From: Derrick Stolee
Signed-off-by: Derrick Stolee
---
commit-reach.c | 62 +
commit-reach.h | 13 ++
upload-pack.c | 69 +-
3 files changed, 76 insertions(+), 68 deletions(-)
diff --git a/commit-reach.c b/commit-reach.c
index 9e56f90ea..e07ff993f 100644
--- a/commit-reach.c
+++ b/commit-reach.c
@@ -9,6 +9,7 @@
#include "commit-reach.h"
/* Remember to update object flag allocation in object.h */
+#define REACHABLE (1u<<15)
#define PARENT1(1u<<16)
#define PARENT2(1u<<17)
#define STALE (1u<<18)
@@ -531,3 +532,64 @@ int commit_contains(struct ref_filter *filter, struct
commit *commit,
return contains_tag_algo(commit, list, cache) == CONTAINS_YES;
return is_descendant_of(commit, list);
}
+
+int reachable(struct commit *from, int with_flag, int assign_flag,
+ time_t min_commit_date)
+{
+ struct prio_queue work = { compare_commits_by_commit_date };
+
+ prio_queue_put(, from);
+ while (work.nr) {
+ struct commit_list *list;
+ struct commit *commit = prio_queue_get();
+
+ if (commit->object.flags & with_flag) {
+ from->object.flags |= assign_flag;
+ break;
+ }
+ if (!commit->object.parsed)
+ parse_object(the_repository, >object.oid);
+ if (commit->object.flags & REACHABLE)
+ continue;
+ commit->object.flags |= REACHABLE;
+ if (commit->date < min_commit_date)
+ continue;
+ for (list = commit->parents; list; list = list->next) {
+ struct commit *parent = list->item;
+ if (!(parent->object.flags & REACHABLE))
+ prio_queue_put(, parent);
+ }
+ }
+ from->object.flags |= REACHABLE;
+ clear_commit_marks(from, REACHABLE);
+ clear_prio_queue();
+ return (from->object.flags & assign_flag);
+}
+
+int can_all_from_reach_with_flag(struct object_array *from,
+int with_flag, int assign_flag,
+time_t min_commit_date)
+{
+ int i;
+
+ for (i = 0; i < from->nr; i++) {
+ struct object *from_one = from->objects[i].item;
+
+ if (from_one->flags & assign_flag)
+ continue;
+ from_one = deref_tag(the_repository, from_one, "a from object",
0);
+ if (!from_one || from_one->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.
+*/
+ from->objects[i].item->flags |= assign_flag;
+ continue;
+ }
+ if (!reachable((struct commit *)from_one, with_flag,
assign_flag,
+ min_commit_date))
+ return 0;
+ }
+ return 1;
+}
diff --git a/commit-reach.h b/commit-reach.h
index 925cb05d7..ce3b963e6 100644
--- a/commit-reach.h
+++ b/commit-reach.h
@@ -56,4 +56,17 @@ define_commit_slab(contains_cache, enum contains_result);
int commit_contains(struct ref_filter *filter, struct commit *commit,
struct commit_list *list, struct contains_cache *cache);
+int reachable(struct commit *from, int with_flag, int assign_flag,
+ time_t min_commit_date);
+
+/*
+ * Determine if every commit in 'from' can reach at least one commit
+ * that is marked with 'with_flag'. As we traverse, use 'assign_flag'
+ * as a marker for commits that are already visited. Do not walk
+ * commits with date below 'min_commit_date'.
+ */
+int can_all_from_reach_with_flag(struct object_array *from,
+int with_flag, int assign_flag,
+time_t min_commit_date);
+
#endif
diff --git a/upload-pack.c b/upload-pack.c
index 96298e50e..11c426685 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -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)
@@ -336,73 +336,6 @@ static int got_oid(const char *hex, struct object_id *oid)
return 0;
}
-static int reachable(struct commit *from, int with_flag, int assign_flag,
-time_t
