com.android.volley.toolbox

Class PoolingByteArrayOutputStream

java.lang.Object

java.io.OutputStream

java.io.ByteArrayOutputStream

com.android.volley.toolbox.PoolingByteArrayOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

public class PoolingByteArrayOutputStream
extends java.io.ByteArrayOutputStream

A variation of ByteArrayOutputStream that uses a pool of byte[] buffers instead of always allocating them fresh, saving on heap churn.

Field Summary

Fields

Modifier and Type	Field and Description
private static int	DEFAULT_SIZE If the PoolingByteArrayOutputStream(ByteArrayPool) constructor is called, this is the default size to which the underlying byte array is initialized.
private ByteArrayPool	mPool

Fields inherited from class java.io.ByteArrayOutputStream

buf, count

Constructor Summary

Constructors

Constructor and Description
PoolingByteArrayOutputStream(ByteArrayPool pool) Constructs a new PoolingByteArrayOutputStream with a default size.
PoolingByteArrayOutputStream(ByteArrayPool pool, int size) Constructs a new ByteArrayOutputStream with a default size of size bytes.

Method Summary

Modifier and Type	Method and Description
void	close()
private void	expand(int i) Ensures there is enough space in the buffer for the given number of additional bytes.
void	finalize()
void	write(byte[] buffer, int offset, int len)
void	write(int oneByte)

Methods inherited from class java.io.ByteArrayOutputStream

reset, size, toByteArray, toString, toString, toString, writeTo

Methods inherited from class java.io.OutputStream

flush, write

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_SIZE

private static final int DEFAULT_SIZE

If the PoolingByteArrayOutputStream(ByteArrayPool) constructor is called, this is the default size to which the underlying byte array is initialized.

See Also:

Constant Field Values

mPool

private final ByteArrayPool mPool

Constructor Detail

PoolingByteArrayOutputStream

public PoolingByteArrayOutputStream(ByteArrayPool pool)

Constructs a new PoolingByteArrayOutputStream with a default size. If more bytes are written to this instance, the underlying byte array will expand.

PoolingByteArrayOutputStream

public PoolingByteArrayOutputStream(ByteArrayPool pool,
                                    int size)

Constructs a new ByteArrayOutputStream with a default size of size bytes. If more than size bytes are written to this instance, the underlying byte array will expand.

Parameters:

size - initial size for the underlying byte array. The value will be pinned to a default minimum size.

Method Detail

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.ByteArrayOutputStream

Throws:

java.io.IOException

finalize

public void finalize()

Overrides:

finalize in class java.lang.Object

expand

private void expand(int i)

Ensures there is enough space in the buffer for the given number of additional bytes.

write

public void write(byte[] buffer,
                  int offset,
                  int len)

Overrides:

write in class java.io.ByteArrayOutputStream

write

public void write(int oneByte)

Overrides:

write in class java.io.ByteArrayOutputStream