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authorLars Knoll <lars@trolltech.com>2007-10-28 20:27:13 (GMT)
committerJunio C Hamano <gitster@pobox.com>2007-10-30 00:03:11 (GMT)
commit68492fc73b7387fa72d09545f5743728c5fdb419 (patch)
tree8c1ac604af1977d4373bed2c8b622126ccda27f7 /dir.c
parent79f3368d9a1bba022f38806b67c25ffffc0e7e92 (diff)
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Speedup scanning for excluded files.
Try to avoid a lot of work scanning for excluded files, by caching some more information when setting up the exclusion data structure. Speeds up 'git runstatus' on a repository containing the Qt sources by 30% and reduces the amount of instructions executed (as measured by valgrind) by a factor of 2. Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'dir.c')
-rw-r--r--dir.c59
1 files changed, 43 insertions, 16 deletions
diff --git a/dir.c b/dir.c
index 4c17d36..5bcc764 100644
--- a/dir.c
+++ b/dir.c
@@ -118,14 +118,32 @@ int match_pathspec(const char **pathspec, const char *name, int namelen, int pre
return retval;
}
+static int no_wildcard(const char *string)
+{
+ return string[strcspn(string, "*?[{")] == '\0';
+}
+
void add_exclude(const char *string, const char *base,
int baselen, struct exclude_list *which)
{
struct exclude *x = xmalloc(sizeof (*x));
+ x->to_exclude = 1;
+ if (*string == '!') {
+ x->to_exclude = 0;
+ string++;
+ }
x->pattern = string;
+ x->patternlen = strlen(string);
x->base = base;
x->baselen = baselen;
+ x->flags = 0;
+ if (!strchr(string, '/'))
+ x->flags |= EXC_FLAG_NODIR;
+ if (no_wildcard(string))
+ x->flags |= EXC_FLAG_NOWILDCARD;
+ if (*string == '*' && no_wildcard(string+1))
+ x->flags |= EXC_FLAG_ENDSWITH;
if (which->nr == which->alloc) {
which->alloc = alloc_nr(which->alloc);
which->excludes = xrealloc(which->excludes,
@@ -209,7 +227,7 @@ void pop_exclude_per_directory(struct dir_struct *dir, int stk)
* Return 1 for exclude, 0 for include and -1 for undecided.
*/
static int excluded_1(const char *pathname,
- int pathlen,
+ int pathlen, const char *basename,
struct exclude_list *el)
{
int i;
@@ -218,19 +236,21 @@ static int excluded_1(const char *pathname,
for (i = el->nr - 1; 0 <= i; i--) {
struct exclude *x = el->excludes[i];
const char *exclude = x->pattern;
- int to_exclude = 1;
+ int to_exclude = x->to_exclude;
- if (*exclude == '!') {
- to_exclude = 0;
- exclude++;
- }
-
- if (!strchr(exclude, '/')) {
+ if (x->flags & EXC_FLAG_NODIR) {
/* match basename */
- const char *basename = strrchr(pathname, '/');
- basename = (basename) ? basename+1 : pathname;
- if (fnmatch(exclude, basename, 0) == 0)
- return to_exclude;
+ if (x->flags & EXC_FLAG_NOWILDCARD) {
+ if (!strcmp(exclude, basename))
+ return to_exclude;
+ } else if (x->flags & EXC_FLAG_ENDSWITH) {
+ if (x->patternlen - 1 <= pathlen &&
+ !strcmp(exclude + 1, pathname + pathlen - x->patternlen + 1))
+ return to_exclude;
+ } else {
+ if (fnmatch(exclude, basename, 0) == 0)
+ return to_exclude;
+ }
}
else {
/* match with FNM_PATHNAME:
@@ -246,9 +266,14 @@ static int excluded_1(const char *pathname,
strncmp(pathname, x->base, baselen))
continue;
- if (fnmatch(exclude, pathname+baselen,
- FNM_PATHNAME) == 0)
- return to_exclude;
+ if (x->flags & EXC_FLAG_NOWILDCARD) {
+ if (!strcmp(exclude, pathname + baselen))
+ return to_exclude;
+ } else {
+ if (fnmatch(exclude, pathname+baselen,
+ FNM_PATHNAME) == 0)
+ return to_exclude;
+ }
}
}
}
@@ -259,9 +284,11 @@ int excluded(struct dir_struct *dir, const char *pathname)
{
int pathlen = strlen(pathname);
int st;
+ const char *basename = strrchr(pathname, '/');
+ basename = (basename) ? basename+1 : pathname;
for (st = EXC_CMDL; st <= EXC_FILE; st++) {
- switch (excluded_1(pathname, pathlen, &dir->exclude_list[st])) {
+ switch (excluded_1(pathname, pathlen, basename, &dir->exclude_list[st])) {
case 0:
return 0;
case 1: