gem5  v21.2.1.1
h3_bloom_filter.cc
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2019 Inria
3  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
4  * All rights reserved.
5  *
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15  * this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
31 
32 #include <limits>
33 
34 #include "base/bitfield.hh"
35 #include "base/logging.hh"
36 #include "params/BloomFilterH3.hh"
37 
38 namespace gem5
39 {
40 
41 GEM5_DEPRECATED_NAMESPACE(BloomFilter, bloom_filter);
42 namespace bloom_filter
43 {
44 
45 static int H3Matrix[64][16] = {
46  { 33268410, 395488709, 311024285, 456111753,
47  181495008, 119997521, 220697869, 433891432,
48  755927921, 515226970, 719448198, 349842774,
49  269183649, 463275672, 429800228, 521598937, },
50 
51  { 628677802, 820947732, 809435975, 1024657192,
52  887631270, 412050215, 391365090, 324227279,
53  318338329, 1038393087, 489807930, 387366128,
54  518096428, 324184340, 429376066, 447109279, },
55 
56  { 599747653, 404960623, 103933604, 946416030,
57  656460913, 925957005, 1047665689, 163552053,
58  88359290, 841315415, 899833584, 1067336680,
59  348549994, 464045876, 270252128, 829897652, },
60 
61  { 215495230, 966696438, 82589012, 750102795,
62  909780866, 920285789, 769759214, 331966823,
63  939936006, 439950703, 883794828, 1009277508,
64  61634610, 741444350, 98689608, 524144422, },
65 
66  { 93868534, 196958667, 774076619, 327921978,
67  122538783, 879785030, 690748527, 3498564,
68  83163077, 1027963025, 582088444, 466152216,
69  312424878, 550064499, 646612667, 561099434, },
70 
71  { 1002047931, 395477707, 821317480, 890482112,
72  697094476, 263813044, 840275189, 469664185,
73  795625845, 211504898, 99204277, 1004491153,
74  725930417, 1064479221, 893834767, 839719181, },
75 
76  { 278507126, 985111995, 706462983, 1042178726,
77  123281719, 963778122, 500881056, 726291104,
78  134293026, 568379664, 317050609, 533470307,
79  1022365922, 197645211, 315125721, 634827678, },
80 
81  { 219227366, 553960647, 870169525, 322232839,
82  508322497, 648672696, 249405795, 883596102,
83  476433133, 541372919, 646647793, 1042679515,
84  43242483, 600187508, 499866821, 135713210, },
85 
86  { 52837162, 96966684, 401840460, 1071661176,
87  733560065, 150035417, 341319946, 811582750,
88  636173904, 519054065, 196321433, 1028294565,
89  882204070, 522965093, 48884074, 117810166, },
90 
91  { 650860353, 789534698, 328813544, 473250022,
92  143128306, 173196006, 846958825, 174632187,
93  683273509, 405459497, 787235556, 773873501,
94  240110267, 426797736, 92043842, 711789240, },
95 
96  { 586637493, 5059646, 398035664, 6686087,
97  498300175, 948278148, 681227731, 592751744,
98  572019677, 558044722, 589368271, 695745538,
99  1073416749, 529192035, 550984939, 1070620580, },
100 
101  { 102904663, 647598516, 758863940, 313426443,
102  76504114, 1050747783, 708436441, 563815069,
103  224107668, 875925186, 167675944, 926209739,
104  279737287, 1040288182, 768184312, 371708956, },
105 
106  { 683968868, 1027427757, 180781926, 742898864,
107  624078545, 645659833, 577225838, 987150210,
108  723410002, 224013421, 993286634, 33188488,
109  247264323, 888018697, 38048664, 189037096, },
110 
111  { 475612146, 426739285, 873726278, 529192871,
112  607715202, 388486246, 987001312, 474493980,
113  259747270, 417465536, 217062395, 392858482,
114  563810075, 137852805, 1051814153, 72895217, },
115 
116  { 71277086, 785496675, 500608842, 89633426,
117  274085706, 248467935, 838061983, 48106147,
118  773662506, 49545328, 9071573, 100739031,
119  602018002, 904371654, 534132064, 332211304, },
120 
121  { 401893602, 735125342, 775548339, 210224843,
122  256081130, 482894412, 350801633, 1035713633,
123  429458128, 327281409, 739927752, 359327650,
124  886942880, 847691759, 752417993, 359445596, },
125 
126  { 267472014, 1050659620, 1068232362, 1049684368,
127  17130239, 690524969, 793224378, 14455158,
128  423092885, 873853424, 430535778, 7867877,
129  309731959, 370260786, 862353083, 403906850, },
130 
131  { 993077283, 218812656, 389234651, 393202875,
132  413116501, 263300295, 470013158, 592730725,
133  441847172, 732392823, 407574059, 875664777,
134  271347307, 792954404, 554774761, 1022424300, },
135 
136  { 675919719, 637054073, 784720745, 149714381,
137  813144874, 502525801, 635436670, 1003196587,
138  160786091, 947509775, 969788637, 26854073,
139  257964369, 63898568, 539767732, 772364518, },
140 
141  { 943076868, 1021732472, 697575075, 15843624,
142  617573396, 534113303, 122953324, 964873912,
143  942995378, 87830944, 1012914818, 455484661,
144  592160054, 599844284, 810394353, 836812568, },
145 
146  { 688992674, 279465370, 731582262, 687883235,
147  438178468, 80493001, 342701501, 663561405,
148  23360106, 531315007, 508931618, 36294623,
149  231216223, 840438413, 255665680, 663205938, },
150 
151  { 857265418, 552630887, 8173237, 792122963,
152  210140052, 823124938, 667709953, 751538219,
153  991957789, 462064153, 19070176, 726604748,
154  714567823, 151147895, 1012619677, 697114353, },
155 
156  { 467105652, 683256174, 702387467, 28730434,
157  549942998, 48712701, 960519696, 1008345587,
158  679267717, 370932249, 880419471, 352141567,
159  331640403, 598772468, 95160685, 812053015, },
160 
161  { 1053491323, 430526562, 1014938507, 109685515,
162  765949103, 177288303, 1034642653, 485421658,
163  71850281, 981034542, 61620389, 601367920,
164  504420930, 220599168, 583051998, 158735752, },
165 
166  { 103033901, 522494916, 658494760, 959206022,
167  931348143, 834510661, 21542994, 189699884,
168  679327018, 171983002, 96774168, 456133168,
169  543103352, 923945936, 970074188, 643658485, },
170 
171  { 566379913, 805798263, 840662512, 820206124,
172  796507494, 223712542, 118811519, 662246595,
173  809326534, 416471323, 748027186, 161169753,
174  739149488, 276330378, 924837051, 964873733, },
175 
176  { 585882743, 135502711, 3386031, 625631285,
177  1068193307, 270342640, 432739484, 556606453,
178  826419155, 1038540977, 158000202, 69109538,
179  207087256, 298111218, 678046259, 184611498, },
180 
181  { 305310710, 46237988, 855726974, 735975153,
182  930663798, 425764232, 104362407, 391371443,
183  867622101, 71645091, 61824734, 661902640,
184  293738633, 309416189, 281710675, 879317360, },
185 
186  { 398146324, 398293087, 689145387, 1038451703,
187  521637478, 516134620, 314658937, 830334981,
188  583400300, 340083705, 68029852, 675389876,
189  994635780, 788959180, 406967042, 74403607, },
190 
191  { 69463153, 744427484, 191639960, 590927798,
192  969916795, 546846769, 728756758, 889355646,
193  520855076, 136068426, 776132410, 189663815,
194  252051082, 533662856, 362198652, 1026161384, },
195 
196  { 584984279, 1004834381, 568439705, 834508761,
197  21812513, 670870173, 1052043300, 341868768,
198  473755574, 124339439, 36193947, 437997647,
199  137419489, 58705193, 337793711, 340738909, },
200 
201  { 898051466, 512792906, 234874060, 655358775,
202  683745319, 671676404, 428888546, 639928192,
203  672697722, 176477579, 747020991, 758211282,
204  443045009, 205395173, 1016944273, 5584717, },
205 
206  { 156038300, 138620174, 588466825, 1061494056,
207  1013672100, 1064257198, 881417791, 839470738,
208  83519030, 100875683, 237486447, 461483733,
209  681527127, 777996147, 574635362, 815974538, },
210 
211  { 184168473, 519509808, 62531892, 51821173,
212  43787358, 385711644, 141325169, 36069511,
213  584183031, 571372909, 671503175, 226486781,
214  194932686, 1045460970, 753718579, 331442433, },
215 
216  { 73065106, 1015327221, 630916840, 1058053470,
217  306737587, 296343219, 907194989, 920172546,
218  224516225, 818625553, 551143849, 634570650,
219  432966225, 756438259, 939564853, 767999933, },
220 
221  { 884775648, 394862257, 446787794, 219833788,
222  727195727, 728122304, 249888353, 732947974,
223  289908868, 448282580, 618161877, 898939716,
224  739554163, 860631799, 1058977530, 86916736, },
225 
226  { 143850006, 352708694, 200194048, 979764914,
227  629404175, 546279766, 72106714, 860980514,
228  313190585, 897143111, 308425797, 953791785,
229  349924906, 221457005, 950588925, 908254505, },
230 
231  { 950032043, 829868728, 68623614, 714624605,
232  69760597, 297275854, 355894016, 985369737,
233  882852618, 864071289, 958512902, 950910111,
234  991368991, 829645051, 434698210, 771350575, },
235 
236  { 552695074, 319195551, 80297396, 496413831,
237  944046531, 621525571, 617653363, 416729825,
238  441842808, 9847464, 99420657, 1033914550,
239  812966458, 937053011, 673390195, 934577365, },
240 
241  { 1034695843, 190969665, 332900185, 51897434,
242  523888639, 883512843, 146908572, 506785674,
243  565814307, 692255649, 314052926, 826386588,
244  430691325, 866927620, 413880214, 936474339, },
245 
246  { 129380164, 741739952, 1013703462, 494392795,
247  957214600, 1010879043, 931790677, 94551922,
248  988065869, 120637871, 882506912, 395075379,
249  210570485, 812422692, 910383687, 817722285, },
250 
251  { 51850866, 283408630, 1053047202, 858940389,
252  818507731, 477082181, 353546901, 993324368,
253  407093779, 231608253, 1067319867, 73159811,
254  429792535, 971320614, 565699344, 718823399, },
255 
256  { 408185106, 491493570, 596050720, 310776444,
257  703628192, 454438809, 523988035, 728512200,
258  686012353, 976339656, 72816924, 116926720,
259  165866591, 452043792, 866943072, 968545481, },
260 
261  { 443231195, 905907843, 1061421320, 746360489,
262  1043120338, 1069659155, 463359031, 688303227,
263  186550710, 155347339, 1044842421, 1005904570,
264  69332909, 706951903, 422513657, 882038450, },
265 
266  { 430990623, 946501980, 742556791, 278398643,
267  183759217, 659404315, 279754382, 1069347846,
268  843746517, 222777670, 990835599, 548741637,
269  129220580, 1392170, 1032654091, 894058935, },
270 
271  { 452042227, 751640705, 259481376, 765824585,
272  145991469, 1013683228, 1055491225, 536379588,
273  392593350, 913368594, 1029429776, 226857786,
274  31505342, 1054416381, 32341741, 687106649, },
275 
276  { 404750944, 811417027, 869530820, 773491060,
277  810901282, 979340397, 1036910290, 461764404,
278  834235095, 765695033, 604692390, 452158120,
279  928988098, 442719218, 1024059719, 167723114, },
280 
281  { 974245177, 1046377300, 1003424287, 787349855,
282  336314155, 875074696, 1018462718, 890313003,
283  367376809, 86355556, 1020618772, 890710345,
284  444741481, 373230261, 767064947, 840920177, },
285 
286  { 719581124, 431808156, 138301690, 668222575,
287  497413494, 740492013, 485033226, 125301442,
288  831265111, 879071459, 341690480, 152975256,
289  850330086, 717444507, 694225877, 785340566, },
290 
291  { 1032766252, 140959364, 737474726, 1062767538,
292  364464647, 331414723, 356152634, 642832379,
293  158733632, 374691640, 285504811, 345349905,
294  876599880, 476392727, 479589210, 606376325, },
295 
296  { 174997730, 778177086, 319164313, 163614456,
297  10331364, 599358958, 8331663, 237538058,
298  159173957, 174533880, 65588684, 878222844,
299  424467599, 901803515, 187504218, 776690353, },
300 
301  { 803856182, 965850321, 694948067, 218315960,
302  358416571, 683713254, 178069303, 428076035,
303  686176454, 579553217, 357306738, 315018080,
304  886852373, 568563910, 896839725, 257416821, },
305 
306  { 401650013, 183289141, 497957228, 879734476,
307  265024455, 825794561, 889237440, 323359863,
308  100258491, 991414783, 313986632, 85847250,
309  362520248, 276103512, 1041630342, 525981595, },
310 
311  { 487732740, 46201705, 990837834, 62744493,
312  1067364756, 58015363, 690846283, 680262648,
313  997278956, 469357861, 432164624, 996763915,
314  211907847, 167824295, 144928194, 454839915, },
315 
316  { 41404232, 514493300, 259546924, 578217256,
317  972345130, 123299213, 346040332, 1014668104,
318  520910639, 579955198, 36627803, 179072921,
319  547684341, 598950511, 269497394, 854352266, },
320 
321  { 603906768, 100863318, 708837659, 204175569,
322  375560904, 908375384, 28314106, 6303733,
323  175283124, 749851198, 308667367, 415293931,
324  225365403, 1032188331, 977112710, 819705229, },
325 
326  { 399767123, 697985692, 356790426, 643687584,
327  298624218, 185095167, 381653926, 876816342,
328  296720023, 2205879, 235816616, 521850105,
329  622753786, 1021421218, 726349744, 256504902, },
330 
331  { 851245024, 1022500222, 511909628, 313809625,
332  99776025, 39710175, 798739932, 741832408,
333  140631966, 898295927, 607660421, 870669312,
334  1051422478, 789055529, 669113756, 681943450, },
335 
