org.apache.tomcat.jni
Class Buffer

java.lang.Object
  org.apache.tomcat.jni.Buffer

public class Buffer
extends java.lang.Object

Buffer

Author:

Mladen Turk

Buffer

public Buffer()

malloc

public static java.nio.ByteBuffer malloc(int size)

Allocate a new ByteBuffer from memory

Parameters:

size - The amount of memory to allocate

Returns:

The ByteBuffer with allocated memory

calloc

public static java.nio.ByteBuffer calloc(int num,
                                         int size)

Allocate a new ByteBuffer from memory and set all of the memory to 0

Parameters:

num - Number of elements.

size - Length in bytes of each element.

Returns:

The ByteBuffer with allocated memory

palloc

public static java.nio.ByteBuffer palloc(long p,
                                         int size)

Allocate a new ByteBuffer from a pool

Parameters:

p - The pool to allocate from

size - The amount of memory to allocate

Returns:

The ByteBuffer with allocated memory

pcalloc

public static java.nio.ByteBuffer pcalloc(long p,
                                          int size)

Allocate a new ByteBuffer from a pool and set all of the memory to 0

Parameters:

p - The pool to allocate from

size - The amount of memory to allocate

Returns:

The ByteBuffer with allocated memory

create

public static java.nio.ByteBuffer create(long mem,
                                         int size)

Allocate a new ByteBuffer from already allocated memory.
Allocated memory must be provided from call to the Stdlib.alloc or Stdlib.calloc methods.

Parameters:

mem - The memory to use

size - The amount of memory to use

Returns:

The ByteBuffer with attached memory

free

public static void free(java.nio.ByteBuffer buf)

Deallocates or frees a memory block used by ByteBuffer
Warning : Call this method only on ByteBuffers that were created by calling Buffer.alloc or Buffer.calloc.

Parameters:

buf - Previously allocated ByteBuffer to be freed.

address

public static long address(java.nio.ByteBuffer buf)

Returns the memory address of the ByteBuffer.

Parameters:

buf - Previously allocated ByteBuffer.

size

public static long size(java.nio.ByteBuffer buf)

Returns the allocated memory size of the ByteBuffer.

Parameters:

buf - Previously allocated ByteBuffer.