src/set/gnunet-set-ibf-profiler.c

   1 /*
   2      This file is part of GNUnet.
   3      Copyright (C) 2012 GNUnet e.V.
   4
   5      GNUnet is free software: you can redistribute it and/or modify it
   6      under the terms of the GNU Affero General Public License as published
   7      by the Free Software Foundation, either version 3 of the License,
   8      or (at your option) any later version.
   9
  10      GNUnet is distributed in the hope that it will be useful, but
  11      WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13      Affero General Public License for more details.
  14
  15      You should have received a copy of the GNU Affero General Public License
  16      along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18      SPDX-License-Identifier: AGPL3.0-or-later
  19  */
  20
  21 /**
  22  * @file set/gnunet-set-ibf-profiler.c
  23  * @brief tool for profiling the invertible bloom filter implementation
  24  * @author Florian Dold
  25  */
  26
  27 #include "platform.h"
  28 #include "gnunet_util_lib.h"
  29
  30 #include "ibf.h"
  31
  32 static unsigned int asize = 10;
  33 static unsigned int bsize = 10;
  34 static unsigned int csize = 10;
  35 static unsigned int hash_num = 4;
  36 static unsigned int ibf_size = 80;
  37
  38 /* FIXME: add parameter for this */
  39 static enum GNUNET_CRYPTO_Quality random_quality = GNUNET_CRYPTO_QUALITY_WEAK;
  40
  41 static struct GNUNET_CONTAINER_MultiHashMap *set_a;
  42 static struct GNUNET_CONTAINER_MultiHashMap *set_b;
  43 /* common elements in a and b */
  44 static struct GNUNET_CONTAINER_MultiHashMap *set_c;
  45
  46 static struct GNUNET_CONTAINER_MultiHashMap *key_to_hashcode;
  47
  48 static struct InvertibleBloomFilter *ibf_a;
  49 static struct InvertibleBloomFilter *ibf_b;
  50
  51
  52 static void
  53 register_hashcode(struct GNUNET_HashCode *hash)
  54 {
  55   struct GNUNET_HashCode replicated;
  56   struct IBF_Key key;
  57
  58   key = ibf_key_from_hashcode(hash);
  59   ibf_hashcode_from_key(key, &replicated);
  60   (void)GNUNET_CONTAINER_multihashmap_put(
  61     key_to_hashcode,
  62     &replicated,
  63     GNUNET_memdup(hash, sizeof *hash),
  64     GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
  65 }
  66
  67
  68 static void
  69 iter_hashcodes(struct IBF_Key key,
  70                GNUNET_CONTAINER_MulitHashMapIteratorCallback iter,
  71                void *cls)
  72 {
  73   struct GNUNET_HashCode replicated;
  74
  75   ibf_hashcode_from_key(key, &replicated);
  76   GNUNET_CONTAINER_multihashmap_get_multiple(key_to_hashcode,
  77                                              &replicated,
  78                                              iter,
  79                                              cls);
  80 }
  81
  82
  83 static int
  84 insert_iterator(void *cls, const struct GNUNET_HashCode *key, void *value)
  85 {
  86   struct InvertibleBloomFilter *ibf = cls;
  87
  88   ibf_insert(ibf, ibf_key_from_hashcode(key));
  89   return GNUNET_YES;
  90 }
  91
  92
  93 static int
  94 remove_iterator(void *cls, const struct GNUNET_HashCode *key, void *value)
  95 {
  96   struct GNUNET_CONTAINER_MultiHashMap *hashmap = cls;
  97
  98   /* if remove fails, there just was a collision with another key */
  99   (void)GNUNET_CONTAINER_multihashmap_remove(hashmap, value, NULL);
 100   return GNUNET_YES;
 101 }
 102
 103
 104 static void
 105 run(void *cls,
 106     char *const *args,
 107     const char *cfgfile,
 108     const struct GNUNET_CONFIGURATION_Handle *cfg)
 109 {
 110   struct GNUNET_HashCode id;
 111   struct IBF_Key ibf_key;
 112   int i;
 113   int side;
 114   int res;
 115   struct GNUNET_TIME_Absolute start_time;
 116   struct GNUNET_TIME_Relative delta_time;
 117
 118   set_a =
 119     GNUNET_CONTAINER_multihashmap_create(((asize == 0) ? 1 : (asize + csize)),
 120                                          GNUNET_NO);
 121   set_b =
 122     GNUNET_CONTAINER_multihashmap_create(((bsize == 0) ? 1 : (bsize + csize)),
 123                                          GNUNET_NO);
 124   set_c = GNUNET_CONTAINER_multihashmap_create(((csize == 0) ? 1 : csize),
 125                                                GNUNET_NO);
 126
 127   key_to_hashcode =
 128     GNUNET_CONTAINER_multihashmap_create(((asize + bsize + csize == 0)
 129                                           ? 1
 130                                           : (asize + bsize + csize)),
 131                                          GNUNET_NO);
 132
 133   printf("hash-num=%u, size=%u, #(A-B)=%u, #(B-A)=%u, #(A&B)=%u\n",
 134          hash_num,
 135          ibf_size,
 136          asize,
 137          bsize,
 138          csize);
 139
 140   i = 0;
 141   while (i < asize)
 142     {
 143       GNUNET_CRYPTO_hash_create_random(random_quality, &id);
 144       if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains(set_a, &id))
 145         continue;
 146       GNUNET_break(GNUNET_OK ==
 147                    GNUNET_CONTAINER_multihashmap_put(
 148                      set_a,
 149                      &id,
 150                      NULL,
 151                      GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
 152       register_hashcode(&id);
 153       i++;
 154     }
 155   i = 0;
 156   while (i < bsize)
 157     {
 158       GNUNET_CRYPTO_hash_create_random(random_quality, &id);
 159       if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains(set_a, &id))
 160         continue;
 161       if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains(set_b, &id))
 162         continue;
 163       GNUNET_break(GNUNET_OK ==
 164                    GNUNET_CONTAINER_multihashmap_put(
 165                      set_b,
 166                      &id,
 167                      NULL,
 168                      GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
 169       register_hashcode(&id);
 170       i++;
 171     }
 172   i = 0;
 173   while (i < csize)
 174     {
 175       GNUNET_CRYPTO_hash_create_random(random_quality, &id);
 176       if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains(set_a, &id))
 177         continue;
 178       if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains(set_b, &id))
 179         continue;
 180       if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains(set_c, &id))
 181         continue;
 182       GNUNET_break(GNUNET_OK ==
 183                    GNUNET_CONTAINER_multihashmap_put(
 184                      set_c,
 185                      &id,
 186                      NULL,
 187                      GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
 188       register_hashcode(&id);
 189       i++;
 190     }
 191
 192   ibf_a = ibf_create(ibf_size, hash_num);
 193   ibf_b = ibf_create(ibf_size, hash_num);
 194   if ((NULL == ibf_a) || (NULL == ibf_b))
 195     {
 196       /* insufficient memory */
 197       GNUNET_break(0);
 198       GNUNET_SCHEDULER_shutdown();
 199       return;
 200     }
 201
 202
 203   printf("generated sets\n");
 204
 205   start_time = GNUNET_TIME_absolute_get();
 206
 207   GNUNET_CONTAINER_multihashmap_iterate(set_a, &insert_iterator, ibf_a);
 208   GNUNET_CONTAINER_multihashmap_iterate(set_b, &insert_iterator, ibf_b);
 209   GNUNET_CONTAINER_multihashmap_iterate(set_c, &insert_iterator, ibf_a);
 210   GNUNET_CONTAINER_multihashmap_iterate(set_c, &insert_iterator, ibf_b);
 211
 212   delta_time = GNUNET_TIME_absolute_get_duration(start_time);
 213
 214   printf("encoded in: %s\n",
 215          GNUNET_STRINGS_relative_time_to_string(delta_time, GNUNET_NO));
 216
 217   ibf_subtract(ibf_a, ibf_b);
 218
 219
 220   start_time = GNUNET_TIME_absolute_get();
 221
 222   for (i = 0; i <= asize + bsize; i++)
 223     {
 224       res = ibf_decode(ibf_a, &side, &ibf_key);
 225       if (GNUNET_SYSERR == res)
 226         {
 227           printf("decode failed, %u/%u elements left\n",
 228                  GNUNET_CONTAINER_multihashmap_size(set_a) +
 229                  GNUNET_CONTAINER_multihashmap_size(set_b),
 230                  asize + bsize);
 231           return;
 232         }
 233       if (GNUNET_NO == res)
 234         {
 235           if ((0 == GNUNET_CONTAINER_multihashmap_size(set_b)) &&
 236               (0 == GNUNET_CONTAINER_multihashmap_size(set_a)))
 237             {
 238               delta_time = GNUNET_TIME_absolute_get_duration(start_time);
 239               printf("decoded successfully in: %s\n",
 240                      GNUNET_STRINGS_relative_time_to_string(delta_time, GNUNET_NO));
 241             }
 242           else
 243             {
 244               printf("decode missed elements (should never happen)\n");
 245             }
 246           return;
 247         }
 248
 249       if (side == 1)
 250         iter_hashcodes(ibf_key, remove_iterator, set_a);
 251       if (side == -1)
 252         iter_hashcodes(ibf_key, remove_iterator, set_b);
 253     }
 254   printf("cyclic IBF, %u/%u elements left\n",
 255          GNUNET_CONTAINER_multihashmap_size(set_a) +
 256          GNUNET_CONTAINER_multihashmap_size(set_b),
 257          asize + bsize);
 258 }
 259
 260
 261 int
 262 main(int argc, char **argv)
 263 {
 264   struct GNUNET_GETOPT_CommandLineOption options[] = {
 265     GNUNET_GETOPT_option_uint('A',
 266                               "asize",
 267                               NULL,
 268                               gettext_noop("number of element in set A-B"),
 269                               &asize),
 270
 271     GNUNET_GETOPT_option_uint('B',
 272                               "bsize",
 273                               NULL,
 274                               gettext_noop("number of element in set B-A"),
 275                               &bsize),
 276
 277     GNUNET_GETOPT_option_uint('C',
 278                               "csize",
 279                               NULL,
 280                               gettext_noop(
 281                                 "number of common elements in A and B"),
 282                               &csize),
 283
 284     GNUNET_GETOPT_option_uint('k',
 285                               "hash-num",
 286                               NULL,
 287                               gettext_noop("hash num"),
 288                               &hash_num),
 289
 290     GNUNET_GETOPT_option_uint('s',
 291                               "ibf-size",
 292                               NULL,
 293                               gettext_noop("ibf size"),
 294                               &ibf_size),
 295
 296     GNUNET_GETOPT_OPTION_END
 297   };
 298
 299   GNUNET_PROGRAM_run2(argc,
 300                       argv,
 301                       "gnunet-consensus-ibf",
 302                       "help",
 303                       options,
 304                       &run,
 305                       NULL,
 306                       GNUNET_YES);
 307   return 0;
 308 }