https://github.com/Terracotta-OSS/offheap-store/: A library that offers data structures allocated off the java heap. 
class org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region
  super_class: java.lang.Object
{
  private org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region left;
    descriptor: Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
    flags: (0x0002) ACC_PRIVATE

  private org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region right;
    descriptor: Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
    flags: (0x0002) ACC_PRIVATE

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

  private long start;
    descriptor: J
    flags: (0x0002) ACC_PRIVATE

  private long end;
    descriptor: J
    flags: (0x0002) ACC_PRIVATE

  private long availableBitSet;
    descriptor: J
    flags: (0x0002) ACC_PRIVATE

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
         0: .line 351
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 352
            aload 0 /* this */
            lconst_1
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
         2: .line 353
            aload 0 /* this */
            lconst_0
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
         3: .line 354
            aload 0 /* this */
            iconst_0
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.level:I
         4: .line 355
            aload 0 /* this */
            aload 0 /* this */
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.left:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
         5: .line 356
            aload 0 /* this */
            aload 0 /* this */
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.right:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
         6: .line 357
            aload 0 /* this */
            lconst_0
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.availableBitSet:J
         7: .line 358
            return
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    8     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;

  void <init>(long);
    descriptor: (J)V
    flags: (0x0000) 
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
        start local 1 // long value
         0: .line 361
            aload 0 /* this */
            lload 1 /* value */
            lload 1 /* value */
            invokespecial org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.<init>:(JJ)V
         1: .line 362
            return
        end local 1 // long value
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            0    2     1  value  J
    MethodParameters:
       Name  Flags
      value  

  void <init>(long, long);
    descriptor: (JJ)V
    flags: (0x0000) 
    Code:
      stack=3, locals=5, args_size=3
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
        start local 1 // long start
        start local 3 // long end
         0: .line 367
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 368
            aload 0 /* this */
            lload 1 /* start */
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
         2: .line 369
            aload 0 /* this */
            lload 3 /* end */
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
         3: .line 370
            aload 0 /* this */
            getstatic org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator.NULL_NODE:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.left:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
         4: .line 371
            aload 0 /* this */
            getstatic org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator.NULL_NODE:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.right:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
         5: .line 372
            aload 0 /* this */
            iconst_1
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.level:I
         6: .line 373
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.updateAvailable:()V
         7: .line 374
            return
        end local 3 // long end
        end local 1 // long start
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    8     0   this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            0    8     1  start  J
            0    8     3    end  J
    MethodParameters:
       Name  Flags
      start  
      end    

  void <init>(org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region);
    descriptor: (Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;)V
    flags: (0x0000) 
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
        start local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region r
         0: .line 382
            aload 0 /* this */
            aload 1 /* r */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:()J
            aload 1 /* r */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:()J
            invokespecial org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.<init>:(JJ)V
         1: .line 383
            return
        end local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region r
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            0    2     1     r  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
    MethodParameters:
      Name  Flags
      r     

  long available();
    descriptor: ()J
    flags: (0x0000) 
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
         0: .line 386
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.left:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            getstatic org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator.NULL_NODE:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            if_acmpne 2
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.right:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            getstatic org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator.NULL_NODE:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            if_acmpne 2
         1: .line 387
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.availableHere:()J
            lreturn
         2: .line 389
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.availableBitSet:J
            lreturn
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;

  private void updateAvailable();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
         0: .line 394
            aload 0 /* this */
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.availableHere:()J
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.left:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.available:()J
            lor
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.right:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.available:()J
            lor
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.availableBitSet:J
         1: .line 395
            return
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;

