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pack-objects: move 'layer' into 'struct packing_data'

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This reduces the size of 'struct object_entry' from 88 bytes
to 80 and therefore makes packing objects more efficient.

For example on a Linux repo with 12M objects,
`git pack-objects --all` needs extra 96MB memory even if the
layer feature is not used.

Helped-by: Jeff King <peff@peff.net>
Helped-by: Duy Nguyen <pclouds@gmail.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder
2018-08-16 08:13:13 +02:00
committed by Junio C Hamano
parent 108f530385
commit fe0ac2fb7f
4 changed files with 28 additions and 6 deletions
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6
pack-objects.c
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@ -163,6 +163,9 @@ struct object_entry *packlist_alloc(struct packing_data *pdata,
if (pdata->tree_depth)
REALLOC_ARRAY(pdata->tree_depth, pdata->nr_alloc);
if (pdata->layer)
REALLOC_ARRAY(pdata->layer, pdata->nr_alloc);
}
new_entry = pdata->objects + pdata->nr_objects++;
@ -181,5 +184,8 @@ struct object_entry *packlist_alloc(struct packing_data *pdata,
if (pdata->tree_depth)
pdata->tree_depth[pdata->nr_objects - 1] = 0;
if (pdata->layer)
pdata->layer[pdata->nr_objects - 1] = 0;
return new_entry;
}