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This article mainly shows you "what CLR refers to", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "what does CLR mean" this article.

Make a summary about what CLR is.

1. The .NET code contains information about itself called metadata.

2. CLR provides CTS (CLS also has some merit), so you can share the original code between different programming languages.

3. Use metadata to manage code information (not using the registry), so the code is easy to install.

4. Use a unified data type and class library, so the choice of programming language becomes unimportant and easy for team development.

The running process of the code in CLR

1. Select a compiler

First of all, CLR chooses the compiler because CLR can run code developed in different languages.

2. Compile the code into MSIL

CLR uses the compiler of choice to generate MSIL (Microsoft intermediate language) and metadata to load them into PE (portable executable file).

MSIL: an interpreted language that contains code information that makes it easy for JIT to compile into machine languages. It has nothing to do with operating systems and programming languages.

PE: executable file format, windows is DLL or EXE.

3. Use JIT compiler to compile MSIL into machine language.

There are two ways to compile only the currently executed code snippet, and the other is to compile the entire code at once. JIT detects the security of the code.

4. Execute the code

The code * call will be compiled into machine code and will not be recompiled when it is called again.

Related tools

-MSIL generator-MSIL Assembler (ilasm.exe)

-MSIL decompiler-MSIL Assembler (ildasm.exe)

The above is all the contents of this article "what does CLR mean?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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