From: Derrick Stolee <stolee@gmail.com>
To: git@vger.kernel.org
Cc: sbeller@google.com, dstolee@microsoft.com, avarab@gmail.com,
jrnieder@gmail.com, jonathantanmy@google.com,
mfick@codeaurora.org
Subject: [PATCH 18/23] midx: use midx in abbreviation calculations
Date: Thu, 7 Jun 2018 10:03:33 -0400 [thread overview]
Message-ID: <20180607140338.32440-19-dstolee@microsoft.com> (raw)
In-Reply-To: <20180607140338.32440-1-dstolee@microsoft.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
---
midx.c | 11 ++++++++
midx.h | 3 +++
packfile.c | 6 +++++
packfile.h | 1 +
sha1-name.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++
t/t5319-midx.sh | 3 ++-
6 files changed, 93 insertions(+), 1 deletion(-)
diff --git a/midx.c b/midx.c
index 6eca8f1b12..25d8142c2a 100644
--- a/midx.c
+++ b/midx.c
@@ -203,6 +203,17 @@ int bsearch_midx(const struct object_id *oid, struct midxed_git *m, uint32_t *re
MIDX_HASH_LEN, result);
}
+struct object_id *nth_midxed_object_oid(struct object_id *oid,
+ struct midxed_git *m,
+ uint32_t n)
+{
+ if (n >= m->num_objects)
+ return NULL;
+
+ hashcpy(oid->hash, m->chunk_oid_lookup + m->hash_len * n);
+ return oid;
+}
+
static off_t nth_midxed_offset(struct midxed_git *m, uint32_t pos)
{
const unsigned char *offset_data;
diff --git a/midx.h b/midx.h
index 0c66812229..497bdcc77c 100644
--- a/midx.h
+++ b/midx.h
@@ -9,6 +9,9 @@
struct midxed_git *load_midxed_git(const char *object_dir);
int bsearch_midx(const struct object_id *oid, struct midxed_git *m, uint32_t *result);
+struct object_id *nth_midxed_object_oid(struct object_id *oid,
+ struct midxed_git *m,
+ uint32_t n);
int fill_midx_entry(const struct object_id *oid, struct pack_entry *e, struct midxed_git *m);
int prepare_midxed_git_one(struct repository *r, const char *object_dir);
diff --git a/packfile.c b/packfile.c
index 73f8cc28ee..638e113972 100644
--- a/packfile.c
+++ b/packfile.c
@@ -919,6 +919,12 @@ struct packed_git *get_packed_git(struct repository *r)
return r->objects->packed_git;
}
+struct midxed_git *get_midxed_git(struct repository *r)
+{
+ prepare_packed_git(r);
+ return r->objects->midxed_git;
+}
+
struct list_head *get_packed_git_mru(struct repository *r)
{
prepare_packed_git(r);
diff --git a/packfile.h b/packfile.h
index e0a38aba93..01e14b93fd 100644
--- a/packfile.h
+++ b/packfile.h
@@ -39,6 +39,7 @@ extern void install_packed_git(struct repository *r, struct packed_git *pack);
struct packed_git *get_packed_git(struct repository *r);
struct list_head *get_packed_git_mru(struct repository *r);
+struct midxed_git *get_midxed_git(struct repository *r);
/*
* Give a rough count of objects in the repository. This sacrifices accuracy
diff --git a/sha1-name.c b/sha1-name.c
index 60d9ef3c7e..d975a186c9 100644
--- a/sha1-name.c
+++ b/sha1-name.c
@@ -12,6 +12,7 @@
#include "packfile.h"
#include "object-store.h"
#include "repository.h"
+#include "midx.h"
static int get_oid_oneline(const char *, struct object_id *, struct commit_list *);
@@ -149,6 +150,32 @@ static int match_sha(unsigned len, const unsigned char *a, const unsigned char *
return 1;
}
+static void unique_in_midx(struct midxed_git *m,
+ struct disambiguate_state *ds)
+{
+ uint32_t num, i, first = 0;
+ const struct object_id *current = NULL;
+ num = m->num_objects;
+
+ if (!num)
+ return;
+
+ bsearch_midx(&ds->bin_pfx, m, &first);
+
+ /*
+ * At this point, "first" is the location of the lowest object
+ * with an object name that could match "bin_pfx". See if we have
+ * 0, 1 or more objects that actually match(es).
