Linux+VSCode搭建redis源码阅读环境

本文介绍的redis源码阅读环境基于Linux，使用VSCode搭建编译调试环境。使用的redis版本6.2.6，其他的版本区别也不大。

1. 下载Redis源码，并命令行编译

在github redis release页面下载想看的版本，并在终端中进行编译，首先要保证命令编译通过。redis的编译非常简单，在源码根目录执行make即可编译。

2. 配置VSCode调试源码

VSCode需安装C/C++插件，安装完成后打开源码目录。在源码根目录新建.vscode目录，并新建launch.json与tasks.json文件。

launch.json内容如下：

{
          
   
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        
        {
          
   
            "name": "redis",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/src/redis-server",
            "args": [
                "redis.conf"
            ],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "preLaunchTask": "build",
            "setupCommands": [
                {
          
   
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
          
   
                    "description":  "Set Disassembly Flavor to Intel",
                    "text": "-gdb-set disassembly-flavor intel",
                    "ignoreFailures": true
                }
          ]
        }
    ]
}

tasks.json内容：

{
          
   
    "version": "2.0.0",
    "tasks": [
        {
          
   
            "label": "build", 
            "type": "shell", 
            "command": "make",
            "args": [
                "CFLAGS="-g -O0""
            ]
        }
    ]
}

3.测试Debug

redis的main函数在src/server.c文件中，可以在main函数中打个断点。最后在调试面板中启动调试，测试是否正常。