iload 2 /* q */
            dup2
            laload
            lconst_1
            iload 3 /* r */
            lshl
            lor
            lastore
         9: .line 95
            aload 0 /* this */
            dup
            getfield io.netty.buffer.PoolSubpage.numAvail:I
            iconst_1
            isub
            dup_x1
            putfield io.netty.buffer.PoolSubpage.numAvail:I
            ifne 11
        10: .line 96
            aload 0 /* this */
            invokevirtual io.netty.buffer.PoolSubpage.removeFromPool:()V
        11: .line 99
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iload 1 /* bitmapIdx */
            invokevirtual io.netty.buffer.PoolSubpage.toHandle:(I)J
            lreturn
        end local 3 // int r
        end local 2 // int q
        end local 1 // int bitmapIdx
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   12     0       this  Lio/netty/buffer/PoolSubpage<TT;>;
            5   12     1  bitmapIdx  I
            6   12     2          q  I
            7   12     3          r  I

  boolean free(io.netty.buffer.PoolSubpage<T>, );
    descriptor: (Lio/netty/buffer/PoolSubpage;I)Z
    flags: (0x0000) 
    Code:
      stack=7, locals=5, args_size=3
        start local 0 // io.netty.buffer.PoolSubpage this
        start local 1 // io.netty.buffer.PoolSubpage head
        start local 2 // int bitmapIdx
         0: .line 107
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.elemSize:I
            ifne 2
         1: .line 108
            iconst_1
            ireturn
         2: .line 110
      StackMap locals:
      StackMap stack:
            iload 2 /* bitmapIdx */
            bipush 6
            iushr
            istore 3 /* q */
        start local 3 // int q
         3: .line 111
            iload 2 /* bitmapIdx */
            bipush 63
            iand
            istore 4 /* r */
        start local 4 // int r
         4: .line 112
            getstatic io.netty.buffer.PoolSubpage.$assertionsDisabled:Z
            ifne 5
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.bitmap:[J
            iload 3 /* q */
            laload
            iload 4 /* r */
            lushr
            lconst_1
            land
            lconst_0
            lcmp
            ifne 5
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         5: .line 113
      StackMap locals: int int
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.bitmap:[J
            iload 3 /* q */
            dup2
            laload
            lconst_1
            iload 4 /* r */
            lshl
            lxor
            lastore
         6: .line 115
            aload 0 /* this */
            iload 2 /* bitmapIdx */
            invokevirtual io.netty.buffer.PoolSubpage.setNextAvail:(I)V
         7: .line 117
            aload 0 /* this */
            dup
            getfield io.netty.buffer.PoolSubpage.numAvail:I
            dup_x1
            iconst_1
            iadd
            putfield io.netty.buffer.PoolSubpage.numAvail:I
            ifne 10
         8: .line 118
            aload 0 /* this */
            aload 1 /* head */
            invokevirtual io.netty.buffer.PoolSubpage.addToPool:(Lio/netty/buffer/PoolSubpage;)V
         9: .line 119
            iconst_1
            ireturn
        10: .line 122
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.numAvail:I
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.maxNumElems:I
            if_icmpeq 12
        11: .line 123
            iconst_1
            ireturn
        12: .line 126
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.prev:Lio/netty/buffer/PoolSubpage;
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
            if_acmpne 14
        13: .line 128
            iconst_1
            ireturn
        14: .line 132
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iconst_0
            putfield io.netty.buffer.PoolSubpage.doNotDestroy:Z
        15: .line 133
            aload 0 /* this */
            invokevirtual io.netty.buffer.PoolSubpage.removeFromPool:()V
        16: .line 134
            iconst_0
            ireturn
        end local 4 // int r
        end local 3 // int q
        end local 2 // int bitmapIdx
        end local 1 // io.netty.buffer.PoolSubpage head
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   17     0       this  Lio/netty/buffer/PoolSubpage<TT;>;
            0   17     1       head  Lio/netty/buffer/PoolSubpage<TT;>;
            0   17     2  bitmapIdx  I
            3   17     3          q  I
            4   17     4          r  I
    Signature: (Lio/netty/buffer/PoolSubpage<TT;>;I)Z
    MethodParameters:
           Name  Flags
      head       
      bitmapIdx  

