text: // -*- C++ -*-
  
  // Copyright (C) 2005-2014 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 and
  // a copy of the GCC Runtime Library Exception along with this program;
  // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  // <http://www.gnu.org/licenses/>.
  
  // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  
  // Permission to use, copy, modify, sell, and distribute this software
  // is hereby granted without fee, provided that the above copyright
  // notice appears in all copies, and that both that copyright notice
  // and this permission notice appear in supporting documentation. None
  // of the above authors, nor IBM Haifa Research Laboratories, make any
  // representation about the suitability of this software for any
  // purpose. It is provided "as is" without express or implied
  // warranty.
  
  /**
   * @file sample_resize_trigger.hpp
   * Contains a sample resize trigger policy class.
   */
  
  #ifndef PB_DS_SAMPLE_RESIZE_TRIGGER_HPP
  #define PB_DS_SAMPLE_RESIZE_TRIGGER_HPP
  
  namespace __gnu_pbds
  {
    /// A sample resize trigger policy.
    class sample_resize_trigger
    {
    public:
      /// Size type.
      typedef std::size_t size_type;
  
      /// Default constructor.
      sample_resize_trigger();
  
      /// Copy constructor.
      sample_range_hashing(const sample_resize_trigger&);
  
      /// Swaps content.
      inline void
      swap(sample_resize_trigger&);
  
    protected:
      /// Notifies a search started.
      inline void
      notify_insert_search_start();
  
      /// Notifies a search encountered a collision.
      inline void
      notify_insert_search_collision();
  
      /// Notifies a search ended.
      inline void
      notify_insert_search_end();
  
      /// Notifies a search started.
      inline void
      notify_find_search_start();
  
      /// Notifies a search encountered a collision.
      inline void
      notify_find_search_collision();
  
      /// Notifies a search ended.
      inline void
      notify_find_search_end();
  
      /// Notifies a search started.
      inline void
      notify_erase_search_start();
  
      /// Notifies a search encountered a collision.
      inline void
      notify_erase_search_collision();
  
      /// Notifies a search ended.
      inline void
      notify_erase_search_end();
  
      /// Notifies an element was inserted. the total number of entries in
      /// the table is num_entries.
      inline void
      notify_inserted(size_type num_entries);
  
      /// Notifies an element was erased.
      inline void
      notify_erased(size_type num_entries);
  
      /// Notifies the table was cleared.
      void
      notify_cleared();
  
      /// Notifies the table was resized as a result of this object's
      /// signifying that a resize is needed.
      void
      notify_resized(size_type new_size);
  
      /// Notifies the table was resized externally.
      void
      notify_externally_resized(size_type new_size);
  
      /// Queries whether a resize is needed.
      inline bool
      is_resize_needed() const;
  
      /// Queries whether a grow is needed.
      inline bool
      is_grow_needed(size_type size, size_type num_entries) const;
  
    private:
      /// Resizes to new_size.
      virtual void
      do_resize(size_type);
    };
  }
  #endif
  