// -*- 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_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__ */