ccls wont quit when vscode quit

[findNextStep]

Observed behavior

close vscode when ccls has many jobs need to index, the ccls will still running before all index done

Expected behavior

ccls stop to work when vscode closed.

Steps to reproduce

1. open a large workspace without ccls index
2. once ccls start index and show xxx/xxxx jobs
3. close vscode
4. ccls is still running in background and use cpu
5. open vscode again another ccls start and use cpu

System information

• OS: mac

[GitMensch]

I'd say the issue is that on the restart the old ccls process should be used (or the new one should wait until the indexing files are not locked any more if the old one closes the handles on these files after writing the index).