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Thu, 04 Jun 2020 00:29:57 -0700 (PDT) From: Abhishek Kumar To: git@vger.kernel.org Cc: stolee@gmail.com, jnareb@gmail.com Subject: [GSoC Patch 2/3] commit: convert commit->generation to a slab Date: Thu, 4 Jun 2020 12:57:58 +0530 Message-Id: <20200604072759.19142-3-abhishekkumar8222@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200604072759.19142-1-abhishekkumar8222@gmail.com> References: <20200604072759.19142-1-abhishekkumar8222@gmail.com> MIME-Version: 1.0 Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org In this commit, we will use the generation slab helpers introduced in last commit and replace existing uses of commit->generation using 'contrib/coccinelle/generation.cocci' Signed-off-by: Abhishek Kumar --- alloc.c | 1 - blame.c | 2 +- commit-graph.c | 39 +++++++++++----------- commit-reach.c | 50 ++++++++++++++--------------- commit.c | 4 +-- commit.h | 1 - contrib/coccinelle/generation.cocci | 12 +++++++ revision.c | 16 ++++----- 8 files changed, 68 insertions(+), 57 deletions(-) create mode 100644 contrib/coccinelle/generation.cocci diff --git a/alloc.c b/alloc.c index 1c64c4dd16..cbed187094 100644 --- a/alloc.c +++ b/alloc.c @@ -109,7 +109,6 @@ void init_commit_node(struct repository *r, struct commit *c) c->object.type = OBJ_COMMIT; c->index = alloc_commit_index(r); c->graph_pos = COMMIT_NOT_FROM_GRAPH; - c->generation = GENERATION_NUMBER_INFINITY; } void *alloc_commit_node(struct repository *r) diff --git a/blame.c b/blame.c index da7e28800e..50e6316076 100644 --- a/blame.c +++ b/blame.c @@ -1272,7 +1272,7 @@ static int maybe_changed_path(struct repository *r, if (!bd) return 1; - if (origin->commit->generation == GENERATION_NUMBER_INFINITY) + if (generation(origin->commit) == GENERATION_NUMBER_INFINITY) return 1; filter = get_bloom_filter(r, origin->commit, 0); diff --git a/commit-graph.c b/commit-graph.c index 63f419048d..9ce7d4acb1 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -120,9 +120,9 @@ static int commit_gen_cmp(const void *va, const void *vb) const struct commit *b = *(const struct commit **)vb; /* lower generation commits first */ - if (a->generation < b->generation) + if (generation(a) < generation(b)) return -1; - else if (a->generation > b->generation) + else if (generation(a) > generation(b)) return 1; /* use date as a heuristic when generations are equal */ @@ -712,7 +712,7 @@ static void fill_commit_graph_info(struct commit *item, struct commit_graph *g, lex_index = pos - g->num_commits_in_base; commit_data = g->chunk_commit_data + GRAPH_DATA_WIDTH * lex_index; item->graph_pos = pos; - item->generation = get_be32(commit_data + g->hash_len + 8) >> 2; + set_generation(item, get_be32(commit_data + g->hash_len + 8) >> 2); } static inline void set_commit_tree(struct commit *c, struct tree *t) @@ -754,7 +754,7 @@ static int fill_commit_in_graph(struct repository *r, date_low = get_be32(commit_data + g->hash_len + 12); item->date = (timestamp_t)((date_high << 32) | date_low); - item->generation = get_be32(commit_data + g->hash_len + 8) >> 2; + set_generation(item, get_be32(commit_data + g->hash_len + 8) >> 2); pptr = &item->parents; @@ -1048,7 +1048,7 @@ static void write_graph_chunk_data(struct hashfile *f, int hash_len, else packedDate[0] = 0; - packedDate[0] |= htonl((*list)->generation << 2); + packedDate[0] |= htonl(generation((*list)) << 2); packedDate[1] = htonl((*list)->date); hashwrite(f, packedDate, 8); @@ -1280,8 +1280,8 @@ static void compute_generation_numbers(struct write_commit_graph_context *ctx) ctx->commits.nr); for (i = 0; i < ctx->commits.nr; i++) { display_progress(ctx->progress, i + 1); - if (ctx->commits.list[i]->generation != GENERATION_NUMBER_INFINITY && - ctx->commits.list[i]->generation != GENERATION_NUMBER_ZERO) + if (generation(ctx->commits.list[i]) != GENERATION_NUMBER_INFINITY && + generation(ctx->commits.list[i]) != GENERATION_NUMBER_ZERO) continue; commit_list_insert(ctx->commits.list[i], &list); @@ -1292,22 +1292,23 @@ static void compute_generation_numbers(struct write_commit_graph_context *ctx) uint32_t max_generation = 0; for (parent = current->parents; parent; parent = parent->next) { - if (parent->item->generation == GENERATION_NUMBER_INFINITY || - parent->item->generation == GENERATION_NUMBER_ZERO) { + if (generation(parent->item) == GENERATION_NUMBER_INFINITY || + generation(parent->item) == GENERATION_NUMBER_ZERO) { all_parents_computed = 0; commit_list_insert(parent->item, &list); break; - } else if (parent->item->generation > max_generation) { - max_generation = parent->item->generation; + } else if (generation(parent->item) > max_generation) { + max_generation = generation(parent->item); } } if (all_parents_computed) { - current->generation = max_generation + 1; + set_generation(current, max_generation + 1); pop_commit(&list); - if (current->generation > GENERATION_NUMBER_MAX) - current->generation = GENERATION_NUMBER_MAX; + if (generation(current) > GENERATION_NUMBER_MAX) + set_generation(current, + GENERATION_NUMBER_MAX); } } } @@ -2314,8 +2315,8 @@ int verify_commit_graph(struct repository *r, struct commit_graph *g, int flags) oid_to_hex(&graph_parents->item->object.oid), oid_to_hex(&odb_parents->item->object.oid)); - if (graph_parents->item->generation > max_generation) - max_generation = graph_parents->item->generation; + if (generation(graph_parents->item) > max_generation) + max_generation = generation(graph_parents->item); graph_parents = graph_parents->next; odb_parents = odb_parents->next; @@ -2325,7 +2326,7 @@ int verify_commit_graph(struct repository *r, struct commit_graph *g, int flags) graph_report(_("commit-graph parent list for commit %s terminates early"), oid_to_hex(&cur_oid)); - if (!graph_commit->generation) { + if (!generation(graph_commit)) { if (generation_zero == GENERATION_NUMBER_EXISTS) graph_report(_("commit-graph has generation number zero for commit %s, but non-zero elsewhere"), oid_to_hex(&cur_oid)); @@ -2345,10 +2346,10 @@ int verify_commit_graph(struct repository *r, struct commit_graph *g, int flags) if (max_generation == GENERATION_NUMBER_MAX) max_generation--; - if (graph_commit->generation != max_generation + 1) + if (generation(graph_commit) != max_generation + 1) graph_report(_("commit-graph generation for commit %s is %u != %u"), oid_to_hex(&cur_oid), - graph_commit->generation, + generation(graph_commit), max_generation + 1); if (graph_commit->date != odb_commit->date) diff --git a/commit-reach.c b/commit-reach.c index 4ca7e706a1..77c980054a 100644 --- a/commit-reach.c +++ b/commit-reach.c @@ -59,13 +59,13 @@ static struct commit_list *paint_down_to_common(struct repository *r, struct commit_list *parents; int flags; - if (min_generation && commit->generation > last_gen) + if (min_generation && generation(commit) > last_gen) BUG("bad generation skip %8x > %8x at %s", - commit->generation, last_gen, + generation(commit), last_gen, oid_to_hex(&commit->object.oid)); - last_gen = commit->generation; + last_gen = generation(commit); - if (commit->generation < min_generation) + if (generation(commit) < min_generation) break; flags = commit->object.flags & (PARENT1 | PARENT2 | STALE); @@ -176,7 +176,7 @@ static int remove_redundant(struct repository *r, struct commit **array, int cnt repo_parse_commit(r, array[i]); for (i = 0; i < cnt; i++) { struct commit_list *common; - uint32_t