Commit c40641b77b0274186fd1b327d5dc3246f814aaaf, 'Optimize
symlink/directory detection' by Linus Torvalds, removed the 'char
*symcache' parameter to the has_symlink_leading_path() function. This
made all variables currently named 'symcache' inside diff-lib.c
unnecessary.
This also let us throw away the 'struct oneway_unpack_data', and
instead directly use the 'struct rev_info *revs' member, which
was the only member left after removal of the 'symcache[] array'
member. The 'struct oneway_unpack_data' was introduced by the
following commit:
948dd346 "diff-files: careful when inspecting work tree items"
Impact: cleanup
PATH_MAX bytes less memory stack usage in some cases
Signed-off-by: Kjetil Barvik <barvik@xxxxxxxxxxxx>
---
:100644 100644 ae96c64... e6d1d2b... M diff-lib.c
diff-lib.c | 40 +++++++++++-----------------------------
1 files changed, 11 insertions(+), 29 deletions(-)
diff --git a/diff-lib.c b/diff-lib.c
index ae96c64ca209f4df9008198e8a04b160bed618c7..e6d1d2b34147a13aadb5019e0c8336ef5f56ee39 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -61,14 +61,12 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
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;
@@ -198,11 +196,6 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
* 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,
@@ -216,8 +209,7 @@ static void diff_index_show_file(struct rev_info *revs,
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;
@@ -248,25 +240,24 @@ static int get_stat_data(struct cache_entry *ce,
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,
@@ -274,9 +265,8 @@ static int show_modified(struct oneway_unpack_data *cbdata,
{
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);
@@ -344,8 +334,7 @@ static void do_oneway_diff(struct unpack_trees_options *o,
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;
/*
@@ -368,7 +357,7 @@ static void do_oneway_diff(struct unpack_trees_options *o,
* Something added to the tree?
*/
if (!tree) {
- show_new_file(cbdata, idx, cached, match_missing);
+ show_new_file(revs, idx, cached, match_missing);
return;
}
@@ -381,7 +370,7 @@ static void do_oneway_diff(struct unpack_trees_options *o,
}
/* 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)
@@ -418,8 +407,7 @@ static int oneway_diff(struct cache_entry **src, struct unpack_trees_options *o)
{
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);
@@ -446,7 +434,6 @@ int run_diff_index(struct rev_info *revs, int cached)
const char *tree_name;
struct unpack_trees_options opts;
struct tree_desc t;
- struct oneway_unpack_data unpack_cb;
mark_merge_entries();
@@ -456,14 +443,12 @@ int run_diff_index(struct rev_info *revs, int cached)
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;
@@ -486,7 +471,6 @@ int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
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;
@@ -515,14 +499,12 @@ int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
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;
--
1.6.1.rc1.49.g7f705
--
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