API refactor

venv/lib/python3.12/site-packages/sqlalchemy/util/concurrency.py

@@ -1,5 +1,5 @@
 # util/concurrency.py
-# Copyright (C) 2005-2023 the SQLAlchemy authors and contributors
+# Copyright (C) 2005-2025 the SQLAlchemy authors and contributors
 # <see AUTHORS file>
 #
 # This module is part of SQLAlchemy and is released under
@@ -10,11 +10,15 @@ from __future__ import annotations
 
 import asyncio  # noqa
 import typing
+from typing import Any
+from typing import Callable
+from typing import Coroutine
+from typing import TypeVar
 
 have_greenlet = False
 greenlet_error = None
 try:
-    import greenlet  # type: ignore # noqa: F401
+    import greenlet  # type: ignore[import-untyped,unused-ignore]  # noqa: F401,E501
 except ImportError as e:
     greenlet_error = str(e)
     pass
@@ -22,15 +26,47 @@ else:
     have_greenlet = True
     from ._concurrency_py3k import await_only as await_only
     from ._concurrency_py3k import await_fallback as await_fallback
+    from ._concurrency_py3k import in_greenlet as in_greenlet
     from ._concurrency_py3k import greenlet_spawn as greenlet_spawn
     from ._concurrency_py3k import is_exit_exception as is_exit_exception
     from ._concurrency_py3k import AsyncAdaptedLock as AsyncAdaptedLock
-    from ._concurrency_py3k import (
-        _util_async_run as _util_async_run,
-    )  # noqa: F401
-    from ._concurrency_py3k import (
-        _util_async_run_coroutine_function as _util_async_run_coroutine_function,  # noqa: F401, E501
-    )
+    from ._concurrency_py3k import _Runner
+
+_T = TypeVar("_T")
+
+
+class _AsyncUtil:
+    """Asyncio util for test suite/ util only"""
+
+    def __init__(self) -> None:
+        if have_greenlet:
+            self.runner = _Runner()
+
+    def run(
+        self,
+        fn: Callable[..., Coroutine[Any, Any, _T]],
+        *args: Any,
+        **kwargs: Any,
+    ) -> _T:
+        """Run coroutine on the loop"""
+        return self.runner.run(fn(*args, **kwargs))
+
+    def run_in_greenlet(
+        self, fn: Callable[..., _T], *args: Any, **kwargs: Any
+    ) -> _T:
+        """Run sync function in greenlet. Support nested calls"""
+        if have_greenlet:
+            if self.runner.get_loop().is_running():
+                return fn(*args, **kwargs)
+            else:
+                return self.runner.run(greenlet_spawn(fn, *args, **kwargs))
+        else:
+            return fn(*args, **kwargs)
+
+    def close(self) -> None:
+        if have_greenlet:
+            self.runner.close()
+
 
 if not typing.TYPE_CHECKING and not have_greenlet:
 
@@ -56,6 +92,9 @@ if not typing.TYPE_CHECKING and not have_greenlet:
     def await_fallback(thing):  # type: ignore  # noqa: F811
         return thing
 
+    def in_greenlet():  # type: ignore  # noqa: F811
+        _not_implemented()
+
     def greenlet_spawn(fn, *args, **kw):  # type: ignore  # noqa: F811
         _not_implemented()