3 // Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010
4 // Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the terms
8 // of the GNU General Public License as published by the Free Software
9 // Foundation; either version 3, or (at your option) any later
12 // This library is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // Under Section 7 of GPL version 3, you are granted additional
18 // permissions described in the GCC Runtime Library Exception, version
19 // 3.1, as published by the Free Software Foundation.
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23 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 // <http://www.gnu.org/licenses/>.
26 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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29 // is hereby granted without fee, provided that the above copyright
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38 * @file sample_resize_trigger.hpp
39 * Contains a sample resize trigger policy class.
42 #ifndef PB_DS_SAMPLE_RESIZE_TRIGGER_HPP
43 #define PB_DS_SAMPLE_RESIZE_TRIGGER_HPP
47 /// A sample resize trigger policy.
48 class sample_resize_trigger
52 typedef std::size_t size_type;
54 /// Default constructor.
55 sample_resize_trigger();
58 sample_range_hashing(const sample_resize_trigger&);
62 swap(sample_resize_trigger&);
65 /// Notifies a search started.
67 notify_insert_search_start();
69 /// Notifies a search encountered a collision.
71 notify_insert_search_collision();
73 /// Notifies a search ended.
75 notify_insert_search_end();
77 /// Notifies a search started.
79 notify_find_search_start();
81 /// Notifies a search encountered a collision.
83 notify_find_search_collision();
85 /// Notifies a search ended.
87 notify_find_search_end();
89 /// Notifies a search started.
91 notify_erase_search_start();
93 /// Notifies a search encountered a collision.
95 notify_erase_search_collision();
97 /// Notifies a search ended.
99 notify_erase_search_end();
101 /// Notifies an element was inserted. the total number of entries in
102 /// the table is num_entries.
104 notify_inserted(size_type num_entries);
106 /// Notifies an element was erased.
108 notify_erased(size_type num_entries);
110 /// Notifies the table was cleared.
114 /// Notifies the table was resized as a result of this object's
115 /// signifying that a resize is needed.
117 notify_resized(size_type new_size);
119 /// Notifies the table was resized externally.
121 notify_externally_resized(size_type new_size);
123 /// Queries whether a resize is needed.
125 is_resize_needed() const;
127 /// Queries whether a grow is needed.
129 is_grow_needed(size_type size, size_type num_entries) const;
132 /// Resizes to new_size.
134 do_resize(size_type);