profile/map.h

Go to the documentation of this file.

// Profiling map implementation -*- C++ -*-

// Copyright (C) 2009, 2010, 2011 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/map.h
 *  This file is a GNU profile extension to the Standard C++ Library.
 */

#ifndef _GLIBCXX_PROFILE_MAP_H
#define _GLIBCXX_PROFILE_MAP_H 1

#include <utility>
#include <profile/base.h>

namespace std _GLIBCXX_VISIBILITY(default)
{
namespace __profile
{
  /// Class std::map wrapper with performance instrumentation.
  template<typename _Key, typename _Tp, typename _Compare = std::less<_Key>,
       typename _Allocator = std::allocator<std::pair<const _Key, _Tp> > >
    class map
    : public _GLIBCXX_STD_C::map<_Key, _Tp, _Compare, _Allocator>
    {
      typedef _GLIBCXX_STD_C::map<_Key, _Tp, _Compare, _Allocator> _Base;

    public:
      // types:
      typedef _Key                                  key_type;
      typedef _Tp                                   mapped_type;
      typedef std::pair<const _Key, _Tp>            value_type;
      typedef _Compare                              key_compare;
      typedef _Allocator                            allocator_type;
      typedef typename _Base::reference             reference;
      typedef typename _Base::const_reference       const_reference;

      typedef typename _Base::iterator       iterator;
      typedef typename _Base::const_iterator       const_iterator;
      typedef typename _Base::size_type             size_type;
      typedef typename _Base::difference_type       difference_type;
      typedef typename _Base::pointer               pointer;
      typedef typename _Base::const_pointer         const_pointer;
      typedef std::reverse_iterator<iterator>       reverse_iterator;
      typedef std::reverse_iterator<const_iterator> const_reverse_iterator;

      // 23.3.1.1 construct/copy/destroy:
      explicit
      map(const _Compare& __comp = _Compare(),
      const _Allocator& __a = _Allocator())
      : _Base(__comp, __a)
      { __profcxx_map_to_unordered_map_construct(this); }

      template<typename _InputIterator>
        map(_InputIterator __first, _InputIterator __last,
        const _Compare& __comp = _Compare(),
        const _Allocator& __a = _Allocator())
    : _Base(__first, __last, __comp, __a)
        { __profcxx_map_to_unordered_map_construct(this); }

      map(const map& __x)
      : _Base(__x)
      { __profcxx_map_to_unordered_map_construct(this); }

      map(const _Base& __x)
      : _Base(__x)
      { __profcxx_map_to_unordered_map_construct(this); }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      map(map&& __x)
      : _Base(std::move(__x))
      { }

      map(initializer_list<value_type> __l,
      const _Compare& __c = _Compare(),
      const allocator_type& __a = allocator_type())
      : _Base(__l, __c, __a) { }
#endif

      ~map()
      { __profcxx_map_to_unordered_map_destruct(this); }

      map&
      operator=(const map& __x)
      {
    *static_cast<_Base*>(this) = __x;
    return *this;
      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      map&
      operator=(map&& __x)
      {
    // NB: DR 1204.
    // NB: DR 675.
    this->clear();
    this->swap(__x);
    return *this;
      }

      map&
      operator=(initializer_list<value_type> __l)
      {
    this->clear();
    this->insert(__l);
    return *this;
      }
#endif

      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 133. map missing get_allocator()
      using _Base::get_allocator;

      // iterators:
      iterator 
      begin()
      { return _Base::begin(); }

      const_iterator
      begin() const
      { return _Base::begin(); }

      iterator
      end()
      { return _Base::end(); }

      const_iterator
      end() const
      { return _Base::end(); }

      reverse_iterator
      rbegin()
      { 
        __profcxx_map_to_unordered_map_invalidate(this);
        return reverse_iterator(end()); 
      }

      const_reverse_iterator
      rbegin() const
      {
        __profcxx_map_to_unordered_map_invalidate(this);
        return const_reverse_iterator(end());
      }

      reverse_iterator
      rend()
      {
        __profcxx_map_to_unordered_map_invalidate(this);
        return reverse_iterator(begin());
      }

      const_reverse_iterator
      rend() const
      {
        __profcxx_map_to_unordered_map_invalidate(this);
        return const_reverse_iterator(begin());
      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      const_iterator
      cbegin() const
      { return const_iterator(_Base::begin()); }

      const_iterator
      cend() const
      { return const_iterator(_Base::end()); }

      const_reverse_iterator
      crbegin() const
      {
        __profcxx_map_to_unordered_map_invalidate(this);
        return const_reverse_iterator(end());
      }

      const_reverse_iterator
      crend() const
      {
        __profcxx_map_to_unordered_map_invalidate(this);
        return const_reverse_iterator(begin());
      }
#endif

