profiler_list_to_slist.h
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// -*- C++ -*-
//
// Copyright (C) 2009-2013 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_slist.h
* @brief Diagnostics for list to slist.
*/
// Written by Changhee Jung.
#ifndef _GLIBCXX_PROFILE_PROFILER_LIST_TO_SLIST_H
#define _GLIBCXX_PROFILE_PROFILER_LIST_TO_SLIST_H 1
#include "profile/impl/profiler.h"
#include "profile/impl/profiler_node.h"
#include "profile/impl/profiler_trace.h"
namespace __gnu_profile
{
class __list2slist_info
: public __object_info_base
{
public:
__list2slist_info()
: _M_rewind(false), _M_operations(0) { }
__list2slist_info(__stack_t __stack)
: __object_info_base(__stack), _M_rewind(false), _M_operations(0) { }
virtual ~__list2slist_info() { }
__list2slist_info(const __list2slist_info& __o)
: __object_info_base(__o), _M_rewind(__o._M_rewind),
_M_operations(__o._M_operations) { }
// XXX: the magnitude should be multiplied with a constant factor F,
// where F is 1 when the malloc size class of list nodes is different
// from the malloc size class of slist nodes. When they fall into the same
// class, the only slist benefit is from having to set fewer links, so
// the factor F should be much smaller, closer to 0 than to 1.
// This could be implemented by passing the size classes in the config
// file. For now, we always assume F to be 1.
float
__magnitude() const
{
if (!_M_rewind)
return _M_operations;
else
return 0;
}
void
__merge(const __list2slist_info&) { }
void
__write(FILE* __f) const
{ std::fprintf(__f, "%s\n", _M_rewind ? "invalid" : "valid"); }
std::string
__advice() const
{ return "change std::list to std::forward_list"; }
void
__opr_rewind()
{
_M_rewind = true;
_M_valid = false;
}
void
__record_operation()
{ ++_M_operations; }
bool
__has_rewind()
{ return _M_rewind; }
private:
bool _M_rewind;
std::size_t _M_operations;
};
class __list2slist_stack_info
: public __list2slist_info
{
public:
__list2slist_stack_info(const __list2slist_info& __o)
: __list2slist_info(__o) { }
};
class __trace_list_to_slist
: public __trace_base<__list2slist_info, __list2slist_stack_info>
{
public:
~__trace_list_to_slist() { }
__trace_list_to_slist()
: __trace_base<__list2slist_info, __list2slist_stack_info>()
{ __id = "list-to-slist"; }
void
__opr_rewind(const void* __obj)
{
__list2slist_info* __res = __get_object_info(__obj);
if (__res)
__res->__opr_rewind();
}
void
__record_operation(const void* __obj)
{
__list2slist_info* __res = __get_object_info(__obj);
if (__res)
__res->__record_operation();
}
void
__insert(const __object_t __obj, __stack_t __stack)
{ __add_object(__obj, __list2slist_info(__stack)); }
void
__destruct(const void* __obj)
{
if (!__is_on())
return;
__list2slist_info* __res = __get_object_info(__obj);
if (!__res)
return;
__retire_object(__obj);
}
};
inline void
__trace_list_to_slist_init()
{ _GLIBCXX_PROFILE_DATA(_S_list_to_slist) = new __trace_list_to_slist(); }
inline void
__trace_list_to_slist_report(FILE* __f, __warning_vector_t& __warnings)
{
if (_GLIBCXX_PROFILE_DATA(_S_list_to_slist))
{
_GLIBCXX_PROFILE_DATA(_S_list_to_slist)->
__collect_warnings(__warnings);
_GLIBCXX_PROFILE_DATA(_S_list_to_slist)->__write(__f);
}
}
inline void
__trace_list_to_slist_rewind(const void* __obj)
{
if (!__profcxx_init())
return;
_GLIBCXX_PROFILE_DATA(_S_list_to_slist)->__opr_rewind(__obj);
}
inline void
__trace_list_to_slist_operation(const void* __obj)
{
if (!__profcxx_init())
return;
_GLIBCXX_PROFILE_DATA(_S_list_to_slist)->__record_operation(__obj);
}
inline void
__trace_list_to_slist_construct(const void* __obj)
{
if (!__profcxx_init())
return;
_GLIBCXX_PROFILE_DATA(_S_list_to_slist)->__insert(__obj, __get_stack());
}
inline void
__trace_list_to_slist_destruct(const void* __obj)
{
if (!__profcxx_init())
return;
_GLIBCXX_PROFILE_DATA(_S_list_to_slist)->__destruct(__obj);
}
} // namespace __gnu_profile
#endif /* _GLIBCXX_PROFILE_PROFILER_LIST_TO_SLIST_H */