diff options
Diffstat (limited to 'merge-ort.c')
| -rw-r--r-- | merge-ort.c | 266 |
1 files changed, 150 insertions, 116 deletions
diff --git a/merge-ort.c b/merge-ort.c index b346e23ff2..0342f10483 100644 --- a/merge-ort.c +++ b/merge-ort.c @@ -32,6 +32,7 @@ #include "promisor-remote.h" #include "revision.h" #include "strmap.h" +#include "submodule-config.h" #include "submodule.h" #include "tree.h" #include "unpack-trees.h" @@ -303,8 +304,6 @@ struct merge_options_internal { * * these keys serve to intern all the path strings, which allows * us to do pointer comparison on directory names instead of * strcmp; we just have to be careful to use the interned strings. - * (Technically paths_to_free may track some strings that were - * removed from froms paths.) * * The values of paths: * * either a pointer to a merged_info, or a conflict_info struct @@ -340,14 +339,14 @@ struct merge_options_internal { struct strmap conflicted; /* - * paths_to_free: additional list of strings to free + * pool: memory pool for fast allocation/deallocation * - * If keys are removed from "paths", they are added to paths_to_free - * to ensure they are later freed. We avoid free'ing immediately since - * other places (e.g. conflict_info.pathnames[]) may still be - * referencing these paths. + * We allocate room for lots of filenames and auxiliary data + * structures in merge_options_internal, and it tends to all be + * freed together too. Using a memory pool for these provides a + * nice speedup. */ - struct string_list paths_to_free; + struct mem_pool pool; /* * output: special messages and conflict notices for various paths @@ -519,64 +518,45 @@ static void clear_or_reinit_internal_opts(struct merge_options_internal *opti, { struct rename_info *renames = &opti->renames; int i; - void (*strmap_func)(struct strmap *, int) = + void (*strmap_clear_func)(struct strmap *, int) = reinitialize ? strmap_partial_clear : strmap_clear; - void (*strintmap_func)(struct strintmap *) = + void (*strintmap_clear_func)(struct strintmap *) = reinitialize ? strintmap_partial_clear : strintmap_clear; - void (*strset_func)(struct strset *) = + void (*strset_clear_func)(struct strset *) = reinitialize ? strset_partial_clear : strset_clear; - /* - * We marked opti->paths with strdup_strings = 0, so that we - * wouldn't have to make another copy of the fullpath created by - * make_traverse_path from setup_path_info(). But, now that we've - * used it and have no other references to these strings, it is time - * to deallocate them. - */ - free_strmap_strings(&opti->paths); - strmap_func(&opti->paths, 1); + strmap_clear_func(&opti->paths, 0); /* * All keys and values in opti->conflicted are a subset of those in * opti->paths. We don't want to deallocate anything twice, so we * don't free the keys and we pass 0 for free_values. */ - strmap_func(&opti->conflicted, 0); - - /* - * opti->paths_to_free is similar to opti->paths; we created it with - * strdup_strings = 0 to avoid making _another_ copy of the fullpath - * but now that we've used it and have no other references to these - * strings, it is time to deallocate them. We do so by temporarily - * setting strdup_strings to 1. - */ - opti->paths_to_free.strdup_strings = 1; - string_list_clear(&opti->paths_to_free, 0); - opti->paths_to_free.strdup_strings = 0; + strmap_clear_func(&opti->conflicted, 0); if (opti->attr_index.cache_nr) /* true iff opt->renormalize */ discard_index(&opti->attr_index); /* Free memory used by various renames maps */ for (i = MERGE_SIDE1; i <= MERGE_SIDE2; ++i) { - strintmap_func(&renames->dirs_removed[i]); - strmap_func(&renames->dir_renames[i], 