+ */
+ for (i = first; i < num && !ds->ambiguous; i++) {
+ struct object_id oid;
+ current = nth_midxed_object_oid(&oid, m, i);
+ if (!match_sha(ds->len, ds->bin_pfx.hash, current->hash))
+ break;
+ update_candidates(ds, current);
+ }
+}
+
static void unique_in_pack(struct packed_git *p,
struct disambiguate_state *ds)
{
@@ -177,8 +204,12 @@ static void unique_in_pack(struct packed_git *p,
static void find_short_packed_object(struct disambiguate_state *ds)
{
+ struct midxed_git *m;
struct packed_git *p;
+ for (m = get_midxed_git(the_repository); m && !ds->ambiguous;
+ m = m->next)
+ unique_in_midx(m, ds);
for (p = get_packed_git(the_repository); p && !ds->ambiguous;
p = p->next)
unique_in_pack(p, ds);
@@ -527,6 +558,42 @@ static int extend_abbrev_len(const struct object_id *oid, void *cb_data)
return 0;
}
+static void find_abbrev_len_for_midx(struct midxed_git *m,
+ struct min_abbrev_data *mad)
+{
+ int match = 0;
+ uint32_t num, first = 0;
+ struct object_id oid;
+ const struct object_id *mad_oid;
+
+ if (!m->num_objects)
+ return;
+
+ num = m->num_objects;
+ mad_oid = mad->oid;
+ match = bsearch_midx(mad_oid, m, &first);
+
+ /*
+ * first is now the position in the packfile where we would insert
+ * mad->hash if it does not exist (or the position of mad->hash if
+ * it does exist). Hence, we consider a maximum of two objects
+ * nearby for the abbreviation length.
+ */
+ mad->init_len = 0;
+ if (!match) {
+ if (nth_midxed_object_oid(&oid, m, first))
+ extend_abbrev_len(&oid, mad);
+ } else if (first < num - 1) {
+ if (nth_midxed_object_oid(&oid, m, first + 1))
+ extend_abbrev_len(&oid, mad);
+ }
+ if (first > 0) {
+ if (nth_midxed_object_oid(&oid, m, first - 1))
+ extend_abbrev_len(&oid, mad);
+ }
+ mad->init_len = mad->cur_len;
+}
+
static void find_abbrev_len_for_pack(struct packed_git *p,
struct min_abbrev_data *mad)
{
@@ -565,8 +632,11 @@ static void find_abbrev_len_for_pack(struct packed_git *p,
static void find_abbrev_len_packed(struct min_abbrev_data *mad)
{
+ struct midxed_git *m;
struct packed_git *p;
+ for (m = get_midxed_git(the_repository); m; m = m->next)
+ find_abbrev_len_for_midx(m, mad);
for (p = get_packed_git(the_repository); p; p = p->next)
find_abbrev_len_for_pack(p, mad);
}
diff --git a/t/t5319-midx.sh b/t/t5319-midx.sh
index 1a50987778..e3873da7d6 100755
--- a/t/t5319-midx.sh
+++ b/t/t5319-midx.sh
@@ -94,7 +94,8 @@ compare_results_with_midx() {
MSG=$1
test_expect_success "check normal git operations: $MSG" '
midx_git_two_modes "rev-list --objects --all" &&
- midx_git_two_modes "log --raw"
+ midx_git_two_modes "log --raw" &&
+ midx_git_two_modes "log --oneline"
'
}
--
2.18.0.rc1
next prev parent reply other threads:[~2018-06-07 14:04 UTC|newest]
Thread overview: 192+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-07 14:03 [PATCH 00/23] Multi-pack-index (MIDX) Derrick Stolee
2018-06-07 14:03 ` [PATCH 01/23] midx: add design document Derrick Stolee
2018-06-11 19:04 ` Stefan Beller
2018-06-18 18:48 ` Derrick Stolee
2018-06-07 14:03 ` [PATCH 02/23] midx: add midx format details to pack-format.txt Derrick Stolee
2018-06-11 19:19 ` Stefan Beller
2018-06-18 19:01 ` Derrick Stolee
2018-06-18 19:41 ` Stefan Beller
2018-06-07 14:03 ` [PATCH 03/23] midx: add midx builtin Derrick Stolee
2018-06-07 17:20 ` Duy Nguyen
2018-06-18 19:23 ` Derrick Stolee
2018-06-11 21:02 ` Stefan Beller
2018-06-18 19:40 ` Derrick Stolee
2018-06-18 19:55 ` Stefan Beller
2018-06-18 19:58 ` Derrick Stolee
2018-06-07 14:03 ` [PATCH 04/23] midx: add 'write' subcommand and basic wiring Derrick Stolee
2018-06-07 17:27 ` Duy Nguyen
2018-06-07 14:03 ` [PATCH 05/23] midx: write header information to lockfile Derrick Stolee
2018-06-07 17:35 ` Duy Nguyen
2018-06-12 15:00 ` Duy Nguyen
2018-06-19 12:54 ` Derrick Stolee
