release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/include/c++/4.5.3/ext/pb_ds/detail/resize_policy/sample_resize_policy.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
   4 //
   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
   9 // version.
  10
  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.
  15
  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.
  19
  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/>.
  24
  25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  26
  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
  30 // and this permission notice appear in supporting documentation. None
  31 // of the above authors, nor IBM Haifa Research Laboratories, make any
  32 // representation about the suitability of this software for any
  33 // purpose. It is provided "as is" without express or implied
  34 // warranty.
  35
  36 /**
  37  * @file sample_resize_policy.hpp
  38  * Contains a sample resize policy for hash tables.
  39  */
  40
  41 #ifndef PB_DS_SAMPLE_RESIZE_POLICY_HPP
  42 #define PB_DS_SAMPLE_RESIZE_POLICY_HPP
  43
  44 // A sample resize policy.
  45 class sample_resize_policy
  46 {
  47 public:
  48
  49   // Size type.
  50   typedef size_t size_type;
  51
  52   // Default constructor.
  53   sample_resize_policy();
  54
  55   // Copy constructor.
  56   sample_range_hashing(const sample_resize_policy& other);
  57
  58   // Swaps content.
  59   inline void
  60   swap(sample_resize_policy& other);
  61
  62 protected:
  63
  64   // Notifies a search started.
  65   inline void
  66   notify_insert_search_start();
  67
  68   // Notifies a search encountered a collision.
  69   inline void
  70   notify_insert_search_collision();
  71
  72   // Notifies a search ended.
  73   inline void
  74   notify_insert_search_end();
  75
  76   // Notifies a search started.
  77   inline void
  78   notify_find_search_start();
  79
  80   // Notifies a search encountered a collision.
  81   inline void
  82   notify_find_search_collision();
  83
  84   // Notifies a search ended.
  85   inline void
  86   notify_find_search_end();
  87
  88   // Notifies a search started.
  89   inline void
  90   notify_erase_search_start();
  91
  92   // Notifies a search encountered a collision.
  93   inline void
  94   notify_erase_search_collision();
  95
  96   // Notifies a search ended.
  97   inline void
  98   notify_erase_search_end();
  99
 100   // Notifies an element was inserted.
 101   inline void
 102   notify_inserted(size_type num_e);
 103
 104   // Notifies an element was erased.
 105   inline void
 106   notify_erased(size_type num_e);
 107
 108   // Notifies the table was cleared.
 109   void
 110   notify_cleared();
 111
 112   // Notifies the table was resized to new_size.
 113   void
 114   notify_resized(size_type new_size);
 115
 116   // Queries whether a resize is needed.
 117   inline bool
 118   is_resize_needed() const;
 119
 120   // Queries what the new size should be.
 121   size_type
 122   get_new_size(size_type size, size_type num_used_e) const;
 123 };
 124
 125 #endif