0); - strintmap_func(&renames->relevant_sources[i]); + strintmap_clear_func(&renames->dirs_removed[i]); + strmap_clear_func(&renames->dir_renames[i], 0); + strintmap_clear_func(&renames->relevant_sources[i]); if (!reinitialize) assert(renames->cached_pairs_valid_side == 0); if (i != renames->cached_pairs_valid_side && -1 != renames->cached_pairs_valid_side) { - strset_func(&renames->cached_target_names[i]); - strmap_func(&renames->cached_pairs[i], 1); - strset_func(&renames->cached_irrelevant[i]); + strset_clear_func(&renames->cached_target_names[i]); + strmap_clear_func(&renames->cached_pairs[i], 1); + strset_clear_func(&renames->cached_irrelevant[i]); partial_clear_dir_rename_count(&renames->dir_rename_count[i]); if (!reinitialize) strmap_clear(&renames->dir_rename_count[i], 1); } } for (i = MERGE_SIDE1; i <= MERGE_SIDE2; ++i) { - strintmap_func(&renames->deferred[i].possible_trivial_merges); - strset_func(&renames->deferred[i].target_dirs); + strintmap_clear_func(&renames->deferred[i].possible_trivial_merges); + strset_clear_func(&renames->deferred[i].target_dirs); renames->deferred[i].trivial_merges_okay = 1; /* 1 == maybe */ } renames->cached_pairs_valid_side = 0; @@ -603,6 +583,8 @@ static void clear_or_reinit_internal_opts(struct merge_options_internal *opti, strmap_clear(&opti->output, 0); } + mem_pool_discard(&opti->pool, 0); + /* Clean out callback_data as well. */ FREE_AND_NULL(renames->callback_data); renames->callback_data_nr = renames->callback_data_alloc = 0; @@ -627,6 +609,7 @@ static int err(struct merge_options *opt, const char *err, ...) static void format_commit(struct strbuf *sb, int indent, + struct repository *repo, struct commit *commit) { struct merge_remote_desc *desc; @@ -640,7 +623,7 @@ static void format_commit(struct strbuf *sb, return; } - format_commit_message(commit, "%h %s", sb, &ctx); + repo_format_commit_message(repo, commit, "%h %s", sb, &ctx); strbuf_addch(sb, '\n'); } @@ -665,6 +648,36 @@ static void path_msg(struct merge_options *opt, strbuf_addch(sb, '\n'); } +static struct diff_filespec *pool_alloc_filespec(struct mem_pool *pool, + const char *path) +{ + /* Similar to alloc_filespec(), but allocate from pool and reuse path */ + struct diff_filespec *spec; + + spec = mem_pool_calloc(pool, 1, sizeof(*spec)); + spec->path = (char*)path; /* spec won't modify it */ + + spec->count = 1; + spec->is_binary = -1; + return spec; +} + +static struct diff_filepair *pool_diff_queue(struct mem_pool *pool, + struct diff_queue_struct *queue, + struct diff_filespec *one, + struct diff_filespec *two) +{ + /* Same code as diff_queue(), except allocate from pool */ + struct diff_filepair *dp; + + dp = mem_pool_calloc(pool, 1, sizeof(*dp)); + dp->one = one; + dp->two = two; + if (queue) + diff_q(queue, dp); + return dp; +} + /* add a string to a strbuf, but converting "/" to "_" */ static void add_flattened_path(struct strbuf *out, const char *s) { @@ -793,8 +806,9 @@ static void setup_path_info(struct merge_options *opt, assert(!df_conflict || !resolved); /* df_conflict implies !resolved */ assert(resolved == (merged_version != NULL)); - mi = xcalloc(1, resolved ? sizeof(struct merged_info) : - sizeof(struct conflict_info)); + mi = mem_pool_calloc(&opt->priv->pool, 1, + resolved ? sizeof(struct merged_info) : + sizeof(struct conflict_info)); mi->directory_name = current_dir_name; mi->basename_offset = current_dir_name_len; mi->clean = !!resolved; @@ -891,11 +905,11 @@ static void add_pair(struct merge_options *opt, return; } - one = alloc_filespec(pathname); - two = alloc_filespec(pathname); + one = pool_alloc_filespec(&opt->priv->pool, pathname); + two = pool_alloc_filespec(&opt->priv->pool, pathname); fill_filespec(is_add ? two : one, &names[names_idx].oid, 1, names[names_idx].mode); - diff_queue(&renames->pairs[side], one, two); + pool_diff_queue(&opt->priv->pool, &renames->pairs[side], one, two); } static void collect_rename_info(struct merge_options *opt, @@ -1086,7 +1100,7 @@ static int collect_merge_info_callback(int n, len = traverse_path_len(info, p->pathlen); /* +1 in both of the following lines to include the NUL byte */ - fullpath = xmalloc(len + 1); + fullpath = mem_pool_alloc(&opt->priv->pool, len + 1); make_traverse_path(fullpath, len + 1, info, p->path, p->pathlen); /* @@ -1341,7 +1355,7 @@ static int handle_deferred_entries(struct merge_options *opt, copy = renames->deferred[side].possible_trivial_merges; strintmap_init_with_options(&renames->deferred[side].possible_trivial_merges, 0, - NULL, + &opt->priv->pool, 0); strintmap_for_each_entry(©, &iter, entry) { const char *path = entry->key; @@ -1499,7 +1513,6 @@ static int find_first_merges(struct repository *repo, xsnprintf(merged_revision, sizeof(merged_revision), "^%s", oid_to_hex(&a->object.oid)); repo_init_revisions(repo, &revs, NULL); - rev_opts.submodule = path; /* FIXME: can't handle linked worktrees in submodules yet */ revs.single_worktree = path != NULL; setup_revisions(ARRAY_SIZE(rev_args)-1, rev_args, &revs, &rev_opts); @@ -1509,7 +1522,7 @@ static int find_first_merges(struct repository *repo, die("revision walk setup failed"); while ((commit = get_revision(&revs)) != NULL) { struct object *o = &(commit->object); - if (in_merge_bases(b, commit)) + if (repo_in_merge_bases(repo, b, commit)) add_object_array(o, NULL, &merges); } reset_revision_walk(); @@ -1524,7 +1537,7 @@ static int find_first_merges(struct repository *repo, contains_another = 0; for (j = 0; j < merges.nr; j++) { struct commit *m2 = (struct commit *) merges.objects[j].item; - if (i != j && in_merge_bases(m2, m1)) { + if (i != j && repo_in_merge_bases(repo, m2, m1)) { contains_another = 1; break; } @@ -1545,10 +1558,12 @@ static int merge_submodule(struct merge_options *opt, const struct object_id *b, struct object_id *result) { + struct repository subrepo; + struct strbuf sb = STRBUF_INIT; + int ret = 0; struct commit *commit_o, *commit_a, *commit_b; int parent_count; struct object_array merges; - struct strbuf sb = STRBUF_INIT; int i; int search = !opt->priv->call_depth; @@ -1564,46 +1579,48 @@ static int merge_submodule(struct merge_options *opt, if (is_null_oid(b)) return 0; - if (add_submodule_odb(path)) { + if (repo_submodule_init(&subrepo, opt->repo, path, null_oid())) { path_msg(opt, path, 0, - _("Failed to merge submodule %s (not checked out)"), - path); + _("Failed to merge submodule %s (not checked out)"), + path); return 0; } - if (!(commit_o = lookup_commit_reference(opt->repo, o)) || - !(commit_a = lookup_commit_reference(opt->repo, a)) || - !(commit_b = lookup_commit_reference(opt->repo, b))) { + if (!(commit_o = lookup_commit_reference(&subrepo, o)) || + !(commit_a = lookup_commit_reference(&subrepo, a)) || + !(commit_b = lookup_commit_reference(&subrepo, b))) { path_msg(opt, path, 0, _("Failed to merge submodule %s (commits not present)"), path); - return 0; + goto cleanup; } /* check whether both changes are forward */ - if (!in_merge_bases(commit_o, commit_a) || - !in_merge_bases(commit_o, commit_b)) { + if (!repo_in_merge_bases(&subrepo, commit_o, commit_a) || + !repo_in_merge_bases(&subrepo, commit_o, commit_b)) { path_msg(opt, path, 0, _("Failed to merge submodule %s " "(commits don't follow merge-base)"), path); - return 0; + goto cleanup; } /* Case #1: a is contained in b or vice versa */ - if (in_merge_bases(commit_a, commit_b)) { + if (repo_in_merge_bases(&subrepo, commit_a, commit_b)) { oidcpy(result, b); path_msg(opt, path, 1, _("Note: Fast-forwarding submodule %s to %s"), path, oid_to_hex(b)); - return 1; + ret = 1; + goto cleanup; } - if (in_merge_bases(commit_b, commit_a)) { + if (repo_in_merge_bases(&subrepo, commit_b, commit_a)) { oidcpy(result, a); path_msg(opt, path, 1, _("Note: Fast-forwarding submodule %s to %s"), path, oid_to_hex(a)); - return 1; + ret = 1; + goto cleanup; } /* @@ -1615,10 +1632,10 @@ static int merge_submodule(struct merge_options *opt, /* Skip the search if makes no sense to the calling context. */ if (!search) - return 0; + goto cleanup; /* find commit which merges them */ - parent_count = find_first_merges(opt->repo, path, commit_a, commit_b, + parent_count = find_first_merges(&subrepo, path, commit_a, commit_b, &merges); switch (parent_count) { case 0: @@ -1626,7 +1643,7 @@ static int merge_submodule(struct merge_options *opt, break; case 1: - format_commit(&sb, 4, + format_commit(&sb, 4, &subrepo, (struct commit *)merges.objects[0].item); path_msg(opt, path, 0, _("Failed to merge submodule %s, but a possible merge " @@ -1643,7 +1660,7 @@ static int merge_submodule(struct merge_options *opt, break; default: for (i = 0; i < merges.nr; i++) - format_commit(&sb, 4, + format_commit(&sb, 4, &subrepo, (struct commit *)merges.objects[i].item); path_msg(opt, path, 0, _("Failed to merge submodule %s, but multiple " @@ -1652,7 +1669,9 @@ static int merge_submodule(struct merge_options *opt, } object_array_clear(&merges); - return 0; +cleanup: + repo_clear(&subrepo); + return ret; } static void initialize_attr_index(struct merge_options *opt) @@ -2293,12 +2312,17 @@ static void apply_directory_rename_modifications(struct merge_options *opt, VERIFY_CI(ci); /* Find parent directories missing from opt->priv->paths */ - cur_path = new_path; + cur_path = mem_pool_strdup(&opt->priv->pool, new_path); + free((char*)new_path); + new_path = (char *)cur_path; + while (1) { /* Find the parent directory of cur_path */ char *last_slash = strrchr(cur_path, '/'); if (last_slash) { - parent_name = xstrndup(cur_path, last_slash - cur_path); + parent_name = mem_pool_strndup(&opt->priv->pool, + cur_path, + last_slash - cur_path); } else { parent_name = opt->priv->toplevel_dir; break; @@ -2307,7 +2331,6 @@ static void apply_directory_rename_modifications(struct merge_options *opt, /* Look it up in opt->priv->paths */ entry = strmap_get_entry(&opt->priv->paths, parent_name); if (entry) { - free((char*)parent_name); parent_name = entry->key; /* reuse known pointer */ break; } @@ -2334,13 +2357,6 @@ static void apply_directory_rename_modifications(struct merge_options *opt, parent_name = cur_dir; } - /* - * We are removing old_path from opt->priv->paths. old_path also will - * eventually need to be freed, but it may still be used by e.g. - * ci->pathnames. So, store it in another string-list for now. - */ - string_list_append(&opt->priv->paths_to_free, old_path); - assert(ci->filemask == 2 || ci->filemask == 4); assert(ci->dirmask == 0); strmap_remove(&opt->priv->paths, old_path, 0); @@ -2374,7 +2390,6 @@ static void apply_directory_rename_modifications(struct merge_options *opt, new_ci->stages[index].mode = ci->stages[index].mode; oidcpy(&new_ci->stages[index].oid, &ci->stages[index].oid); - free(ci); ci = new_ci; } @@ -2802,10 +2817,23 @@ static void use_cached_pairs(struct merge_options *opt, if (!new_name) new_name = old_name; + /* + * cached_pairs has *copies* of old_name and new_name, + * because it has to persist across merges. Since + * pool_alloc_filespec() will just re-use