chore: import upstream snapshot with attribution

paddle/fluid/pybind/python_callable_registry.h

@@ -0,0 +1,48 @@
+// Copyright (c) 2024 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.
+#pragma once
+#include <pybind11/pybind11.h>
+
+#include <unordered_map>
+
+#include "paddle/pir/include/core/block.h"
+#include "paddle/pir/include/core/operation.h"
+#include "paddle/pir/include/core/program.h"
+#include "paddle/pir/include/core/value.h"
+
+namespace paddle {
+namespace pybind {
+
+namespace py = ::pybind11;
+
+class PYBIND11_HIDDEN PythonCallableRegistrar {
+  DISABLE_COPY_AND_ASSIGN(PythonCallableRegistrar);
+  PythonCallableRegistrar() = default;
+
+ public:
+  static PythonCallableRegistrar& GetInstance();
+
+  void Register(uint64_t unique_id, const py::object& callable);
+
+  py::object* Get(uint64_t unique_id);
+
+ private:
+  std::unordered_map<uint64_t, py::object> python_callable_registry_;
+};
+
+void PirCallPythonFunc(py::object* callable,
+                       const std::vector<pir::Value>& ins,
+                       std::vector<pir::Value>* outs);
+}  // namespace pybind
+}  // namespace paddle