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Diffstat (limited to 'extern/ceres/include/ceres/internal/memory.h')
-rw-r--r-- | extern/ceres/include/ceres/internal/memory.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/extern/ceres/include/ceres/internal/memory.h b/extern/ceres/include/ceres/internal/memory.h new file mode 100644 index 00000000000..45c5b67c353 --- /dev/null +++ b/extern/ceres/include/ceres/internal/memory.h @@ -0,0 +1,90 @@ +// Copyright 2017 The Abseil Authors. +// +// 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 +// +// https://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. +// +// ----------------------------------------------------------------------------- +// File: memory.h +// ----------------------------------------------------------------------------- +// +// This header file contains utility functions for managing the creation and +// conversion of smart pointers. This file is an extension to the C++ +// standard <memory> library header file. + +#ifndef CERES_PUBLIC_INTERNAL_MEMORY_H_ +#define CERES_PUBLIC_INTERNAL_MEMORY_H_ + +#include <memory> + +#ifdef CERES_HAVE_EXCEPTIONS +#define CERES_INTERNAL_TRY try +#define CERES_INTERNAL_CATCH_ANY catch (...) +#define CERES_INTERNAL_RETHROW \ + do { \ + throw; \ + } while (false) +#else // CERES_HAVE_EXCEPTIONS +#define CERES_INTERNAL_TRY if (true) +#define CERES_INTERNAL_CATCH_ANY else if (false) +#define CERES_INTERNAL_RETHROW \ + do { \ + } while (false) +#endif // CERES_HAVE_EXCEPTIONS + +namespace ceres { +namespace internal { + +template <typename Allocator, typename Iterator, typename... Args> +void ConstructRange(Allocator& alloc, + Iterator first, + Iterator last, + const Args&... args) { + for (Iterator cur = first; cur != last; ++cur) { + CERES_INTERNAL_TRY { + std::allocator_traits<Allocator>::construct( + alloc, std::addressof(*cur), args...); + } + CERES_INTERNAL_CATCH_ANY { + while (cur != first) { + --cur; + std::allocator_traits<Allocator>::destroy(alloc, std::addressof(*cur)); + } + CERES_INTERNAL_RETHROW; + } + } +} + +template <typename Allocator, typename Iterator, typename InputIterator> +void CopyRange(Allocator& alloc, + Iterator destination, + InputIterator first, + InputIterator last) { + for (Iterator cur = destination; first != last; + static_cast<void>(++cur), static_cast<void>(++first)) { + CERES_INTERNAL_TRY { + std::allocator_traits<Allocator>::construct( + alloc, std::addressof(*cur), *first); + } + CERES_INTERNAL_CATCH_ANY { + while (cur != destination) { + --cur; + std::allocator_traits<Allocator>::destroy(alloc, std::addressof(*cur)); + } + CERES_INTERNAL_RETHROW; + } + } +} + +} // namespace internal +} // namespace ceres + +#endif // CERES_PUBLIC_INTERNAL_MEMORY_H_ |