Steps to reproduce:
- Add image sequence to movie clip editor.
- Set cache limit to a low value in the user preferences.
- Playback until old frames starts to be removed from cache.
- Jump to the beginning of the image sequence.
The reason of dead-lock comes from two factors:
- Due to global nature of the cache limiter calls needs to be
guarded with locks.
- Image buffers stored in the cache can have their own cache
(which is used for color management).
Didn't find a better solution than to use recursive lock.
Kind of makes sense since the thread-guardable resource is
recursive (moviecache can have nested moviecaches).
Differential Revision: https://developer.blender.org/D14331
