From 9c5e6c802cde9881785b7f1b3278b97be4aabd82 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Date: Tue, 9 Jul 2013 22:29:00 +0700 Subject: Convert "struct cache_entry *" to "const ..." wherever possible MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit I attempted to make index_state->cache[] a "const struct cache_entry **" to find out how existing entries in index are modified and where. The question I have is what do we do if we really need to keep track of on-disk changes in the index. The result is - diff-lib.c: setting CE_UPTODATE - name-hash.c: setting CE_HASHED - preload-index.c, read-cache.c, unpack-trees.c and builtin/update-index: obvious - entry.c: write_entry() may refresh the checked out entry via fill_stat_cache_info(). This causes "non-const struct cache_entry *" in builtin/apply.c, builtin/checkout-index.c and builtin/checkout.c - builtin/ls-files.c: --with-tree changes stagemask and may set CE_UPDATE Of these, write_entry() and its call sites are probably most interesting because it modifies on-disk info. But this is stat info and can be retrieved via refresh, at least for porcelain commands. Other just uses ce_flags for local purposes. So, keeping track of "dirty" entries is just a matter of setting a flag in index modification functions exposed by read-cache.c. Except unpack-trees, the rest of the code base does not do anything funny behind read-cache's back. The actual patch is less valueable than the summary above. But if anyone wants to re-identify the above sites. Applying this patch, then this: diff --git a/cache.h b/cache.h index 430d021..1692891 100644 --- a/cache.h +++ b/cache.h @@ -267,7 +267,7 @@ static inline unsigned int canon_mode(unsigned int mode) #define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1) struct index_state { - struct cache_entry **cache; + const struct cache_entry **cache; unsigned int version; unsigned int cache_nr, cache_alloc, cache_changed; struct string_list *resolve_undo; will help quickly identify them without bogus warnings. Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano --- builtin/apply.c | 13 +++++++------ builtin/checkout.c | 8 ++++---- builtin/clean.c | 2 +- builtin/commit.c | 2 +- builtin/grep.c | 2 +- builtin/ls-files.c | 12 ++++++------ builtin/merge-index.c | 4 ++-- builtin/merge.c | 2 +- builtin/rm.c | 6 +++--- builtin/update-index.c | 14 +++++++------- 10 files changed, 33 insertions(+), 32 deletions(-) (limited to 'builtin') diff --git a/builtin/apply.c b/builtin/apply.c index 0e9b631db6..023bb3aada 100644 --- a/builtin/apply.c +++ b/builtin/apply.c @@ -2999,7 +2999,7 @@ static int read_blob_object(struct strbuf *buf, const unsigned char *sha1, unsig return 0; } -static int read_file_or_gitlink(struct cache_entry *ce, struct strbuf *buf) +static int read_file_or_gitlink(const struct cache_entry *ce, struct strbuf *buf) { if (!ce) return 0; @@ -3117,7 +3117,7 @@ static struct patch *previous_patch(struct patch *patch, int *gone) return previous; } -static int verify_index_match(struct cache_entry *ce, struct stat *st) +static int verify_index_match(const struct cache_entry *ce, struct stat *st) { if (S_ISGITLINK(ce->ce_mode)) { if (!S_ISDIR(st->st_mode)) @@ -3130,7 +3130,7 @@ static int verify_index_match(struct cache_entry *ce, struct stat *st) #define SUBMODULE_PATCH_WITHOUT_INDEX 1 static int load_patch_target(struct strbuf *buf, - struct cache_entry *ce, + const struct cache_entry *ce, struct stat *st, const char *name, unsigned expected_mode) @@ -3160,7 +3160,8 @@ static int load_patch_target(struct strbuf *buf, * we read from the result of a previous diff. */ static int load_preimage(struct image *image, - struct patch *patch, struct stat *st, struct cache_entry *ce) + struct patch *patch, struct stat *st, + const struct cache_entry *ce) { struct strbuf buf = STRBUF_INIT; size_t len; @@ -3273,7 +3274,7 @@ static int load_current(struct image *image, struct patch *patch) } static int try_threeway(struct image *image, struct patch *patch, - struct stat *st, struct cache_entry *ce) + struct stat *st, const struct cache_entry *ce) { unsigned char pre_sha1[20], post_sha1[20], our_sha1[20]; struct strbuf buf = STRBUF_INIT; @@ -3343,7 +3344,7 @@ static int try_threeway(struct image *image, struct patch *patch, return 0; } -static int apply_data(struct patch *patch, struct stat *st, struct cache_entry *ce) +static int apply_data(struct patch *patch, struct stat *st, const struct cache_entry *ce) { struct image image; diff --git