336  { 853872755, 491465269, 503341472, 98019440,
337  258267420, 335602837, 320687824, 1053324395,
338  24932389, 955011453, 934255131, 435625663,
339  501568768, 238967025, 549987406, 248619780, },
340 
341  { 411151284, 576471205, 757985419, 544137226,
342  968135693, 877548443, 194586894, 74882373,
343  248353663, 21207540, 273789651, 853653916,
344  861267970, 533253322, 3739570, 661358586, },
345 
346  { 271430986, 71390029, 257643671, 949329860,
347  348156406, 251939238, 445808698, 48269799,
348  907589462, 105677619, 635451508, 20805932,
349  464874661, 7542147, 243619464, 288304568, },
350 
351  { 368215982, 530288964, 770090421, 660961164,
352  614935537, 630760399, 931299233, 794519275,
353  779918979, 401746493, 561237006, 1027202224,
354  258968003, 339508073, 1050610516, 1064307013, },
355 
356  { 1039172162, 448331205, 928997884, 49813151,
357  198712120, 992335354, 671024050, 879525220,
358  745915336, 1038822580, 138669665, 917958819,
359  681422342, 792868818, 924762727, 816386174, },
360 
361  { 515190336, 313808618, 441296783, 1022120897,
362  792325033, 354387581, 59273006, 280075434,
363  411357221, 665274694, 4054464, 1059046246,
364  394261773, 848616745, 15446017, 517723271, },
365 };
366 
367 H3::H3(const BloomFilterH3Params &p)
368  : MultiBitSel(p)
369 {
370  fatal_if(numHashes > 16, "There are only 16 H3 functions implemented.");
371 }
372 
374 {
375 }
376 
377 int
378 H3::hash(Addr addr, int hash_number) const
379 {
380  uint64_t val =
381  bits(addr, std::numeric_limits<Addr>::digits - 1, offsetBits);
382  int result = 0;
383 
384  for (int i = 0; (i < 64) && val; i++, val >>= 1) {
385  if (val & 1) {
386  result ^= H3Matrix[i][hash_number];
387  }
388  }
389 
390  if (isParallel) {
391  return (result % parFilterSize) + hash_number * parFilterSize;
392  } else {
393  return result % filter.size();
394  }
395 }
396 
397 } // namespace bloom_filter
398 } // namespace gem5
gem5::bloom_filter::MultiBitSel::parFilterSize
const int parFilterSize
Size of the filter when doing parallel hashing.
Definition: multi_bit_sel_bloom_filter.hh:70
gem5::bloom_filter::MultiBitSel::numHashes
const int numHashes
Number of hashes.
Definition: multi_bit_sel_bloom_filter.hh:67
h3_bloom_filter.hh
gem5::bloom_filter::Base::filter
std::vector< SatCounter8 > filter
The filter itself.
Definition: base.hh:56
gem5::bloom_filter::Base::offsetBits
const unsigned offsetBits
Number of LSB bits to ignore from the the addresses.
Definition: base.hh:53
gem5::X86ISA::val
Bitfield< 63 > val
Definition: misc.hh:775
gem5::ArmISA::i
Bitfield< 7 > i
Definition: misc_types.hh:67
bitfield.hh
gem5::bloom_filter::H3::H3
H3(const BloomFilterH3Params &p)
Definition: h3_bloom_filter.cc:367
gem5::MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
gem5::bloom_filter::H3::hash
int hash(Addr addr, int hash_number) const override
Apply the selected the hash functions to an address.
Definition: h3_bloom_filter.cc:378
gem5::bloom_filter::MultiBitSel::isParallel
const bool isParallel
Whether hashing should be performed in parallel.
Definition: multi_bit_sel_bloom_filter.hh:73
gem5::bits
constexpr T bits(T val, unsigned first, unsigned last)
Extract the bitfield from position 'first' to 'last' (inclusive) from 'val' and right justify it.
Definition: bitfield.hh:76
gem5::bloom_filter::MultiBitSel
The MultiBitSel Bloom Filter associates an address to multiple entries through the use of multiple ha...
Definition: multi_bit_sel_bloom_filter.hh:48
gem5::Addr
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition: types.hh:147
gem5::GEM5_DEPRECATED_NAMESPACE
GEM5_DEPRECATED_NAMESPACE(GuestABI, guest_abi)
gem5::bloom_filter::H3::~H3
~H3()
Definition: h3_bloom_filter.cc:373
logging.hh
gem5::bloom_filter::H3Matrix
static int H3Matrix[64][16]
Definition: h3_bloom_filter.cc:45
fatal_if
#define fatal_if(cond,...)
Conditional fatal macro that checks the supplied condition and only causes a fatal error if the condi...
Definition: logging.hh:226
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: tlb.cc:60
gem5::X86ISA::addr
Bitfield< 3 > addr
Definition: types.hh:84

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