作为c#工程师,什么是托管代码、⾮托管代码托管代码 (managed code)?


在C#编程中,托管代码(Managed Code)和非托管代码(Unmanaged Code)是两种主要的代码类型。 托管代码: 托管代码是由.NET运行环境负责管理的代码。在C#中,当你使用.NET类库或者.NET运行环境可以理解的其他语言编写的代码,就是托管代码。托管代码的好处是,它可以被垃圾回收器(Garbage Collector)自动管理,无需程序员手动释放资源。这也意味着,如果托管代码中存在内存泄漏,那往往是由于.NET运行环境的bug所导致的。托管代码通常比非托管代码更安全,因为它有防止指针操作和内存破坏的机制。 非托管代码: 非托管代码是直接运行在操作系统级别的代码,比如C或者C++编写的代码。这种类型的代码并不受.NET运行环境的直接管理,因此需要程序员手动管理内存和资源。这就意味着,如果非托管代码中存在内存泄漏,那往往是由于程序员在管理内存时的错误所导致的。非托管代码的另一个特点是,它可以直接操作硬件资源,比如内存和文件系统,这使得它比托管代码有更高的性能。这也意味着它更容易受到安全问题的影响,比如缓冲区溢出和指针操作。 在C#编程中,你通常会使用托管代码,因为.NET运行环境提供了许多方便的功能,比如垃圾回收和类型安全。有时候你也会需要使用非托管代码,比如在使用某些特定的系统API或者进行高性能计算时。在这种情况下,你可以通过P/Invoke(Platform Invocation Services)或者C++/CLI来调用非托管代码。 [2023-11-09 17:48:35 | AI写代码神器 | 347点数解答]
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