vscode附着调试
我有一个程序，是别的程序调用启动的，所以需要等它的进程启动后，再附着上去调试。
编写Launch.json:
{"version": "0.2.0","configurations": [{"name": "(gdb) Launch","type": "cppdbg","request": "launch","program": "${workspaceFolder}/cmakeBuild/build/bin/abc","args": [],"stopAtEntry": false,"cwd": "${workspaceFolder}/cmakeBuild/build/bin","environment": [],"externalConsole": false,"MIMode": "gdb","preLaunchTask": "","setupCommands": [{"description": "Enable pretty-printing for gdb","text": "-enable-pretty-printing","ignoreFailures": false},{"description": "Set Disassembly Flavor to Intel","text": "-gdb-set disassembly-flavor intel","ignoreFailures": true}],"envFile": "${workspaceFolder}/.env"},{"name":"(gdb) Attach","type": "cppdbg","request": "attach""processId":"${command:pickProcess}","program": "${workspaceRoot}/cmakeBuild/build/bin/abc","MIMode": "gdb","setupCommands": [{"description": "Enable pretty-printing for gdb","text": "-enable-pretty-printing","ignoreFailures": false},{"description": "Set Disassembly Flavor to Intel","text": "-gdb-set disassembly-flavor intel","ignoreFailures": true}]}]
}调试时，选(gdb) Attach,等要调试的进程启动了，按F5，会跳出选择进程的窗口，选择要附加的进程， 附加后，就可以调试了，以前设置的断点，也会被捕捉中断。
有时候，我们要调试的是在进程启动时的代码，等我们附着上后，设置的断点已经运行过去了。这时候可以在进程启动的地方，加延时，方便附着。
int loop = 0；
while(loop <20)
{sleep(1);++loop;
}
这个要加在初始化代码后面，不要影响初始化。会sleep 20秒，附着上后，暂停，修改loop大于20，就退出循环了，往后走了。vscode里，有时候loop会修改不了，就等它自己超过20退出吧。