1// -*- C++ -*- 2//===----------------------------- new ------------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_NEW 12#define _LIBCPP_NEW 13 14/* 15 new synopsis 16 17namespace std 18{ 19 20class bad_alloc 21 : public exception 22{ 23public: 24 bad_alloc() noexcept; 25 bad_alloc(const bad_alloc&) noexcept; 26 bad_alloc& operator=(const bad_alloc&) noexcept; 27 virtual const char* what() const noexcept; 28}; 29 30class bad_array_length : public bad_alloc // FIXME: Not part of C++ 31{ 32public: 33 bad_array_length() noexcept; 34}; 35 36class bad_array_new_length : public bad_alloc // C++14 37{ 38public: 39 bad_array_new_length() noexcept; 40}; 41 42enum class align_val_t : size_t {}; // C++17 43struct nothrow_t {}; 44extern const nothrow_t nothrow; 45typedef void (*new_handler)(); 46new_handler set_new_handler(new_handler new_p) noexcept; 47new_handler get_new_handler() noexcept; 48 49} // std 50 51void* operator new(std::size_t size); // replaceable 52void* operator new(std::size_t size, std::align_val_t alignment); // replaceable, C++17 53void* operator new(std::size_t size, const std::nothrow_t&) noexcept; // replaceable 54void* operator new(std::size_t size, std::align_val_t alignment, 55 const std::nothrow_t&) noexcept; // replaceable, C++17 56void operator delete(void* ptr) noexcept; // replaceable 57void operator delete(void* ptr, std::size_t size) noexcept; // replaceable, C++14 58void operator delete(void* ptr, std::align_val_t alignment) noexcept; // replaceable, C++17 59void operator delete(void* ptr, std::size_t size, 60 std::align_val_t alignment) noexcept; // replaceable, C++17 61void operator delete(void* ptr, const std::nothrow_t&) noexcept; // replaceable 62void operator delete(void* ptr, std:align_val_t alignment, 63 const std::nothrow_t&) noexcept; // replaceable, C++17 64 65void* operator new[](std::size_t size); // replaceable 66void* operator new[](std::size_t size, 67 std::align_val_t alignment) noexcept; // replaceable, C++17 68void* operator new[](std::size_t size, const std::nothrow_t&) noexcept; // replaceable 69void* operator new[](std::size_t size, std::align_val_t alignment, 70 const std::nothrow_t&) noexcept; // replaceable, C++17 71void operator delete[](void* ptr) noexcept; // replaceable 72void operator delete[](void* ptr, std::size_t size) noexcept; // replaceable, C++14 73void operator delete[](void* ptr, 74 std::align_val_t alignment) noexcept; // replaceable, C++17 75void operator delete[](void* ptr, std::size_t size, 76 std::align_val_t alignment) noexcept; // replaceable, C++17 77void operator delete[](void* ptr, const std::nothrow_t&) noexcept; // replaceable 78void operator delete[](void* ptr, std::align_val_t alignment, 79 const std::nothrow_t&) noexcept; // replaceable, C++17 80 81void* operator new (std::size_t size, void* ptr) noexcept; 82void* operator new[](std::size_t size, void* ptr) noexcept; 83void operator delete (void* ptr, void*) noexcept; 84void operator delete[](void* ptr, void*) noexcept; 85 86*/ 87 88#include <__config> 89#include <exception> 90#include <cstddef> 91#ifdef _LIBCPP_NO_EXCEPTIONS 92#include <cstdlib> 93#endif 94 95#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 96#pragma GCC system_header 97#endif 98 99#if !(defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER >= 14 || \ 100 (defined(__cpp_sized_deallocation) && __cpp_sized_deallocation >= 201309)) 101# define _LIBCPP_HAS_NO_SIZED_DEALLOCATION 102#endif 103 104#if !(defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER > 14 || \ 105 (defined(__cpp_aligned_new) && __cpp_aligned_new >= 201606)) 106# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 107#endif 108 109namespace std // purposefully not using versioning namespace 110{ 111 112class _LIBCPP_EXCEPTION_ABI bad_alloc 113 : public exception 114{ 115public: 116 bad_alloc() _NOEXCEPT; 117 virtual ~bad_alloc() _NOEXCEPT; 118 virtual const char* what() const _NOEXCEPT; 119}; 120 121class _LIBCPP_EXCEPTION_ABI bad_array_new_length 122 : public bad_alloc 123{ 124public: 125 bad_array_new_length() _NOEXCEPT; 126 virtual ~bad_array_new_length() _NOEXCEPT; 127 virtual const char* what() const _NOEXCEPT; 128}; 129 130_LIBCPP_NORETURN _LIBCPP_FUNC_VIS void __throw_bad_alloc(); // not