asyncio: updates for 3.11 (#7844)

CPython changes:

- 13c10bfb77
- 9523c0d84f
- 9f04ee569c
- d03acd7270
- 195a46d6ff

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

stdlib/asyncio/locks.pyi

@@ -1,4 +1,6 @@
+import enum
 import sys
+from _typeshed import Self
 from collections import deque
 from collections.abc import Callable, Generator
 from types import TracebackType
@@ -8,7 +10,12 @@ from typing_extensions import Literal
 from .events import AbstractEventLoop
 from .futures import Future
 
-if sys.version_info >= (3, 7):
+if sys.version_info >= (3, 11):
+    from .mixins import _LoopBoundMixin
+
+if sys.version_info >= (3, 11):
+    __all__ = ("Lock", "Event", "Condition", "Semaphore", "BoundedSemaphore", "Barrier")
+elif sys.version_info >= (3, 7):
     __all__ = ("Lock", "Event", "Condition", "Semaphore", "BoundedSemaphore")
 else:
     __all__ = ["Lock", "Event", "Condition", "Semaphore", "BoundedSemaphore"]
@@ -40,20 +47,32 @@ else:
         ) -> None: ...
 
 class Lock(_ContextManagerMixin):
-    def __init__(self, *, loop: AbstractEventLoop | None = ...) -> None: ...
+    if sys.version_info >= (3, 11):
+        def __init__(self) -> None: ...
+    else:
+        def __init__(self, *, loop: AbstractEventLoop | None = ...) -> None: ...
+
     def locked(self) -> bool: ...
     async def acquire(self) -> Literal[True]: ...
     def release(self) -> None: ...
 
 class Event:
-    def __init__(self, *, loop: AbstractEventLoop | None = ...) -> None: ...
+    if sys.version_info >= (3, 11):
+        def __init__(self) -> None: ...
+    else:
+        def __init__(self, *, loop: AbstractEventLoop | None = ...) -> None: ...
+
     def is_set(self) -> bool: ...
     def set(self) -> None: ...
     def clear(self) -> None: ...
     async def wait(self) -> Literal[True]: ...
 
 class Condition(_ContextManagerMixin):
-    def __init__(self, lock: Lock | None = ..., *, loop: AbstractEventLoop | None = ...) -> None: ...
+    if sys.version_info >= (3, 11):
+        def __init__(self, lock: Lock | None = ...) -> None: ...
+    else:
+        def __init__(self, lock: Lock | None = ..., *, loop: AbstractEventLoop | None = ...) -> None: ...
+
     def locked(self) -> bool: ...
     async def acquire(self) -> Literal[True]: ...
     def release(self) -> None: ...
@@ -65,11 +84,39 @@ class Condition(_ContextManagerMixin):
 class Semaphore(_ContextManagerMixin):
     _value: int
     _waiters: deque[Future[Any]]
-    def __init__(self, value: int = ..., *, loop: AbstractEventLoop | None = ...) -> None: ...
+    if sys.version_info >= (3, 11):
+        def __init__(self, value: int = ...) -> None: ...
+    else:
+        def __init__(self, value: int = ..., *, loop: AbstractEventLoop | None = ...) -> None: ...
+
     def locked(self) -> bool: ...
     async def acquire(self) -> Literal[True]: ...
     def release(self) -> None: ...
     def _wake_up_next(self) -> None: ...
 
 class BoundedSemaphore(Semaphore):
-    def __init__(self, value: int = ..., *, loop: AbstractEventLoop | None = ...) -> None: ...
+    if sys.version_info >= (3, 11):
+        def __init__(self, value: int = ...) -> None: ...
+    else:
+        def __init__(self, value: int = ..., *, loop: AbstractEventLoop | None = ...) -> None: ...
+
+if sys.version_info >= (3, 11):
+    class _BarrierState(enum.Enum):  # undocumented
+        FILLING: str
+        DRAINING: str
+        RESETTING: str
+        BROKEN: str
+
+    class Barrier(_LoopBoundMixin):
+        def __init__(self, parties: int) -> None: ...
+        async def __aenter__(self: Self) -> Self: ...
+        async def __aexit__(self, *args: object) -> None: ...
+        async def wait(self) -> int: ...
+        async def abort(self) -> None: ...
+        async def reset(self) -> None: ...
+        @property
+        def parties(self) -> int: ...
+        @property
+        def n_waiting(self) -> int: ...
+        @property
+        def broken(self) -> bool: ...