  long availableHere();
    descriptor: ()J
    flags: (0x0000) 
    Code:
      stack=6, locals=10, args_size=1
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
         0: .line 398
            lconst_0
            lstore 1 /* bits */
        start local 1 // long bits
         1: .line 400
            iconst_0
            istore 3 /* i */
        start local 3 // int i
         2: goto 9
         3: .line 401
      StackMap locals: long int
      StackMap stack:
            lconst_1
            iload 3 /* i */
            lshl
            lstore 4 /* size */
        start local 4 // long size
         4: .line 402
            lload 4 /* size */
            lconst_1
            lsub
            lstore 6 /* mask */
        start local 6 // long mask
         5: .line 404
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            lload 6 /* mask */
            ladd
            lload 6 /* mask */
            ldc -1
            lxor
            land
            lstore 8 /* a */
        start local 8 // long a
         6: .line 406
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            lload 8 /* a */
            lsub
            lload 4 /* size */
            lconst_1
            lsub
            lcmp
            iflt 8
         7: .line 407
            lload 1 /* bits */
            lload 4 /* size */
            lor
            lstore 1 /* bits */
        end local 8 // long a
        end local 6 // long mask
        end local 4 // long size
         8: .line 400
      StackMap locals:
      StackMap stack:
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
         9: iload 3 /* i */
            bipush 63
            if_icmplt 3
        end local 3 // int i
        10: .line 410
            lload 1 /* bits */
            lreturn
        end local 1 // long bits
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   11     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            1   11     1  bits  J
            2   10     3     i  I
            4    8     4  size  J
            5    8     6  mask  J
            6    8     8     a  J

  void left(org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region);
    descriptor: (Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
        start local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region l
         0: .line 414
            aload 0 /* this */
            aload 1 /* l */
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.left:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
         1: .line 415
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.updateAvailable:()V
         2: .line 416
            return
        end local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region l
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            0    3     1     l  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
    MethodParameters:
      Name  Flags
      l     

  void right(org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region);
    descriptor: (Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
        start local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region r
         0: .line 419
            aload 0 /* this */
            aload 1 /* r */
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.right:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
         1: .line 420
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.updateAvailable:()V
         2: .line 421
            return
        end local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region r
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            0    3     1     r  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
    MethodParameters:
      Name  Flags
      r     

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
         0: .line 428
            aload 0 /* this */
            getstatic org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator.NULL_NODE:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            if_acmpne 2
         1: .line 429
            ldc "EMPTY"
            areturn
         2: .line 431
      StackMap locals:
      StackMap stack:
            new java.lang.StringBuilder
            dup
            ldc "Range("
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            invokevirtual java.lang.StringBuilder.append:(J)Ljava/lang/StringBuilder;
            ldc ","
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            invokevirtual java.lang.StringBuilder.append:(J)Ljava/lang/StringBuilder;
            ldc ")"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc " available:"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.availableHere:()J
            invokestatic java.lang.Long.toBinaryString:(J)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;

  private java.lang.String dump();
    descriptor: ()Ljava/lang/String;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
         0: .line 436
            ldc ""
            astore 1 /* ds */
        start local 1 // java.lang.String ds
         1: .line 437
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.left:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            getstatic org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator.NULL_NODE:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            if_acmpeq 5
         2: .line 438
            new java.lang.StringBuilder
            dup
            ldc "("
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.left:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.dump:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 1 /* ds */
         3: .line 439
            new java.lang.StringBuilder
            dup
            aload 1 /* ds */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " <= "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* this */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 1 /* ds */
         4: .line 440
            goto 6
         5: .line 441
      StackMap locals: java.lang.String
      StackMap stack:
            new java.lang.StringBuilder
            dup
            aload 1 /* ds */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc "("
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* this */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 1 /* ds */
         6: .line 443
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.right:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            getstatic org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator.NULL_NODE:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            if_acmpeq 9
         7: .line 444
            new java.lang.StringBuilder
            dup
            aload 1 /* ds */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " => "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.right:Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.dump:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc ")"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 1 /* ds */
         8: .line 445
            goto 10
         9: .line 446
      StackMap locals:
      StackMap stack:
            new java.lang.StringBuilder
            dup
            aload 1 /* ds */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc ")"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 1 /* ds */
        10: .line 448
      StackMap locals:
      StackMap stack:
            aload 1 /* ds */
            areturn
        end local 1 // java.lang.String ds
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   11     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            1   11     1    ds  Ljava/lang/String;

  public long size();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
         0: .line 456
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.isNull:()Z
            ifeq 1
            lconst_0
            goto 2
      StackMap locals:
      StackMap stack:
         1: aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            lsub
            lconst_1
            ladd
      StackMap locals:
      StackMap stack: long
         2: lreturn
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;

  public boolean isNull();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
         0: .line 460
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            lcmp
            ifle 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;

