[PATCH v5 5/7] commit/revisions: bookkeeping before refactoring
- From
Derrick Stolee <stolee@gmail.com>
- Date
- Nov 1, 2018, 13:46 UTC
- Message-ID
- <20181101134623.84055-6-dstolee@microsoft.com>
- In-Reply-To
- <20181101134623.84055-1-dstolee@microsoft.com>
There are a few things that need to move around a little before making a big refactoring in the topo-order logic:
1. We need access to record_author_date() and compare_commits_by_author_date() in revision.c. These are used currently by sort_in_topological_order() in commit.c.
2. Moving these methods to commit.h requires adding an author_date_slab declaration to commit.h. Consumers will need their own implementation.
3. The add_parents_to_list() method in revision.c performs logic around the UNINTERESTING flag and other special cases depending on the struct rev_info. Allow this method to ignore a NULL 'list' parameter, as we will not be populating the list for our walk. Also rename the method to the slightly more generic name process_parents() to make clear that this method does more than add to a list (and no list is required anymore).
Helped-by: Jeff King <peff@peff.net> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> --- commit.c | 9 ++++----- commit.h | 7 +++++++ revision.c | 18 ++++++++++-------- 3 files changed, 21 insertions(+), 13 deletions(-)
diff --git a/commit.c b/commit.c index d0f199e122..a025a0db60 100644 --- a/commit.c +++ b/commit.c @@ -655,11 +655,10 @@ struct commit *pop_commit(struct commit_list **stack) /* count number of children that have not been emitted */ define_commit_slab(indegree_slab, int); -/* record author-date for each commit object */ define_commit_slab(author_date_slab, timestamp_t); -static void record_author_date(struct author_date_slab *author_date, - struct commit *commit) +void record_author_date(struct author_date_slab *author_date, + struct commit *commit) { const char *buffer = get_commit_buffer(commit, NULL); struct ident_split ident; @@ -684,8 +683,8 @@ static void record_author_date(struct author_date_slab *author_date, unuse_commit_buffer(commit, buffer); } -static int compare_commits_by_author_date(const void *a_, const void *b_, - void *cb_data) +int compare_commits_by_author_date(const void *a_, const void *b_, + void *cb_data) { const struct commit *a = a_, *b = b_; struct author_date_slab *author_date = cb_data; diff --git a/commit.h b/commit.h index 2b1a734388..ec5b9093ad 100644 --- a/commit.h +++ b/commit.h @@ -8,6 +8,7 @@ #include "gpg-interface.h" #include "string-list.h" #include "pretty.h" +#include "commit-slab.h" #define COMMIT_NOT_FROM_GRAPH 0xFFFFFFFF #define GENERATION_NUMBER_INFINITY 0xFFFFFFFF @@ -328,6 +329,12 @@ extern int remove_signature(struct strbuf *buf); */ extern int check_commit_signature(const struct commit *commit, struct signature_check *sigc); +/* record author-date for each commit object */ +struct author_date_slab; +void record_author_date(struct author_date_slab *author_date, + struct commit *commit); + +int compare_commits_by_author_date(const void *a_, const void *b_, void *unused); int compare_commits_by_commit_date(const void *a_, const void *b_, void *unused); int compare_commits_by_gen_then_commit_date(const void *a_, const void *b_, void *unused); diff --git a/revision.c b/revision.c index 2dcde8a8ac..36458265a0 100644 --- a/revision.c +++ b/revision.c @@ -768,8 +768,8 @@ static void commit_list_insert_by_date_cached(struct commit *p, struct commit_li *cache = new_entry; } -static int add_parents_to_list(struct rev_info *revs, struct commit *commit, - struct commit_list **list, struct commit_list **cache_ptr) +static int process_parents(struct rev_info *revs, struct commit *commit, + struct commit_list **list, struct commit_list **cache_ptr) { struct commit_list *parent = commit->parents; unsigned left_flag; @@ -808,7 +808,8 @@ static int add_parents_to_list(struct rev_info *revs, struct commit *commit, if (p->object.flags & SEEN) continue; p->object.flags |= SEEN; - commit_list_insert_by_date_cached(p, list, cached_base, cache_ptr); + if (list) + commit_list_insert_by_date_cached(p, list, cached_base, cache_ptr); } return 0; } @@ -847,7 +848,8 @@ static int add_parents_to_list(struct rev_info *revs, struct commit *commit, p->object.flags |= left_flag; if (!(p->object.flags & SEEN)) { p->object.flags |= SEEN; - commit_list_insert_by_date_cached(p, list, cached_base, cache_ptr); + if (list) + commit_list_insert_by_date_cached(p, list, cached_base, cache_ptr); } if (revs->first_parent_only) break; @@ -1091,7 +1093,7 @@ static int limit_list(struct rev_info *revs) if (revs->max_age != -1 && (commit->date < revs->max_age)) obj->flags |= UNINTERESTING; - if (add_parents_to_list(revs, commit, &list, NULL) < 0) + if (process_parents(revs, commit, &list, NULL) < 0) return -1; if (obj->flags & UNINTERESTING) { mark_parents_uninteresting(commit); @@ -2913,7 +2915,7 @@ static struct commit *next_topo_commit(struct rev_info *revs) static void expand_topo_walk(struct rev_info *revs, struct commit *commit) { - if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0) { + if (process_parents(revs, commit, &revs->commits, NULL) < 0) { if (!revs->ignore_missing_links) die("Failed to traverse parents of commit %s", oid_to_hex(&commit->object.oid)); @@ -2979,7 +2981,7 @@ static enum rewrite_result rewrite_one(struct rev_info *revs, struct commit **pp for (;;) { struct commit *p = *pp; if (!revs->limited) - if (add_parents_to_list(revs, p, &revs->commits, &cache) < 0) + if (process_parents(revs, p, &revs->commits, &cache) < 0) return rewrite_one_error; if (p->object.flags & UNINTERESTING) return rewrite_one_ok; @@ -3312,7 +3314,7 @@ static struct commit *get_revision_1(struct rev_info *revs) try_to_simplify_commit(revs, commit); else if (revs->topo_walk_info) expand_topo_walk(revs, commit); - else if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0) { + else if (process_parents(revs, commit, &revs->commits, NULL) < 0) { if (!revs->ignore_missing_links) die("Failed to traverse parents of commit %s", oid_to_hex(&commit->object.oid));
-- 2.19.1.542.gc4df23f792