--not-so-strict only checks if all links from objects in the pack
point to real objects (either in current repo, or from the pack
itself). It's like check_everything_connected() except that:
- it does not follow DAG in order
- it can detect incomplete object islands
- it seems to be faster than "rev-list --objects --all"
On my box, "rev-list --objects --all" takes 34 seconds. index-pack takes
215.25user 8.42system 1:32.31elapsed 242%CPU (0avgtext+0avgdata 1357328maxresident)k
0inputs+1421016outputs (0major+1222987minor)pagefaults 0swaps
And index-pack --not-so-strict takes
pack 96a4e3befa40bf38eddc2d7c99246a59af4ad55d
229.75user 11.31system 1:42.50elapsed 235%CPU (0avgtext+0avgdata 1876816maxresident)k
0inputs+1421016outputs (0major+1307989minor)pagefaults 0swaps
The overhead is about 10 seconds, just 1/3 of rev-list, which makes it
in a better position to replace check_everything_connected(). If this
holds true for general case, it could reduce fetch time by a little bit.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
Documentation/git-index-pack.txt | 3 +++
Documentation/git-unpack-objects.txt | 4 ++++
builtin/index-pack.c | 7 ++++++-
builtin/unpack-objects.c | 9 +++++++--
4 files changed, 20 insertions(+), 3 deletions(-)
diff --git a/Documentation/git-index-pack.txt b/Documentation/git-index-pack.txt
index bde8eec..51af7be 100644
--- a/Documentation/git-index-pack.txt
+++ b/Documentation/git-index-pack.txt
@@ -74,6 +74,9 @@ OPTIONS
--strict::
Die, if the pack contains broken objects or links.
+--not-so-strict::
+ Die if the pack contains broken links. For internal use only.
+
--threads=<n>::
Specifies the number of threads to spawn when resolving
deltas. This requires that index-pack be compiled with
diff --git a/Documentation/git-unpack-objects.txt b/Documentation/git-unpack-objects.txt
index ff23494..14b6018 100644
--- a/Documentation/git-unpack-objects.txt
+++ b/Documentation/git-unpack-objects.txt
@@ -44,6 +44,10 @@ OPTIONS
--strict::
Don't write objects with broken content or links.
+--not-so-strict::
+ Don't write objects with broken links. For internal
+ use only.
+
GIT
---
Part of the linkgit:git[1] suite
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index 1fd56d9..5d28a1b 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -77,6 +77,7 @@ static int nr_threads;
static int from_stdin;
static int strict;
+static int do_fsck_object;
static int verbose;
static int show_stat;
@@ -756,7 +757,8 @@ static void sha1_object(const void *data, struct object_entry *obj_entry,
obj = parse_object_buffer(sha1, type, size, buf, &eaten);
if (!obj)
die(_("invalid %s"), typename(type));
- if (fsck_object(obj, 1, fsck_error_function))
+ if (do_fsck_object &&
+ fsck_object(obj, 1, fsck_error_function))
die(_("Error in object"));
if (fsck_walk(obj, mark_link, NULL))
die(_("Not all child objects of %s are reachable"), sha1_to_hex(obj->sha1));
@@ -1511,6 +1513,9 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
fix_thin_pack = 1;
} else if (!strcmp(arg, "--strict")) {
strict = 1;
+ do_fsck_object = 1;
+ } else if (!strcmp(arg, "--not-so-strict")) {
+ strict = 1;
} else if (!strcmp(arg, "--verify")) {
verify = 1;
} else if (!strcmp(arg, "--verify-stat")) {
diff --git a/builtin/unpack-objects.c b/builtin/unpack-objects.c
index 2217d7b..dd0518b 100644
--- a/builtin/unpack-objects.c
+++ b/builtin/unpack-objects.c
@@ -12,7 +12,7 @@
#include "decorate.h"
#include "fsck.h"
-static int dry_run, quiet, recover, has_errors, strict;
+static int dry_run, quiet, recover, has_errors, strict, do_fsck_object;
static const char unpack_usage[] = "git unpack-objects [-n] [-q] [-r] [--strict] < pack-file";
/* We always read in 4kB chunks. */
@@ -198,7 +198,7 @@ static int check_object(struct object *obj, int type, void *data)
return 0;
}
- if (fsck_object(obj, 1, fsck_error_function))
+ if (do_fsck_object && fsck_object(obj, 1, fsck_error_function))
die("Error in object");
if (fsck_walk(obj, check_object, NULL))
die("Error on reachable objects of %s", sha1_to_hex(obj->sha1));
@@ -520,6 +520,11 @@ int cmd_unpack_objects(int argc, const char **argv, const char *prefix)
continue;
}
if (!strcmp(arg, "--strict")) {
+ do_fsck_object = 1;
+ strict = 1;
+ continue;
+ }
+ if (!strcmp(arg, "--not-so-strict")) {
strict = 1;
continue;
}
--
1.8.2.83.gc99314b
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