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This commit is contained in:
fc_botelho 2008-03-23 00:46:34 +00:00
parent ffd364c68a
commit 39e68583d3
18 changed files with 851 additions and 246 deletions
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4
src/Makefile.am
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@ -6,9 +6,6 @@ libcmph_la_SOURCES = debug.h\
cmph_types.h\
hash.h hash_state.h hash.c\
jenkins_hash.h jenkins_hash.c\
djb2_hash.h djb2_hash.c\
sdbm_hash.h sdbm_hash.c\
fnv_hash.h fnv_hash.c\
vstack.h vstack.c\
vqueue.h vqueue.c\
graph.h graph.c\
@ -17,6 +14,7 @@ libcmph_la_SOURCES = debug.h\
chm.h chm_structs.h chm.c\
bmz.h bmz_structs.h bmz.c\
bmz8.h bmz8_structs.h bmz8.c\
bdz.h bdz_structs.h bdz.c\
buffer_manager.h buffer_manager.c\
buffer_entry.h buffer_entry.c\
brz.h brz_structs.h brz.c\

599
src/bdz.c Executable file
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@ -0,0 +1,599 @@
#include "bdz.h"
#include "cmph_structs.h"
#include "bdz_structs.h"
#include "hash.h"
#include "bitbool.h"
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
//#define DEBUG
#include "debug.h"
#define UNASSIGNED 3
#define NULL_EDGE 0xffffffff
//cmph_uint32 ngrafos = 0;
//cmph_uint32 ngrafos_aciclicos = 0;
// table used for looking up the number of assigned vertices a 8-bit integer
const cmph_uint8 bdz_lookup_table[] =
{
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 1, 1, 1, 1, 0
};
typedef struct
{
cmph_uint32 vertices[3];
cmph_uint32 next_edges[3];
}bdz_edge_t;
typedef cmph_uint32 * bdz_queue_t;
static void bdz_alloc_queue(bdz_queue_t * queuep, cmph_uint32 nedges)
{
(*queuep)=malloc(nedges*sizeof(cmph_uint32));
};
static void bdz_free_queue(bdz_queue_t * queue)
{
free(*queue);
};
typedef struct
{
cmph_uint32 nedges;
bdz_edge_t * edges;
cmph_uint32 * first_edge;
cmph_uint8 * vert_degree;
}bdz_graph3_t;
static void bdz_alloc_graph3(bdz_graph3_t * graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
graph3->edges=malloc(nedges*sizeof(bdz_edge_t));
graph3->first_edge=malloc(nvertices*sizeof(cmph_uint32));
graph3->vert_degree=malloc(nvertices);
};
static void bdz_init_graph3(bdz_graph3_t * graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
memset(graph3->first_edge,0xff,nvertices*sizeof(cmph_uint32));
memset(graph3->vert_degree,0,nvertices);
graph3->nedges=0;
};
static void bdz_free_graph3(bdz_graph3_t *graph3)
{
free(graph3->edges);
free(graph3->first_edge);
free(graph3->vert_degree);
};
static void bdz_partial_free_graph3(bdz_graph3_t *graph3)
{
free(graph3->first_edge);
free(graph3->vert_degree);
graph3->first_edge = NULL;
graph3->vert_degree = NULL;
};
static void bdz_add_edge(bdz_graph3_t * graph3, cmph_uint32 v0, cmph_uint32 v1, cmph_uint32 v2)
{
graph3->edges[graph3->nedges].vertices[0]=v0;
graph3->edges[graph3->nedges].vertices[1]=v1;
graph3->edges[graph3->nedges].vertices[2]=v2;
graph3->edges[graph3->nedges].next_edges[0]=graph3->first_edge[v0];
graph3->edges[graph3->nedges].next_edges[1]=graph3->first_edge[v1];
graph3->edges[graph3->nedges].next_edges[2]=graph3->first_edge[v2];
graph3->first_edge[v0]=graph3->first_edge[v1]=graph3->first_edge[v2]=graph3->nedges;
graph3->vert_degree[v0]++;
graph3->vert_degree[v1]++;
graph3->vert_degree[v2]++;
graph3->nedges++;
};
static void bdz_dump_graph(bdz_graph3_t* graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
int i;
for(i=0;i<nedges;i++){
printf("\nedge %d %d %d %d ",i,graph3->edges[i].vertices[0],
graph3->edges[i].vertices[1],graph3->edges[i].vertices[2]);
printf(" nexts %d %d %d",graph3->edges[i].next_edges[0],
graph3->edges[i].next_edges[1],graph3->edges[i].next_edges[2]);
};
for(i=0;i<nvertices;i++){
printf("\nfirst for vertice %d %d ",i,graph3->first_edge[i]);
};
};
static void bdz_remove_edge(bdz_graph3_t * graph3, cmph_uint32 curr_edge)
{
cmph_uint32 i,j=0,vert,edge1,edge2;
for(i=0;i<3;i++){
vert=graph3->edges[curr_edge].vertices[i];
edge1=graph3->first_edge[vert];
edge2=NULL_EDGE;
while(edge1!=curr_edge&&edge1!=NULL_EDGE){
edge2=edge1;
if(graph3->edges[edge1].vertices[0]==vert){
j=0;
} else if(graph3->edges[edge1].vertices[1]==vert){
j=1;
} else
j=2;
edge1=graph3->edges[edge1].next_edges[j];
};
if(edge1==NULL_EDGE){
printf("\nerror remove edge %d dump graph",curr_edge);
bdz_dump_graph(graph3,graph3->nedges,graph3->nedges+graph3->nedges/4);
exit(-1);
};
if(edge2!=NULL_EDGE){
graph3->edges[edge2].next_edges[j] =
graph3->edges[edge1].next_edges[i];
} else
graph3->first_edge[vert]=
graph3->edges[edge1].next_edges[i];
graph3->vert_degree[vert]--;
};
};
static int bdz_generate_queue(cmph_uint32 nedges, cmph_uint32 nvertices, bdz_queue_t queue, bdz_graph3_t* graph3)
{
cmph_uint32 i,v0,v1,v2;
cmph_uint32 queue_head=0,queue_tail=0;
cmph_uint32 curr_edge;
cmph_uint32 tmp_edge;
cmph_uint8 * marked_edge =malloc((nedges >> 3) + 1);
memset(marked_edge, 0, (nedges >> 3) + 1);
for(i=0;i<nedges;i++){
v0=graph3->edges[i].vertices[0];
v1=graph3->edges[i].vertices[1];
v2=graph3->edges[i].vertices[2];
if(graph3->vert_degree[v0]==1 ||
graph3->vert_degree[v1]==1 ||
graph3->vert_degree[v2]==1){
if(!GETBIT(marked_edge,i)) {
queue[queue_head++]=i;
SETBIT(marked_edge,i);
}
};
};
while(queue_tail!=queue_head){
curr_edge=queue[queue_tail++];
bdz_remove_edge(graph3,curr_edge);
v0=graph3->edges[curr_edge].vertices[0];
v1=graph3->edges[curr_edge].vertices[1];
v2=graph3->edges[curr_edge].vertices[2];
if(graph3->vert_degree[v0]==1 ) {
tmp_edge=graph3->first_edge[v0];
if(!GETBIT(marked_edge,tmp_edge)) {
queue[queue_head++]=tmp_edge;
SETBIT(marked_edge,tmp_edge);
};
};
if(graph3->vert_degree[v1]==1) {
tmp_edge=graph3->first_edge[v1];
if(!GETBIT(marked_edge,tmp_edge)){
queue[queue_head++]=tmp_edge;
SETBIT(marked_edge,tmp_edge);
};
};
if(graph3->vert_degree[v2]==1){
tmp_edge=graph3->first_edge[v2];
if(!GETBIT(marked_edge,tmp_edge)){
queue[queue_head++]=tmp_edge;
SETBIT(marked_edge,tmp_edge);
};
};
};
free(marked_edge);
return queue_head-nedges;/* returns 0 if successful otherwies return negative number*/
};
static int bdz_mapping(cmph_config_t *mph, bdz_graph3_t* graph3, bdz_queue_t queue);
static void assigning(bdz_config_data_t *bdz, bdz_graph3_t* graph3, bdz_queue_t queue);
static void ranking(bdz_config_data_t *bdz);
static cmph_uint32 rank(bdz_data_t *bdz, cmph_uint32 vertex);
bdz_config_data_t *bdz_config_new()
{
bdz_config_data_t *bdz;
bdz = (bdz_config_data_t *)malloc(sizeof(bdz_config_data_t));
assert(bdz);
memset(bdz, 0, sizeof(bdz_config_data_t));
bdz->hashfunc = CMPH_HASH_JENKINS;
bdz->g = NULL;
bdz->hl = NULL;
bdz->k = 0; //kth index in ranktable, $k = log_2(n=3r)/\varepsilon$
bdz->b = 7; // number of bits of k
bdz->ranktablesize = 0; //number of entries in ranktable, $n/k +1$
bdz->ranktable = NULL; // rank table
return bdz;
}
void bdz_config_destroy(cmph_config_t *mph)
{
bdz_config_data_t *data = (bdz_config_data_t *)mph->data;
DEBUGP("Destroying algorithm dependent data\n");
free(data);
}
void bdz_config_set_b(cmph_config_t *mph, cmph_uint8 b)
{
bdz_config_data_t *bdz = (bdz_config_data_t *)mph->data;
if (b <= 2) b = 7; // validating restrictions over parameter b.
bdz->b = b;
DEBUGP("b: %u\n", b);
}
void bdz_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs)
{
bdz_config_data_t *bdz = (bdz_config_data_t *)mph->data;
CMPH_HASH *hashptr = hashfuncs;
cmph_uint32 i = 0;
while(*hashptr != CMPH_HASH_COUNT)
{
if (i >= 1) break; //bdz only uses one linear hash function
bdz->hashfunc = *hashptr;
++i, ++hashptr;
}
}
cmph_t *bdz_new(cmph_config_t *mph, float c)
{
cmph_t *mphf = NULL;
bdz_data_t *bdzf = NULL;
cmph_uint32 iterations;
bdz_queue_t edges;
bdz_graph3_t graph3;
bdz_config_data_t *bdz = (bdz_config_data_t *)mph->data;
if (c == 0) c = 1.25; // validating restrictions over parameter c.
DEBUGP("c: %f\n", c);
bdz->m = mph->key_source->nkeys;
bdz->r = ceil((c * mph->key_source->nkeys)/3);
bdz->n = 3*bdz->r;
bdz->k = (1 << bdz->b);
DEBUGP("b: %u -- k: %u\n", bdz->b, bdz->k);
bdz->ranktablesize = bdz->n/bdz->k + 2;
DEBUGP("ranktablesize: %u\n", bdz->ranktablesize);
bdz_alloc_graph3(&graph3, bdz->m, bdz->n);
bdz_alloc_queue(&edges,bdz->m);
DEBUGP("Created hypergraph\n");
DEBUGP("m (edges): %u n (vertices): %u r: %u c: %f \n", bdz->m, bdz->n, bdz->r, c);
// Mapping step
iterations = 1000;
if (mph->verbosity)
{
fprintf(stderr, "Entering mapping step for mph creation of %u keys with graph sized %u\n", bdz->m, bdz->n);
}
while(1)
{
int ok;
DEBUGP("linear hash function \n");
bdz->hl = hash_state_new(bdz->hashfunc, 15);
ok = bdz_mapping(mph, &graph3, edges);
//ok = 0;
if (!ok)
{
--iterations;
hash_state_destroy(bdz->hl);
bdz->hl = NULL;
DEBUGP("%u iterations remaining\n", iterations);
if (mph->verbosity)
{
fprintf(stderr, "acyclic graph creation failure - %u iterations remaining\n", iterations);
}
if (iterations == 0) break;
}
else break;
}
if (iterations == 0)
{
bdz_free_queue(&edges);
bdz_free_graph3(&graph3);
return NULL;
}
bdz_partial_free_graph3(&graph3);
// Assigning step
if (mph->verbosity)
{
fprintf(stderr, "Entering assigning step for mph creation of %u keys with graph sized %u\n", bdz->m, bdz->n);
}
assigning(bdz, &graph3, edges);
bdz_free_queue(&edges);
bdz_free_graph3(&graph3);
if (mph->verbosity)
{
fprintf(stderr, "Entering ranking step for mph creation of %u keys with graph sized %u\n", bdz->m, bdz->n);
}
ranking(bdz);
mphf = (cmph_t *)malloc(sizeof(cmph_t));
mphf->algo = mph->algo;
bdzf = (bdz_data_t *)malloc(sizeof(bdz_data_t));
bdzf->g = bdz->g;
bdz->g = NULL; //transfer memory ownership
bdzf->hl = bdz->hl;
bdz->hl = NULL; //transfer memory ownership
bdzf->ranktable = bdz->ranktable;
bdz->ranktable = NULL; //transfer memory ownership
bdzf->ranktablesize = bdz->ranktablesize;
bdzf->k = bdz->k;
bdzf->b = bdz->b;
bdzf->n = bdz->n;
bdzf->m = bdz->m;
bdzf->r = bdz->r;
mphf->data = bdzf;
mphf->size = bdz->m;
DEBUGP("Successfully generated minimal perfect hash\n");
if (mph->verbosity)
{
fprintf(stderr, "Successfully generated minimal perfect hash function\n");
}
return mphf;
}
static int bdz_mapping(cmph_config_t *mph, bdz_graph3_t* graph3, bdz_queue_t queue)
{
cmph_uint32 e;
int cycles = 0;
cmph_uint32 hl[3];
bdz_config_data_t *bdz = (bdz_config_data_t *)mph->data;
bdz_init_graph3(graph3, bdz->m, bdz->n);
mph->key_source->rewind(mph->key_source->data);
for (e = 0; e < mph->key_source->nkeys; ++e)
{
cmph_uint32 h0, h1, h2;
cmph_uint32 keylen;
char *key = NULL;
mph->key_source->read(mph->key_source->data, &key, &keylen);
hash_vector(bdz->hl, key, keylen,hl);
h0 = hl[0] % bdz->r;
h1 = hl[1] % bdz->r + bdz->r;
h2 = hl[2] % bdz->r + (bdz->r << 1);
mph->key_source->dispose(mph->key_source->data, key, keylen);
bdz_add_edge(graph3,h0,h1,h2);
}
cycles = bdz_generate_queue(bdz->m, bdz->n, queue, graph3);
return (cycles == 0);
}
static void assigning(bdz_config_data_t *bdz, bdz_graph3_t* graph3, bdz_queue_t queue)
{
cmph_uint32 i;
cmph_uint32 nedges=graph3->nedges;
cmph_uint32 curr_edge;
