__debug revision 360784 
1// -*- C++ -*-
2//===--------------------------- __debug ----------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP_DEBUG_H
11#define _LIBCPP_DEBUG_H
12
13#include <__config>
14#include <iosfwd>
15
16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17#pragma GCC system_header
18#endif
19
20#if defined(_LIBCPP_HAS_NO_NULLPTR)
21# include <cstddef>
22#endif
23
24#if _LIBCPP_DEBUG_LEVEL >= 1 || defined(_LIBCPP_BUILDING_LIBRARY)
25#   include <cstdlib>
26#   include <cstdio>
27#   include <cstddef>
28#endif
29
30#if _LIBCPP_DEBUG_LEVEL >= 1 && !defined(_LIBCPP_ASSERT)
31# define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : \
32  _VSTD::__libcpp_debug_function(_VSTD::__libcpp_debug_info(__FILE__, __LINE__, #x, m)))
33#endif
34
35#if _LIBCPP_DEBUG_LEVEL >= 2
36#ifndef _LIBCPP_DEBUG_ASSERT
37#define _LIBCPP_DEBUG_ASSERT(x, m) _LIBCPP_ASSERT(x, m)
38#endif
39#define _LIBCPP_DEBUG_MODE(...) __VA_ARGS__
40#endif
41
42#ifndef _LIBCPP_ASSERT
43#   define _LIBCPP_ASSERT(x, m) ((void)0)
44#endif
45#ifndef _LIBCPP_DEBUG_ASSERT
46#   define _LIBCPP_DEBUG_ASSERT(x, m) ((void)0)
47#endif
48#ifndef _LIBCPP_DEBUG_MODE
49#define _LIBCPP_DEBUG_MODE(...) ((void)0)
50#endif
51
52_LIBCPP_BEGIN_NAMESPACE_STD
53
54struct _LIBCPP_TEMPLATE_VIS __libcpp_debug_info {
55  _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
56  __libcpp_debug_info()
57      : __file_(nullptr), __line_(-1), __pred_(nullptr), __msg_(nullptr) {}
58  _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
59  __libcpp_debug_info(const char* __f, int __l, const char* __p, const char* __m)
60    : __file_(__f), __line_(__l), __pred_(__p), __msg_(__m) {}
61
62  _LIBCPP_FUNC_VIS std::string what() const;
63
64  const char* __file_;
65  int __line_;
66  const char* __pred_;
67  const char* __msg_;
68};
69
70/// __libcpp_debug_function_type - The type of the assertion failure handler.
71typedef void(*__libcpp_debug_function_type)(__libcpp_debug_info const&);
72
73/// __libcpp_debug_function - The handler function called when a _LIBCPP_ASSERT
74///    fails.
75extern _LIBCPP_EXPORTED_FROM_ABI __libcpp_debug_function_type __libcpp_debug_function;
76
77/// __libcpp_abort_debug_function - A debug handler that aborts when called.
78_LIBCPP_NORETURN _LIBCPP_FUNC_VIS
79void __libcpp_abort_debug_function(__libcpp_debug_info const&);
80
81/// __libcpp_set_debug_function - Set the debug handler to the specified
82///    function.
83_LIBCPP_FUNC_VIS
84bool __libcpp_set_debug_function(__libcpp_debug_function_type __func);
85
86#if _LIBCPP_DEBUG_LEVEL >= 2 || defined(_LIBCPP_BUILDING_LIBRARY)
87
88struct _LIBCPP_TYPE_VIS __c_node;
89
90struct _LIBCPP_TYPE_VIS __i_node
91{
92    void* __i_;
93    __i_node* __next_;
94    __c_node* __c_;
95
96#ifndef _LIBCPP_CXX03_LANG
97    __i_node(const __i_node&) = delete;
98    __i_node& operator=(const __i_node&) = delete;
99#else
100private:
101    __i_node(const __i_node&);
102    __i_node& operator=(const __i_node&);
103public:
104#endif
105    _LIBCPP_INLINE_VISIBILITY
106    __i_node(void* __i, __i_node* __next, __c_node* __c)
107        : __i_(__i), __next_(__next), __c_(__c) {}
108    ~__i_node();
109};
110
111struct _LIBCPP_TYPE_VIS __c_node
112{
113    void* __c_;
114    __c_node* __next_;
115    __i_node** beg_;
116    __i_node** end_;
117    __i_node** cap_;
118
119#ifndef _LIBCPP_CXX03_LANG
120    __c_node(const __c_node&) = delete;
121    __c_node& operator=(const __c_node&) = delete;
122#else
123private:
124    __c_node(const __c_node&);
125    __c_node& operator=(const __c_node&);
126public:
127#endif
128    _LIBCPP_INLINE_VISIBILITY
129    __c_node(void* __c, __c_node* __next)
130        : __c_(__c), __next_(__next), beg_(nullptr), end_(nullptr), cap_(nullptr) {}
131    virtual ~__c_node();
132
133    virtual bool __dereferenceable(const void*) const = 0;
134    virtual bool __decrementable(const void*) const = 0;
135    virtual bool __addable(const void*, ptrdiff_t) const = 0;
136    virtual bool __subscriptable(const void*, ptrdiff_t) const = 0;
137
138    void __add(__i_node* __i);
139    _LIBCPP_HIDDEN void __remove(__i_node* __i);
140};
141
142template <class _Cont>
143struct _C_node
144    : public __c_node
145{
