@@ -2747,13 +2747,33 @@ static void set_untracked_ident(struct untracked_cache *uc)
strbuf_addch(&uc->ident, 0);
}
-static void new_untracked_cache(struct index_state *istate)
+static unsigned new_untracked_cache_flags(struct index_state *istate)
+{
+ struct repository *repo = istate->repo;
+ char *val;
+
+ /*
+ * This logic is coordinated with the setting of these flags in
+ * wt-status.c#wt_status_collect_untracked(), and the evaluation
+ * of the config setting in commit.c#git_status_config()
+ */
+ if (!repo_config_get_string(repo, "status.showuntrackedfiles", &val) &&
+ !strcmp(val, "all"))
+ return 0;
+
+ /*
+ * The default, if "all" is not set, is "normal" - leading us here.
+ * If the value is "none" then it really doesn't matter.
+ */
+ return DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
+}
+
+static void new_untracked_cache(struct index_state *istate, int flags)
{
struct untracked_cache *uc = xcalloc(1, sizeof(*uc));
strbuf_init(&uc->ident, 100);
uc->exclude_per_dir = ".gitignore";
- /* should be the same flags used by git-status */
- uc->dir_flags = DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
+ uc->dir_flags = flags >= 0 ? flags : new_untracked_cache_flags(istate);
set_untracked_ident(uc);
istate->untracked = uc;
istate->cache_changed |= UNTRACKED_CHANGED;
@@ -2762,11 +2782,11 @@ static void new_untracked_cache(struct index_state *istate)
void add_untracked_cache(struct index_state *istate)
{
if (!istate->untracked) {
- new_untracked_cache(istate);
+ new_untracked_cache(istate, -1);
} else {
if (!ident_in_untracked(istate->untracked)) {
free_untracked_cache(istate->untracked);
- new_untracked_cache(istate);
+ new_untracked_cache(istate, -1);
}
}
}
@@ -2814,17 +2834,9 @@ static struct untracked_cache_dir *validate_untracked_cache(struct dir_struct *d
if (base_len || (pathspec && pathspec->nr))
return NULL;
- /* Different set of flags may produce different results */
- if (dir->flags != dir->untracked->dir_flags ||
- /*
- * See treat_directory(), case index_nonexistent. Without
- * this flag, we may need to also cache .git file content
- * for the resolve_gitlink_ref() call, which we don't.
- */
- !(dir->flags & DIR_SHOW_OTHER_DIRECTORIES) ||
- /* We don't support collecting ignore files */
- (dir->flags & (DIR_SHOW_IGNORED | DIR_SHOW_IGNORED_TOO |
- DIR_COLLECT_IGNORED)))
+ /* We don't support collecting ignore files */
+ if (dir->flags & (DIR_SHOW_IGNORED | DIR_SHOW_IGNORED_TOO |
+ DIR_COLLECT_IGNORED))
return NULL;
/*
@@ -2847,6 +2859,50 @@ static struct untracked_cache_dir *validate_untracked_cache(struct dir_struct *d
return NULL;
}
+ /*
+ * If the untracked structure we received does not have the same flags
+ * as requested in this run, we're going to need to either discard the
+ * existing structure (and potentially later recreate), or bypass the
+ * untracked cache mechanism for this run.
+ */
+ if (dir->flags != dir->untracked->dir_flags) {
+ /*
+ * If the untracked structure we received does not have the same flags
+ * as configured, then we need to reset / create a new "untracked"
+ * structure to match the new config.
+ *
+ * Keeping the saved and used untracked cache consistent with the
+ * configuration provides an opportunity for frequent users of
+ * "git status -uall" to leverage the untracked cache by aligning their
+ * configuration - setting "status.showuntrackedfiles" to "all" or
+ * "normal" as appropriate.
+ *
+ * Previously using -uall (or setting "status.showuntrackedfiles" to
+ * "all") was incompatible with untracked cache and *consistently*
+ * caused surprisingly bad performance (with fscache and fsmonitor
+ * enabled) on Windows.
