TickGuard

TickGuard is a RAII helper that automatically signals completion to a TickBarrier when it goes out of scope. It ensures deterministic tick completion even in the presence of early returns or exceptions.

class TickGuard {
public:
  explicit TickGuard(TickBarrier& barrier);
  ~TickGuard();

  TickGuard(const TickGuard&) = delete;
  TickGuard& operator=(const TickGuard&) = delete;

private:
  TickBarrier* _barrier;
};

Purpose

• Guarantee that TickBarrier::complete() is called once per subscriber at the end of a tick, regardless of control flow.

Responsibilities

Behavior	Description
Construction	Stores reference to TickBarrier.
Destruction	Calls complete() when the guard is destroyed.
Copy/Move	Explicitly non-copyable and non-movable.

Notes

• Should be declared at the top of the subscriber's onEvent() method in SyncPolicy.
• Ensures that even early returns or exceptions do not break barrier synchronization.
• No runtime cost beyond pointer storage and destructor call.