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Added DataTree::numStoredBytes

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This commit is contained in:
Sebastian Messmer 2015-02-25 23:08:16 +01:00
parent 0f40619a4a
commit b8cb2ad450
2 changed files with 27 additions and 1 deletions
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24
implementations/onblocks/datatreestore/DataTree.cpp
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@ -142,7 +142,7 @@ void DataTree::traverseLeaves(DataNode *root, uint32_t leafOffset, uint32_t begi
}
DataInnerNode *inner = dynamic_cast<DataInnerNode*>(root);
uint32_t leavesPerChild = intPow(_nodeStore->layout().maxChildrenPerInnerNode(), root->depth()-1);
uint32_t leavesPerChild = leavesPerFullChild(*inner);
uint32_t beginChild = beginIndex/leavesPerChild;
uint32_t endChild = ceilDivision(endIndex, leavesPerChild);
@ -155,6 +155,28 @@ void DataTree::traverseLeaves(DataNode *root, uint32_t leafOffset, uint32_t begi
}
}
uint32_t DataTree::leavesPerFullChild(const DataInnerNode &root) const {
return intPow(_nodeStore->layout().maxChildrenPerInnerNode(), root.depth()-1);
}
uint64_t DataTree::numStoredBytes() const {
return numStoredBytes(*_rootNode);
}
uint64_t DataTree::numStoredBytes(const DataNode &root) const {
const DataLeafNode *leaf = dynamic_cast<const DataLeafNode*>(&root);
if (leaf != nullptr) {
return leaf->numBytes();
}
const DataInnerNode &inner = dynamic_cast<const DataInnerNode&>(root);
uint64_t numBytesInLeftChildren = (inner.numChildren()-1) * leavesPerFullChild(inner);
auto lastChild = _nodeStore->load(inner.LastChild()->key());
uint64_t numBytesInRightChild = numStoredBytes(*lastChild);
return numBytesInLeftChildren + numBytesInRightChild;
}
}
}
}

4
implementations/onblocks/datatreestore/DataTree.h
View File

@ -32,6 +32,8 @@ public:
void flush() const;
void traverseLeaves(uint32_t beginIndex, uint32_t endIndex, std::function<void (datanodestore::DataLeafNode*, uint32_t)> func);
uint64_t numStoredBytes() const;
//TODO Test numStoredBytes()
private:
datanodestore::DataNodeStore *_nodeStore;
@ -48,6 +50,8 @@ private:
void ifRootHasOnlyOneChildReplaceRootWithItsChild();
void traverseLeaves(datanodestore::DataNode *root, uint32_t leafOffset, uint32_t beginIndex, uint32_t endIndex, std::function<void (datanodestore::DataLeafNode*, uint32_t)> func);
uint32_t leavesPerFullChild(const datanodestore::DataInnerNode &root) const;
uint64_t numStoredBytes(const datanodestore::DataNode &root) const;
DISALLOW_COPY_AND_ASSIGN(DataTree);
};