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1218d701 SR |
1 | // -*- C++ -*- |
2 | // | |
30f276c1 | 3 | // Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc. |
1218d701 SR |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the terms | |
7 | // of the GNU General Public License as published by the Free Software | |
8 | // Foundation; either version 2, or (at your option) any later | |
9 | // version. | |
10 | ||
11 | // This library is distributed in the hope that it will be useful, but | |
12 | // WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | // General Public License for more details. | |
15 | ||
16 | // You should have received a copy of the GNU General Public License | |
17 | // along with this library; see the file COPYING. If not, write to | |
18 | // the Free Software Foundation, 59 Temple Place - Suite 330, Boston, | |
19 | // MA 02111-1307, USA. | |
20 | ||
21 | // As a special exception, you may use this file as part of a free | |
22 | // software library without restriction. Specifically, if other files | |
23 | // instantiate templates or use macros or inline functions from this | |
24 | // file, or you compile this file and link it with other files to | |
25 | // produce an executable, this file does not by itself cause the | |
26 | // resulting executable to be covered by the GNU General Public | |
27 | // License. This exception does not however invalidate any other | |
28 | // reasons why the executable file might be covered by the GNU General | |
29 | // Public License. | |
30 | ||
30f276c1 | 31 | /** @file profile/impl/profiler_container_size.h |
1218d701 SR |
32 | * @brief Diagnostics for container sizes. |
33 | */ | |
34 | ||
35 | // Written by Lixia Liu and Silvius Rus. | |
36 | ||
6b223191 BK |
37 | #ifndef _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H |
38 | #define _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H 1 | |
1218d701 | 39 | |
a1360f57 SR |
40 | #include <sstream> |
41 | ||
1218d701 SR |
42 | #include "profile/impl/profiler.h" |
43 | #include "profile/impl/profiler_node.h" | |
44 | #include "profile/impl/profiler_trace.h" | |
45 | ||
9ee6a740 | 46 | namespace __gnu_profile |
1218d701 | 47 | { |
b0af13ea | 48 | /** @brief A container size instrumentation line in the object table. */ |
c7d42abb | 49 | class __container_size_info |
b0af13ea PC |
50 | : public __object_info_base |
51 | { | |
52 | public: | |
53 | __container_size_info() | |
54 | : _M_init(0), _M_max(0), _M_min(0), _M_total(0), _M_item_min(0), | |
55 | _M_item_max(0), _M_item_total(0), _M_count(0), _M_resize(0), _M_cost(0) | |
56 | { } | |
57 | ||
58 | __container_size_info(const __container_size_info& __o) | |
59 | : __object_info_base(__o), _M_init(__o._M_init), _M_max(__o._M_max), | |
60 | _M_min(__o._M_min), _M_total(__o._M_total), | |
61 | _M_item_min(__o._M_item_min), _M_item_max(__o._M_item_max), | |
62 | _M_item_total(__o._M_item_total), _M_count(__o._M_count), | |
63 | _M_resize(__o._M_resize), _M_cost(__o._M_cost) | |
64 | { } | |
65 | ||
c7d42abb | 66 | __container_size_info(__stack_t __stack, std::size_t __num) |
b0af13ea PC |
67 | : __object_info_base(__stack), _M_init(__num), _M_max(__num), |
68 | _M_min(0), _M_total(0), _M_item_min(0), _M_item_max(0), | |
69 | _M_item_total(0), _M_count(0), _M_resize(0), _M_cost(0) | |
70 | { } | |
71 | ||
72 | virtual ~__container_size_info() { } | |
73 | ||
74 | void | |
75 | __write(FILE* __f) const | |
76 | { | |
c7d42abb PC |
77 | std::fprintf(__f, "%Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu\n", |
78 | _M_init, _M_count, _M_cost, _M_resize, _M_min, _M_max, | |
79 | _M_total, _M_item_min, _M_item_max, _M_item_total); | |
b0af13ea PC |
80 | } |
81 | ||
82 | float | |
83 | __magnitude() const | |
84 | { return static_cast<float>(_M_cost); } | |
85 | ||
c7d42abb | 86 | std::string |
b0af13ea PC |
87 | __advice() const |
88 | { | |
89 | std::stringstream __message; | |
90 | if (_M_init < _M_item_max) | |
91 | __message << "change initial container size from " << _M_init | |
92 | << " to " << _M_item_max; | |
c7d42abb | 93 | return __message.str(); |
b0af13ea PC |
94 | } |
95 | ||
96 | void | |
97 | __merge(const __container_size_info& __o) | |
98 | { | |
99 | _M_init = std::max(_M_init, __o._M_init); | |