  private void addToPool(io.netty.buffer.PoolSubpage<T>);
    descriptor: (Lio/netty/buffer/PoolSubpage;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.buffer.PoolSubpage this
        start local 1 // io.netty.buffer.PoolSubpage head
         0: .line 139
            getstatic io.netty.buffer.PoolSubpage.$assertionsDisabled:Z
            ifne 2
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.prev:Lio/netty/buffer/PoolSubpage;
            ifnonnull 1
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
            ifnull 2
      StackMap locals:
      StackMap stack:
         1: new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         2: .line 140
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* head */
            putfield io.netty.buffer.PoolSubpage.prev:Lio/netty/buffer/PoolSubpage;
         3: .line 141
            aload 0 /* this */
            aload 1 /* head */
            getfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
            putfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
         4: .line 142
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
            aload 0 /* this */
            putfield io.netty.buffer.PoolSubpage.prev:Lio/netty/buffer/PoolSubpage;
         5: .line 143
            aload 1 /* head */
            aload 0 /* this */
            putfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
         6: .line 144
            return
        end local 1 // io.netty.buffer.PoolSubpage head
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lio/netty/buffer/PoolSubpage<TT;>;
            0    7     1  head  Lio/netty/buffer/PoolSubpage<TT;>;
    Signature: (Lio/netty/buffer/PoolSubpage<TT;>;)V
    MethodParameters:
      Name  Flags
      head  

  private void removeFromPool();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.buffer.PoolSubpage this
         0: .line 147
            getstatic io.netty.buffer.PoolSubpage.$assertionsDisabled:Z
            ifne 2
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.prev:Lio/netty/buffer/PoolSubpage;
            ifnull 1
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
            ifnonnull 2
      StackMap locals:
      StackMap stack:
         1: new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         2: .line 148
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.prev:Lio/netty/buffer/PoolSubpage;
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
            putfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
         3: .line 149
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.prev:Lio/netty/buffer/PoolSubpage;
            putfield io.netty.buffer.PoolSubpage.prev:Lio/netty/buffer/PoolSubpage;
         4: .line 150
            aload 0 /* this */
            aconst_null
            putfield io.netty.buffer.PoolSubpage.next:Lio/netty/buffer/PoolSubpage;
         5: .line 151
            aload 0 /* this */
            aconst_null
            putfield io.netty.buffer.PoolSubpage.prev:Lio/netty/buffer/PoolSubpage;
         6: .line 152
            return
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lio/netty/buffer/PoolSubpage<TT;>;

  private void setNextAvail(int);
    descriptor: (I)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.buffer.PoolSubpage this
        start local 1 // int bitmapIdx
         0: .line 155
            aload 0 /* this */
            iload 1 /* bitmapIdx */
            putfield io.netty.buffer.PoolSubpage.nextAvail:I
         1: .line 156
            return
        end local 1 // int bitmapIdx
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    2     0       this  Lio/netty/buffer/PoolSubpage<TT;>;
            0    2     1  bitmapIdx  I
    MethodParameters:
           Name  Flags
      bitmapIdx  

  private int getNextAvail();
    descriptor: ()I
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // io.netty.buffer.PoolSubpage this
         0: .line 159
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.nextAvail:I
            istore 1 /* nextAvail */
        start local 1 // int nextAvail
         1: .line 160
            iload 1 /* nextAvail */
            iflt 4
         2: .line 161
            aload 0 /* this */
            iconst_m1
            putfield io.netty.buffer.PoolSubpage.nextAvail:I
         3: .line 162
            iload 1 /* nextAvail */
            ireturn
         4: .line 164
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            invokevirtual io.netty.buffer.PoolSubpage.findNextAvail:()I
            ireturn
        end local 1 // int nextAvail
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    5     0       this  Lio/netty/buffer/PoolSubpage<TT;>;
            1    5     1  nextAvail  I

