Flush cout buffer automatically

[BBaoVanC]

Currently cout is never flushed. This is a problem because the actual flush timing is implementation defined and also changes whether it's piped or not. If you try to run hypridle | tee idle.log (simple example of trying to persist the log during development), then there is no log output.

This also means if hypridle were to crash, you don't lose all the messages that had the misfortune of not being already flushed.

Also looks like this same issue is present in Hyprland? Although over there it's less of an issue because of rollinglog and the file writer.

[vaxerski]

should we flush it every single log or every few logs...?

[BBaoVanC]

I would say every single log. If you don't then there's a chance (if your destination doesn't automatically flush; shells always do) during debugging that it looks like the program didn't reach a certain point before a crash when in reality, it just didn't get flushed.

[vaxerski]

I guess, we don't log that much in hypridle anyways. sure.

[BBaoVanC]

Can you consider making this change in Hyprland too (and others in the hypr ecosystem too)? I know in Hyprland there is rollinglog and file output which sidestep the issue, but I still think it might be confusing if someone tried piping the log output like any other program.

[vaxerski]

some hyprapps produce a ton of logs esp when tracing and idk if flushing is a good idea