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profiler_list_to_vector.h
// -*- 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_list_to_vector.h * @brief diagnostics for list to vector. */ // Written by Changhee Jung. #ifndef _GLIBCXX_PROFILE_PROFILER_LIST_TO_VECTOR_H #define _GLIBCXX_PROFILE_PROFILER_LIST_TO_VECTOR_H 1 #include <sstream> #include "profile/impl/profiler.h" #include "profile/impl/profiler_node.h" #include "profile/impl/profiler_trace.h" namespace __gnu_profile { /** @brief A list-to-vector instrumentation line in the object table. */ class __list2vector_info : public __object_info_base { public: __list2vector_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), _M_max_size(0) { } void __merge(const __list2vector_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; _M_max_size = std::max( _M_max_size, __o._M_max_size); } 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_list_cost - _M_vector_cost; } std::string __advice() const { std::stringstream __sstream; __sstream << "change std::list to std::vector and its initial size from 0 to " << _M_max_size; return __sstream.str(); } 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 __shift, std::size_t __size) { _M_shift_count += __shift; _M_max_size = std::max(_M_max_size, __size); } 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; std::size_t _M_max_size; }; class __list2vector_stack_info : public __list2vector_info { public: __list2vector_stack_info(const __list2vector_info& __o) : __list2vector_info(__o) {} }; class __trace_list_to_vector : public __trace_base<__list2vector_info, __list2vector_stack_info> { public: __trace_list_to_vector() : __trace_base<__list2vector_info, __list2vector_stack_info>() { __id = "list-to-vector"; } ~__trace_list_to_vector() { } // Call at destruction/clean to set container final size. void __destruct(__list2vector_info* __obj_info) { float __vc = __vector_cost(__obj_info->__shift_count(), __obj_info->__iterate()); float __lc = __list_cost(__obj_info->__shift_count(), __obj_info->__iterate()); __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) { // The resulting vector will use a 'reserve' method. return (__shift * _GLIBCXX_PROFILE_DATA(__vector_shift_cost_factor).__value + __iterate * _GLIBCXX_PROFILE_DATA(__vector_iterate_cost_factor).__value); } float __list_cost(std::size_t __shift, std::size_t __iterate) { return (__shift * _GLIBCXX_PROFILE_DATA(__list_shift_cost_factor).__value + __iterate * _GLIBCXX_PROFILE_DATA(__list_iterate_cost_factor).__value); } }; inline void __trace_list_to_vector_init() { _GLIBCXX_PROFILE_DATA(_S_list_to_vector) = new __trace_list_to_vector(); } inline void __trace_list_to_vector_free() { delete _GLIBCXX_PROFILE_DATA(_S_list_to_vector); } inline void __trace_list_to_vector_report(FILE* __f, __warning_vector_t& __warnings) { __trace_report(_GLIBCXX_PROFILE_DATA(_S_list_to_vector), __f, __warnings); } inline __list2vector_info* __trace_list_to_vector_construct() { if (!__profcxx_init()) return 0; if (!__reentrance_guard::__get_in()) return 0; __reentrance_guard __get_out; return _GLIBCXX_PROFILE_DATA(_S_list_to_vector) ->__add_object(__get_stack()); } inline void __trace_list_to_vector_insert(__list2vector_info* __obj_info, std::size_t __shift, std::size_t __size) { if (!__obj_info) return; __obj_info->__opr_insert(__shift, __size); } inline void __trace_list_to_vector_iterate(__list2vector_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_list_to_vector_invalid_operator(__list2vector_info* __obj_info) { if (!__obj_info) return; __obj_info->__set_invalid(); } inline void __trace_list_to_vector_resize(__list2vector_info* __obj_info, std::size_t __from, std::size_t __to) { if (!__obj_info) return; __obj_info->__resize(__from, __to); } inline void __trace_list_to_vector_destruct(__list2vector_info* __obj_info) { if (!__obj_info) return; _GLIBCXX_PROFILE_DATA(_S_list_to_vector)->__destruct(__obj_info); } } // namespace __gnu_profile #endif /* _GLIBCXX_PROFILE_PROFILER_LIST_TO_VECTOR_H__ */