* This [i]barrier action[/i] is useful * for updating shared-state before any of the parties continue
这是并发处理的第一种范式:共享状态的并发(Shared-State Concurrency)。 v4:share memory by communicating 前面的迭代不管怎么优化都跳脱不出同一种思路:Shared-state concurrency,或者说:communicate by share
Smart Pointers Using Box to Point to Data on the Heap Rc\<T\>, the Reference Counted Smart Pointer Shared-State
This barrier action is useful for updating shared-state before any of the parties continue.