- if (bd->blocks > BLOCKS_PER_MBLOCK) {
- nat mblocks;
- void *new_mblock;
- if ((blocks - BLOCKS_PER_MBLOCK) % (MBLOCK_SIZE / BLOCK_SIZE) != 0) {
- barf("splitLargeBlock: not a multiple of a megablock");
- }
- mblocks = 1 + (blocks - BLOCKS_PER_MBLOCK) / (MBLOCK_SIZE / BLOCK_SIZE);
- new_mblock = (void *) ((P_)MBLOCK_ROUND_DOWN(bd) + mblocks * MBLOCK_SIZE_W);
- initMBlock(new_mblock);
- new_bd = FIRST_BDESCR(new_mblock);
- new_bd->blocks = MBLOCK_GROUP_BLOCKS(mblocks);
- }
- else
- {
- // NB. we're not updating all the bdescrs in the split groups to
- // point to the new heads, so this can only be used for large
- // objects which do not start in the non-head block.
- new_bd = bd + blocks;
- new_bd->blocks = bd->blocks - blocks;
+/* -----------------------------------------------------------------------------
+ Stats / metrics
+ -------------------------------------------------------------------------- */
+
+nat
+countBlocks(bdescr *bd)
+{
+ nat n;
+ for (n=0; bd != NULL; bd=bd->link) {
+ n += bd->blocks;