io.undertow/undertow-core/2.0.9.Final : io/undertow/server/DirectByteBufferDeallocator.class

DirectByteBufferDeallocator
http://www.jboss.org/undertow-parent/undertow-core: Undertow (JBoss by Red Hat)
Apache License Version 2.0
JBoss.org Community (JBoss.org)
public final class io.undertow.server.DirectByteBufferDeallocator
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: io.undertow.server.DirectByteBufferDeallocator
  super_class: java.lang.Object
{
  private static final boolean SUPPORTED;
    descriptor: Z
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

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

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

  private static final sun.misc.Unsafe UNSAFE;
    descriptor: Lsun/misc/Unsafe;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=6, locals=7, args_size=0
         0: .line 24
            ldc "java.specification.version"
            invokestatic java.lang.System.getProperty:(Ljava/lang/String;)Ljava/lang/String;
            astore 0 /* versionString */
        start local 0 // java.lang.String versionString
         1: .line 25
            aload 0 /* versionString */
            ldc "1."
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifeq 3
         2: .line 26
            aload 0 /* versionString */
            iconst_2
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            astore 0 /* versionString */
         3: .line 28
      StackMap locals: java.lang.String
      StackMap stack:
            aload 0 /* versionString */
            invokestatic java.lang.Integer.parseInt:(Ljava/lang/String;)I
            istore 1 /* version */
        start local 1 // int version
         4: .line 30
            aconst_null
            astore 2 /* tmpCleaner */
        start local 2 // java.lang.reflect.Method tmpCleaner
         5: .line 31
            aconst_null
            astore 3 /* tmpCleanerClean */
        start local 3 // java.lang.reflect.Method tmpCleanerClean
         6: .line 33
            aconst_null
            astore 5 /* tmpUnsafe */
        start local 5 // sun.misc.Unsafe tmpUnsafe
         7: .line 34
            iload 1 /* version */
            bipush 9
            if_icmpge 18
         8: .line 36
            ldc "java.nio.DirectByteBuffer"
            invokestatic java.lang.Class.forName:(Ljava/lang/String;)Ljava/lang/Class;
            ldc "cleaner"
            iconst_0
            anewarray java.lang.Class
            invokevirtual java.lang.Class.getMethod:(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
            astore 2 /* tmpCleaner */
         9: .line 37
            aload 2 /* tmpCleaner */
            iconst_1
            invokevirtual java.lang.reflect.Method.setAccessible:(Z)V
        10: .line 38
            ldc "sun.misc.Cleaner"
            invokestatic java.lang.Class.forName:(Ljava/lang/String;)Ljava/lang/Class;
            ldc "clean"
            iconst_0
            anewarray java.lang.Class
            invokevirtual java.lang.Class.getMethod:(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
            astore 3 /* tmpCleanerClean */
        11: .line 39
            aload 3 /* tmpCleanerClean */
            iconst_1
            invokevirtual java.lang.reflect.Method.setAccessible:(Z)V
        12: .line 40
            iconst_1
            istore 4 /* supported */
        start local 4 // boolean supported
        13: .line 41
            goto 26
        end local 4 // boolean supported
      StackMap locals: java.lang.String int java.lang.reflect.Method java.lang.reflect.Method top sun.misc.Unsafe
      StackMap stack: java.lang.Throwable
        14: astore 6 /* t */
        start local 6 // java.lang.Throwable t
        15: .line 42
            getstatic io.undertow.UndertowLogger.ROOT_LOGGER:Lio/undertow/UndertowLogger;
            aload 6 /* t */
            invokeinterface io.undertow.UndertowLogger.directBufferDeallocatorInitializationFailed:(Ljava/lang/Throwable;)V
        16: .line 43
            iconst_0
            istore 4 /* supported */
        end local 6 // java.lang.Throwable t
        start local 4 // boolean supported
        17: .line 45
            goto 26
        end local 4 // boolean supported
        18: .line 46
      StackMap locals:
      StackMap stack:
            invokestatic io.undertow.server.DirectByteBufferDeallocator.getUnsafe:()Lsun/misc/Unsafe;
            astore 5 /* tmpUnsafe */
        19: .line 48
            aload 5 /* tmpUnsafe */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            ldc "invokeCleaner"
            iconst_1
            anewarray java.lang.Class
            dup
            iconst_0
            ldc Ljava/nio/ByteBuffer;
            aastore
            invokevirtual java.lang.Class.getDeclaredMethod:(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
            astore 3 /* tmpCleanerClean */
        20: .line 49
            aload 3 /* tmpCleanerClean */
            iconst_1
            invokevirtual java.lang.reflect.Method.setAccessible:(Z)V
        21: .line 50
            iconst_1
            istore 4 /* supported */
        start local 4 // boolean supported
        22: .line 51
            goto 26
        end local 4 // boolean supported
      StackMap locals:
      StackMap stack: java.lang.Throwable
        23: astore 6 /* t */
        start local 6 // java.lang.Throwable t
        24: .line 52
            getstatic io.undertow.UndertowLogger.ROOT_LOGGER:Lio/undertow/UndertowLogger;
            aload 6 /* t */
            invokeinterface io.undertow.UndertowLogger.directBufferDeallocatorInitializationFailed:(Ljava/lang/Throwable;)V
        25: .line 53
            iconst_0
            istore 4 /* supported */
        end local 6 // java.lang.Throwable t
        start local 4 // boolean supported
        26: .line 56
      StackMap locals: java.lang.String int java.lang.reflect.Method java.lang.reflect.Method int sun.misc.Unsafe
      StackMap stack:
            iload 4 /* supported */
            putstatic io.undertow.server.DirectByteBufferDeallocator.SUPPORTED:Z
        27: .line 57
            aload 2 /* tmpCleaner */
            putstatic io.undertow.server.DirectByteBufferDeallocator.cleaner:Ljava/lang/reflect/Method;
        28: .line 58
            aload 3 /* tmpCleanerClean */
            putstatic io.undertow.server.DirectByteBufferDeallocator.cleanerClean:Ljava/lang/reflect/Method;
        29: .line 59
            aload 5 /* tmpUnsafe */
            putstatic io.undertow.server.DirectByteBufferDeallocator.UNSAFE:Lsun/misc/Unsafe;
        end local 5 // sun.misc.Unsafe tmpUnsafe
        end local 4 // boolean supported
        end local 3 // java.lang.reflect.Method tmpCleanerClean
        end local 2 // java.lang.reflect.Method tmpCleaner
        end local 1 // int version
        end local 0 // java.lang.String versionString
        30: .line 61
            return
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            1   30     0    versionString  Ljava/lang/String;
            4   30     1          version  I
            5   30     2       tmpCleaner  Ljava/lang/reflect/Method;
            6   30     3  tmpCleanerClean  Ljava/lang/reflect/Method;
           13   14     4        supported  Z
           17   18     4        supported  Z
           22   23     4        supported  Z
           26   30     4        supported  Z
            7   30     5        tmpUnsafe  Lsun/misc/Unsafe;
           15   17     6                t  Ljava/lang/Throwable;
           24   26     6                t  Ljava/lang/Throwable;
      Exception table:
        from    to  target  type
           8    13      14  Class java.lang.Throwable
          19    22      23  Class java.lang.Throwable

