[PATCH 14/20] untracked cache: print untracked statistics with $GIT_TRACE_UNTRACKED

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

This could be used to verify correct behavior in tests
---
 dir.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/dir.c b/dir.c
index 18fe44c..58303ca 100644
--- a/dir.c
+++ b/dir.c
@@ -14,6 +14,8 @@
 #include "pathspec.h"
 #include "varint.h"
 
+#define TRACE_KEY "GIT_TRACE_UNTRACKED"
+
 struct path_simplify {
 	int len;
 	const char *path;
@@ -1929,6 +1931,16 @@ int read_directory(struct dir_struct *dir, const char *path, int len, const stru
 	free_simplify(simplify);
 	qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
 	qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name);
+	if (dir->untracked) {
+		trace_printf_key(TRACE_KEY, "node creation: %u\n",
+				 dir->untracked->dir_created);
+		trace_printf_key(TRACE_KEY, "gitignore invalidation: %u\n",
+				 dir->untracked->gitignore_invalidated);
+		trace_printf_key(TRACE_KEY, "directory invalidation: %u\n",
+				 dir->untracked->dir_invalidated);
+		trace_printf_key(TRACE_KEY, "opendir: %u\n",
+				 dir->untracked->dir_opened);
+	}
 	return dir->nr;
 }
 
-- 
1.9.1.346.ga2b5940