2018-06-19 14:59 ` Duy Nguyen
2018-06-19 15:24 ` Derrick Stolee
2018-06-07 14:03 ` [PATCH 06/23] midx: struct midxed_git and 'read' subcommand Derrick Stolee
2018-06-07 17:54 ` Duy Nguyen
2018-06-20 13:13 ` Derrick Stolee
2018-06-07 18:31 ` Duy Nguyen
2018-06-20 13:33 ` Derrick Stolee
2018-06-20 15:07 ` Duy Nguyen
2018-06-20 16:39 ` Derrick Stolee
2018-06-07 14:03 ` [PATCH 07/23] midx: expand test data Derrick Stolee
2018-06-07 14:03 ` [PATCH 08/23] midx: read packfiles from pack directory Derrick Stolee
2018-06-07 18:03 ` Duy Nguyen
2018-06-20 16:33 ` [PATCH] packfile: generalize pack directory list Derrick Stolee
2018-06-07 14:03 ` [PATCH 09/23] midx: write pack names in chunk Derrick Stolee
2018-06-07 18:26 ` Duy Nguyen
2018-06-21 15:25 ` Derrick Stolee
2018-06-21 17:38 ` Junio C Hamano
2018-06-22 18:25 ` Derrick Stolee
2018-06-22 18:31 ` Junio C Hamano
2018-06-22 18:32 ` Derrick Stolee
2018-06-07 14:03 ` [PATCH 10/23] midx: write a lookup into the pack names chunk Derrick Stolee
2018-06-09 16:43 ` Duy Nguyen
2018-06-21 17:23 ` Derrick Stolee
2018-06-07 14:03 ` [PATCH 11/23] midx: sort and deduplicate objects from packfiles Derrick Stolee
2018-06-09 17:07 ` Duy Nguyen
2018-06-21 17:54 ` Derrick Stolee
2018-06-07 14:03 ` [PATCH 12/23] midx: write object ids in a chunk Derrick Stolee
2018-06-09 17:25 ` Duy Nguyen
2018-06-07 14:03 ` [PATCH 13/23] midx: write object id fanout chunk Derrick Stolee
2018-06-09 17:28 ` Duy Nguyen
2018-06-21 19:49 ` Derrick Stolee
2018-06-07 14:03 ` [PATCH 14/23] midx: write object offsets Derrick Stolee
2018-06-09 17:41 ` Duy Nguyen
2018-06-07 14:03 ` [PATCH 15/23] midx: create core.midx config setting Derrick Stolee
2018-06-07 14:03 ` [PATCH 16/23] midx: prepare midxed_git struct Derrick Stolee
2018-06-09 17:47 ` Duy Nguyen
2018-06-07 14:03 ` [PATCH 17/23] midx: read objects from multi-pack-index Derrick Stolee
2018-06-09 17:56 ` Duy Nguyen
2018-06-21 20:03 ` Derrick Stolee
2018-06-07 14:03 ` Derrick Stolee [this message]
2018-06-09 18:01 ` [PATCH 18/23] midx: use midx in abbreviation calculations Duy Nguyen
2018-06-22 18:38 ` Derrick Stolee
2018-06-07 14:03 ` [PATCH 19/23] midx: use existing midx when writing new one Derrick Stolee
2018-06-07 14:03 ` [PATCH 20/23] midx: use midx in approximate_object_count Derrick Stolee
2018-06-09 18:03 ` Duy Nguyen
2018-06-22 18:39 ` Derrick Stolee
2018-06-07 14:03 ` [PATCH 21/23] midx: prevent duplicate packfile loads Derrick Stolee
2018-06-09 18:05 ` Duy Nguyen
2018-06-07 14:03 ` [PATCH 22/23] midx: use midx to find ref-deltas Derrick Stolee
2018-06-07 14:03 ` [PATCH 23/23] midx: clear midx on repack Derrick Stolee
2018-06-09 18:13 ` Duy Nguyen
2018-06-22 18:44 ` Derrick Stolee
2018-06-07 14:06 ` [PATCH 00/23] Multi-pack-index (MIDX) Derrick Stolee
2018-06-07 14:45 ` Ævar Arnfjörð Bjarmason
2018-06-07 14:54 ` Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 00/24] " Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 01/24] multi-pack-index: add design document Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 02/24] multi-pack-index: add format details Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 03/24] multi-pack-index: add builtin Derrick Stolee
2018-06-25 19:15 ` Junio C Hamano
2018-06-25 14:34 ` [PATCH v2 04/24] multi-pack-index: add 'write' verb Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 05/24] midx: write header information to lockfile Derrick Stolee
2018-06-25 19:19 ` Junio C Hamano
2018-07-05 19:13 ` Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 06/24] multi-pack-index: load into memory Derrick Stolee
2018-06-25 19:38 ` Junio C Hamano
2018-07-05 14:19 ` Derrick Stolee
2018-07-05 18:58 ` Eric Sunshine
2018-07-06 19:20 ` Junio C Hamano
2018-06-25 14:34 ` [PATCH v2 07/24] multi-pack-index: expand test data Derrick Stolee
