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Avoid BoxesRuntime indirection in LruBoundedCache key comparison (#31356)

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By restricting the key type of `LruBoundedCache` to `AnyRef`, we can
avoid the indirection through `BoxesRuntime`, we remove some overhead
and potentially unlock some JVM optimizations here.
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Jason Zaugg 2022-04-22 16:32:15 +10:00 • committed by GitHub
parent 146cc1af0f
commit 00c1da9944
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akka-remote/src/main/scala/akka/remote/artery/LruBoundedCache.scala
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@ -23,7 +23,7 @@ private[akka] case class CacheStatistics(entries: Int, maxProbeDistance: Int, av
* to kick out entires that are considered old. The implementation tries to keep the map close to full, only evicting * to kick out entires that are considered old. The implementation tries to keep the map close to full, only evicting
* old entries when needed. * old entries when needed.
*/ */
private[akka] abstract class LruBoundedCache[K: ClassTag, V <: AnyRef: ClassTag]( private[akka] abstract class LruBoundedCache[K <: AnyRef: ClassTag, V <: AnyRef: ClassTag](
capacity: Int, capacity: Int,
evictAgeThreshold: Int) { evictAgeThreshold: Int) {
require(capacity > 0, "Capacity must be larger than zero") require(capacity > 0, "Capacity must be larger than zero")