[erlang-questions] how is the underlying mechanism to send messages between processes running on multicore?

[LiYusheng]

Suppose there are three processes running on three cores. Process A and B are trying to send message to Process C. Is Process C's message queue locked for receiving messages? To my understand, suppose in Process A,
C ! {add,X}
then {add,X} is turned into binary, then lock and add to C's message queue, C will turn this binary into term then check the message .is this correct? and what will happen if some error occur inside the lock?
Thanks for reply.
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