Package com.fastasyncworldedit.bukkit.adapter

Class NMSAdapter

java.lang.Object

com.fastasyncworldedit.bukkit.adapter.NMSAdapter

All Implemented Interfaces:

FAWEPlatformAdapterImpl

public class NMSAdapter
extends Object
implements FAWEPlatformAdapterImpl

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	NMSAdapter.ChunkSendLock
static final class	NMSAdapter.StampLockHolder

Constructor Summary

Constructors

Constructor	Description
NMSAdapter()

Method Summary

Modifier and Type	Method	Description
protected static void	beginChunkPacketSend(String worldName, IntPair pair, NMSAdapter.StampLockHolder stampedLock)	Called before sending a chunk packet, filling the given stamp and stampedLock arrays' zeroth indices if the chunk packet send should go ahead.
static int	createPalette(int[] blockToPalette, int[] paletteToBlock, int[] blocksCopy, char[] set, CachedBukkitAdapter adapter)
static int	createPalette(int layer, int[] blockToPalette, int[] paletteToBlock, int[] blocksCopy, IntFunction<char[]> get, char[] set, CachedBukkitAdapter adapter)
protected static void	endChunkPacketSend(String worldName, IntPair pair, NMSAdapter.StampLockHolder lockHolder)	Releases the read lock acquired when sending a chunk packet for a chunk
void	sendChunk(IChunkGet chunk, int mask, boolean lighting)
protected static <LevelChunkSection> boolean	setSectionAtomic(String worldName, IntPair pair, LevelChunkSection[] sections, LevelChunkSection expected, LevelChunkSection value, int layer)	Atomically set the given chunk section to the chunk section array stored in the chunk, given the expected existing chunk section instance at the given layer position.

Methods inherited from class java.lang.Object

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

Constructor Details

NMSAdapter

public NMSAdapter()

Method Details

createPalette

public static int createPalette(int[] blockToPalette,
 int[] paletteToBlock,
 int[] blocksCopy,
 char[] set,
 CachedBukkitAdapter adapter)

createPalette

public static int createPalette(int layer,
 int[] blockToPalette,
 int[] paletteToBlock,
 int[] blocksCopy,
 IntFunction<char[]> get,
 char[] set,
 CachedBukkitAdapter adapter)

sendChunk

public void sendChunk(IChunkGet chunk,
 int mask,
 boolean lighting)

Specified by:

sendChunk in interface FAWEPlatformAdapterImpl

setSectionAtomic

protected static <LevelChunkSection> boolean setSectionAtomic(String worldName,
 IntPair pair,
 LevelChunkSection[] sections,
 LevelChunkSection expected,
 LevelChunkSection value,
 int layer)

Atomically set the given chunk section to the chunk section array stored in the chunk, given the expected existing chunk section instance at the given layer position.

Acquires a (FAWE-implemented only) write-lock on the chunk packet lock, waiting if required before writing, then freeing the lock. Also sets a boolean to indicate a write is waiting and therefore reads should not occur.

Utilises ConcurrentHashMap#compute for easy synchronisation for all of the above. Only tryWriteLock is used in blocks synchronised using ConcurrentHashMap methods.

Since:

2.12.0

beginChunkPacketSend

protected static void beginChunkPacketSend(String worldName,
 IntPair pair,
 NMSAdapter.StampLockHolder stampedLock)

Called before sending a chunk packet, filling the given stamp and stampedLock arrays' zeroth indices if the chunk packet send should go ahead.

Chunk packets should be sent if both of the following are met: - There is no more than one current packet send ongoing - There is no chunk section "write" waiting or ongoing, which are determined by the number of readers currently locking the StampedLock (i.e. the number of sends), if the stamped lock is currently write-locked and if the boolean for waiting write is true.

Utilises ConcurrentHashMap#compute for easy synchronisation

Since:

2.12.0

endChunkPacketSend

protected static void endChunkPacketSend(String worldName,
 IntPair pair,
 NMSAdapter.StampLockHolder lockHolder)

Releases the read lock acquired when sending a chunk packet for a chunk

Since:

2.12.0