Issue #27041: asyncio: Add loop.create_future method

1 files changed, 11 insertions, 7 deletions

diff --git a/Lib/asyncio/base_events.py b/Lib/asyncio/base_events.py
index ada178f37f..313cc316e5 100644
--- a/Lib/asyncio/base_events.py
+++ b/Lib/asyncio/base_events.py
@@ -209,7 +209,7 @@ class Server(events.AbstractServer):
     def wait_closed(self):
         if self.sockets is None or self._waiters is None:
             return
-        waiter = futures.Future(loop=self._loop)
+        waiter = self._loop.create_future()
         self._waiters.append(waiter)
         yield from waiter
 
@@ -243,6 +243,10 @@ class BaseEventLoop(events.AbstractEventLoop):
                 % (self.__class__.__name__, self.is_running(),
                    self.is_closed(), self.get_debug()))
 
+    def create_future(self):
+        """Create a Future object attached to the loop."""
+        return futures.Future(loop=self)
+
     def create_task(self, coro):
         """Schedule a coroutine object.
 
@@ -536,7 +540,7 @@ class BaseEventLoop(events.AbstractEventLoop):
             assert not args
             assert not isinstance(func, events.TimerHandle)
             if func._cancelled:
-                f = futures.Future(loop=self)
+                f = self.create_future()
                 f.set_result(None)
                 return f
             func, args = func._callback, func._args
@@ -579,7 +583,7 @@ class BaseEventLoop(events.AbstractEventLoop):
                     family=0, type=0, proto=0, flags=0):
         info = _ipaddr_info(host, port, family, type, proto)
         if info is not None:
-            fut = futures.Future(loop=self)
+            fut = self.create_future()
             fut.set_result([info])
             return fut
         elif self._debug:
@@ -720,7 +724,7 @@ class BaseEventLoop(events.AbstractEventLoop):
     def _create_connection_transport(self, sock, protocol_factory, ssl,
                                      server_hostname):
         protocol = protocol_factory()
-        waiter = futures.Future(loop=self)
+        waiter = self.create_future()
         if ssl:
             sslcontext = None if isinstance(ssl, bool) else ssl
             transport = self._make_ssl_transport(
@@ -840,7 +844,7 @@ class BaseEventLoop(events.AbstractEventLoop):
                 raise exceptions[0]
 
         protocol = protocol_factory()
-        waiter = futures.Future(loop=self)
+        waiter = self.create_future()
         transport = self._make_datagram_transport(
             sock, protocol, r_addr, waiter)
         if self._debug:
@@ -979,7 +983,7 @@ class BaseEventLoop(events.AbstractEventLoop):
     @coroutine
     def connect_read_pipe(self, protocol_factory, pipe):
         protocol = protocol_factory()
-        waiter = futures.Future(loop=self)
+        waiter = self.create_future()
         transport = self._make_read_pipe_transport(pipe, protocol, waiter)
 
         try:
@@ -996,7 +1000,7 @@ class BaseEventLoop(events.AbstractEventLoop):
     @coroutine
     def connect_write_pipe(self, protocol_factory, pipe):
         protocol = protocol_factory()
-        waiter = futures.Future(loop=self)
+        waiter = self.create_future()
         transport = self._make_write_pipe_transport(pipe, protocol, waiter)
 
         try: