MiniMagick::Image @tempfile exists after GC?

[fuminori-ido-m]

MiniMagick::Image.create creates @tempfile (ruby Tempfile object) at:

tempfile = MiniMagick::Utilities.tempfile(ext.to_s.downcase, &block)

at MiniMagick::Utilities#tempfile:

Tempfile.new(["mini_magick", ...

Is this @tempfile guaranteed to exist during minimagick operation (e.g. convert)? I'm asking this question because:

1. This temporary file is sometimes disappeared under high CPU pressure in our application.
2. ruby Tempfile is deleted at GC and at exit according to ruby doc.

[janko]

The tempfile should only deleted by GC if nothing is referencing the Tempfile object anymore. MiniMagick is internally implemented to keep a reference while commands are being executed. Is there any specific code you're concerned about?

[fuminori-ido-m]

Thank you for your prompt reply, @janko !

MiniMagick is internally implemented to keep a reference while commands are being executed

I think so too and I couldn't reproduce tempfile disappearance while enforce GC.start in my debug console during minimagick operation. But... I saw sometimes tempfile disappearance happened during minimagick convert operation under CPU high pressure.

It could be another reason of tempfile disappearance (maybe disk size shortage(even though I already checked it), or something??) so please close this issue if you do not see any problem.