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 // C++14
31{
32public:
33 bad_array_length() noexcept;
34};
35
36class bad_array_new_length : public bad_alloc
37{
38public:
39 bad_array_new_length() noexcept;
40};
41
42struct nothrow_t {};
43extern const nothrow_t nothrow;
44typedef void (*new_handler)();
45new_handler set_new_handler(new_handler new_p) noexcept;
46new_handler get_new_handler() noexcept;
47
48} // std
49
50void* operator new(std::size_t size); // replaceable
51void* operator new(std::size_t size, const std::nothrow_t&) noexcept; // replaceable
52void operator delete(void* ptr) noexcept; // replaceable
53void operator delete(void* ptr, std::size_t size) noexcept; // replaceable, C++14
54void operator delete(void* ptr, const std::nothrow_t&) noexcept; // replaceable
55
56void* operator new[](std::size_t size); // replaceable
57void* operator new[](std::size_t size, const std::nothrow_t&) noexcept; // replaceable
58void operator delete[](void* ptr) noexcept; // replaceable
59void operator delete[](void* ptr, std::size_t size) noexcept; // replaceable, C++14
60void operator delete[](void* ptr, const std::nothrow_t&) noexcept; // replaceable
61
62void* operator new (std::size_t size, void* ptr) noexcept;
63void* operator new[](std::size_t size, void* ptr) noexcept;
64void operator delete (void* ptr, void*) noexcept;
65void operator delete[](void* ptr, void*) noexcept;
66
67*/
68
69#include <__config>
70#include <exception>
71#include <cstddef>
72
73#include <__undef___deallocate>
74
75#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
76#pragma GCC system_header
77#endif
78
79namespace std // purposefully not using versioning namespace
80{
81
82class _LIBCPP_EXCEPTION_ABI bad_alloc
83 : public exception
84{
85public:
86 bad_alloc() _NOEXCEPT;
87 virtual ~bad_alloc() _NOEXCEPT;
88 virtual const char* what() const _NOEXCEPT;
89};
90
91class _LIBCPP_EXCEPTION_ABI bad_array_new_length
92 : public bad_alloc
93{
94public:
95 bad_array_new_length() _NOEXCEPT;
96 virtual ~bad_array_new_length() _NOEXCEPT;
97 virtual const char* what() const _NOEXCEPT;
98};
99
100#if defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11)
101
102class _LIBCPP_EXCEPTION_ABI bad_array_length
103 : public bad_alloc
104{
105public:
106 bad_array_length() _NOEXCEPT;
107 virtual ~bad_array_length() _NOEXCEPT;
108 virtual const char* what() const _NOEXCEPT;
109};
110
111#define _LIBCPP_BAD_ARRAY_LENGTH_DEFINED
112
113#endif // defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11)
114
115_LIBCPP_FUNC_VIS void __throw_bad_alloc(); // not in C++ spec
116
117struct _LIBCPP_TYPE_VIS nothrow_t {};
118extern _LIBCPP_FUNC_VIS const nothrow_t nothrow;
119typedef void (*new_handler)();
120_LIBCPP_FUNC_VIS new_handler set_new_handler(new_handler) _NOEXCEPT;
121_LIBCPP_FUNC_VIS new_handler get_new_handler() _NOEXCEPT;
122
123} // std
124
125#if defined(_WIN32) && !defined(cxx_EXPORTS)
126# define _LIBCPP_NEW_DELETE_VIS _LIBCPP_FUNC_VIS_ONLY
127#else
128# define _LIBCPP_NEW_DELETE_VIS _LIBCPP_FUNC_VIS
129#endif
130
131_LIBCPP_NEW_DELETE_VIS void* operator new(std::size_t __sz)
132#if !__has_feature(cxx_noexcept)
133 throw(std::bad_alloc)
134#endif
135;
136_LIBCPP_NEW_DELETE_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
137_LIBCPP_NEW_DELETE_VIS void operator delete(void* __p) _NOEXCEPT;
138_LIBCPP_NEW_DELETE_VIS void operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;
139#if defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER >= 14 || \
140 (defined(__cpp_sized_deallocation) && __cpp_sized_deallocation >= 201309)
141_LIBCPP_NEW_DELETE_VIS void operator delete(void* __p, std::size_t __sz) _NOEXCEPT;
142#endif
143
144_LIBCPP_NEW_DELETE_VIS void* operator new[](std::size_t __sz)
145#if !__has_feature(cxx_noexcept)
146 throw(std::bad_alloc)
147#endif
148;
149_LIBCPP_NEW_DELETE_VIS void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
150_LIBCPP_NEW_DELETE_VIS void operator delete[](void* __p) _NOEXCEPT;
151_LIBCPP_NEW_DELETE_VIS void operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT;
152#if defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER >= 14 || \
153 (defined(__cpp_sized_deallocation) && __cpp_sized_deallocation >= 201309)
154_LIBCPP_NEW_DELETE_VIS void operator delete[](void* __p, std::size_t __sz) _NOEXCEPT;
155#endif
156
157inline _LIBCPP_INLINE_VISIBILITY void* operator new (std::size_t, void* __p) _NOEXCEPT {return __p;}
158inline _LIBCPP_INLINE_VISIBILITY void* operator new[](std::size_t, void* __p) _NOEXCEPT {return __p;}
159inline _LIBCPP_INLINE_VISIBILITY void operator delete (void*, void*) _NOEXCEPT {}
160inline _LIBCPP_INLINE_VISIBILITY void operator delete[](void*, void*) _NOEXCEPT {}
161
162_LIBCPP_BEGIN_NAMESPACE_STD
163
164inline _LIBCPP_INLINE_VISIBILITY void *__allocate(size_t __size) {
165#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
166 return ::operator new(__size);
167#else
168 return __builtin_operator_new(__size);
169#endif
170}
171
172inline _LIBCPP_INLINE_VISIBILITY void __deallocate(void *__ptr) {
173#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
174 ::operator delete(__ptr);
175#else
176 __builtin_operator_delete(__ptr);
177#endif
178}
179
180_LIBCPP_END_NAMESPACE_STD
181
182#endif // _LIBCPP_NEW
183