      // capacity:
      using _Base::empty;
      using _Base::size;
      using _Base::max_size;

      // 23.3.1.2 element access:
      mapped_type&
      operator[](const key_type& __k)
      {
        __profcxx_map_to_unordered_map_find(this, size());
        return _Base::operator[](__k);
      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      mapped_type&
      operator[](key_type&& __k)
      {
        __profcxx_map_to_unordered_map_find(this, size());
        return _Base::operator[](std::move(__k));
      }
#endif

      mapped_type&
      at(const key_type& __k)
      {
        __profcxx_map_to_unordered_map_find(this, size());
        return _Base::at(__k);
      }

      const mapped_type&
      at(const key_type& __k) const
      {
        __profcxx_map_to_unordered_map_find(this, size());
        return _Base::at(__k);
      }

      // modifiers:
      std::pair<iterator, bool>
      insert(const value_type& __x)
      {
        __profcxx_map_to_unordered_map_insert(this, size(), 1);
    typedef typename _Base::iterator _Base_iterator;
    std::pair<_Base_iterator, bool> __res = _Base::insert(__x);
    return std::pair<iterator, bool>(iterator(__res.first),
                     __res.second);
      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      template<typename _Pair, typename = typename
           std::enable_if<std::is_convertible<_Pair,
                          value_type>::value>::type>
        std::pair<iterator, bool>
        insert(_Pair&& __x)
        {
      __profcxx_map_to_unordered_map_insert(this, size(), 1);
      typedef typename _Base::iterator _Base_iterator;
      std::pair<_Base_iterator, bool> __res
        = _Base::insert(std::forward<_Pair>(__x));
      return std::pair<iterator, bool>(iterator(__res.first),
                       __res.second);
    }
#endif

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      void
      insert(std::initializer_list<value_type> __list)
      { 
        size_type size_before = size();
        _Base::insert(__list); 
        __profcxx_map_to_unordered_map_insert(this, size_before, 
                          size() - size_before);
      }
#endif

      iterator
#ifdef __GXX_EXPERIMENTAL_CXX0X__
      insert(const_iterator __position, const value_type& __x)
#else
      insert(iterator __position, const value_type& __x)
#endif
      {
        size_type size_before = size();
    iterator __i = iterator(_Base::insert(__position, __x));
        __profcxx_map_to_unordered_map_insert(this, size_before, 
                          size() - size_before);
    return __i;
      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      template<typename _Pair, typename = typename
           std::enable_if<std::is_convertible<_Pair,
                          value_type>::value>::type>
        iterator
        insert(const_iterator __position, _Pair&& __x)
        {
      size_type size_before = size();
      iterator __i
        = iterator(_Base::insert(__position, std::forward<_Pair>(__x)));
      __profcxx_map_to_unordered_map_insert(this, size_before, 
                        size() - size_before);
      return __i;
      }
#endif

      template<typename _InputIterator>
        void
        insert(_InputIterator __first, _InputIterator __last)
        {
          size_type size_before = size();
      _Base::insert(__first, __last);
          __profcxx_map_to_unordered_map_insert(this, size_before, 
                                                size() - size_before);
    }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      iterator
      erase(const_iterator __position)
      {
    iterator __i = _Base::erase(__position);
        __profcxx_map_to_unordered_map_erase(this, size(), 1);
        return __i;
      }

      iterator
      erase(iterator __position)
      { return erase(const_iterator(__position)); }
#else
      void
      erase(iterator __position)
      {
    _Base::erase(__position);
        __profcxx_map_to_unordered_map_erase(this, size(), 1);
      }
#endif

      size_type
      erase(const key_type& __x)
      {
    iterator __victim = find(__x);
    if (__victim == end())
      return 0;
    else
    {
      _Base::erase(__victim);
      return 1;
    }
      }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
      iterator
      erase(const_iterator __first, const_iterator __last)
      { return iterator(_Base::erase(__first, __last)); }
#else
      void
      erase(iterator __first, iterator __last)
      { _Base::erase(__first, __last); }
#endif

      void

      swap(map& __x)
      { _Base::swap(__x); }

      void
      clear()
      { this->erase(begin(), end()); }

      // observers:
      using _Base::key_comp;
      using _Base::value_comp;

