信息的概念通常与同步呼吁有关。 目标是C? 比如,当打电话者向被打电话的人发出信息,要求他们执行某种方法时,打电话者是否立即继续,或者在被打电话者完成所要求的方法之前是否被阻止?
这无疑被阻断。 由于这些电文实际上被翻译成了平原C。
[myObj myMethod];
......
objc_msgSend(myObj, @selector(myMethod));
暂时搁置。
However, some methods are implemented to be asynchronous. See -[NSTask launch], -[NSThread start], etc.
No, when you read "send a message" in objective-c you must think of it as calling a method. So, to send a message is to call a method, some are sync, some are async, you must check the docs to see that.
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