Plasma object store threads

Hi! I am relatively new to using Ray, and I would like to ask whether the Plasma object store implementation used by Ray (serving requests from the clients) is single-threaded or multi-threaded. From what I see from the code, it must be single-threaded, can someone please confirm? Thank you!

I think @pcmoritz has best context about this question!

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Plasma store itself is single threaded, but the object creation (memcpy) is done in multi-threading.

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