Tick Guard

The TickGuard is an RAII utility that automatically signals tick completion when it goes out of scope.

Purpose

Simplify synchronization logic in MarketDataBus (synchronized version) by ensuring each subscriber signals its completion through the TickBarrier.

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Interface Summary

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

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

Responsibilities

• Call barrier.complete() automatically on destruction
• Prevent missing tick completions due to early returns or exceptions

Usage Example

void onBookUpdate(const BookUpdateEvent& ev) {
  TickGuard guard(barrier);
  // ... process tick ...
} // completion is signaled automatically

Notes

• Used in synchronous market data processing mode
• Should only be constructed with a valid reference to TickBarrier