From 9fb88419ba85e641006c80db53620423f37f1c93 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 25 Oct 2007 11:19:10 -0700 Subject: Ref-count the filespecs used by diffcore Rather than copy the filespecs when introducing new versions of them (for rename or copy detection), use a refcount and increment the count when reusing the diff_filespec. This avoids unnecessary allocations, but the real reason behind this is a future enhancement: we will want to track shared data across the copy/rename detection. In order to efficiently notice when a filespec is used by a rename, the rename machinery wants to keep track of a rename usage count which is shared across all different users of the filespec. Signed-off-by: Linus Torvalds Signed-off-by: Junio C Hamano --- diffcore-rename.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) (limited to 'diffcore-rename.c') diff --git a/diffcore-rename.c b/diffcore-rename.c index 2077a9b981..3da06b702b 100644 --- a/diffcore-rename.c +++ b/diffcore-rename.c @@ -209,21 +209,19 @@ static int estimate_similarity(struct diff_filespec *src, static void record_rename_pair(int dst_index, int src_index, int score) { - struct diff_filespec *one, *two, *src, *dst; + struct diff_filespec *src, *dst; struct diff_filepair *dp; if (rename_dst[dst_index].pair) die("internal error: dst already matched."); src = rename_src[src_index].one; - one = alloc_filespec(src->path); - fill_filespec(one, src->sha1, src->mode); + src->count++; dst = rename_dst[dst_index].two; - two = alloc_filespec(dst->path); - fill_filespec(two, dst->sha1, dst->mode); + dst->count++; - dp = diff_queue(NULL, one, two); + dp = diff_queue(NULL, src, dst); dp->renamed_pair = 1; if (!strcmp(src->path, dst->path)) dp->score = rename_src[src_index].score; @@ -526,10 +524,8 @@ void diffcore_rename(struct diff_options *options) } } - for (i = 0; i < rename_dst_nr; i++) { - diff_free_filespec_data(rename_dst[i].two); - free(rename_dst[i].two); - } + for (i = 0; i < rename_dst_nr; i++) + free_filespec(rename_dst[i].two); free(rename_dst); rename_dst = NULL; -- cgit v1.2.3