cmph_uint32 v0,v1,v2;
cmph_uint8 * marked_vertices =malloc((bdz->n >> 3) + 1);
bdz->g = (cmph_uint8 *)calloc((bdz->n >> 2)+1, sizeof(cmph_uint8));
memset(marked_vertices, 0, (bdz->n >> 3) + 1);
memset(bdz->g, 0xff, (bdz->n >> 2) + 1);
for(i=nedges-1;i+1>=1;i--){
curr_edge=queue[i];
v0=graph3->edges[curr_edge].vertices[0];
v1=graph3->edges[curr_edge].vertices[1];
v2=graph3->edges[curr_edge].vertices[2];
DEBUGP("B:%u %u %u -- %u %u %u\n", v0, v1, v2, GETVALUE(bdz->g, v0), GETVALUE(bdz->g, v1), GETVALUE(bdz->g, v2));
if(!GETBIT(marked_vertices, v0)){
if(!GETBIT(marked_vertices,v1))
{
SETVALUE(bdz->g, v1, UNASSIGNED);
SETBIT(marked_vertices, v1);
}
if(!GETBIT(marked_vertices,v2))
{
SETVALUE(bdz->g, v2, UNASSIGNED);
SETBIT(marked_vertices, v2);
}
SETVALUE(bdz->g, v0, (6-(GETVALUE(bdz->g, v1) + GETVALUE(bdz->g,v2)))%3);
SETBIT(marked_vertices, v0);
} else if(!GETBIT(marked_vertices, v1)) {
if(!GETBIT(marked_vertices, v2))
{
SETVALUE(bdz->g, v2, UNASSIGNED);
SETBIT(marked_vertices, v2);
}
SETVALUE(bdz->g, v1, (7-(GETVALUE(bdz->g, v0)+GETVALUE(bdz->g, v2)))%3);
SETBIT(marked_vertices, v1);
}else {
SETVALUE(bdz->g, v2, (8-(GETVALUE(bdz->g,v0)+GETVALUE(bdz->g, v1)))%3);
SETBIT(marked_vertices, v2);
}
DEBUGP("A:%u %u %u -- %u %u %u\n", v0, v1, v2, GETVALUE(bdz->g, v0), GETVALUE(bdz->g, v1), GETVALUE(bdz->g, v2));
};
free(marked_vertices);
}
static void ranking(bdz_config_data_t *bdz)
{
cmph_uint32 i, j, offset = 0, count = 0, size = (bdz->k >> 2), nbytes_total = (bdz->n >> 2)+1, nbytes;
bdz->ranktable = (cmph_uint32 *)calloc(bdz->ranktablesize, sizeof(cmph_uint32));
// ranktable computation
bdz->ranktable[0] = 0;
i = 1;
while(1)
{
nbytes = size < nbytes_total? size : nbytes_total;
for(j = 0; j < nbytes; j++)
{
count += bdz_lookup_table[*(bdz->g + offset + j)];
}
if(i == bdz->ranktablesize) fprintf(stderr, "i:%u == bdz->ranktablesize:%u\n", i, bdz->ranktablesize);
assert(i < bdz->ranktablesize);
bdz->ranktable[i] = count;
offset += nbytes;
if(size >= nbytes_total) break;
nbytes_total -= size;
i++;
}
}
int bdz_dump(cmph_t *mphf, FILE *fd)
{
char *buf = NULL;
cmph_uint32 buflen;
bdz_data_t *data = (bdz_data_t *)mphf->data;
__cmph_dump(mphf, fd);
hash_state_dump(data->hl, &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_uint32), 1, fd);
fwrite(&(data->m), sizeof(cmph_uint32), 1, fd);
fwrite(&(data->r), sizeof(cmph_uint32), 1, fd);
fwrite(data->g, sizeof(cmph_uint8)*((data->n >> 2) +1), 1, fd);
fwrite(&(data->k), sizeof(cmph_uint32), 1, fd);
fwrite(&(data->b), sizeof(cmph_uint8), 1, fd);
fwrite(&(data->ranktablesize), sizeof(cmph_uint32), 1, fd);
fwrite(data->ranktable, sizeof(cmph_uint32)*(data->ranktablesize), 1, fd);
#ifdef DEBUG
cmph_uint32 i;
fprintf(stderr, "G: ");
for (i = 0; i < data->n; ++i) fprintf(stderr, "%u ", GETVALUE(data->g, i));
fprintf(stderr, "\n");
#endif
return 1;
}
void bdz_load(FILE *f, cmph_t *mphf)
{
char *buf = NULL;
cmph_uint32 buflen;
bdz_data_t *bdz = (bdz_data_t *)malloc(sizeof(bdz_data_t));
DEBUGP("Loading bdz mphf\n");
mphf->data = bdz;
fread(&buflen, sizeof(cmph_uint32), 1, f);
DEBUGP("Hash state has %u bytes\n", buflen);
buf = (char *)malloc(buflen);
fread(buf, buflen, 1, f);
bdz->hl = hash_state_load(buf, buflen);
free(buf);
DEBUGP("Reading m and n\n");
fread(&(bdz->n), sizeof(cmph_uint32), 1, f);
fread(&(bdz->m), sizeof(cmph_uint32), 1, f);
fread(&(bdz->r), sizeof(cmph_uint32), 1, f);
bdz->g = (cmph_uint8 *)calloc((bdz->n >> 2) + 1, sizeof(cmph_uint8));
fread(bdz->g, ((bdz->n >> 2) + 1)*sizeof(cmph_uint8), 1, f);
fread(&(bdz->k), sizeof(cmph_uint32), 1, f);
fread(&(bdz->b), sizeof(cmph_uint8), 1, f);
fread(&(bdz->ranktablesize), sizeof(cmph_uint32), 1, f);
bdz->ranktable = (cmph_uint32 *)calloc(bdz->ranktablesize, sizeof(cmph_uint32));
fread(bdz->ranktable, sizeof(cmph_uint32)*(bdz->ranktablesize), 1, f);
#ifdef DEBUG
fprintf(stderr, "G: ");
for (i = 0; i < bdz->n; ++i) fprintf(stderr, "%u ", GETVALUE(bdz->g,i));
fprintf(stderr, "\n");
#endif
return;
}
cmph_uint32 bdz_search_ph(cmph_t *mphf, const char *key, cmph_uint32 keylen)
{
bdz_data_t *bdz = mphf->data;
cmph_uint32 hl[3];
hash_vector(bdz->hl, key, keylen, hl);
cmph_uint32 vertex;
hl[0] = hl[0] % bdz->r;
hl[1] = hl[1] % bdz->r + bdz->r;
hl[2] = hl[2] % bdz->r + (bdz->r << 1);
vertex = hl[(GETVALUE(bdz->g, hl[0]) + GETVALUE(bdz->g, hl[1]) + GETVALUE(bdz->g, hl[2])) % 3];
return vertex;
}
static inline cmph_uint32 rank(bdz_data_t *bdz, cmph_uint32 vertex)
{
cmph_uint32 index = vertex >> bdz->b;
cmph_uint32 base_rank = bdz->ranktable[index];
cmph_uint32 beg_idx_v = index << bdz->b;
cmph_uint32 beg_idx_b = beg_idx_v >> 2;
cmph_uint32 end_idx_b = vertex >> 2;
while(beg_idx_b < end_idx_b)
{
base_rank += bdz_lookup_table[*(bdz->g + beg_idx_b++)];
}
beg_idx_v = beg_idx_b << 2;
while(beg_idx_v < vertex)
{
if(GETVALUE(bdz->g, beg_idx_v) != UNASSIGNED) base_rank++;
beg_idx_v++;
}
return base_rank;
}
cmph_uint32 bdz_search(cmph_t *mphf, const char *key, cmph_uint32 keylen)
{
bdz_data_t *bdz = mphf->data;
cmph_uint32 hl[3];
hash_vector(bdz->hl, key, keylen, hl);
cmph_uint32 vertex;
hl[0] = hl[0] % bdz->r;
hl[1] = hl[1] % bdz->r + bdz->r;
hl[2] = hl[2] % bdz->r + (bdz->r << 1);
vertex = hl[(GETVALUE(bdz->g, hl[0]) + GETVALUE(bdz->g, hl[1]) + GETVALUE(bdz->g, hl[2])) % 3];
return rank(bdz, vertex);
}
void bdz_destroy(cmph_t *mphf)
{
bdz_data_t *data = (bdz_data_t *)mphf->data;
free(data->g);
hash_state_destroy(data->hl);
free(data->ranktable);
free(data);
free(mphf);
}

