summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--builtin/pack-objects.c31
-rwxr-xr-xt/perf/p5310-pack-bitmaps.sh14
-rwxr-xr-xt/t5310-pack-bitmaps.sh12
3 files changed, 49 insertions, 8 deletions
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 19668d3..d48c290 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -67,7 +67,8 @@ static struct packed_git *reuse_packfile;
static uint32_t reuse_packfile_objects;
static off_t reuse_packfile_offset;
-static int use_bitmap_index = 1;
+static int use_bitmap_index_default = 1;
+static int use_bitmap_index = -1;
static int write_bitmap_index;
static uint16_t write_bitmap_options;
@@ -2274,7 +2275,7 @@ static int git_pack_config(const char *k, const char *v, void *cb)
write_bitmap_options &= ~BITMAP_OPT_HASH_CACHE;
}
if (!strcmp(k, "pack.usebitmaps")) {
- use_bitmap_index = git_config_bool(k, v);
+ use_bitmap_index_default = git_config_bool(k, v);
return 0;
}
if (!strcmp(k, "pack.threads")) {
@@ -2523,13 +2524,13 @@ static void loosen_unused_packed_objects(struct rev_info *revs)
}
/*
- * This tracks any options which a reader of the pack might
- * not understand, and which would therefore prevent blind reuse
- * of what we have on disk.
+ * This tracks any options which pack-reuse code expects to be on, or which a
+ * reader of the pack might not understand, and which would therefore prevent
+ * blind reuse of what we have on disk.
*/
static int pack_options_allow_reuse(void)
{
- return allow_ofs_delta;
+ return pack_to_stdout && allow_ofs_delta;
}
static int get_object_list_from_bitmap(struct rev_info *revs)
@@ -2822,7 +2823,23 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
if (!rev_list_all || !rev_list_reflog || !rev_list_index)
unpack_unreachable_expiration = 0;
- if (!use_internal_rev_list || !pack_to_stdout || is_repository_shallow())
+ /*
+ * "soft" reasons not to use bitmaps - for on-disk repack by default we want
+ *
+ * - to produce good pack (with bitmap index not-yet-packed objects are
+ * packed in suboptimal order).
+ *
+ * - to use more robust pack-generation codepath (avoiding possible
+ * bugs in bitmap code and possible bitmap index corruption).
+ */
+ if (!pack_to_stdout)
+ use_bitmap_index_default = 0;
+
+ if (use_bitmap_index < 0)
+ use_bitmap_index = use_bitmap_index_default;
+
+ /* "hard" reasons not to use bitmaps; these just won't work at all */
+ if (!use_internal_rev_list || (!pack_to_stdout && write_bitmap_index) || is_repository_shallow())
use_bitmap_index = 0;
if (pack_to_stdout || !rev_list_all)
diff --git a/t/perf/p5310-pack-bitmaps.sh b/t/perf/p5310-pack-bitmaps.sh
index de2a224..bb91dbb 100755
--- a/t/perf/p5310-pack-bitmaps.sh
+++ b/t/perf/p5310-pack-bitmaps.sh
@@ -32,6 +32,14 @@ test_perf 'simulated fetch' '
} | git pack-objects --revs --stdout >/dev/null
'
+test_perf 'pack to file' '
+ git pack-objects --all pack1 </dev/null >/dev/null
+'
+
+test_perf 'pack to file (bitmap)' '
+ git pack-objects --use-bitmap-index --all pack1b </dev/null >/dev/null
+'
+
test_expect_success 'create partial bitmap state' '
# pick a commit to represent the repo tip in the past
cutoff=$(git rev-list HEAD~100 -1) &&
@@ -53,8 +61,12 @@ test_expect_success 'create partial bitmap state' '
git update-ref HEAD $orig_tip
'
-test_perf 'partial bitmap' '
+test_perf 'clone (partial bitmap)' '
git pack-objects --stdout --all </dev/null >/dev/null
'
+test_perf 'pack to file (partial bitmap)' '
+ git pack-objects --use-bitmap-index --all pack2b </dev/null >/dev/null
+'
+
test_done
diff --git a/t/t5310-pack-bitmaps.sh b/t/t5310-pack-bitmaps.sh
index a278d30..9602e9a 100755
--- a/t/t5310-pack-bitmaps.sh
+++ b/t/t5310-pack-bitmaps.sh
@@ -196,6 +196,18 @@ test_expect_success 'pack-objects respects --local (non-local bitmapped pack)' '
! has_any packbitmap.objects 3b.objects
'
+test_expect_success 'pack-objects to file can use bitmap' '
+ # make sure we still have 1 bitmap index from previous tests
+ ls .git/objects/pack/ | grep bitmap >output &&
+ test_line_count = 1 output &&
+ # verify equivalent packs are generated with/without using bitmap index
+ packasha1=$(git pack-objects --no-use-bitmap-index --all packa </dev/null) &&
+ packbsha1=$(git pack-objects --use-bitmap-index --all packb </dev/null) &&
+ list_packed_objects <packa-$packasha1.idx >packa.objects &&
+ list_packed_objects <packb-$packbsha1.idx >packb.objects &&
+ test_cmp packa.objects packb.objects
+'
+
test_expect_success 'full repack, reusing previous bitmaps' '
git repack -ad &&
ls .git/objects/pack/ | grep bitmap >output &&