From: Junio C Hamano Date: Sat, 23 May 2009 08:40:33 +0000 (-0700) Subject: Merge branch 'lt/maint-diff-reduce-lstat' X-Git-Tag: v1.6.4-rc0~136 X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=3ed24211d48d9a297b3784347acbf7e0265a58f3;hp=-c;p=git.git Merge branch 'lt/maint-diff-reduce-lstat' * lt/maint-diff-reduce-lstat: Teach 'git checkout' to preload the index contents Avoid unnecessary 'lstat()' calls in 'get_stat_data()' --- 3ed24211d48d9a297b3784347acbf7e0265a58f3 diff --combined builtin-checkout.c index f2d7ef01b,f1342abd0..b8a4b0139 --- a/builtin-checkout.c +++ b/builtin-checkout.c @@@ -5,7 -5,6 +5,7 @@@ #include "commit.h" #include "tree.h" #include "tree-walk.h" +#include "cache-tree.h" #include "unpack-trees.h" #include "dir.h" #include "run-command.h" @@@ -39,13 -38,23 +39,13 @@@ struct checkout_opts static int post_checkout_hook(struct commit *old, struct commit *new, int changed) { - struct child_process proc; - const char *name = git_path("hooks/post-checkout"); - const char *argv[5]; + return run_hook(NULL, "post-checkout", + sha1_to_hex(old ? old->object.sha1 : null_sha1), + sha1_to_hex(new ? new->object.sha1 : null_sha1), + changed ? "1" : "0", NULL); + /* "new" can be NULL when checking out from the index before + a commit exists. */ - if (access(name, X_OK) < 0) - return 0; - - memset(&proc, 0, sizeof(proc)); - argv[0] = name; - argv[1] = xstrdup(sha1_to_hex(old ? old->object.sha1 : null_sha1)); - argv[2] = xstrdup(sha1_to_hex(new->object.sha1)); - argv[3] = changed ? "1" : "0"; - argv[4] = NULL; - proc.argv = argv; - proc.no_stdin = 1; - proc.stdout_to_stderr = 1; - return run_command(&proc); } static int update_some(const unsigned char *sha1, const char *base, int baselen, @@@ -54,6 -63,9 +54,6 @@@ int len; struct cache_entry *ce; - if (S_ISGITLINK(mode)) - return 0; - if (S_ISDIR(mode)) return READ_TREE_RECURSIVE; @@@ -179,7 -191,7 +179,7 @@@ static int checkout_merged(int pos, str /* * NEEDSWORK: * There is absolutely no reason to write this as a blob object - * and create a phoney cache entry just to leak. This hack is + * and create a phony cache entry just to leak. This hack is * primarily to get to the write_entry() machinery that massages * the contents to work-tree format and writes out which only * allows it for a cache entry. The code in write_entry() needs @@@ -216,7 -228,7 +216,7 @@@ static int checkout_paths(struct tree * struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); newfd = hold_locked_index(lock_file, 1); - if (read_cache() < 0) + if (read_cache_preload(pathspec) < 0) return error("corrupt index file"); if (source_tree) @@@ -228,7 -240,7 +228,7 @@@ for (pos = 0; pos < active_nr; pos++) { struct cache_entry *ce = active_cache[pos]; - pathspec_match(pathspec, ps_matched, ce->name, 0); + match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, ps_matched); } if (report_path_error(ps_matched, pathspec, 0)) @@@ -237,7 -249,7 +237,7 @@@ /* Any unmerged paths? */ for (pos = 0; pos < active_nr; pos++) { struct cache_entry *ce = active_cache[pos]; - if (pathspec_match(pathspec, NULL, ce->name, 0)) { + if (match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, NULL)) { if (!ce_stage(ce)) continue; if (opts->force) { @@@ -262,7 -274,7 +262,7 @@@ state.refresh_cache = 1; for (pos = 0; pos < active_nr; pos++) { struct cache_entry *ce = active_cache[pos]; - if (pathspec_match(pathspec, NULL, ce->name, 0)) { + if (match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, NULL)) { if (!ce_stage(ce)) { errs |= checkout_entry(ce, &state, NULL); continue; @@@ -293,8 -305,6 +293,8 @@@ static void show_local_changes(struct o init_revisions(&rev, NULL); rev.abbrev = 0; rev.diffopt.output_format |= DIFF_FORMAT_NAME_STATUS; + if (diff_setup_done(&rev.diffopt) < 0) + die("diff_setup_done failed"); add_pending_object(&rev, head, NULL); run_diff_index(&rev, 0); } @@@ -351,11 -361,8 +351,11 @@@ struct branch_info static void setup_branch_path(struct branch_info *branch) { struct strbuf buf = STRBUF_INIT; - strbuf_addstr(&buf, "refs/heads/"); - strbuf_addstr(&buf, branch->name); + + strbuf_branchname(&buf, branch->name); + if (strcmp(buf.buf, branch->name)) + branch->name = xstrdup(buf.buf); + strbuf_splice(&buf, 0, 0, "refs/heads/", 11); branch->path = strbuf_detach(&buf, NULL); } @@@ -366,7 -373,7 +366,7 @@@ static int merge_working_tree(struct ch struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); int newfd = hold_locked_index(lock_file, 1); - if (read_cache() < 0) + if (read_cache_preload(NULL) < 0) return error("corrupt index file"); if (opts->force) { @@@ -400,7 -407,7 +400,7 @@@ topts.verbose_update = !opts->quiet; topts.fn = twoway_merge; topts.dir = xcalloc(1, sizeof(*topts.dir)); - topts.dir->show_ignored = 1; + topts.dir->flags |= DIR_SHOW_IGNORED; topts.dir->exclude_per_dir = ".gitignore"; tree = parse_tree_indirect(old->commit->object.sha1); init_tree_desc(&trees[0], tree->buffer, tree->size); @@@ -496,10 -503,10 +496,10 @@@ static void update_refs_for_switch(stru create_symref("HEAD", new->path, msg.buf); if (!opts->quiet) { if (old->path && !strcmp(new->path, old->path)) - fprintf(stderr, "Already on \"%s\"\n", + fprintf(stderr, "Already on '%s'\n", new->name); else - fprintf(stderr, "Switched to%s branch \"%s\"\n", + fprintf(stderr, "Switched to%s branch '%s'\n", opts->new_branch ? " a new" : "", new->name); } @@@ -508,7 -515,7 +508,7 @@@ REF_NODEREF, DIE_ON_ERR); if (!opts->quiet) { if (old->path) - fprintf(stderr, "Note: moving to \"%s\" which isn't a local branch\nIf you want to create a new branch from this checkout, you may do so\n(now or later) by using -b with the checkout command again. Example:\n git checkout -b \n", new->name); + fprintf(stderr, "Note: moving to '%s' which isn't a local branch\nIf you want to create a new branch from this checkout, you may do so\n(now or later) by using -b with the checkout command again. Example:\n git checkout -b \n", new->name); describe_detached_head("HEAD is now at", new->commit); } } @@@ -541,10 -548,18 +541,10 @@@ static int switch_branches(struct check parse_commit(new->commit); } - /* - * If we were on a detached HEAD, but we are now moving to - * a new commit, we want to mention the old commit once more - * to remind the user that it might be lost. - */ - if (!opts->quiet && !old.path && old.commit && new->commit != old.commit) - describe_detached_head("Previous HEAD position was", old.commit); - if (!old.commit && !opts->force) { if (!opts->quiet) { - fprintf(stderr, "warning: You appear to be on a branch yet to be born.\n"); - fprintf(stderr, "warning: Forcing checkout of %s.