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
|
// -*- C++ -*-
//
// Copyright (C) 2009-2015 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_hash_func.h
* @brief Data structures to represent profiling traces.
*/
// Written by Lixia Liu and Silvius Rus.
#ifndef _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H
#define _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H 1
#include "profile/impl/profiler.h"
#include "profile/impl/profiler_node.h"
#include "profile/impl/profiler_trace.h"
namespace __gnu_profile
{
/** @brief A hash performance instrumentation line in the object table. */
class __hashfunc_info
: public __object_info_base
{
public:
__hashfunc_info(__stack_t __stack)
: __object_info_base(__stack), _M_longest_chain(0),
_M_accesses(0), _M_hops(0) { }
void
__merge(const __hashfunc_info& __o)
{
__object_info_base::__merge(__o);
_M_longest_chain = std::max(_M_longest_chain, __o._M_longest_chain);
_M_accesses += __o._M_accesses;
_M_hops += __o._M_hops;
}
void
__destruct(std::size_t __chain, std::size_t __accesses,
std::size_t __hops)
{
_M_longest_chain = std::max(_M_longest_chain, __chain);
_M_accesses += __accesses;
_M_hops += __hops;
}
void
__write(FILE* __f) const
{ std::fprintf(__f, "%Zu %Zu %Zu\n", _M_hops,
_M_accesses, _M_longest_chain); }
float
__magnitude() const
{ return static_cast<float>(_M_hops); }
std::string
__advice() const
{ return "change hash function"; }
private:
std::size_t _M_longest_chain;
std::size_t _M_accesses;
std::size_t _M_hops;
};
/** @brief A hash performance instrumentation line in the stack table. */
class __hashfunc_stack_info
: public __hashfunc_info
{
public:
__hashfunc_stack_info(const __hashfunc_info& __o)
: __hashfunc_info(__o) { }
};
/** @brief Hash performance instrumentation producer. */
class __trace_hash_func
: public __trace_base<__hashfunc_info, __hashfunc_stack_info>
{
public:
__trace_hash_func()
: __trace_base<__hashfunc_info, __hashfunc_stack_info>()
{ __id = "hash-distr"; }
~__trace_hash_func() {}
// Call at destruction/clean to set container final size.
void
__destruct(__hashfunc_info* __obj_info,
std::size_t __chain, std::size_t __accesses, std::size_t __hops)
{
if (!__obj_info)
return;
__obj_info->__destruct(__chain, __accesses, __hops);
__retire_object(__obj_info);
}
};
inline void
__trace_hash_func_init()
{ _GLIBCXX_PROFILE_DATA(_S_hash_func) = new __trace_hash_func(); }
inline void
__trace_hash_func_free()
{ delete _GLIBCXX_PROFILE_DATA(_S_hash_func); }
inline void
__trace_hash_func_report(FILE* __f, __warning_vector_t& __warnings)
{ __trace_report(_GLIBCXX_PROFILE_DATA(_S_hash_func), __f, __warnings); }
inline __hashfunc_info*
__trace_hash_func_construct()
{
if (!__profcxx_init())
return 0;
if (!__reentrance_guard::__get_in())
return 0;
__reentrance_guard __get_out;
return _GLIBCXX_PROFILE_DATA(_S_hash_func)->__add_object(__get_stack());
}
inline void
__trace_hash_func_destruct(__hashfunc_info* __obj_info,
std::size_t __chain, std::size_t __accesses,
std::size_t __hops)
{
_GLIBCXX_PROFILE_DATA(_S_hash_func)->__destruct(__obj_info, __chain,
__accesses, __hops);
}
} // namespace __gnu_profile
#endif /* _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H */
|