+ *
+ * IMPROVEMENT OPPORTUNITY: If we reworked the untracked cache storage
+ * to not be as bound up with the desired output in a given run,
+ * and instead iterated through and stored enough information to
+ * correctly serve both "modes", then users could get peak performance
+ * with or without '-uall' regardless of their
+ * "status.showuntrackedfiles" config.
+ */
+ if (dir->untracked->dir_flags != new_untracked_cache_flags(istate)) {
+ free_untracked_cache(istate->untracked);
+ new_untracked_cache(istate, dir->flags);
+ dir->untracked = istate->untracked;
+ }
+ else {
+ /*
+ * Current untracked cache data is consistent with config, but not
+ * usable in this request/run; just bypass untracked cache.
+ */
+ return NULL;
+ }
+ }
+
if (!dir->untracked->root) {
/* Untracked cache existed but is not initialized; fix that */
FLEX_ALLOC_STR(dir->untracked->root, name, "");
@@ -222,6 +222,87 @@ test_expect_success 'untracked cache remains after bypass' '
test_cmp ../dump.expect ../actual
'
+test_expect_success 'if -uall is configured, untracked cache gets populated by default' '
+ test_config status.showuntrackedfiles all &&
+ : >../trace.output &&
+ GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+ git status --porcelain >../actual &&
+ iuc status --porcelain >../status.iuc &&
+ test_cmp ../status_uall.expect ../status.iuc &&
+ test_cmp ../status_uall.expect ../actual &&
+ get_relevant_traces ../trace.output ../trace.relevant &&
+ cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:3
+ ....gitignore-invalidation:1
+ ....directory-invalidation:0
+ ....opendir:4
+EOF
+ test_cmp ../trace.expect ../trace.relevant
+'
+
+cat >../dump_uall.expect <<EOF &&
+info/exclude $EMPTY_BLOB
+core.excludesfile $ZERO_OID
+exclude_per_dir .gitignore
+flags 00000000
+/ $ZERO_OID recurse valid
+three
+/done/ $ZERO_OID recurse valid
+/dthree/ $ZERO_OID recurse valid
+three
+/dtwo/ $ZERO_OID recurse valid
+two
+EOF
+
+test_expect_success 'if -uall was configured, untracked cache is populated' '
+ test-tool dump-untracked-cache >../actual &&
+ test_cmp ../dump_uall.expect ../actual
+'
+
+test_expect_success 'if -uall is configured, untracked cache is used by default' '
+ test_config status.showuntrackedfiles all &&
+ : >../trace.output &&
+ GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+ git status --porcelain >../actual &&
+ iuc status --porcelain >../status.iuc &&
+ test_cmp ../status_uall.expect ../status.iuc &&
+ test_cmp ../status_uall.expect ../actual &&
+ get_relevant_traces ../trace.output ../trace.relevant &&
+ cat >../trace.expect <<EOF &&
+ ....path:
+ ....node-creation:0
+ ....gitignore-invalidation:0
+ ....directory-invalidation:0
+ ....opendir:0
+EOF
+ test_cmp ../trace.expect ../trace.relevant
+'
+
+# Bypassing the untracked cache here is not desirable from an
+# end-user perspective, but is expected in the current design.
+# The untracked cache data stored for a -all run cannot be
+# correctly used in a -unormal run - it would yield incorrect
+# output.
+test_expect_success 'if -uall is configured, untracked cache is bypassed with -unormal' '
+ test_config status.showuntrackedfiles all &&
+ : >../trace.output &&
+ GIT_TRACE2_PERF="$TRASH_DIRECTORY/trace.output" \
+ git status -unormal --porcelain >../actual &&
+ iuc status -unormal --porcelain >../status.iuc &&
+ test_cmp ../status.expect ../status.iuc &&
+ test_cmp ../status.expect ../actual &&
+ get_relevant_traces ../trace.output ../trace.relevant &&
+ cat >../trace.expect <<EOF &&
+ ....path:
+EOF
+ test_cmp ../trace.expect ../trace.relevant
+'
+
+test_expect_success 'repopulate untracked cache for -unormal' '
+ git status --porcelain
+'
+
test_expect_success 'modify in root directory, one dir invalidation' '
: >four &&
test-tool chmtime =-240 four &&