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A comment on Pony: An actor-model, capabilities-secure, high-performance programming language. Parent comment

Re:Pony: An actor-model, capabilities-secure, high-performan... by adwn on Tuesday July 29, 2025 @07:05AM (#44721749)
> Sending a message between Actors can be just moving a pointer to a piece of shared memory.

No, you also need synchronization operations on the sending and the receiving end, even if you have a single sender and a single receiver. That's because message queues are implemented on top of shared memory – there's no way around this on general-purpose hardware.

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Re:Pony: An actor-model, capabilities-secure, high-performan... by RossBencina on Tuesday July 29, 2025 @10:34PM (#44730455)
Depends on your definition of synchronization operations. You certainly need memory fences, and possibly atomic operations. These may or may not have a performance cost.
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