Class BpfMap

java.lang.Object

one.nio.os.bpf.Handle

one.nio.os.bpf.BpfObj

one.nio.os.bpf.BpfMap

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

BpfMap.SynchronizedBpfMap

public class BpfMap
extends BpfObj
implements Closeable

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) class	BpfMap.KeysIterator
private static class	BpfMap.SynchronizedBpfMap

Nested classes/interfaces inherited from class BpfObj

BpfObj.IdsIterator

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ARRAY_KEY_SIZE
static final int	CPUS
final int	flags
final int	keySize
final int	maxEntries
final int	totalValueSize
final MapType	type
final int	valueSize

Fields inherited from class BpfObj

id, MAX_NAME_LEN, name

Fields inherited from class Handle

fdUpdater

Constructor Summary

Constructors

Constructor	Description
BpfMap(MapType type, int id, String name, int keySize, int valueSize, int maxEntries, int flags, int fd)

Method Summary

Modifier and Type	Method	Description
static ByteBuffer	bytes(byte[] value)
static byte[]	bytes(int i)
static byte[]	bytes(long i)
private void	checkKeyLength(int length)
private void	checkTotalValueLength(int length)
byte[]	get(byte[] key)
boolean	get(byte[] key, byte[] result)
protected boolean	get(byte[] key, byte[] result, int flags)
static Iterable<Integer>	getAllIds()
static BpfMap	getByFd(int fd)
static BpfMap	getById(int id)
static BpfMap	getPinned(String path)
static IntBuffer	ints(byte[] value)
Iterable<byte[]>	keys()
static LongBuffer	longs(byte[] value)
static BpfMap	newMap(MapType type, int keySize, int valueSize, int maxEntries, String name, int flags)
static BpfMap	newMapOfMaps(MapType type, int keySize, int maxEntries, String name, int flags, BpfMap innerMap)
static BpfMap	newPerfEventArray(String name, int flags)
boolean	put(byte[] key, byte[] value)
protected boolean	put(byte[] key, byte[] value, int flags)
boolean	putIfAbsent(byte[] key, byte[] value)
boolean	putIfPresent(byte[] key, byte[] value)
boolean	remove(byte[] key)
private static int	roundUp(int valueSize)
BpfMap	synchronizedMap()

Methods inherited from class BpfObj

pin

Methods inherited from class Handle

close, fd

Methods inherited from class Object

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

Methods inherited from interface Closeable

close

Field Details

CPUS

public static final int CPUS

ARRAY_KEY_SIZE

public static final int ARRAY_KEY_SIZE

See Also:

• Constant Field Values

type

public final MapType type

keySize

public final int keySize

valueSize

public final int valueSize

totalValueSize

public final int totalValueSize

maxEntries

public final int maxEntries

flags

public final int flags

Constructor Details

BpfMap

BpfMap(MapType type,
 int id,
 String name,
 int keySize,
 int valueSize,
 int maxEntries,
 int flags,
 int fd)

Method Details

roundUp

private static int roundUp(int valueSize)

get

public boolean get(byte[] key,
 byte[] result)
            throws IOException

Throws:

IOException

get

protected boolean get(byte[] key,
 byte[] result,
 int flags)
               throws IOException

Throws:

IOException

get

public byte[] get(byte[] key)
           throws IOException

Throws:

IOException

put

public boolean put(byte[] key,
 byte[] value)
            throws IOException

Throws:

IOException

putIfAbsent

public boolean putIfAbsent(byte[] key,
 byte[] value)
                    throws IOException

Throws:

IOException

putIfPresent

public boolean putIfPresent(byte[] key,
 byte[] value)
                     throws IOException

Throws:

IOException

put

protected boolean put(byte[] key,
 byte[] value,
 int flags)
               throws IOException

Throws:

IOException

remove

public boolean remove(byte[] key)
               throws IOException

Throws:

IOException

keys

public Iterable<byte[]> keys()

synchronizedMap

public BpfMap synchronizedMap()

getPinned

public static BpfMap getPinned(String path)
                        throws IOException

Throws:

IOException

getById

public static BpfMap getById(int id)
                      throws IOException

Throws:

IOException

getByFd

public static BpfMap getByFd(int fd)
                      throws IOException

Throws:

IOException

newMap

public static BpfMap newMap(MapType type,
 int keySize,
 int valueSize,
 int maxEntries,
 String name,
 int flags)
                     throws IOException

Throws:

IOException

newMapOfMaps

public static BpfMap newMapOfMaps(MapType type,
 int keySize,
 int maxEntries,
 String name,
 int flags,
 BpfMap innerMap)
                           throws IOException

Throws:

IOException

newPerfEventArray

public static BpfMap newPerfEventArray(String name,
 int flags)
                                throws IOException

Throws:

IOException

checkKeyLength

private void checkKeyLength(int length)

checkTotalValueLength

private void checkTotalValueLength(int length)

getAllIds

public static Iterable<Integer> getAllIds()

bytes

public static byte[] bytes(int i)

bytes

public static byte[] bytes(long i)

bytes

public static ByteBuffer bytes(byte[] value)

ints

public static IntBuffer ints(byte[] value)

longs

public static LongBuffer longs(byte[] value)