3 // Copyright (C) 2005-2015 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the terms
7 // of the GNU General Public License as published by the Free Software
8 // Foundation; either version 3, or (at your option) any later
11 // This library is distributed in the hope that it will be useful, but
12 // WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
27 // Permission to use, copy, modify, sell, and distribute this software
28 // is hereby granted without fee, provided that the above copyright
29 // notice appears in all copies, and that both that copyright notice
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37 * @file sample_resize_trigger.hpp
38 * Contains a sample resize trigger policy class.
41 #ifndef PB_DS_SAMPLE_RESIZE_TRIGGER_HPP
42 #define PB_DS_SAMPLE_RESIZE_TRIGGER_HPP
46 /// A sample resize trigger policy.
47 class sample_resize_trigger
51 typedef std::size_t size_type;
53 /// Default constructor.
54 sample_resize_trigger();
57 sample_range_hashing(const sample_resize_trigger&);
61 swap(sample_resize_trigger&);
64 /// Notifies a search started.
66 notify_insert_search_start();
68 /// Notifies a search encountered a collision.
70 notify_insert_search_collision();
72 /// Notifies a search ended.
74 notify_insert_search_end();
76 /// Notifies a search started.
78 notify_find_search_start();
80 /// Notifies a search encountered a collision.
82 notify_find_search_collision();
84 /// Notifies a search ended.
86 notify_find_search_end();
88 /// Notifies a search started.
90 notify_erase_search_start();
92 /// Notifies a search encountered a collision.
94 notify_erase_search_collision();
96 /// Notifies a search ended.
98 notify_erase_search_end();
100 /// Notifies an element was inserted. the total number of entries in
101 /// the table is num_entries.
103 notify_inserted(size_type num_entries);
105 /// Notifies an element was erased.
107 notify_erased(size_type num_entries);
109 /// Notifies the table was cleared.
113 /// Notifies the table was resized as a result of this object's
114 /// signifying that a resize is needed.
116 notify_resized(size_type new_size);
118 /// Notifies the table was resized externally.
120 notify_externally_resized(size_type new_size);
122 /// Queries whether a resize is needed.
124 is_resize_needed() const;
126 /// Queries whether a grow is needed.
128 is_grow_needed(size_type size, size_type num_entries) const;
131 /// Resizes to new_size.
133 do_resize(size_type);