Pass app to multiprocessing pool workers.

celery/worker/__init__.py

@@ -30,12 +30,13 @@ WORKER_SIGRESET = frozenset(["SIGTERM",
 WORKER_SIGIGNORE = frozenset(["SIGINT"])
 
 
-def process_initializer():
+def process_initializer(app):
     """Initializes the process so it can be used to process tasks.
 
     Used for multiprocessing environments.
 
     """
+    app = app_or_default(app)
     map(platform.reset_signal, WORKER_SIGRESET)
     map(platform.ignore_signal, WORKER_SIGIGNORE)
     platform.set_mp_process_title("celeryd")
@@ -43,8 +44,7 @@ def process_initializer():
     # This is for windows and other platforms not supporting
     # fork(). Note that init_worker makes sure it's only
     # run once per process.
-    from celery.loaders import current_loader
-    current_loader().init_worker()
+    app.loader.init_worker()
 
     signals.worker_process_init.send(sender=None)
 
@@ -122,6 +122,7 @@ class WorkController(object):
         self.pool = instantiate(self.pool_cls, self.concurrency,
                                 logger=self.logger,
                                 initializer=process_initializer,
+                                initargs=(self.app, ),
                                 maxtasksperchild=self.max_tasks_per_child,
                                 timeout=self.task_time_limit,
                                 soft_timeout=self.task_soft_time_limit,