Base trait of all atomic references, no matter the type.
Represents an Atomic reference holding a number, providing helpers for easily incrementing and decrementing it.
For applying padding to atomic references, in order to reduce cache contention.
A small toolkit of classes that support compare-and-swap semantics for safe mutation of variables.
On top of the JVM, this means dealing with lock-free thread-safe programming. Also works on top of Javascript, with Scala.js, for API compatibility purposes and because it's a useful way to box a value.
The backbone of Atomic references is this method:
This method atomically sets a variable to the
update
value if it currently holds theexpect
value, reportingtrue
on success orfalse
on failure. The classes in this package also contain methods to get and unconditionally set values.Building a reference is easy with the provided constructor, which will automatically return the most specific type needed (in the following sample, that's an
AtomicDouble
, inheriting fromAtomicNumber[T]
):These also provide useful helpers for atomically mutating of values (i.e.
transform
,transformAndGet
,getAndTransform
, etc...) or of numbers of any kind (incrementAndGet
,getAndAdd
, etc...).