\n", new->name); + warning("You appear to be on a branch yet to be born."); + warning("Forcing checkout of %s.", new->name); } opts->force = 1; } @@@ -553,14 -568,6 +553,14 @@@ if (ret) return ret; + /* + * If we were on a detached HEAD, but have now moved to + * a new commit, we want to mention the old commit once more + * to remind the user that it might be lost. + */ + if (!opts->quiet && !old.path && old.commit && new->commit != old.commit) + describe_detached_head("Previous HEAD position was", old.commit); + update_refs_for_switch(opts, &old, new); ret = post_checkout_hook(old.commit, new->commit, 1); @@@ -664,9 -671,6 +664,9 @@@ int cmd_checkout(int argc, const char * arg = argv[0]; has_dash_dash = (argc > 1) && !strcmp(argv[1], "--"); + if (!strcmp(arg, "-")) + arg = "@{-1}"; + if (get_sha1(arg, rev)) { if (has_dash_dash) /* case (1) */ die("invalid reference: %s", arg); @@@ -731,11 -735,12 +731,11 @@@ no_reference if (opts.new_branch) { struct strbuf buf = STRBUF_INIT; - strbuf_addstr(&buf, "refs/heads/"); - strbuf_addstr(&buf, opts.new_branch); + if (strbuf_check_branch_ref(&buf, opts.new_branch)) + die("git checkout: we do not like '%s' as a branch name.", + opts.new_branch); if (!get_sha1(buf.buf, rev)) die("git checkout: branch %s already exists", opts.new_branch); - if (check_ref_format(buf.buf)) - die("git checkout: we do not like '%s' as a branch name.", opts.new_branch); strbuf_release(&buf); } diff --combined diff-lib.c index a310fb2ad,d230efc14..0aba6cda3 --- a/diff-lib.c +++ b/diff-lib.c @@@ -31,7 -31,7 +31,7 @@@ static int check_removed(const struct c return -1; return 1; } - if (has_symlink_leading_path(ce_namelen(ce), ce->name)) + if (has_symlink_leading_path(ce->name, ce_namelen(ce))) return 1; if (S_ISDIR(st->st_mode)) { unsigned char sub[20]; @@@ -61,12 -61,14 +61,12 @@@ int run_diff_files(struct rev_info *rev int silent_on_removed = option & DIFF_SILENT_ON_REMOVED; unsigned ce_option = ((option & DIFF_RACY_IS_MODIFIED) ? CE_MATCH_RACY_IS_DIRTY : 0); - char symcache[PATH_MAX]; diff_set_mnemonic_prefix(&revs->diffopt, "i/", "w/"); if (diff_unmerged_stage < 0) diff_unmerged_stage = 2; entries = active_nr; - symcache[0] = '\0'; for (i = 0; i < entries; i++) { struct stat st; unsigned int oldmode, newmode; @@@ -196,6 -198,11 +196,6 @@@ * diff-index */ -struct oneway_unpack_data { - struct rev_info *revs; - char symcache[PATH_MAX]; -}; - /* A file entry went away or appeared */ static void diff_index_show_file(struct rev_info *revs, const char *prefix, @@@ -209,12 -216,13 +209,12 @@@ static int get_stat_data(struct cache_entry *ce, const unsigned char **sha1p, unsigned int *modep, - int cached, int match_missing, - struct oneway_unpack_data *cbdata) + int cached, int match_missing) { const unsigned char *sha1 = ce->sha1; unsigned int mode = ce->ce_mode; - if (!cached) { + if (!cached && !ce_uptodate(ce)) { int changed; struct stat st; changed = check_removed(ce, &st); @@@ -240,24 -248,25 +240,24 @@@ return 0; } -static void show_new_file(struct oneway_unpack_data *cbdata, +static void show_new_file(struct rev_info *revs, struct cache_entry *new, int cached, int match_missing) { const unsigned char *sha1; unsigned int mode; - struct rev_info *revs = cbdata->revs; /* * New file in the index: it might actually be different in * the working copy. */ - if (get_stat_data(new, &sha1, &mode, cached, match_missing, cbdata) < 0) + if (get_stat_data(new, &sha1, &mode, cached, match_missing) < 0) return; diff_index_show_file(revs, "+", new, sha1, mode); } -static