Crash the server correctly during error (#2231)

python/sglang/srt/managers/detokenizer_manager.py

@@ -15,9 +15,11 @@
 
 import dataclasses
 import logging
+import signal
 from collections import OrderedDict
 from typing import List, Union
 
+import psutil
 import zmq
 
 from sglang.srt.hf_transformers_utils import get_tokenizer
@@ -28,7 +30,7 @@ from sglang.srt.managers.io_struct import (
 )
 from sglang.srt.managers.schedule_batch import FINISH_MATCHED_STR, FINISH_MATCHED_TOKEN
 from sglang.srt.server_args import PortArgs, ServerArgs
-from sglang.srt.utils import configure_logger, get_zmq_socket, kill_parent_process
+from sglang.srt.utils import configure_logger, get_zmq_socket
 from sglang.utils import find_printable_text, get_exception_traceback
 
 logger = logging.getLogger(__name__)
@@ -193,11 +195,12 @@ def run_detokenizer_process(
     port_args: PortArgs,
 ):
     configure_logger(server_args)
+    parent_process = psutil.Process().parent()
 
     try:
         manager = DetokenizerManager(server_args, port_args)
         manager.event_loop()
     except Exception:
-        msg = get_exception_traceback()
-        logger.error(msg)
-        kill_parent_process()
+        traceback = get_exception_traceback()
+        logger.error(f"DetokenizerManager hit an exception: {traceback}")
+        parent_process.send_signal(signal.SIGQUIT)