From: Junio C Hamano Date: Thu, 8 Mar 2018 20:36:30 +0000 (-0800) Subject: Merge branch 'bp/untracked-cache-noflush' X-Git-Tag: v2.17.0-rc0~21 X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/cdda65acae0b05a197c9f6684d517a5c4325c08f?hp=-c Merge branch 'bp/untracked-cache-noflush' Writing out the index file when the only thing that changed in it is the untracked cache information is often wasteful, and this has been optimized out. * bp/untracked-cache-noflush: untracked cache: use git_env_bool() not getenv() for customization dir.c: don't flag the index as dirty for changes to the untracked cache --- cdda65acae0b05a197c9f6684d517a5c4325c08f diff --combined dir.c index 6dd91be818,d445d77e62..dedbf5d476 --- a/dir.c +++ b/dir.c @@@ -231,10 -231,12 +231,10 @@@ int within_depth(const char *name, int * 1 along with { data, size } of the (possibly augmented) buffer * when successful. * - * Optionally updates the given sha1_stat with the given OID (when valid). + * Optionally updates the given oid_stat with the given OID (when valid). */ -static int do_read_blob(const struct object_id *oid, - struct sha1_stat *sha1_stat, - size_t *size_out, - char **data_out) +static int do_read_blob(const struct object_id *oid, struct oid_stat *oid_stat, + size_t *size_out, char **data_out) { enum object_type type; unsigned long sz; @@@ -249,9 -251,9 +249,9 @@@ return -1; } - if (sha1_stat) { - memset(&sha1_stat->stat, 0, sizeof(sha1_stat->stat)); - hashcpy(sha1_stat->sha1, oid->hash); + if (oid_stat) { + memset(&oid_stat->stat, 0, sizeof(oid_stat->stat)); + oidcpy(&oid_stat->oid, oid); } if (sz == 0) { @@@ -652,8 -654,9 +652,8 @@@ void add_exclude(const char *string, co static int read_skip_worktree_file_from_index(const struct index_state *istate, const char *path, - size_t *size_out, - char **data_out, - struct sha1_stat *sha1_stat) + size_t *size_out, char **data_out, + struct oid_stat *oid_stat) { int pos, len; @@@ -664,7 -667,7 +664,7 @@@ if (!ce_skip_worktree(istate->cache[pos])) return -1; - return do_read_blob(&istate->cache[pos]->oid, sha1_stat, size_out, data_out); + return do_read_blob(&istate->cache[pos]->oid, oid_stat, size_out, data_out); } /* @@@ -744,8 -747,8 +744,8 @@@ static struct untracked_cache_dir *look FLEX_ALLOC_MEM(d, name, name, len); ALLOC_GROW(dir->dirs, dir->dirs_nr + 1, dir->dirs_alloc); - memmove(dir->dirs + first + 1, dir->dirs + first, - (dir->dirs_nr - first) * sizeof(*dir->dirs)); + MOVE_ARRAY(dir->dirs + first + 1, dir->dirs + first, + dir->dirs_nr - first); dir->dirs_nr++; dir->dirs[first] = d; return d; @@@ -771,16 -774,7 +771,16 @@@ static void invalidate_directory(struc struct untracked_cache_dir *dir) { int i; - uc->dir_invalidated++; + + /* + * Invalidation increment here is just roughly correct. If + * untracked_nr or any of dirs[].recurse is non-zero, we + * should increment dir_invalidated too. But that's more + * expensive to do. + */ + if (dir->valid) + uc->dir_invalidated++; + dir->valid = 0; dir->untracked_nr = 0; for (i = 0; i < dir->dirs_nr; i++) @@@ -801,8 -795,9 +801,8 @@@ static int add_excludes_from_buffer(cha * ss_valid is non-zero, "ss" must contain good value as input. */ static int add_excludes(const char *fname, const char *base, int baselen, - struct exclude_list *el, - struct index_state *istate, - struct sha1_stat *sha1_stat) + struct exclude_list *el, struct index_state *istate, + struct oid_stat *oid_stat) { struct stat st; int r; @@@ -820,16 -815,16 +820,16 @@@ return -1; r = read_skip_worktree_file_from_index(istate, fname, &size, &buf, - sha1_stat); + oid_stat); if (r != 1) return r; } else { size = xsize_t(st.st_size); if (size == 0) { - if (sha1_stat) { - fill_stat_data(&sha1_stat->stat, &st); - hashcpy(sha1_stat->sha1, EMPTY_BLOB_SHA1_BIN); - sha1_stat->valid = 1; + if (oid_stat) { + fill_stat_data(&oid_stat->stat, &st); + oidcpy(&oid_stat->oid, &empty_blob_oid); + oid_stat->valid = 1; } close(fd); return 0; @@@ -842,23 -837,22 +842,23 @@@ } buf[size++] = '\n'; close(fd); - if (sha1_stat) { + if (oid_stat) { int pos; - if (sha1_stat->valid && - !match_stat_data_racy(istate, &sha1_stat->stat, &st)) + if (oid_stat->valid && + !match_stat_data_racy(istate, &oid_stat->stat, &st)) ; /* no content change, ss->sha1 still good */ else if (istate && (pos = index_name_pos(istate, fname, strlen(fname))) >= 0 && !ce_stage(istate->cache[pos]) && ce_uptodate(istate->cache[pos]) && !would_convert_to_git(istate, fname)) - hashcpy(sha1_stat->sha1, - istate->cache[pos]->oid.hash); + oidcpy(&oid_stat->oid, + &istate->cache[pos]->oid); else - hash_sha1_file(buf, size, "blob", sha1_stat->sha1); - fill_stat_data(&sha1_stat->stat, &st); - sha1_stat->valid = 1; + hash_object_file(buf, size, "blob", + &oid_stat->oid); + fill_stat_data(&oid_stat->stat, &st); + oid_stat->valid = 1; } } @@@ -936,7 -930,7 +936,7 @@@ struct exclude_list *add_exclude_list(s * Used to set up core.excludesfile and .git/info/exclude lists. */ static void add_excludes_from_file_1(struct dir_struct *dir, const char *fname, - struct sha1_stat *sha1_stat) + struct oid_stat *oid_stat) { struct exclude_list *el; /* @@@ -947,7 -941,7 +947,7 @@@ if (!dir->untracked) dir->unmanaged_exclude_files++; el = add_exclude_list(dir, EXC_FILE, fname); - if (add_excludes(fname, "", 0, el, NULL, sha1_stat) < 0) + if (add_excludes(fname, "", 0, el, NULL, oid_stat) < 0) die("cannot use %s as an exclude file", fname); } @@@ -1186,7 -1180,7 +1186,7 @@@ static void prep_exclude(struct dir_str while (current < baselen) { const char *cp; - struct sha1_stat sha1_stat; + struct oid_stat oid_stat; stk = xcalloc(1, sizeof(*stk)); if (current < 0) { @@@ -1229,8 -1223,8 +1229,8 @@@ } /* Try to read per-directory file */ - hashclr(sha1_stat.sha1); - sha1_stat.valid = 0; + oidclr(&oid_stat.oid); + oid_stat.valid = 0; if (dir->exclude_per_dir && /* * If we know that no files have been added in @@@ -1258,7 -1252,7 +1258,7 @@@ strbuf_addstr(&sb, dir->exclude_per_dir); el->src = strbuf_detach(&sb, NULL); add_excludes(el->src, el->src, stk->baselen, el, istate, - untracked ? &sha1_stat : NULL); + untracked ? &oid_stat : NULL); } /* * NEEDSWORK: when untracked cache is enabled, prep_exclude() @@@ -1275,9 -1269,9 +1275,9 @@@ * order, though, if you do that. */ if (untracked && - hashcmp(sha1_stat.sha1, untracked->exclude_sha1)) { + hashcmp(oid_stat.oid.hash, untracked->exclude_sha1)) { invalidate_gitignore(dir->untracked, untracked); - hashcpy(untracked->exclude_sha1, sha1_stat.sha1); + hashcpy(untracked->exclude_sha1, oid_stat.oid.hash); } dir->exclude_stack = stk; current = stk->baselen; @@@ -1779,7 -1773,7 +1779,7 @@@ static enum path_treatment treat_path(s if (!de) return treat_path_fast(dir, untracked, cdir, istate, path, baselen, pathspec); - if (is_dot_or_dotdot(de->d_name) || !strcmp(de->d_name, ".git")) + if (is_dot_or_dotdot(de->d_name) || !fspathcmp(de->d_name, ".git")) return path_none; strbuf_setlen(path, baselen); strbuf_addstr(path, de->d_name); @@@ -1815,19 -1809,24 +1815,19 @@@ static int valid_cached_dir(struct dir_ */ refresh_fsmonitor(istate); if (!(dir->untracked->use_fsmonitor && untracked->valid)) { - if (stat(path->len ? path->buf : ".", &st)) { - invalidate_directory(dir->untracked, untracked); + if (lstat(path->len ? path->buf : ".", &st)) { memset(&untracked->stat_data, 0, sizeof(untracked->stat_data)); return 0; } if (!untracked->valid || match_stat_data_racy(istate, &untracked->stat_data, &st)) { - if (untracked->valid) - invalidate_directory(dir->untracked, untracked); fill_stat_data(&untracked->stat_data, &st); return 0; } } - if (untracked->check_only != !!check_only) { - invalidate_directory(dir->untracked, untracked); + if (untracked->check_only != !!check_only) return 0; - } /* * prep_exclude will be called eventually on this directory, @@@ -1854,20 -1853,13 +1854,20 @@@ static int open_cached_dir(struct cache struct strbuf *path, int check_only) { + const char *c_path; + memset(cdir, 0, sizeof(*cdir)); cdir->untracked = untracked; if (valid_cached_dir(dir, untracked, istate, path, check_only)) return 0; - cdir->fdir = opendir(path->len ? path->buf : "."); - if (dir->untracked) + c_path = path->len ? path->buf : "."; + cdir->fdir = opendir(c_path); + if (!cdir->fdir) + warning_errno(_("could not open directory '%s'"), c_path); + if (dir->untracked) { + invalidate_directory(dir->untracked, untracked); dir->untracked->dir_opened++; + } if (!cdir->fdir) return -1; return 0; @@@ -2172,8 -2164,13 +2172,13 @@@ static struct untracked_cache_dir *vali const struct pathspec *pathspec) { struct untracked_cache_dir *root; + static int untracked_cache_disabled = -1; - if (!dir->untracked || getenv("GIT_DISABLE_UNTRACKED_CACHE")) + if (!dir->untracked) + return NULL; + if (untracked_cache_disabled < 0) + untracked_cache_disabled = git_env_bool("GIT_DISABLE_UNTRACKED_CACHE", 0); + if (untracked_cache_disabled) return NULL; /* @@@ -2236,13 -2233,13 +2241,13 @@@ /* Validate $GIT_DIR/info/exclude and core.excludesfile */ root = dir->untracked->root; - if (hashcmp(dir->ss_info_exclude.sha1, - dir->untracked->ss_info_exclude.sha1)) { + if (oidcmp(&dir->ss_info_exclude.oid, + &dir->untracked->ss_info_exclude.oid)) { invalidate_gitignore(dir->untracked, root); dir->untracked->ss_info_exclude = dir->ss_info_exclude; } - if (hashcmp(dir->ss_excludes_file.sha1, - dir->untracked->ss_excludes_file.sha1)) { + if (oidcmp(&dir->ss_excludes_file.oid, + &dir->untracked->ss_excludes_file.oid)) { invalidate_gitignore(dir->untracked, root); dir->untracked->ss_excludes_file = dir->ss_excludes_file; } @@@ -2256,7 -2253,6 +2261,7 @@@ int read_directory(struct dir_struct *d const char *path, int len, const struct pathspec *pathspec) { struct untracked_cache_dir *untracked; + uint64_t start = getnanotime(); if (has_symlink_leading_path(path, len)) return dir->nr; @@@ -2295,9 -2291,13 +2300,14 @@@ dir->nr = i; } + trace_performance_since(start, "read directory %.