  private int findNextAvail();
    descriptor: ()I
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=4, locals=6, args_size=1
        start local 0 // io.netty.buffer.PoolSubpage this
         0: .line 168
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.bitmap:[J
            astore 1 /* bitmap */
        start local 1 // long[] bitmap
         1: .line 169
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.bitmapLength:I
            istore 2 /* bitmapLength */
        start local 2 // int bitmapLength
         2: .line 170
            iconst_0
            istore 3 /* i */
        start local 3 // int i
         3: goto 8
         4: .line 171
      StackMap locals: long[] int int
      StackMap stack:
            aload 1 /* bitmap */
            iload 3 /* i */
            laload
            lstore 4 /* bits */
        start local 4 // long bits
         5: .line 172
            lload 4 /* bits */
            ldc -1
            lxor
            lconst_0
            lcmp
            ifeq 7
         6: .line 173
            aload 0 /* this */
            iload 3 /* i */
            lload 4 /* bits */
            invokevirtual io.netty.buffer.PoolSubpage.findNextAvail0:(IJ)I
            ireturn
        end local 4 // long bits
         7: .line 170
      StackMap locals:
      StackMap stack:
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
         8: iload 3 /* i */
            iload 2 /* bitmapLength */
            if_icmplt 4
        end local 3 // int i
         9: .line 176
            iconst_m1
            ireturn
        end local 2 // int bitmapLength
        end local 1 // long[] bitmap
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0   10     0          this  Lio/netty/buffer/PoolSubpage<TT;>;
            1   10     1        bitmap  [J
            2   10     2  bitmapLength  I
            3    9     3             i  I
            5    7     4          bits  J

  private int findNextAvail0(int, long);
    descriptor: (IJ)I
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=4, locals=8, args_size=3
        start local 0 // io.netty.buffer.PoolSubpage this
        start local 1 // int i
        start local 2 // long bits
         0: .line 180
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.maxNumElems:I
            istore 4 /* maxNumElems */
        start local 4 // int maxNumElems
         1: .line 181
            iload 1 /* i */
            bipush 6
            ishl
            istore 5 /* baseVal */
        start local 5 // int baseVal
         2: .line 183
            iconst_0
            istore 6 /* j */
        start local 6 // int j
         3: goto 10
         4: .line 184
      StackMap locals: int int int
      StackMap stack:
            lload 2 /* bits */
            lconst_1
            land
            lconst_0
            lcmp
            ifne 8
         5: .line 185
            iload 5 /* baseVal */
            iload 6 /* j */
            ior
            istore 7 /* val */
        start local 7 // int val
         6: .line 186
            iload 7 /* val */
            iload 4 /* maxNumElems */
            if_icmpge 11
         7: .line 187
            iload 7 /* val */
            ireturn
        end local 7 // int val
         8: .line 192
      StackMap locals:
      StackMap stack:
            lload 2 /* bits */
            iconst_1
            lushr
            lstore 2 /* bits */
         9: .line 183
            iinc 6 /* j */ 1
      StackMap locals:
      StackMap stack:
        10: iload 6 /* j */
            bipush 64
            if_icmplt 4
        end local 6 // int j
        11: .line 194
      StackMap locals:
      StackMap stack:
            iconst_m1
            ireturn
        end local 5 // int baseVal
        end local 4 // int maxNumElems
        end local 2 // long bits
        end local 1 // int i
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   12     0         this  Lio/netty/buffer/PoolSubpage<TT;>;
            0   12     1            i  I
            0   12     2         bits  J
            1   12     4  maxNumElems  I
            2   12     5      baseVal  I
            3   11     6            j  I
            6    8     7          val  I
    MethodParameters:
      Name  Flags
      i     
      bits  

  private long toHandle(int);
    descriptor: (I)J
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // io.netty.buffer.PoolSubpage this
        start local 1 // int bitmapIdx
         0: .line 198
            ldc 4611686018427387904
            iload 1 /* bitmapIdx */
            i2l
            bipush 32
            lshl
            lor
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.memoryMapIdx:I
            i2l
            lor
            lreturn
        end local 1 // int bitmapIdx
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0       this  Lio/netty/buffer/PoolSubpage<TT;>;
            0    1     1  bitmapIdx  I
    MethodParameters:
           Name  Flags
      bitmapIdx  

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=6, args_size=1
        start local 0 // io.netty.buffer.PoolSubpage this
         0: .line 207
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.chunk:Lio/netty/buffer/PoolChunk;
            getfield io.netty.buffer.PoolChunk.arena:Lio/netty/buffer/PoolArena;
            dup
            astore 5
            monitorenter
         1: .line 208
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.doNotDestroy:Z
            ifne 7
         2: .line 209
            iconst_0
            istore 1 /* doNotDestroy */
        start local 1 // boolean doNotDestroy
         3: .line 211
            iconst_m1
            dup
            istore 4 /* elemSize */
        start local 4 // int elemSize
         4: dup
            istore 3 /* numAvail */
        start local 3 // int numAvail
         5: istore 2 /* maxNumElems */
        start local 2 // int maxNumElems
         6: .line 212
            goto 11
        end local 4 // int elemSize
        end local 3 // int numAvail
        end local 2 // int maxNumElems
        end local 1 // boolean doNotDestroy
         7: .line 213
      StackMap locals: io.netty.buffer.PoolSubpage top top top top io.netty.buffer.PoolArena
      StackMap stack:
            iconst_1
            istore 1 /* doNotDestroy */
        start local 1 // boolean doNotDestroy
         8: .line 214
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.maxNumElems:I
            istore 2 /* maxNumElems */
        start local 2 // int maxNumElems
         9: .line 215
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.numAvail:I
            istore 3 /* numAvail */
        start local 3 // int numAvail
        10: .line 216
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.elemSize:I
            istore 4 /* elemSize */
        start local 4 // int elemSize
        11: .line 207
      StackMap locals: io.netty.buffer.PoolSubpage int int int int io.netty.buffer.PoolArena
      StackMap stack:
            aload 5
            monitorexit
        12: goto 15
        end local 4 // int elemSize
        end local 3 // int numAvail
        end local 2 // int maxNumElems
        end local 1 // boolean doNotDestroy
      StackMap locals: io.netty.buffer.PoolSubpage top top top top io.netty.buffer.PoolArena
      StackMap stack: java.lang.Throwable
        13: aload 5
            monitorexit
        14: athrow
        start local 1 // boolean doNotDestroy
        start local 2 // int maxNumElems
        start local 3 // int numAvail
        start local 4 // int elemSize
        15: .line 220
      StackMap locals: io.netty.buffer.PoolSubpage int int int int
      StackMap stack:
            iload 1 /* doNotDestroy */
            ifne 17
        16: .line 221
            new java.lang.StringBuilder
            dup
            ldc "("
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.memoryMapIdx:I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            ldc ": not in use)"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        17: .line 224
      StackMap locals:
      StackMap stack:
            new java.lang.StringBuilder
            dup
            ldc "("
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.memoryMapIdx:I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            ldc ": "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            iload 2 /* maxNumElems */
            iload 3 /* numAvail */
            isub
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            bipush 47
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            iload 2 /* maxNumElems */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
        18: .line 225
            ldc ", offset: "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.runOffset:I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            ldc ", length: "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.pageSize:I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            ldc ", elemSize: "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            iload 4 /* elemSize */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            bipush 41
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
        19: .line 224
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 4 // int elemSize
        end local 3 // int numAvail
        end local 2 // int maxNumElems
        end local 1 // boolean doNotDestroy
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0   20     0          this  Lio/netty/buffer/PoolSubpage<TT;>;
            3    7     1  doNotDestroy  Z
            8   13     1  doNotDestroy  Z
           15   20     1  doNotDestroy  Z
            6    7     2   maxNumElems  I
            9   13     2   maxNumElems  I
           15   20     2   maxNumElems  I
            5    7     3      numAvail  I
           10   13     3      numAvail  I
           15   20     3      numAvail  I
            4    7     4      elemSize  I
           11   13     4      elemSize  I
           15   20     4      elemSize  I
      Exception table:
        from    to  target  type
           1    12      13  any
          13    14      13  any

