From 96f6d3f61ad02ef2fd0393765207233845a7c7e0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Fri, 10 Feb 2017 21:03:30 +0100 Subject: ls-files: move only kept cache entries in prune_cache() prune_cache() first identifies those entries at the start of the sorted array that can be discarded. Then it moves the rest of the entries up. Last it identifies the unwanted trailing entries among the moved ones and cuts them off. Change the order: Identify both start *and* end of the range to keep first and then move only those entries to the top. The resulting code is slightly shorter and a bit more efficient. Signed-off-by: Rene Scharfe Reviewed-by: Brandon Williams Signed-off-by: Junio C Hamano --- builtin/ls-files.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/builtin/ls-files.c b/builtin/ls-files.c index 18105ec7ea..1c0f057d02 100644 --- a/builtin/ls-files.c +++ b/builtin/ls-files.c @@ -379,10 +379,7 @@ static void prune_cache(const char *prefix, size_t prefixlen) pos = cache_name_pos(prefix, prefixlen); if (pos < 0) pos = -pos-1; - memmove(active_cache, active_cache + pos, - (active_nr - pos) * sizeof(struct cache_entry *)); - active_nr -= pos; - first = 0; + first = pos; last = active_nr; while (last > first) { int next = (last + first) >> 1; @@ -393,7 +390,9 @@ static void prune_cache(const char *prefix, size_t prefixlen) } last = next; } - active_nr = last; + memmove(active_cache, active_cache + pos, + (last - pos) * sizeof(struct cache_entry *)); + active_nr = last - pos; } /* -- cgit v1.2.3