文件操作 - profiler_vector_to_list.h
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文件: /usr/include/c++/8/profile/impl/profiler_vector_to_list.h
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// -*- C++ -*- // // Copyright (C) 2009-2018 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_vector_to_list.h * @brief diagnostics for vector to list. */ // Written by Lixia Liu and Silvius Rus. #ifndef _GLIBCXX_PROFILE_PROFILER_VECTOR_TO_LIST_H #define _GLIBCXX_PROFILE_PROFILER_VECTOR_TO_LIST_H 1 #include "profile/impl/profiler.h" #include "profile/impl/profiler_node.h" #include "profile/impl/profiler_trace.h" namespace __gnu_profile { /** @brief A vector-to-list instrumentation line in the object table. */ class __vector2list_info : public __object_info_base { public: __vector2list_info(__stack_t __stack) : __object_info_base(__stack), _M_shift_count(0), _M_iterate(0), _M_resize(0), _M_list_cost(0), _M_vector_cost(0) { } void __merge(const __vector2list_info& __o) { __object_info_base::__merge(__o); _M_shift_count += __o._M_shift_count; _M_iterate += __o._M_iterate; _M_vector_cost += __o._M_vector_cost; _M_list_cost += __o._M_list_cost; _M_resize += __o._M_resize; } void __write(FILE* __f) const { std::fprintf(__f, "%Zu %Zu %Zu %.0f %.0f\n", _M_shift_count, _M_resize, _M_iterate, _M_vector_cost, _M_list_cost); } float __magnitude() const { return _M_vector_cost - _M_list_cost; } std::string __advice() const { return "change std::vector to std::list"; } std::size_t __shift_count() { return _M_shift_count; } std::size_t __iterate() { return _M_iterate; } float __list_cost() { return _M_list_cost; } std::size_t __resize() { return _M_resize; } void __set_list_cost(float __lc) { _M_list_cost = __lc; } void __set_vector_cost(float __vc) { _M_vector_cost = __vc; } void __opr_insert(std::size_t __pos, std::size_t __num) { _M_shift_count += __num - __pos; } void __opr_iterate(int __num) { __gnu_cxx::__atomic_add(&_M_iterate, __num); } void __resize(std::size_t __from, std::size_t) { _M_resize += __from; } private: std::size_t _M_shift_count; mutable _Atomic_word _M_iterate; std::size_t _M_resize; float _M_list_cost; float _M_vector_cost; }; /** @brief A vector-to-list instrumentation line in the stack table. */ class __vector2list_stack_info : public __vector2list_info { public: __vector2list_stack_info(const __vector2list_info& __o) : __vector2list_info(__o) { } }; /** @brief Vector-to-list instrumentation producer. */ class __trace_vector_to_list : public __trace_base<__vector2list_info, __vector2list_stack_info> { public: __trace_vector_to_list() : __trace_base<__vector2list_info, __vector2list_stack_info>() { __id = "vector-to-list"; } ~__trace_vector_to_list() { } // Call at destruction/clean to set container final size. void __destruct(__vector2list_info* __obj_info) { float __vc = __vector_cost(__obj_info->__shift_count(), __obj_info->__iterate(), __obj_info->__resize()); float __lc = __list_cost(__obj_info->__shift_count(), __obj_info->__iterate(), __obj_info->__resize()); __obj_info->__set_vector_cost(__vc); __obj_info->__set_list_cost(__lc); __retire_object(__obj_info); } // Collect cost of operations. float __vector_cost(std::size_t __shift, std::size_t __iterate, std::size_t __resize) { return (__shift * _GLIBCXX_PROFILE_DATA(__vector_shift_cost_factor).__value + __iterate * _GLIBCXX_PROFILE_DATA(__vector_iterate_cost_factor).__value + __resize * _GLIBCXX_PROFILE_DATA(__vector_resize_cost_factor).__value); } float __list_cost(std::size_t __shift, std::size_t __iterate, std::size_t __resize) { return (__shift * _GLIBCXX_PROFILE_DATA(__list_shift_cost_factor).__value + __iterate * _GLIBCXX_PROFILE_DATA(__list_iterate_cost_factor).__value + __resize * _GLIBCXX_PROFILE_DATA(__list_resize_cost_factor).__value); } }; inline void __trace_vector_to_list_init() { _GLIBCXX_PROFILE_DATA(_S_vector_to_list) = new __trace_vector_to_list(); } inline void __trace_vector_to_list_free() { delete _GLIBCXX_PROFILE_DATA(_S_vector_to_list); } inline void __trace_vector_to_list_report(FILE* __f, __warning_vector_t& __warnings) { __trace_report(_GLIBCXX_PROFILE_DATA(_S_vector_to_list), __f, __warnings); } inline __vector2list_info* __trace_vector_to_list_construct() { if (!__profcxx_init()) return 0; if (!__reentrance_guard::__get_in()) return 0; __reentrance_guard __get_out; return _GLIBCXX_PROFILE_DATA(_S_vector_to_list) ->__add_object(__get_stack()); } inline void __trace_vector_to_list_insert(__vector2list_info* __obj_info, std::size_t __pos, std::size_t __num) { if (!__obj_info) return; __obj_info->__opr_insert(__pos, __num); } inline void __trace_vector_to_list_iterate(__vector2list_info* __obj_info, int) { if (!__obj_info) return; // We only collect if an iteration took place no matter in what side. __obj_info->__opr_iterate(1); } inline void __trace_vector_to_list_invalid_operator(__vector2list_info* __obj_info) { if (!__obj_info) return; __obj_info->__set_invalid(); } inline void __trace_vector_to_list_resize(__vector2list_info* __obj_info, std::size_t __from, std::size_t __to) { if (!__obj_info) return; __obj_info->__resize(__from, __to); } inline void __trace_vector_to_list_destruct(__vector2list_info* __obj_info) { if (!__obj_info) return; _GLIBCXX_PROFILE_DATA(_S_vector_to_list)->__destruct(__obj_info); } } // namespace __gnu_profile #endif /* _GLIBCXX_PROFILE_PROFILER_VECTOR_TO_LIST_H */
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