Ryan Houdek 50cf74db0a Linux: Improve performance of hot paths in path searching ...

`GetEmulatedPath` and `OpenAt` are called a /lot/ in applications.
std::filesystem::path handling here is quite heavy and costly for what
we are trying to achieve.

Remove this usage and instead use lstat, access, and readlink directly
which is a heck of a lot faster.

In particular this helps out pressure-vessel, shaving off launch times
by 1-2 seconds.
Going from ~22 seconds down to ~20 seconds.

2022-12-05 03:51:50 -08:00

..

EmulatedFiles.cpp

Linux: Improve performance of hot paths in path searching

2022-12-05 03:51:50 -08:00

EmulatedFiles.h

EmulatedFiles: Defer cpuinfo file initialization to first access

2022-11-27 15:34:10 -08:00