19
src/bdz.h Executable file
View File

@ -0,0 +1,19 @@
#ifndef __CMPH_BDZ_H__
#define __CMPH_BDZ_H__
#include "cmph.h"
typedef struct __bdz_data_t bdz_data_t;
typedef struct __bdz_config_data_t bdz_config_data_t;
bdz_config_data_t *bdz_config_new();
void bdz_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs);
void bdz_config_destroy(cmph_config_t *mph);
void bdz_config_set_b(cmph_config_t *mph, cmph_uint8 b);
cmph_t *bdz_new(cmph_config_t *mph, float c);
void bdz_load(FILE *f, cmph_t *mphf);
int bdz_dump(cmph_t *mphf, FILE *f);
void bdz_destroy(cmph_t *mphf);
cmph_uint32 bdz_search(cmph_t *mphf, const char *key, cmph_uint32 keylen);
#endif

33
src/bdz_gen_lookup_table.c Executable file
View File

@ -0,0 +1,33 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void help(char * prname)
{
fprintf(stderr, "USE: %s <n><wordsizeinbits>\n", prname);
exit(1);
}
int main(int argc, char ** argv)
{
if(argc != 3) help(argv[0]);
int n = atoi(argv[1]);
int wordsize = (atoi(argv[2]) >> 1);
int i, j, n_assigned;
for(i = 0; i < n; i++)
{
int num = i;
n_assigned = 0;
for(j = 0; j < wordsize; j++)
{
if ((num & 0x0003) != 3)
{
n_assigned++;
//fprintf(stderr, "num:%d\n", num);
}
num = num >> 2;
}
if(i%16 == 0) fprintf(stderr, "\n");
fprintf(stderr, "%d, ", n_assigned);
}
fprintf(stderr, "\n");
}

36
src/bdz_structs.h Executable file
View File

@ -0,0 +1,36 @@
#ifndef __CMPH_BDZ_STRUCTS_H__
#define __CMPH_BDZ_STRUCTS_H__
#include "hash_state.h"
struct __bdz_data_t
{
cmph_uint32 m; //edges (words) count
cmph_uint32 n; //vertex count
cmph_uint32 r; //partition vertex count
cmph_uint8 *g;
hash_state_t *hl; // linear hashing
cmph_uint32 k; //kth index in ranktable, $k = log_2(n=3r)/\varepsilon$
cmph_uint8 b; // number of bits of k
cmph_uint32 ranktablesize; //number of entries in ranktable, $n/k +1$
cmph_uint32 *ranktable; // rank table
};
struct __bdz_config_data_t
{
cmph_uint32 m; //edges (words) count
cmph_uint32 n; //vertex count
cmph_uint32 r; //partition vertex count
cmph_uint8 *g;
hash_state_t *hl; // linear hashing
cmph_uint32 k; //kth index in ranktable, $k = log_2(n=3r)/\varepsilon$
cmph_uint8 b; // number of bits of k
cmph_uint32 ranktablesize; //number of entries in ranktable, $n/k +1$
cmph_uint32 *ranktable; // rank table
CMPH_HASH hashfunc;
};
#endif

1
src/bitbool.c
View File

@ -1,2 +1,3 @@
#include "bitbool.h"
const cmph_uint8 bitmask[] = { 1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7 };
const cmph_uint8 valuemask[] = { 0xfc, 0xf3, 0xcf, 0x3f};

15
src/bitbool.h
View File

@ -2,8 +2,17 @@
#define _CMPH_BITBOOL_H__
#include "cmph_types.h"
extern const cmph_uint8 bitmask[];
#define GETBIT(array, i) (array[(i) / 8] & bitmask[(i) % 8])
#define SETBIT(array, i) (array[(i) / 8] |= bitmask[(i) % 8])
#define UNSETBIT(array, i) (array[(i) / 8] &= (~(bitmask[(i) % 8])))
#define GETBIT(array, i) ((array[i >> 3] & bitmask[i & 0x00000007]) >> (i & 0x00000007))
#define SETBIT(array, i) (array[i >> 3] |= bitmask[i & 0x00000007])
#define UNSETBIT(array, i) (array[i >> 3] &= (~(bitmask[i & 0x00000007])))
//#define GETBIT(array, i) (array[(i) / 8] & bitmask[(i) % 8])
//#define SETBIT(array, i) (array[(i) / 8] |= bitmask[(i) % 8])
//#define UNSETBIT(array, i) (array[(i) / 8] &= (~(bitmask[(i) % 8])))
extern const cmph_uint8 valuemask[];
#define SETVALUE(array, i, v) (array[i >> 2] &= ((v << ((i & 0x00000003) << 1)) | valuemask[i & 0x00000003]))
#define GETVALUE(array, i) ((array[i >> 2] >> ((i & 0x00000003) << 1)) & 0x00000003)
#endif

8
src/bmz.c
View File

@ -226,7 +226,7 @@ static cmph_uint8 bmz_traverse_critical_nodes(bmz_config_data_t *bmz, cmph_uint3
vqueue_destroy(q);
return 1; // restart mapping step.
}
if (GETBIT(used_edges, next_g + bmz->g[lav]))
if (GETBIT(used_edges, (next_g + bmz->g[lav])))
{
collision = 1;
break;
@ -241,7 +241,7 @@ static cmph_uint8 bmz_traverse_critical_nodes(bmz_config_data_t *bmz, cmph_uint3
{
if (graph_node_is_critical(bmz->graph, lav) && GETBIT(visited, lav))
{
SETBIT(used_edges,next_g + bmz->g[lav]);
SETBIT(used_edges,(next_g + bmz->g[lav]));
if(next_g + bmz->g[lav] > *biggest_edge_value) *biggest_edge_value = next_g + bmz->g[lav];
}
}
@ -306,7 +306,7 @@ static cmph_uint8 bmz_traverse_critical_nodes_heuristic(bmz_config_data_t *bmz,
free(unused_g_values);
return 1; // restart mapping step.
}
if (GETBIT(used_edges, next_g + bmz->g[lav]))
if (GETBIT(used_edges, (next_g + bmz->g[lav])))
{
collision = 1;
break;
@ -334,7 +334,7 @@ static cmph_uint8 bmz_traverse_critical_nodes_heuristic(bmz_config_data_t *bmz,
{
if (graph_node_is_critical(bmz->graph, lav) && GETBIT(visited, lav))
{
SETBIT(used_edges,next_g + bmz->g[lav]);
SETBIT(used_edges,(next_g + bmz->g[lav]));
if(next_g + bmz->g[lav] > *biggest_edge_value) *biggest_edge_value = next_g + bmz->g[lav];
}
}

8
src/bmz8.c
View File

@ -233,7 +233,7 @@ static cmph_uint8 bmz8_traverse_critical_nodes(bmz8_config_data_t *bmz8, cmph_ui
vqueue_destroy(q);
return 1; // restart mapping step.
}
if (GETBIT(used_edges, next_g + bmz8->g[lav]))
if (GETBIT(used_edges, (next_g + bmz8->g[lav])))
{
collision = 1;
break;
@ -248,7 +248,7 @@ static cmph_uint8 bmz8_traverse_critical_nodes(bmz8_config_data_t *bmz8, cmph_ui
{
if (graph_node_is_critical(bmz8->graph, lav) && GETBIT(visited, lav))
{
SETBIT(used_edges,next_g + bmz8->g[lav]);
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];
}
}
@ -313,7 +313,7 @@ static cmph_uint8 bmz8_traverse_critical_nodes_heuristic(bmz8_config_data_t *bmz
free(unused_g_values);
return 1; // restart mapping step.
}
if (GETBIT(used_edges, next_g + bmz8->g[lav]))
if (GETBIT(used_edges, (next_g + bmz8->g[lav])))
{
collision = 1;
break;
@ -342,7 +342,7 @@ static cmph_uint8 bmz8_traverse_critical_nodes_heuristic(bmz8_config_data_t *bmz
{
if (graph_node_is_critical(bmz8->graph, lav) && GETBIT(visited, lav))
{
SETBIT(used_edges,next_g + bmz8->g[lav]);
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];
}
}

131
src/cmph
View File

@ -1,131 +0,0 @@
#! /bin/bash
# cmph - temporary wrapper script for .libs/cmph
# Generated by ltmain.sh - GNU libtool 1.5.24 Debian 1.5.24-1ubuntu1 (1.1220.2.456 2007/06/24 02:25:32)
#
# The cmph program cannot be directly executed until all the libtool
# libraries that it depends on are installed.
#
# This wrapper script should never be moved out of the build directory.
# If it is, it will not operate correctly.
# Sed substitution that helps us do robust quoting. It backslashifies
# metacharacters that are still active within double-quoted strings.
Xsed='/bin/sed -e 1s/^X//'
sed_quote_subst='s/\([\\`\\"$\\\\]\)/\\\1/g'
# Be Bourne compatible (taken from Autoconf:_AS_BOURNE_COMPATIBLE).
if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
emulate sh
NULLCMD=:
# Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
# is contrary to our usage. Disable this feature.
alias -g '${1+"$@"}'='"$@"'
setopt NO_GLOB_SUBST
else
case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac
fi
BIN_SH=xpg4; export BIN_SH # for Tru64
DUALCASE=1; export DUALCASE # for MKS sh
# The HP-UX ksh and POSIX shell print the target directory to stdout
# if CDPATH is set.
(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
relink_command="(cd /home/fbotelho/doutorado/algoritmos/cmph/src; { test -z \"\${LIBRARY_PATH+set}\" || unset LIBRARY_PATH || { LIBRARY_PATH=; export LIBRARY_PATH; }; }; { test -z \"\${COMPILER_PATH+set}\" || unset COMPILER_PATH || { COMPILER_PATH=; export COMPILER_PATH; }; }; { test -z \"\${GCC_EXEC_PREFIX+set}\" || unset GCC_EXEC_PREFIX || { GCC_EXEC_PREFIX=; export GCC_EXEC_PREFIX; }; }; { test -z \"\${LD_RUN_PATH+set}\" || unset LD_RUN_PATH || { LD_RUN_PATH=; export LD_RUN_PATH; }; }; { test -z \"\${LD_LIBRARY_PATH+set}\" || unset LD_LIBRARY_PATH || { LD_LIBRARY_PATH=; export LD_LIBRARY_PATH; }; }; PATH=\"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games\"; export PATH; gcc -Wall -Werror -o \$progdir/\$file main.o wingetopt.o -lm ./.libs/libcmph.so -Wl,--rpath -Wl,/home/fbotelho/doutorado/algoritmos/cmph/src/.libs ) "
# This environment variable determines our operation mode.
if test "$libtool_install_magic" = "%%%MAGIC variable%%%"; then
# install mode needs the following variable:
notinst_deplibs=' libcmph.la'
else
# When we are sourced in execute mode, $file and $echo are already set.
if test "$libtool_execute_magic" != "%%%MAGIC variable%%%"; then
echo="echo"
file="$0"
# Make sure echo works.
if test "X$1" = X--no-reexec; then
# Discard the --no-reexec flag, and continue.
shift
elif test "X`($echo '\t') 2>/dev/null`" = 'X\t'; then
# Yippee, $echo works!
:
else
# Restart under the correct shell, and then maybe $echo will work.
exec /bin/bash "$0" --no-reexec ${1+"$@"}
fi
fi
# Find the directory that this script lives in.
thisdir=`$echo "X$file" | $Xsed -e 's%/[^/]*$%%'`
test "x$thisdir" = "x$file" && thisdir=.
# Follow symbolic links until we get to the real thisdir.
file=`ls -ld "$file" | /bin/sed -n 's/.*-> //p'`
while test -n "$file"; do
destdir=`$echo "X$file" | $Xsed -e 's%/[^/]*$%%'`
# If there was a directory component, then change thisdir.
if test "x$destdir" != "x$file"; then
case "$destdir" in
[\\/]* | [A-Za-z]:[\\/]*) thisdir="$destdir" ;;
*) thisdir="$thisdir/$destdir" ;;
esac
fi
file=`$echo "X$file" | $Xsed -e 's%^.*/%%'`
file=`ls -ld "$thisdir/$file" | /bin/sed -n 's/.*-> //p'`
done
# Try to get the absolute directory name.
absdir=`cd "$thisdir" && pwd`
test -n "$absdir" && thisdir="$absdir"
program=lt-'cmph'
progdir="$thisdir/.libs"
if test ! -f "$progdir/$program" || \
{ file=`ls -1dt "$progdir/$program" "$progdir/../$program" 2>/dev/null | /bin/sed 1q`; \
test "X$file" != "X$progdir/$program"; }; then
file="$$-$program"
if test ! -d "$progdir"; then
mkdir "$progdir"
else
rm -f "$progdir/$file"
fi
# relink executable if necessary
if test -n "$relink_command"; then
if relink_command_output=`eval $relink_command 2>&1`; then :
else
echo "$relink_command_output" >&2
rm -f "$progdir/$file"
exit 1
fi
fi
mv -f "$progdir/$file" "$progdir/$program" 2>/dev/null ||
{ rm -f "$progdir/$program";
mv -f "$progdir/$file" "$progdir/$program"; }
rm -f "$progdir/$file"
fi
if test -f "$progdir/$program"; then
if test "$libtool_execute_magic" != "%%%MAGIC variable%%%"; then
# Run the actual program with our arguments.
exec "$progdir/$program" ${1+"$@"}
$echo "$0: cannot exec $program $*"
exit 1
fi
else
# The program doesn't exist.
$echo "$0: error: \`$progdir/$program' does not exist" 1>&2
$echo "This script is just a wrapper for $program." 1>&2
echo "See the libtool documentation for more information." 1>&2
exit 1
fi
fi

43
src/cmph.c
View File

@ -1,10 +1,11 @@
#include "cmph.h"
#include "cmph_structs.h"
#include "chm.h"
#include "bmz.h"
#include "bmz.h" /* included -- Fabiano */
#include "bmz8.h" /* included -- Fabiano */
#include "brz.h" /* included -- Fabiano */
#include "fch.h" /* included -- Fabiano */
#include "bdz.h" /* included -- Fabiano */
#include <stdlib.h>
#include <assert.h>
@ -12,7 +13,7 @@
//#define DEBUG
#include "debug.h"
const char *cmph_names[] = { "bmz", "bmz8", "chm", "brz", "fch", NULL }; /* included -- Fabiano */
const char *cmph_names[] = { "bmz", "bmz8", "chm", "brz", "fch", "bdz", NULL }; /* included -- Fabiano */
typedef struct
{
@ -223,6 +224,9 @@ void cmph_config_set_algo(cmph_config_t *mph, CMPH_ALGO algo)
case CMPH_FCH:
fch_config_destroy(mph);
break;
case CMPH_BDZ:
bdz_config_destroy(mph);
break;
default:
assert(0);
}
@ -243,6 +247,9 @@ void cmph_config_set_algo(cmph_config_t *mph, CMPH_ALGO algo)
case CMPH_FCH:
mph->data = fch_config_new();
break;
case CMPH_BDZ:
mph->data = bdz_config_new();
break;
default:
assert(0);
}
@ -273,6 +280,10 @@ void cmph_config_set_b(cmph_config_t *mph, cmph_uint8 b)
{
brz_config_set_b(mph, b);
}
else if (mph->algo == CMPH_BDZ)
{
bdz_config_set_b(mph, b);
}
}
void cmph_config_set_memory_availability(cmph_config_t *mph, cmph_uint32 memory_availability)
@ -295,13 +306,16 @@ void cmph_config_destroy(cmph_config_t *mph)
bmz_config_destroy(mph);
break;
case CMPH_BMZ8: /* included -- Fabiano */
bmz8_config_destroy(mph);
bmz8_config_destroy(mph);
break;
case CMPH_BRZ: /* included -- Fabiano */
brz_config_destroy(mph);
brz_config_destroy(mph);
break;
case CMPH_FCH: /* included -- Fabiano */
fch_config_destroy(mph);
fch_config_destroy(mph);
break;
case CMPH_BDZ: /* included -- Fabiano */
bdz_config_destroy(mph);
break;
default:
assert(0);
@ -333,6 +347,9 @@ void cmph_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs)
case CMPH_FCH: /* included -- Fabiano */
fch_config_set_hashfuncs(mph, hashfuncs);
break;
case CMPH_BDZ: /* included -- Fabiano */
bdz_config_set_hashfuncs(mph, hashfuncs);
break;
default:
break;
}
@ -374,6 +391,10 @@ cmph_t *cmph_new(cmph_config_t *mph)
DEBUGP("Creating fch hash\n");
mphf = fch_new(mph, c);
break;
case CMPH_BDZ: /* included -- Fabiano */
DEBUGP("Creating bdz hash\n");
mphf = bdz_new(mph, c);
break;
default:
assert(0);
}
@ -394,6 +415,8 @@ int cmph_dump(cmph_t *mphf, FILE *f)
return brz_dump(mphf, f);
case CMPH_FCH: /* included -- Fabiano */
return fch_dump(mphf, f);
case CMPH_BDZ: /* included -- Fabiano */
return bdz_dump(mphf, f);
default:
assert(0);
}
@ -429,6 +452,10 @@ cmph_t *cmph_load(FILE *f)
DEBUGP("Loading fch algorithm dependent parts\n");
fch_load(f, mphf);
break;
case CMPH_BDZ: /* included -- Fabiano */
DEBUGP("Loading bdz algorithm dependent parts\n");
bdz_load(f, mphf);
break;
default:
assert(0);
}
@ -456,6 +483,9 @@ cmph_uint32 cmph_search(cmph_t *mphf, const char *key, cmph_uint32 keylen)
case CMPH_FCH: /* included -- Fabiano */
DEBUGP("fch algorithm search\n");
return fch_search(mphf, key, keylen);
case CMPH_BDZ: /* included -- Fabiano */
DEBUGP("bdz algorithm search\n");
return bdz_search(mphf, key, keylen);
default:
assert(0);
}
@ -487,6 +517,9 @@ void cmph_destroy(cmph_t *mphf)
case CMPH_FCH: /* included -- Fabiano */
fch_destroy(mphf);
return;
case CMPH_BDZ: /* included -- Fabiano */
bdz_destroy(mphf);
return;
default:
assert(0);
}

5
src/cmph_types.h
View File

@ -6,10 +6,9 @@ typedef unsigned short cmph_uint16;
typedef unsigned int cmph_uint32;
typedef float cmph_float32;
typedef enum { CMPH_HASH_DJB2, CMPH_HASH_FNV, CMPH_HASH_JENKINS,
CMPH_HASH_SDBM, CMPH_HASH_COUNT } CMPH_HASH;
typedef enum { CMPH_HASH_JENKINS, CMPH_HASH_COUNT } CMPH_HASH;
extern const char *cmph_hash_names[];
typedef enum { CMPH_BMZ, CMPH_BMZ8, CMPH_CHM, CMPH_BRZ, CMPH_FCH, CMPH_COUNT } CMPH_ALGO; /* included -- Fabiano */
typedef enum { CMPH_BMZ, CMPH_BMZ8, CMPH_CHM, CMPH_BRZ, CMPH_FCH, CMPH_BDZ, CMPH_COUNT } CMPH_ALGO; /* included -- Fabiano */
extern const char *cmph_names[];
#endif

66
src/hash.c
View File

@ -7,7 +7,7 @@
//#define DEBUG
#include "debug.h"
const char *cmph_hash_names[] = { "djb2", "fnv", "jenkins", "sdbm", NULL };
const char *cmph_hash_names[] = { "jenkins", NULL };
hash_state_t *hash_state_new(CMPH_HASH hashfunc, cmph_uint32 hashsize)
{
@ -19,15 +19,6 @@ hash_state_t *hash_state_new(CMPH_HASH hashfunc, cmph_uint32 hashsize)
state = (hash_state_t *)jenkins_state_new(hashsize);
DEBUGP("Jenkins function created\n");
break;
case CMPH_HASH_DJB2:
state = (hash_state_t *)djb2_state_new();
break;
case CMPH_HASH_SDBM:
state = (hash_state_t *)sdbm_state_new();
break;
case CMPH_HASH_FNV:
state = (hash_state_t *)fnv_state_new();
break;
default:
assert(0);
}
@ -40,12 +31,6 @@ cmph_uint32 hash(hash_state_t *state, const char *key, cmph_uint32 keylen)
{
case CMPH_HASH_JENKINS:
return jenkins_hash((jenkins_state_t *)state, key, keylen);
case CMPH_HASH_DJB2:
return djb2_hash((djb2_state_t *)state, key, keylen);
case CMPH_HASH_SDBM:
return sdbm_hash((sdbm_state_t *)state, key, keylen);
case CMPH_HASH_FNV:
return fnv_hash((fnv_state_t *)state, key, keylen);
default:
assert(0);
}
@ -53,6 +38,19 @@ cmph_uint32 hash(hash_state_t *state, const char *key, cmph_uint32 keylen)
return 0;
}
void hash_vector(hash_state_t *state, const char *key, cmph_uint32 keylen, cmph_uint32 * hashes)
{
switch (state->hashfunc)
{
case CMPH_HASH_JENKINS:
jenkins_hash_vector((jenkins_state_t *)state, key, keylen, hashes);
break;
default:
assert(0);
}
}
void hash_state_dump(hash_state_t *state, char **buf, cmph_uint32 *buflen)
{
char *algobuf;
@ -62,18 +60,6 @@ void hash_state_dump(hash_state_t *state, char **buf, cmph_uint32 *buflen)
jenkins_state_dump((jenkins_state_t *)state, &algobuf, buflen);
if (*buflen == UINT_MAX) return;
break;
case CMPH_HASH_DJB2:
djb2_state_dump((djb2_state_t *)state, &algobuf, buflen);
if (*buflen == UINT_MAX) return;
break;
case CMPH_HASH_SDBM:
sdbm_state_dump((sdbm_state_t *)state, &algobuf, buflen);
if (*buflen == UINT_MAX) return;
break;
case CMPH_HASH_FNV:
fnv_state_dump((fnv_state_t *)state, &algobuf, buflen);
if (*buflen == UINT_MAX) return;
break;
default:
assert(0);
}
@ -94,15 +80,6 @@ hash_state_t * hash_state_copy(hash_state_t *src_state)
case CMPH_HASH_JENKINS:
dest_state = (hash_state_t *)jenkins_state_copy((jenkins_state_t *)src_state);
break;
case CMPH_HASH_DJB2:
dest_state = (hash_state_t *)djb2_state_copy((djb2_state_t *)src_state);
break;
case CMPH_HASH_SDBM:
dest_state = (hash_state_t *)sdbm_state_copy((sdbm_state_t *)src_state);
break;
case CMPH_HASH_FNV:
dest_state = (hash_state_t *)fnv_state_copy((fnv_state_t *)src_state);
break;
default:
assert(0);
}
@ -129,12 +106,6 @@ hash_state_t *hash_state_load(const char *buf, cmph_uint32 buflen)
{
case CMPH_HASH_JENKINS:
return (hash_state_t *)jenkins_state_load(buf + offset, buflen - offset);
case CMPH_HASH_DJB2:
return (hash_state_t *)djb2_state_load(buf + offset, buflen - offset);
case CMPH_HASH_SDBM:
return (hash_state_t *)sdbm_state_load(buf + offset, buflen - offset);
case CMPH_HASH_FNV:
return (hash_state_t *)fnv_state_load(buf + offset, buflen - offset);
default:
return NULL;
}
@ -147,15 +118,6 @@ void hash_state_destroy(hash_state_t *state)
case CMPH_HASH_JENKINS:
jenkins_state_destroy((jenkins_state_t *)state);
break;
case CMPH_HASH_DJB2:
djb2_state_destroy((djb2_state_t *)state);
break;
case CMPH_HASH_SDBM:
sdbm_state_destroy((sdbm_state_t *)state);
break;
case CMPH_HASH_FNV:
fnv_state_destroy((fnv_state_t *)state);
break;
default:
assert(0);
}

