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- //////////////////////////////////////////////////////////////////////////////
- //
- // (C) Copyright Ion Gaztanaga 2025-2025. Distributed under the Boost
- // Software License, Version 1.0. (See accompanying file
- // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- //
- // See http://www.boost.org/libs/container for documentation.
- //
- //////////////////////////////////////////////////////////////////////////////
- #ifndef BOOST_CONTAINER_DETAIL_OPERATOR_NEW_HELPERS_HPP
- #define BOOST_CONTAINER_DETAIL_OPERATOR_NEW_HELPERS_HPP
- #ifndef BOOST_CONFIG_HPP
- # include <boost/config.hpp>
- #endif
- #if defined(BOOST_HAS_PRAGMA_ONCE)
- # pragma once
- #endif
- #include <boost/container/detail/std_fwd.hpp>
- #include <boost/container/throw_exception.hpp>
- namespace boost {
- namespace container {
- namespace dtl {
- template <class T>
- T* operator_new_allocate(std::size_t count)
- {
- const std::size_t max_count = std::size_t(-1)/(2*sizeof(T));
- if(BOOST_UNLIKELY(count > max_count))
- throw_bad_alloc();
- #if defined(__cpp_aligned_new)
- BOOST_IF_CONSTEXPR(__STDCPP_DEFAULT_NEW_ALIGNMENT__ < alignof(T)) {
- return static_cast<T*>(::operator new(count*sizeof(T), std::align_val_t(alignof(T))));
- }
- #endif
- return static_cast<T*>(::operator new(count*sizeof(T)));
- }
- template <class T>
- void operator_delete_deallocate(T* ptr, std::size_t n) BOOST_NOEXCEPT_OR_NOTHROW
- {
- (void)n;
- #ifdef __cpp_aligned_new
- BOOST_IF_CONSTEXPR(__STDCPP_DEFAULT_NEW_ALIGNMENT__ < alignof(T)) {
- # if defined(__cpp_sized_deallocation)
- ::operator delete((void*)ptr, n * sizeof(T), std::align_val_t(alignof(T)));
- #else
- ::operator delete((void*)ptr, std::align_val_t(alignof(T)));
- # endif
- return;
- }
- #endif
- # if defined(__cpp_sized_deallocation)
- ::operator delete((void*)ptr, n * sizeof(T));
- #else
- ::operator delete((void*)ptr);
- # endif
- }
- } //namespace dtl {
- } //namespace container {
- } //namespace boost {
- #endif //#ifndef BOOST_CONTAINER_DETAIL_OPERATOR_NEW_HELPERS_HPP
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