concurrent_test

A real sheet with a deterministic yield so queued loading and foreground consumers overlap.

Vars
fail_generation	Whether generation throws, to check that ownership is released on failure.
generation_calls	How many times generate_spritesheets() ran.
pause_generation	Whether generation sleeps, so other callers arrive while it owns the sheet.
Procs
create_spritesheets	Uses a tiny real icon to exercise both generation and the smart cache.
generate_spritesheets	Holds the owner long enough for competing consumers and can inject a retryable failure.

Var Details

Whether generation throws, to check that ownership is released on failure.

How many times generate_spritesheets() ran.

Whether generation sleeps, so other callers arrive while it owns the sheet.

Uses a tiny real icon to exercise both generation and the smart cache.

Holds the owner long enough for competing consumers and can inject a retryable failure.