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_vector_to_list.h 00032 * @brief diagnostics for vector to list. 00033 */ 00034 00035 // Written by Lixia Liu and Silvius Rus. 00036 00037 #ifndef _GLIBCXX_PROFILE_PROFILER_VECTOR_TO_LIST_H 00038 #define _GLIBCXX_PROFILE_PROFILER_VECTOR_TO_LIST_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 /** @brief A vector-to-list instrumentation line in the object table. */ 00047 class __vector2list_info 00048 : public __object_info_base 00049 { 00050 public: 00051 __vector2list_info() 00052 : _M_shift_count(0), _M_iterate(0), _M_resize(0), _M_list_cost(0), 00053 _M_vector_cost(0), _M_valid(true) { } 00054 00055 __vector2list_info(__stack_t __stack) 00056 : __object_info_base(__stack), _M_shift_count(0), _M_iterate(0), 00057 _M_resize(0), _M_list_cost(0), _M_vector_cost(0), _M_valid(true) { } 00058 00059 virtual ~__vector2list_info() { } 00060 00061 __vector2list_info(const __vector2list_info& __o) 00062 : __object_info_base(__o), _M_shift_count(__o._M_shift_count), 00063 _M_iterate(__o._M_iterate), _M_resize(__o._M_resize), 00064 _M_list_cost(__o._M_list_cost), _M_vector_cost(__o._M_vector_cost), 00065 _M_valid(__o._M_valid) { } 00066 00067 void 00068 __merge(const __vector2list_info& __o) 00069 { 00070 _M_shift_count += __o._M_shift_count; 00071 _M_iterate += __o._M_iterate; 00072 _M_vector_cost += __o._M_vector_cost; 00073 _M_list_cost += __o._M_list_cost; 00074 _M_valid &= __o._M_valid; 00075 _M_resize += __o._M_resize; 00076 } 00077 00078 void 00079 __write(FILE* __f) const 00080 { 00081 std::fprintf(__f, "%Zu %Zu %Zu %.0f %.0f\n", _M_shift_count, 00082 _M_resize, _M_iterate, _M_vector_cost, _M_list_cost); 00083 } 00084 00085 float 00086 __magnitude() const 00087 { return _M_vector_cost - _M_list_cost; } 00088 00089 std::string 00090 __advice() const 00091 { return "change std::vector to std::list"; } 00092 00093 std::size_t 00094 __shift_count() 00095 { return _M_shift_count; } 00096 00097 std::size_t 00098 __iterate() 00099 { return _M_iterate; } 00100 00101 float 00102 __list_cost() 00103 { return _M_list_cost; } 00104 00105 std::size_t 00106 __resize() 00107 { return _M_resize; } 00108 00109 void 00110 __set_list_cost(float __lc) 00111 { _M_list_cost = __lc; } 00112 00113 void 00114 __set_vector_cost(float __vc) 00115 { _M_vector_cost = __vc; } 00116 00117 bool 00118 __is_valid() 00119 { return _M_valid; } 00120 00121 void 00122 __set_invalid() 00123 { _M_valid = false; } 00124 00125 void 00126 __opr_insert(std::size_t __pos, std::size_t __num) 00127 { _M_shift_count += __num - __pos; } 00128 00129 void 00130 __opr_iterate(std::size_t __num) 00131 { _M_iterate += __num; } 00132 00133 void 00134 __resize(std::size_t __from, std::size_t) 00135 { _M_resize += __from; } 00136 00137 void 00138 __opr_find(std::size_t __size) 00139 { 00140 // Use average case complexity. 00141 _M_iterate += 3.0 / 4.0 * __size; 00142 } 00143 00144 private: 00145 std::size_t _M_shift_count; 00146 std::size_t _M_iterate; 00147 std::size_t _M_resize; 00148 float _M_list_cost; 00149 float _M_vector_cost; 00150 bool _M_valid; 00151 }; 00152 00153 00154 /** @brief A vector-to-list instrumentation line in the stack table. */ 00155 class __vector2list_stack_info 00156 : public __vector2list_info 00157 { 00158 public: 00159 __vector2list_stack_info(const __vector2list_info& __o) 00160 : __vector2list_info(__o) { } 00161 }; 00162 00163 00164 /** @brief Vector-to-list instrumentation producer. */ 00165 class __trace_vector_to_list 00166 : public __trace_base<__vector2list_info, __vector2list_stack_info> 00167 { 00168 public: 00169 __trace_vector_to_list() 00170 : __trace_base<__vector2list_info, __vector2list_stack_info>() 00171 { __id = "vector-to-list"; } 00172 00173 ~__trace_vector_to_list() { } 00174 00175 // Insert a new node at construct with object, callstack and initial size. 00176 void 00177 __insert(__object_t __obj, __stack_t __stack) 00178 { __add_object(__obj, __vector2list_info(__stack)); } 00179 00180 // Call at destruction/clean to set container final size. 00181 void 00182 __destruct(const void* __obj) 00183 { 00184 if (!__is_on()) 00185 return; 00186 00187 __vector2list_info* __res = __get_object_info(__obj); 00188 if (!