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authorNguyễn Thái Ngọc Duy <pclouds@gmail.com>2015-03-08 17:12:30 +0700
committerJunio C Hamano <gitster@pobox.com>2015-03-12 13:45:16 -0700
commit26cb0182b8b2e119f469750b3511fac4624f6667 (patch)
treec87413363af8182232eaaf0e7841f0d509b615c2 /dir.h
parent91a2288b5f63fba82e912dca475154d5b9dd233a (diff)
downloadgit-26cb0182b8b2e119f469750b3511fac4624f6667.tar.gz
untracked cache: mark what dirs should be recursed/saved
If we redo this thing in a functional style, we would have one struct untracked_dir as input tree and another as output. The input is used for verification. The output is a brand new tree, reflecting current worktree. But that means recreate a lot of dir nodes even if a lot could be shared between input and output trees in good cases. So we go with the messy but efficient way, combining both input and output trees into one. We need a way to know which node in this combined tree belongs to the output. This is the purpose of this "recurse" flag. "valid" bit can't be used for this because it's about data of the node except the subdirs. When we invalidate a directory, we want to keep cached data of the subdirs intact even though we don't really know what subdir still exists (yet). Then we check worktree to see what actual subdir remains on disk. Those will have 'recurse' bit set again. If cached data for those are still valid, we may be able to avoid computing exclude files for them. Those subdirs that are deleted will have 'recurse' remained clear and their 'valid' bits do not matter. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'dir.h')
-rw-r--r--dir.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/dir.h b/dir.h
index ff3d99bcb0..95baf014ca 100644
--- a/dir.h
+++ b/dir.h
@@ -115,8 +115,9 @@ struct untracked_cache_dir {
unsigned int untracked_alloc, dirs_nr, dirs_alloc;
unsigned int untracked_nr;
unsigned int check_only : 1;
- /* all data in this struct are good */
+ /* all data except 'dirs' in this struct are good */
unsigned int valid : 1;
+ unsigned int recurse : 1;
/* null SHA-1 means this directory does not have .gitignore */
unsigned char exclude_sha1[20];
char name[FLEX_ARRAY];