2018-06-25 19:45 ` Junio C Hamano
2018-06-25 14:34 ` [PATCH v2 08/24] packfile: generalize pack directory list Derrick Stolee
2018-06-25 19:57 ` Junio C Hamano
2018-06-25 14:34 ` [PATCH v2 09/24] multi-pack-index: read packfile list Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 10/24] multi-pack-index: write pack names in chunk Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 11/24] midx: read pack names into array Derrick Stolee
2018-06-25 23:52 ` Eric Sunshine
2018-06-25 14:34 ` [PATCH v2 12/24] midx: sort and deduplicate objects from packfiles Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 13/24] midx: write object ids in a chunk Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 14/24] midx: write object id fanout chunk Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 15/24] midx: write object offsets Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 16/24] config: create core.multiPackIndex setting Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 17/24] midx: prepare midxed_git struct Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 18/24] midx: read objects from multi-pack-index Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 19/24] midx: use midx in abbreviation calculations Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 20/24] midx: use existing midx when writing new one Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 21/24] midx: use midx in approximate_object_count Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 22/24] midx: prevent duplicate packfile loads Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 23/24] packfile: skip loading index if in multi-pack-index Derrick Stolee
2018-06-25 14:34 ` [PATCH v2 24/24] midx: clear midx on repack Derrick Stolee
2018-07-06 0:52 ` [PATCH v3 00/24] Multi-pack-index (MIDX) Derrick Stolee
2018-07-06 0:52 ` [PATCH v3 01/24] multi-pack-index: add design document Derrick Stolee
2018-07-06 0:52 ` [PATCH v3 02/24] multi-pack-index: add format details Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 03/24] multi-pack-index: add builtin Derrick Stolee
2018-07-06 3:54 ` Eric Sunshine
2018-07-06 0:53 ` [PATCH v3 04/24] multi-pack-index: add 'write' verb Derrick Stolee
2018-07-06 4:07 ` Eric Sunshine
2018-07-06 0:53 ` [PATCH v3 05/24] midx: write header information to lockfile Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 06/24] multi-pack-index: load into memory Derrick Stolee
2018-07-06 4:19 ` Eric Sunshine
2018-07-06 5:18 ` Eric Sunshine
2018-07-09 19:08 ` Junio C Hamano
2018-07-12 16:06 ` Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 07/24] multi-pack-index: expand test data Derrick Stolee
2018-07-06 4:36 ` Eric Sunshine
2018-07-06 5:20 ` Eric Sunshine
2018-07-12 14:10 ` Derrick Stolee
2018-07-12 18:02 ` Eric Sunshine
2018-07-12 18:06 ` Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 08/24] packfile: generalize pack directory list Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 09/24] multi-pack-index: read packfile list Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 10/24] multi-pack-index: write pack names in chunk Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 11/24] midx: read pack names into array Derrick Stolee
2018-07-06 4:58 ` Eric Sunshine
2018-07-06 0:53 ` [PATCH v3 12/24] midx: sort and deduplicate objects from packfiles Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 13/24] midx: write object ids in a chunk Derrick Stolee
2018-07-06 5:04 ` Eric Sunshine
2018-07-06 0:53 ` [PATCH v3 14/24] midx: write object id fanout chunk Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 15/24] midx: write object offsets Derrick Stolee
2018-07-06 5:27 ` Eric Sunshine
2018-07-12 16:33 ` Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 16/24] config: create core.multiPackIndex setting Derrick Stolee