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.undertow.server.DirectByteBufferDeallocator this
         0: .line 63
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 65
            return
        end local 0 // io.undertow.server.DirectByteBufferDeallocator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/undertow/server/DirectByteBufferDeallocator;

  public static void free(java.nio.ByteBuffer);
    descriptor: (Ljava/nio/ByteBuffer;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=6, locals=2, args_size=1
        start local 0 // java.nio.ByteBuffer buffer
         0: .line 74
            getstatic io.undertow.server.DirectByteBufferDeallocator.SUPPORTED:Z
            ifeq 9
            aload 0 /* buffer */
            ifnull 9
            aload 0 /* buffer */
            invokevirtual java.nio.ByteBuffer.isDirect:()Z
            ifeq 9
         1: .line 76
            getstatic io.undertow.server.DirectByteBufferDeallocator.UNSAFE:Lsun/misc/Unsafe;
            ifnull 4
         2: .line 78
            getstatic io.undertow.server.DirectByteBufferDeallocator.cleanerClean:Ljava/lang/reflect/Method;
            getstatic io.undertow.server.DirectByteBufferDeallocator.UNSAFE:Lsun/misc/Unsafe;
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            aload 0 /* buffer */
            aastore
            invokevirtual java.lang.reflect.Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            pop
         3: .line 79
            goto 9
         4: .line 80
      StackMap locals:
      StackMap stack:
            getstatic io.undertow.server.DirectByteBufferDeallocator.cleaner:Ljava/lang/reflect/Method;
            aload 0 /* buffer */
            iconst_0
            anewarray java.lang.Object
            invokevirtual java.lang.reflect.Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            astore 1 /* cleaner */
        start local 1 // java.lang.Object cleaner
         5: .line 81
            getstatic io.undertow.server.DirectByteBufferDeallocator.cleanerClean:Ljava/lang/reflect/Method;
            aload 1 /* cleaner */
            iconst_0
            anewarray java.lang.Object
            invokevirtual java.lang.reflect.Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
            pop
        end local 1 // java.lang.Object cleaner
         6: .line 83
            goto 9
      StackMap locals:
      StackMap stack: java.lang.Throwable
         7: astore 1 /* t */
        start local 1 // java.lang.Throwable t
         8: .line 84
            getstatic io.undertow.UndertowLogger.ROOT_LOGGER:Lio/undertow/UndertowLogger;
            aload 1 /* t */
            invokeinterface io.undertow.UndertowLogger.directBufferDeallocationFailed:(Ljava/lang/Throwable;)V
        end local 1 // java.lang.Throwable t
         9: .line 87
      StackMap locals:
      StackMap stack:
            return
        end local 0 // java.nio.ByteBuffer buffer
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   10     0   buffer  Ljava/nio/ByteBuffer;
            5    6     1  cleaner  Ljava/lang/Object;
            8    9     1        t  Ljava/lang/Throwable;
      Exception table:
        from    to  target  type
           1     6       7  Class java.lang.Throwable
    MethodParameters:
        Name  Flags
      buffer  

  private static sun.misc.Unsafe getUnsafe();
    descriptor: ()Lsun/misc/Unsafe;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 90
            invokestatic java.lang.System.getSecurityManager:()Ljava/lang/SecurityManager;
            ifnull 2
         1: .line 91
            new io.undertow.server.DirectByteBufferDeallocator$1
            dup
            invokespecial io.undertow.server.DirectByteBufferDeallocator$1.<init>:()V
            invokestatic java.security.AccessController.doPrivileged:(Ljava/security/PrivilegedAction;)Ljava/lang/Object;
            checkcast sun.misc.Unsafe
            areturn
         2: .line 97
      StackMap locals:
      StackMap stack:
            invokestatic io.undertow.server.DirectByteBufferDeallocator.getUnsafe0:()Lsun/misc/Unsafe;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private static sun.misc.Unsafe getUnsafe0();
    descriptor: ()Lsun/misc/Unsafe;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=1, args_size=0
         0: .line 102
            ldc Lsun/misc/Unsafe;
            ldc "theUnsafe"
            invokevirtual java.lang.Class.getDeclaredField:(Ljava/lang/String;)Ljava/lang/reflect/Field;
            astore 0 /* theUnsafe */
        start local 0 // java.lang.reflect.Field theUnsafe
         1: .line 103
            aload 0 /* theUnsafe */
            iconst_1
            invokevirtual java.lang.reflect.Field.setAccessible:(Z)V
         2: .line 104
            aload 0 /* theUnsafe */
            aconst_null
            invokevirtual java.lang.reflect.Field.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast sun.misc.Unsafe
         3: areturn
        end local 0 // java.lang.reflect.Field theUnsafe
         4: .line 105
      StackMap locals:
      StackMap stack: java.lang.Throwable
            astore 0 /* t */
        start local 0 // java.lang.Throwable t
         5: .line 106
            new java.lang.RuntimeException
            dup
            ldc "JDK did not allow accessing unsafe"
            aload 0 /* t */
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/String;Ljava/lang/Throwable;)V
            athrow
        end local 0 // java.lang.Throwable t
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            1    4     0  theUnsafe  Ljava/lang/reflect/Field;
            5    6     0          t  Ljava/lang/Throwable;
      Exception table:
        from    to  target  type
           0     3       4  Class java.lang.Throwable
}
SourceFile: "DirectByteBufferDeallocator.java"
NestMembers:
  io.undertow.server.DirectByteBufferDeallocator$1
InnerClasses:
  io.undertow.server.DirectByteBufferDeallocator$1
/

io.undertow/ undertow-core/ 2.0.9.Final/ io/undertow/server/DirectByteBufferDeallocator.class
