I am done

rl/Lib/site-packages/torch/_streambase.py

@@ -0,0 +1,46 @@
+# mypy: allow-untyped-defs
+from abc import ABC, abstractmethod
+
+
+class _StreamBase(ABC):
+    r"""Base stream class abstraction for multi backends Stream to herit from"""
+
+    @abstractmethod
+    def wait_event(self, event) -> None:
+        raise NotImplementedError
+
+    @abstractmethod
+    def wait_stream(self, stream) -> None:
+        raise NotImplementedError
+
+    @abstractmethod
+    def record_event(self, event=None) -> None:
+        raise NotImplementedError
+
+    @abstractmethod
+    def query(self) -> bool:
+        raise NotImplementedError
+
+    @abstractmethod
+    def synchronize(self) -> None:
+        raise NotImplementedError
+
+    @abstractmethod
+    def __eq__(self, stream) -> bool:
+        raise NotImplementedError
+
+
+class _EventBase(ABC):
+    r"""Base Event class abstraction for multi backends Event to herit from"""
+
+    @abstractmethod
+    def wait(self, stream=None) -> None:
+        raise NotImplementedError
+
+    @abstractmethod
+    def query(self) -> bool:
+        raise NotImplementedError
+
+    @abstractmethod
+    def synchronize(self) -> None:
+        raise NotImplementedError