1 files changed, 33 insertions, 13 deletions
diff --git a/thirdparty/thorvg/src/renderer/tvgTaskScheduler.h b/thirdparty/thorvg/src/renderer/tvgTaskScheduler.h
index 483e084880..58918e88f0 100644
--- a/thirdparty/thorvg/src/renderer/tvgTaskScheduler.h
+++ b/thirdparty/thorvg/src/renderer/tvgTaskScheduler.h
@@ -25,22 +25,13 @@
 
 #include <mutex>
 #include <condition_variable>
+
 #include "tvgCommon.h"
 #include "tvgInlist.h"
 
-namespace tvg
-{
-
-struct Task;
+namespace tvg {
 
-struct TaskScheduler
-{
-    static unsigned threads();
-    static void init(unsigned threads);
-    static void term();
-    static void request(Task* task);
-    static void async(bool on);
-};
+#ifdef THORVG_THREAD_SUPPORT
 
 struct Task
 {
@@ -86,7 +77,36 @@ private:
     friend struct TaskSchedulerImpl;
 };
 
-}
+#else  //THORVG_THREAD_SUPPORT
+
+struct Task
+{
+public:
+    INLIST_ITEM(Task);
+
+    virtual ~Task() = default;
+    void done() {}
+
+protected:
+    virtual void run(unsigned tid) = 0;
+
+private:
+    friend struct TaskSchedulerImpl;
+};
+
+#endif  //THORVG_THREAD_SUPPORT
+
+
+struct TaskScheduler
+{
+    static uint32_t threads();
+    static void init(uint32_t threads);
+    static void term();
+    static void request(Task* task);
+    static void async(bool on);
+};
+
+}  //namespace
 
 #endif //_TVG_TASK_SCHEDULER_H_