From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001 From: Vladimir Azarov Date: Tue, 1 Oct 2024 15:47:05 +0200 Subject: Initial version --- src/malloc/mallocng/malloc_usable_size.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 src/malloc/mallocng/malloc_usable_size.c (limited to 'src/malloc/mallocng/malloc_usable_size.c') diff --git a/src/malloc/mallocng/malloc_usable_size.c b/src/malloc/mallocng/malloc_usable_size.c new file mode 100644 index 0000000..ce6a960 --- /dev/null +++ b/src/malloc/mallocng/malloc_usable_size.c @@ -0,0 +1,13 @@ +#include +#include "meta.h" + +size_t malloc_usable_size(void *p) +{ + if (!p) return 0; + struct meta *g = get_meta(p); + int idx = get_slot_index(p); + size_t stride = get_stride(g); + unsigned char *start = g->mem->storage + stride*idx; + unsigned char *end = start + stride - IB; + return get_nominal_size(p, end); +} -- cgit v1.2.3