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_ABI_MICROSOFT) 96#include <new.h> 97#endif 98 99#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 100#pragma GCC system_header 101#endif 102 103#if !(defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER >= 14 || \ 104 (defined(__cpp_sized_deallocation) && __cpp_sized_deallocation >= 201309)) 105# define _LIBCPP_HAS_NO_SIZED_DEALLOCATION 106#endif 107 108#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) && \ 109 (!(defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER > 14 || \ 110 (defined(__cpp_aligned_new) && __cpp_aligned_new >= 201606))) 111# define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 112#endif 113 114namespace std // purposefully not using versioning namespace 115{ 116 117#if !defined(_LIBCPP_ABI_MICROSOFT) 118struct _LIBCPP_TYPE_VIS nothrow_t {}; 119extern _LIBCPP_FUNC_VIS const nothrow_t nothrow; 120 121class _LIBCPP_EXCEPTION_ABI bad_alloc 122 : public exception 123{ 124public: 125 bad_alloc() _NOEXCEPT; 126 virtual ~bad_alloc() _NOEXCEPT; 127 virtual const char* what() const _NOEXCEPT; 128}; 129 130class _LIBCPP_EXCEPTION_ABI bad_array_new_length 131 : public bad_alloc 132{ 133public: 134 bad_array_new_length() _NOEXCEPT; 135 virtual ~bad_array_new_length() _NOEXCEPT; 136 virtual const char* what() const _NOEXCEPT; 137}; 138 139typedef void (*new_handler)(); 140_LIBCPP_FUNC_VIS new_handler set_new_handler(new_handler) _NOEXCEPT; 141_LIBCPP_FUNC_VIS new_handler get_new_handler() _NOEXCEPT; 142 143#endif // !_LIBCPP_ABI_MICROSOFT 144 145_LIBCPP_NORETURN _LIBCPP_FUNC_VIS void __throw_bad_alloc(); // not in C++ spec 146 147#if defined(_LIBCPP_BUILDING_LIBRARY) || (_LIBCPP_STD_VER > 11) 148 149class _LIBCPP_EXCEPTION_ABI bad_array_length 150 : public bad_alloc 151{ 152public: 153 bad_array_length() _NOEXCEPT; 154 virtual ~bad_array_length() _NOEXCEPT; 155 virtual const char* what() const _NOEXCEPT; 156}; 157 158#define _LIBCPP_BAD_ARRAY_LENGTH_DEFINED 159 160#endif // defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11) 161 162#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) || _LIBCPP_STD_VER > 14 163#ifndef _LIBCPP_CXX03_LANG 164enum class _LIBCPP_ENUM_VIS align_val_t : size_t { }; 165#else 166enum align_val_t { __zero = 0, __max = (size_t)-1 }; 167#endif 168#endif 169 170} // std 171 172#if defined(_LIBCPP_CXX03_LANG) 173#define _THROW_BAD_ALLOC throw(std::bad_alloc) 174#else 175#define _THROW_BAD_ALLOC 176#endif 177 178#if !defined(_LIBCPP_ABI_MICROSOFT) 179 180_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz) _THROW_BAD_ALLOC; 181_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS; 182_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p) _NOEXCEPT; 183_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT; 184#ifndef _LIBCPP_HAS_NO_SIZED_DEALLOCATION 185_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, std::size_t __sz) _NOEXCEPT; 186#endif 187 188_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz) _THROW_BAD_ALLOC; 189_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS; 190_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p) _NOEXCEPT; 191_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT; 192#ifndef _LIBCPP_HAS_NO_SIZED_DEALLOCATION 193_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, std::size_t __sz) _NOEXCEPT; 194#endif 195 196#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 197_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, std::align_val_t) _THROW_BAD_ALLOC; 198_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, std::align_val_t, const std::nothrow_t&) _NOEXCEPT _NOALIAS; 199_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, std::align_val_t) _NOEXCEPT; 200_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT; 201#ifndef _LIBCPP_HAS_NO_SIZED_DEALLOCATION 202_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, std::size_t __sz, std::align_val_t) _NOEXCEPT; 203#endif 204 205_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, std::align_val_t) _THROW_BAD_ALLOC; 206_LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, std::align_val_t, const std::nothrow_t&) _NOEXCEPT _NOALIAS; 207_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, std::align_val_t) _NOEXCEPT; 208_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT; 209#ifndef _LIBCPP_HAS_NO_SIZED_DEALLOCATION 210_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, std::size_t __sz, std::align_val_t) _NOEXCEPT; 211#endif 212#endif 213 214inline _LIBCPP_INLINE_VISIBILITY void* operator new (std::size_t, void* __p) _NOEXCEPT {return __p;} 215inline _LIBCPP_INLINE_VISIBILITY void* operator new[](std::size_t, void* __p) _NOEXCEPT {return __p;} 216inline _LIBCPP_INLINE_VISIBILITY void operator delete (void*, void*) _NOEXCEPT {} 217inline _LIBCPP_INLINE_VISIBILITY void operator delete[](void*, void*) _NOEXCEPT {} 218 219#endif // !_LIBCPP_ABI_MICROSOFT 220 221_LIBCPP_BEGIN_NAMESPACE_STD 222 223inline _LIBCPP_INLINE_VISIBILITY void *__allocate(size_t __size) { 224#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 225 return ::operator new(__size); 226#else 227 return __builtin_operator_new(__size); 228#endif 229} 230 231inline _LIBCPP_INLINE_VISIBILITY void __libcpp_deallocate(void *__ptr) { 232#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 233 ::operator delete(__ptr); 234#else 235 __builtin_operator_delete(__ptr); 236#endif 237} 238 239#ifdef _LIBCPP_BAD_ARRAY_LENGTH_DEFINED 240_LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE 241void __throw_bad_array_length() 242{ 243#ifndef _LIBCPP_NO_EXCEPTIONS 244 throw bad_array_length(); 245#else 246 _VSTD::abort(); 247#endif 248} 249#endif 250 251_LIBCPP_END_NAMESPACE_STD 252 253#endif // _LIBCPP_NEW 254