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// -*- C++ -*-

//

// Copyright (C) 2009, 2010 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()

    : _M_insert(0), _M_erase(0), _M_find(0), _M_iterate(0),

      _M_umap_cost(0.0), _M_map_cost(0.0), _M_valid(true) { }

    __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), _M_valid(true) { }

    virtual ~__map2umap_info() { }

    __map2umap_info(const __map2umap_info& __o)

    : __object_info_base(__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), _M_valid(__o._M_valid) { }

    void

    __merge(const __map2umap_info& __o)

    {

      _M_insert    += __o._M_insert;

      _M_erase     += __o._M_erase;

      _M_find      += __o._M_find;

      _M_umap_cost += __o._M_umap_cost;

      _M_map_cost  += __o._M_map_cost;

      _M_valid     &= __o._M_valid;

    }

    void

    __write(FILE* __f) const

    {

      std::fprintf(__f, "%Zu %Zu %Zu %Zu %.0f %.0f %s\n",

                   _M_insert, _M_erase, _M_find, _M_iterate, _M_map_cost,

                   _M_umap_cost, _M_valid ? "valid" : "invalid");

    }

    float

    __magnitude() const

    { return _M_map_cost - _M_umap_cost; }

    std::string

    __advice() const

    { return "change std::map to std::unordered_map"; }

    void

    __record_insert(std::size_t __size, std::size_t __count)

    {

      _M_insert += __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 += __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 += 1;

      _M_map_cost += __map_find_cost(__size);

      _M_umap_cost += _GLIBCXX_PROFILE_DATA(__umap_find_cost_factor).__value;

    }

    void

    __record_iterate(std::size_t __count)

    {

      _M_iterate += __count;

      _M_map_cost

        += (__count

            * _GLIBCXX_PROFILE_DATA(__map_iterate_cost_factor).__value);

      _M_umap_cost

        += (__count

            * _GLIBCXX_PROFILE_DATA(__umap_iterate_cost_factor).__value);

    }

    void

    __record_invalidate()

    { _M_valid = false; }

  private:

    std::size_t _M_insert;

    std::size_t _M_erase;

    std::size_t _M_find;

    std::size_t _M_iterate;

    float _M_umap_cost;

    float _M_map_cost;

    bool  _M_valid;

  };

  /** @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 = "map-to-unordered-map"; }

  };

  inline void

  __trace_map_to_unordered_map_init()

  { _GLIBCXX_PROFILE_DATA(_S_map2umap) = new __trace_map2umap(); }

  inline void

  __trace_map_to_unordered_map_report(FILE* __f,

                                      __warning_vector_t& __warnings)

  {

    if (_GLIBCXX_PROFILE_DATA(_S_map2umap))

      {

        _GLIBCXX_PROFILE_DATA(_S_map2umap)->__collect_warnings(__warnings);

        _GLIBCXX_PROFILE_DATA(_S_map2umap)->__write(__f);

      }

  }

  inline void

  __trace_map_to_unordered_map_construct(const void* __obj)

  {

    if (!__profcxx_init())

      return;

    _GLIBCXX_PROFILE_DATA(_S_map2umap)->

      __add_object(__obj, __map2umap_info(__get_stack()));

  }

  inline void

  __trace_map_to_unordered_map_destruct(const void* __obj)

  {

    if (!__profcxx_init())

      return;

    _GLIBCXX_PROFILE_DATA(_S_map2umap)->__retire_object(__obj);

  }

  inline void

  __trace_map_to_unordered_map_insert(const void* __obj,

                                      std::size_t __size, std::size_t __count)

  {

    if (!__profcxx_init())

      return;

    __map2umap_info* __info

      = _GLIBCXX_PROFILE_DATA(_S_map2umap)->__get_object_info(__obj);

    if (__info)

      __info->__record_insert(__size, __count);

  }

  inline void

  __trace_map_to_unordered_map_erase(const void* __obj,

                                     std::size_t __size, std::size_t __count)

  {

    if (!__profcxx_init())

      return;

    __map2umap_info* __info

      = _GLIBCXX_PROFILE_DATA(_S_map2umap)->__get_object_info(__obj);

    if (__info)

      __info->__record_erase(__size, __count);

  }

  inline void

  __trace_map_to_unordered_map_find(const void* __obj, std::size_t __size)

  {

    if (!__profcxx_init())

      return;

    __map2umap_info* __info

      = _GLIBCXX_PROFILE_DATA(_S_map2umap)->__get_object_info(__obj);

    if (__info)

      __info->__record_find(__size);

  }

  inline void

  __trace_map_to_unordered_map_iterate(const void* __obj, std::size_t __count)

  {

    if (!__profcxx_init())

      return;

    __map2umap_info* __info

      = _GLIBCXX_PROFILE_DATA(_S_map2umap)->__get_object_info(__obj);

    if (__info)

      __info->__record_iterate(__count);

  }

  inline void

  __trace_map_to_unordered_map_invalidate(const void* __obj)

  {

    if (!__profcxx_init())

      return;

    __map2umap_info* __info

      = _GLIBCXX_PROFILE_DATA(_S_map2umap)->__get_object_info(__obj);

    if (__info)

      __info->__record_invalidate();

  }

} // namespace __gnu_profile

#endif /* _GLIBCXX_PROFILE_PROFILER_MAP_TO_UNORDERED_MAP_H */