__res) 00189 return; 00190 00191 float __vc = __vector_cost(__res->__shift_count(), __res->__iterate(), 00192 __res->__resize()); 00193 float __lc = __list_cost(__res->__shift_count(), __res->__iterate(), 00194 __res->__resize()); 00195 __res->__set_vector_cost(__vc); 00196 __res->__set_list_cost(__lc); 00197 00198 __retire_object(__obj); 00199 } 00200 00201 // Find the node in the live map. 00202 // XXX Undefined?!? 00203 __vector2list_info* __find(const void* __obj); 00204 00205 // Collect cost of operations. 00206 void 00207 __opr_insert(const void* __obj, std::size_t __pos, std::size_t __num) 00208 { 00209 __vector2list_info* __res = __get_object_info(__obj); 00210 if (__res) 00211 __res->__opr_insert(__pos, __num); 00212 } 00213 00214 void 00215 __opr_iterate(const void* __obj, std::size_t __num) 00216 { 00217 __vector2list_info* __res = __get_object_info(__obj); 00218 if (__res) 00219 __res->__opr_iterate(__num); 00220 } 00221 00222 void 00223 __invalid_operator(const void* __obj) 00224 { 00225 __vector2list_info* __res = __get_object_info(__obj); 00226 if (__res) 00227 __res->__set_invalid(); 00228 } 00229 00230 void 00231 __resize(const void* __obj, std::size_t __from, std::size_t __to) 00232 { 00233 __vector2list_info* __res = __get_object_info(__obj); 00234 if (__res) 00235 __res->__resize(__from, __to); 00236 } 00237 00238 float 00239 __vector_cost(std::size_t __shift, std::size_t __iterate, 00240 std::size_t __resize) 00241 { 00242 return (__shift 00243 * _GLIBCXX_PROFILE_DATA(__vector_shift_cost_factor).__value 00244 + __iterate 00245 * _GLIBCXX_PROFILE_DATA(__vector_iterate_cost_factor).__value 00246 + __resize 00247 * _GLIBCXX_PROFILE_DATA(__vector_resize_cost_factor).__value); 00248 } 00249 00250 float 00251 __list_cost(std::size_t __shift, std::size_t __iterate, 00252 std::size_t __resize) 00253 { 00254 return (__shift 00255 * _GLIBCXX_PROFILE_DATA(__list_shift_cost_factor).__value 00256 + __iterate 00257 * _GLIBCXX_PROFILE_DATA(__list_iterate_cost_factor).__value 00258 + __resize 00259 * _GLIBCXX_PROFILE_DATA(__list_resize_cost_factor).__value); 00260 } 00261 00262 void 00263 __opr_find(const void* __obj, std::size_t __size) 00264 { 00265 __vector2list_info* __res = __get_object_info(__obj); 00266 if (__res) 00267 __res->__opr_find(__size); 00268 } 00269 }; 00270 00271 00272 inline void 00273 __trace_vector_to_list_init() 00274 { _GLIBCXX_PROFILE_DATA(_S_vector_to_list) = new __trace_vector_to_list(); } 00275 00276 inline void 00277 __trace_vector_to_list_report(FILE* __f, __warning_vector_t& __warnings) 00278 { 00279 if (_GLIBCXX_PROFILE_DATA(_S_vector_to_list)) 00280 { 00281 _GLIBCXX_PROFILE_DATA(_S_vector_to_list)-> 00282 __collect_warnings(__warnings); 00283 _GLIBCXX_PROFILE_DATA(_S_vector_to_list)->__write(__f); 00284 } 00285 } 00286 00287 inline void 00288 __trace_vector_to_list_construct(const void* __obj) 00289 { 00290 if (!__profcxx_init()) 00291 return; 00292 00293 _GLIBCXX_PROFILE_DATA(_S_vector_to_list)->__insert(__obj, __get_stack()); 00294 } 00295 00296 inline void 00297 __trace_vector_to_list_destruct(const void* __obj) 00298 { 00299 if (!__profcxx_init()) 00300 return; 00301 00302 _GLIBCXX_PROFILE_DATA(_S_vector_to_list)->__destruct(__obj); 00303 } 00304 00305 inline void 00306 __trace_vector_to_list_insert(const void* __obj, std::size_t __pos, 00307 std::size_t __num) 00308 { 00309 if (!__profcxx_init()) 00310 return; 00311 00312 _GLIBCXX_PROFILE_DATA(_S_vector_to_list)->__opr_insert(__obj, __pos, 00313 __num); 00314 } 00315 00316 inline void 00317 __trace_vector_to_list_iterate(const void* __obj, std::size_t __num = 1) 00318 { 00319 if (!__profcxx_init()) 00320 return; 00321 00322 _GLIBCXX_PROFILE_DATA(_S_vector_to_list)->__opr_iterate(__obj, __num); 00323 } 00324 00325 inline void 00326 __trace_vector_to_list_invalid_operator(const void* __obj) 00327 { 00328 if (!__profcxx_init()) 00329 return; 00330 00331 _GLIBCXX_PROFILE_DATA(_S_vector_to_list)->__invalid_operator(__obj); 00332 } 00333 00334 inline void 00335 __trace_vector_to_list_resize(const void* __obj, std::size_t __from, 00336 std::size_t __to) 00337 { 00338 if (!__profcxx_init()) 00339 return; 00340 00341 _GLIBCXX_PROFILE_DATA(_S_vector_to_list)->__resize(__obj, __from, __to); 00342 } 00343 00344 inline void 00345 __trace_vector_to_list_find(const void* __obj, std::size_t __size) 00346 { 00347 if (!__profcxx_init()) 00348 return; 00349 00350 _GLIBCXX_PROFILE_DATA(_S_vector_to_list)->__opr_find(__obj, __size); 00351 } 00352 00353 } // namespace __gnu_profile 00354 #endif /* _GLIBCXX_PROFILE_PROFILER_VECTOR_TO_LIST_H */