From: Patrick Steinhardt <ps@pks.im>
To: git@vger.kernel.org
Cc: "Jeff King" <peff@peff.net>,
"Felipe Contreras" <felipe.contreras@gmail.com>,
"SZEDER Gábor" <szeder.dev@gmail.com>,
"Chris Torek" <chris.torek@gmail.com>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Junio C Hamano" <gitster@pobox.com>,
"Taylor Blau" <me@ttaylorr.com>
Subject: [PATCH v4 5/6] commit-graph: split out function to search commit position
Date: Thu, 5 Aug 2021 13:25:41 +0200 [thread overview]
Message-ID: <e33cd51ebf9751a156198ff489304c897923b64c.1628162156.git.ps@pks.im> (raw)
In-Reply-To: <cover.1628162156.git.ps@pks.im>
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The function `find_commit_in_graph()` assumes that the caller has passed
an object which was already determined to be a commit given that it will
access the commit's graph position, which is stored in a commit slab. In
a subsequent patch, we want to search for an object ID though without
knowing whether it is a commit or not, which is not currently possible.
Split out the logic to search the commit graph for a given object ID to
prepare for this change. This commit also renames the function to
`find_commit_pos_in_graph()`, which more accurately reflects what this
function does. Furthermore, in order to allow for the searched object ID
to be const, we need to adjust `bsearch_graph()`'s signature to accept a
constant object ID as input, too.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
commit-graph.c | 55 +++++++++++++++++++++++++++-----------------------
1 file changed, 30 insertions(+), 25 deletions(-)
diff --git a/commit-graph.c b/commit-graph.c
index 3860a0d847..8c4c7262c8 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -723,7 +723,7 @@ void close_commit_graph(struct raw_object_store *o)
o->commit_graph = NULL;
}
-static int bsearch_graph(struct commit_graph *g, struct object_id *oid, uint32_t *pos)
+static int bsearch_graph(struct commit_graph *g, const struct object_id *oid, uint32_t *pos)
{
return bsearch_hash(oid->hash, g->chunk_oid_fanout,
g->chunk_oid_lookup, g->hash_len, pos);
@@ -864,25 +864,30 @@ static int fill_commit_in_graph(struct repository *r,
return 1;
}
-static int find_commit_in_graph(struct commit *item, struct commit_graph *g, uint32_t *pos)
+static int search_commit_pos_in_graph(const struct object_id *id, struct commit_graph *g, uint32_t *pos)
+{
+ struct commit_graph *cur_g = g;
+ uint32_t lex_index;
+
+ while (cur_g && !bsearch_graph(cur_g, id, &lex_index))
+ cur_g = cur_g->base_graph;
+
+ if (cur_g) {
+ *pos = lex_index + cur_g->num_commits_in_base;
+ return 1;
+ }
+
+ return 0;
+}
+
+static int find_commit_pos_in_graph(struct commit *item, struct commit_graph *g, uint32_t *pos)
{
uint32_t graph_pos = commit_graph_position(item);
if (graph_pos != COMMIT_NOT_FROM_GRAPH) {
*pos = graph_pos;
return 1;
} else {
- struct commit_graph *cur_g = g;
- uint32_t lex_index;
-
- while (cur_g && !bsearch_graph(cur_g, &(item->object.oid), &lex_index))
- cur_g = cur_g->base_graph;
-
- if (cur_g) {
- *pos = lex_index + cur_g->num_commits_in_base;
- return 1;
- }
-
- return 0;
+ return search_commit_pos_in_graph(&item->object.oid, g, pos);
}
}
@@ -895,7 +900,7 @@ static int parse_commit_in_graph_one(struct repository *r,
if (item->object.parsed)
return 1;
- if (find_commit_in_graph(item, g, &pos))
+ if (find_commit_pos_in_graph(item, g, &pos))
return fill_commit_in_graph(r, item, g, pos);
return 0;
@@ -921,7 +926,7 @@ void load_commit_graph_info(struct repository *r, struct commit *item)
uint32_t pos;
if (!prepare_commit_graph(r))
return;
- if (find_commit_in_graph(item, r->objects->commit_graph, &pos))
+ if (find_commit_pos_in_graph(item, r->objects->commit_graph, &pos))
fill_commit_graph_info(item, r->objects->commit_graph, pos);
}
@@ -1091,9 +1096,9 @@ static int write_graph_chunk_data(struct hashfile *f,
edge_value += ctx->new_num_commits_in_base;
else if (ctx->new_base_graph) {
uint32_t pos;
- if (find_commit_in_graph(parent->item,
- ctx->new_base_graph,
- &pos))
+ if (find_commit_pos_in_graph(parent->item,
+ ctx->new_base_graph,
+ &pos))
edge_value = pos;
}
@@ -1122,9 +1127,9 @@ static int write_graph_chunk_data(struct hashfile *f,
edge_value += ctx->new_num_commits_in_base;
else if (ctx->new_base_graph) {
uint32_t pos;
- if (find_commit_in_graph(parent->item,
