reachable: per-object progress

The current progress code really just counts commits.
This patch makes it count all objects, giving us a "total"
count close to what a repack would show. This is nice when
using "git gc", which will usually have just repacked the
whole repo.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/reachable.c b/reachable.c
index 293d37d22481561b46cb8fbf747205a6ba73a420..bf7970661f26664e461ed5d6fd7a1982f7e8fadd 100644 (file)
--- a/reachable.c
+++ b/reachable.c
@@ -9,10 +9,23 @@
 #include "cache-tree.h"
 #include "progress.h"
 
+struct connectivity_progress {
+       struct progress *progress;
+       unsigned long count;
+};
+
+static void update_progress(struct connectivity_progress *cp)
+{
+       cp->count++;
+       if ((cp->count & 1023) == 0)
+               display_progress(cp->progress, cp->count);
+}
+
 static void process_blob(struct blob *blob,
                         struct object_array *p,
                         struct name_path *path,
-                        const char *name)
+                        const char *name,
+                        struct connectivity_progress *cp)
 {
        struct object *obj = &blob->object;
 
@@ -21,6 +34,7 @@ static void process_blob(struct blob *blob,
        if (obj->flags & SEEN)
                return;
        obj->flags |= SEEN;
+       update_progress(cp);
        /* Nothing to do, really .. The blob lookup was the important part */
 }
 
@@ -35,7 +49,8 @@ static void process_gitlink(const unsigned char *sha1,
 static void process_tree(struct tree *tree,
                         struct object_array *p,
                         struct name_path *path,
-                        const char *name)
+                        const char *name,
+                        struct connectivity_progress *cp)
 {
        struct object *obj = &tree->object;
        struct tree_desc desc;
@@ -47,6 +62,7 @@ static void process_tree(struct tree *tree,
        if (obj->flags & SEEN)
                return;
        obj->flags |= SEEN;
+       update_progress(cp);
        if (parse_tree(tree) < 0)
                die("bad tree object %s", sha1_to_hex(obj->sha1));
        add_object(obj, p, path, name);
@@ -58,23 +74,25 @@ static void process_tree(struct tree *tree,
 
        while (tree_entry(&desc, &entry)) {
                if (S_ISDIR(entry.mode))
-                       process_tree(lookup_tree(entry.sha1), p, &me, entry.path);
+                       process_tree(lookup_tree(entry.sha1), p, &me, entry.path, cp);
                else if (S_ISGITLINK(entry.mode))
                        process_gitlink(entry.sha1, p, &me, entry.path);
                else
-                       process_blob(lookup_blob(entry.sha1), p, &me, entry.path);
+                       process_blob(lookup_blob(entry.sha1), p, &me, entry.path, cp);
        }
        free(tree->buffer);
        tree->buffer = NULL;
 }
 
-static void process_tag(struct tag *tag, struct object_array *p, const char *name)
+static void process_tag(struct tag *tag, struct object_array *p,
+                       const char *name, struct connectivity_progress *cp)
 {
        struct object *obj = &tag->object;
 
        if (obj->flags & SEEN)
                return;
        obj->flags |= SEEN;
+       update_progress(cp);
 
        if (parse_tag(tag) < 0)
                die("bad tag object %s", sha1_to_hex(obj->sha1));
@@ -82,17 +100,17 @@ static void process_tag(struct tag *tag, struct object_array *p, const char *nam
                add_object(tag->tagged, p, NULL, name);
 }
 
-static void walk_commit_list(struct rev_info *revs, struct progress *progress)
+static void walk_commit_list(struct rev_info *revs,
+                            struct connectivity_progress *cp)
 {
        int i;
        struct commit *commit;
        struct object_array objects = OBJECT_ARRAY_INIT;
-       uint32_t count = 0;
 
        /* Walk all commits, process their trees */
        while ((commit = get_revision(revs)) != NULL) {
-               process_tree(commit->tree, &objects, NULL, "");
-               display_progress(progress, ++count);
+               process_tree(commit->tree, &objects, NULL, "", cp);
+               update_progress(cp);
        }
 
        /* Then walk all the pending objects, recursively processing them too */
@@ -100,17 +118,16 @@ static void walk_commit_list(struct rev_info *revs, struct progress *progress)
                struct object_array_entry *pending = revs->pending.objects + i;
                struct object *obj = pending->item;
                const char *name = pending->name;
-               display_progress(progress, ++count);
                if (obj->type == OBJ_TAG) {
-                       process_tag((struct tag *) obj, &objects, name);
+                       process_tag((struct tag *) obj, &objects, name, cp);
                        continue;
                }
                if (obj->type == OBJ_TREE) {
-                       process_tree((struct tree *)obj, &objects, NULL, name);
+                       process_tree((struct tree *)obj, &objects, NULL, name, cp);
                        continue;
                }
                if (obj->type == OBJ_BLOB) {
-                       process_blob((struct blob *)obj, &objects, NULL, name);
+                       process_blob((struct blob *)obj, &objects, NULL, name, cp);
                        continue;
                }
                die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
@@ -199,6 +216,8 @@ static void add_cache_refs(struct rev_info *revs)
 void mark_reachable_objects(struct rev_info *revs, int mark_reflog,
                            struct progress *progress)
 {
+       struct connectivity_progress cp;
+
        /*
         * Set up revision parsing, and mark us as being interested
         * in all object types, not just commits.
@@ -217,11 +236,15 @@ void mark_reachable_objects(struct rev_info *revs, int mark_reflog,
        if (mark_reflog)
                for_each_reflog(add_one_reflog, revs);
 
+       cp.progress = progress;
+       cp.count = 0;
+
        /*
         * Set up the revision walk - this will move all commits
         * from the pending list to the commit walking list.
         */
        if (prepare_revision_walk(revs))
                die("revision walk setup failed");
-       walk_commit_list(revs, progress);
+       walk_commit_list(revs, &cp);
+       display_progress(cp.progress, cp.count);
 }