Keep Tuple Counts if restarting due to Difficulty Changes

Signed-off-by: Pttn <28868425+Pttn@users.noreply.github.com>

Miner.cpp

@@ -347,7 +347,9 @@ void Miner::startThreads() {
 		ERRORMSG("The miner is already running");
 	else {
 		_running = true;
-		_statManager.start(_parameters.pattern.size());
+		if (!_keepStats)
+			_statManager.start(_parameters.pattern.size());
+		_keepStats = false;
 		std::cout << "Starting the miner's master thread..." << std::endl;
 		_masterThread = std::thread(&Miner::_manageTasks, this);
 		std::cout << "Starting " << _parameters.threads << " miner's worker threads..." << std::endl;
@@ -880,12 +882,16 @@ void Miner::_manageTasks() {
 	_currentWorkIndex = 0;
 	uint32_t oldHeight(0);
 	while (_running && _client->getJob(job)) {
-		if (job.difficulty < _difficultyAtInit/_parameters.restartDifficultyFactor || job.difficulty > _difficultyAtInit*_parameters.restartDifficultyFactor) // Restart to retune parameters.
+		if (job.difficulty < _difficultyAtInit/_parameters.restartDifficultyFactor || job.difficulty > _difficultyAtInit*_parameters.restartDifficultyFactor) { // Restart to retune parameters.
+			_keepStats = true;
 			_shouldRestart = true;
+		}
 		if (std::dynamic_pointer_cast<NetworkedClient>(_client) != nullptr) {
 			const NetworkInfo networkInfo(std::dynamic_pointer_cast<NetworkedClient>(_client)->info());
-			if (!hasAcceptedPatterns(networkInfo.acceptedPatterns)) // Restart if the pattern changed and is no longer compatible with the current one (notably, for the 0.20 fork)
+			if (!hasAcceptedPatterns(networkInfo.acceptedPatterns)) { // Restart if the pattern changed and is no longer compatible with the current one (notably, for the 0.20 fork)
+				_keepStats = false;
 				_shouldRestart = true;
+			}
 		}
 		_presieveTime = _presieveTime.zero();
 		_sieveTime = _sieveTime.zero();

Miner.hpp

@@ -117,7 +117,7 @@ class Miner {
 	std::vector<mpz_class> _primorialOffsets;
 	std::vector<uint64_t> _halfPattern, _primorialOffsetDiff;
 	// Miner state variables
-	bool _inited, _running, _shouldRestart;
+	bool _inited, _running, _shouldRestart, _keepStats;
 	double _difficultyAtInit; // Restart the miner if the Difficulty changed a lot to retune
 	TsQueue<Task> _presieveTasks, _tasks;
 	TsQueue<TaskDoneInfo> _tasksDoneInfos;
@@ -166,7 +166,7 @@ class Miner {
 	Miner(const Options &options) :
 		_mode(options.mode()), _parameters(MinerParameters()),
 		_client(nullptr),
-		_inited(false), _running(false), _shouldRestart(false) {
+		_inited(false), _running(false), _shouldRestart(false), _keepStats(false) {
 		_nPrimes = 0;
 		_primesIndexThreshold = 0;
 	}