Experimental File Watcher - high CPU on "circular" symlinks

[promansk]

• VSCode Version: 1.17.0 (be377c0)
• OS Version: Ubuntu 16.04 LTS

Steps to Reproduce:

1. Set "files.useExperimentalFileWatcher": true and close VS Code
2. Create a symlink to root directory (must be an absolute link, not relative!):

$ mkdir loop
$ ln -s / loop/root

3. Open directory containing that symlink in VS Code:

$ code --disable-extensions loop

4. Watch processes - one of vs code processes takes high CPU

Reproduces without extensions: Yes

See also: #3998

[xeor]

Just noticed the same thing on osx...

[promansk]

Updating issue with:

• vs code version 1.17.0
• reproduces without extensions

Also, I found memory usage increasing over time...

[lukszy]

Same issue here
vs code version 1.17.2
Even after closing the VsCode the Code Helpers is still running with 100% CPU usage.

[Tyriar]

Reported upstream Axosoft/nsfw#40

[Tyriar]

Upstream PR Axosoft/nsfw#41

[Tyriar]

The original PR was closed so I opened one which was merged Axosoft/nsfw#47, just need a release to pull this in.