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perf: Serialize nodes without copying

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This commit is contained in:
Bart
2026-06-06 09:36:33 -04:00
parent 949887feb9
commit 58e3f62090
1 changed files with 7 additions and 8 deletions
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15
src/libxrpl/shamap/SHAMapSync.cpp
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@@ -449,17 +449,16 @@ SHAMap::getNodeFat(
std::stack<std::tuple<SHAMapTreeNode*, SHAMapNodeID, int>> stack;
stack.emplace(node, nodeID, depth);
Serializer s(8192);
while (!stack.empty())
{
std::tie(node, nodeID, depth) = stack.top();
stack.pop();
// Add this node to the reply
s.erase();
// Use a fresh Serializer per node and move its buffer into `data` rather than copying it
// via Serializer::getData(): the move is O(1) whereas the copy was O(node size).
Serializer s(256);
node->serializeForWire(s);
data.emplace_back(nodeID, s.getData());
data.emplace_back(nodeID, std::move(s.modData()));
if (node->isInner())
{
@@ -487,9 +486,9 @@ SHAMap::getNodeFat(
else if (childNode->isInner() || fatLeaves)
{
// Just include this node
s.erase();
childNode->serializeForWire(s);
data.emplace_back(childID, s.getData());
Serializer cs(256);
childNode->serializeForWire(cs);
data.emplace_back(childID, std::move(cs.modData()));
}
}
}