  public int maxNumElements();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // io.netty.buffer.PoolSubpage this
         0: .line 230
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.chunk:Lio/netty/buffer/PoolChunk;
            getfield io.netty.buffer.PoolChunk.arena:Lio/netty/buffer/PoolArena;
            dup
            astore 1
            monitorenter
         1: .line 231
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.maxNumElems:I
            aload 1
            monitorexit
         2: ireturn
         3: .line 230
      StackMap locals: io.netty.buffer.PoolSubpage io.netty.buffer.PoolArena
      StackMap stack: java.lang.Throwable
            aload 1
            monitorexit
         4: athrow
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lio/netty/buffer/PoolSubpage<TT;>;
      Exception table:
        from    to  target  type
           1     2       3  any
           3     4       3  any

  public int numAvailable();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // io.netty.buffer.PoolSubpage this
         0: .line 237
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.chunk:Lio/netty/buffer/PoolChunk;
            getfield io.netty.buffer.PoolChunk.arena:Lio/netty/buffer/PoolArena;
            dup
            astore 1
            monitorenter
         1: .line 238
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.numAvail:I
            aload 1
            monitorexit
         2: ireturn
         3: .line 237
      StackMap locals: io.netty.buffer.PoolSubpage io.netty.buffer.PoolArena
      StackMap stack: java.lang.Throwable
            aload 1
            monitorexit
         4: athrow
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lio/netty/buffer/PoolSubpage<TT;>;
      Exception table:
        from    to  target  type
           1     2       3  any
           3     4       3  any

  public int elementSize();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // io.netty.buffer.PoolSubpage this
         0: .line 244
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.chunk:Lio/netty/buffer/PoolChunk;
            getfield io.netty.buffer.PoolChunk.arena:Lio/netty/buffer/PoolArena;
            dup
            astore 1
            monitorenter
         1: .line 245
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.elemSize:I
            aload 1
            monitorexit
         2: ireturn
         3: .line 244
      StackMap locals: io.netty.buffer.PoolSubpage io.netty.buffer.PoolArena
      StackMap stack: java.lang.Throwable
            aload 1
            monitorexit
         4: athrow
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lio/netty/buffer/PoolSubpage<TT;>;
      Exception table:
        from    to  target  type
           1     2       3  any
           3     4       3  any

  public int pageSize();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.buffer.PoolSubpage this
         0: .line 251
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.pageSize:I
            ireturn
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/buffer/PoolSubpage<TT;>;

  void destroy();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.buffer.PoolSubpage this
         0: .line 255
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.chunk:Lio/netty/buffer/PoolChunk;
            ifnull 2
         1: .line 256
            aload 0 /* this */
            getfield io.netty.buffer.PoolSubpage.chunk:Lio/netty/buffer/PoolChunk;
            invokevirtual io.netty.buffer.PoolChunk.destroy:()V
         2: .line 258
      StackMap locals:
      StackMap stack:
            return
        end local 0 // io.netty.buffer.PoolSubpage this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lio/netty/buffer/PoolSubpage<TT;>;
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;Lio/netty/buffer/PoolSubpageMetric;
SourceFile: "PoolSubpage.java"