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upload-pack: generalize commit date cutoff

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The ok_to_give_up() method uses the commit date as a cutoff to avoid
walking the entire reachble set of commits. Before moving the
reachable() method to commit-reach.c, pull out the dependence on the
global constant 'oldest_have' with a 'min_commit_date' parameter.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee 2018-07-20 16:33:12 +00:00 committed by Junio C Hamano
parent 921bf7734f
commit 118be5785e
1 changed files with 10 additions and 6 deletions
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16
upload-pack.c
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@ -337,7 +337,7 @@ static int got_oid(const char *hex, struct object_id *oid)
}
static int reachable(struct commit *from, unsigned int with_flag,
unsigned int assign_flag)
unsigned int assign_flag, time_t min_commit_date)
{
struct prio_queue work = { compare_commits_by_commit_date };
@ -355,7 +355,7 @@ static int reachable(struct commit *from, unsigned int with_flag,
if (commit->object.flags & REACHABLE)
continue;
commit->object.flags |= REACHABLE;
if (commit->date < oldest_have)
if (commit->date < min_commit_date)
continue;
for (list = commit->parents; list; list = list->next) {
struct commit *parent = list->item;
@ -372,11 +372,13 @@ static int reachable(struct commit *from, unsigned int with_flag,
/*
* Determine if every commit in 'from' can reach at least one commit
* that is marked with 'with_flag'. As we traverse, use 'assign_flag'
* as a marker for commits that are already visited.
* as a marker for commits that are already visited. Do not walk
* commits with date below 'min_commit_date'.
*/
static int can_all_from_reach_with_flag(struct object_array *from,
unsigned int with_flag,
unsigned int assign_flag)
unsigned int assign_flag,
time_t min_commit_date)
{
int i;
@ -395,7 +397,8 @@ static int can_all_from_reach_with_flag(struct object_array *from,
from->objects[i].item->flags |= assign_flag;
continue;
}
if (!reachable((struct commit *)from_one, with_flag, assign_flag))
if (!reachable((struct commit *)from_one, with_flag, assign_flag,
min_commit_date))
return 0;
}
return 1;
@ -406,7 +409,8 @@ static int ok_to_give_up(void)
if (!have_obj.nr)
return 0;
return can_all_from_reach_with_flag(&want_obj, THEY_HAVE, COMMON_KNOWN);
return can_all_from_reach_with_flag(&want_obj, THEY_HAVE,
COMMON_KNOWN, oldest_have);
}
static int get_common_commits(void)