osi.waitpid patching is broken in eventlet and prevent arbiter to exit.

Waiting upstream fixes, don't patch it for now.

examples/slowclient.py

@@ -3,12 +3,10 @@
 # This file is part of gunicorn released under the MIT license. 
 # See the NOTICE for more information.
 
-from wsgiref.validate import validator
 
 import time
 
 
-@validator
 def app(environ, start_response):
     """Application which cooperatively pauses 10 seconds before responding"""
     data = 'Hello, World!\n'

examples/websocket.py

@@ -17,7 +17,6 @@ from gunicorn.workers.async import ALREADY_HANDLED
 from eventlet import pools
 
 import eventlet
-from eventlet.common import get_errno
 
 class WebSocketWSGI(object):
     def __init__(self, handler):

gunicorn/workers/geventlet.py

@@ -25,7 +25,7 @@ class EventletWorker(AsyncWorker):
         import eventlet
         if eventlet.version_info < (0,9,7):
             raise RuntimeError("You need eventlet >= 0.9.7")
-        eventlet.monkey_patch()
+        eventlet.monkey_patch(os=False)
     
     def init_process(self):
         hubs.use_hub()
@@ -40,20 +40,24 @@ class EventletWorker(AsyncWorker):
         pool = greenpool.GreenPool(self.worker_connections)
         acceptor = greenthread.spawn(self.acceptor, pool)
         
-        while self.alive:
-            self.notify()
+        try:
+            while self.alive:
+                self.notify()
+                
+                if self.ppid != os.getppid():
+                    self.log.info("Parent changed, shutting down: %s" % self)
+                    greenthread.kill(acceptor, eventlet.StopServe)
+                    break
             
-            if self.ppid != os.getppid():
-                self.log.info("Parent changed, shutting down: %s" % self)
-                greenthread.kill(acceptor, eventlet.StopServe)
-                break
-            
-            eventlet.sleep(0.1)            
-
-        with eventlet.Timeout(self.timeout, False):
-            pool.waitall()
-        os._exit(3)
+                eventlet.sleep(0.1)            
 
+            with eventlet.Timeout(self.timeout, False):
+                if pool.waiting():
+                    pool.waitall()
+                
+        except KeyboardInterrupt:
+            pass
+        
     def acceptor(self, pool):
         greenthread.getcurrent()
         while self.alive: