Derrick Stolee 3c063bb6e8 pack-objects: refactor path-walk delta phase ...

Previously, the --path-walk option to 'git pack-objects' would compute
deltas inline with the path-walk logic. This would make the progress
indicator look like it is taking a long time to enumerate objects, and
then very quickly computed deltas.

Instead of computing deltas on each region of objects organized by tree,
store a list of regions corresponding to these groups. These can later
be pulled from the list for delta compression before doing the "global"
delta search.

This presents a new progress indicator that can be used in tests to
verify that this stage is happening.

The current implementation is not integrated with threads, but could be
done in a future update.

Since we do not attempt to sort objects by size until after exploring
all trees, we can remove the previous change to t5530 due to a different
error message appearing first.

Signed-off-by: Derrick Stolee <stolee@gmail.com>

2024-09-26 23:34:51 +02:00

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