mirrors/git
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Notes API: prune_notes(): Prune notes that belong to non-existing objects

Browse Source 
When an object is made unreachable by Git, any notes that annotate that object
are not automagically made unreachable, since all notes are always trivially
reachable from a notes ref. In order to remove notes for non-existing objects,
we therefore need to add functionality for traversing the notes tree and
explicitly removing references to notes that annotate non-reachable objects.
Thus the notes objects themselves also become unreachable, and are removed
by a later garbage collect.

prune_notes() performs this traversal (by using for_each_note() internally),
and removes the notes in question from the notes tree.

Note that the effect of prune_notes() is not persistent unless a subsequent
call to write_notes_tree() is made.

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johan Herland
2010-02-13 22:28:27 +01:00
committed by Junio C Hamano
parent b0032d1e06
commit 00fbe63627
2 changed files with 51 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
notes.h
View File

@ -161,6 +161,18 @@ int for_each_note(struct notes_tree *t, int flags, each_note_fn fn,
*/
int write_notes_tree(struct notes_tree *t, unsigned char *result);
/*
* Remove all notes annotating non-existing objects from the given notes tree
*
* All notes in the given notes_tree that are associated with objects that no
* longer exist in the database, are removed from the notes tree.
*
* IMPORTANT: The changes made by prune_notes() to the given notes_tree
* structure are not persistent until a subsequent call to write_notes_tree()
* returns zero.
*/
void prune_notes(struct notes_tree *t);
/*
* Free (and de-initialize) the given notes_tree structure
*