new revision 262801 
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, const std::nothrow_t&) noexcept;       // replaceable
54
55void* operator new[](std::size_t size);                                 // replaceable
56void* operator new[](std::size_t size, const std::nothrow_t&) noexcept; // replaceable
57void  operator delete[](void* ptr) noexcept;                            // replaceable
58void  operator delete[](void* ptr, const std::nothrow_t&) noexcept;     // replaceable
59
60void* operator new  (std::size_t size, void* ptr) noexcept;
61void* operator new[](std::size_t size, void* ptr) noexcept;
62void  operator delete  (void* ptr, void*) noexcept;
63void  operator delete[](void* ptr, void*) noexcept;
64
65*/
66
67#include <__config>
68#include <exception>
69#include <cstddef>
70
71#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
72#pragma GCC system_header
73#endif
74
75namespace std  // purposefully not using versioning namespace
76{
77
78class _LIBCPP_EXCEPTION_ABI bad_alloc
79    : public exception
80{
81public:
82    bad_alloc() _NOEXCEPT;
83    virtual ~bad_alloc() _NOEXCEPT;
84    virtual const char* what() const _NOEXCEPT;
85};
86
87class _LIBCPP_EXCEPTION_ABI bad_array_new_length
88    : public bad_alloc
89{
90public:
91    bad_array_new_length() _NOEXCEPT;
92    virtual ~bad_array_new_length() _NOEXCEPT;
93    virtual const char* what() const _NOEXCEPT;
94};
95
96#if defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11)
97
98class _LIBCPP_EXCEPTION_ABI bad_array_length
99    : public bad_alloc
100{
101public:
102    bad_array_length() _NOEXCEPT;
103    virtual ~bad_array_length() _NOEXCEPT;
104    virtual const char* what() const _NOEXCEPT;
105};
106
107#define _LIBCPP_BAD_ARRAY_LENGTH_DEFINED
108
109#endif  // defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11)
110
111_LIBCPP_FUNC_VIS void __throw_bad_alloc();  // not in C++ spec
112
113struct _LIBCPP_TYPE_VIS nothrow_t {};
114extern _LIBCPP_FUNC_VIS const nothrow_t nothrow;
115typedef void (*new_handler)();
116_LIBCPP_FUNC_VIS new_handler set_new_handler(new_handler) _NOEXCEPT;
117_LIBCPP_FUNC_VIS new_handler get_new_handler() _NOEXCEPT;
118
119}  // std
120
121#if defined(_WIN32) && !defined(cxx_EXPORTS)
122# define _LIBCPP_NEW_DELETE_VIS _LIBCPP_FUNC_VIS_ONLY
123#else
124# define _LIBCPP_NEW_DELETE_VIS _LIBCPP_FUNC_VIS
125#endif
126
127_LIBCPP_NEW_DELETE_VIS void* operator new(std::size_t __sz)
128#if !__has_feature(cxx_noexcept)
129    throw(std::bad_alloc)
130#endif
131;
132_LIBCPP_NEW_DELETE_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
133_LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p) _NOEXCEPT;
134_LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;
135
136_LIBCPP_NEW_DELETE_VIS void* operator new[](std::size_t __sz)
137#if !__has_feature(cxx_noexcept)
138    throw(std::bad_alloc)
139#endif
140;
141_LIBCPP_NEW_DELETE_VIS void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
142_LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p) _NOEXCEPT;
143_LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT;
144
145inline _LIBCPP_INLINE_VISIBILITY void* operator new  (std::size_t, void* __p) _NOEXCEPT {return __p;}
146inline _LIBCPP_INLINE_VISIBILITY void* operator new[](std::size_t, void* __p) _NOEXCEPT {return __p;}
147inline _LIBCPP_INLINE_VISIBILITY void  operator delete  (void*, void*) _NOEXCEPT {}
148inline _LIBCPP_INLINE_VISIBILITY void  operator delete[](void*, void*) _NOEXCEPT {}
149
150#endif  // _LIBCPP_NEW
151