Multiple user actions performed quickly could be blocked by undo
compacting memory - if the background compacting task was not complete
when the next undo step was pushed.
Notes:
- This and recent improvements to BLI_array_Store gives over ~2x speedup
compared with 3.3x, over 10x compared with 3.4x.
A sub-surfaced cube with the modifier applied was used for testing
(~1.5 million polys), both randomized & non-randomized verts/edge/faces
were used to avoid the sub-surface memory layout biasing the results.
Tested transforming ~1/3rd of the mesh and inverting selection.
- Without compacting mesh-data in parallel, the optimizations to
BLI_array_store can give similar performance to 3.3x, however there
are still cases where performance isn't quite as good - so compact the
arrays in parallel to ensure performance is at least as good as 3.3x.
Resolves#105046.
fe58ccfafb