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1 | // -*- C++ -*- |
2 | // | |
aa118a03 | 3 | // Copyright (C) 2009-2014 Free Software Foundation, Inc. |
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4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
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6 | // software; you can redistribute it and/or modify it under the |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
9 | // any later version. | |
10 | // | |
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
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15 | |
16 | // Under Section 7 of GPL version 3, you are granted additional | |
17 | // permissions described in the GCC Runtime Library Exception, version | |
18 | // 3.1, as published by the Free Software Foundation. | |
19 | ||
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20 | // You should have received a copy of the GNU General Public License along |
21 | // with this library; see the file COPYING3. If not see | |
22 | // <http://www.gnu.org/licenses/>. | |
1218d701 | 23 | |
30f276c1 | 24 | /** @file profile/impl/profiler_container_size.h |
1218d701 SR |
25 | * @brief Diagnostics for container sizes. |
26 | */ | |
27 | ||
28 | // Written by Lixia Liu and Silvius Rus. | |
29 | ||
6b223191 BK |
30 | #ifndef _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H |
31 | #define _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H 1 | |
1218d701 | 32 | |
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33 | #include <sstream> |
34 | ||
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35 | #include "profile/impl/profiler.h" |
36 | #include "profile/impl/profiler_node.h" | |
37 | #include "profile/impl/profiler_trace.h" | |
38 | ||
9ee6a740 | 39 | namespace __gnu_profile |
1218d701 | 40 | { |
b0af13ea | 41 | /** @brief A container size instrumentation line in the object table. */ |
c7d42abb | 42 | class __container_size_info |
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43 | : public __object_info_base |
44 | { | |
45 | public: | |
46 | __container_size_info() | |
47 | : _M_init(0), _M_max(0), _M_min(0), _M_total(0), _M_item_min(0), | |
48 | _M_item_max(0), _M_item_total(0), _M_count(0), _M_resize(0), _M_cost(0) | |
49 | { } | |
50 | ||
51 | __container_size_info(const __container_size_info& __o) | |
52 | : __object_info_base(__o), _M_init(__o._M_init), _M_max(__o._M_max), | |
53 | _M_min(__o._M_min), _M_total(__o._M_total), | |
54 | _M_item_min(__o._M_item_min), _M_item_max(__o._M_item_max), | |
55 | _M_item_total(__o._M_item_total), _M_count(__o._M_count), | |
56 | _M_resize(__o._M_resize), _M_cost(__o._M_cost) | |
57 | { } | |
58 | ||
c7d42abb | 59 | __container_size_info(__stack_t __stack, std::size_t __num) |
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60 | : __object_info_base(__stack), _M_init(__num), _M_max(__num), |
61 | _M_min(0), _M_total(0), _M_item_min(0), _M_item_max(0), | |
62 | _M_item_total(0), _M_count(0), _M_resize(0), _M_cost(0) | |
63 | { } | |
64 | ||
65 | virtual ~__container_size_info() { } | |
66 | ||
67 | void | |
68 | __write(FILE* __f) const | |
69 | { | |
c7d42abb PC |
70 | std::fprintf(__f, "%Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu\n", |
71 | _M_init, _M_count, _M_cost, _M_resize, _M_min, _M_max, | |
72 | _M_total, _M_item_min, _M_item_max, _M_item_total); | |
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73 | } |
74 | ||
75 | float | |
76 | __magnitude() const | |
77 | { return static_cast<float>(_M_cost); } | |
78 | ||
c7d42abb | 79 | std::string |
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80 | __advice() const |
81 | { | |
82 | std::stringstream __message; | |
83 | if (_M_init < _M_item_max) | |
84 | __message << "change initial container size from " << _M_init | |
85 | << " to " << _M_item_max; | |
c7d42abb | 86 | return __message.str(); |
b0af13ea PC |
87 | } |
88 | ||
89 | void | |
90 | __merge(const __container_size_info& __o) | |
91 | { | |
92 | _M_init = std::max(_M_init, __o._M_init); | |
93 | _M_max = std::max(_M_max, __o._M_max); | |
94 | _M_item_max = std::max(_M_item_max, __o._M_item_max); | |
95 | _M_min = std::min(_M_min, __o._M_min); | |
96 | _M_item_min = std::min(_M_item_min, __o._M_item_min); | |
97 | _M_total += __o._M_total; | |
