Package io.netty.util.internal

Internal-use-only utilities which is not allowed to be used outside Netty.

Interface Summary

Interface	Description
CleanableDirectBuffer	Encapsulates a direct ByteBuffer and its mechanism for immediate deallocation, if any.
Cleaner	Allows to free direct ByteBuffers.
LongCounter	Counter for long.
ObjectPool.Handle<T>	Handle for an pooled Object that will be used to notify the ObjectPool once it can reuse the pooled Object again.
ObjectPool.ObjectCreator<T>	Deprecated. For removal.
PriorityQueue<T>
PriorityQueueNode	Provides methods for DefaultPriorityQueue to maintain internal state.

Class Summary

Class	Description
AdaptiveCalculator	Calculate sizes in a adaptive way.
AppendableCharSequence
AtomicReferenceCountUpdater<T extends ReferenceCounted>
BoundedInputStream
ClassInitializerUtil	Utility which ensures that classes are loaded by the ClassLoader.
CleanerJava24Linker
CleanerJava24Linker.CleanableDirectBufferImpl
CleanerJava25	Provide a way to clean direct ByteBuffer instances on Java 24+, where we don't have Unsafe available, but we have memory segments.
CleanerJava25.CleanableDirectBufferImpl
CleanerJava6	Allows to free direct ByteBuffer by using Cleaner.
CleanerJava6.CleanableDirectBufferImpl
CleanerJava9	Provide a way to clean a ByteBuffer on Java9+.
CleanerJava9.CleanableDirectBufferImpl
ConcurrentSet<E>	Deprecated. For removal in Netty 4.2.
ConstantTimeUtils
DefaultPriorityQueue<T extends PriorityQueueNode>	A priority queue which uses natural ordering of elements.
DirectCleaner
DirectCleaner.CleanableDirectBufferImpl
EmptyArrays
EmptyPriorityQueue<T>
IntegerHolder	Deprecated. For removal in netty 4.2
InternalThreadLocalMap	The internal data structure that stores the thread-local variables for Netty and all FastThreadLocals.
LongAdderCounter	Deprecated. please use LongAdder instead.
LongLongHashMap
MacAddressUtil
MathUtil	Math utility methods.
NativeLibraryLoader	Helper class to load JNI resources.
NativeLibraryLoader.NoexecVolumeDetector
NativeLibraryUtil	A Utility to Call the System.load(String) or System.loadLibrary(String).
NoOpTypeParameterMatcher
ObjectCleaner	Deprecated. The object cleaner is deprecated for removal.
ObjectCleaner.AutomaticCleanerReference
ObjectPool<T>	Light-weight object pool.
ObjectPool.RecyclerObjectPool<T>	Deprecated.
ObjectUtil	A grab-bag of useful utility methods.
PendingWrite	Some pending write which should be picked up later.
PlatformDependent	Utility that detects various properties specific to the current runtime environment, such as Java version and the availability of the sun.misc.Unsafe object.
PlatformDependent.Mpsc
PlatformDependent0	The PlatformDependent operations which requires access to sun.misc.*.
PromiseNotificationUtil	Internal utilities to notify Promises.
ReadOnlyIterator<T>
RecyclableArrayList	A simple list which is recyclable.
RefCnt	Monomorphic reference counter implementation that always use the most efficient available atomic updater.
RefCnt.AtomicRefCnt
RefCnt.UnsafeRefCnt
RefCnt.VarHandleRefCnt
ReferenceCountUpdater<T extends ReferenceCounted>	Deprecated. Instead of extending this class, prefer instead to include a RefCnt field and delegate to that.
ReflectionUtil
ResourcesUtil	A utility class that provides various common operations and constants related to loading resources
SocketUtils	Provides socket operations with privileges enabled.
StringUtil	String utility class.
SWARUtil	Utility class for SWAR (SIMD within a register) operations.
SystemPropertyUtil	A collection of utility methods to retrieve and parse the values of the Java system properties.
ThreadExecutorMap	Allow to retrieve the EventExecutor for the calling Thread.
ThreadLocalRandom	Deprecated.
ThrowableUtil
TypeParameterMatcher
TypeParameterMatcher.ReflectiveMatcher
UnpaddedInternalThreadLocalMap	Deprecated. This class will be removed in the future.
UnsafeReferenceCountUpdater<T extends ReferenceCounted>
VarHandleFactory
VarHandleReferenceCountUpdater<T extends ReferenceCounted>

Enum Summary

Enum	Description
ReferenceCountUpdater.UpdaterType

Error Summary

Error	Description
OutOfDirectMemoryError	OutOfMemoryError that is throws if PlatformDependent.allocateDirect(int) can not allocate a new ByteBuffer due memory restrictions.

Annotation Types Summary

Annotation Type	Description
SuppressJava6Requirement	Deprecated.
SuppressJava8Requirement	Annotation to suppress the Java 8 source code requirement checks for a method.
UnstableApi	Indicates a public API that can change at any time (even in minor/bugfix releases).