Merge latest Tulip into asyncio

Lib/asyncio/base_subprocess.py

@@ -114,7 +114,6 @@ class BaseSubprocessTransport(transports.SubprocessTransport):
         assert returncode is not None, returncode
         assert self._returncode is None, self._returncode
         self._returncode = returncode
-        self._loop._subprocess_closed(self)
         self._call(self._protocol.process_exited)
         self._try_finish()
 

Lib/asyncio/unix_events.py

@@ -169,9 +169,6 @@ class _UnixSelectorEventLoop(selector_events.BaseSelectorEventLoop):
     def _child_watcher_callback(self, pid, returncode, transp):
         self.call_soon_threadsafe(transp._process_exited, returncode)
 
-    def _subprocess_closed(self, transp):
-        pass
-
 
 def _set_nonblocking(fd):
     flags = fcntl.fcntl(fd, fcntl.F_GETFL)

Lib/asyncio/windows_events.py

@@ -178,9 +178,6 @@ class ProactorEventLoop(proactor_events.BaseProactorEventLoop):
         yield from transp._post_init()
         return transp
 
-    def _subprocess_closed(self, transport):
-        pass
-
 
 class IocpProactor:
     """Proactor implementation using IOCP."""