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fix some btree bugs

This commit is contained in:
Joe Thornber 2011-11-21 12:17:16 +00:00
parent 94df55c122
commit 4df2123e9f
1 changed files with 10 additions and 5 deletions
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15
btree.tcc
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@ -93,9 +93,12 @@ btree_detail::node_type
node_ref<ValueTraits>::get_type() const
{
uint32_t flags = to_cpu<uint32_t>(raw_->header.flags);
if (flags & INTERNAL_NODE)
if (flags & INTERNAL_NODE) {
if (flags & LEAF_NODE)
throw runtime_error("btree node is both internal and leaf");
return INTERNAL;
else if (flags & LEAF_NODE)
} else if (flags & LEAF_NODE)
return LEAF;
else
throw runtime_error("unknown node type");
@ -108,11 +111,11 @@ node_ref<ValueTraits>::set_type(node_type t)
uint32_t flags = to_cpu<uint32_t>(raw_->header.flags);
switch (t) {
case INTERNAL:
flags |= INTERNAL_NODE;
flags = INTERNAL_NODE;
break;
case LEAF:
flags |= LEAF_NODE;
flags = LEAF_NODE;
break;
}
raw_->header.flags = to_disk<__le32>(flags);
@ -602,6 +605,7 @@ split_beneath(btree_detail::shadow_spine &spine,
// The parent may have changed value type, so we re-get it.
internal_node p = spine.template get_node<uint64_traits>();
p.set_type(btree_detail::INTERNAL);
p.set_max_entries();
p.set_nr_entries(2);
p.set_value_size(sizeof(typename uint64_traits::disk_type));
@ -635,8 +639,9 @@ split_sibling(btree_detail::shadow_spine &spine,
unsigned nr_right = l.get_nr_entries() - nr_left;
r.set_nr_entries(0);
r.set_max_entries();
r.set_type(l.get_type());
r.set_max_entries(l.get_max_entries());
r.set_value_size(sizeof(typename ValueTraits::disk_type));
r.copy_entries(l, nr_left, nr_left + nr_right);
l.set_nr_entries(nr_left);