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 <p...@peff.net>
Signed-off-by: Derrick Stolee <dsto...@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