the existing + * filenames, which will also get re-used by + * opt->priv->paths if they become renames, and then + * get freed at the end of the merge, that would leave + * the copy in cached_pairs dangling. Avoid this by + * making a copy here. + */ + old_name = mem_pool_strdup(&opt->priv->pool, old_name); + new_name = mem_pool_strdup(&opt->priv->pool, new_name); + /* We don't care about oid/mode, only filenames and status */ - one = alloc_filespec(old_name); - two = alloc_filespec(new_name); - diff_queue(pairs, one, two); + one = pool_alloc_filespec(&opt->priv->pool, old_name); + two = pool_alloc_filespec(&opt->priv->pool, new_name); + pool_diff_queue(&opt->priv->pool, pairs, one, two); pairs->queue[pairs->nr-1]->status = entry->value ? 'R' : 'D'; } } @@ -2913,6 +2941,7 @@ static int detect_regular_renames(struct merge_options *opt, diff_queued_diff = renames->pairs[side_index]; trace2_region_enter("diff", "diffcore_rename", opt->repo); diffcore_rename_extended(&diff_opts, + &opt->priv->pool, &renames->relevant_sources[side_index], &renames->dirs_removed[side_index], &renames->dir_rename_count[side_index], @@ -2963,7 +2992,7 @@ static int collect_renames(struct merge_options *opt, if (p->status != 'A' && p->status != 'R') { possibly_cache_new_pair(renames, p, side_index, NULL); - diff_free_filepair(p); + pool_diff_free_filepair(&opt->priv->pool, p); continue; } @@ -2976,7 +3005,7 @@ static int collect_renames(struct merge_options *opt, possibly_cache_new_pair(renames, p, side_index, new_path); if (p->status != 'R' && !new_path) { - diff_free_filepair(p); + pool_diff_free_filepair(&opt->priv->pool, p); continue; } @@ -3094,7 +3123,7 @@ cleanup: side_pairs = &renames->pairs[s]; for (i = 0; i < side_pairs->nr; ++i) { struct diff_filepair *p = side_pairs->queue[i]; - diff_free_filepair(p); + pool_diff_free_filepair(&opt->priv->pool, p); } } @@ -3107,7 +3136,8 @@ simple_cleanup: if (combined.nr) { int i; for (i = 0; i < combined.nr; i++) - diff_free_filepair(combined.queue[i]); + pool_diff_free_filepair(&opt->priv->pool, + combined.queue[i]); free(combined.queue); } @@ -3581,7 +3611,8 @@ static void process_entry(struct merge_options *opt, * the directory to remain here, so we need to move this * path to some new location. */ - CALLOC_ARRAY(new_ci, 1); + new_ci = mem_pool_calloc(&opt->priv->pool, 1, sizeof(*new_ci)); + /* We don't really want new_ci->merged.result copied, but it'll * be overwritten below so it doesn't matter. We also don't * want any directory mode/oid values copied, but we'll zero @@ -3673,7 +3704,8 @@ static void process_entry(struct merge_options *opt, const char *a_path = NULL, *b_path = NULL; int rename_a = 0, rename_b = 0; - new_ci = xmalloc(sizeof(*new_ci)); + new_ci = mem_pool_alloc(&opt->priv->pool, + sizeof(*new_ci)); if (S_ISREG(a_mode)) rename_a = 1; @@ -3742,17 +3774,8 @@ static void process_entry(struct merge_options *opt, b_path = path; strmap_put(&opt->priv->paths, b_path, new_ci); - if (rename_a && rename_b) { + if (rename_a && rename_b) strmap_remove(&opt->priv->paths, path, 0); - /* - * We removed path from opt->priv->paths. path - * will also eventually need to be freed, but - * it may still be used by e.g. ci->pathnames. - * So, store it in another string-list for now. - */ - string_list_append(&opt->priv->paths_to_free, - path); - } /* * Do special handling for b_path since process_entry() @@ -4029,11 +4052,7 @@ static int checkout(struct merge_options *opt, unpack_opts.quiet = 0; /* FIXME: sequencer might want quiet? */ unpack_opts.verbose_update = (opt->verbosity > 2); unpack_opts.fn = twoway_merge; - if (1/* FIXME: opts->overwrite_ignore*/) { - CALLOC_ARRAY(unpack_opts.dir, 