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fixed some mistakes in BRZ algorithm

This commit is contained in:
fc_botelho 2005-07-29 00:00:01 +00:00
parent 7f38f249a9
commit 699e9b4617
3 changed files with 75 additions and 33 deletions
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6
src/bmz.c
View File

@ -413,7 +413,6 @@ static int bmz_gen_edges(cmph_config_t *mph)
cmph_uint32 e;
bmz_config_data_t *bmz = (bmz_config_data_t *)mph->data;
cmph_uint8 multiple_edges = 0;
DEBUGP("Generating edges for %u vertices\n", bmz->n);
graph_clear_edges(bmz->graph);
mph->key_source->rewind(mph->key_source->data);
@ -421,8 +420,10 @@ static int bmz_gen_edges(cmph_config_t *mph)
{
cmph_uint32 h1, h2;
cmph_uint32 keylen;
char *key;
char *key = NULL;
mph->key_source->read(mph->key_source->data, &key, &keylen);
// if (key == NULL)fprintf(stderr, "key = %s -- read BMZ\n", key);
h1 = hash(bmz->hashes[0], key, keylen) % bmz->n;
h2 = hash(bmz->hashes[1], key, keylen) % bmz->n;
if (h1 == h2) if (++h2 >= bmz->n) h2 = 0;
@ -434,6 +435,7 @@ static int bmz_gen_edges(cmph_config_t *mph)
}
DEBUGP("Adding edge: %u -> %u for key %s\n", h1, h2, key);
mph->key_source->dispose(mph->key_source->data, key, keylen);
// fprintf(stderr, "key = %s -- dispose BMZ\n", key);
multiple_edges = graph_contains_edge(bmz->graph, h1, h2);
if (mph->verbosity && multiple_edges) fprintf(stderr, "A non simple graph was generated\n");
if (multiple_edges) return 0; // checking multiple edge restriction.

