diff options
| author | Nguyễn Thái Ngọc Duy <pclouds@gmail.com> | 2013-03-17 07:28:06 +0400 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2013-03-17 09:57:29 +0400 |
| commit | c73592812d36ccc7eccfd0489177970d246fa522 (patch) | |
| tree | 1e92b0c8fb8cb4bf5bbb10f38cf695785457b2e7 /diffcore-rename.c | |
| parent | 03a0fb0ccf48c831060c2243f830b6a12cd8fdf3 (diff) | |
Preallocate hash tables when the number of inserts are known in advance
This avoids unnecessary re-allocations and reinsertions. On webkit.git
(i.e. about 182k inserts to the name hash table), this reduces about
100ms out of 3s user time.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'diffcore-rename.c')
| -rw-r--r-- | diffcore-rename.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/diffcore-rename.c b/diffcore-rename.c index 512d0ac5fd..6c7a72fbe7 100644 --- a/diffcore-rename.c +++ b/diffcore-rename.c @@ -389,6 +389,7 @@ static int find_exact_renames(struct diff_options *options) struct hash_table file_table; init_hash(&file_table); + preallocate_hash(&file_table, rename_src_nr + rename_dst_nr); for (i = 0; i < rename_src_nr; i++) insert_file_table(&file_table, -1, i, rename_src[i].p->one); |