diff options
Diffstat (limited to 'include/new')
| -rw-r--r-- | include/new | 53 |
1 files changed, 48 insertions, 5 deletions
diff --git a/include/new b/include/new index 4e527501b1e2..b5dc05542b59 100644 --- a/include/new +++ b/include/new @@ -89,6 +89,7 @@ void operator delete[](void* ptr, void*) noexcept; #include <__config> #include <exception> +#include <type_traits> #include <cstddef> #ifdef _LIBCPP_NO_EXCEPTIONS #include <cstdlib> @@ -113,6 +114,14 @@ void operator delete[](void* ptr, void*) noexcept; # define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION #endif + +#if !__has_builtin(__builtin_operator_new) || \ + __has_builtin(__builtin_operator_new) < 201802L || \ + defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) || \ + !defined(__cpp_aligned_new) || __cpp_aligned_new < 201606 +#define _LIBCPP_HAS_NO_BUILTIN_ALIGNED_OPERATOR_NEW_DELETE +#endif + namespace std // purposefully not using versioning namespace { @@ -160,6 +169,7 @@ public: #endif // defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11) +#if !defined(_LIBCPP_ABI_MICROSOFT) || defined(_LIBCPP_NO_VCRUNTIME) #if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) || _LIBCPP_STD_VER > 14 #ifndef _LIBCPP_CXX03_LANG enum class _LIBCPP_ENUM_VIS align_val_t : size_t { }; @@ -167,6 +177,7 @@ enum class _LIBCPP_ENUM_VIS align_val_t : size_t { }; enum align_val_t { __zero = 0, __max = (size_t)-1 }; #endif #endif +#endif } // std @@ -221,7 +232,27 @@ inline _LIBCPP_INLINE_VISIBILITY void operator delete[](void*, void*) _NOEXCEPT _LIBCPP_BEGIN_NAMESPACE_STD -inline _LIBCPP_INLINE_VISIBILITY void *__allocate(size_t __size) { +_LIBCPP_CONSTEXPR inline _LIBCPP_INLINE_VISIBILITY bool __is_overaligned_for_new(size_t __align) _NOEXCEPT { +#ifdef __STDCPP_DEFAULT_NEW_ALIGNMENT__ + return __align > __STDCPP_DEFAULT_NEW_ALIGNMENT__; +#else + return __align > alignment_of<max_align_t>::value; +#endif +} + +inline _LIBCPP_INLINE_VISIBILITY void *__libcpp_allocate(size_t __size, size_t __align) { +#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION + if (__is_overaligned_for_new(__align)) { + const align_val_t __align_val = static_cast<align_val_t>(__align); +# ifdef _LIBCPP_HAS_NO_BUILTIN_ALIGNED_OPERATOR_NEW_DELETE + return ::operator new(__size, __align_val); +# else + return __builtin_operator_new(__size, __align_val); +# endif + } +#else + ((void)__align); +#endif #ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE return ::operator new(__size); #else @@ -229,16 +260,28 @@ inline _LIBCPP_INLINE_VISIBILITY void *__allocate(size_t __size) { #endif } -inline _LIBCPP_INLINE_VISIBILITY void __libcpp_deallocate(void *__ptr) { +inline _LIBCPP_INLINE_VISIBILITY void __libcpp_deallocate(void* __ptr, size_t __align) { +#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION + if (__is_overaligned_for_new(__align)) { + const align_val_t __align_val = static_cast<align_val_t>(__align); +# ifdef _LIBCPP_HAS_NO_BUILTIN_ALIGNED_OPERATOR_NEW_DELETE + return ::operator delete(__ptr, __align_val); +# else + return __builtin_operator_delete(__ptr, __align_val); +# endif + } +#else + ((void)__align); +#endif #ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE - ::operator delete(__ptr); + return ::operator delete(__ptr); #else - __builtin_operator_delete(__ptr); + return __builtin_operator_delete(__ptr); #endif } #ifdef _LIBCPP_BAD_ARRAY_LENGTH_DEFINED -_LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE +_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY #ifndef _LIBCPP_NO_EXCEPTIONS _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH #endif |