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// -*- C++ -*- |
// |
// Copyright (C) 2009-2015 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 */ |