98 | _M_item_total += __o._M_item_total; | |
99 | _M_count += __o._M_count; | |
100 | _M_cost += __o._M_cost; | |
101 | _M_resize += __o._M_resize; | |
102 | } | |
103 | ||
104 | // Call if a container is destructed or cleaned. | |
105 | void | |
c7d42abb | 106 | __destruct(std::size_t __num, std::size_t __inum) |
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107 | { |
108 | _M_max = std::max(_M_max, __num); | |
109 | _M_item_max = std::max(_M_item_max, __inum); | |
110 | if (_M_min == 0) | |
111 | { | |
112 | _M_min = __num; | |
113 | _M_item_min = __inum; | |
114 | } | |
115 | else | |
116 | { | |
117 | _M_min = std::min(_M_min, __num); | |
118 | _M_item_min = std::min(_M_item_min, __inum); | |
119 | } | |
120 | _M_total += __num; | |
121 | _M_item_total += __inum; | |
122 | _M_count += 1; | |
123 | } | |
124 | ||
125 | // Estimate the cost of resize/rehash. | |
126 | float | |
c7d42abb | 127 | __resize_cost(std::size_t __from, std::size_t) |
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128 | { return __from; } |
129 | ||
130 | // Call if container is resized. | |
131 | void | |
c7d42abb | 132 | __resize(std::size_t __from, std::size_t __to) |
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133 | { |
134 | _M_cost += this->__resize_cost(__from, __to); | |
135 | _M_resize += 1; | |
136 | _M_max = std::max(_M_max, __to); | |
137 | } | |
138 | ||
139 | private: | |
c7d42abb PC |
140 | std::size_t _M_init; |
141 | std::size_t _M_max; // range of # buckets | |
142 | std::size_t _M_min; | |
143 | std::size_t _M_total; | |
144 | std::size_t _M_item_min; // range of # items | |
145 | std::size_t _M_item_max; | |
146 | std::size_t _M_item_total; | |
147 | std::size_t _M_count; | |
148 | std::size_t _M_resize; | |
149 | std::size_t _M_cost; | |
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150 | }; |
151 | ||
152 | ||
153 | /** @brief A container size instrumentation line in the stack table. */ | |
154 | class __container_size_stack_info | |
155 | : public __container_size_info | |
156 | { | |
157 | public: | |
158 | __container_size_stack_info(const __container_size_info& __o) | |
159 | : __container_size_info(__o) { } | |
160 | }; | |
161 | ||
162 | ||
163 | /** @brief Container size instrumentation trace producer. */ | |
164 | class __trace_container_size | |
165 | : public __trace_base<__container_size_info, __container_size_stack_info> | |
166 | { | |
167 | public: | |
168 | ~__trace_container_size() { } | |
169 | ||
170 | __trace_container_size() | |
171 | : __trace_base<__container_size_info, __container_size_stack_info>() { }; | |
172 | ||
173 | // Insert a new node at construct with object, callstack and initial size. | |
174 | void | |
47d660fb | 175 | __insert(const __object_t __obj, __stack_t __stack, std::size_t __num) |
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176 | { __add_object(__obj, __container_size_info(__stack, __num)); } |
177 | ||
178 | // XXX Undefined? | |
179 | void | |
47d660fb | 180 | __construct(const void* __obj, std::size_t __inum); |
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181 | |
182 | // Call at destruction/clean to set container final size. | |
183 | void | |
47d660fb | 184 | __destruct(const void* __obj, std::size_t __num, std::size_t __inum) |
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185 | { |
186 | if (!__is_on()) | |
187 | return; | |
188 | ||
189 | __object_t __obj_handle = static_cast<__object_t>(__obj); | |
190 | ||
191 | __container_size_info* __object_info = __get_object_info(__obj_handle); | |
192 | if (!__object_info) | |
193 | return; | |
194 | ||
195 | __object_info->__destruct(__num, __inum); | |
196 | __retire_object(__obj_handle); | |
197 | } | |
198 | ||
199 | // Call at resize to set resize/cost information. | |
200 | void | |
201 | __resize(const void* __obj, int __from, int __to) | |
202 | { | |
203 | if (!__is_on()) | |
204 | return; | |
205 | ||
206 | __container_size_info* __object_info = __get_object_info(__obj); | |
207 | if (!__object_info) | |
208 | return; | |
209 | ||
210 | __object_info->__resize(__from, __to); | |
211 | } | |
212 | }; | |
1218d701 | 213 | |
9ee6a740 | 214 | } // namespace __gnu_profile |
6b223191 | 215 | #endif /* _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H */ |