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