diff options
author | Nguyễn Thái Ngọc Duy <pclouds@gmail.com> | 2013-07-09 19:29:00 +0400 |
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committer | Junio C Hamano <gitster@pobox.com> | 2013-07-09 20:12:48 +0400 |
commit | 9c5e6c802cde9881785b7f1b3278b97be4aabd82 (patch) | |
tree | 2eeb9fb013fffc711464d83141690fde1c72ce82 /builtin/grep.c | |
parent | f8abaebab3fe1a1b873f9636ea410ac4007c8fa8 (diff) |
Convert "struct cache_entry *" to "const ..." wherever possible
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 <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/grep.c')
-rw-r--r-- | builtin/grep.c | 2 |
1 files changed, 1 insertions, 1 deletions
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)) |