19
src/hash.h
View File

@ -6,10 +6,29 @@
typedef union __hash_state_t hash_state_t;
hash_state_t *hash_state_new(CMPH_HASH, cmph_uint32 hashsize);
/** \fn cmph_uint32 hash(hash_state_t *state, const char *key, cmph_uint32 keylen);
* \param state is a pointer to a hash_state_t structure
* \param key is a pointer to a key
* \param keylen is the key length
* \return an integer that represents a hash value of 32 bits.
*/
cmph_uint32 hash(hash_state_t *state, const char *key, cmph_uint32 keylen);
/** \fn void hash_vector(hash_state_t *state, const char *key, cmph_uint32 keylen, cmph_uint32 * hashes);
* \param state is a pointer to a hash_state_t structure
* \param key is a pointer to a key
* \param keylen is the key length
* \param hashes is a pointer to a memory large enough to fit three 32-bit integers.
*/
void hash_vector(hash_state_t *state, const char *key, cmph_uint32 keylen, cmph_uint32 * hashes);
void hash_state_dump(hash_state_t *state, char **buf, cmph_uint32 *buflen);
hash_state_t * hash_state_copy(hash_state_t *src_state);
hash_state_t *hash_state_load(const char *buf, cmph_uint32 buflen);
void hash_state_destroy(hash_state_t *state);
#endif

6
src/hash_state.h
View File

@ -3,16 +3,10 @@
#include "hash.h"
#include "jenkins_hash.h"
#include "djb2_hash.h"
#include "sdbm_hash.h"
#include "fnv_hash.h"
union __hash_state_t
{
CMPH_HASH hashfunc;
jenkins_state_t jenkins;
djb2_state_t djb2;
sdbm_state_t sdbm;
fnv_state_t fnv;
};
#endif

53
src/jenkins_hash.c
View File

@ -159,6 +159,59 @@ cmph_uint32 jenkins_hash(jenkins_state_t *state, const char *k, cmph_uint32 keyl
return c;
}
void jenkins_hash_vector(jenkins_state_t *state, const char *k, cmph_uint32 keylen, cmph_uint32 * hashes)
{
cmph_uint32 len, length;
/* Set up the internal state */
length = keylen;
len = length;
hashes[0] = hashes[1] = 0x9e3779b9; /* the golden ratio; an arbitrary value */
hashes[2] = state->seed; /* the previous hash value - seed in our case */
/*---------------------------------------- handle most of the key */
while (len >= 12)
{
hashes[0] += (k[0] +((cmph_uint32)k[1]<<8) +((cmph_uint32)k[2]<<16) +((cmph_uint32)k[3]<<24));
hashes[1] += (k[4] +((cmph_uint32)k[5]<<8) +((cmph_uint32)k[6]<<16) +((cmph_uint32)k[7]<<24));
hashes[2] += (k[8] +((cmph_uint32)k[9]<<8) +((cmph_uint32)k[10]<<16)+((cmph_uint32)k[11]<<24));
mix(hashes[0],hashes[1],hashes[2]);
k += 12; len -= 12;
}
/*------------------------------------- handle the last 11 bytes */
hashes[2] += length;
switch(len) /* all the case statements fall through */
{
case 11:
hashes[2] +=((cmph_uint32)k[10]<<24);
case 10:
hashes[2] +=((cmph_uint32)k[9]<<16);
case 9 :
hashes[2] +=((cmph_uint32)k[8]<<8);
/* the first byte of hashes[2] is reserved for the length */
case 8 :
hashes[1] +=((cmph_uint32)k[7]<<24);
case 7 :
hashes[1] +=((cmph_uint32)k[6]<<16);
case 6 :
hashes[1] +=((cmph_uint32)k[5]<<8);
case 5 :
hashes[1] +=k[4];
case 4 :
hashes[0] +=((cmph_uint32)k[3]<<24);
case 3 :
hashes[0] +=((cmph_uint32)k[2]<<16);
case 2 :
hashes[0] +=((cmph_uint32)k[1]<<8);
case 1 :
hashes[0] +=k[0];
/* case 0: nothing left to add */
}
mix(hashes[0],hashes[1],hashes[2]);
}
void jenkins_state_dump(jenkins_state_t *state, char **buf, cmph_uint32 *buflen)
{
*buflen = sizeof(cmph_uint32);

16
src/jenkins_hash.h
View File

@ -10,7 +10,23 @@ typedef struct __jenkins_state_t
} jenkins_state_t;
jenkins_state_t *jenkins_state_new(cmph_uint32 size); //size of hash table
/** \fn cmph_uint32 jenkins_hash(jenkins_state_t *state, const char *k, cmph_uint32 keylen);
* \param state is a pointer to a jenkins_state_t structure
* \param key is a pointer to a key
* \param keylen is the key length
* \return an integer that represents a hash value of 32 bits.
*/
cmph_uint32 jenkins_hash(jenkins_state_t *state, const char *k, cmph_uint32 keylen);
/** \fn void jenkins_hash_vector(jenkins_state_t *state, const char *k, cmph_uint32 keylen, cmph_uint32 * hashes);
* \param state is a pointer to a jenkins_state_t structure
* \param key is a pointer to a key
* \param keylen is the key length
* \param hashes is a pointer to a memory large enough to fit three 32-bit integers.
*/
void jenkins_hash_vector(jenkins_state_t *state, const char *k, cmph_uint32 keylen, cmph_uint32 * hashes);
void jenkins_state_dump(jenkins_state_t *state, char **buf, cmph_uint32 *buflen);
jenkins_state_t *jenkins_state_copy(jenkins_state_t *src_state);
jenkins_state_t *jenkins_state_load(const char *buf, cmph_uint32 buflen);

35
src/libcmph.la
View File

@ -1,35 +0,0 @@
# libcmph.la - a libtool library file
# Generated by ltmain.sh - GNU libtool 1.5.24 Debian 1.5.24-1ubuntu1 (1.1220.2.456 2007/06/24 02:25:32)
#
# Please DO NOT delete this file!
# It is necessary for linking the library.
# The name that we can dlopen(3).
dlname='libcmph.so.0'
# Names of this library.
library_names='libcmph.so.0.0.0 libcmph.so.0 libcmph.so'
# The name of the static archive.
old_library='libcmph.a'
# Libraries that this one depends upon.
dependency_libs=' -lm'
# Version information for libcmph.
current=0
age=0
revision=0
# Is this an already installed library?
installed=no
# Should we warn about portability when linking against -modules?
shouldnotlink=no
# Files to dlopen/dlpreopen
dlopen=''
dlpreopen=''
# Directory that this library needs to be installed in:
libdir='/usr/local/lib'