QtxAcqHistTracker: implement heuristic gridlock detector

smocore/qutexAcquisitionHistoryTracker.cpp

@@ -63,7 +63,9 @@ namespace smo {
  */
 
 bool QutexAcquisitionHistoryTracker
-::heuristicallyTraceContinuationHistoryForGridlockOn(Qutex &firstFailedQutex)
+::heuristicallyTraceContinuationHistoryForGridlockOn(
+	Qutex &firstFailedQutex,
+	std::shared_ptr<AsynchronousContinuationChainLink>& currentContinuation)
 const
 {
 	/**	HEURISTIC APPROACH:
@@ -80,6 +82,34 @@ const
 	 * explanation.
 	 */
 
+	// Iterate through all entries in the acquisition history
+	for (const auto& entry : acquisitionHistory) {
+		const auto& continuation = entry.first;
+		const auto& historyEntry = entry.second;
+
+		// Skip the current continuation (don't compare with itself)
+		if (continuation == currentContinuation) {
+			continue;
+		}
+
+		// Check if firstFailedQutex is in this continuation's held locks
+		const std::unique_ptr<std::forward_list<std::reference_wrapper<Qutex>>>&
+			heldLocks = historyEntry.second;
+
+		if (!heldLocks)
+			{ continue; }
+
+		for (const auto& heldLock : *heldLocks)
+		{
+			/* Found firstFailedQutex in another continuation's held locks
+			 * This indicates a potential gridlock
+			 */
+			if (&heldLock.get() == &firstFailedQutex) {
+				return true;
+			}
+		}
+	}
+
 	return false;
 }