in C++ spec 131 132#if defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11) 133 134class _LIBCPP_EXCEPTION_ABI bad_array_length 135 : public bad_alloc 136{ 137public: 138 bad_array_length() _NOEXCEPT; 139 virtual ~bad_array_length() _NOEXCEPT; 140 virtual const char* what() const _NOEXCEPT; 141}; 142 143#define _LIBCPP_BAD_ARRAY_LENGTH_DEFINED 144 145#endif // defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11) 146 147#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 148#ifndef _LIBCPP_CXX03_LANG 149enum class _LIBCPP_ENUM_VIS align_val_t : size_t { }; 150#else 151enum align_val_t { __zero = 0, __max = (size_t)-1 }; 152#endif 153#endif 154 155struct _LIBCPP_TYPE_VIS nothrow_t {}; 156extern _LIBCPP_FUNC_VIS const nothrow_t nothrow; 157typedef void (*new_handler)(); 158_LIBCPP_FUNC_VIS new_handler set_new_handler(new_handler) _NOEXCEPT; 159_LIBCPP_FUNC_VIS new_handler get_new_handler() _NOEXCEPT; 160 161} // std 162 163#if defined(_LIBCPP_CXX03_LANG) 164#define _THROW_BAD_ALLOC throw(std::bad_alloc) 165#else 166#define _THROW_BAD_ALLOC 167#endif 168 169_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz) _THROW_BAD_ALLOC; 170_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS; 171_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p) _NOEXCEPT; 172_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT; 173#ifndef _LIBCPP_HAS_NO_SIZED_DEALLOCATION 174_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, std::size_t __sz) _NOEXCEPT; 175#endif 176 177_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz) _THROW_BAD_ALLOC; 178_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS; 179_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p) _NOEXCEPT; 180_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT; 181#ifndef _LIBCPP_HAS_NO_SIZED_DEALLOCATION 182_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, std::size_t __sz) _NOEXCEPT; 183#endif 184 185#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 186_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, std::align_val_t) _THROW_BAD_ALLOC; 187_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, std::align_val_t, const std::nothrow_t&) _NOEXCEPT _NOALIAS; 188_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, std::align_val_t) _NOEXCEPT; 189_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT; 190#ifndef _LIBCPP_HAS_NO_SIZED_DEALLOCATION 191_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, std::size_t __sz, std::align_val_t) _NOEXCEPT; 192#endif 193 194_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, std::align_val_t) _THROW_BAD_ALLOC; 195_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, std::align_val_t, const std::nothrow_t&) _NOEXCEPT _NOALIAS; 196_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, std::align_val_t) _NOEXCEPT; 197_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT; 198#ifndef _LIBCPP_HAS_NO_SIZED_DEALLOCATION 199_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, std::size_t __sz, std::align_val_t) _NOEXCEPT; 200#endif 201#endif 202 203inline _LIBCPP_INLINE_VISIBILITY void* operator new (std::size_t, void* __p) _NOEXCEPT {return __p;} 204inline _LIBCPP_INLINE_VISIBILITY void* operator new[](std::size_t, void* __p) _NOEXCEPT {return __p;} 205inline _LIBCPP_INLINE_VISIBILITY void operator delete (void*, void*) _NOEXCEPT {} 206inline _LIBCPP_INLINE_VISIBILITY void operator delete[](void*, void*) _NOEXCEPT {} 207 208_LIBCPP_BEGIN_NAMESPACE_STD 209 210inline _LIBCPP_INLINE_VISIBILITY void *__allocate(size_t __size) { 211#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 212 return ::operator new(__size); 213#else 214 return __builtin_operator_new(__size); 215#endif 216} 217 218inline _LIBCPP_INLINE_VISIBILITY void __libcpp_deallocate(void *__ptr) { 219#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 220 ::operator delete(__ptr); 221#else 222 __builtin_operator_delete(__ptr); 223#endif 224} 225 226#ifdef _LIBCPP_BAD_ARRAY_LENGTH_DEFINED 227_LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE 228void __throw_bad_array_length() 229{ 230#ifndef _LIBCPP_NO_EXCEPTIONS 231 throw bad_array_length(); 232#else 233 _VSTD::abort(); 234#endif 235} 236#endif 237 238_LIBCPP_END_NAMESPACE_STD 239 240#endif // _LIBCPP_NEW 241