Crash when copying or cutting large directory

[booth-w]

Describe the bug Inconsistent crash when copying or cutting a large directory. This time it crashed at 74% copying a 307GB directory of 1,250 files but it has happened before with one only 50GB large.

To Reproduce Steps to reproduce the behavior:

1. Copy or cut
2. Paste

Expected behavior Copies or cuts without crashing

Screenshots It first happened a while ago but I couldn't get the stack trace because it didn't exit cleanly, so for a while, all I could get was this:

But I got it this time by running it with 2>> superfile.log

I had debug logging disabled so .local/state/superfile/superfile.log didn't have anything.

System information (please complete the following information):

• OS: Arch Linux
• Version 6.14.6-arch1-1
• Superfile Version: v1.2.1-184-g0c15880

[lazysegtree]

Superfile's file operation code isn't written in a very scalable way, at least thats what I feel. There are other similar known issues for example :

• https://github.com/yorukot/superfile/issues/571
• https://github.com/yorukot/superfile/issues/782
• Performance tagged issues - https://github.com/yorukot/superfile/issues?q=state%3Aopen%20label%3A%22performance%22

What we need is a thorough reviewing and revamp (rewrite of some part of the code if necessary), and some benchmarking tests which validates performance and functionality for operations at high scale.

[lazysegtree]

RCAing this specific issue instance is hard, unless we have a clear reproduction mechanism. But we could look at the code and figure out some possible code paths, that could lead to this.

[lazysegtree]

Observed crash while copy a directory with 100K files.