diff options
Diffstat (limited to 'kamon-core/src/main/scala/kamon/util/TriemapAtomicGetOrElseUpdate.scala')
-rw-r--r-- | kamon-core/src/main/scala/kamon/util/TriemapAtomicGetOrElseUpdate.scala | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/kamon-core/src/main/scala/kamon/util/TriemapAtomicGetOrElseUpdate.scala b/kamon-core/src/main/scala/kamon/util/TriemapAtomicGetOrElseUpdate.scala index 5ad43c34..d1197a5a 100644 --- a/kamon-core/src/main/scala/kamon/util/TriemapAtomicGetOrElseUpdate.scala +++ b/kamon-core/src/main/scala/kamon/util/TriemapAtomicGetOrElseUpdate.scala @@ -24,10 +24,22 @@ object TriemapAtomicGetOrElseUpdate { * why this is necessary can be found at [[https://issues.scala-lang.org/browse/SI-7943]]. */ implicit class Syntax[K, V](val trieMap: TrieMap[K, V]) extends AnyVal { + def atomicGetOrElseUpdate(key: K, op: ⇒ V): V = + atomicGetOrElseUpdate(key, op, { v: V ⇒ Unit }) + + def atomicGetOrElseUpdate(key: K, op: ⇒ V, cleanup: V ⇒ Unit): V = trieMap.get(key) match { case Some(v) ⇒ v - case None ⇒ val d = op; trieMap.putIfAbsent(key, d).getOrElse(d) + case None ⇒ + val d = op + trieMap.putIfAbsent(key, d).map { oldValue ⇒ + // If there was an old value then `d` was never added + // and thus need to be cleanup. + cleanup(d) + oldValue + + } getOrElse (d) } } } |