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worker: leave TODO comments for using std::variant when possible #38788

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worker: leave TODO comments for using std::variant when possible #38788

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6 changes: 6 additions & 0 deletions src/node_messaging.h
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Original file line number Diff line number Diff line change
Expand Up @@ -107,6 +107,9 @@ class Message : public MemoryRetainer {

private:
MallocedBuffer<char> main_message_buf_;
// TODO(addaleax): Make this a std::variant to save storage size in the common
// case (which is that all of these vectors are empty) once that is available
// with C++17.
std::vector<std::shared_ptr<v8::BackingStore>> array_buffers_;
std::vector<std::shared_ptr<v8::BackingStore>> shared_array_buffers_;
std::vector<std::unique_ptr<TransferData>> transferables_;
Expand Down Expand Up @@ -202,6 +205,9 @@ class MessagePortData : public TransferData {
// This mutex protects all fields below it, with the exception of
// sibling_.
mutable Mutex mutex_;
// TODO(addaleax): Make this a std::variant<std::shared_ptr, std::unique_ptr>
// once that is available with C++17, because std::shared_ptr comes with
// overhead that is only necessary for BroadcastChannel.
std::deque<std::shared_ptr<Message>> incoming_messages_;
MessagePort* owner_ = nullptr;
std::shared_ptr<SiblingGroup> group_;
Expand Down