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
55void  operator delete(void* ptr, std::size_t size,
56                      const std::nothrow_t&) noexcept;                  // replaceable, C++14
57
58void* operator new[](std::size_t size);                                 // replaceable
59void* operator new[](std::size_t size, const std::nothrow_t&) noexcept; // replaceable
60void  operator delete[](void* ptr) noexcept;                            // replaceable
61void  operator delete[](void* ptr, std::size_t size) noexcept;          // replaceable, C++14
62void  operator delete[](void* ptr, const std::nothrow_t&) noexcept;     // replaceable
63void  operator delete[](void* ptr, std::size_t size,
64                        const std::nothrow_t&) noexcept;                // replaceable, C++14
65
66void* operator new  (std::size_t size, void* ptr) noexcept;
67void* operator new[](std::size_t size, void* ptr) noexcept;
68void  operator delete  (void* ptr, void*) noexcept;
69void  operator delete[](void* ptr, void*) noexcept;
70
71*/
72
73#include <__config>
74#include <exception>
75#include <cstddef>
76
77#include <__undef___deallocate>
78
79#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
80#pragma GCC system_header
81#endif
82
83namespace std  // purposefully not using versioning namespace
84{
85
86class _LIBCPP_EXCEPTION_ABI bad_alloc
87    : public exception
88{
89public:
90    bad_alloc() _NOEXCEPT;
91    virtual ~bad_alloc() _NOEXCEPT;
92    virtual const char* what() const _NOEXCEPT;
93};
94
95class _LIBCPP_EXCEPTION_ABI bad_array_new_length
96    : public bad_alloc
97{
98public:
99    bad_array_new_length() _NOEXCEPT;
100    virtual ~bad_array_new_length() _NOEXCEPT;
101    virtual const char* what() const _NOEXCEPT;
102};
103
104#if defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11)
105
106class _LIBCPP_EXCEPTION_ABI bad_array_length
107    : public bad_alloc
108{
109public:
110    bad_array_length() _NOEXCEPT;
111    virtual ~bad_array_length() _NOEXCEPT;
112    virtual const char* what() const _NOEXCEPT;
113};
114
115#define _LIBCPP_BAD_ARRAY_LENGTH_DEFINED
116
117#endif  // defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11)
118
119_LIBCPP_FUNC_VIS void __throw_bad_alloc();  // not in C++ spec
120
121struct _LIBCPP_TYPE_VIS nothrow_t {};
122extern _LIBCPP_FUNC_VIS const nothrow_t nothrow;
123typedef void (*new_handler)();
124_LIBCPP_FUNC_VIS new_handler set_new_handler(new_handler) _NOEXCEPT;
125_LIBCPP_FUNC_VIS new_handler get_new_handler() _NOEXCEPT;
126
127}  // std
128
129#if defined(_WIN32) && !defined(cxx_EXPORTS)
130# define _LIBCPP_NEW_DELETE_VIS _LIBCPP_FUNC_VIS_ONLY
131#else
132# define _LIBCPP_NEW_DELETE_VIS _LIBCPP_FUNC_VIS
133#endif
134
135_LIBCPP_NEW_DELETE_VIS void* operator new(std::size_t __sz)
136#if !__has_feature(cxx_noexcept)
137    throw(std::bad_alloc)
138#endif
139;
140_LIBCPP_NEW_DELETE_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
141_LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p) _NOEXCEPT;
142_LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;
143#if defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER >= 14
144_LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p, std::size_t __sz) _NOEXCEPT;
145_LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p, std::size_t __sz, const std::nothrow_t&) _NOEXCEPT;
146#endif
147
148_LIBCPP_NEW_DELETE_VIS void* operator new[](std::size_t __sz)
149#if !__has_feature(cxx_noexcept)
150    throw(std::bad_alloc)
151#endif
152;
153_LIBCPP_NEW_DELETE_VIS void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
154_LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p) _NOEXCEPT;
155_LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT;
156#if defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER >= 14
157_LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p, std::size_t __sz) _NOEXCEPT;
158_LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p, std::size_t __sz, const std::nothrow_t&) _NOEXCEPT;
159#endif
160
161inline _LIBCPP_INLINE_VISIBILITY void* operator new  (std::size_t, void* __p) _NOEXCEPT {return __p;}
162inline _LIBCPP_INLINE_VISIBILITY void* operator new[](std::size_t, void* __p) _NOEXCEPT {return __p;}
163inline _LIBCPP_INLINE_VISIBILITY void  operator delete  (void*, void*) _NOEXCEPT {}
164inline _LIBCPP_INLINE_VISIBILITY void  operator delete[](void*, void*) _NOEXCEPT {}
165
166_LIBCPP_BEGIN_NAMESPACE_STD
167
168inline _LIBCPP_INLINE_VISIBILITY void *__allocate(size_t __size) {
169#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
170  return ::operator new(__size);
171#else
172  return __builtin_operator_new(__size);
173#endif
174}
175
176inline _LIBCPP_INLINE_VISIBILITY void __deallocate(void *__ptr) {
177#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
178  ::operator delete(__ptr);
179#else
180  __builtin_operator_delete(__ptr);
181#endif
182}
183
184_LIBCPP_END_NAMESPACE_STD
185
186#endif  // _LIBCPP_NEW
187