min_generation = array[i]->generation; + uint32_t min_generation = generation(array[i]); if (redundant[i]) continue; @@ -186,8 +186,8 @@ static int remove_redundant(struct repository *r, struct commit **array, int cnt filled_index[filled] = j; work[filled++] = array[j]; - if (array[j]->generation < min_generation) - min_generation = array[j]->generation; + if (generation(array[j]) < min_generation) + min_generation = generation(array[j]); } common = paint_down_to_common(r, array[i], filled, work, min_generation); @@ -323,16 +323,16 @@ int repo_in_merge_bases_many(struct repository *r, struct commit *commit, for (i = 0; i < nr_reference; i++) { if (repo_parse_commit(r, reference[i])) return ret; - if (reference[i]->generation < min_generation) - min_generation = reference[i]->generation; + if (generation(reference[i]) < min_generation) + min_generation = generation(reference[i]); } - if (commit->generation > min_generation) + if (generation(commit) > min_generation) return ret; bases = paint_down_to_common(r, commit, nr_reference, reference, - commit->generation); + generation(commit)); if (commit->object.flags & PARENT2) ret = 1; clear_commit_marks(commit, all_flags); @@ -467,7 +467,7 @@ static enum contains_result contains_test(struct commit *candidate, /* Otherwise, we don't know; prepare to recurse */ parse_commit_or_die(candidate); - if (candidate->generation < cutoff) + if (generation(candidate) < cutoff) return CONTAINS_NO; return CONTAINS_UNKNOWN; @@ -492,8 +492,8 @@ static enum contains_result contains_tag_algo(struct commit *candidate, for (p = want; p; p = p->next) { struct commit *c = p->item; load_commit_graph_info(the_repository, c); - if (c->generation < cutoff) - cutoff = c->generation; + if (generation(c) < cutoff) + cutoff = generation(c); } result = contains_test(candidate, want, cache, cutoff); @@ -544,9 +544,9 @@ static int compare_commits_by_gen(const void *_a, const void *_b) const struct commit *a = *(const struct commit * const *)_a; const struct commit *b = *(const struct commit * const *)_b; - if (a->generation < b->generation) + if (generation(a) < generation(b)) return -1; - if (a->generation > b->generation) + if (generation(a) > generation(b)) return 1; return 0; } @@ -585,7 +585,7 @@ int can_all_from_reach_with_flag(struct object_array *from, list[nr_commits] = (struct commit *)from_one; if (parse_commit(list[nr_commits]) || - list[nr_commits]->generation < min_generation) { + generation(list[nr_commits]) < min_generation) { result = 0; goto cleanup; } @@ -621,7 +621,7 @@ int can_all_from_reach_with_flag(struct object_array *from, if (parse_commit(parent->item) || parent->item->date < min_commit_date || - parent->item->generation < min_generation) + generation(parent->item) < min_generation) continue; commit_list_insert(parent->item, &stack); @@ -665,8 +665,8 @@ int can_all_from_reach(struct commit_list *from, struct commit_list *to, if (from_iter->item->date < min_commit_date) min_commit_date = from_iter->item->date; - if (from_iter->item->generation < min_generation) - min_generation = from_iter->item->generation; + if (generation(from_iter->item) < min_generation) + min_generation = generation(from_iter->item); } from_iter = from_iter->next; @@ -677,8 +677,8 @@ int can_all_from_reach(struct commit_list *from, struct commit_list *to, if (to_iter->item->date < min_commit_date) min_commit_date = to_iter->item->date; - if (to_iter->item->generation < min_generation) - min_generation = to_iter->item->generation; + if (generation(to_iter->item) < min_generation) + min_generation = generation(to_iter->item); } to_iter->item->object.flags |= PARENT2; @@ -721,8 +721,8 @@ struct commit_list *get_reachable_subset(struct commit **from, int nr_from, struct commit *c = *item; parse_commit(c); - if (c->generation < min_generation) - min_generation = c->generation; + if (generation(c) < min_generation) + min_generation = generation(c); if (!