io.airlift.slice

Class UnsafeSliceFactory

java.lang.Object

io.airlift.slice.UnsafeSliceFactory

public class UnsafeSliceFactory
extends Object

A slice factory for creating unsafe slices

Method Summary

Modifier and Type	Method and Description
static UnsafeSliceFactory	getInstance() Get a factory for creating "unsafe" slices that can reference arbitrary memory addresses.
Slice	newSlice(long address, int size) Creates a slice for directly a raw memory address.
Slice	newSlice(long address, int size, Object reference) Creates a slice for directly a raw memory address.
Slice	newSlice(Object base, long address, int size)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getInstance

public static UnsafeSliceFactory getInstance()

Get a factory for creating "unsafe" slices that can reference arbitrary memory addresses. If there is a security manager, its checkPermission method is called with a ReflectPermission("suppressAccessChecks") permission.

Returns:

an unsafe slice factory

newSlice

public Slice newSlice(long address,
                      int size)

Creates a slice for directly a raw memory address. This is inherently unsafe as it may be used to access arbitrary memory.

Parameters:

address - the raw memory address base

size - the size of the slice

Returns:

the unsafe slice

newSlice

public Slice newSlice(long address,
                      int size,
                      Object reference)

Creates a slice for directly a raw memory address. This is inherently unsafe as it may be used to access arbitrary memory. The slice will hold the specified object reference to prevent the garbage collector from freeing it while it is in use by the slice.

Parameters:

address - the raw memory address base

size - the size of the slice

reference - the object reference

Returns:

the unsafe slice

newSlice

public Slice newSlice(Object base,
                      long address,
                      int size)