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[RFC PATCH 05/10] pack-bitmap: don't rely on bitmap_git->reuse_objects

From
Christian Couder <christian.couder@gmail.com>
Date
Sep 13, 2019, 13:02 UTC
Message-ID
<20190913130226.7449-6-chriscool@tuxfamily.org>
In-Reply-To
<20190913130226.7449-1-chriscool@tuxfamily.org>
From: Jeff King <peff@peff.net>

As we now allocate 2 more words than necessary for each bitmap to serve as marks telling us that we can stop iterating over the words, we don't need to rely on bitmap_git->reuse_objects to stop iterating over the words.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 pack-bitmap.c | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/pack-bitmap.c b/pack-bitmap.c
index ed2befaac6..b2422fed8f 100644
--- a/pack-bitmap.c
+++ b/pack-bitmap.c
@@ -622,7 +622,7 @@ static void show_objects_for_type(
 	enum object_type object_type,
 	show_reachable_fn show_reach)
 {
-	size_t pos = 0, i = 0;
+	size_t i = 0;
 	uint32_t offset;
 
 	struct ewah_iterator it;
@@ -630,13 +630,15 @@ static void show_objects_for_type(
 
 	struct bitmap *objects = bitmap_git->result;
 
-	if (bitmap_git->reuse_objects == bitmap_git->pack->num_objects)
-		return;
-
 	ewah_iterator_init(&it, type_filter);
 
-	while (i < objects->word_alloc && ewah_iterator_next(&filter, &it)) {
+	for (i = 0; i < objects->word_alloc &&
+			ewah_iterator_next(&filter, &it); i++) {
 		eword_t word = objects->words[i] & filter;
+		size_t pos = (i * BITS_IN_EWORD);
+
+		if (!word)
+			continue;
 
 		for (offset = 0; offset < BITS_IN_EWORD; ++offset) {
 			struct object_id oid;
@@ -648,9 +650,6 @@ static void show_objects_for_type(
 
 			offset += ewah_bit_ctz64(word >> offset);
 
-			if (pos + offset < bitmap_git->reuse_objects)
-				continue;
-
 			entry = &bitmap_git->pack->revindex[pos + offset];
 			nth_packed_object_oid(&oid, bitmap_git->pack, entry->nr);
 
@@ -659,9 +658,6 @@ static void show_objects_for_type(
 
 			show_reach(&oid, object_type, 0, hash, bitmap_git->pack, entry->offset);
 		}
-
-		pos += BITS_IN_EWORD;
-		i++;
 	}
 }
 
-- 
2.23.0.46.gd213b4aca1.dirty
Previous: Christian CouderNext: Jonathan Tan
Message 13 of 31 in “Rewrite packfile reuse code”
  1. 00/10 Rewrite packfile reuse codeChristian Couder, Sep 13, 2019
  2. 01/10 builtin/pack-objects: report reused packfile objectsChristian Couder, Sep 13, 2019
  3. 02/10 packfile: expose get_delta_base()Christian Couder, Sep 13, 2019
  4. 06/10 pack-bitmap: introduce bitmap_walk_contains()Christian Couder, Sep 13, 2019
  5. 04/10 ewah/bitmap: always allocate 2 more wordsChristian Couder, Sep 13, 2019
  6. Jonathan TanOct 10, 2019
  7. Christian CouderOct 11, 2019
  8. Jeff KingOct 11, 2019
  9. 07/10 csum-file: introduce hashfile_total()Christian Couder, Sep 13, 2019
  10. 08/10 pack-objects: introduce pack.allowPackReuseChristian Couder, Sep 13, 2019
  11. Junio C HamanoSep 13, 2019
  12. 03/10 ewah/bitmap: introduce bitmap_word_alloc()Christian Couder, Sep 13, 2019
  13. 05/10 pack-bitmap: don't rely on bitmap_git->reuse_objectsChristian Couder, Sep 13, 2019
  14. Jonathan TanOct 10, 2019
  15. Christian CouderOct 11, 2019
  16. 10/10 pack-objects: improve partial packfile reuseChristian Couder, Sep 13, 2019
  17. Junio C HamanoSep 13, 2019
  18. Jeff KingSep 14, 2019
  19. Junio C HamanoSep 14, 2019
  20. Jeff KingOct 2, 2019
  21. Junio C HamanoOct 3, 2019
  22. Christian CouderOct 3, 2019
  23. Jonathan TanOct 10, 2019
  24. Christian CouderOct 11, 2019
  25. Jeff KingOct 11, 2019
  26. Jonathan TanOct 11, 2019
  27. Junio C HamanoOct 12, 2019
  28. Jeff KingOct 13, 2019
  29. Junio C HamanoOct 17, 2019
  30. Jeff KingOct 17, 2019
  31. 09/10 builtin/pack-objects: introduce obj_is_packed()Christian Couder, Sep 13, 2019

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