size_t block_store_allocate(block_store_t *const bs) {
if (bs && bs->fbm) {
size_t free_block = bitmap_ffz(bs->fbm);
if (free_block != SIZE_MAX) {
bitmap_set(bs->fbm, free_block);
// not going to mark dbm because there's no change (yet)
return free_block;
}
block_store_errno = BS_FULL;
return 0;
}
block_store_errno = BS_PARAM;
return 0;
}
/** Allocate a new ID.
* @param alloc Allocator to allocate from.
* @return New ID, or -1 if no IDs available. */
int32_t id_allocator_alloc(id_allocator_t *alloc) {
int32_t id;
mutex_lock(&alloc->lock);
id = bitmap_ffz(alloc->bitmap, alloc->nbits);
if(id < 0) {
mutex_unlock(&alloc->lock);
return -1;
}
bitmap_set(alloc->bitmap, id);
mutex_unlock(&alloc->lock);
return id;
}
size_t block_store_allocate(block_store_t *const bs) {
if (bs) {
size_t free_block = bitmap_ffz(bs->fbm);
if (free_block != SIZE_MAX) {
bitmap_set(bs->fbm, free_block);
bitmap_set(bs->dbm, FBM_BLOCK_CHANGE_LOCATION(free_block));
// Set that FBM block as changed
FLAG_SET(bs, DIRTY);
bs_errno = BS_OK;
return free_block;
}
bs_errno = BS_FULL;
return 0;
}
bs_errno = BS_PARAM;
return 0;
}
