VsCode 调试 MySQL 源码

1. 启动 MySQL

2. 查看 MySQL 进程号

[root@ ~]# ps -ef | grep mysqld
root     21479     1  0 Nov01 ?        00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/data/mysqld.pid
root     26622 21479  0 Nov03 ?        03:03:35 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=root --log-error=/usr/local/mysql/data/mysqld.log --pid-file=/usr/local/mysql/data/mysqld.pid --socket=/usr/local/mysql/data/mysql.sock --port=3306
root     28442 28363  0 10:35 pts/3    00:00:00 grep --color=auto mysqld

3. 使用 VsCode 打开 MySQL 源码

4. 配置 launch.json 文件，内容如下：

{
    // 使用 IntelliSense 了解相关属性。 
    // 悬停以查看现有属性的描述。
    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
    "configurations": [
        {
            //"preLaunchTask": "initialize",
            "name": "Debug mysqld",
            "type": "cppdbg",
            //"request": "launch",
            "request": "attach",
            //在此处直接添加进程号即可，或者直接点击调试按钮在提示窗口输入进程号
            "pid": "21180",       
            // "program": "${workspaceFolder}/bld/bin/mysqld",
            "program": "/usr/local/mysql/bin/mysqld",
            "args": [
                "--defaults-file=/etc/my.cnf", "--debug=d,info:F:L","--user=mysql"
            ],
            "cwd": "${workspaceFolder}"
        }
    ]
}

5. 点击调试运行按钮