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Improve ajdusting of prev ptr

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This commit is contained in:
jbajic 2023-02-23 14:18:59 +01:00
parent bc46a9f54b
commit fd18ff0196
2 changed files with 15 additions and 15 deletions
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24
src/storage/v3/splitter.cpp
View File

@ -238,16 +238,15 @@ void Splitter::AdjustClonedTransaction(Transaction &cloned_transaction, const Tr
const auto *delta = &*delta_it;
auto *cloned_delta = &*cloned_delta_it;
Delta *cloned_delta_prev_ptr = cloned_delta;
// The head of delta chains contain either vertex/edge as prev ptr so we adjust
// it just at the beginning of delta chain
AdjustDeltaPrevPtr(*delta, *cloned_delta_prev_ptr, cloned_transactions, cloned_edges);
while (delta->next != nullptr) {
AdjustEdgeRef(*cloned_delta, cloned_edges);
// Align next ptr
AdjustDeltaNext(*delta, *cloned_delta, cloned_transactions);
// Align prev ptr
if (cloned_delta_prev_ptr != nullptr) {
AdjustDeltaPrevPtr(*delta, *cloned_delta_prev_ptr, cloned_transactions, cloned_vertices, cloned_edges);
}
// Align next ptr and prev ptr
AdjustDeltaNextAndPrev(*delta, *cloned_delta, cloned_transactions);
// TODO Next delta might not belong to the cloned transaction and thats
// why we skip this delta of the delta chain
@ -261,7 +260,7 @@ void Splitter::AdjustClonedTransaction(Transaction &cloned_transaction, const Tr
}
// Align prev ptr
if (cloned_delta_prev_ptr != nullptr) {
AdjustDeltaPrevPtr(*delta, *cloned_delta_prev_ptr, cloned_transactions, cloned_vertices, cloned_edges);
AdjustDeltaPrevPtr(*delta, *cloned_delta_prev_ptr, cloned_transactions, cloned_edges);
}
++delta_it;
@ -299,8 +298,8 @@ void Splitter::AdjustEdgeRef(Delta &cloned_delta, EdgeContainer &cloned_edges) c
}
}
void Splitter::AdjustDeltaNext(const Delta &original, Delta &cloned,
std::map<uint64_t, std::unique_ptr<Transaction>> &cloned_transactions) {
void Splitter::AdjustDeltaNextAndPrev(const Delta &original, Delta &cloned,
std::map<uint64_t, std::unique_ptr<Transaction>> &cloned_transactions) {
// Get cloned_delta->next transaction, using delta->next original transaction
// cloned_transactions key is start_timestamp
auto cloned_transaction_it =
@ -319,15 +318,16 @@ void Splitter::AdjustDeltaNext(const Delta &original, Delta &cloned,
cloned_transaction_it->second->deltas, [&original](const auto &elem) { return elem.id == original.next->id; });
MG_ASSERT(found_cloned_delta_it != cloned_transaction_it->second->deltas.end(), "Delta with given uuid must exist!");
cloned.next = &*found_cloned_delta_it;
found_cloned_delta_it->prev.Set(&cloned);
}
void Splitter::AdjustDeltaPrevPtr(const Delta &original, Delta &cloned,
std::map<uint64_t, std::unique_ptr<Transaction>> &cloned_transactions,
VertexContainer & /*cloned_vertices*/, EdgeContainer &cloned_edges) {
EdgeContainer &cloned_edges) {
auto ptr = original.prev.Get();
switch (ptr.type) {
case PreviousPtr::Type::NULLPTR: {
// noop
MG_ASSERT(false, "PreviousPtr cannot be a nullptr!");
break;
}
case PreviousPtr::Type::DELTA: {

6
src/storage/v3/splitter.hpp
View File

@ -87,12 +87,12 @@ class Splitter final {
void AdjustEdgeRef(Delta &cloned_delta, EdgeContainer &cloned_edges) const;
static void AdjustDeltaNext(const Delta &original, Delta &cloned,
std::map<uint64_t, std::unique_ptr<Transaction>> &cloned_transactions);
static void AdjustDeltaNextAndPrev(const Delta &original, Delta &cloned,
std::map<uint64_t, std::unique_ptr<Transaction>> &cloned_transactions);
static void AdjustDeltaPrevPtr(const Delta &original, Delta &cloned,
std::map<uint64_t, std::unique_ptr<Transaction>> &cloned_transactions,
VertexContainer &cloned_vertices, EdgeContainer &cloned_edges);
EdgeContainer &cloned_edges);
const LabelId primary_label_;
VertexContainer &vertices_;