- ctx->new_base_graph,
- &pos))
+ if (find_commit_pos_in_graph(parent->item,
+ ctx->new_base_graph,
+ &pos))
edge_value = pos;
}
@@ -1235,9 +1240,9 @@ static int write_graph_chunk_extra_edges(struct hashfile *f,
edge_value += ctx->new_num_commits_in_base;
else if (ctx->new_base_graph) {
uint32_t pos;
- if (find_commit_in_graph(parent->item,
- ctx->new_base_graph,
- &pos))
+ if (find_commit_pos_in_graph(parent->item,
+ ctx->new_base_graph,
+ &pos))
edge_value = pos;
}
--
2.32.0
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next prev parent reply other threads:[~2021-08-05 11:25 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-28 5:33 [PATCH v2 0/3] Speed up connectivity checks via bitmaps Patrick Steinhardt
2021-06-28 5:33 ` [PATCH v2 1/3] p5400: add perf tests for git-receive-pack(1) Patrick Steinhardt
2021-06-28 7:49 ` Ævar Arnfjörð Bjarmason
2021-06-29 6:18 ` Patrick Steinhardt
2021-06-29 12:09 ` Ævar Arnfjörð Bjarmason
2021-06-28 5:33 ` [PATCH v2 2/3] receive-pack: skip connectivity checks on delete-only commands Patrick Steinhardt
2021-06-28 8:00 ` Ævar Arnfjörð Bjarmason
2021-06-28 8:06 ` Ævar Arnfjörð Bjarmason
2021-06-29 6:26 ` Patrick Steinhardt
2021-06-30 1:31 ` Jeff King
2021-06-30 1:35 ` Jeff King
2021-06-30 13:52 ` Patrick Steinhardt
2021-06-28 5:33 ` [PATCH v2 3/3] connected: implement connectivity check using bitmaps Patrick Steinhardt
2021-06-28 20:23 ` Taylor Blau
2021-06-29 22:44 ` Taylor Blau
2021-06-30 2:04 ` Jeff King
2021-06-30 3:07 ` Taylor Blau
2021-06-30 5:45 ` Jeff King
2021-07-02 17:44 ` Taylor Blau
2021-07-02 21:21 ` Jeff King
2021-06-30 1:51 ` Jeff King
2021-07-20 14:26 ` Patrick Steinhardt
2021-08-02 9:37 ` [PATCH v3 0/4] Speed up connectivity checks Patrick Steinhardt
2021-08-02 9:38 ` [PATCH v3 1/4] connected: do not sort input revisions Patrick Steinhardt
2021-08-02 12:49 ` Ævar Arnfjörð Bjarmason
2021-08-03 8:50 ` Patrick Steinhardt
2021-08-04 11:01 ` Ævar Arnfjörð Bjarmason
2021-08-02 19:00 ` Junio C Hamano
2021-08-03 8:55 ` Patrick Steinhardt
2021-08-03 21:47 ` Junio C Hamano
2021-08-02 9:38 ` [PATCH v3 2/4] revision: stop retrieving reference twice Patrick Steinhardt
2021-08-02 12:53 ` Ævar Arnfjörð Bjarmason
2021-08-02 9:38 ` [PATCH v3 3/4] revision: avoid loading object headers multiple times Patrick Steinhardt
2021-08-02 12:55 ` Ævar Arnfjörð Bjarmason
2021-08-05 10:12 ` Patrick Steinhardt
2021-08-02 19:40 ` Junio C Hamano
2021-08-03 9:07 ` Patrick Steinhardt
2021-08-06 14:17 ` Patrick Steinhardt
2021-08-02 9:38 ` [PATCH v3 4/4] revision: avoid hitting packfiles when commits are in commit-graph Patrick Steinhardt
2021-08-02 20:01 ` Junio C Hamano
2021-08-03 9:16 ` Patrick Steinhardt
2021-08-03 21:56 ` Junio C Hamano
2021-08-05 11:01 ` Patrick Steinhardt
2021-08-05 16:16 ` Junio C Hamano
2021-08-04 10:51 ` Ævar Arnfjörð Bjarmason
2021-08-05 11:25 ` [PATCH v4 0/6] Speed up connectivity checks Patrick Steinhardt
2021-08-05 11:25 ` [PATCH v4 1/6] revision: separate walk and unsorted flags Patrick Steinhardt
2021-08-05 18:47 ` Junio C Hamano
2021-08-05 11:25 ` [PATCH v4 2/6] connected: do not sort input revisions Patrick Steinhardt
2021-08-05 18:44 ` Junio C Hamano
2021-08-06 6:00 ` Patrick Steinhardt
2021-08-06 16:50 ` Junio C Hamano
2021-08-05 11:25 ` [PATCH v4 3/6] revision: stop retrieving reference twice Patrick Steinhardt
2021-08-05 11:25 ` [PATCH v4 4/6] revision: avoid loading object headers multiple times Patrick Steinhardt
2021-08-05 11:25 ` Patrick Steinhardt [this message]
2021-08-05 11:25 ` [PATCH v4 6/6] revision: avoid hitting packfiles when commits are in commit-graph Patrick Steinhardt
2021-08-09 8:00 ` [PATCH v5 0/5] Speed up connectivity checks Patrick Steinhardt
2021-08-09 8:02 ` Patrick Steinhardt
2021-08-09 8:11 ` Patrick Steinhardt
2021-08-09 8:11 ` [PATCH v5 1/5] revision: separate walk and unsorted flags Patrick Steinhardt
2021-08-09 8:11 ` [PATCH v5 2/5] connected: do not sort input revisions Patrick Steinhardt
2021-08-09 8:11 ` [PATCH v5 3/5] revision: stop retrieving reference twice Patrick Steinhardt
2021-08-09 8:11 ` [PATCH v5 4/5] commit-graph: split out function to search commit position Patrick Steinhardt
2021-08-09 8:12 ` [PATCH v5 5/5] revision: avoid hitting packfiles when commits are in commit-graph Patrick Steinhardt
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