cpp/perfevents/detail/make_unique.h

/**
 * Copyright 2004-present, Facebook, Inc.
 *
 * 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>
#include <type_traits>

namespace facebook {
namespace perfevents {
namespace detail {

// Array specialization
template <typename T>
typename std::enable_if<std::is_array<T>::value, std::unique_ptr<T>>::type
make_unique(size_t size) {
  static_assert(
      std::extent<T>::value == 0,
      "Cannot use make_unique<T[N]>, use make_unique<T[]> instead");
  typedef typename std::remove_extent<T>::type U;
  return std::unique_ptr<T>(new U[size]);
}

template <typename T, typename... Args>
std::unique_ptr<T> make_unique(Args&&... args) {
  return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
}

} // namespace detail
} // namespace perfevents
} // namespace facebook