(c->object.flags & PARENT1)) { c->object.flags |= PARENT1; @@ -755,7 +755,7 @@ struct commit_list *get_reachable_subset(struct commit **from, int nr_from, parse_commit(p); - if (p->generation < min_generation) + if (generation(p) < min_generation) continue; if (p->object.flags & PARENT2) diff --git a/commit.c b/commit.c index 87686a7055..8dad0f8446 100644 --- a/commit.c +++ b/commit.c @@ -731,9 +731,9 @@ int compare_commits_by_gen_then_commit_date(const void *a_, const void *b_, void const struct commit *a = a_, *b = b_; /* newer commits first */ - if (a->generation < b->generation) + if (generation(a) < generation(b)) return 1; - else if (a->generation > b->generation) + else if (generation(a) > generation(b)) return -1; /* use date as a heuristic when generations are equal */ diff --git a/commit.h b/commit.h index cc610400d5..01e1c4c3eb 100644 --- a/commit.h +++ b/commit.h @@ -34,7 +34,6 @@ struct commit { */ struct tree *maybe_tree; uint32_t graph_pos; - uint32_t generation; unsigned int index; }; diff --git a/contrib/coccinelle/generation.cocci b/contrib/coccinelle/generation.cocci new file mode 100644 index 0000000000..da13c44856 --- /dev/null +++ b/contrib/coccinelle/generation.cocci @@ -0,0 +1,12 @@ +@@ +struct commit *c; +expression E; +@@ +- c->generation = E ++ set_generation(c, E) + +@@ +struct commit *c; +@@ +- c->generation ++ generation(c) diff --git a/revision.c b/revision.c index 60cca8c0b9..d76382007c 100644 --- a/revision.c +++ b/revision.c @@ -720,7 +720,7 @@ static int check_maybe_different_in_bloom_filter(struct rev_info *revs, if (!revs->repo->objects->commit_graph) return -1; - if (commit->generation == GENERATION_NUMBER_INFINITY) + if (generation(commit) == GENERATION_NUMBER_INFINITY) return -1; filter = get_bloom_filter(revs->repo, commit, 0); @@ -3314,7 +3314,7 @@ static void explore_to_depth(struct rev_info *revs, struct topo_walk_info *info = revs->topo_walk_info; struct commit *c; while ((c = prio_queue_peek(&info->explore_queue)) && - c->generation >= gen_cutoff) + generation(c) >= gen_cutoff) explore_walk_step(revs); } @@ -3330,7 +3330,7 @@ static void indegree_walk_step(struct rev_info *revs) if (parse_commit_gently(c, 1) < 0) return; - explore_to_depth(revs, c->generation); + explore_to_depth(revs, generation(c)); for (p = c->parents; p; p = p->next) { struct commit *parent = p->item; @@ -3354,7 +3354,7 @@ static void compute_indegrees_to_depth(struct rev_info *revs, struct topo_walk_info *info = revs->topo_walk_info; struct commit *c; while ((c = prio_queue_peek(&info->indegree_queue)) && - c->generation >= gen_cutoff) + generation(c) >= gen_cutoff) indegree_walk_step(revs); } @@ -3414,8 +3414,8 @@ static void init_topo_walk(struct rev_info *revs) test_flag_and_insert(&info->explore_queue, c, TOPO_WALK_EXPLORED); test_flag_and_insert(&info->indegree_queue, c, TOPO_WALK_INDEGREE); - if (c->generation < info->min_generation) - info->min_generation = c->generation; + if (generation(c) < info->min_generation) + info->min_generation = generation(c); *(indegree_slab_at(&info->indegree, c)) = 1; @@ -3473,8 +3473,8 @@ static void expand_topo_walk(struct rev_info *revs, struct commit *commit) if (parse_commit_gently(parent, 1) < 0) continue; - if (parent->generation < info->min_generation) { - info->min_generation = parent->generation; + if (generation(parent) < info->min_generation) { + info->min_generation = generation(parent); compute_indegrees_to_depth(revs, info->min_generation); }