57
src/brz.c
View File

@ -19,7 +19,7 @@
static int brz_before_gen_graphs(cmph_config_t *mph, cmph_uint32 * disksize, cmph_uint32 * diskoffset);
static void brz_gen_graphs(cmph_config_t *mph, cmph_uint32 * disksize, cmph_uint32 * diskoffset, FILE * graphs_fd);
static char ** brz_read_keys_vd(FILE * graphs_fd, cmph_uint8 nkeys);
static char ** brz_read_keys_vd(FILE * graphs_fd, cmph_uint8 nkeys, cmph_uint32 h3);
static void brz_destroy_keys_vd(char ** keys_vd, cmph_uint8 nkeys);
static void brz_copy_partial_mphf(brz_config_data_t *brz, bmz_data_t * bmzf, cmph_uint32 index);
@ -78,9 +78,9 @@ cmph_t *brz_new(cmph_config_t *mph, float c)
DEBUGP("c: %f\n", c);
brz_config_data_t *brz = (brz_config_data_t *)mph->data;
brz->m = mph->key_source->nkeys;
DEBUGP("m: %f\n", brz->m);
DEBUGP("m: %u\n", brz->m);
brz->k = ceil(brz->m/128);
DEBUGP("k: %f\n", brz->k);
DEBUGP("k: %u\n", brz->k);
brz->size = (cmph_uint8 *) malloc(sizeof(cmph_uint8)*brz->k);
brz->offset = (cmph_uint32 *)malloc(sizeof(cmph_uint32)*brz->k);
@ -128,7 +128,7 @@ cmph_t *brz_new(cmph_config_t *mph, float c)
return NULL;
}
graphs_fd = fopen("/colecao/fbotelho/cmph.tmp", "wb+");
graphs_fd = fopen("/colecao/fbotelho/cmph.tmp", "wb");
if (graphs_fd == NULL)
{
free(brz->size);
@ -138,12 +138,13 @@ cmph_t *brz_new(cmph_config_t *mph, float c)
fprintf(stderr, "Unable to open file %s\n", "/colecao/fbotelho/cmph.tmp");
return NULL;
}
// Clustering the keys by graph id.
brz_gen_graphs(mph, disksize, diskoffset, graphs_fd);
free(disksize);
free(diskoffset);
DEBUGP("Graphs generated\n");
fclose(graphs_fd);
graphs_fd = fopen("/colecao/fbotelho/cmph.tmp", "rb");
// codigo do algoritmo...
brz->h1 = (hash_state_t **)malloc(sizeof(hash_state_t *)*brz->k);
brz->h2 = (hash_state_t **)malloc(sizeof(hash_state_t *)*brz->k);
@ -151,20 +152,18 @@ cmph_t *brz_new(cmph_config_t *mph, float c)
for(i = 0; i < brz->k; i++)
{
cmph_uint32 j;
bmz_data_t * bmzf = NULL;
if (brz->size[i] == 0) continue;
keys_vd = brz_read_keys_vd(graphs_fd, brz->size[i]);
keys_vd = brz_read_keys_vd(graphs_fd, brz->size[i], i);
// Source of keys
source = cmph_io_vector_adapter(keys_vd, (cmph_uint32)brz->size[i]);
config = cmph_config_new(source);
cmph_config_set_algo(config, CMPH_BMZ);
cmph_config_set_graphsize(config, c);
mphf_tmp = cmph_new(config);
bmzf = (bmz_data_t *)mphf_tmp->data;
brz_copy_partial_mphf(brz, bmzf, i); // implementar
cmph_config_destroy(config);
brz_destroy_keys_vd(keys_vd, brz->size[i]);
free(keys_vd);
@ -174,7 +173,6 @@ cmph_t *brz_new(cmph_config_t *mph, float c)
fclose(graphs_fd);
// Generating a mphf
mphf = (cmph_t *)malloc(sizeof(cmph_t));
mphf->algo = mph->algo;
@ -216,15 +214,29 @@ static int brz_before_gen_graphs(cmph_config_t *mph, cmph_uint32 * disksize, cmp
char *key;
mph->key_source->read(mph->key_source->data, &key, &keylen);
h3 = hash(brz->h3, key, keylen) % brz->k;
if(h3 == 6)
{
DEBUGP("key = %s\n", key);
DEBUGP("keylen = %u\n", keylen + 1);
}
mph->key_source->dispose(mph->key_source->data, key, keylen);
if (brz->size[h3] == 255) return 0;
brz->size[h3] = brz->size[h3] + 1;
disksize[h3] = disksize[h3] + keylen + 1;
// if(h3 == 6)
// {
// DEBUGP("disksize[%u]=%u \n", h3, disksize[h3]);
// }
}
fprintf(stderr, "size:%u offset: %u\n", brz->size[0], brz->offset[0]);
for (e = 1; e < brz->k; ++e)
{
brz->offset[e] = brz->size[e-1] + brz->size[e];
diskoffset[e] = disksize[e-1] + disksize[e];
brz->offset[e] = brz->size[e-1] + brz->offset[e-1];
diskoffset[e] = disksize[e-1] + diskoffset[e-1];
DEBUGP("disksize[%u]=%u diskoffset[%u]: %u\n", e, disksize[e], e, diskoffset[e]);
DEBUGP("size[%u]=%u offset[%u]: %u\n", e, brz->size[e], e, brz->offset[e]);
}
return 1;
}
@ -243,14 +255,23 @@ static void brz_gen_graphs(cmph_config_t *mph, cmph_uint32 * disksize, cmph_uint
char *key;
mph->key_source->read(mph->key_source->data, &key, &keylen);
h3 = hash(brz->h3, key, keylen) % brz->k;
mph->key_source->dispose(mph->key_source->data, key, keylen);
if(h3 == 6)
{
DEBUGP("key = %s\n", key);
DEBUGP("keylen = %u\n", keylen + 1);
}
fseek(graphs_fd, diskoffset[h3], SEEK_SET);
fwrite(key, sizeof(char), keylen + 1, graphs_fd);
if(h3 == 6)
{
DEBUGP("diskoffset[%u]=%u \n", h3, diskoffset[h3]);
}
diskoffset[h3] = diskoffset[h3] + keylen + 1;
mph->key_source->dispose(mph->key_source->data, key, keylen);
}
}
static char ** brz_read_keys_vd(FILE * graphs_fd, cmph_uint8 nkeys)
static char ** brz_read_keys_vd(FILE * graphs_fd, cmph_uint8 nkeys, cmph_uint32 h3)
{
char ** keys_vd = (char **)malloc(sizeof(char *)*nkeys);
cmph_uint8 i;
@ -270,6 +291,7 @@ static char ** brz_read_keys_vd(FILE * graphs_fd, cmph_uint8 nkeys)
}
keys_vd[i] = (char *)malloc(strlen(buf) + 1);
strcpy(keys_vd[i], buf);
if(h3 == 6) DEBUGP("key = %s\n", keys_vd[i]);
free(buf);
}
return keys_vd;
@ -389,14 +411,19 @@ void brz_destroy(cmph_t *mphf)
{
cmph_uint32 i;
brz_data_t *data = (brz_data_t *)mphf->data;
fprintf(stderr, "MERDAAAAAA %u\n", data->h3->hashfunc);
for(i = 0; i < data->k; i++)
{
free(data->g[i]);
fprintf(stderr, "MERDAAAAAA1 %u\n", data->h3->hashfunc);
hash_state_destroy(data->h1[i]);
fprintf(stderr, "MERDAAAAAA2 %u\n", data->h3->hashfunc);
hash_state_destroy(data->h2[i]);
fprintf(stderr, "MERDAAAAAA3 %u\n", data->h3->hashfunc);
}
fprintf(stderr, "MERDAAAAAA %u\n", data->h3->hashfunc);
hash_state_destroy(data->h3);
fprintf(stderr, "MERDAAAAAA1FAB\n");
free(data->g);
free(data->h1);
free(data->h2);

31
src/cmph.c
View File

@ -41,12 +41,19 @@ static int key_nlfile_read(void *data, char **key, cmph_uint32 *keylen)
static int key_vector_read(void *data, char **key, cmph_uint32 *keylen)
{
char **keys = (char **)data;
if (keys + position == NULL) return -1;
*keylen = strlen(*(keys + position));
*key = (char *)malloc(*keylen);
strcpy(*key, *(keys + position));
char **keys_vd = (char **)data;
if (keys_vd + position == NULL) return -1;
*keylen = strlen(*(keys_vd + position));
*key = (char *)malloc(*keylen + 1);
strcpy(*key, *(keys_vd + position));
position ++;
/* char **keys_vd = (char **)data;
if (keys_vd[position] == NULL) return -1;
*keylen = strlen(keys_vd[position]);
*key = (char *)malloc(*keylen + 1);
strcpy(*key, keys_vd[position]);
position ++;*/
return *keylen;
}
@ -56,6 +63,11 @@ static void key_nlfile_dispose(void *data, char *key, cmph_uint32 keylen)
free(key);
}
static void key_vector_dispose(void *data, char *key, cmph_uint32 keylen)
{
free(key);
}
static void key_nlfile_rewind(void *data)
{
FILE *fd = (FILE *)data;
@ -67,6 +79,7 @@ static void key_vector_rewind(void *data)
position = 0;
}
static cmph_uint32 count_nlfile_keys(FILE *fd)
{
cmph_uint32 count = 0;
@ -114,7 +127,7 @@ cmph_io_adapter_t *cmph_io_vector_adapter(char ** vector, cmph_uint32 nkeys)
key_source->data = (void *)vector;
key_source->nkeys = nkeys;
key_source->read = key_vector_read;
key_source->dispose = key_nlfile_dispose;
key_source->dispose = key_vector_dispose;
key_source->rewind = key_vector_rewind;
return key_source;
}
@ -136,13 +149,13 @@ void cmph_config_set_algo(cmph_config_t *mph, CMPH_ALGO algo)
switch (mph->algo)
{
case CMPH_CHM:
chm_config_destroy(mph->data);
chm_config_destroy(mph);
break;
case CMPH_BMZ:
bmz_config_destroy(mph->data);
bmz_config_destroy(mph);
break;
case CMPH_BRZ:
brz_config_destroy(mph->data);
brz_config_destroy(mph);
break;
default:
assert(0);