      // 23.3.1.3 map operations:
      iterator
      find(const key_type& __x)
      {
        __profcxx_map_to_unordered_map_find(this, size());
        return iterator(_Base::find(__x));
      }

      const_iterator
      find(const key_type& __x) const
      {
        __profcxx_map_to_unordered_map_find(this, size());
        return const_iterator(_Base::find(__x));
      }

      size_type
      count(const key_type& __x) const
      {
        __profcxx_map_to_unordered_map_find(this, size());
        return _Base::count(__x);
      }

      iterator
      lower_bound(const key_type& __x)
      { 
        __profcxx_map_to_unordered_map_invalidate(this);
        return iterator(_Base::lower_bound(__x)); 
      }

      const_iterator
      lower_bound(const key_type& __x) const
      { 
        __profcxx_map_to_unordered_map_invalidate(this);
        return const_iterator(_Base::lower_bound(__x)); 
      }

      iterator
      upper_bound(const key_type& __x)
      { 
        __profcxx_map_to_unordered_map_invalidate(this);
        return iterator(_Base::upper_bound(__x)); 
      }

      const_iterator
      upper_bound(const key_type& __x) const
      { 
        __profcxx_map_to_unordered_map_invalidate(this);
        return const_iterator(_Base::upper_bound(__x)); 
      }

      std::pair<iterator,iterator>
      equal_range(const key_type& __x)
      {
    typedef typename _Base::iterator _Base_iterator;
    std::pair<_Base_iterator, _Base_iterator> __res =
    _Base::equal_range(__x);
    return std::make_pair(iterator(__res.first),
                  iterator(__res.second));
      }

      std::pair<const_iterator,const_iterator>
      equal_range(const key_type& __x) const
      {
        __profcxx_map_to_unordered_map_find(this, size());
    typedef typename _Base::const_iterator _Base_const_iterator;
    std::pair<_Base_const_iterator, _Base_const_iterator> __res =
    _Base::equal_range(__x);
    return std::make_pair(const_iterator(__res.first),
                  const_iterator(__res.second));
      }

      _Base& 
      _M_base() { return *this; }

      const _Base&
      _M_base() const { return *this; }

    };

  template<typename _Key, typename _Tp,
       typename _Compare, typename _Allocator>
    inline bool
    operator==(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
           const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    { 
      __profcxx_map_to_unordered_map_invalidate(&__lhs);
      __profcxx_map_to_unordered_map_invalidate(&__rhs);
      return __lhs._M_base() == __rhs._M_base(); 
    }

  template<typename _Key, typename _Tp,
       typename _Compare, typename _Allocator>
    inline bool
    operator!=(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
           const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    { 
      __profcxx_map_to_unordered_map_invalidate(&__lhs);
      __profcxx_map_to_unordered_map_invalidate(&__rhs);
      return __lhs._M_base() != __rhs._M_base(); 
    }

  template<typename _Key, typename _Tp,
       typename _Compare, typename _Allocator>
    inline bool
    operator<(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
          const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    {
      __profcxx_map_to_unordered_map_invalidate(&__lhs);
      __profcxx_map_to_unordered_map_invalidate(&__rhs);
      return __lhs._M_base() < __rhs._M_base(); 
    }

  template<typename _Key, typename _Tp,
       typename _Compare, typename _Allocator>
    inline bool
    operator<=(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
           const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    {
      __profcxx_map_to_unordered_map_invalidate(&__lhs);
      __profcxx_map_to_unordered_map_invalidate(&__rhs);
      return __lhs._M_base() <= __rhs._M_base();
    }

  template<typename _Key, typename _Tp,
       typename _Compare, typename _Allocator>
    inline bool
    operator>=(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
           const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    {
      __profcxx_map_to_unordered_map_invalidate(&__lhs);
      __profcxx_map_to_unordered_map_invalidate(&__rhs);
      return __lhs._M_base() >= __rhs._M_base();
    }

  template<typename _Key, typename _Tp,
       typename _Compare, typename _Allocator>
    inline bool
    operator>(const map<_Key, _Tp, _Compare, _Allocator>& __lhs,
          const map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    {
      __profcxx_map_to_unordered_map_invalidate(&__lhs);
      __profcxx_map_to_unordered_map_invalidate(&__rhs);
      return __lhs._M_base() > __rhs._M_base();
    }

  template<typename _Key, typename _Tp,
       typename _Compare, typename _Allocator>
    inline void
    swap(map<_Key, _Tp, _Compare, _Allocator>& __lhs,
     map<_Key, _Tp, _Compare, _Allocator>& __rhs)
    { __lhs.swap(__rhs); }

} // namespace __profile
} // namespace std

#endif