[bug] It doesn't respond to SIGINT and SIGTERM if it doesn't receive events from Wayland compositor constantly

[kenoss]

$ wl-screenrec -f /tmp/out.mp4
0 fps
0 fps
// SIGINT
^C^C0 fps
^C^C0 fps
^C^C^C^C0 fps
0 fps
// SIGTERM
0 fps
0 fps
// SIGKILL
zsh: killed     wl-screenrec -f /tmp/out.mp4

(Note that I'm testing my Wayland compositor and wlr_screencopy_v1. SHM is supported and DMABUF is not yet. I guess that 0 fps is the result of it.)

I checked the code. This is because EventQueue::blocking_dispatch() here blocks until an event is received and quit_flag is not checked. I recommend using a child thread to process events and using the main thread just to supervise it, for example, using select! of crossbeam with a channel for signals and one for results of the child threads.

[russelltg]

Yes, dmabuf is required for wl-screenrec, but it's a good change request anyways.

[kenoss]

Thanks!