*s", len, path); if (dir->untracked) { + static int force_untracked_cache = -1; static struct trace_key trace_untracked_stats = TRACE_KEY_INIT(UNTRACKED_STATS); + + if (force_untracked_cache < 0) + force_untracked_cache = + git_env_bool("GIT_FORCE_UNTRACKED_CACHE", 0); trace_printf_key(&trace_untracked_stats, "node creation: %u\n" "gitignore invalidation: %u\n" @@@ -2307,7 -2307,8 +2317,8 @@@ dir->untracked->gitignore_invalidated, dir->untracked->dir_invalidated, dir->untracked->dir_opened); - if (dir->untracked == istate->untracked && + if (force_untracked_cache && + dir->untracked == istate->untracked && (dir->untracked->dir_opened || dir->untracked->gitignore_invalidated || dir->untracked->dir_invalidated)) @@@ -2648,8 -2649,8 +2659,8 @@@ void write_untracked_extension(struct s FLEX_ALLOC_MEM(ouc, exclude_per_dir, untracked->exclude_per_dir, len); stat_data_to_disk(&ouc->info_exclude_stat, &untracked->ss_info_exclude.stat); stat_data_to_disk(&ouc->excludes_file_stat, &untracked->ss_excludes_file.stat); - hashcpy(ouc->info_exclude_sha1, untracked->ss_info_exclude.sha1); - hashcpy(ouc->excludes_file_sha1, untracked->ss_excludes_file.sha1); + hashcpy(ouc->info_exclude_sha1, untracked->ss_info_exclude.oid.hash); + hashcpy(ouc->excludes_file_sha1, untracked->ss_excludes_file.oid.hash); ouc->dir_flags = htonl(untracked->dir_flags); varint_len = encode_varint(untracked->ident.len, varbuf); @@@ -2826,12 -2827,13 +2837,12 @@@ static void read_sha1(size_t pos, void rd->data += 20; } -static void load_sha1_stat(struct sha1_stat *sha1_stat, - const unsigned char *data, - const unsigned char *sha1) +static void load_oid_stat(struct oid_stat *oid_stat, const unsigned char *data, + const unsigned char *sha1) { - stat_data_from_disk(&sha1_stat->stat, data); - hashcpy(sha1_stat->sha1, sha1); - sha1_stat->valid = 1; + stat_data_from_disk(&oid_stat->stat, data); + hashcpy(oid_stat->oid.hash, sha1); + oid_stat->valid = 1; } struct untracked_cache *read_untracked_extension(const void *data, unsigned long sz) @@@ -2859,12 -2861,12 +2870,12 @@@ uc = xcalloc(1, sizeof(*uc)); strbuf_init(&uc->ident, ident_len); strbuf_add(&uc->ident, ident, ident_len); - load_sha1_stat(&uc->ss_info_exclude, - next + ouc_offset(info_exclude_stat), - next + ouc_offset(info_exclude_sha1)); - load_sha1_stat(&uc->ss_excludes_file, - next + ouc_offset(excludes_file_stat), - next + ouc_offset(excludes_file_sha1)); + load_oid_stat(&uc->ss_info_exclude, + next + ouc_offset(info_exclude_stat), + next + ouc_offset(info_exclude_sha1)); + load_oid_stat(&uc->ss_excludes_file, + next + ouc_offset(excludes_file_stat), + next + ouc_offset(excludes_file_sha1)); uc->dir_flags = get_be32(next + ouc_offset(dir_flags)); exclude_per_dir = (const char *)next + ouc_offset(exclude_per_dir); uc->exclude_per_dir = xstrdup(exclude_per_dir); @@@ -2977,12 -2979,10 +2988,12 @@@ static int invalidate_one_component(str } void untracked_cache_invalidate_path(struct index_state *istate, - const char *path) + const