xref: /llvm-project-15.0.7/libcxx/include/new (revision a462f5cc)
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() throw();
25    bad_alloc(const bad_alloc&) throw();
26    bad_alloc& operator=(const bad_alloc&) throw();
27    virtual ~bad_alloc() throw();
28    virtual const char* what() const throw();
29};
30
31struct nothrow_t {};
32extern const nothrow_t nothrow;
33typedef void (*new_handler)();
34new_handler set_new_handler(new_handler new_p) throw();
35new_handler get_new_handler() throw();
36
37}  // std
38
39void* operator new(std::size_t size) throw(std::bad_alloc);            // replaceable
40void* operator new(std::size_t size, const std::nothrow_t&) throw();   // replaceable
41void  operator delete(void* ptr) throw();                              // replaceable
42void  operator delete(void* ptr, const std::nothrow_t&) throw();       // replaceable
43
44void* operator new[](std::size_t size) throw(std::bad_alloc);          // replaceable
45void* operator new[](std::size_t size, const std::nothrow_t&) throw(); // replaceable
46void  operator delete[](void* ptr) throw();                            // replaceable
47void  operator delete[](void* ptr, const std::nothrow_t&) throw();     // replaceable
48
49void* operator new  (std::size_t size, void* ptr) throw();
50void* operator new[](std::size_t size, void* ptr) throw();
51void  operator delete  (void* ptr, void*) throw();
52void  operator delete[](void* ptr, void*) throw();
53
54*/
55
56#include <__config>
57#include <exception>
58#include <cstddef>
59
60#pragma GCC system_header
61
62namespace std  // purposefully not using versioning namespace
63{
64
65class _LIBCPP_EXCEPTION_ABI bad_alloc
66    : public exception
67{
68public:
69    bad_alloc() throw();
70    virtual ~bad_alloc() throw();
71    virtual const char* what() const throw();
72};
73
74class _LIBCPP_EXCEPTION_ABI bad_array_new_length
75    : public bad_alloc
76{
77public:
78    bad_array_new_length() throw();
79    virtual ~bad_array_new_length() throw();
80    virtual const char* what() const throw();
81};
82
83void __throw_bad_alloc();  // not in C++ spec
84
85struct _LIBCPP_VISIBLE nothrow_t {};
86extern _LIBCPP_VISIBLE const nothrow_t nothrow;
87typedef void (*new_handler)();
88_LIBCPP_VISIBLE new_handler set_new_handler(new_handler) throw();
89_LIBCPP_VISIBLE new_handler get_new_handler() throw();
90
91}  // std
92
93_LIBCPP_VISIBLE void* operator new(std::size_t) throw(std::bad_alloc);
94_LIBCPP_VISIBLE void* operator new(std::size_t, const std::nothrow_t&) throw();
95_LIBCPP_VISIBLE void  operator delete(void*) throw();
96_LIBCPP_VISIBLE void  operator delete(void*, const std::nothrow_t&) throw();
97
98_LIBCPP_VISIBLE void* operator new[](std::size_t) throw(std::bad_alloc);
99_LIBCPP_VISIBLE void* operator new[](std::size_t, const std::nothrow_t&) throw();
100_LIBCPP_VISIBLE void  operator delete[](void*) throw();
101_LIBCPP_VISIBLE void  operator delete[](void*, const std::nothrow_t&) throw();
102
103_LIBCPP_INLINE_VISIBILITY inline void* operator new  (std::size_t, void* __p) throw() {return __p;}
104_LIBCPP_INLINE_VISIBILITY inline void* operator new[](std::size_t, void* __p) throw() {return __p;}
105_LIBCPP_INLINE_VISIBILITY inline void  operator delete  (void*, void*) throw() {}
106_LIBCPP_INLINE_VISIBILITY inline void  operator delete[](void*, void*) throw() {}
107
108#endif  // _LIBCPP_NEW
109