ios - @synchronized 是什么意思

Question

我遇到了这个代码：

       @synchronized (self.messageQueue) {
        [self.messageQueue insertObject:messageDictionaryRepresentation atIndex:0];
    }

我想请教这个语法（@synchronized）的用途是什么？谢谢。

Answer 1

See Synchronization. You find that is "a convenient way to create mutex locks on the fly in Objective-C code". a related question is What does @synchronized() do?.