libstdc++
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00001 // -*- C++ -*- 00002 // 00003 // Copyright (C) 2009, 2010 Free Software Foundation, Inc. 00004 // 00005 // This file is part of the GNU ISO C++ Library. This library is free 00006 // software; you can redistribute it and/or modify it under the terms 00007 // of the GNU General Public License as published by the Free Software 00008 // Foundation; either version 2, or (at your option) any later 00009 // version. 00010 00011 // This library is distributed in the hope that it will be useful, but 00012 // WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 // General Public License for more details. 00015 00016 // You should have received a copy of the GNU General Public License 00017 // along with this library; see the file COPYING. If not, write to 00018 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston, 00019 // MA 02111-1307, USA. 00020 00021 // As a special exception, you may use this file as part of a free 00022 // software library without restriction. Specifically, if other files 00023 // instantiate templates or use macros or inline functions from this 00024 // file, or you compile this file and link it with other files to 00025 // produce an executable, this file does not by itself cause the 00026 // resulting executable to be covered by the GNU General Public 00027 // License. This exception does not however invalidate any other 00028 // reasons why the executable file might be covered by the GNU General 00029 // Public License. 00030 00031 /** @file profile/impl/profiler_map_to_unordered_map.h 00032 * @brief Diagnostics for map to unordered_map. 00033 */ 00034 00035 // Written by Silvius Rus. 00036 00037 #ifndef _GLIBCXX_PROFILE_PROFILER_MAP_TO_UNORDERED_MAP_H 00038 #define _GLIBCXX_PROFILE_PROFILER_MAP_TO_UNORDERED_MAP_H 1 00039 00040 #include "profile/impl/profiler.h" 00041 #include "profile/impl/profiler_node.h" 00042 #include "profile/impl/profiler_trace.h" 00043 00044 namespace __gnu_profile 00045 { 00046 inline int 00047 __log2(std::size_t __size) 00048 { 00049 for (int __bit_count = sizeof(std::size_t) - 1; __bit_count >= 0; 00050 -- __bit_count) 00051 if ((2 << __bit_count) & __size) 00052 return __bit_count; 00053 return 0; 00054 } 00055 00056 inline float 00057 __map_insert_cost(std::size_t __size) 00058 { return (_GLIBCXX_PROFILE_DATA(__map_insert_cost_factor).__value 00059 * static_cast<float>(__log2(__size))); } 00060 00061 inline float 00062 __map_erase_cost(std::size_t __size) 00063 { return (_GLIBCXX_PROFILE_DATA(__map_erase_cost_factor).__value 00064 * static_cast<float>(__log2(__size))); } 00065 00066 inline float 00067 __map_find_cost(std::size_t __size) 00068 { return (_GLIBCXX_PROFILE_DATA(__map_find_cost_factor).__value 00069 * static_cast<float>(__log2(__size))); } 00070 00071 /** @brief A map-to-unordered_map instrumentation line in the 00072 object table. */ 00073 class __map2umap_info 00074 : public __object_info_base 00075 { 00076 public: 00077 __map2umap_info() 00078 : _M_insert(0), _M_erase(0), _M_find(0), _M_iterate(0), 00079 _M_umap_cost(0.0), _M_map_cost(0.0), _M_valid(true) { } 00080 00081 __map2umap_info(__stack_t __stack) 00082 : __object_info_base(__stack), _M_insert(0), _M_erase(0), _M_find(0), 00083 _M_iterate(0), _M_umap_cost(0.0), _M_map_cost(0.0), _M_valid(true) { } 00084 00085 virtual ~__map2umap_info() { } 00086 00087 __map2umap_info(const __map2umap_info& __o) 00088 : __object_info_base(__o), _M_insert(__o._M_insert), 00089 _M_erase(__o._M_erase), _M_find(__o._M_find), 00090 _M_iterate(__o._M_iterate), _M_umap_cost(__o._M_umap_cost), 00091 _M_map_cost(__o._M_map_cost), _M_valid(__o._M_valid) { } 00092 00093 void 00094 __merge(const __map2umap_info& __o) 00095 { 00096 _M_insert += __o._M_insert; 00097 _M_erase += __o._M_erase; 00098 _M_find += __o._M_find; 00099 _M_umap_cost += __o._M_umap_cost; 00100 _M_map_cost += __o._M_map_cost; 00101 _M_valid &= __o._M_valid; 00102 } 00103 00104 void 00105 __write(FILE* __f) const 00106 { 00107 std::fprintf(__f, "%Zu %Zu %Zu %Zu %.0f %.0f %s\n", 00108 _M_insert, _M_erase, _M_find, _M_iterate, _M_map_cost, 00109 _M_umap_cost, _M_valid ? "valid" : "invalid"); 00110 } 00111 00112 float 00113 __magnitude() const 00114 { return _M_map_cost - _M_umap_cost; } 00115 00116 std::string 00117 __advice() const 00118 { return "change std::map to std::unordered_map"; } 00119 00120 void 00121 __record_insert(std::size_t __size, std::size_t __count) 00122 { 00123 _M_insert += __count; 00124 _M_map_cost += __count * __map_insert_cost(__size); 00125 _M_umap_cost 00126 += (__count 00127 * _GLIBCXX_PROFILE_DATA(__umap_insert_cost_factor).