second commit

env/lib/python3.11/site-packages/uvloop/handles/async_.pyx

@@ -0,0 +1,56 @@
+@cython.no_gc_clear
+cdef class UVAsync(UVHandle):
+    cdef _init(self, Loop loop, method_t callback, object ctx):
+        cdef int err
+
+        self._start_init(loop)
+
+        self._handle = <uv.uv_handle_t*>PyMem_RawMalloc(sizeof(uv.uv_async_t))
+        if self._handle is NULL:
+            self._abort_init()
+            raise MemoryError()
+
+        err = uv.uv_async_init(self._loop.uvloop,
+                               <uv.uv_async_t*>self._handle,
+                               __uvasync_callback)
+        if err < 0:
+            self._abort_init()
+            raise convert_error(err)
+
+        self._finish_init()
+
+        self.callback = callback
+        self.ctx = ctx
+
+    cdef send(self):
+        cdef int err
+
+        self._ensure_alive()
+
+        err = uv.uv_async_send(<uv.uv_async_t*>self._handle)
+        if err < 0:
+            exc = convert_error(err)
+            self._fatal_error(exc, True)
+            return
+
+    @staticmethod
+    cdef UVAsync new(Loop loop, method_t callback, object ctx):
+        cdef UVAsync handle
+        handle = UVAsync.__new__(UVAsync)
+        handle._init(loop, callback, ctx)
+        return handle
+
+
+cdef void __uvasync_callback(
+    uv.uv_async_t* handle,
+) noexcept with gil:
+    if __ensure_handle_data(<uv.uv_handle_t*>handle, "UVAsync callback") == 0:
+        return
+
+    cdef:
+        UVAsync async_ = <UVAsync> handle.data
+        method_t cb = async_.callback
+    try:
+        cb(async_.ctx)
+    except BaseException as ex:
+        async_._error(ex, False)