summaryrefslogtreecommitdiff
path: root/builtin
diff options
context:
space:
mode:
authorJunio C Hamano <gitster@pobox.com>2012-09-11 18:35:26 (GMT)
committerJunio C Hamano <gitster@pobox.com>2012-09-11 18:36:05 (GMT)
commit34f5130af84f7a37fba327d5a5be4f4427dc6886 (patch)
tree1f8836fe7fb70566e31b3f4f5d1475fabd95981b /builtin
parent0083f1d43a7280aefa23656eaac7266139484b24 (diff)
parentf37d3c755209234acfc2ca280027ebdab8e9ea8a (diff)
downloadgit-34f5130af84f7a37fba327d5a5be4f4427dc6886.zip
git-34f5130af84f7a37fba327d5a5be4f4427dc6886.tar.gz
git-34f5130af84f7a37fba327d5a5be4f4427dc6886.tar.bz2
Merge branch 'jc/merge-bases'
Optimise the "merge-base" computation a bit, and also update its users that do not need the full merge-base information to call a cheaper subset. * jc/merge-bases: reduce_heads(): reimplement on top of remove_redundant() merge-base: "--is-ancestor A B" get_merge_bases_many(): walk from many tips in parallel in_merge_bases(): use paint_down_to_common() merge_bases_many(): split out the logic to paint history in_merge_bases(): omit unnecessary redundant common ancestor reduction http-push: use in_merge_bases() for fast-forward check receive-pack: use in_merge_bases() for fast-forward check in_merge_bases(): support only one "other" commit
Diffstat (limited to 'builtin')
-rw-r--r--builtin/branch.c4
-rw-r--r--builtin/fetch.c2
-rw-r--r--builtin/merge-base.c22
-rw-r--r--builtin/receive-pack.c8
4 files changed, 26 insertions, 10 deletions
diff --git a/builtin/branch.c b/builtin/branch.c
index e61b0ec..5cb6d78 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -130,7 +130,7 @@ static int branch_merged(int kind, const char *name,
if (!reference_rev)
reference_rev = head_rev;
- merged = in_merge_bases(rev, &reference_rev, 1);
+ merged = in_merge_bases(rev, reference_rev);
/*
* After the safety valve is fully redefined to "check with
@@ -140,7 +140,7 @@ static int branch_merged(int kind, const char *name,
* a gentle reminder is in order.
*/
if ((head_rev != reference_rev) &&
- in_merge_bases(rev, &head_rev, 1) != merged) {
+ in_merge_bases(rev, head_rev) != merged) {
if (merged)
warning(_("deleting branch '%s' that has been merged to\n"
" '%s', but not yet merged to HEAD."),
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 3f2ad77..97a849a 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -323,7 +323,7 @@ static int update_local_ref(struct ref *ref,
return r;
}
- if (in_merge_bases(current, &updated, 1)) {
+ if (in_merge_bases(current, updated)) {
char quickref[83];
int r;
strcpy(quickref, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV));
diff --git a/builtin/merge-base.c b/builtin/merge-base.c
index 2f223a6..1bc7991 100644
--- a/builtin/merge-base.c
+++ b/builtin/merge-base.c
@@ -26,6 +26,7 @@ static const char * const merge_base_usage[] = {
N_("git merge-base [-a|--all] <commit> <commit>..."),
N_("git merge-base [-a|--all] --octopus <commit>..."),
N_("git merge-base --independent <commit>..."),
+ N_("git merge-base --is-ancestor <commit> <commit>"),
NULL
};
@@ -70,6 +71,20 @@ static int handle_octopus(int count, const char **args, int reduce, int show_all
return 0;
}
+static int handle_is_ancestor(int argc, const char **argv)
+{
+ struct commit *one, *two;
+
+ if (argc != 2)
+ die("--is-ancestor takes exactly two commits");
+ one = get_commit_reference(argv[0]);
+ two = get_commit_reference(argv[1]);
+ if (in_merge_bases(one, two))
+ return 0;
+ else
+ return 1;
+}
+
int cmd_merge_base(int argc, const char **argv, const char *prefix)
{
struct commit **rev;
@@ -77,11 +92,14 @@ int cmd_merge_base(int argc, const char **argv, const char *prefix)
int show_all = 0;
int octopus = 0;
int reduce = 0;
+ int is_ancestor = 0;
struct option options[] = {
OPT_BOOLEAN('a', "all", &show_all, N_("output all common ancestors")),
OPT_BOOLEAN(0, "octopus", &octopus, N_("find ancestors for a single n-way merge")),
OPT_BOOLEAN(0, "independent", &reduce, N_("list revs not reachable from others")),
+ OPT_BOOLEAN(0, "is-ancestor", &is_ancestor,
+ N_("is the first one ancestor of the other?")),
OPT_END()
};
@@ -89,6 +107,10 @@ int cmd_merge_base(int argc, const char **argv, const char *prefix)
argc = parse_options(argc, argv, prefix, options, merge_base_usage, 0);
if (!octopus && !reduce && argc < 2)
usage_with_options(merge_base_usage, options);
+ if (is_ancestor && (show_all | octopus | reduce))
+ die("--is-ancestor cannot be used with other options");
+ if (is_ancestor)
+ return handle_is_ancestor(argc, argv);
if (reduce && (show_all || octopus))
die("--independent cannot be used with other options");
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 2cb854f..9145f1a 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -480,7 +480,6 @@ static const char *update(struct command *cmd)
!prefixcmp(name, "refs/heads/")) {
struct object *old_object, *new_object;
struct commit *old_commit, *new_commit;
- struct commit_list *bases, *ent;
old_object = parse_object(old_sha1);
new_object = parse_object(new_sha1);
@@ -493,12 +492,7 @@ static const char *update(struct command *cmd)
}
old_commit = (struct commit *)old_object;
new_commit = (struct commit *)new_object;
- bases = get_merge_bases(old_commit, new_commit, 1);
- for (ent = bases; ent; ent = ent->next)
- if (!hashcmp(old_sha1, ent->item->object.sha1))
- break;
- free_commit_list(bases);
- if (!ent) {
+ if (!in_merge_bases(old_commit, new_commit)) {
rp_error("denying non-fast-forward %s"
" (you should pull first)", name);
return "non-fast-forward";