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authorNguyễn Thái Ngọc Duy <pclouds@gmail.com>2013-12-05 20:02:47 +0700
committerJunio C Hamano <gitster@pobox.com>2013-12-10 16:14:18 -0800
commit0a1bc12b6e401825f009ac8bb14fc438f77e2d9f (patch)
treef727b9dd79cb0bed05cc0635fd7b266c19f712d6 /shallow.c
parent614db3e2920f4d1c79931833614acf36a00fa88b (diff)
downloadgit-0a1bc12b6e401825f009ac8bb14fc438f77e2d9f.tar.gz
receive-pack: allow pushes that update .git/shallow
The basic 8 steps to update .git/shallow does not fully apply here because the user may choose to accept just a few refs (while fetch always accepts all refs). The steps are modified a bit. 1-6. same as before. After calling assign_shallow_commits_to_refs at step 6, each shallow commit has a bitmap that marks all refs that require it. 7. mark all "ours" shallow commits that are reachable from any refs. We will need to do the original step 7 on them later. 8. go over all shallow commit bitmaps, mark refs that require new shallow commits. 9. setup a strict temporary shallow file to plug all the holes, even if it may cut some of our history short. This file is used by all hooks. The hooks could use --shallow-file=$GIT_DIR/shallow to overcome this and reach everything in current repo. 10. go over the new refs one by one. For each ref, do the reachability test if it needs a shallow commit on the list from step 7. Remove it if it's reachable from our refs. Gather all required shallow commits, run check_everything_connected() with the new ref, then install them to .git/shallow. This mode is disabled by default and can be turned on with receive.shallowupdate Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'shallow.c')
-rw-r--r--shallow.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/shallow.c b/shallow.c
index ec9179480f..3c36dd82bc 100644
--- a/shallow.c
+++ b/shallow.c
@@ -617,3 +617,26 @@ static void post_assign_shallow(struct shallow_info *info,
free(ca.commits);
}
+
+/* (Delayed) step 7, reachability test at commit level */
+int delayed_reachability_test(struct shallow_info *si, int c)
+{
+ if (si->need_reachability_test[c]) {
+ struct commit *commit = lookup_commit(si->shallow->sha1[c]);
+
+ if (!si->commits) {
+ struct commit_array ca;
+ memset(&ca, 0, sizeof(ca));
+ head_ref(add_ref, &ca);
+ for_each_ref(add_ref, &ca);
+ si->commits = ca.commits;
+ si->nr_commits = ca.nr;
+ }
+
+ si->reachable[c] = in_merge_bases_many(commit,
+ si->nr_commits,
+ si->commits);
+ si->need_reachability_test[c] = 0;
+ }
+ return si->reachable[c];
+}