a/builtin/checkout.c b/builtin/checkout.c index 3be0018821..69f9efa757 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -97,7 +97,7 @@ static int read_tree_some(struct tree *tree, const char **pathspec) return 0; } -static int skip_same_name(struct cache_entry *ce, int pos) +static int skip_same_name(const struct cache_entry *ce, int pos) { while (++pos < active_nr && !strcmp(active_cache[pos]->name, ce->name)) @@ -105,7 +105,7 @@ static int skip_same_name(struct cache_entry *ce, int pos) return pos; } -static int check_stage(int stage, struct cache_entry *ce, int pos) +static int check_stage(int stage, const struct cache_entry *ce, int pos) { while (pos < active_nr && !strcmp(active_cache[pos]->name, ce->name)) { @@ -119,7 +119,7 @@ static int check_stage(int stage, struct cache_entry *ce, int pos) return error(_("path '%s' does not have their version"), ce->name); } -static int check_stages(unsigned stages, struct cache_entry *ce, int pos) +static int check_stages(unsigned stages, const struct cache_entry *ce, int pos) { unsigned seen = 0; const char *name = ce->name; @@ -321,7 +321,7 @@ static int checkout_paths(const struct checkout_opts *opts, /* Any unmerged paths? */ for (pos = 0; pos < active_nr; pos++) { - struct cache_entry *ce = active_cache[pos]; + const struct cache_entry *ce = active_cache[pos]; if (ce->ce_flags & CE_MATCHED) { if (!ce_stage(ce)) continue; diff --git a/builtin/clean.c b/builtin/clean.c index 04e396b17a..e344137ef2 100644 --- a/builtin/clean.c +++ b/builtin/clean.c @@ -221,7 +221,7 @@ int cmd_clean(int argc, const char **argv, const char *prefix) struct dir_entry *ent = dir.entries[i]; int len, pos; int matches = 0; - struct cache_entry *ce; + const struct cache_entry *ce; struct stat st; /* diff --git a/builtin/commit.c b/builtin/commit.c index 6b693c16d8..c9cbb811b0 100644 --- a/builtin/commit.c +++ b/builtin/commit.c @@ -205,7 +205,7 @@ static int list_paths(struct string_list *list, const char *with_tree, } for (i = 0; i < active_nr; i++) { - struct cache_entry *ce = active_cache[i]; + const struct cache_entry *ce = active_cache[i]; struct string_list_item *item; if (ce->ce_flags & CE_UPDATE) diff --git a/builtin/grep.c b/builtin/grep.c index 159e65d47a..0223d701a6 100644 --- a/builtin/grep.c +++ b/builtin/grep.c @@ -376,7 +376,7 @@ static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int read_cache(); for (nr = 0; nr < active_nr; nr++) { - struct cache_entry *ce = active_cache[nr]; + const struct cache_entry *ce = active_cache[nr]; if (!S_ISREG(ce->ce_mode)) continue; if (!match_pathspec_depth(pathspec, ce->name, ce_namelen(ce), 0, NULL)) diff --git a/builtin/ls-files.c b/builtin/ls-files.c index 3a410c35d9..80fff23ad9 100644 --- a/builtin/ls-files.c +++ b/builtin/ls-files.c @@ -127,7 +127,7 @@ static void show_killed_files(struct dir_struct *dir) } } -static void show_ce_entry(const char *tag, struct cache_entry *ce) +static void show_ce_entry(const char *tag, const struct cache_entry *ce) { int len = max_prefix_len; @@ -165,7 +165,7 @@ static void show_ce_entry(const char *tag, struct cache_entry *ce) } write_name(ce->name, ce_namelen(ce)); if (debug_mode) { - struct stat_data *sd = &ce->ce_stat_data; + const struct stat_data *sd = &ce->ce_stat_data; printf(" ctime: %d:%d\n", sd->sd_ctime.sec, sd->sd_ctime.nsec); printf(" mtime: %d:%d\n", sd->sd_mtime.sec, sd->sd_mtime.nsec); @@ -203,7 +203,7 @@ static void show_ru_info(void) } } -static int ce_excluded(struct dir_struct *dir, struct cache_entry *ce) +static int ce_excluded(struct dir_struct *dir, const struct cache_entry *ce) { int dtype = ce_to_dtype(ce); return is_excluded(dir, ce->name, &dtype); @@ -223,7 +223,7 @@ static void show_files(struct dir_struct *dir) } if (show_cached || show_stage) { for (i = 0; i < active_nr; i++) { - struct cache_entry *ce = active_cache[i]; + const struct cache_entry *ce = active_cache[i]; if ((dir->flags & DIR_SHOW_IGNORED) && !ce_excluded(dir, ce)) continue; @@ -237,7 +237,7 @@ static void show_files(struct dir_struct *dir) } if (show_deleted || show_modified) { for (i = 0; i < active_nr; i++) { - struct cache_entry *ce = active_cache[i]; + const struct cache_entry *ce = active_cache[i]; struct stat st; int err; if ((dir->flags & DIR_SHOW_IGNORED) && @@ -273,7 +273,7 @@ static void prune_cache(const char *prefix) last = active_nr; while (last > first) { int next = (last + first) >> 1; - struct cache_entry *ce = active_cache[next]; + const struct cache_entry *ce = active_cache[next]; if (!strncmp(ce->name, prefix, max_prefix_len)) { first = next+1; continue; diff --git a/builtin/merge-index.c b/builtin/merge-index.c index be5e514324..b416d92849 100644 --- a/builtin/merge-index.c +++ b/builtin/merge-index.c @@ -16,7 +16,7 @@ static int merge_entry(int pos, const char *path) die("git merge-index: %s not in the cache", path); found = 0; do { - struct cache_entry *ce = active_cache[pos]; + const struct cache_entry *ce = active_cache[pos]; int stage = ce_stage(ce); if (strcmp(ce->name, path)) @@ -58,7 +58,7 @@ static void merge_all(void) { int i; for (i = 0; i < active_nr; i++) { - struct cache_entry *ce = active_cache[i]; + const struct cache_entry *ce = active_cache[i]; if (!ce_stage(ce)) continue; i += merge_entry(i, ce->name)-1; diff --git a/builtin/merge.c b/builtin/merge.c index 2ebe732896..74c0746a93 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -889,7 +889,7 @@ static int suggest_conflicts(int renormalizing) die_errno(_("Could not open '%s' for writing"), filename); fprintf(fp, "\nConflicts:\n"); for (pos = 0; pos < active_nr; pos++) { - struct cache_entry *ce = active_cache[pos]; + const struct cache_entry *ce = active_cache[pos]; if (ce_stage(ce)) { fprintf(fp, "\t%s\n", ce->name); diff --git a/builtin/rm.c b/builtin/rm.c index 06025a2e75..18916e022a 100644 --- a/builtin/rm.c +++ b/builtin/rm.c @@ -67,7 +67,7 @@ static int check_submodules_use_gitfiles(void) for (i = 0; i < list.nr; i++) { const char *name = list.entry[i].name; int pos; - struct cache_entry *ce; + const struct cache_entry *ce; struct stat st; pos = cache_name_pos(name, strlen(name)); @@ -120,7 +120,7 @@ static int check_local_mod(unsigned char *head, int index_only) for (i = 0; i < list.nr; i++) { struct stat st; int pos; - struct cache_entry *ce; + const struct cache_entry *ce; const char *name = list.entry[i].name; unsigned char sha1[20]; unsigned mode; @@ -321,7 +321,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix) seen = xcalloc(i, 1); for (i = 0; i < active_nr; i++) { - struct cache_entry *ce = active_cache[i]; + const struct cache_entry *ce = active_cache[i]; if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen)) continue; ALLOC_GROW(list.entry, list.nr + 1, list.alloc); diff --git a/builtin/update-index.c b/builtin/update-index.c index 5c7762eef4..c317981516 100644 --- a/builtin/update-index.c +++ b/builtin/update-index.c @@ -83,7 +83,7 @@ static int process_lstat_error(const char *path, int err) return error("lstat(\"%s\"): %s", path, strerror(errno)); } -static int add_one_path(struct cache_entry *old, const char *path, int len, struct stat *st) +static int add_one_path(const struct cache_entry *old, const char *path, int len, struct stat *st) { int option, size; struct cache_entry *ce; @@ -142,7 +142,7 @@ static int process_directory(const char *path, int len, struct stat *st) /* Exact match: file or existing gitlink */ if (pos >= 0) { - struct cache_entry *ce = active_cache[pos]; + const struct cache_entry *ce = active_cache[pos]; if (S_ISGITLINK(ce->ce_mode)) { /* Do nothing to the index if there is no HEAD! */ @@ -158,7 +158,7 @@ static int process_directory(const char *path, int len, struct stat *st) /* Inexact match: is there perhaps a subdirectory match? */ pos = -pos-1; while (pos < active_nr) { - struct cache_entry *ce = active_cache[pos++]; + const struct cache_entry *ce = active_cache[pos++]; if (strncmp(ce->name, path, len)) break; @@ -183,7 +183,7 @@ static int process_path(const char *path) { int pos, len; struct stat st; - struct cache_entry *ce; + const struct cache_entry *ce; len = strlen(path); if (has_symlink_leading_path(path, len)) @@ -448,7 +448,7 @@ static int unresolve_one(const char *path) /* already merged */ pos = unmerge_cache_entry_at(pos); if (pos < active_nr) { - struct cache_entry *ce = active_cache[pos]; + const struct cache_entry *ce = active_cache[pos]; if (ce_stage(ce) && ce_namelen(ce) == namelen && !memcmp(ce->name, path, namelen)) @@ -462,7 +462,7 @@ static int unresolve_one(const char *path) */ pos = -pos-1; if (pos < active_nr) { - struct cache_entry *ce = active_cache[pos]; + const struct cache_entry *ce = active_cache[pos]; if (ce_namelen(ce) == namelen && !memcmp(ce->name, path, namelen)) { fprintf(stderr, @@ -558,7 +558,7 @@ static int do_reupdate(int ac, const char **av, has_head = 0; redo: for (pos = 0; pos < active_nr; pos++) { - struct cache_entry *ce = active_cache[pos]; + const struct cache_entry *ce = active_cache[pos]; struct cache_entry *old = NULL; int save_nr; -- cgit v1.2.1