| // -*- C++ -*- |
| // |
| // Copyright (C) 2009-2016 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_container_size.h |
| * @brief Diagnostics for container sizes. |
| */ |
| |
| // Written by Lixia Liu and Silvius Rus. |
| |
| #ifndef _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H |
| #define _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_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 container size instrumentation line in the object table. */ |
| class __container_size_info |
| : public __object_info_base |
| { |
| public: |
| __container_size_info(__stack_t __stack) |
| : __object_info_base(__stack), _M_init(0), _M_max(0), |
| _M_min(0), _M_total(0), _M_item_min(0), _M_item_max(0), |
| _M_item_total(0), _M_count(0), _M_resize(0), _M_cost(0) |
| { } |
| |
| void |
| __write(FILE* __f) const |
| { |
| std::fprintf(__f, "%Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu %Zu\n", |
| _M_init, _M_count, _M_cost, _M_resize, _M_min, _M_max, |
| _M_total, _M_item_min, _M_item_max, _M_item_total); |
| } |
| |
| float |
| __magnitude() const |
| { return static_cast<float>(_M_cost); } |
| |
| std::string |
| __advice() const |
| { |
| std::stringstream __message; |
| if (_M_init < _M_item_max) |
| __message << "change initial container size from " << _M_init |
| << " to " << _M_item_max; |
| return __message.str(); |
| } |
| |
| void |
| __init(std::size_t __num) |
| { |
| _M_init = __num; |
| _M_max = __num; |
| } |
| |
| void |
| __merge(const __container_size_info& __o) |
| { |
| __object_info_base::__merge(__o); |
| _M_init = std::max(_M_init, __o._M_init); |
| _M_max = std::max(_M_max, __o._M_max); |
| _M_item_max = std::max(_M_item_max, __o._M_item_max); |
| _M_min = std::min(_M_min, __o._M_min); |
| _M_item_min = std::min(_M_item_min, __o._M_item_min); |
| _M_total += __o._M_total; |
| _M_item_total += __o._M_item_total; |
| _M_count += __o._M_count; |
| _M_cost += __o._M_cost; |
| _M_resize += __o._M_resize; |
| } |
| |
| // Call if a container is destructed or cleaned. |
| void |
| __destruct(std::size_t __num, std::size_t __inum) |
| { |
| _M_max = std::max(_M_max, __num); |
| _M_item_max = std::max(_M_item_max, __inum); |
| if (_M_min == 0) |
| { |
| _M_min = __num; |
| _M_item_min = __inum; |
| } |
| else |
| { |
| _M_min = std::min(_M_min, __num); |
| _M_item_min = std::min(_M_item_min, __inum); |
| } |
| |
| _M_total += __num; |
| _M_item_total += __inum; |
| _M_count += 1; |
| } |
| |
| // Estimate the cost of resize/rehash. |
| float |
| __resize_cost(std::size_t __from, std::size_t) |
| { return __from; } |
| |
| // Call if container is resized. |
| void |
| __resize(std::size_t __from, std::size_t __to) |
| { |
| _M_cost += this->__resize_cost(__from, __to); |
| _M_resize += 1; |
| _M_max = std::max(_M_max, __to); |
| } |
| |
| private: |
| std::size_t _M_init; |
| std::size_t _M_max; // range of # buckets |
| std::size_t _M_min; |
| std::size_t _M_total; |
| std::size_t _M_item_min; // range of # items |
| std::size_t _M_item_max; |
| std::size_t _M_item_total; |
| std::size_t _M_count; |
| std::size_t _M_resize; |
| std::size_t _M_cost; |
| }; |
| |
| /** @brief A container size instrumentation line in the stack table. */ |
| class __container_size_stack_info |
| : public __container_size_info |
| { |
| public: |
| __container_size_stack_info(const __container_size_info& __o) |
| : __container_size_info(__o) { } |
| }; |
| |
| /** @brief Container size instrumentation trace producer. */ |
| class __trace_container_size |
| : public __trace_base<__container_size_info, __container_size_stack_info> |
| { |
| public: |
| ~__trace_container_size() { } |
| |
| __trace_container_size() |
| : __trace_base<__container_size_info, __container_size_stack_info>() { }; |
| |
| // Insert a new node at construct with object, callstack and initial size. |
| __container_size_info* |
| __insert(__stack_t __stack, std::size_t __num) |
| { |
| __container_size_info* __ret = __add_object(__stack); |
| if (__ret) |
| __ret->__init(__num); |
| return __ret; |
| } |
| |
| // Call at destruction/clean to set container final size. |
| void |
| __destruct(__container_size_info* __obj_info, |
| std::size_t __num, std::size_t __inum) |
| { |
| __obj_info->__destruct(__num, __inum); |
| __retire_object(__obj_info); |
| } |
| }; |
| |
| } // namespace __gnu_profile |
| #endif /* _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H */ |