Make C Interface exceptions thread local.

CInterface/Core.cpp

@@ -1,4 +1,3 @@
 #include "Core.hpp"
 
-std::string ExceptionHandler::_lastException = "";
 export const char* Arbutils_C_GetLastException() { return ExceptionHandler::GetLastException(); }

CInterface/Core.hpp

@@ -9,11 +9,11 @@
 #define ArbutilsException 3;
 
 class ExceptionHandler {
-    static std::string _lastException;
+    static thread_local std::string _ArbutilsLastException;
 
 public:
-    static void SetLastException(const std::exception& e) { _lastException = std::string(e.what()); }
-    static const char* GetLastException() { return _lastException.c_str(); }
+    static void SetLastException(const std::exception& e) { _ArbutilsLastException = std::string(e.what()); }
+    static const char* GetLastException() { return _ArbutilsLastException.c_str(); }
 };
 
 #define Try(data)                                                                                                      \