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| author | Junio C Hamano <gitster@pobox.com> | 2018-09-17 13:53:55 -0700 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2018-09-17 13:53:55 -0700 |
| commit | f3504ea3dd21b0a6d38bcd369efa0663cdc05416 (patch) | |
| tree | c8eb1191474dc37e25f082917e803915525c15d1 /pack-objects.h | |
| parent | fba9654364a523bf146df26052ab05dd52c1d719 (diff) | |
| parent | fe0ac2fb7f8e87d37ef83dcee2d93901d58d8277 (diff) | |
Merge branch 'cc/delta-islands'
Lift code from GitHub to restrict delta computation so that an
object that exists in one fork is not made into a delta against
another object that does not appear in the same forked repository.
* cc/delta-islands:
pack-objects: move 'layer' into 'struct packing_data'
pack-objects: move tree_depth into 'struct packing_data'
t5320: tests for delta islands
repack: add delta-islands support
pack-objects: add delta-islands support
pack-objects: refactor code into compute_layer_order()
Add delta-islands.{c,h}
Diffstat (limited to 'pack-objects.h')
| -rw-r--r-- | pack-objects.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/pack-objects.h b/pack-objects.h index b0c1f137c6..2ca39cfcfe 100644 --- a/pack-objects.h +++ b/pack-objects.h @@ -103,6 +103,7 @@ struct object_entry { unsigned no_try_delta:1; unsigned type_:TYPE_BITS; unsigned in_pack_type:TYPE_BITS; /* could be delta */ + unsigned preferred_base:1; /* * we do not pack this, but is available * to be used as the base object to delta @@ -158,6 +159,10 @@ struct packing_data { uintmax_t oe_size_limit; uintmax_t oe_delta_size_limit; + + /* delta islands */ + unsigned int *tree_depth; + unsigned char *layer; }; void prepare_packing_data(struct packing_data *pdata); @@ -400,4 +405,38 @@ static inline void oe_set_delta_size(struct packing_data *pack, } } +static inline unsigned int oe_tree_depth(struct packing_data *pack, + struct object_entry *e) +{ + if (!pack->tree_depth) + return 0; + return pack->tree_depth[e - pack->objects]; +} + +static inline void oe_set_tree_depth(struct packing_data *pack, + struct object_entry *e, + unsigned int tree_depth) +{ + if (!pack->tree_depth) + ALLOC_ARRAY(pack->tree_depth, pack->nr_objects); + pack->tree_depth[e - pack->objects] = tree_depth; +} + +static inline unsigned char oe_layer(struct packing_data *pack, + struct object_entry *e) +{ + if (!pack->layer) + return 0; + return pack->layer[e - pack->objects]; +} + +static inline void oe_set_layer(struct packing_data *pack, + struct object_entry *e, + unsigned char layer) +{ + if (!pack->layer) + ALLOC_ARRAY(pack->layer, pack->nr_objects); + pack->layer[e - pack->objects] = layer; +} + #endif |