__value); 00128 } 00129 00130 void 00131 __record_erase(std::size_t __size, std::size_t __count) 00132 { 00133 _M_erase += __count; 00134 _M_map_cost += __count * __map_erase_cost(__size); 00135 _M_umap_cost 00136 += (__count 00137 * _GLIBCXX_PROFILE_DATA(__umap_erase_cost_factor).__value); 00138 } 00139 00140 void 00141 __record_find(std::size_t __size) 00142 { 00143 _M_find += 1; 00144 _M_map_cost += __map_find_cost(__size); 00145 _M_umap_cost += _GLIBCXX_PROFILE_DATA(__umap_find_cost_factor).__value; 00146 } 00147 00148 void 00149 __record_iterate(std::size_t __count) 00150 { 00151 _M_iterate += __count; 00152 _M_map_cost 00153 += (__count 00154 * _GLIBCXX_PROFILE_DATA(__map_iterate_cost_factor).__value); 00155 _M_umap_cost 00156 += (__count 00157 * _GLIBCXX_PROFILE_DATA(__umap_iterate_cost_factor).__value); 00158 } 00159 00160 void 00161 __record_invalidate() 00162 { _M_valid = false; } 00163 00164 private: 00165 std::size_t _M_insert; 00166 std::size_t _M_erase; 00167 std::size_t _M_find; 00168 std::size_t _M_iterate; 00169 float _M_umap_cost; 00170 float _M_map_cost; 00171 bool _M_valid; 00172 }; 00173 00174 00175 /** @brief A map-to-unordered_map instrumentation line in the 00176 stack table. */ 00177 class __map2umap_stack_info 00178 : public __map2umap_info 00179 { 00180 public: 00181 __map2umap_stack_info(const __map2umap_info& __o) 00182 : __map2umap_info(__o) { } 00183 }; 00184 00185 /** @brief Map-to-unordered_map instrumentation producer. */ 00186 class __trace_map2umap 00187 : public __trace_base<__map2umap_info, __map2umap_stack_info> 00188 { 00189 public: 00190 __trace_map2umap() 00191 : __trace_base<__map2umap_info, __map2umap_stack_info>() 00192 { __id = "map-to-unordered-map"; } 00193 }; 00194 00195 inline void 00196 __trace_map_to_unordered_map_init() 00197 { _GLIBCXX_PROFILE_DATA(_S_map2umap) = new __trace_map2umap(); } 00198 00199 inline void 00200 __trace_map_to_unordered_map_report(FILE* __f, 00201 __warning_vector_t& __warnings) 00202 { 00203 if (_GLIBCXX_PROFILE_DATA(_S_map2umap)) 00204 { 00205 _GLIBCXX_PROFILE_DATA(_S_map2umap)->__collect_warnings(__warnings); 00206 _GLIBCXX_PROFILE_DATA(_S_map2umap)->__write(__f); 00207 } 00208 } 00209 00210 inline void 00211 __trace_map_to_unordered_map_construct(const void* __obj) 00212 { 00213 if (!__profcxx_init()) 00214 return; 00215 00216 _GLIBCXX_PROFILE_DATA(_S_map2umap)-> 00217 __add_object(__obj, __map2umap_info(__get_stack())); 00218 } 00219 00220 inline void 00221 __trace_map_to_unordered_map_destruct(const void* __obj) 00222 { 00223 if (!__profcxx_init()) 00224 return; 00225 00226 _GLIBCXX_PROFILE_DATA(_S_map2umap)->__retire_object(__obj); 00227 } 00228 00229 inline void 00230 __trace_map_to_unordered_map_insert(const void* __obj, 00231 std::size_t __size, std::size_t __count) 00232 { 00233 if (!__profcxx_init()) 00234 return; 00235 00236 __map2umap_info* __info 00237 = _GLIBCXX_PROFILE_DATA(_S_map2umap)->__get_object_info(__obj); 00238 00239 if (__info) 00240 __info->__record_insert(__size, __count); 00241 } 00242 00243 inline void 00244 __trace_map_to_unordered_map_erase(const void* __obj, 00245 std::size_t __size, std::size_t __count) 00246 { 00247 if (!__profcxx_init()) 00248 return; 00249 00250 __map2umap_info* __info 00251 = _GLIBCXX_PROFILE_DATA(_S_map2umap)->__get_object_info(__obj); 00252 00253 if (__info) 00254 __info->__record_erase(__size, __count); 00255 } 00256 00257 inline void 00258 __trace_map_to_unordered_map_find(const void* __obj, std::size_t __size) 00259 { 00260 if (!__profcxx_init()) 00261 return; 00262 00263 __map2umap_info* __info 00264 = _GLIBCXX_PROFILE_DATA(_S_map2umap)->__get_object_info(__obj); 00265 00266 if (__info) 00267 __info->__record_find(__size); 00268 } 00269 00270 inline void 00271 __trace_map_to_unordered_map_iterate(const void* __obj, std::size_t __count) 00272 { 00273 if (!__profcxx_init()) 00274 return; 00275 00276 __map2umap_info* __info 00277 = _GLIBCXX_PROFILE_DATA(_S_map2umap)->__get_object_info(__obj); 00278 00279 if (__info) 00280 __info->__record_iterate(__count); 00281 } 00282 00283 inline void 00284 __trace_map_to_unordered_map_invalidate(const void* __obj) 00285 { 00286 if (!__profcxx_init()) 00287 return; 00288 00289 __map2umap_info* __info 00290 = _GLIBCXX_PROFILE_DATA(_S_map2umap)->__get_object_info(__obj); 00291 00292 if (__info) 00293 __info->__record_invalidate(); 00294 } 00295 00296 } // namespace __gnu_profile 00297 #endif /* _GLIBCXX_PROFILE_PROFILER_MAP_TO_UNORDERED_MAP_H */