  public org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region remove(org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region);
    descriptor: (Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;)Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=3, args_size=2
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
        start local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region r
         0: .line 464
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            lcmp
            iflt 1
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            lcmp
            ifle 2
         1: .line 465
      StackMap locals:
      StackMap stack:
            new java.lang.AssertionError
            dup
            new java.lang.StringBuilder
            dup
            ldc "Ranges : Illegal value passed to remove : "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            ldc " remove called for : "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 1 /* r */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
         2: .line 467
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            lcmp
            ifne 6
         3: .line 468
            aload 0 /* this */
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            lconst_1
            ladd
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
         4: .line 469
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.updateAvailable:()V
         5: .line 470
            aconst_null
            areturn
         6: .line 471
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            lcmp
            ifne 10
         7: .line 472
            aload 0 /* this */
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            lconst_1
            lsub
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
         8: .line 473
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.updateAvailable:()V
         9: .line 474
            aconst_null
            areturn
        10: .line 476
      StackMap locals:
      StackMap stack:
            new org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region
            dup
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            lconst_1
            ladd
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            invokespecial org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.<init>:(JJ)V
            astore 2 /* newRegion */
        start local 2 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region newRegion
        11: .line 477
            aload 0 /* this */
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            lconst_1
            lsub
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
        12: .line 478
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.updateAvailable:()V
        13: .line 479
            aload 2 /* newRegion */
            areturn
        end local 2 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region newRegion
        end local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region r
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   14     0       this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            0   14     1          r  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
           11   14     2  newRegion  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
    MethodParameters:
      Name  Flags
      r     

  public void merge(org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region);
    descriptor: (Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=2, args_size=2
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
        start local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region r
         0: .line 489
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            lconst_1
            ladd
            lcmp
            ifne 3
         1: .line 490
            aload 0 /* this */
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
         2: .line 491
            goto 7
      StackMap locals:
      StackMap stack:
         3: aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            lconst_1
            lsub
            lcmp
            ifne 6
         4: .line 492
            aload 0 /* this */
            aload 1 /* r */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
         5: .line 493
            goto 7
         6: .line 494
      StackMap locals:
      StackMap stack:
            new java.lang.AssertionError
            dup
            new java.lang.StringBuilder
            dup
            ldc "Ranges : Merge called on non contiguous values : [this]:"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            ldc " and "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 1 /* r */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
         7: .line 496
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.updateAvailable:()V
         8: .line 497
            return
        end local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region r
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    9     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            0    9     1     r  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
    MethodParameters:
      Name  Flags
      r     

  public int orderRelativeTo(org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region);
    descriptor: (Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;)I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
        start local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region other
         0: .line 503
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            aload 1 /* other */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            lcmp
            ifge 2
         1: .line 504
            iconst_m1
            ireturn
         2: .line 505
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            aload 1 /* other */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            lcmp
            ifle 4
         3: .line 506
            iconst_1
            ireturn
         4: .line 508
      StackMap locals:
      StackMap stack:
            iconst_0
            ireturn
        end local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region other
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    5     0   this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            0    5     1  other  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
    MethodParameters:
       Name  Flags
      other  

  private void swap(org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region);
    descriptor: (Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=4, args_size=2
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
        start local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region other
         0: .line 513
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            lstore 2 /* temp */
        start local 2 // long temp
         1: .line 514
            aload 0 /* this */
            aload 1 /* other */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
         2: .line 515
            aload 1 /* other */
            lload 2 /* temp */
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
         3: .line 516
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            lstore 2 /* temp */
         4: .line 517
            aload 0 /* this */
            aload 1 /* other */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
         5: .line 518
            aload 1 /* other */
            lload 2 /* temp */
            putfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
         6: .line 519
            aload 0 /* this */
            invokevirtual org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.updateAvailable:()V
         7: .line 520
            return
        end local 2 // long temp
        end local 1 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region other
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    8     0   this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            0    8     1  other  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
            1    8     2   temp  J
    MethodParameters:
       Name  Flags
      other  

  public long start();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
         0: .line 526
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.start:J
            lreturn
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;

  public long end();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
         0: .line 530
            aload 0 /* this */
            getfield org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region.end:J
            lreturn
        end local 0 // org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/terracotta/offheapstore/disk/paging/PowerOfTwoFileAllocator$Region;
}
SourceFile: "PowerOfTwoFileAllocator.java"
NestHost: org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator
InnerClasses:
  Region = org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator$Region of org.terracotta.offheapstore.disk.paging.PowerOfTwoFileAllocator