Function mi_page_usable_size_of

3rd/mimalloc-2.0.9/src/alloc.c:244–250

Return the exact usable size of a block.

// Return the exact usable size of a block.
static size_t mi_page_usable_size_of(const mi_page_t* page, const mi_block_t* block) {
  size_t bsize;
  size_t delta;
  bool ok = mi_page_decode_padding(page, block, &delta, &bsize);
  mi_assert_internal(ok); mi_assert_internal(delta <= bsize);
  return (ok ? bsize - delta : 0);
}

static bool mi_verify_padding(const mi_page_t* page, const mi_block_t* block, size_t* size, size_t* wrong) {
  size_t bsize;