Tune load factor for more efficient parsing of java.time.ZoneId and java.time.ZonedDateTime values with JVMs and Scala Native

plokhotnyuk · plokhotnyuk · commit 401a15d0fbda · 2026-06-18T10:05:56.000+02:00
diff --git a/jsoniter-scala-core/js/src/main/scala/com/github/plokhotnyuk/jsoniter_scala/core/JsonReader.scala b/jsoniter-scala-core/js/src/main/scala/com/github/plokhotnyuk/jsoniter_scala/core/JsonReader.scala
@@ -4482,7 +4482,7 @@ object JsonReader {
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
   )
   private final val zoneOffsets: Array[ZoneOffset] = new Array(145)
-  private final val zoneIds: ConcurrentHashMap[Key, ZoneId] = new ConcurrentHashMap(256)
+  private final val zoneIds: ConcurrentHashMap[Key, ZoneId] = new ConcurrentHashMap(256, 0.5f)
   private final val hexDigits: Array[Char] =
     Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f')
   /* Use the following code to generate `dumpBorder` in Scala REPL:
diff --git a/jsoniter-scala-core/jvm-native/src/main/scala/com/github/plokhotnyuk/jsoniter_scala/core/JsonReader.scala b/jsoniter-scala-core/jvm-native/src/main/scala/com/github/plokhotnyuk/jsoniter_scala/core/JsonReader.scala
@@ -5113,7 +5113,7 @@ object JsonReader {
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
   )
   private final val zoneOffsets: Array[ZoneOffset] = new Array(145)
-  private final val zoneIds: ConcurrentHashMap[Key, ZoneId] = new ConcurrentHashMap(256)
+  private final val zoneIds: ConcurrentHashMap[Key, ZoneId] = new ConcurrentHashMap(256, 0.5f)
   private final val hexDigits: Array[Char] =
     Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f')
   /* Use the following code to generate `dumpBorder` in Scala REPL:

Original file line number	Diff line number	Diff line change
`@@ -4482,7 +4482,7 @@ object JsonReader {`
`4482`	`4482`	`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1`
`4483`	`4483`	`)`
`4484`	`4484`	`private final val zoneOffsets: Array[ZoneOffset] = new Array(145)`
`4485`		`- private final val zoneIds: ConcurrentHashMap[Key, ZoneId] = new ConcurrentHashMap(256)`
	`4485`	`+ private final val zoneIds: ConcurrentHashMap[Key, ZoneId] = new ConcurrentHashMap(256, 0.5f)`
`4486`	`4486`	`private final val hexDigits: Array[Char] =`
`4487`	`4487`	`Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f')`
`4488`	`4488`	/* Use the following code to generate `dumpBorder` in Scala REPL:
Original file line number	Diff line number	Diff line change
`@@ -5113,7 +5113,7 @@ object JsonReader {`
`5113`	`5113`	`-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1`
`5114`	`5114`	`)`
`5115`	`5115`	`private final val zoneOffsets: Array[ZoneOffset] = new Array(145)`
`5116`		`- private final val zoneIds: ConcurrentHashMap[Key, ZoneId] = new ConcurrentHashMap(256)`
	`5116`	`+ private final val zoneIds: ConcurrentHashMap[Key, ZoneId] = new ConcurrentHashMap(256, 0.5f)`
`5117`	`5117`	`private final val hexDigits: Array[Char] =`
`5118`	`5118`	`Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f')`
`5119`	`5119`	/* Use the following code to generate `dumpBorder` in Scala REPL: