A special variant of ThreadLocal that yields higher access performance when accessed from a ActorThread.
Internally, a ThreadLocal uses a constant index in an array, instead of using hash code and hash table, to look for a variable. Although seemingly very subtle, it yields slight performance advantage over using a hash table, and it is useful when accessed frequently.
To take advantage of this thread-local variable, your thread must be a ActorThread. By default, all actors and channel are running by ActorThread.
Sets the value to uninitialized for the specified thread local map. After this, any subsequent call to get() will trigger a new call to initialValue().
Sets the value to uninitialized for the specified thread local map. After this, any subsequent call to get() will trigger a new call to initialValue().