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// -*- 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;
public:
// 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 // #ifndef PB_DS_SAMPLE_RESIZE_TRIGGER_HPP
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