Merge pull request PaddlePaddle#1490 from felixhjh/dev_stop

fix windows gid recording

Author: bjjwwang

python/paddle_serving_server/util.py

@@ -16,6 +16,7 @@
 import os
 import time
 import json
+import platform
 from paddle_serving_server.env import CONF_HOME
 
 
@@ -91,7 +92,10 @@ def dump_pid_file(portList, model):
        dump_pid_file([9494, 10082], 'serve')
     '''
     pid = os.getpid()
-    gid = os.getpgid(pid)
+    if platform.system() == "Windows":
+        gid = pid
+    else:
+        gid = os.getpgid(pid)      
     pidInfoList = []
     filepath = os.path.join(CONF_HOME, "ProcessInfo.json")
     if os.path.exists(filepath):