From e8b112325c4acd54c4ea49933322a06e4c79c8ca Mon Sep 17 00:00:00 2001 From: Ran Benita Date: Fri, 12 Sep 2014 00:31:40 +0300 Subject: [PATCH] darray: add darray_shrink() If we have a big array which can be finalized, on average we can give back 1/4 of its size, which the allocator might be able to use. Signed-off-by: Ran Benita --- src/darray.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/darray.h b/src/darray.h index d85edea..be0319f 100644 --- a/src/darray.h +++ b/src/darray.h @@ -166,6 +166,12 @@ typedef darray (unsigned long) darray_ulong; sizeof(*(arr).item))); \ } while (0) +#define darray_shrink(arr) do { \ + if ((arr).size > 0) \ + (arr).item = realloc((arr).item, \ + ((arr).alloc = (arr).size) * sizeof(*(arr).item)); \ +} while (0) + static inline unsigned darray_next_alloc(unsigned alloc, unsigned need, unsigned itemSize) { -- 2.7.4