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Diffstat (limited to 'libstdc++-v3/include/profile/impl/profiler_container_size.h')
| -rw-r--r-- | libstdc++-v3/include/profile/impl/profiler_container_size.h | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/libstdc++-v3/include/profile/impl/profiler_container_size.h b/libstdc++-v3/include/profile/impl/profiler_container_size.h new file mode 100644 index 000000000..26b2c72c2 --- /dev/null +++ b/libstdc++-v3/include/profile/impl/profiler_container_size.h @@ -0,0 +1,215 @@ +// -*- C++ -*- +// +// Copyright (C) 2009, 2010, 2011 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() + : _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) + { } + + __container_size_info(const __container_size_info& __o) + : __object_info_base(__o), _M_init(__o._M_init), _M_max(__o._M_max), + _M_min(__o._M_min), _M_total(__o._M_total), + _M_item_min(__o._M_item_min), _M_item_max(__o._M_item_max), + _M_item_total(__o._M_item_total), _M_count(__o._M_count), + _M_resize(__o._M_resize), _M_cost(__o._M_cost) + { } + + __container_size_info(__stack_t __stack, std::size_t __num) + : __object_info_base(__stack), _M_init(__num), _M_max(__num), + _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) + { } + + virtual ~__container_size_info() { } + + 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 + __merge(const __container_size_info& __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. + void + __insert(const __object_t __obj, __stack_t __stack, std::size_t __num) + { __add_object(__obj, __container_size_info(__stack, __num)); } + + // XXX Undefined? + void + __construct(const void* __obj, std::size_t __inum); + + // Call at destruction/clean to set container final size. + void + __destruct(const void* __obj, std::size_t __num, std::size_t __inum) + { + if (!__is_on()) + return; + + __object_t __obj_handle = static_cast<__object_t>(__obj); + + __container_size_info* __object_info = __get_object_info(__obj_handle); + if (!__object_info) + return; + + __object_info->__destruct(__num, __inum); + __retire_object(__obj_handle); + } + + // Call at resize to set resize/cost information. + void + __resize(const void* __obj, int __from, int __to) + { + if (!__is_on()) + return; + + __container_size_info* __object_info = __get_object_info(__obj); + if (!__object_info) + return; + + __object_info->__resize(__from, __to); + } + }; + +} // namespace __gnu_profile +#endif /* _GLIBCXX_PROFILE_PROFILER_CONTAINER_SIZE_H */ |