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Diffstat (limited to 'third_party/immer/immer/heap/debug_size_heap.hpp')
-rw-r--r-- | third_party/immer/immer/heap/debug_size_heap.hpp | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/third_party/immer/immer/heap/debug_size_heap.hpp b/third_party/immer/immer/heap/debug_size_heap.hpp deleted file mode 100644 index d5288c646f8d..000000000000 --- a/third_party/immer/immer/heap/debug_size_heap.hpp +++ /dev/null @@ -1,69 +0,0 @@ -// -// immer: immutable data structures for C++ -// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente -// -// This software is distributed under the Boost Software License, Version 1.0. -// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt -// - -#pragma once - -#include <immer/config.hpp> -#include <immer/heap/identity_heap.hpp> - -#include <cassert> -#include <cstddef> -#include <type_traits> -#include <memory> - -namespace immer { - -#if IMMER_ENABLE_DEBUG_SIZE_HEAP - -/*! - * A heap that in debug mode ensures that the sizes for allocation and - * deallocation do match. - */ -template <typename Base> -struct debug_size_heap -{ -#if defined(__MINGW32__) && !defined(__MINGW64__) - // There is a bug in MinGW 32bit: - // https://sourceforge.net/p/mingw-w64/bugs/778/ It causes different - // versions of std::max_align_t to be defined, depending on inclusion order - // of stddef.h and stdint.h. As we have no control over the inclusion order - // here (as it might be set in stone by the outside world), we can't easily - // pin it to one of both versions of std::max_align_t. This means, we have - // to hardcode extra_size for MinGW 32bit builds until the mentioned bug is - // fixed. - constexpr static auto extra_size = 8; -#else - constexpr static auto extra_size = sizeof( - std::aligned_storage_t<sizeof(std::size_t), alignof(std::max_align_t)>); -#endif - - template <typename... Tags> - static void* allocate(std::size_t size, Tags... tags) - { - auto p = (std::size_t*) Base::allocate(size + extra_size, tags...); - new (p) std::size_t{size}; - return ((char*) p) + extra_size; - } - - template <typename... Tags> - static void deallocate(std::size_t size, void* data, Tags... tags) - { - auto p = (std::size_t*) (((char*) data) - extra_size); - assert(*p == size); - Base::deallocate(size + extra_size, p, tags...); - } -}; - -#else // IMMER_ENABLE_DEBUG_SIZE_HEAP - -template <typename Base> -using debug_size_heap = identity_heap<Base>; - -#endif // !IMMER_ENABLE_DEBUG_SIZE_HEAP - -} // namespace immer |