Mono: Change BindingsGenerator singleton to avoid StringName leaks

modules/mono/csharp_script.cpp

@@ -124,6 +124,14 @@ void CSharpLanguage::finish() {
 
 	finalizing = true;
 
+#ifdef TOOLS_ENABLED
+	// Must be here, to avoid StringName leaks
+	if (BindingsGenerator::singleton) {
+		memdelete(BindingsGenerator::singleton);
+		BindingsGenerator::singleton = NULL;
+	}
+#endif
+
 	// Release gchandle bindings before finalizing mono runtime
 	gchandle_bindings.clear();
 

modules/mono/editor/bindings_generator.cpp

@@ -108,6 +108,8 @@ const char *BindingsGenerator::TypeInterface::DEFAULT_VARARG_C_IN = "\t%0 %1_in
 
 bool BindingsGenerator::verbose_output = false;
 
+BindingsGenerator *BindingsGenerator::singleton = NULL;
+
 static String snake_to_pascal_case(const String &p_identifier, bool p_input_is_upper = false) {
 
 	String ret;
@@ -2466,8 +2468,7 @@ void BindingsGenerator::_populate_global_constants() {
 	}
 }
 
-BindingsGenerator::BindingsGenerator() :
-		name_cache(NameCache::get_singleton()) {
+void BindingsGenerator::initialize() {
 
 	EditorHelp::generate_doc();
 
@@ -2509,7 +2510,7 @@ void BindingsGenerator::handle_cmdline_args(const List<String> &p_cmdline_args)
 			const List<String>::Element *path_elem = elem->next();
 
 			if (path_elem) {
-				if (get_singleton().generate_glue(path_elem->get()) != OK)
+				if (get_singleton()->generate_glue(path_elem->get()) != OK)
 					ERR_PRINT("Mono glue generation failed");
 				elem = elem->next();
 			} else {
@@ -2523,7 +2524,7 @@ void BindingsGenerator::handle_cmdline_args(const List<String> &p_cmdline_args)
 			const List<String>::Element *path_elem = elem->next();
 
 			if (path_elem) {
-				if (get_singleton().generate_cs_core_project(path_elem->get()) != OK)
+				if (get_singleton()->generate_cs_core_project(path_elem->get()) != OK)
 					ERR_PRINT("Generation of solution and C# project for the Core API failed");
 				elem = elem->next();
 			} else {
@@ -2538,7 +2539,7 @@ void BindingsGenerator::handle_cmdline_args(const List<String> &p_cmdline_args)
 
 			if (path_elem) {
 				if (path_elem->next()) {
-					if (get_singleton().generate_cs_editor_project(path_elem->get(), path_elem->next()->get()) != OK)
+					if (get_singleton()->generate_cs_editor_project(path_elem->get(), path_elem->next()->get()) != OK)
 						ERR_PRINT("Generation of solution and C# project for the Editor API failed");
 					elem = path_elem->next();
 				} else {

modules/mono/editor/bindings_generator.h

@@ -145,7 +145,7 @@ class BindingsGenerator {
 		}
 
 		MethodInterface() {
-			return_type = NameCache::get_singleton().type_void;
+			return_type = BindingsGenerator::get_singleton()->name_cache.type_void;
 			is_vararg = false;
 			is_virtual = false;
 			requires_object_call = false;
@@ -469,16 +469,11 @@ class BindingsGenerator {
 			enum_Error = StaticCString::create("Error");
 		}
 
-		static NameCache &get_singleton() {
-			static NameCache singleton;
-			return singleton;
-		}
-
 		NameCache(const NameCache &);
 		NameCache &operator=(const NameCache &);
 	};
 
-	const NameCache &name_cache;
+	NameCache name_cache;
 
 	const List<InternalCall>::Element *find_icall_by_name(const String &p_name, const List<InternalCall> &p_list) {
 		const List<InternalCall>::Element *it = p_list.front();
@@ -525,18 +520,26 @@ class BindingsGenerator {
 
 	Error _save_file(const String &path, const List<String> &content);
 
-	BindingsGenerator();
+	BindingsGenerator() {}
 
 	BindingsGenerator(const BindingsGenerator &);
 	BindingsGenerator &operator=(const BindingsGenerator &);
 
+	friend class CSharpLanguage;
+	static BindingsGenerator *singleton;
+
 public:
 	Error generate_cs_core_project(const String &p_output_dir, bool p_verbose_output = true);
 	Error generate_cs_editor_project(const String &p_output_dir, const String &p_core_dll_path, bool p_verbose_output = true);
 	Error generate_glue(const String &p_output_dir);
 
-	static BindingsGenerator &get_singleton() {
-		static BindingsGenerator singleton;
+	void initialize();
+
+	_FORCE_INLINE_ static BindingsGenerator *get_singleton() {
+		if (!singleton) {
+			singleton = memnew(BindingsGenerator);
+			singleton->initialize();
+		}
 		return singleton;
 	}
 

modules/mono/editor/godotsharp_builds.cpp

@@ -238,12 +238,12 @@ bool GodotSharpBuilds::make_api_sln(GodotSharpBuilds::APIType p_api_type) {
 #error "How am I supposed to generate the bindings?"
 #endif
 
-		BindingsGenerator &gen = BindingsGenerator::get_singleton();
+		BindingsGenerator *gen = BindingsGenerator::get_singleton();
 		bool gen_verbose = OS::get_singleton()->is_stdout_verbose();
 
 		Error err = p_api_type == API_CORE ?
-							gen.generate_cs_core_project(api_sln_dir, gen_verbose) :
-							gen.generate_cs_editor_project(api_sln_dir, core_api_assembly, gen_verbose);
+							gen->generate_cs_core_project(api_sln_dir, gen_verbose) :
+							gen->generate_cs_editor_project(api_sln_dir, core_api_assembly, gen_verbose);
 
 		if (err != OK) {
 			show_build_error_dialog("Failed to generate " + api_name + " solution. Error: " + itos(err));