Both the 'pause' state and the 'menu' state return 1 - so that

we can signal to the Apple upper-layer function that we want
to run CFRunLoopWakeUp

frontend/frontend.c

@@ -56,7 +56,9 @@
 
 int main_entry_decide(signature(), args_type() args)
 {
-   if (rarch_main_iterate() == -1)
+   int ret = rarch_main_iterate();
+
+   if (ret == -1)
    {
       if (g_extern.core_shutdown_initiated 
             && g_settings.load_dummy_on_core_shutdown)
@@ -66,13 +68,12 @@ int main_entry_decide(signature(), args_type() args)
          g_extern.core_shutdown_initiated = false;
          return 0;
       }
-      return 1;
    }
 
    if (driver.frontend_ctx && driver.frontend_ctx->process_events)
       driver.frontend_ctx->process_events(args);
 
-   return 0;
+   return ret;
 }
 
 void main_exit(args_type() args)
@@ -241,7 +242,7 @@ returntype main_entry(signature())
 #endif
 
 #if defined(HAVE_MAIN_LOOP)
-   while (!main_entry_decide(signature_expand(), args));
+   while (main_entry_decide(signature_expand(), args) != -1);
 
    main_exit(args);
 #endif

frontend/platform/platform_apple.c

@@ -28,12 +28,17 @@ static CFRunLoopObserverRef iterate_observer;
 
 static void do_iteration(void)
 {
-   if (main_entry_decide(0, NULL, NULL))
+   int ret = main_entry_decide(0, NULL, NULL);
+
+   if (ret == -1)
    {
       main_exit(NULL);
       return;
    }
 
+   if (ret) 
+      CFRunLoopWakeUp(CFRunLoopGetMain());
+
    /* TODO/FIXME
       I am almost positive that this is not necessary and is actually a
       bad thing.
@@ -91,10 +96,6 @@ static void do_iteration(void)
       "ugly way" first because it is the most expedient and
       safe. Other eyeballs should decide if it isn't necessary.
       */
-#if 0
-   if ( ! g_extern.is_menu ) 
-     CFRunLoopWakeUp(CFRunLoopGetMain());
-#endif
 }
 
 void apple_start_iteration(void)

frontend/platform/platform_emscripten.c

@@ -27,7 +27,9 @@
 
 static void emscripten_mainloop(void)
 {
-   if (main_entry_decide(0, NULL, NULL))
+   int ret = main_entry_decide(0, NULL, NULL)
+
+   if (ret == -1)
    {
       main_exit(NULL);
       exit(0);

retroarch.c

@@ -3221,16 +3221,19 @@ static inline int time_to_exit(retro_input_t input)
 
 /* Returns:
  *  0  -  Successful iteration.
+ *  1  -  Forcibly wake up the loop.
  * -1  -  Quit out of iteration loop.
  */
+
 int rarch_main_iterate(void)
 {
    unsigned i;
+   retro_input_t trigger_input;
+   int ret = 0;
    static retro_input_t last_input = 0;
-   retro_input_t old_input, trigger_input;
+   retro_input_t old_input = last_input;
    retro_input_t input = input_keys_pressed();
 
-   old_input = last_input;
    last_input = input;
 
    if (driver.flushing_input)
@@ -3258,6 +3261,7 @@ int rarch_main_iterate(void)
       if (!menu_iterate(input, old_input, trigger_input))
          rarch_main_set_state(RARCH_ACTION_STATE_MENU_RUNNING_FINISHED);
 
+      ret = 1;
       goto success;
    }
 #endif
@@ -3274,9 +3278,7 @@ int rarch_main_iterate(void)
       driver.retro_ctx.poll_cb();
       rarch_sleep(10);
 
-      /* TODO - maybe change this from 0 to something else
-       * to signal that RetroArch is currently paused. */
-      return 0;
+      return 1;
    }
 
 #if defined(HAVE_THREADS)
@@ -3338,7 +3340,7 @@ success:
    if (g_settings.fastforward_ratio_throttle_enable)
       limit_frame_time();
 
-   return 0;
+   return ret;
 }
 
 void rarch_main_deinit(void)