asyncio: sync with Tulip

* Fix a race condition in BaseSubprocessTransport._try_finish().

  If the process exited before the _post_init() method was called, scheduling
  the call to _call_connection_lost() with call_soon() is wrong:
  connection_made() must be called before connection_lost().

  Reuse the BaseSubprocessTransport._call() method to schedule the call to
  _call_connection_lost() to ensure that connection_made() and
  connection_lost() are called in the correct order.

* Add repr(PipeHandle)

* Fix typo

1 files changed, 7 insertions, 0 deletions

diff --git a/Lib/asyncio/windows_utils.py b/Lib/asyncio/windows_utils.py
index 1155a77f34..c6e4bc9e46 100644
--- a/Lib/asyncio/windows_utils.py
+++ b/Lib/asyncio/windows_utils.py
@@ -134,6 +134,13 @@ class PipeHandle:
     def __init__(self, handle):
         self._handle = handle
 
+    def __repr__(self):
+        if self._handle != -1:
+            handle = 'handle=%r' % self._handle
+        else:
+            handle = 'closed'
+        return '<%s %s>' % (self.__class__.__name__, handle)
+
     @property
     def handle(self):
         return self._handle