100% CPU usage during imageproc::window::display_image on Linux

[notgull]

While running the display_image function, one of the CPU's on my computer suddenly rockets up to using 100% of the CPU.

Looking into the backtraces while running gdb, it appears to be happening during sdl2 event retrieval. However, a brief investigation into sdl2's codebase yields nothing that would cause this, and I'm unsure if this issue originates in imageproc or in one of its dependencies.

Here is the program I'm using it in, although I doubt it's that.

[theotherphil]

I’ve never used sdl2 myself, but from a quick look at the code for this function it looks like the issue is using poll_iter rather than wait_iter.

I won’t have time to work on fixing this myself, but would be very happy to accept a PR if this works.

imageproc/src/window.rs

Line 129 in 0929335

for event in event_pump.poll_iter() {

https://docs.rs/sdl2/latest/sdl2/struct.EventPump.html

[theotherphil]

Fixed by #515