chore: import upstream snapshot with attribution

python/paddle/device/custom_streams.py

@@ -0,0 +1,56 @@
+# Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from __future__ import annotations
+
+from paddle.base.core import (
+    CustomDeviceEvent as Event,
+    CustomDeviceStream as Stream,
+    CustomPlace,
+)
+
+
+def create_stream(
+    device_id: CustomPlace | int | None = None,
+    priority: int = 2,
+    device_type: str | None = None,  # Ignored for compatibility
+    blocking: bool = False,  # Ignored for compatibility
+):
+    """
+    Factory Function, used to create Custom Stream
+    """
+    return Stream(
+        device_type,
+        device_id,
+        priority,
+        blocking=blocking,
+    )
+
+
+def create_event(
+    enable_timing: bool = False,
+    blocking: bool = False,
+    interprocess: bool = False,
+    device_type: str | None = None,
+    device_id: int = 0,
+):
+    """
+    Factory Function, used to create Custom Event
+    """
+    return Event(
+        device_type,
+        device_id,
+        enable_timing,
+        blocking,
+        interprocess,
+    )