| Package | Description |
|---|---|
| org.apache.commons.lang3.concurrent |
Provides support classes for multi-threaded programming.
|
| Modifier and Type | Class and Description |
|---|---|
class |
AtomicInitializer<T>
A specialized implementation of the
ConcurrentInitializer interface
based on an AtomicReference variable. |
class |
AtomicSafeInitializer<T>
A specialized
ConcurrentInitializer implementation which is similar
to AtomicInitializer, but ensures that the AtomicSafeInitializer.initialize()
method is called only once. |
class |
BackgroundInitializer<T>
A class that allows complex initialization operations in a background task.
|
class |
CallableBackgroundInitializer<T>
A specialized
BackgroundInitializer implementation that wraps a
Callable object. |
class |
ConstantInitializer<T>
A very simple implementation of the
ConcurrentInitializer interface
which always returns the same object. |
class |
LazyInitializer<T>
This class provides a generic implementation of the lazy initialization
pattern.
|
class |
MultiBackgroundInitializer
A specialized
BackgroundInitializer implementation that can deal with
multiple background initialization tasks. |
| Modifier and Type | Method and Description |
|---|---|
static <K,V> V |
ConcurrentUtils.createIfAbsent(ConcurrentMap<K,V> map,
K key,
ConcurrentInitializer<V> init)
Checks if a concurrent map contains a key and creates a corresponding
value if not.
|
static <K,V> V |
ConcurrentUtils.createIfAbsentUnchecked(ConcurrentMap<K,V> map,
K key,
ConcurrentInitializer<V> init)
Checks if a concurrent map contains a key and creates a corresponding
value if not, suppressing checked exceptions.
|
static <T> T |
ConcurrentUtils.initialize(ConcurrentInitializer<T> initializer)
Invokes the specified
ConcurrentInitializer and returns the
object produced by the initializer. |
static <T> T |
ConcurrentUtils.initializeUnchecked(ConcurrentInitializer<T> initializer)
Invokes the specified
ConcurrentInitializer and transforms
occurring exceptions to runtime exceptions. |
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