Minor WebAssembly adjustments

project/include/system/System.h

@@ -28,6 +28,8 @@ namespace lime {
 
 			static void GCEnterBlocking ();
 			static void GCExitBlocking ();
+			static void GCTryEnterBlocking ();
+			static void GCTryExitBlocking ();
 			static bool GetAllowScreenTimeout ();
 			static std::wstring* GetDeviceModel ();
 			static std::wstring* GetDeviceVendor ();

project/src/backend/sdl/SDLApplication.cpp

@@ -926,8 +926,16 @@ namespace lime {
 
 	void SDLApplication::UpdateFrame () {
 
+		#ifdef EMSCRIPTEN
+		System::GCTryExitBlocking ();
+		#endif
+
 		currentApplication->Update ();
 
+		#ifdef EMSCRIPTEN
+		System::GCTryEnterBlocking ();
+		#endif
+
 	}
 
 

project/src/backend/sdl/SDLWindow.cpp

@@ -201,7 +201,9 @@ namespace lime {
 
 			// if (window->flags & WINDOW_FLAG_VSYNC) {
 
-			// 	sdlRendererFlags |= SDL_RENDERER_PRESENTVSYNC;
+			#ifdef EMSCRIPTEN
+			sdlRendererFlags |= SDL_RENDERER_PRESENTVSYNC;
+			#endif
 
 			// }
 

project/src/system/System.cpp

@@ -42,6 +42,28 @@ namespace lime {
 	}
 
 
+	void System::GCTryEnterBlocking () {
+
+		if (!_isHL) {
+
+			gc_try_blocking ();
+
+		}
+
+	}
+
+
+	void System::GCTryExitBlocking () {
+
+		if (!_isHL) {
+
+			gc_try_unblocking ();
+
+		}
+
+	}
+
+
 	#if defined (HX_WINDOWS) && !defined (HX_WINRT)
 	std::wstring* GetWMIValue (BSTR query, BSTR field) {