Value Members
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def
!=
(arg0: AnyRef): Boolean
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def
!=
(arg0: Any): Boolean
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def
##
(): Int
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def
==
(arg0: AnyRef): Boolean
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def
==
(arg0: Any): Boolean
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def
asInstanceOf
[T0]
: T0
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def
clone
(): AnyRef
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def
eq
(arg0: AnyRef): Boolean
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def
equals
(arg0: Any): Boolean
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def
finalize
(): Unit
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def
getClass
(): java.lang.Class[_]
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def
hashCode
(): Int
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def
isInstanceOf
[T0]
: Boolean
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def
ne
(arg0: AnyRef): Boolean
-
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def
notify
(): Unit
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def
notifyAll
(): Unit
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def
synchronized
[T0]
(arg0: ⇒ T0): T0
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def
toString
(): String
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def
wait
(): Unit
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def
wait
(arg0: Long, arg1: Int): Unit
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def
wait
(arg0: Long): Unit
Inherited from AnyRef
Inherited from Any
System messages are handled specially: they form their own queue within each actor’s mailbox. This queue is encoded in the messages themselves to avoid extra allocations and overhead. The next pointer is a normal var, and it does not need to be volatile because in the enqueuing method its update is immediately succeeded by a volatile write and all reads happen after the volatile read in the dequeuing thread. Afterwards, the obtained list of system messages is handled in a single thread only and not ever passed around, hence no further synchronization is needed.
➡➡➡ NEVER SEND THE SAME SYSTEM MESSAGE OBJECT TO TWO ACTORS ⬅⬅⬅