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Merge branch 'ds/reachable'

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The code for computing history reachability has been shuffled,
obtained a bunch of new tests to cover them, and then being
improved.

* ds/reachable:
  commit-reach: correct accidental #include of C file
  commit-reach: use can_all_from_reach
  commit-reach: make can_all_from_reach... linear
  commit-reach: replace ref_newer logic
  test-reach: test commit_contains
  test-reach: test can_all_from_reach_with_flags
  test-reach: test reduce_heads
  test-reach: test get_merge_bases_many
  test-reach: test is_descendant_of
  test-reach: test in_merge_bases
  test-reach: create new test tool for ref_newer
  commit-reach: move can_all_from_reach_with_flags
  upload-pack: generalize commit date cutoff
  upload-pack: refactor ok_to_give_up()
  upload-pack: make reachable() more generic
  commit-reach: move commit_contains from ref-filter
  commit-reach: move ref_newer from remote.c
  commit.h: remove method declarations
  commit-reach: move walk methods from commit.c
This commit is contained in:
Junio C Hamano
2018-09-17 13:53:52 -07:00
parent 4d6d6ef1fc 6621c83874
commit 1b7a91da71
38 changed files with 1180 additions and 634 deletions
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58
upload-pack.c
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@ -24,13 +24,13 @@
#include "quote.h"
#include "upload-pack.h"
#include "serve.h"
#include "commit-reach.h"
/* Remember to update object flag allocation in object.h */
#define THEY_HAVE (1u << 11)
#define OUR_REF (1u << 12)
#define WANTED (1u << 13)
#define COMMON_KNOWN (1u << 14)
#define REACHABLE (1u << 15)
#define SHALLOW (1u << 16)
#define NOT_SHALLOW (1u << 17)
@ -337,64 +337,16 @@ static int got_oid(const char *hex, struct object_id *oid)
return 0;
}
static int reachable(struct commit *want)
{
struct prio_queue work = { compare_commits_by_commit_date };
prio_queue_put(&work, want);
while (work.nr) {
struct commit_list *list;
struct commit *commit = prio_queue_get(&work);
if (commit->object.flags & THEY_HAVE) {
want->object.flags |= COMMON_KNOWN;
break;
}
if (!commit->object.parsed)
parse_object(the_repository, &commit->object.oid);
if (commit->object.flags & REACHABLE)
continue;
commit->object.flags |= REACHABLE;
if (commit->date < oldest_have)
continue;
for (list = commit->parents; list; list = list->next) {
struct commit *parent = list->item;
if (!(parent->object.flags & REACHABLE))
prio_queue_put(&work, parent);
}
}
want->object.flags |= REACHABLE;
clear_commit_marks(want, REACHABLE);
clear_prio_queue(&work);
return (want->object.flags & COMMON_KNOWN);
}
static int ok_to_give_up(void)
{
int i;
uint32_t min_generation = GENERATION_NUMBER_ZERO;
if (!have_obj.nr)
return 0;
for (i = 0; i < want_obj.nr; i++) {
struct object *want = want_obj.objects[i].item;
if (want->flags & COMMON_KNOWN)
continue;
want = deref_tag(the_repository, want, "a want line", 0);
if (!want || want->type != OBJ_COMMIT) {
/* no way to tell if this is reachable by
* looking at the ancestry chain alone, so
* leave a note to ourselves not to worry about
* this object anymore.
*/
want_obj.objects[i].item->flags |= COMMON_KNOWN;
continue;
}
if (!reachable((struct commit *)want))
return 0;
}
return 1;
return can_all_from_reach_with_flag(&want_obj, THEY_HAVE,
COMMON_KNOWN, oldest_have,
min_generation);
}
static int get_common_commits(void)