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authorNguyễn Thái Ngọc Duy <pclouds@gmail.com>2013-07-09 22:29:00 +0700
committerJunio C Hamano <gitster@pobox.com>2013-07-09 09:12:48 -0700
commit9c5e6c802cde9881785b7f1b3278b97be4aabd82 (patch)
tree2eeb9fb013fffc711464d83141690fde1c72ce82 /dir.c
parentf8abaebab3fe1a1b873f9636ea410ac4007c8fa8 (diff)
downloadgit-9c5e6c802cde9881785b7f1b3278b97be4aabd82.tar.gz
Convert "struct cache_entry *" to "const ..." wherever possiblend/const-struct-cache-entry
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 'dir.c')
-rw-r--r--dir.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/dir.c b/dir.c
index 897c87403e..bb1f4e4295 100644
--- a/dir.c
+++ b/dir.c
@@ -933,7 +933,7 @@ enum exist_status {
*/
static enum exist_status directory_exists_in_index_icase(const char *dirname, int len)
{
- struct cache_entry *ce = index_name_exists(&the_index, dirname, len + 1, ignore_case);
+ const struct cache_entry *ce = index_name_exists(&the_index, dirname, len + 1, ignore_case);
unsigned char endchar;
if (!ce)
@@ -977,7 +977,7 @@ static enum exist_status directory_exists_in_index(const char *dirname, int len)
if (pos < 0)
pos = -pos-1;
while (pos < active_nr) {
- struct cache_entry *ce = active_cache[pos++];
+ const struct cache_entry *ce = active_cache[pos++];
unsigned char endchar;
if (strncmp(ce->name, dirname, len))
@@ -1115,7 +1115,7 @@ static int exclude_matches_pathspec(const char *path, int len,
static int get_index_dtype(const char *path, int len)
{
int pos;
- struct cache_entry *ce;
+ const struct cache_entry *ce;
ce = cache_name_exists(path, len, 0);
if (ce) {