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remote prune: optimize "dangling symref" check/warning

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When 'git remote prune' was used to delete many refs in a repository
with many refs, a lot of time was spent checking for (now) dangling
symbolic refs pointing to the deleted ref, since warn_dangling_symref()
was once per deleted ref to check all other refs in the repository.

Avoid this using the new warn_dangling_symrefs() function which
makes one pass over all refs and checks for all the deleted refs in
one go, after they have all been deleted.

Signed-off-by: Jens Lindström <jl@opera.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jens Lindström
2014-05-23 12:30:25 +02:00
committed by Junio C Hamano
parent c9e768bb77
commit e6bea66db6
3 changed files with 25 additions and 2 deletions
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refs.h
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@ -89,6 +89,7 @@ static inline const char *has_glob_specials(const char *pattern)
extern int for_each_rawref(each_ref_fn, void *);
extern void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname);
extern void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list* refnames);
/*
* Lock the packed-refs file for writing. Flags is passed to