text: // -*- C++ -*-
  
  // Copyright (C) 2005, 2006 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 2, 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.
  
  // You should have received a copy of the GNU General Public License
  // along with this library; see the file COPYING.  If not, write to
  // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  // MA 02111-1307, USA.
  
  // As a special exception, you may use this file as part of a free
  // software library without restriction.  Specifically, if other files
  // instantiate templates or use macros or inline functions from this
  // file, or you compile this file and link it with other files to
  // produce an executable, this file does not by itself cause the
  // resulting executable to be covered by the GNU General Public
  // License.  This exception does not however invalidate any other
  // reasons why the executable file might be covered by the GNU General
  // Public License.
  
  // 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
  
  // A sample resize trigger policy.
  class sample_resize_trigger
  {
  public:
  
    // Size type.
    typedef size_t size_type;
  
    // Default constructor.
    sample_resize_trigger();
  
    // Copy constructor.
    sample_range_hashing(const sample_resize_trigger& other);
  
    // Swaps content.
    inline void
    swap(sample_resize_trigger& other);
  
  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 new_size);
  };
  
  } // namespace pb_ds
  
  #endif 
  