2018-07-06 5:39 ` Eric Sunshine
2018-07-12 13:19 ` Derrick Stolee
2018-07-12 16:30 ` Derrick Stolee
2018-07-11 9:48 ` SZEDER Gábor
2018-07-12 13:01 ` Derrick Stolee
2018-07-12 13:31 ` SZEDER Gábor
2018-07-12 15:40 ` Derrick Stolee
2018-07-12 17:29 ` Junio C Hamano
2018-07-06 0:53 ` [PATCH v3 17/24] midx: prepare midxed_git struct Derrick Stolee
2018-07-06 5:41 ` Eric Sunshine
2018-07-06 0:53 ` [PATCH v3 18/24] midx: read objects from multi-pack-index Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 19/24] midx: use midx in abbreviation calculations Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 20/24] midx: use existing midx when writing new one Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 21/24] midx: use midx in approximate_object_count Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 22/24] midx: prevent duplicate packfile loads Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 23/24] packfile: skip loading index if in multi-pack-index Derrick Stolee
2018-07-06 0:53 ` [PATCH v3 24/24] midx: clear midx on repack Derrick Stolee
2018-07-06 5:52 ` Eric Sunshine
2018-07-12 19:39 ` [PATCH v4 00/23] Multi-pack-index (MIDX) Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 01/23] multi-pack-index: add design document Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 02/23] multi-pack-index: add format details Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 03/23] multi-pack-index: add builtin Derrick Stolee
2018-07-20 18:22 ` Junio C Hamano
2018-07-20 22:15 ` brian m. carlson
2018-07-20 22:28 ` Junio C Hamano
2018-07-12 19:39 ` [PATCH v4 04/23] multi-pack-index: add 'write' verb Derrick Stolee
2018-07-12 22:56 ` Eric Sunshine
2018-07-12 19:39 ` [PATCH v4 05/23] midx: write header information to lockfile Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 06/23] multi-pack-index: load into memory Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 07/23] t5319: expand test data Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 08/23] packfile: generalize pack directory list Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 09/23] multi-pack-index: read packfile list Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 10/23] multi-pack-index: write pack names in chunk Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 11/23] midx: read pack names into array Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 12/23] midx: sort and deduplicate objects from packfiles Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 13/23] midx: write object ids in a chunk Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 14/23] midx: write object id fanout chunk Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 15/23] midx: write object offsets Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 16/23] config: create core.multiPackIndex setting Derrick Stolee
2018-07-12 21:05 ` Junio C Hamano
2018-07-13 0:50 ` Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 17/23] midx: read objects from multi-pack-index Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 18/23] midx: use midx in abbreviation calculations Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 19/23] midx: use existing midx when writing new one Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 20/23] midx: use midx in approximate_object_count Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 21/23] midx: prevent duplicate packfile loads Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 22/23] packfile: skip loading index if in multi-pack-index Derrick Stolee
2018-07-12 19:39 ` [PATCH v4 23/23] midx: clear midx on repack Derrick Stolee
2018-07-12 21:11 ` [PATCH v4 00/23] Multi-pack-index (MIDX) Junio C Hamano
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