1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
// -*- C++ -*-
//
// Copyright (C) 2009-2014 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
/** @file profile/impl/profiler_node.h
* @brief Data structures to represent a single profiling event.
*/
// Written by Lixia Liu and Silvius Rus.
#ifndef _GLIBCXX_PROFILE_PROFILER_NODE_H
#define _GLIBCXX_PROFILE_PROFILER_NODE_H 1
#include <cstdio> // FILE, fprintf
#include <vector>
#if defined _GLIBCXX_HAVE_EXECINFO_H
#include <execinfo.h>
#endif
namespace __gnu_profile
{
typedef const void* __object_t;
typedef void* __instruction_address_t;
typedef std::_GLIBCXX_STD_C::vector<__instruction_address_t> __stack_npt;
typedef __stack_npt* __stack_t;
std::size_t __stack_max_depth();
inline __stack_t
__get_stack()
{
#if defined _GLIBCXX_HAVE_EXECINFO_H
std::size_t __max_depth = __stack_max_depth();
if (__max_depth == 0)
return 0;
__stack_npt __buffer(__max_depth);
int __depth = backtrace(&__buffer[0], __max_depth);
__stack_t __stack = new __stack_npt(__depth);
__builtin_memcpy(&(*__stack)[0], &__buffer[0],
__depth * sizeof(__object_t));
return __stack;
#else
return 0;
#endif
}
inline std::size_t
__size(__stack_t __stack)
{
if (!__stack)
return 0;
else
return __stack->size();
}
// XXX
inline void
__write(FILE* __f, __stack_t __stack)
{
if (!__stack)
return;
__stack_npt::const_iterator __it;
for (__it = __stack->begin(); __it != __stack->end(); ++__it)
std::fprintf(__f, "%p ", *__it);
}
/** @brief Hash function for summary trace using call stack as index. */
class __stack_hash
{
public:
std::size_t
operator()(__stack_t __s) const
{
if (!__s)
return 0;
std::size_t __index = 0;
__stack_npt::const_iterator __it;
for (__it = __s->begin(); __it != __s->end(); ++__it)
__index += reinterpret_cast<std::size_t>(*__it);
return __index;
}
bool operator() (__stack_t __stack1, __stack_t __stack2) const
{
if (!__stack1 && !__stack2)
return true;
if (!__stack1 || !__stack2)
return false;
if (__stack1->size() != __stack2->size())
return false;
std::size_t __byte_size
= __stack1->size() * sizeof(__stack_npt::value_type);
return __builtin_memcmp(&(*__stack1)[0], &(*__stack2)[0],
__byte_size) == 0;
}
};
/** @brief Base class for a line in the object table. */
class __object_info_base
{
public:
__object_info_base() { }
__object_info_base(__stack_t __stack)
: _M_stack(__stack), _M_valid(true) { }
__object_info_base(const __object_info_base& __o)
: _M_stack(__o._M_stack), _M_valid(__o._M_valid) { }
virtual ~__object_info_base() { }
bool
__is_valid() const
{ return _M_valid; }
__stack_t
__stack() const
{ return _M_stack; }
virtual void __write(FILE* __f) const = 0;
protected:
__stack_t _M_stack;
bool _M_valid;
};
/** @brief Base class for a line in the stack table. */
template<typename __object_info>
class __stack_info_base
{
public:
__stack_info_base() { }
__stack_info_base(const __object_info& __info) = 0;
virtual ~__stack_info_base() {}
void __merge(const __object_info& __info) = 0;
virtual float __magnitude() const = 0;
virtual const char* __get_id() const = 0;
};
} // namespace __gnu_profile
#endif /* _GLIBCXX_PROFILE_PROFILER_NODE_H */
|
