clean up step function (#635)

python/sglang/srt/managers/controller/tp_worker.py

@@ -228,6 +228,18 @@ class ModelTpServer:
 
                     # Print stats
                     if self.tp_rank == 0 and self.decode_forward_ct % 40 == 0:
+                        self.print_stats()
+
+                    if self.running_batch.is_empty():
+                        self.running_batch = None
+                        break
+
+                    if self.out_pyobjs and self.running_batch.has_stream():
+                        break
+            else:
+                self.check_memory()
+
+    def print_stats(self):
         num_used = self.max_total_num_tokens - (
             self.token_to_kv_pool.available_size()
             + self.tree_cache.evictable_size()
@@ -246,14 +258,7 @@ class ModelTpServer:
             f"#queue-req: {len(self.forward_queue)}"
         )
 
-                    if self.running_batch.is_empty():
-                        self.running_batch = None
-                        break
-
-                    if self.out_pyobjs and self.running_batch.has_stream():
-                        break
-            else:
-                # Check the available size
+    def check_memory(self):
         available_size = (
             self.token_to_kv_pool.available_size()
             + self.tree_cache.evictable_size()