100 | _M_max = std::max(_M_max, __o._M_max); | |
101 | _M_item_max = std::max(_M_item_max, __o._M_item_max); | |
102 | _M_min = std::min(_M_min, __o._M_min); | |
103 | _M_item_min = std::min(_M_item_min, __o._M_item_min); | |
104 | _M_total += __o._M_total; | |
105 | _M_item_total += __o._M_item_total; | |
106 | _M_count += __o._M_count; | |
107 | _M_cost += __o._M_cost; | |
108 | _M_resize += __o._M_resize; | |
109 | } | |
110 | ||
111 | // Call if a container is destructed or cleaned. | |
112 | void | |
c7d42abb | 113 | __destruct(std::size_t __num, std::size_t __inum) |
b0af13ea PC |
114 | { |
115 | _M_max = std::max(_M_max, __num); | |
116 | _M_item_max = std::max(_M_item_max, __inum); | |
117 | if (_M_min == 0) | |
118 | { | |
119 | _M_min = __num; | |
120 | _M_item_min = __inum; | |
121 | } | |
122 | else | |
123 | { | |
124 | _M_min = std::min(_M_min, __num); | |
125 | _M_item_min = std::min(_M_item_min, __inum); | |
126 | } | |
127 | _M_total += __num; | |
128 | _M_item_total += __inum; | |
129 | _M_count += 1; | |
130 | } | |
131 | ||
132 | // Estimate the cost of resize/rehash. | |
133 | float | |
c7d42abb | 134 | __resize_cost(std::size_t __from, std::size_t) |
b0af13ea PC |
135 | { return __from; } |
136 | ||
137 | // Call if container is resized. | |
138 | void | |
c7d42abb | 139 | __resize(std::size_t __from, std::size_t __to) |
b0af13ea PC |
140 | { |
141 | _M_cost += this->__resize_cost(__from, __to); | |
142 | _M_resize += 1; | |
143 | _M_max = std::max(_M_max, __to); | |
144 | } | |
145 | ||
146 | private: | |
c7d42abb PC |
147 | std::size_t _M_init; |
148 | std::size_t _M_max; // range of # buckets | |
149 | std::size_t _M_min; | |
150 | std::size_t _M_total; | |
151 | std::size_t _M_item_min; // range of # items | |
152 | std::size_t _M_item_max; | |
153 | std::size_t _M_item_total; | |
154 | std::size_t _M_count; | |
155 | std::size_t _M_resize; | |
156 | std::size_t _M_cost; | |
b0af13ea PC |
157 | }; |
158 | ||
159 | ||
160 | /** @brief A container size instrumentation line in the stack table. */ | |
161 | class __container_size_stack_info | |
162 | : public __container_size_info | |
163 | { | |
164 | public: | |
165 | __container_size_stack_info(const __container_size_info& __o) | |
166 | : __container_size_info(__o) { } | |
167 | }; | |
168 | ||
169 | ||
170 | /** @brief Container size instrumentation trace producer. */ | |
171 | class __trace_container_size | |
172 | : public __trace_base<__container_size_info, __container_size_stack_info> | |
173 | { | |
174 | public: | |
175 | ~__trace_container_size() { } | |
176 | ||
177 | __trace_container_size() | |
178 | : __trace_base<__container_size_info, __container_size_stack_info>() { }; | |
179 | ||
180 | // Insert a new node at construct with object, callstack and initial size. | |
181 | void | |
47d660fb | 182 | __insert(const __object_t __obj, __stack_t __stack, std::size_t __num) |
b0af13ea PC |
183 | { __add_object(__obj, __container_size_info(__stack, __num)); } |
184 | ||
185 | // XXX Undefined? | |
186 | void | |
47d660fb | 187 | __construct(const void* __obj, std::size_t __inum); |
b0af13ea PC |
188 | |
189 | // Call at destruction/clean to set container final size. | |
190 | void | |
47d660fb | 191 | __destruct(const void* __obj, std::size_t __num, std::size_t __inum) |
b0af13ea PC |
192 | { |
193 | if (!__is_on()) | |
194 | return; | |
195 | ||
196 | __object_t __obj_handle = static_cast<__object_t>(__obj); | |
197 | ||
198 | __container_size_info* __object_info = __get_object_info(__obj_handle); | |
199 | if (!__object_info) | |
200 | return; | |
201 | ||
202 | __object_info->__destruct(__num, __inum); | |
203 | __retire_object(__obj_handle); | |
204 | } | |
205 | ||
206 | // Call at resize to set resize/cost information. | |
207 | void | |
208 | __resize(const void* __obj, int __from, int __to) | |
209 | { | |
210 | if (!__is_on()) | |
211 | return; | |
212 | ||
213 | __container_size_info* __object_info = __get_object_info(__obj); | |
214 | if (!__object_info) | |
215 | return; | |
216 | ||
217 | __object_info->__resize(__from, __to); | |
218 | } | |
219 | }; | |
1218d701 | 220 | |
9ee6a740 | 221 | } // namespace __gnu_profile |
6b223191 | 222 | #endif /* _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H */ |