| 1 |
20 |
jlechner |
/**
|
| 2 |
|
|
* @file sample_resize_policy.hpp
|
| 3 |
|
|
* Contains a sample resize policy for hash tables.
|
| 4 |
|
|
*
|
| 5 |
|
|
* Copyright Ami Tavory, IBM-HRL, 2004.
|
| 6 |
|
|
*
|
| 7 |
|
|
* Permission to use, copy, modify, sell, and distribute this software
|
| 8 |
|
|
* is hereby granted without fee, provided that the above copyright notice
|
| 9 |
|
|
* appears in all copies, and that both that copyright notice and this
|
| 10 |
|
|
* permission notice appear in supporting documentation,
|
| 11 |
|
|
*
|
| 12 |
|
|
* None of the above authors, nor IBM Haifa Research Laboratories, make any
|
| 13 |
|
|
* representation about the suitability of this software for any
|
| 14 |
|
|
* purpose. It is provided "as is" without express or implied warranty.
|
| 15 |
|
|
**/
|
| 16 |
|
|
|
| 17 |
|
|
|
| 18 |
|
|
#ifndef SAMPLE_RESIZE_POLICY_HPP
|
| 19 |
|
|
#define SAMPLE_RESIZE_POLICY_HPP
|
| 20 |
|
|
|
| 21 |
|
|
|
| 22 |
|
|
/**
|
| 23 |
|
|
* <class
|
| 24 |
|
|
* description = "A sample resize policy."
|
| 25 |
|
|
* comment = "This class serves to show the interface a resize policy
|
| 26 |
|
|
* needs to support.">
|
| 27 |
|
|
**/
|
| 28 |
|
|
class sample_resize_policy
|
| 29 |
|
|
{
|
| 30 |
|
|
/**
|
| 31 |
|
|
*******************************************************************************
|
| 32 |
|
|
*******************************************************************************
|
| 33 |
|
|
* <public_methods_group>
|
| 34 |
|
|
**/
|
| 35 |
|
|
public:
|
| 36 |
|
|
/**
|
| 37 |
|
|
***************************************************************************
|
| 38 |
|
|
***************************************************************************
|
| 39 |
|
|
** <group description = "Constructors, destructor, and related.">
|
| 40 |
|
|
**/
|
| 41 |
|
|
|
| 42 |
|
|
/*
|
| 43 |
|
|
* <fn description = "Default constructor."
|
| 44 |
|
|
* comment = "Must be default constructible.">
|
| 45 |
|
|
**/
|
| 46 |
|
|
sample_resize_policy
|
| 47 |
|
|
();
|
| 48 |
|
|
/** </fn> **/
|
| 49 |
|
|
|
| 50 |
|
|
/*
|
| 51 |
|
|
* <fn description = "Copy constructor."
|
| 52 |
|
|
* comment = "Must be copy constructible.">
|
| 53 |
|
|
**/
|
| 54 |
|
|
sample_range_hashing
|
| 55 |
|
|
(const sample_resize_policy &r_other);
|
| 56 |
|
|
/** </fn> **/
|
| 57 |
|
|
|
| 58 |
|
|
/*
|
| 59 |
|
|
* <fn description = "Swaps content."
|
| 60 |
|
|
* comment = "Must be swappable (if there is such a word).">
|
| 61 |
|
|
**/
|
| 62 |
|
|
inline void
|
| 63 |
|
|
swap
|
| 64 |
|
|
(sample_resize_policy &r_other);
|
| 65 |
|
|
/** </fn> **/
|
| 66 |
|
|
|
| 67 |
|
|
/*
|
| 68 |
|
|
***************************************************************************
|
| 69 |
|
|
***************************************************************************
|
| 70 |
|
|
* </group>
|
| 71 |
|
|
**/
|
| 72 |
|
|
|
| 73 |
|
|
|
| 74 |
|
|
/**
|
| 75 |
|
|
*******************************************************************************
|
| 76 |
|
|
*******************************************************************************
|
| 77 |
|
|
* </public_methods_group>
|
| 78 |
|
|
**/
|
| 79 |
|
|
|
| 80 |
|
|
|
| 81 |
|
|
/**
|
| 82 |
|
|
*******************************************************************************
|
| 83 |
|
|
*******************************************************************************
|
| 84 |
|
|
* <protected_methods_group>
|
| 85 |
|
|
**/
|
| 86 |
|
|
protected:
|
| 87 |
|
|
/**
|
| 88 |
|
|
***************************************************************************
|
| 89 |
|
|
***************************************************************************
|
| 90 |
|
|
** <group description = "Insert search notifications."
|
| 91 |
|
|
** comment = "Notifications called during an insert operation.">
|
| 92 |
|
|
**/
|
| 93 |
|
|
|
| 94 |
|
|
/*
|
| 95 |
|
|
* <fn description = "Notifies a search started.">
|
| 96 |
|
|
**/
|
| 97 |
|
|
inline void
|
| 98 |
|
|
notify_insert_search_start
|
| 99 |
|
|
();
|
| 100 |
|
|
/** </fn> **/
|
| 101 |
|
|
|
| 102 |
|
|
/*
|
| 103 |
|
|
* <fn description = "Notifies a search encountered a collision.">
|
| 104 |
|
|
**/
|
| 105 |
|
|
inline void
|
| 106 |
|
|
notify_insert_search_collision
|
| 107 |
|
|
();
|
| 108 |
|
|
/** </fn> **/
|
| 109 |
|
|
|
| 110 |
|
|
/*
|
| 111 |
|
|
* <fn description = "Notifies a search ended.">
|
| 112 |
|
|
**/
|
| 113 |
|
|
inline void
|
| 114 |
|
|
notify_insert_search_end
|
| 115 |
|
|
();
|
| 116 |
|
|
/** </fn> **/
|
| 117 |
|
|
|
| 118 |
|
|
/*
|
| 119 |
|
|
***************************************************************************
|
| 120 |
|
|
***************************************************************************
|
| 121 |
|
|
* </group>
|
| 122 |
|
|
**/
|
| 123 |
|
|
|
| 124 |
|
|
|
| 125 |
|
|
/**
|
| 126 |
|
|
***************************************************************************
|
| 127 |
|
|
***************************************************************************
|
| 128 |
|
|
** <group description = "Find search notifications."
|
| 129 |
|
|
** comment = "Notifications called during a find operation.">
|
| 130 |
|
|
**/
|
| 131 |
|
|
|
| 132 |
|
|
/*
|
| 133 |
|
|
* <fn description = "Notifies a search started.">
|
| 134 |
|
|
**/
|
| 135 |
|
|
inline void
|
| 136 |
|
|
notify_find_search_start
|
| 137 |
|
|
();
|
| 138 |
|
|
/** </fn> **/
|
| 139 |
|
|
|
| 140 |
|
|
/*
|
| 141 |
|
|
* <fn description = "Notifies a search encountered a collision.">
|
| 142 |
|
|
**/
|
| 143 |
|
|
inline void
|
| 144 |
|
|
notify_find_search_collision
|
| 145 |
|
|
();
|
| 146 |
|
|
/** </fn> **/
|
| 147 |
|
|
|
| 148 |
|
|
/*
|
| 149 |
|
|
* <fn description = "Notifies a search ended.">
|
| 150 |
|
|
**/
|
| 151 |
|
|
inline void
|
| 152 |
|
|
notify_find_search_end
|
| 153 |
|
|
();
|
| 154 |
|
|
/** </fn> **/
|
| 155 |
|
|
|
| 156 |
|
|
/*
|
| 157 |
|
|
***************************************************************************
|
| 158 |
|
|
***************************************************************************
|
| 159 |
|
|
* </group>
|
| 160 |
|
|
**/
|
| 161 |
|
|
|
| 162 |
|
|
|
| 163 |
|
|
/**
|
| 164 |
|
|
***************************************************************************
|
| 165 |
|
|
***************************************************************************
|
| 166 |
|
|
** <group description = "Erase search notifications."
|
| 167 |
|
|
** comment = "Notifications called during an insert operation.">
|
| 168 |
|
|
**/
|
| 169 |
|
|
|
| 170 |
|
|
/*
|
| 171 |
|
|
* <fn description = "Notifies a search started.">
|
| 172 |
|
|
**/
|
| 173 |
|
|
inline void
|
| 174 |
|
|
notify_erase_search_start
|
| 175 |
|
|
();
|
| 176 |
|
|
/** </fn> **/
|
| 177 |
|
|
|
| 178 |
|
|
/*
|
| 179 |
|
|
* <fn description = "Notifies a search encountered a collision.">
|
| 180 |
|
|
**/
|
| 181 |
|
|
inline void
|
| 182 |
|
|
notify_erase_search_collision
|
| 183 |
|
|
();
|
| 184 |
|
|
/** </fn> **/
|
| 185 |
|
|
|
| 186 |
|
|
/*
|
| 187 |
|
|
* <fn description = "Notifies a search ended.">
|
| 188 |
|
|
**/
|
| 189 |
|
|
inline void
|
| 190 |
|
|
notify_erase_search_end
|
| 191 |
|
|
();
