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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_map_to_unordered_map.h |
* @brief Diagnostics for map to unordered_map. |
*/ |
|
// Written by Silvius Rus. |
|
#ifndef _GLIBCXX_PROFILE_PROFILER_MAP_TO_UNORDERED_MAP_H |
#define _GLIBCXX_PROFILE_PROFILER_MAP_TO_UNORDERED_MAP_H 1 |
|
#include "profile/impl/profiler.h" |
#include "profile/impl/profiler_node.h" |
#include "profile/impl/profiler_trace.h" |
|
namespace __gnu_profile |
{ |
inline int |
__log2(std::size_t __size) |
{ |
for (int __bit_count = sizeof(std::size_t) - 1; __bit_count >= 0; |
-- __bit_count) |
if ((2 << __bit_count) & __size) |
return __bit_count; |
return 0; |
} |
|
inline float |
__map_insert_cost(std::size_t __size) |
{ return (_GLIBCXX_PROFILE_DATA(__map_insert_cost_factor).__value |
* static_cast<float>(__log2(__size))); } |
|
inline float |
__map_erase_cost(std::size_t __size) |
{ return (_GLIBCXX_PROFILE_DATA(__map_erase_cost_factor).__value |
* static_cast<float>(__log2(__size))); } |
|
inline float |
__map_find_cost(std::size_t __size) |
{ return (_GLIBCXX_PROFILE_DATA(__map_find_cost_factor).__value |
* static_cast<float>(__log2(__size))); } |
|
/** @brief A map-to-unordered_map instrumentation line in the |
object table. */ |
class __map2umap_info |
: public __object_info_base |
{ |
public: |
__map2umap_info(__stack_t __stack) |
: __object_info_base(__stack), _M_insert(0), _M_erase(0), _M_find(0), |
_M_iterate(0), _M_umap_cost(0.0), _M_map_cost(0.0) |
{ } |
|
void |
__merge(const __map2umap_info& __o) |
{ |
__object_info_base::__merge(__o); |
_M_insert += __o._M_insert; |
_M_erase += __o._M_erase; |
_M_find += __o._M_find; |
_M_iterate += __o._M_iterate; |
_M_umap_cost += __o._M_umap_cost; |
_M_map_cost += __o._M_map_cost; |
} |
|
void |
__write(FILE* __f) const |
{ |
std::fprintf(__f, "%Zu %Zu %Zu %Zu %.0f %.0f\n", |
_M_insert, _M_erase, _M_find, _M_iterate, _M_map_cost, |
_M_umap_cost); |
} |
|
float |
__magnitude() const |
{ return _M_map_cost - _M_umap_cost; } |
|
std::string |
__advice() const |
{ return "prefer an unordered container"; } |
|
void |
__record_insert(std::size_t __size, std::size_t __count) |
{ |
++_M_insert; |
if (__count) |
{ |
_M_map_cost += __count * __map_insert_cost(__size); |
_M_umap_cost |
+= (__count |
* _GLIBCXX_PROFILE_DATA(__umap_insert_cost_factor).__value); |
} |
} |
|
void |
__record_erase(std::size_t __size, std::size_t __count) |
{ |
++_M_erase; |
if (__count) |
{ |
_M_map_cost += __count * __map_erase_cost(__size); |
_M_umap_cost |
+= (__count |
* _GLIBCXX_PROFILE_DATA(__umap_erase_cost_factor).__value); |
} |
} |
|
void |
__record_find(std::size_t __size) |
{ |
++_M_find; |
_M_map_cost += __map_find_cost(__size); |
_M_umap_cost += _GLIBCXX_PROFILE_DATA(__umap_find_cost_factor).__value; |
} |
|
void |
__record_iterate(int __count) |
{ __gnu_cxx::__atomic_add(&_M_iterate, __count); } |
|
void |
__set_iterate_costs() |
{ |
_M_umap_cost |
+= (_M_iterate |
* _GLIBCXX_PROFILE_DATA(__umap_iterate_cost_factor).__value); |
_M_map_cost |
+= (_M_iterate |
* _GLIBCXX_PROFILE_DATA(__map_iterate_cost_factor).__value); |
} |
|
private: |
std::size_t _M_insert; |
std::size_t _M_erase; |
std::size_t _M_find; |
mutable _Atomic_word _M_iterate; |
float _M_umap_cost; |
float _M_map_cost; |
}; |
|
|
/** @brief A map-to-unordered_map instrumentation line in the |
stack table. */ |
class __map2umap_stack_info |
: public __map2umap_info |
{ |
public: |
__map2umap_stack_info(const __map2umap_info& __o) |
: __map2umap_info(__o) { } |
}; |
|
/** @brief Map-to-unordered_map instrumentation producer. */ |
class __trace_map2umap |
: public __trace_base<__map2umap_info, __map2umap_stack_info> |
{ |
public: |
__trace_map2umap() |
: __trace_base<__map2umap_info, __map2umap_stack_info>() |
{ __id = "ordered-to-unordered"; } |
|
// Call at destruction/clean to set container final size. |
void |
__destruct(__map2umap_info* __obj_info) |
{ |
__obj_info->__set_iterate_costs(); |
__retire_object(__obj_info); |
} |
}; |
|
inline void |
__trace_map_to_unordered_map_init() |
{ _GLIBCXX_PROFILE_DATA(_S_map2umap) = new __trace_map2umap(); } |
|
inline void |
__trace_map_to_unordered_map_free() |
{ delete _GLIBCXX_PROFILE_DATA(_S_map2umap); } |
|
inline void |
__trace_map_to_unordered_map_report(FILE* __f, |
__warning_vector_t& __warnings) |
{ __trace_report(_GLIBCXX_PROFILE_DATA(_S_map2umap), __f, __warnings); } |
|
inline __map2umap_info* |
__trace_map_to_unordered_map_construct() |
{ |
if (!__profcxx_init()) |
return 0; |
|
if (!__reentrance_guard::__get_in()) |
return 0; |
|
__reentrance_guard __get_out; |
return _GLIBCXX_PROFILE_DATA(_S_map2umap)->__add_object(__get_stack()); |
} |
|
inline void |
__trace_map_to_unordered_map_insert(__map2umap_info* __info, |
std::size_t __size, std::size_t __count) |
{ |
if (!__info) |
return; |
|
__info->__record_insert(__size, __count); |
} |
|
inline void |
__trace_map_to_unordered_map_erase(__map2umap_info* __info, |
std::size_t __size, std::size_t __count) |
{ |
if (!__info) |
return; |
|
__info->__record_erase(__size, __count); |
} |
|
inline void |
__trace_map_to_unordered_map_find(__map2umap_info* __info, |
std::size_t __size) |
{ |
if (!__info) |
return; |
|
__info->__record_find(__size); |
} |
|
inline void |
__trace_map_to_unordered_map_iterate(__map2umap_info* __info, |
int) |
{ |
if (!__info) |
return; |
|
// We only collect if an iteration took place no matter in what side. |
__info->__record_iterate(1); |
} |
|
inline void |
__trace_map_to_unordered_map_invalidate(__map2umap_info* __info) |
{ |
if (!__info) |
return; |
|
__info->__set_invalid(); |
} |
|
inline void |
__trace_map_to_unordered_map_destruct(__map2umap_info* __info) |
{ |
if (!__info) |
return; |
|
_GLIBCXX_PROFILE_DATA(_S_map2umap)->__destruct(__info); |
} |
} // namespace __gnu_profile |
#endif /* _GLIBCXX_PROFILE_PROFILER_MAP_TO_UNORDERED_MAP_H */ |