new revision 321222 
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
78#pragma GCC system_header
79#endif
80
81namespace std  // purposefully not using versioning namespace
82{
83
84class _LIBCPP_EXCEPTION_ABI bad_alloc
85    : public exception
86{
87public:
88    bad_alloc() _NOEXCEPT;
89    virtual ~bad_alloc() _NOEXCEPT;
90    virtual const char* what() const _NOEXCEPT;
91};
92
93class _LIBCPP_EXCEPTION_ABI bad_array_new_length
94    : public bad_alloc
95{
96public:
97    bad_array_new_length() _NOEXCEPT;
98    virtual ~bad_array_new_length() _NOEXCEPT;
99    virtual const char* what() const _NOEXCEPT;
100};
101
102#if defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11)
103
104class _LIBCPP_EXCEPTION_ABI bad_array_length
105    : public bad_alloc
106{
107public:
108    bad_array_length() _NOEXCEPT;
109    virtual ~bad_array_length() _NOEXCEPT;
110    virtual const char* what() const _NOEXCEPT;
111};
112
113#define _LIBCPP_BAD_ARRAY_LENGTH_DEFINED
114
115#endif  // defined(_LIBCPP_BUILDING_NEW) || (_LIBCPP_STD_VER > 11)
116
117_LIBCPP_FUNC_VIS void __throw_bad_alloc();  // not in C++ spec
118
119struct _LIBCPP_TYPE_VIS nothrow_t {};
120extern _LIBCPP_FUNC_VIS const nothrow_t nothrow;
121typedef void (*new_handler)();
122_LIBCPP_FUNC_VIS new_handler set_new_handler(new_handler) _NOEXCEPT;
123_LIBCPP_FUNC_VIS new_handler get_new_handler() _NOEXCEPT;
124
125}  // std
126
127#if defined(_WIN32) && !defined(cxx_EXPORTS)
128# define _LIBCPP_NEW_DELETE_VIS _LIBCPP_FUNC_VIS_ONLY
129#else
130# define _LIBCPP_NEW_DELETE_VIS _LIBCPP_FUNC_VIS
131#endif
132
133_LIBCPP_NEW_DELETE_VIS void* operator new(std::size_t __sz)
134#if !__has_feature(cxx_noexcept)
135    throw(std::bad_alloc)
136#endif
137;
138_LIBCPP_NEW_DELETE_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
139_LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p) _NOEXCEPT;
140_LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p, std::size_t __sz) _NOEXCEPT;
141_LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;
142_LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p, std::size_t __sz, const std::nothrow_t&) _NOEXCEPT;
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, std::size_t __sz) _NOEXCEPT;
152_LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT;
153_LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p, std::size_t __sz, const std::nothrow_t&) _NOEXCEPT;
154
155inline _LIBCPP_INLINE_VISIBILITY void* operator new  (std::size_t, void* __p) _NOEXCEPT {return __p;}
156inline _LIBCPP_INLINE_VISIBILITY void* operator new[](std::size_t, void* __p) _NOEXCEPT {return __p;}
157inline _LIBCPP_INLINE_VISIBILITY void  operator delete  (void*, void*) _NOEXCEPT {}
158inline _LIBCPP_INLINE_VISIBILITY void  operator delete[](void*, void*) _NOEXCEPT {}
159
160_LIBCPP_BEGIN_NAMESPACE_STD
161
162inline _LIBCPP_INLINE_VISIBILITY void *__allocate(size_t __size) {
163#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
164  return ::operator new(__size);
165#else
166  return __builtin_operator_new(__size);
167#endif
168}
169
170inline _LIBCPP_INLINE_VISIBILITY void __deallocate(void *__ptr) {
171#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
172  ::operator delete(__ptr);
173#else
174  __builtin_operator_delete(__ptr);
175#endif
176}
177
178_LIBCPP_END_NAMESPACE_STD
179
180#endif  // _LIBCPP_NEW
181