Fix model extract race issue to all classes

modules/ANSOCR/ANSOCR.cpp

@@ -9,6 +9,15 @@ namespace ANSCENTER {
 		{
 			bool result = ANSOCRBase::Initialize(licenseKey, modelConfig, modelZipFilePath, modelZipPassword, engineMode);
 			if (!result) return false;
+			// Serialize derived init against concurrent extract re-entries on the
+			// same folder. See ModelFolderLockGuard in Utility.h.
+			ANSCENTER::ModelFolderLockGuard _flg(_modelFolder, "ANSOCR::Initialize");
+			if (!_flg.acquired()) {
+			    this->_logger.LogError("ANSOCR::Initialize",
+			        "Timed out waiting for model-folder lock: " + _modelFolder,
+			        __FILE__, __LINE__);
+			    return false;
+			}
 			auto option = fastdeploy::RuntimeOption();
 			// Add default values to modelConfig if required.
 			_modelConfig.precisionType = "fp32";