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Swift 派发机制 | PierceDark #9

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YunyueLin opened this issue May 22, 2018 · 0 comments
Open

Swift 派发机制 | PierceDark #9

YunyueLin opened this issue May 22, 2018 · 0 comments

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@YunyueLin
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https://yunyuelin.github.io/2018/05/22/Swift-%E6%B4%BE%E5%8F%91%E6%9C%BA%E5%88%B6/#more

此篇博客用来自我学习,来源戴铭大佬的这篇博客 Swift 派发机制派发目的是让 CPU 知道被调用的函数在哪里。Swift 语言是支持编译型语言的直接派发,函数表派发和消息机制派发三种派发方式的,下面分别对这三种派发方式说明下。 直接派发C++ 默认使用的是直接派发,加上 virtual修饰符可以改成函数表派发。直接派发是最快的,原因是调用指令会少,还可以通过编译器进行比如内联等方式的优化。缺

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