public final class org.h2.util.MemoryUnmapper
minor version: 0
major version: 59
flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
this_class: org.h2.util.MemoryUnmapper
super_class: java.lang.Object
{
private static final boolean ENABLED;
descriptor: Z
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
private static final java.lang.Object UNSAFE;
descriptor: Ljava/lang/Object;
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
private static final java.lang.reflect.Method INVOKE_CLEANER;
descriptor: Ljava/lang/reflect/Method;
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
static void <clinit>();
descriptor: ()V
flags: (0x0008) ACC_STATIC
Code:
stack=6, locals=5, args_size=0
0: getstatic org.h2.engine.SysProperties.NIO_CLEANER_HACK:Z
istore 0
start local 0 1: aconst_null
astore 1
start local 1 2: aconst_null
astore 2
start local 2 3: iload 0
ifeq 15
4: ldc "sun.misc.Unsafe"
invokestatic java.lang.Class.forName:(Ljava/lang/String;)Ljava/lang/Class;
astore 3
start local 3 5: aload 3
ldc "theUnsafe"
invokevirtual java.lang.Class.getDeclaredField:(Ljava/lang/String;)Ljava/lang/reflect/Field;
astore 4
start local 4 6: aload 4
iconst_1
invokevirtual java.lang.reflect.Field.setAccessible:(Z)V
7: aload 4
aconst_null
invokevirtual java.lang.reflect.Field.get:(Ljava/lang/Object;)Ljava/lang/Object;
astore 1
8: aload 3
ldc "invokeCleaner"
iconst_1
anewarray java.lang.Class
dup
iconst_0
ldc Ljava/nio/ByteBuffer;
aastore
invokevirtual java.lang.Class.getMethod:(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;
astore 2
end local 4 end local 3 9: goto 15
StackMap locals: int java.lang.Object java.lang.reflect.Method
StackMap stack: java.lang.ReflectiveOperationException
10: pop
11: aconst_null
astore 1
goto 15
12: StackMap locals:
StackMap stack: java.lang.Throwable
pop
13: iconst_0
istore 0
14: aconst_null
astore 1
15: StackMap locals:
StackMap stack:
iload 0
putstatic org.h2.util.MemoryUnmapper.ENABLED:Z
16: aload 1
putstatic org.h2.util.MemoryUnmapper.UNSAFE:Ljava/lang/Object;
17: aload 2
putstatic org.h2.util.MemoryUnmapper.INVOKE_CLEANER:Ljava/lang/reflect/Method;
end local 2 end local 1 end local 0 18: return
LocalVariableTable:
Start End Slot Name Signature
1 18 0 enabled Z
2 18 1 unsafe Ljava/lang/Object;
3 18 2 invokeCleaner Ljava/lang/reflect/Method;
5 9 3 clazz Ljava/lang/Class<*>;
6 9 4 field Ljava/lang/reflect/Field;
Exception table:
from to target type
4 9 10 Class java.lang.ReflectiveOperationException
4 9 12 Class java.lang.Throwable
public static boolean unmap(java.nio.ByteBuffer);
descriptor: (Ljava/nio/ByteBuffer;)Z
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=6, locals=4, args_size=1
start local 0 0: getstatic org.h2.util.MemoryUnmapper.ENABLED:Z
ifne 2
1: iconst_0
ireturn
2: StackMap locals:
StackMap stack:
getstatic org.h2.util.MemoryUnmapper.INVOKE_CLEANER:Ljava/lang/reflect/Method;
ifnull 5
3: getstatic org.h2.util.MemoryUnmapper.INVOKE_CLEANER:Ljava/lang/reflect/Method;
getstatic org.h2.util.MemoryUnmapper.UNSAFE:Ljava/lang/Object;
iconst_1
anewarray java.lang.Object
dup
iconst_0
aload 0
aastore
invokevirtual java.lang.reflect.Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
pop
4: iconst_1
ireturn
5: StackMap locals:
StackMap stack:
aload 0
invokevirtual java.lang.Object.getClass:()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 1
start local 1 6: aload 1
iconst_1
invokevirtual java.lang.reflect.Method.setAccessible:(Z)V
7: aload 1
aload 0
iconst_0
anewarray java.lang.Object
invokevirtual java.lang.reflect.Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
astore 2
start local 2 8: aload 2
ifnull 11
9: aload 2
invokevirtual java.lang.Object.getClass:()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
start local 3 10: aload 3
aload 2
iconst_0
anewarray java.lang.Object
invokevirtual java.lang.reflect.Method.invoke:(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
pop
end local 3 11: StackMap locals: java.lang.reflect.Method java.lang.Object
StackMap stack:
iconst_1
ireturn
end local 2 end local 1 12: StackMap locals: java.nio.ByteBuffer
StackMap stack: java.lang.Throwable
pop
13: iconst_0
ireturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 14 0 buffer Ljava/nio/ByteBuffer;
6 12 1 cleanerMethod Ljava/lang/reflect/Method;
8 12 2 cleaner Ljava/lang/Object;
10 11 3 clearMethod Ljava/lang/reflect/Method;
Exception table:
from to target type
2 4 12 Class java.lang.Throwable
5 11 12 Class java.lang.Throwable
MethodParameters:
Name Flags
buffer
private void <init>();
descriptor: ()V
flags: (0x0002) ACC_PRIVATE
Code:
stack=1, locals=1, args_size=1
start local 0 0: aload 0
invokespecial java.lang.Object.<init>:()V
1: return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 2 0 this Lorg/h2/util/MemoryUnmapper;
}
SourceFile: "MemoryUnmapper.java"