IoUringEngn: add random dummy slot generator for debugging

stimBuffApis/livoxGen1/ioUringAssemblyEngine.h

@@ -9,6 +9,7 @@
 #include <vector>
 #include <chrono>
 #include <atomic>
+#include <random>
 #include <liburing.h>
 #include <boost/asio/io_service.hpp>
 #include <boost/asio/deadline_timer.hpp>
@@ -46,6 +47,8 @@ public:
 	static size_t computePointsPerDgram(int returnMode);
 	static size_t computePointsPerFrame(int returnMode, size_t nDgramsPerFrame)
 		{ return computePointsPerDgram(returnMode) * nDgramsPerFrame; }
+	static bool compactionIsNeeded(uint32_t nSucceeded, uint32_t nTotal)
+		{ return nSucceeded != 0 && nTotal != 0 && nSucceeded != nTotal; }
 
 private:
 	PcloudStimulusBuffer& parent;
@@ -86,13 +89,20 @@ private:
 	// Track which slots have been successfully assembled and maintain persistent iovecs
 	std::vector<SlotAssemblyDesc> assembledSlotsTracker;
 
+	// Random number generation for dummy slot creation
+	std::random_device randomDevice;
+	std::mt19937 randomGenerator;
+
 	void fillUnAssembledSlotsWithDummyDgrams();
-	void printSlotBytes(size_t slotIndex, size_t nBytes);
+	void randomDummySlotFiller(AsynchronousLoop& loop);
 	void onEventfdRead(
 		const boost::system::error_code& error, std::size_t bytes_transferred);
 
 	class AssembleFrameReq;
 	friend class AssembleFrameReq;
+
+public:
+	void printSlotBytes(size_t slotIndex, size_t nBytes);
 };
 
 } // namespace stim_buff