146    _C_node(void* __c, __c_node* __n)
147        : __c_node(__c, __n) {}
148
149    virtual bool __dereferenceable(const void*) const;
150    virtual bool __decrementable(const void*) const;
151    virtual bool __addable(const void*, ptrdiff_t) const;
152    virtual bool __subscriptable(const void*, ptrdiff_t) const;
153};
154
155template <class _Cont>
156inline bool
157_C_node<_Cont>::__dereferenceable(const void* __i) const
158{
159    typedef typename _Cont::const_iterator iterator;
160    const iterator* __j = static_cast<const iterator*>(__i);
161    _Cont* _Cp = static_cast<_Cont*>(__c_);
162    return _Cp->__dereferenceable(__j);
163}
164
165template <class _Cont>
166inline bool
167_C_node<_Cont>::__decrementable(const void* __i) const
168{
169    typedef typename _Cont::const_iterator iterator;
170    const iterator* __j = static_cast<const iterator*>(__i);
171    _Cont* _Cp = static_cast<_Cont*>(__c_);
172    return _Cp->__decrementable(__j);
173}
174
175template <class _Cont>
176inline bool
177_C_node<_Cont>::__addable(const void* __i, ptrdiff_t __n) const
178{
179    typedef typename _Cont::const_iterator iterator;
180    const iterator* __j = static_cast<const iterator*>(__i);
181    _Cont* _Cp = static_cast<_Cont*>(__c_);
182    return _Cp->__addable(__j, __n);
183}
184
185template <class _Cont>
186inline bool
187_C_node<_Cont>::__subscriptable(const void* __i, ptrdiff_t __n) const
188{
189    typedef typename _Cont::const_iterator iterator;
190    const iterator* __j = static_cast<const iterator*>(__i);
191    _Cont* _Cp = static_cast<_Cont*>(__c_);
192    return _Cp->__subscriptable(__j, __n);
193}
194
195class _LIBCPP_TYPE_VIS __libcpp_db
196{
197    __c_node** __cbeg_;
198    __c_node** __cend_;
199    size_t   __csz_;
200    __i_node** __ibeg_;
201    __i_node** __iend_;
202    size_t   __isz_;
203
204    __libcpp_db();
205public:
206#ifndef _LIBCPP_CXX03_LANG
207    __libcpp_db(const __libcpp_db&) = delete;
208    __libcpp_db& operator=(const __libcpp_db&) = delete;
209#else
210private:
211    __libcpp_db(const __libcpp_db&);
212    __libcpp_db& operator=(const __libcpp_db&);
213public:
214#endif
215    ~__libcpp_db();
216
217    class __db_c_iterator;
218    class __db_c_const_iterator;
219    class __db_i_iterator;
220    class __db_i_const_iterator;
221
222    __db_c_const_iterator __c_end() const;
223    __db_i_const_iterator __i_end() const;
224
225    typedef __c_node*(_InsertConstruct)(void*, void*, __c_node*);
226
227    template <class _Cont>
228    _LIBCPP_INLINE_VISIBILITY static __c_node* __create_C_node(void *__mem, void *__c, __c_node *__next) {
229        return ::new(__mem) _C_node<_Cont>(__c, __next);
230    }
231
232    template <class _Cont>
233    _LIBCPP_INLINE_VISIBILITY
234    void __insert_c(_Cont* __c)
235    {
236        __insert_c(static_cast<void*>(__c), &__create_C_node<_Cont>);
237    }
238
239    void __insert_i(void* __i);
240    void __insert_c(void* __c, _InsertConstruct* __fn);
241    void __erase_c(void* __c);
242
243    void __insert_ic(void* __i, const void* __c);
244    void __iterator_copy(void* __i, const void* __i0);
245    void __erase_i(void* __i);
246
247    void* __find_c_from_i(void* __i) const;
248    void __invalidate_all(void* __c);
249    __c_node* __find_c_and_lock(void* __c) const;
250    __c_node* __find_c(void* __c) const;
251    void unlock() const;
252
253    void swap(void* __c1, void* __c2);
254
255
256    bool __dereferenceable(const void* __i) const;
257    bool __decrementable(const void* __i) const;
258    bool __addable(const void* __i, ptrdiff_t __n) const;
259    bool __subscriptable(const void* __i, ptrdiff_t __n) const;
260    bool __less_than_comparable(const void* __i, const void* __j) const;
261private:
262    _LIBCPP_HIDDEN
263    __i_node* __insert_iterator(void* __i);
264    _LIBCPP_HIDDEN
265    __i_node* __find_iterator(const void* __i) const;
266
267    friend _LIBCPP_FUNC_VIS __libcpp_db* __get_db();
268};
269
270_LIBCPP_FUNC_VIS __libcpp_db* __get_db();
271_LIBCPP_FUNC_VIS const __libcpp_db* __get_const_db();
272
273
274#endif // _LIBCPP_DEBUG_LEVEL >= 2 || defined(_LIBCPP_BUILDING_LIBRARY)
275
276_LIBCPP_END_NAMESPACE_STD
277
278#endif  // _LIBCPP_DEBUG_H
279