int show_modified(struct oneway_unpack_data *cbdata, +static int show_modified(struct rev_info *revs, struct cache_entry *old, struct cache_entry *new, int report_missing, @@@ -265,8 -274,9 +265,8 @@@ { unsigned int mode, oldmode; const unsigned char *sha1; - struct rev_info *revs = cbdata->revs; - if (get_stat_data(new, &sha1, &mode, cached, match_missing, cbdata) < 0) { + if (get_stat_data(new, &sha1, &mode, cached, match_missing) < 0) { if (report_missing) diff_index_show_file(revs, "-", old, old->sha1, old->ce_mode); @@@ -334,7 -344,8 +334,7 @@@ static void do_oneway_diff(struct unpac struct cache_entry *idx, struct cache_entry *tree) { - struct oneway_unpack_data *cbdata = o->unpack_data; - struct rev_info *revs = cbdata->revs; + struct rev_info *revs = o->unpack_data; int match_missing, cached; /* @@@ -357,7 -368,7 +357,7 @@@ * Something added to the tree? */ if (!tree) { - show_new_file(cbdata, idx, cached, match_missing); + show_new_file(revs, idx, cached, match_missing); return; } @@@ -370,7 -381,7 +370,7 @@@ } /* Show difference between old and new */ - show_modified(cbdata, tree, idx, 1, cached, match_missing); + show_modified(revs, tree, idx, 1, cached, match_missing); } static inline void skip_same_name(struct cache_entry *ce, struct unpack_trees_options *o) @@@ -407,7 -418,8 +407,7 @@@ static int oneway_diff(struct cache_ent { struct cache_entry *idx = src[0]; struct cache_entry *tree = src[1]; - struct oneway_unpack_data *cbdata = o->unpack_data; - struct rev_info *revs = cbdata->revs; + struct rev_info *revs = o->unpack_data; if (idx && ce_stage(idx)) skip_same_name(idx, o); @@@ -434,6 -446,7 +434,6 @@@ int run_diff_index(struct rev_info *rev const char *tree_name; struct unpack_trees_options opts; struct tree_desc t; - struct oneway_unpack_data unpack_cb; mark_merge_entries(); @@@ -443,12 -456,14 +443,12 @@@ if (!tree) return error("bad tree object %s", tree_name); - unpack_cb.revs = revs; - unpack_cb.symcache[0] = '\0'; memset(&opts, 0, sizeof(opts)); opts.head_idx = 1; opts.index_only = cached; opts.merge = 1; opts.fn = oneway_diff; - opts.unpack_data = &unpack_cb; + opts.unpack_data = revs; opts.src_index = &the_index; opts.dst_index = NULL; @@@ -471,6 -486,7 +471,6 @@@ int do_diff_cache(const unsigned char * struct cache_entry *last = NULL; struct unpack_trees_options opts; struct tree_desc t; - struct oneway_unpack_data unpack_cb; /* * This is used by git-blame to run diff-cache internally; @@@ -499,12 -515,14 +499,12 @@@ if (!tree) die("bad tree object %s", sha1_to_hex(tree_sha1)); - unpack_cb.revs = &revs; - unpack_cb.symcache[0] = '\0'; memset(&opts, 0, sizeof(opts)); opts.head_idx = 1; opts.index_only = 1; opts.merge = 1; opts.fn = oneway_diff; - opts.unpack_data = &unpack_cb; + opts.unpack_data = &revs; opts.src_index = &the_index; opts.dst_index = &the_index; @@@ -513,18 -531,3 +513,18 @@@ exit(128); return 0; } + +int index_differs_from(const char *def, int diff_flags) +{ + struct rev_info rev; + + init_revisions(&rev, NULL); + setup_revisions(0, NULL, &rev, def); + DIFF_OPT_SET(&rev.diffopt, QUIET); + DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS); + rev.diffopt.flags |= diff_flags; + run_diff_index(&rev, 1); + if (rev.pending.alloc) + free(rev.pending.objects); + return (DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES) != 0); +}