char *path, int safe_path) { if (!istate->untracked || !istate->untracked->root) return; + if (!safe_path && !verify_path(path)) + return; invalidate_one_component(istate->untracked, istate->untracked->root, path, strlen(path)); } @@@ -2990,13 -2990,13 +3001,13 @@@ void untracked_cache_remove_from_index(struct index_state *istate, const char *path) { - untracked_cache_invalidate_path(istate, path); + untracked_cache_invalidate_path(istate, path, 1); } void untracked_cache_add_to_index(struct index_state *istate, const char *path) { - untracked_cache_invalidate_path(istate, path); + untracked_cache_invalidate_path(istate, path, 1); } /* Update gitfile and core.worktree setting to connect work tree and git dir */ diff --combined t/t7063-status-untracked-cache.sh index 46b947824f,9cb16ca36d..c61e304e97 --- a/t/t7063-status-untracked-cache.sh +++ b/t/t7063-status-untracked-cache.sh @@@ -14,6 -14,9 +14,9 @@@ test_description='test untracked cache # See <20160803174522.5571-1-pclouds@gmail.com> if you want to know # more. + GIT_FORCE_UNTRACKED_CACHE=true + export GIT_FORCE_UNTRACKED_CACHE + sync_mtime () { find . -type d -ls >/dev/null } @@@ -22,12 -25,6 +25,12 @@@ avoid_racy() sleep 1 } +status_is_clean() { + >../status.expect && + git status --porcelain >../status.actual && + test_cmp ../status.expect ../status.actual +} + test_lazy_prereq UNTRACKED_CACHE ' { git update-index --test-untracked-cache; ret=$?; } && test $ret -ne 1 @@@ -689,85 -686,4 +692,85 @@@ test_expect_success 'untracked cache su test_cmp ../before ../after ' +test_expect_success 'teardown worktree' ' + cd .. +' + +test_expect_success SYMLINKS 'setup worktree for symlink test' ' + git init worktree-symlink && + cd worktree-symlink && + git config core.untrackedCache true && + mkdir one two && + touch one/file two/file && + git add one/file two/file && + git commit -m"first commit" && + git rm -rf one && + ln -s two one && + git add one && + git commit -m"second commit" +' + +test_expect_success SYMLINKS '"status" after symlink replacement should be clean with UC=true' ' + git checkout HEAD~ && + status_is_clean && + status_is_clean && + git checkout master && + avoid_racy && + status_is_clean && + status_is_clean +' + +test_expect_success SYMLINKS '"status" after symlink replacement should be clean with UC=false' ' + git config core.untrackedCache false && + git checkout HEAD~ && + status_is_clean && + status_is_clean && + git checkout master && + avoid_racy && + status_is_clean && + status_is_clean +' + +test_expect_success 'setup worktree for non-symlink test' ' + git init worktree-non-symlink && + cd worktree-non-symlink && + git config core.untrackedCache true && + mkdir one two && + touch one/file two/file && + git add one/file two/file && + git commit -m"first commit" && + git rm -rf one && + cp two/file one && + git add one && + git commit -m"second commit" +' + +test_expect_success '"status" after file replacement should be clean with UC=true' ' + git checkout HEAD~ && + status_is_clean && + status_is_clean && + git checkout master && + avoid_racy && + status_is_clean && + test-dump-untracked-cache >../actual && + grep -F "recurse valid" ../actual >../actual.grep && + cat >../expect.grep <