add --threads param

gunicorn/config.py

@@ -91,11 +91,21 @@ class Config(object):
     @property
     def worker_class(self):
         uri = self.settings['worker_class'].get()
+
+        ## are we using a threaded worker?
+        is_sync = uri.endswith('SyncWorker') or uri == 'sync'
+        if is_sync and self.threads > 1:
+            uri = "gunicorn.workers.gthread.ThreadedWorker"
+
         worker_class = util.load_class(uri)
         if hasattr(worker_class, "setup"):
             worker_class.setup()
         return worker_class
 
+    @property
+    def threads(self):
+        return self.settings['threads'].get()
+
     @property
     def workers(self):
         return self.settings['workers'].get()
@@ -550,6 +560,27 @@ class WorkerClass(Setting):
         can also load the gevent class with ``egg:gunicorn#gevent``
         """
 
+class WorkerThreads(Setting):
+    name = "threads"
+    section = "Worker Processes"
+    cli = ["--threads"]
+    meta = "INT"
+    validator = validate_pos_int
+    type = int
+    default = 1
+    desc = """\
+        The number of worker threads for handling requests.
+
+        Run each worker in prethreaded mode with the specified number of
+        threads per worker.
+
+        A positive integer generally in the 2-4 x $(NUM_CORES) range. You'll
+        want to vary this a bit to find the best for your particular
+        application's work load.
+
+        If it is not defined, the default is 1.
+        """
+
 
 class WorkerConnections(Setting):
     name = "worker_connections"