Move scheduler code from tp_worker.py to scheduler.py (#1538)

python/sglang/srt/managers/io_struct.py

@@ -18,7 +18,6 @@ The definition of objects transfered between different
 processes (TokenizerManager, DetokenizerManager, Controller).
 """
 
-import copy
 import uuid
 from dataclasses import dataclass
 from typing import Dict, List, Optional, Union
@@ -53,12 +52,12 @@ class GenerateReqInput:
     stream: bool = False
     # The modalities of the image data [image, multi-images, video]
     modalities: Optional[List[str]] = None
-
-    is_single: bool = True
-
     # LoRA related
     lora_path: Optional[Union[List[Optional[str]], Optional[str]]] = None
 
+    # Whether it is a single request or a batch request
+    is_single: bool = True
+
     def post_init(self):
         if (self.text is None and self.input_ids is None) or (
             self.text is not None and self.input_ids is not None
@@ -307,10 +306,6 @@ class BatchTokenIDOut:
     meta_info: List[Dict]
     finished_reason: List[BaseFinishReason]
 
-    def __post_init__(self):
-        # deepcopy meta_info to avoid modification in place
-        self.meta_info = copy.deepcopy(self.meta_info)
-
 
 @dataclass
 class BatchStrOut: