BMZ8 - A 8 bit version of BMZ has been added
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5473b2f124
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@ -16,6 +16,7 @@ libcmph_la_SOURCES = debug.h\
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cmph_structs.h cmph_structs.c\
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chm.h chm_structs.h chm.c\
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bmz.h bmz_structs.h bmz.c\
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bmz8.h bmz8_structs.h bmz8.c\
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brz.h brz_structs.h brz.c
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libcmph_la_LDFLAGS = -version-info 0:0:0
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@ -31,13 +31,13 @@ bmz_config_data_t *bmz_config_new()
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{
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bmz_config_data_t *bmz;
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bmz = (bmz_config_data_t *)malloc(sizeof(bmz_config_data_t));
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assert(bmz);
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memset(bmz, 0, sizeof(bmz_config_data_t));
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bmz->hashfuncs[0] = CMPH_HASH_JENKINS;
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bmz->hashfuncs[1] = CMPH_HASH_JENKINS;
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bmz->g = NULL;
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bmz->graph = NULL;
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bmz->hashes = NULL;
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assert(bmz);
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return bmz;
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}
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@ -378,7 +378,7 @@ static void bmz_traverse(bmz_config_data_t *bmz, cmph_uint8 * used_edges, cmph_u
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DEBUGP("Visiting neighbor %u\n", neighbor);
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*unused_edge_index = next_unused_edge(bmz, used_edges, *unused_edge_index);
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bmz->g[neighbor] = *unused_edge_index - bmz->g[v];
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if (bmz->g[neighbor] >= bmz->m) bmz->g[neighbor] += bmz->m;
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//if (bmz->g[neighbor] >= bmz->m) bmz->g[neighbor] += bmz->m;
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SETBIT(visited, neighbor);
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(*unused_edge_index)++;
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bmz_traverse(bmz, used_edges, neighbor, unused_edge_index, visited);
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@ -535,7 +535,7 @@ cmph_uint32 bmz_search(cmph_t *mphf, const char *key, cmph_uint32 keylen)
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DEBUGP("key: %s h1: %u h2: %u\n", key, h1, h2);
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if (h1 == h2 && ++h2 > bmz->n) h2 = 0;
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DEBUGP("key: %s g[h1]: %u g[h2]: %u edges: %u\n", key, bmz->g[h1], bmz->g[h2], bmz->m);
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return ((bmz->g[h1] + bmz->g[h2]) % bmz->m);
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return (bmz->g[h1] + bmz->g[h2]);
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}
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void bmz_destroy(cmph_t *mphf)
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{
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@ -0,0 +1,547 @@
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#include "graph.h"
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#include "bmz8.h"
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#include "cmph_structs.h"
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#include "bmz8_structs.h"
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#include "hash.h"
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#include "vqueue.h"
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#include "bitbool.h"
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#include <math.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <assert.h>
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#include <string.h>
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//#define DEBUG
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#include "debug.h"
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static int bmz8_gen_edges(cmph_config_t *mph);
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static cmph_uint8 bmz8_traverse_critical_nodes(bmz8_config_data_t *bmz8, cmph_uint8 v, cmph_uint8 * biggest_g_value, cmph_uint8 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited);
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static cmph_uint8 bmz8_traverse_critical_nodes_heuristic(bmz8_config_data_t *bmz8, cmph_uint8 v, cmph_uint8 * biggest_g_value, cmph_uint8 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited);
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static void bmz8_traverse_non_critical_nodes(bmz8_config_data_t *bmz8, cmph_uint8 * used_edges, cmph_uint8 * visited);
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bmz8_config_data_t *bmz8_config_new()
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{
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bmz8_config_data_t *bmz8;
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bmz8 = (bmz8_config_data_t *)malloc(sizeof(bmz8_config_data_t));
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assert(bmz8);
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memset(bmz8, 0, sizeof(bmz8_config_data_t));
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bmz8->hashfuncs[0] = CMPH_HASH_JENKINS;
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bmz8->hashfuncs[1] = CMPH_HASH_JENKINS;
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bmz8->g = NULL;
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bmz8->graph = NULL;
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bmz8->hashes = NULL;
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return bmz8;
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}
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void bmz8_config_destroy(cmph_config_t *mph)
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{
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bmz8_config_data_t *data = (bmz8_config_data_t *)mph->data;
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DEBUGP("Destroying algorithm dependent data\n");
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free(data);
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}
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void bmz8_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs)
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{
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bmz8_config_data_t *bmz8 = (bmz8_config_data_t *)mph->data;
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CMPH_HASH *hashptr = hashfuncs;
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cmph_uint8 i = 0;
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while(*hashptr != CMPH_HASH_COUNT)
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{
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if (i >= 2) break; //bmz8 only uses two hash functions
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bmz8->hashfuncs[i] = *hashptr;
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++i, ++hashptr;
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}
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}
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cmph_t *bmz8_new(cmph_config_t *mph, float c)
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{
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cmph_t *mphf = NULL;
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bmz8_data_t *bmz8f = NULL;
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cmph_uint8 i;
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cmph_uint8 iterations;
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cmph_uint8 iterations_map = 20;
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cmph_uint8 *used_edges = NULL;
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cmph_uint8 restart_mapping = 0;
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cmph_uint8 * visited = NULL;
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bmz8_config_data_t *bmz8 = (bmz8_config_data_t *)mph->data;
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if (mph->key_source->nkeys >= 256)
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{
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if (mph->verbosity) fprintf(stderr, "The number of keys in BMZ8 must be lower than 256.\n");
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return NULL;
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}
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DEBUGP("c: %f\n", c);
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bmz8->m = mph->key_source->nkeys;
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bmz8->n = ceil(c * mph->key_source->nkeys);
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DEBUGP("m (edges): %u n (vertices): %u c: %f\n", bmz8->m, bmz8->n, c);
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bmz8->graph = graph_new(bmz8->n, bmz8->m);
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DEBUGP("Created graph\n");
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bmz8->hashes = (hash_state_t **)malloc(sizeof(hash_state_t *)*3);
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for(i = 0; i < 3; ++i) bmz8->hashes[i] = NULL;
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do
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{
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// Mapping step
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cmph_uint8 biggest_g_value = 0;
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cmph_uint8 biggest_edge_value = 1;
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iterations = 100;
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if (mph->verbosity)
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{
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fprintf(stderr, "Entering mapping step for mph creation of %u keys with graph sized %u\n", bmz8->m, bmz8->n);
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}
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while(1)
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{
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int ok;
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DEBUGP("hash function 1\n");
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bmz8->hashes[0] = hash_state_new(bmz8->hashfuncs[0], bmz8->n);
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DEBUGP("hash function 2\n");
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bmz8->hashes[1] = hash_state_new(bmz8->hashfuncs[1], bmz8->n);
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DEBUGP("Generating edges\n");
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ok = bmz8_gen_edges(mph);
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if (!ok)
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{
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--iterations;
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hash_state_destroy(bmz8->hashes[0]);
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bmz8->hashes[0] = NULL;
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hash_state_destroy(bmz8->hashes[1]);
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bmz8->hashes[1] = NULL;
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DEBUGP("%u iterations remaining\n", iterations);
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if (mph->verbosity)
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{
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fprintf(stderr, "simple graph creation failure - %u iterations remaining\n", iterations);
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}
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if (iterations == 0) break;
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}
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else break;
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}
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if (iterations == 0)
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{
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graph_destroy(bmz8->graph);
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return NULL;
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}
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// Ordering step
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if (mph->verbosity)
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{
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fprintf(stderr, "Starting ordering step\n");
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}
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graph_obtain_critical_nodes(bmz8->graph);
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// Searching step
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if (mph->verbosity)
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{
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fprintf(stderr, "Starting Searching step.\n");
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fprintf(stderr, "\tTraversing critical vertices.\n");
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}
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DEBUGP("Searching step\n");
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visited = (char *)malloc(bmz8->n/8 + 1);
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memset(visited, 0, bmz8->n/8 + 1);
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used_edges = (cmph_uint8 *)malloc(bmz8->m/8 + 1);
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memset(used_edges, 0, bmz8->m/8 + 1);
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free(bmz8->g);
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bmz8->g = calloc(bmz8->n, sizeof(cmph_uint8));
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assert(bmz8->g);
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for (i = 0; i < bmz8->n; ++i) // critical nodes
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{
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if (graph_node_is_critical(bmz8->graph, i) && (!GETBIT(visited,i)))
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{
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if(c > 1.14) restart_mapping = bmz8_traverse_critical_nodes(bmz8, i, &biggest_g_value, &biggest_edge_value, used_edges, visited);
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else restart_mapping = bmz8_traverse_critical_nodes_heuristic(bmz8, i, &biggest_g_value, &biggest_edge_value, used_edges, visited);
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if(restart_mapping) break;
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}
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}
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if(!restart_mapping)
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{
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if (mph->verbosity)
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{
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fprintf(stderr, "\tTraversing non critical vertices.\n");
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}
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bmz8_traverse_non_critical_nodes(bmz8, used_edges, visited); // non_critical_nodes
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}
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else
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{
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iterations_map--;
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if (mph->verbosity) fprintf(stderr, "Restarting mapping step. %u iterations remaining.\n", iterations_map);
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}
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free(used_edges);
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free(visited);
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}while(restart_mapping && iterations_map > 0);
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graph_destroy(bmz8->graph);
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bmz8->graph = NULL;
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if (iterations_map == 0)
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{
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return NULL;
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}
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mphf = (cmph_t *)malloc(sizeof(cmph_t));
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mphf->algo = mph->algo;
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bmz8f = (bmz8_data_t *)malloc(sizeof(bmz8_data_t));
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bmz8f->g = bmz8->g;
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bmz8->g = NULL; //transfer memory ownership
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bmz8f->hashes = bmz8->hashes;
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bmz8->hashes = NULL; //transfer memory ownership
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bmz8f->n = bmz8->n;
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bmz8f->m = bmz8->m;
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mphf->data = bmz8f;
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mphf->size = bmz8->m;
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DEBUGP("Successfully generated minimal perfect hash\n");
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if (mph->verbosity)
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{
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fprintf(stderr, "Successfully generated minimal perfect hash function\n");
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}
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return mphf;
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}
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static cmph_uint8 bmz8_traverse_critical_nodes(bmz8_config_data_t *bmz8, cmph_uint8 v, cmph_uint8 * biggest_g_value, cmph_uint8 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited)
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{
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cmph_uint8 next_g;
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cmph_uint32 u; /* Auxiliary vertex */
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cmph_uint32 lav; /* lookahead vertex */
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cmph_uint8 collision;
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vqueue_t * q = vqueue_new((cmph_uint32)(graph_ncritical_nodes(bmz8->graph)));
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graph_iterator_t it, it1;
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DEBUGP("Labelling critical vertices\n");
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bmz8->g[v] = (cmph_uint8)ceil ((double)(*biggest_edge_value)/2) - 1;
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SETBIT(visited, v);
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next_g = (cmph_uint8)floor((double)(*biggest_edge_value/2)); /* next_g is incremented in the do..while statement*/
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vqueue_insert(q, v);
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while(!vqueue_is_empty(q))
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{
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v = vqueue_remove(q);
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it = graph_neighbors_it(bmz8->graph, v);
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while ((u = graph_next_neighbor(bmz8->graph, &it)) != GRAPH_NO_NEIGHBOR)
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{
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if (graph_node_is_critical(bmz8->graph, u) && (!GETBIT(visited,u)))
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{
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collision = 1;
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while(collision) // lookahead to resolve collisions
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{
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next_g = *biggest_g_value + 1;
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it1 = graph_neighbors_it(bmz8->graph, u);
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collision = 0;
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while((lav = graph_next_neighbor(bmz8->graph, &it1)) != GRAPH_NO_NEIGHBOR)
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{
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if (graph_node_is_critical(bmz8->graph, lav) && GETBIT(visited,lav))
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{
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if(next_g + bmz8->g[lav] >= bmz8->m)
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{
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vqueue_destroy(q);
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return 1; // restart mapping step.
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}
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if (GETBIT(used_edges, next_g + bmz8->g[lav]))
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{
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collision = 1;
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break;
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}
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}
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}
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if (next_g > *biggest_g_value) *biggest_g_value = next_g;
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}
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// Marking used edges...
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it1 = graph_neighbors_it(bmz8->graph, u);
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while((lav = graph_next_neighbor(bmz8->graph, &it1)) != GRAPH_NO_NEIGHBOR)
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{
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if (graph_node_is_critical(bmz8->graph, lav) && GETBIT(visited, lav))
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{
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SETBIT(used_edges,next_g + bmz8->g[lav]);
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if(next_g + bmz8->g[lav] > *biggest_edge_value) *biggest_edge_value = next_g + bmz8->g[lav];
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}
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}
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bmz8->g[u] = next_g; // Labelling vertex u.
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SETBIT(visited,u);
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vqueue_insert(q, u);
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}
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}
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}
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vqueue_destroy(q);
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return 0;
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}
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static cmph_uint8 bmz8_traverse_critical_nodes_heuristic(bmz8_config_data_t *bmz8, cmph_uint8 v, cmph_uint8 * biggest_g_value, cmph_uint8 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited)
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{
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cmph_uint8 next_g;
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cmph_uint32 u; /* Auxiliary vertex */
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cmph_uint32 lav; /* lookahead vertex */
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cmph_uint8 collision;
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cmph_uint8 * unused_g_values = NULL;
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cmph_uint8 unused_g_values_capacity = 0;
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cmph_uint8 nunused_g_values = 0;
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vqueue_t * q = vqueue_new((cmph_uint32)(graph_ncritical_nodes(bmz8->graph)));
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graph_iterator_t it, it1;
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DEBUGP("Labelling critical vertices\n");
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bmz8->g[v] = (cmph_uint8)ceil ((double)(*biggest_edge_value)/2) - 1;
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SETBIT(visited, v);
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next_g = (cmph_uint8)floor((double)(*biggest_edge_value/2)); /* next_g is incremented in the do..while statement*/
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vqueue_insert(q, v);
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while(!vqueue_is_empty(q))
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{
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v = vqueue_remove(q);
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it = graph_neighbors_it(bmz8->graph, v);
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while ((u = graph_next_neighbor(bmz8->graph, &it)) != GRAPH_NO_NEIGHBOR)
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{
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if (graph_node_is_critical(bmz8->graph, u) && (!GETBIT(visited,u)))
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{
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cmph_uint8 next_g_index = 0;
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collision = 1;
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while(collision) // lookahead to resolve collisions
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{
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if (next_g_index < nunused_g_values)
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{
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next_g = unused_g_values[next_g_index++];
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}
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else
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{
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next_g = *biggest_g_value + 1;
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next_g_index = 255;//UINT_MAX;
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}
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it1 = graph_neighbors_it(bmz8->graph, u);
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collision = 0;
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while((lav = graph_next_neighbor(bmz8->graph, &it1)) != GRAPH_NO_NEIGHBOR)
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{
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if (graph_node_is_critical(bmz8->graph, lav) && GETBIT(visited,lav))
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{
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if(next_g + bmz8->g[lav] >= bmz8->m)
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{
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vqueue_destroy(q);
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free(unused_g_values);
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return 1; // restart mapping step.
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}
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if (GETBIT(used_edges, next_g + bmz8->g[lav]))
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{
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collision = 1;
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break;
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}
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}
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}
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if(collision && (next_g > *biggest_g_value)) // saving the current g value stored in next_g.
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{
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if(nunused_g_values == unused_g_values_capacity)
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{
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unused_g_values = realloc(unused_g_values, (unused_g_values_capacity + BUFSIZ)*sizeof(cmph_uint8));
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unused_g_values_capacity += BUFSIZ;
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}
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unused_g_values[nunused_g_values++] = next_g;
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}
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if (next_g > *biggest_g_value) *biggest_g_value = next_g;
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}
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next_g_index--;
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if (next_g_index < nunused_g_values) unused_g_values[next_g_index] = unused_g_values[--nunused_g_values];
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// Marking used edges...
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it1 = graph_neighbors_it(bmz8->graph, u);
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while((lav = graph_next_neighbor(bmz8->graph, &it1)) != GRAPH_NO_NEIGHBOR)
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{
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if (graph_node_is_critical(bmz8->graph, lav) && GETBIT(visited, lav))
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{
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SETBIT(used_edges,next_g + bmz8->g[lav]);
|
||||
if(next_g + bmz8->g[lav] > *biggest_edge_value) *biggest_edge_value = next_g + bmz8->g[lav];
|
||||
}
|
||||
}
|
||||
bmz8->g[u] = next_g; // Labelling vertex u.
|
||||
SETBIT(visited, u);
|
||||
vqueue_insert(q, u);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
vqueue_destroy(q);
|
||||
free(unused_g_values);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static cmph_uint8 next_unused_edge(bmz8_config_data_t *bmz8, cmph_uint8 * used_edges, cmph_uint8 unused_edge_index)
|
||||
{
|
||||
while(1)
|
||||
{
|
||||
assert(unused_edge_index < bmz8->m);
|
||||
if(GETBIT(used_edges, unused_edge_index)) unused_edge_index ++;
|
||||
else break;
|
||||
}
|
||||
return unused_edge_index;
|
||||
}
|
||||
|
||||
static void bmz8_traverse(bmz8_config_data_t *bmz8, cmph_uint8 * used_edges, cmph_uint8 v, cmph_uint8 * unused_edge_index, cmph_uint8 * visited)
|
||||
{
|
||||
graph_iterator_t it = graph_neighbors_it(bmz8->graph, v);
|
||||
cmph_uint32 neighbor = 0;
|
||||
while((neighbor = graph_next_neighbor(bmz8->graph, &it)) != GRAPH_NO_NEIGHBOR)
|
||||
{
|
||||
if(GETBIT(visited,neighbor)) continue;
|
||||
DEBUGP("Visiting neighbor %u\n", neighbor);
|
||||
*unused_edge_index = next_unused_edge(bmz8, used_edges, *unused_edge_index);
|
||||
bmz8->g[neighbor] = *unused_edge_index - bmz8->g[v];
|
||||
SETBIT(visited, neighbor);
|
||||
(*unused_edge_index)++;
|
||||
bmz8_traverse(bmz8, used_edges, neighbor, unused_edge_index, visited);
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
static void bmz8_traverse_non_critical_nodes(bmz8_config_data_t *bmz8, cmph_uint8 * used_edges, cmph_uint8 * visited)
|
||||
{
|
||||
|
||||
cmph_uint8 i, v1, v2, unused_edge_index = 0;
|
||||
DEBUGP("Labelling non critical vertices\n");
|
||||
for(i = 0; i < bmz8->m; i++)
|
||||
{
|
||||
v1 = graph_vertex_id(bmz8->graph, i, 0);
|
||||
v2 = graph_vertex_id(bmz8->graph, i, 1);
|
||||
if((GETBIT(visited,v1) && GETBIT(visited,v2)) || (!GETBIT(visited,v1) && !GETBIT(visited,v2))) continue;
|
||||
if(GETBIT(visited,v1)) bmz8_traverse(bmz8, used_edges, v1, &unused_edge_index, visited);
|
||||
else bmz8_traverse(bmz8, used_edges, v2, &unused_edge_index, visited);
|
||||
|
||||
}
|
||||
|
||||
for(i = 0; i < bmz8->n; i++)
|
||||
{
|
||||
if(!GETBIT(visited,i))
|
||||
{
|
||||
bmz8->g[i] = 0;
|
||||
SETBIT(visited, i);
|
||||
bmz8_traverse(bmz8, used_edges, i, &unused_edge_index, visited);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
static int bmz8_gen_edges(cmph_config_t *mph)
|
||||
{
|
||||
cmph_uint8 e;
|
||||
bmz8_config_data_t *bmz8 = (bmz8_config_data_t *)mph->data;
|
||||
cmph_uint8 multiple_edges = 0;
|
||||
DEBUGP("Generating edges for %u vertices\n", bmz8->n);
|
||||
graph_clear_edges(bmz8->graph);
|
||||
mph->key_source->rewind(mph->key_source->data);
|
||||
for (e = 0; e < mph->key_source->nkeys; ++e)
|
||||
{
|
||||
cmph_uint8 h1, h2;
|
||||
cmph_uint32 keylen;
|
||||
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(bmz8->hashes[0], key, keylen) % bmz8->n;
|
||||
h2 = hash(bmz8->hashes[1], key, keylen) % bmz8->n;
|
||||
if (h1 == h2) if (++h2 >= bmz8->n) h2 = 0;
|
||||
if (h1 == h2)
|
||||
{
|
||||
if (mph->verbosity) fprintf(stderr, "Self loop for key %u\n", e);
|
||||
mph->key_source->dispose(mph->key_source->data, key, keylen);
|
||||
return 0;
|
||||
}
|
||||
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(bmz8->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.
|
||||
graph_add_edge(bmz8->graph, h1, h2);
|
||||
}
|
||||
return !multiple_edges;
|
||||
}
|
||||
|
||||
int bmz8_dump(cmph_t *mphf, FILE *fd)
|
||||
{
|
||||
char *buf = NULL;
|
||||
cmph_uint32 buflen;
|
||||
cmph_uint8 i;
|
||||
cmph_uint8 two = 2; //number of hash functions
|
||||
bmz8_data_t *data = (bmz8_data_t *)mphf->data;
|
||||
cmph_uint8 nn, nm;
|
||||
__cmph_dump(mphf, fd);
|
||||
|
||||
fwrite(&two, sizeof(cmph_uint8), 1, fd);
|
||||
|
||||
hash_state_dump(data->hashes[0], &buf, &buflen);
|
||||
DEBUGP("Dumping hash state with %u bytes to disk\n", buflen);
|
||||
fwrite(&buflen, sizeof(cmph_uint32), 1, fd);
|
||||
fwrite(buf, buflen, 1, fd);
|
||||
free(buf);
|
||||
|
||||
hash_state_dump(data->hashes[1], &buf, &buflen);
|
||||
DEBUGP("Dumping hash state with %u bytes to disk\n", buflen);
|
||||
fwrite(&buflen, sizeof(cmph_uint32), 1, fd);
|
||||
fwrite(buf, buflen, 1, fd);
|
||||
free(buf);
|
||||
|
||||
fwrite(&(data->n), sizeof(cmph_uint8), 1, fd);
|
||||
fwrite(&(data->m), sizeof(cmph_uint8), 1, fd);
|
||||
|
||||
fwrite(data->g, sizeof(cmph_uint8)*(data->n), 1, fd);
|
||||
#ifdef DEBUG
|
||||
fprintf(stderr, "G: ");
|
||||
for (i = 0; i < data->n; ++i) fprintf(stderr, "%u ", data->g[i]);
|
||||
fprintf(stderr, "\n");
|
||||
#endif
|
||||
return 1;
|
||||
}
|
||||
|
||||
void bmz8_load(FILE *f, cmph_t *mphf)
|
||||
{
|
||||
cmph_uint8 nhashes;
|
||||
char *buf = NULL;
|
||||
cmph_uint32 buflen;
|
||||
cmph_uint8 i;
|
||||
bmz8_data_t *bmz8 = (bmz8_data_t *)malloc(sizeof(bmz8_data_t));
|
||||
|
||||
DEBUGP("Loading bmz8 mphf\n");
|
||||
mphf->data = bmz8;
|
||||
fread(&nhashes, sizeof(cmph_uint8), 1, f);
|
||||
bmz8->hashes = (hash_state_t **)malloc(sizeof(hash_state_t *)*(nhashes + 1));
|
||||
bmz8->hashes[nhashes] = NULL;
|
||||
DEBUGP("Reading %u hashes\n", nhashes);
|
||||
for (i = 0; i < nhashes; ++i)
|
||||
{
|
||||
hash_state_t *state = NULL;
|
||||
fread(&buflen, sizeof(cmph_uint32), 1, f);
|
||||
DEBUGP("Hash state has %u bytes\n", buflen);
|
||||
buf = (char *)malloc(buflen);
|
||||
fread(buf, buflen, 1, f);
|
||||
state = hash_state_load(buf, buflen);
|
||||
bmz8->hashes[i] = state;
|
||||
free(buf);
|
||||
}
|
||||
|
||||
DEBUGP("Reading m and n\n");
|
||||
fread(&(bmz8->n), sizeof(cmph_uint8), 1, f);
|
||||
fread(&(bmz8->m), sizeof(cmph_uint8), 1, f);
|
||||
|
||||
bmz8->g = (cmph_uint8 *)malloc(sizeof(cmph_uint8)*bmz8->n);
|
||||
fread(bmz8->g, bmz8->n*sizeof(cmph_uint8), 1, f);
|
||||
#ifdef DEBUG
|
||||
fprintf(stderr, "G: ");
|
||||
for (i = 0; i < bmz8->n; ++i) fprintf(stderr, "%u ", bmz8->g[i]);
|
||||
fprintf(stderr, "\n");
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
cmph_uint8 bmz8_search(cmph_t *mphf, const char *key, cmph_uint32 keylen)
|
||||
{
|
||||
bmz8_data_t *bmz8 = mphf->data;
|
||||
cmph_uint8 h1 = hash(bmz8->hashes[0], key, keylen) % bmz8->n;
|
||||
cmph_uint8 h2 = hash(bmz8->hashes[1], key, keylen) % bmz8->n;
|
||||
DEBUGP("key: %s h1: %u h2: %u\n", key, h1, h2);
|
||||
if (h1 == h2 && ++h2 > bmz8->n) h2 = 0;
|
||||
DEBUGP("key: %s g[h1]: %u g[h2]: %u edges: %u\n", key, bmz8->g[h1], bmz8->g[h2], bmz8->m);
|
||||
return (bmz8->g[h1] + bmz8->g[h2]);
|
||||
}
|
||||
void bmz8_destroy(cmph_t *mphf)
|
||||
{
|
||||
bmz8_data_t *data = (bmz8_data_t *)mphf->data;
|
||||
free(data->g);
|
||||
hash_state_destroy(data->hashes[0]);
|
||||
hash_state_destroy(data->hashes[1]);
|
||||
free(data->hashes);
|
||||
free(data);
|
||||
free(mphf);
|
||||
}
|
|
@ -0,0 +1,18 @@
|
|||
#ifndef __CMPH_BMZ8_H__
|
||||
#define __CMPH_BMZ8_H__
|
||||
|
||||
#include "cmph.h"
|
||||
|
||||
typedef struct __bmz8_data_t bmz8_data_t;
|
||||
typedef struct __bmz8_config_data_t bmz8_config_data_t;
|
||||
|
||||
bmz8_config_data_t *bmz8_config_new();
|
||||
void bmz8_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs);
|
||||
void bmz8_config_destroy(cmph_config_t *mph);
|
||||
cmph_t *bmz8_new(cmph_config_t *mph, float c);
|
||||
|
||||
void bmz8_load(FILE *f, cmph_t *mphf);
|
||||
int bmz8_dump(cmph_t *mphf, FILE *f);
|
||||
void bmz8_destroy(cmph_t *mphf);
|
||||
cmph_uint8 bmz8_search(cmph_t *mphf, const char *key, cmph_uint32 keylen);
|
||||
#endif
|
|
@ -0,0 +1,25 @@
|
|||
#ifndef __CMPH_BMZ8_STRUCTS_H__
|
||||
#define __CMPH_BMZ8_STRUCTS_H__
|
||||
|
||||
#include "hash_state.h"
|
||||
|
||||
struct __bmz8_data_t
|
||||
{
|
||||
cmph_uint8 m; //edges (words) count
|
||||
cmph_uint8 n; //vertex count
|
||||
cmph_uint8 *g;
|
||||
hash_state_t **hashes;
|
||||
};
|
||||
|
||||
|
||||
struct __bmz8_config_data_t
|
||||
{
|
||||
CMPH_HASH hashfuncs[2];
|
||||
cmph_uint8 m; //edges (words) count
|
||||
cmph_uint8 n; //vertex count
|
||||
graph_t *graph;
|
||||
cmph_uint8 *g;
|
||||
hash_state_t **hashes;
|
||||
};
|
||||
|
||||
#endif
|
39
src/cmph.c
39
src/cmph.c
|
@ -2,6 +2,7 @@
|
|||
#include "cmph_structs.h"
|
||||
#include "chm.h"
|
||||
#include "bmz.h"
|
||||
#include "bmz8.h" /* included -- Fabiano */
|
||||
#include "brz.h" /* included -- Fabiano */
|
||||
|
||||
#include <stdlib.h>
|
||||
|
@ -10,7 +11,7 @@
|
|||
//#define DEBUG
|
||||
#include "debug.h"
|
||||
|
||||
const char *cmph_names[] = { "bmz", "chm", "brz", NULL }; /* included -- Fabiano */
|
||||
const char *cmph_names[] = { "bmz", "bmz8", "chm", "brz", NULL }; /* included -- Fabiano */
|
||||
|
||||
static cmph_uint32 position; // access position when data is a vector
|
||||
|
||||
|
@ -154,6 +155,9 @@ void cmph_config_set_algo(cmph_config_t *mph, CMPH_ALGO algo)
|
|||
case CMPH_BMZ:
|
||||
bmz_config_destroy(mph);
|
||||
break;
|
||||
case CMPH_BMZ8:
|
||||
bmz8_config_destroy(mph);
|
||||
break;
|
||||
case CMPH_BRZ:
|
||||
brz_config_destroy(mph);
|
||||
break;
|
||||
|
@ -168,9 +172,11 @@ void cmph_config_set_algo(cmph_config_t *mph, CMPH_ALGO algo)
|
|||
case CMPH_BMZ:
|
||||
mph->data = bmz_config_new();
|
||||
break;
|
||||
case CMPH_BMZ8:
|
||||
mph->data = (void*)bmz8_config_new();
|
||||
break;
|
||||
case CMPH_BRZ:
|
||||
mph->data = brz_config_new();
|
||||
break;
|
||||
default:
|
||||
assert(0);
|
||||
}
|
||||
|
@ -186,6 +192,8 @@ void cmph_config_set_tmp_dir(cmph_config_t *mph, cmph_uint8 *tmp_dir)
|
|||
break;
|
||||
case CMPH_BMZ: /* included -- Fabiano */
|
||||
break;
|
||||
case CMPH_BMZ8: /* included -- Fabiano */
|
||||
break;
|
||||
case CMPH_BRZ: /* included -- Fabiano */
|
||||
brz_config_set_tmp_dir(mph, tmp_dir);
|
||||
break;
|
||||
|
@ -206,9 +214,11 @@ void cmph_config_destroy(cmph_config_t *mph)
|
|||
case CMPH_BMZ: /* included -- Fabiano */
|
||||
bmz_config_destroy(mph);
|
||||
break;
|
||||
case CMPH_BMZ8: /* included -- Fabiano */
|
||||
bmz8_config_destroy(mph);
|
||||
break;
|
||||
case CMPH_BRZ: /* included -- Fabiano */
|
||||
brz_config_destroy(mph);
|
||||
break;
|
||||
default:
|
||||
assert(0);
|
||||
}
|
||||
|
@ -230,6 +240,9 @@ void cmph_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs)
|
|||
case CMPH_BMZ: /* included -- Fabiano */
|
||||
bmz_config_set_hashfuncs(mph, hashfuncs);
|
||||
break;
|
||||
case CMPH_BMZ8: /* included -- Fabiano */
|
||||
bmz8_config_set_hashfuncs(mph, hashfuncs);
|
||||
break;
|
||||
case CMPH_BRZ: /* included -- Fabiano */
|
||||
brz_config_set_hashfuncs(mph, hashfuncs);
|
||||
break;
|
||||
|
@ -262,6 +275,11 @@ cmph_t *cmph_new(cmph_config_t *mph)
|
|||
if (c == 0) c = 1.15;
|
||||
mphf = bmz_new(mph, c);
|
||||
break;
|
||||
case CMPH_BMZ8: /* included -- Fabiano */
|
||||
DEBUGP("Creating bmz8 hash\n");
|
||||
if (c == 0) c = 1.15;
|
||||
mphf = bmz8_new(mph, c);
|
||||
break;
|
||||
case CMPH_BRZ: /* included -- Fabiano */
|
||||
DEBUGP("Creating brz hash\n");
|
||||
if (c == 0) c = 1.15;
|
||||
|
@ -279,13 +297,12 @@ int cmph_dump(cmph_t *mphf, FILE *f)
|
|||
{
|
||||
case CMPH_CHM:
|
||||
return chm_dump(mphf, f);
|
||||
break;
|
||||
case CMPH_BMZ: /* included -- Fabiano */
|
||||
return bmz_dump(mphf, f);
|
||||
break;
|
||||
case CMPH_BMZ8: /* included -- Fabiano */
|
||||
return bmz8_dump(mphf, f);
|
||||
case CMPH_BRZ: /* included -- Fabiano */
|
||||
return brz_dump(mphf, f);
|
||||
break;
|
||||
default:
|
||||
assert(0);
|
||||
}
|
||||
|
@ -309,6 +326,10 @@ cmph_t *cmph_load(FILE *f)
|
|||
DEBUGP("Loading bmz algorithm dependent parts\n");
|
||||
bmz_load(f, mphf);
|
||||
break;
|
||||
case CMPH_BMZ8: /* included -- Fabiano */
|
||||
DEBUGP("Loading bmz8 algorithm dependent parts\n");
|
||||
bmz8_load(f, mphf);
|
||||
break;
|
||||
case CMPH_BRZ: /* included -- Fabiano */
|
||||
DEBUGP("Loading brz algorithm dependent parts\n");
|
||||
brz_load(f, mphf);
|
||||
|
@ -331,6 +352,9 @@ cmph_uint32 cmph_search(cmph_t *mphf, const char *key, cmph_uint32 keylen)
|
|||
case CMPH_BMZ: /* included -- Fabiano */
|
||||
DEBUGP("bmz algorithm search\n");
|
||||
return bmz_search(mphf, key, keylen);
|
||||
case CMPH_BMZ8: /* included -- Fabiano */
|
||||
DEBUGP("bmz8 algorithm search\n");
|
||||
return bmz8_search(mphf, key, keylen);
|
||||
case CMPH_BRZ: /* included -- Fabiano */
|
||||
DEBUGP("brz algorithm search\n");
|
||||
return brz_search(mphf, key, keylen);
|
||||
|
@ -356,6 +380,9 @@ void cmph_destroy(cmph_t *mphf)
|
|||
case CMPH_BMZ: /* included -- Fabiano */
|
||||
bmz_destroy(mphf);
|
||||
return;
|
||||
case CMPH_BMZ8: /* included -- Fabiano */
|
||||
bmz8_destroy(mphf);
|
||||
return;
|
||||
case CMPH_BRZ: /* included -- Fabiano */
|
||||
brz_destroy(mphf);
|
||||
return;
|
||||
|
|
|
@ -9,7 +9,7 @@ typedef float cmph_float32;
|
|||
typedef enum { CMPH_HASH_DJB2, CMPH_HASH_FNV, CMPH_HASH_JENKINS,
|
||||
CMPH_HASH_SDBM, CMPH_HASH_COUNT } CMPH_HASH;
|
||||
extern const char *cmph_hash_names[];
|
||||
typedef enum { CMPH_BMZ, CMPH_CHM, CMPH_BRZ, CMPH_COUNT } CMPH_ALGO; /* included -- Fabiano */
|
||||
typedef enum { CMPH_BMZ, CMPH_BMZ8, CMPH_CHM, CMPH_BRZ, CMPH_COUNT } CMPH_ALGO; /* included -- Fabiano */
|
||||
extern const char *cmph_names[];
|
||||
|
||||
#endif
|
||||
|
|
Loading…
Reference in New Issue