Package io.netty.util

Utility classes used across multiple packages.

Interface Summary

Interface	Description
AsyncMapping<IN,OUT>
Attribute<T>	An attribute which allows to store a value reference.
AttributeMap	Holds Attributes which can be accessed via AttributeKey.
BooleanSupplier	Represents a supplier of boolean-valued results.
ByteProcessor	Provides a mechanism to iterate over a collection of bytes.
Constant<T extends Constant<T>>	A singleton which is safe to compare via the == operator.
HashingStrategy<T>	Abstraction for hash code generation and equality comparison.
IntSupplier	Represents a supplier of int-valued results.
Mapping<IN,OUT>	Maintains the mapping from the objects of one type to the objects of the other type.
Recycler.Handle<T>
ReferenceCounted	A reference-counted object that requires explicit deallocation.
ResourceLeak	Deprecated. please use ResourceLeakTracker as it may lead to false-positives.
ResourceLeakDetector.LeakListener
ResourceLeakHint	A hint object that provides human-readable message for easier resource leak tracking.
ResourceLeakTracker<T>
Timeout	A handle associated with a TimerTask that is returned by a Timer.
Timer	Schedules TimerTasks for one-time future execution in a background thread.
TimerTask	A task which is executed after the delay specified with Timer.newTimeout(TimerTask, long, TimeUnit).
UncheckedBooleanSupplier	Represents a supplier of boolean-valued results which doesn't throw any checked exceptions.

Class Summary

Class	Description
AbstractConstant<T extends AbstractConstant<T>>	Base implementation of Constant.
AbstractReferenceCounted	Abstract base class for classes wants to implement ReferenceCounted.
AsciiString	A string which has been encoded into a character encoding whose character always takes a single byte, similarly to ASCII.
AttributeKey<T>	Key which can be used to access Attribute out of the AttributeMap.
ByteProcessor.IndexNotOfProcessor	A ByteProcessor which finds the first appearance which is not of a specific byte.
ByteProcessor.IndexOfProcessor	A ByteProcessor which finds the first appearance of a specific byte.
CharsetUtil	A utility class that provides various common operations and constants related with Charset and its relevant classes.
ConstantPool<T extends Constant<T>>	A pool of Constants.
DefaultAttributeMap	Default AttributeMap implementation which not exibit any blocking behaviour on attribute lookup while using a copy-on-write approach on the modify path. Attributes lookup and remove exibit O(logn) time worst-case complexity, hence attribute::set(null) is to be preferred to remove.
DomainMappingBuilder<V>	Deprecated. Use DomainWildcardMappingBuilder instead.
DomainNameMapping<V>	Deprecated. Use DomainWildcardMappingBuilder}
DomainNameMappingBuilder<V>	Deprecated. Use DomainWildcardMappingBuilder
DomainWildcardMappingBuilder<V>	Builder that allows to build Mappings that support DNS wildcard matching.
HashedWheelTimer	A Timer optimized for approximated I/O timeout scheduling.
LeakPresenceDetector<T>	Alternative leak detector implementation for reliable and performant detection in tests.
LeakPresenceDetector.ResourceScope	A resource scope keeps track of the resources for a particular set of threads.
NettyRuntime	A utility class for wrapping calls to Runtime.
NetUtil	A class that holds a number of network-related constants.
Recycler<T>	Light-weight object pool based on a thread-local stack.
Recycler.EnhancedHandle<T>
ReferenceCountUtil	Collection of method to handle objects that may implement ReferenceCounted.
ResourceLeakDetector<T>
ResourceLeakDetectorFactory	This static factory should be used to load ResourceLeakDetectors as needed
ThreadDeathWatcher	Deprecated. will be removed in the next major release
Version	Retrieves the version information of available Netty artifacts.

Enum Summary

Enum	Description
ResourceLeakDetector.Level	Represents the level of resource leak detection.

Exception Summary

Exception	Description
IllegalReferenceCountException	An IllegalStateException which is raised when a user attempts to access a ReferenceCounted whose reference count has been decreased to 0 (and consequently freed).
ResourceLeakException	Deprecated. This class will be removed in the future version.

Error Summary

Error	Description
Signal	A special Error which is used to signal some state or request by throwing it.

Annotation Types Summary

Annotation Type	Description
SuppressForbidden	Annotation to suppress forbidden-apis errors inside a whole class, a method, or a field.