CacheUtil (LWJGL API)

java.lang.Object
- org.lwjgl.util.mapped.CacheUtil

```
public final class CacheUtil
extends java.lang.Object
```
This class provides utility methods for allocating cache-line-aligned NIO buffers. The CPU cache line size is detected using a micro-benchmark that exploits the performation degredation that occurs when different threads write to different locations of the same cache line. The detection should be reasonably robust on both the server and client VM, but there are a few system properties that can be used to tune it.

Author:

Spasi

Method Summary

Methods
Modifier and Type	Method and Description
`static java.nio.ByteBuffer`	`createByteBuffer(int size)` Construct a direct, native-ordered and cache-line-aligned bytebuffer with the specified size.
`static java.nio.CharBuffer`	`createCharBuffer(int size)` Construct a direct, native-ordered and cache-line-aligned charbuffer with the specified number of elements.
`static java.nio.DoubleBuffer`	`createDoubleBuffer(int size)` Construct a direct, native-ordered and cache-line-aligned doublebuffer with the specified number of elements.
`static java.nio.FloatBuffer`	`createFloatBuffer(int size)` Construct a direct, native-ordered and cache-line-aligned floatbuffer with the specified number of elements.
`static java.nio.IntBuffer`	`createIntBuffer(int size)` Construct a direct, native-ordered and cache-line-aligned intbuffer with the specified number of elements.
`static java.nio.LongBuffer`	`createLongBuffer(int size)` Construct a direct, native-ordered and cache-line-aligned longbuffer with the specified number of elements.
`static PointerBuffer`	`createPointerBuffer(int size)` Construct a cache-line-aligned PointerBuffer with the specified number of elements.
`static java.nio.ShortBuffer`	`createShortBuffer(int size)` Construct a direct, native-ordered and cache-line-aligned shortbuffer with the specified number of elements.
`static int`	`getCacheLineSize()` Returns the CPU cache line size, in number of bytes.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getCacheLineSize
```
public static int getCacheLineSize()
```
    Returns the CPU cache line size, in number of bytes.
    
    Returns:
    the cache line size
  - createByteBuffer
```
public static java.nio.ByteBuffer createByteBuffer(int size)
```
    Construct a direct, native-ordered and cache-line-aligned bytebuffer with the specified size.
    
    Parameters:
    size - The size, in bytes
    
    Returns:
    a ByteBuffer
  - createShortBuffer
```
public static java.nio.ShortBuffer createShortBuffer(int size)
```
    Construct a direct, native-ordered and cache-line-aligned shortbuffer with the specified number of elements.
    
    Parameters:
    size - The size, in shorts
    
    Returns:
    a ShortBuffer
  - createCharBuffer
```
public static java.nio.CharBuffer createCharBuffer(int size)
```
    Construct a direct, native-ordered and cache-line-aligned charbuffer with the specified number of elements.
    
    Parameters:
    size - The size, in chars
    
    Returns:
    an CharBuffer
  - createIntBuffer
```
public static java.nio.IntBuffer createIntBuffer(int size)
```
    Construct a direct, native-ordered and cache-line-aligned intbuffer with the specified number of elements.
    
    Parameters:
    size - The size, in ints
    
    Returns:
    an IntBuffer
  - createLongBuffer
```
public static java.nio.LongBuffer createLongBuffer(int size)
```
    Construct a direct, native-ordered and cache-line-aligned longbuffer with the specified number of elements.
    
    Parameters:
    size - The size, in longs
    
    Returns:
    an LongBuffer
  - createFloatBuffer
```
public static java.nio.FloatBuffer createFloatBuffer(int size)
```
    Construct a direct, native-ordered and cache-line-aligned floatbuffer with the specified number of elements.
    
    Parameters:
    size - The size, in floats
    
    Returns:
    a FloatBuffer
  - createDoubleBuffer
```
public static java.nio.DoubleBuffer createDoubleBuffer(int size)
```
    Construct a direct, native-ordered and cache-line-aligned doublebuffer with the specified number of elements.
    
    Parameters:
    size - The size, in floats
    
    Returns:
    a FloatBuffer
  - createPointerBuffer
```
public static PointerBuffer createPointerBuffer(int size)
```
    Construct a cache-line-aligned PointerBuffer with the specified number of elements.
    
    Parameters:
    size - The size, in memory addresses
    
    Returns:
    a PointerBuffer

Class CacheUtil

Method Summary

Methods inherited from class java.lang.Object

Method Detail

getCacheLineSize

createByteBuffer

createShortBuffer

createCharBuffer

createIntBuffer

createLongBuffer

createFloatBuffer

createDoubleBuffer

createPointerBuffer