|
| 192 |
|
|
/** </fn> **/
|
| 193 |
|
|
|
| 194 |
|
|
/*
|
| 195 |
|
|
***************************************************************************
|
| 196 |
|
|
***************************************************************************
|
| 197 |
|
|
* </group>
|
| 198 |
|
|
**/
|
| 199 |
|
|
|
| 200 |
|
|
|
| 201 |
|
|
/**
|
| 202 |
|
|
***************************************************************************
|
| 203 |
|
|
***************************************************************************
|
| 204 |
|
|
** <group description = "Content change notifications."
|
| 205 |
|
|
** comment = "Notifications called when the content of the table
|
| 206 |
|
|
** changes in a way that can affect the resize policy.">
|
| 207 |
|
|
**/
|
| 208 |
|
|
|
| 209 |
|
|
/*
|
| 210 |
|
|
* <fn description = "Notifies an element was inserted.">
|
| 211 |
|
|
**/
|
| 212 |
|
|
inline void
|
| 213 |
|
|
notify_inserted
|
| 214 |
|
|
(size_type num_e);
|
| 215 |
|
|
/** </fn> **/
|
| 216 |
|
|
|
| 217 |
|
|
/*
|
| 218 |
|
|
* <fn description = "Notifies an element was erased.">
|
| 219 |
|
|
**/
|
| 220 |
|
|
inline void
|
| 221 |
|
|
notify_erased
|
| 222 |
|
|
(size_type num_e);
|
| 223 |
|
|
/** </fn> **/
|
| 224 |
|
|
|
| 225 |
|
|
/*
|
| 226 |
|
|
* <fn description = "Notifies the table was cleared.">
|
| 227 |
|
|
**/
|
| 228 |
|
|
void
|
| 229 |
|
|
notify_cleared
|
| 230 |
|
|
();
|
| 231 |
|
|
/** </fn> **/
|
| 232 |
|
|
|
| 233 |
|
|
/*
|
| 234 |
|
|
***************************************************************************
|
| 235 |
|
|
***************************************************************************
|
| 236 |
|
|
* </group>
|
| 237 |
|
|
**/
|
| 238 |
|
|
|
| 239 |
|
|
|
| 240 |
|
|
/**
|
| 241 |
|
|
***************************************************************************
|
| 242 |
|
|
***************************************************************************
|
| 243 |
|
|
** <group description = "Size change notifications."
|
| 244 |
|
|
** comment = "Notifications called when the table changes size.">
|
| 245 |
|
|
**/
|
| 246 |
|
|
|
| 247 |
|
|
/*
|
| 248 |
|
|
* <fn description = "Notifies the table was resized to new_size.">
|
| 249 |
|
|
**/
|
| 250 |
|
|
void
|
| 251 |
|
|
notify_resized
|
| 252 |
|
|
(size_type new_size);
|
| 253 |
|
|
/** </fn> **/
|
| 254 |
|
|
|
| 255 |
|
|
/*
|
| 256 |
|
|
***************************************************************************
|
| 257 |
|
|
***************************************************************************
|
| 258 |
|
|
* </group>
|
| 259 |
|
|
**/
|
| 260 |
|
|
|
| 261 |
|
|
|
| 262 |
|
|
/**
|
| 263 |
|
|
***************************************************************************
|
| 264 |
|
|
***************************************************************************
|
| 265 |
|
|
** <group description = "Queries."
|
| 266 |
|
|
** comment = "Called to query whether/how to resize.">
|
| 267 |
|
|
**/
|
| 268 |
|
|
|
| 269 |
|
|
/*
|
| 270 |
|
|
* <fn description = "Queries initial size.">
|
| 271 |
|
|
**/
|
| 272 |
|
|
size_type
|
| 273 |
|
|
get_init_size
|
| 274 |
|
|
() const;
|
| 275 |
|
|
/** </fn> **/
|
| 276 |
|
|
|
| 277 |
|
|
/*
|
| 278 |
|
|
* <fn description = "Queries whether a resize is needed.">
|
| 279 |
|
|
**/
|
| 280 |
|
|
inline bool
|
| 281 |
|
|
is_resize_needed
|
| 282 |
|
|
() const;
|
| 283 |
|
|
/** </fn> **/
|
| 284 |
|
|
|
| 285 |
|
|
/*
|
| 286 |
|
|
* <fn description = "Queries what the new size should be.">
|
| 287 |
|
|
**/
|
| 288 |
|
|
size_type
|
| 289 |
|
|
get_new_size
|
| 290 |
|
|
(size_type size, size_type num_used_e) const;
|
| 291 |
|
|
/** </fn> **/
|
| 292 |
|
|
|
| 293 |
|
|
/*
|
| 294 |
|
|
***************************************************************************
|
| 295 |
|
|
***************************************************************************
|
| 296 |
|
|
* </group>
|
| 297 |
|
|
**/
|
| 298 |
|
|
|
| 299 |
|
|
/**
|
| 300 |
|
|
*******************************************************************************
|
| 301 |
|
|
*******************************************************************************
|
| 302 |
|
|
* </protected_methods_group>
|
| 303 |
|
|
**/
|
| 304 |
|
|
};
|
| 305 |
|
|
/**
|
| 306 |
|
|
* </class>
|
| 307 |
|
|
**/
|
| 308 |
|
|
|
| 309 |
|
|
|
| 310 |
|
|
#endif // #ifndef SAMPLE_RESIZE_POLICY_HPP
|
