remove rt_current_module and user can use rt_module_unload to remove a module.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2458 bbd45198-f89e-11dd-88c7-29a3b14d5316

src/idle.c

@@ -131,7 +131,9 @@ void rt_thread_idle_excute(void)
 
 #ifdef RT_USING_MODULE
 		if (module != RT_NULL)
-		{	
+		{
+			extern rt_err_t rt_module_destroy(rt_module_t module);
+
 			/* if sub thread list and main thread are all empty */
 			if ((module->module_thread == RT_NULL) &&
 				rt_list_isempty(&module->module_object[RT_Object_Class_Thread].object_list) )
@@ -139,9 +141,9 @@ void rt_thread_idle_excute(void)
 				module->nref --;
 			}
 
-			/* unload module */
+			/* destroy module */
 			if (module->nref == 0)
-				rt_module_unload(module);
+				rt_module_destroy(module);
 		}
 #endif
 	}

src/scheduler.c

@@ -266,11 +266,6 @@ void rt_schedule(void)
 			from_thread = rt_current_thread;
 			rt_current_thread = to_thread;
 
-#ifdef RT_USING_MODULE
-			rt_module_set((rt_current_thread->module_id != RT_NULL) ? 
-				(rt_module_t)rt_current_thread->module_id : RT_NULL);		
-#endif
-
 			RT_OBJECT_HOOK_CALL(rt_scheduler_hook, (from_thread, to_thread));
 
 			/* switch to new thread */