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-rw-r--r--diff-lib.c23
-rw-r--r--fsmonitor.h11
-rw-r--r--t/helper/test-chmtime.c4
-rwxr-xr-xt/perf/p7519-fsmonitor.sh4
4 files changed, 32 insertions, 10 deletions
diff --git a/diff-lib.c b/diff-lib.c
index b73cc1859a..e5a58c9259 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -28,9 +28,10 @@
* exists for ce that is a submodule -- it is a submodule that is not
* checked out). Return negative for an error.
*/
-static int check_removed(const struct cache_entry *ce, struct stat *st)
+static int check_removed(const struct index_state *istate, const struct cache_entry *ce, struct stat *st)
{
- if (lstat(ce->name, st) < 0) {
+ assert(is_fsmonitor_refreshed(istate));
+ if (!(ce->ce_flags & CE_FSMONITOR_VALID) && lstat(ce->name, st) < 0) {
if (!is_missing_file_error(errno))
return -1;
return 1;
@@ -136,7 +137,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
memset(&(dpath->parent[0]), 0,
sizeof(struct combine_diff_parent)*5);
- changed = check_removed(ce, &st);
+ changed = check_removed(istate, ce, &st);
if (!changed)
wt_mode = ce_mode_from_stat(ce, st.st_mode);
else {
@@ -216,7 +217,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
} else {
struct stat st;
- changed = check_removed(ce, &st);
+ changed = check_removed(istate, ce, &st);
if (changed) {
if (changed < 0) {
perror(ce->name);
@@ -278,7 +279,8 @@ static void diff_index_show_file(struct rev_info *revs,
oid, oid_valid, ce->name, dirty_submodule);
}
-static int get_stat_data(const struct cache_entry *ce,
+static int get_stat_data(const struct index_state *istate,
+ const struct cache_entry *ce,
const struct object_id **oidp,
unsigned int *modep,
int cached, int match_missing,
@@ -290,7 +292,7 @@ static int get_stat_data(const struct cache_entry *ce,
if (!cached && !ce_uptodate(ce)) {
int changed;
struct stat st;
- changed = check_removed(ce, &st);
+ changed = check_removed(istate, ce, &st);
if (changed < 0)
return -1;
else if (changed) {
@@ -321,12 +323,13 @@ static void show_new_file(struct rev_info *revs,
const struct object_id *oid;
unsigned int mode;
unsigned dirty_submodule = 0;
+ struct index_state *istate = revs->diffopt.repo->index;
/*
* New file in the index: it might actually be different in
* the working tree.
*/
- if (get_stat_data(new_file, &oid, &mode, cached, match_missing,
+ if (get_stat_data(istate, new_file, &oid, &mode, cached, match_missing,
&dirty_submodule, &revs->diffopt) < 0)
return;
@@ -342,8 +345,9 @@ static int show_modified(struct rev_info *revs,
unsigned int mode, oldmode;
const struct object_id *oid;
unsigned dirty_submodule = 0;
+ struct index_state *istate = revs->diffopt.repo->index;
- if (get_stat_data(new_entry, &oid, &mode, cached, match_missing,
+ if (get_stat_data(istate, new_entry, &oid, &mode, cached, match_missing,
&dirty_submodule, &revs->diffopt) < 0) {
if (report_missing)
diff_index_show_file(revs, "-", old_entry,
@@ -574,6 +578,7 @@ int run_diff_index(struct rev_info *revs, unsigned int option)
struct object_id oid;
const char *name;
char merge_base_hex[GIT_MAX_HEXSZ + 1];
+ struct index_state *istate = revs->diffopt.repo->index;
if (revs->pending.nr != 1)
BUG("run_diff_index must be passed exactly one tree");
@@ -581,6 +586,8 @@ int run_diff_index(struct rev_info *revs, unsigned int option)
trace_performance_enter();
ent = revs->pending.objects;
+ refresh_fsmonitor(istate);
+
if (merge_base) {
diff_get_merge_base(revs, &oid);
name = oid_to_hex_r(merge_base_hex, &oid);
diff --git a/fsmonitor.h b/fsmonitor.h
index 7f1794b90b..f20d72631d 100644
--- a/fsmonitor.h
+++ b/fsmonitor.h
@@ -50,6 +50,17 @@ void refresh_fsmonitor(struct index_state *istate);
int fsmonitor_is_trivial_response(const struct strbuf *query_result);
/*
+ * Check if refresh_fsmonitor has been called at least once.
+ * refresh_fsmonitor is idempotent. Returns true if fsmonitor is
+ * not enabled (since the state will be "fresh" w/ CE_FSMONITOR_VALID unset)
+ * This version is useful for assertions
+ */
+static inline int is_fsmonitor_refreshed(const struct index_state *istate)
+{
+ return !core_fsmonitor || istate->fsmonitor_has_run_once;
+}
+
+/*
* Set the given cache entries CE_FSMONITOR_VALID bit. This should be
* called any time the cache entry has been updated to reflect the
* current state of the file on disk.
diff --git a/t/helper/test-chmtime.c b/t/helper/test-chmtime.c
index aa22af48c2..524b55ca49 100644
--- a/t/helper/test-chmtime.c
+++ b/t/helper/test-chmtime.c
@@ -109,9 +109,9 @@ int cmd__chmtime(int argc, const char **argv)
uintmax_t mtime;
if (stat(argv[i], &sb) < 0) {
- fprintf(stderr, "Failed to stat %s: %s\n",
+ fprintf(stderr, "Failed to stat %s: %s. Skipping\n",
argv[i], strerror(errno));
- return 1;
+ continue;
}
#ifdef GIT_WINDOWS_NATIVE
diff --git a/t/perf/p7519-fsmonitor.sh b/t/perf/p7519-fsmonitor.sh
index b657564aed..5eb5044a10 100755
--- a/t/perf/p7519-fsmonitor.sh
+++ b/t/perf/p7519-fsmonitor.sh
@@ -216,6 +216,10 @@ test_fsmonitor_suite() {
git diff
'
+ test_perf_w_drop_caches "diff HEAD ($DESC)" '
+ git diff HEAD
+ '
+
test_perf_w_drop_caches "diff -- 0_files ($DESC)" '
git diff -- 1_file
'