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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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4
delta-islands.c
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@@ -488,13 +488,13 @@ int compute_pack_layers(struct packing_data *to_pack)
struct object_entry *entry = &to_pack->objects[i];
khiter_t pos = kh_get_sha1(island_marks, entry->idx.oid.hash);
entry->layer = 1;
oe_set_layer(to_pack, entry, 1);
if (pos < kh_end(island_marks)) {
struct island_bitmap *bitmap = kh_value(island_marks, pos);
if (island_bitmap_get(bitmap, island_counter_core))
entry->layer = 0;
oe_set_layer(to_pack, entry, 0);
}
}