1); - unpack_opts.dir->flags |= DIR_SHOW_IGNORED; - setup_standard_excludes(unpack_opts.dir); - } + unpack_opts.preserve_ignored = 0; /* FIXME: !opts->overwrite_ignore */ parse_tree(prev); init_tree_desc(&trees[0], prev->buffer, prev->size); parse_tree(next); @@ -4041,8 +4060,6 @@ static int checkout(struct merge_options *opt, ret = unpack_trees(2, trees, &unpack_opts); clear_unpack_trees_porcelain(&unpack_opts); - dir_clear(unpack_opts.dir); - FREE_AND_NULL(unpack_opts.dir); return ret; } @@ -4058,6 +4075,21 @@ static int record_conflicted_index_entries(struct merge_options *opt) if (strmap_empty(&opt->priv->conflicted)) return 0; + /* + * We are in a conflicted state. These conflicts might be inside + * sparse-directory entries, so check if any entries are outside + * of the sparse-checkout cone preemptively. + * + * We set original_cache_nr below, but that might change if + * index_name_pos() calls ask for paths within sparse directories. + */ + strmap_for_each_entry(&opt->priv->conflicted, &iter, e) { + if (!path_in_sparse_checkout(e->key, index)) { + ensure_full_index(index); + break; + } + } + /* If any entries have skip_worktree set, we'll have to check 'em out */ state.force = 1; state.quiet = 1; @@ -4293,6 +4325,7 @@ static void merge_start(struct merge_options *opt, struct merge_result *result) { struct rename_info *renames; int i; + struct mem_pool *pool = NULL; /* Sanity checks on opt */ trace2_region_enter("merge", "sanity checks", opt->repo); @@ -4358,9 +4391,11 @@ static void merge_start(struct merge_options *opt, struct merge_result *result) /* Initialization of various renames fields */ renames = &opt->priv->renames; + mem_pool_init(&opt->priv->pool, 0); + pool = &opt->priv->pool; for (i = MERGE_SIDE1; i <= MERGE_SIDE2; i++) { strintmap_init_with_options(&renames->dirs_removed[i], - NOT_RELEVANT, NULL, 0); + NOT_RELEVANT, pool, 0); strmap_init_with_options(&renames->dir_rename_count[i], NULL, 1); strmap_init_with_options(&renames->dir_renames[i], @@ -4374,7 +4409,7 @@ static void merge_start(struct merge_options *opt, struct merge_result *result) */ strintmap_init_with_options(&renames->relevant_sources[i], -1 /* explicitly invalid */, - NULL, 0); + pool, 0); strmap_init_with_options(&renames->cached_pairs[i], NULL, 1); strset_init_with_options(&renames->cached_irrelevant[i], @@ -4384,9 +4419,9 @@ static void merge_start(struct merge_options *opt, struct merge_result *result) } for (i = MERGE_SIDE1; i <= MERGE_SIDE2; i++) { strintmap_init_with_options(&renames->deferred[i].possible_trivial_merges, - 0, NULL, 0); + 0, pool, 0); strset_init_with_options(&renames->deferred[i].target_dirs, - NULL, 1); + pool, 1); renames->deferred[i].trivial_merges_okay = 1; /* 1 == maybe */ } @@ -4394,14 +4429,13 @@ static void merge_start(struct merge_options *opt, struct merge_result *result) * Although we initialize opt->priv->paths with strdup_strings=0, * that's just to avoid making yet another copy of an allocated * string. Putting the entry into paths means we are taking - * ownership, so we will later free it. paths_to_free is similar. + * ownership, so we will later free it. * * In contrast, conflicted just has a subset of keys from paths, so * we don't want to free those (it'd be a duplicate free). */ - strmap_init_with_options(&opt->priv->paths, NULL, 0); - strmap_init_with_options(&opt->priv->conflicted, NULL, 0); - string_list_init_nodup(&opt->priv->paths_to_free); + strmap_init_with_options(&opt->priv->paths, pool, 0); + strmap_init_with_options(&opt->priv->conflicted, pool, 0); /* * keys & strbufs in output will sometimes need to outlive "paths", |