add csrc code

csrc/fastdeploy/utils/unique_ptr.h

@@ -0,0 +1,58 @@
+/* Copyright (c) 2022 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 <memory>
+
+namespace fastdeploy {
+namespace utils {
+// Trait to select overloads and return types for MakeUnique.
+template <typename T>
+struct MakeUniqueResult {
+  using scalar = std::unique_ptr<T>;
+};
+template <typename T>
+struct MakeUniqueResult<T[]> {
+  using array = std::unique_ptr<T[]>;
+};
+template <typename T, size_t N>
+struct MakeUniqueResult<T[N]> {
+  using invalid = void;
+};
+
+// MakeUnique<T>(...) is an early implementation of C++14 std::make_unique.
+// It is designed to be 100% compatible with std::make_unique so that the
+// eventual switchover will be a simple renaming operation.
+template <typename T, typename... Args>
+typename MakeUniqueResult<T>::scalar make_unique(Args &&... args) {  // NOLINT
+  return std::unique_ptr<T>(
+      new T(std::forward<Args>(args)...));  // NOLINT(build/c++11)
+}
+
+// Overload for array of unknown bound.
+// The allocation of arrays needs to use the array form of new,
+// and cannot take element constructor arguments.
+template <typename T>
+typename MakeUniqueResult<T>::array make_unique(size_t n) {
+  return std::unique_ptr<T>(new typename std::remove_extent<T>::type[n]());
+}
+
+// Reject arrays of known bound.
+template <typename T, typename... Args>
+typename MakeUniqueResult<T>::invalid make_unique(Args &&... /* args */) =
+    delete;  // NOLINT
+
+}  // namespace utils
+}  // namespace fastdeploy