motiejus/turbonss
1
Fork 0
Code Releases Activity
efe08b8080
turbonss/src/bdz_ph.c

627 lines
22 KiB
C
Executable File
Raw Blame History

#include "bdz_ph.h"
#include "cmph_structs.h"
#include "bdz_structs_ph.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
static cmph_uint8 pow3_table[5] = {1,3,9,27,81};
static cmph_uint8 lookup_table[5][256] = {
{0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0},
{0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
};
typedef struct
{
cmph_uint32 vertices[3];
cmph_uint32 next_edges[3];
}bdz_ph_edge_t;
typedef cmph_uint32 * bdz_ph_queue_t;
static void bdz_ph_alloc_queue(bdz_ph_queue_t * queuep, cmph_uint32 nedges)
{
(*queuep)=(cmph_uint32 *)malloc(nedges*sizeof(cmph_uint32));
};
static void bdz_ph_free_queue(bdz_ph_queue_t * queue)
{
free(*queue);
};
typedef struct
{
cmph_uint32 nedges;
bdz_ph_edge_t * edges;
cmph_uint32 * first_edge;
cmph_uint8 * vert_degree;
}bdz_ph_graph3_t;
static void bdz_ph_alloc_graph3(bdz_ph_graph3_t * graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
graph3->edges=(bdz_ph_edge_t *)malloc(nedges*sizeof(bdz_ph_edge_t));
graph3->first_edge=(cmph_uint32 *)malloc(nvertices*sizeof(cmph_uint32));
graph3->vert_degree=(cmph_uint8 *)malloc((size_t)nvertices);
};
static void bdz_ph_init_graph3(bdz_ph_graph3_t * graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
memset(graph3->first_edge,0xff,nvertices*sizeof(cmph_uint32));
memset(graph3->vert_degree,0,(size_t)nvertices);
graph3->nedges=0;
};
static void bdz_ph_free_graph3(bdz_ph_graph3_t *graph3)
{
free(graph3->edges);
free(graph3->first_edge);
free(graph3->vert_degree);
};
static void bdz_ph_partial_free_graph3(bdz_ph_graph3_t *graph3)
{
free(graph3->first_edge);
free(graph3->vert_degree);
graph3->first_edge = NULL;
graph3->vert_degree = NULL;
};
static void bdz_ph_add_edge(bdz_ph_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_ph_dump_graph(bdz_ph_graph3_t* graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
cmph_uint32 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_ph_remove_edge(bdz_ph_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_ph_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_ph_generate_queue(cmph_uint32 nedges, cmph_uint32 nvertices, bdz_ph_queue_t queue, bdz_ph_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 =(cmph_uint8 *)malloc((size_t)(nedges >> 3) + 1);
memset(marked_edge, 0, (size_t)(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_ph_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 (int)queue_head - (int)nedges;/* returns 0 if successful otherwies return negative number*/
};
static int bdz_ph_mapping(cmph_config_t *mph, bdz_ph_graph3_t* graph3, bdz_ph_queue_t queue);
static void assigning(bdz_ph_config_data_t *bdz_ph, bdz_ph_graph3_t* graph3, bdz_ph_queue_t queue);
static void bdz_ph_optimization(bdz_ph_config_data_t *bdz_ph);
bdz_ph_config_data_t *bdz_ph_config_new(void)
{
bdz_ph_config_data_t *bdz_ph;
bdz_ph = (bdz_ph_config_data_t *)malloc(sizeof(bdz_ph_config_data_t));
assert(bdz_ph);
memset(bdz_ph, 0, sizeof(bdz_ph_config_data_t));
bdz_ph->hashfunc = CMPH_HASH_JENKINS;
bdz_ph->g = NULL;
bdz_ph->hl = NULL;
return bdz_ph;
}
void bdz_ph_config_destroy(cmph_config_t *mph)
{
bdz_ph_config_data_t *data = (bdz_ph_config_data_t *)mph->data;
DEBUGP("Destroying algorithm dependent data\n");
free(data);
}
void bdz_ph_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs)
{
bdz_ph_config_data_t *bdz_ph = (bdz_ph_config_data_t *)mph->data;
CMPH_HASH *hashptr = hashfuncs;
cmph_uint32 i = 0;
while(*hashptr != CMPH_HASH_COUNT)
{
if (i >= 1) break; //bdz_ph only uses one linear hash function
bdz_ph->hashfunc = *hashptr;
++i, ++hashptr;
}
}
cmph_t *bdz_ph_new(cmph_config_t *mph, double c)
{
cmph_t *mphf = NULL;
bdz_ph_data_t *bdz_phf = NULL;
cmph_uint32 iterations;
bdz_ph_queue_t edges;
bdz_ph_graph3_t graph3;
bdz_ph_config_data_t *bdz_ph = (bdz_ph_config_data_t *)mph->data;
#ifdef CMPH_TIMING
double construction_time_begin = 0.0;
double construction_time = 0.0;
ELAPSED_TIME_IN_SECONDS(&construction_time_begin);
#endif
if (c == 0) c = 1.23; // validating restrictions over parameter c.
DEBUGP("c: %f\n", c);
bdz_ph->m = mph->key_source->nkeys;
bdz_ph->r = (cmph_uint32)ceil((c * mph->key_source->nkeys)/3);
if ((bdz_ph->r % 2) == 0) bdz_ph->r += 1;
if (bdz_ph->r == 1) { // workaround for small key sets
bdz_ph->r = 3;
}
bdz_ph->n = 3*bdz_ph->r;
bdz_ph_alloc_graph3(&graph3, bdz_ph->m, bdz_ph->n);
bdz_ph_alloc_queue(&edges,bdz_ph->m);
DEBUGP("Created hypergraph\n");
DEBUGP("m (edges): %u n (vertices): %u r: %u c: %f \n", bdz_ph->m, bdz_ph->n, bdz_ph->r, c);
// Mapping step
iterations = 100;
if (mph->verbosity)
{
fprintf(stderr, "Entering mapping step for mph creation of %u keys with graph sized %u\n", bdz_ph->m, bdz_ph->n);
}
while(1)
{
int ok;
DEBUGP("linear hash function \n");
bdz_ph->hl = hash_state_new(bdz_ph->hashfunc, 15);
ok = bdz_ph_mapping(mph, &graph3, edges);
if (!ok)
{
--iterations;
hash_state_destroy(bdz_ph->hl);
bdz_ph->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)
{
// free(bdz_ph->g);
bdz_ph_free_queue(&edges);
bdz_ph_free_graph3(&graph3);
return NULL;
}
bdz_ph_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_ph->m, bdz_ph->n);
}
assigning(bdz_ph, &graph3, edges);
bdz_ph_free_queue(&edges);
bdz_ph_free_graph3(&graph3);
if (mph->verbosity)
{
fprintf(stderr, "Starting optimization step\n");
}
bdz_ph_optimization(bdz_ph);
#ifdef CMPH_TIMING
ELAPSED_TIME_IN_SECONDS(&construction_time);
#endif
mphf = (cmph_t *)malloc(sizeof(cmph_t));
mphf->algo = mph->algo;
bdz_phf = (bdz_ph_data_t *)malloc(sizeof(bdz_ph_data_t));
bdz_phf->g = bdz_ph->g;
bdz_ph->g = NULL; //transfer memory ownership
bdz_phf->hl = bdz_ph->hl;
bdz_ph->hl = NULL; //transfer memory ownership
bdz_phf->n = bdz_ph->n;
bdz_phf->m = bdz_ph->m;
bdz_phf->r = bdz_ph->r;
mphf->data = bdz_phf;
mphf->size = bdz_ph->n;
DEBUGP("Successfully generated minimal perfect hash\n");
if (mph->verbosity)
{
fprintf(stderr, "Successfully generated minimal perfect hash function\n");
}
#ifdef CMPH_TIMING
register cmph_uint32 space_usage = bdz_ph_packed_size(mphf)*8;
register cmph_uint32 keys_per_bucket = 1;
construction_time = construction_time - construction_time_begin;
fprintf(stdout, "%u\t%.2f\t%u\t%.4f\t%.4f\n", bdz_ph->m, bdz_ph->m/(double)bdz_ph->n, keys_per_bucket, construction_time, space_usage/(double)bdz_ph->m);
#endif
return mphf;
}
static int bdz_ph_mapping(cmph_config_t *mph, bdz_ph_graph3_t* graph3, bdz_ph_queue_t queue)
{
cmph_uint32 e;
int cycles = 0;
cmph_uint32 hl[3];
bdz_ph_config_data_t *bdz_ph = (bdz_ph_config_data_t *)mph->data;
bdz_ph_init_graph3(graph3, bdz_ph->m, bdz_ph->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_ph->hl, key, keylen, hl);
h0 = hl[0] % bdz_ph->r;
h1 = hl[1] % bdz_ph->r + bdz_ph->r;
h2 = hl[2] % bdz_ph->r + (bdz_ph->r << 1);
mph->key_source->dispose(mph->key_source->data, key, keylen);
bdz_ph_add_edge(graph3,h0,h1,h2);
}
cycles = bdz_ph_generate_queue(bdz_ph->m, bdz_ph->n, queue, graph3);
return (cycles == 0);
}
static void assigning(bdz_ph_config_data_t *bdz_ph, bdz_ph_graph3_t* graph3, bdz_ph_queue_t queue)
{
cmph_uint32 i;
cmph_uint32 nedges=graph3->nedges;
cmph_uint32 curr_edge;
cmph_uint32 v0,v1,v2;
cmph_uint8 * marked_vertices = (cmph_uint8 *)malloc((size_t)(bdz_ph->n >> 3) + 1);
cmph_uint32 sizeg = (cmph_uint32)ceil(bdz_ph->n/4.0);
bdz_ph->g = (cmph_uint8 *)calloc((size_t)sizeg, sizeof(cmph_uint8));
memset(marked_vertices, 0, (size_t)(bdz_ph->n >> 3) + 1);
//memset(bdz_ph->g, 0xff, sizeg);
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_ph->g, v0), GETVALUE(bdz_ph->g, v1), GETVALUE(bdz_ph->g, v2));
if(!GETBIT(marked_vertices, v0)){
if(!GETBIT(marked_vertices,v1))
{
//SETVALUE(bdz_ph->g, v1, UNASSIGNED);
SETBIT(marked_vertices, v1);
}
if(!GETBIT(marked_vertices,v2))
{
//SETVALUE(bdz_ph->g, v2, UNASSIGNED);
SETBIT(marked_vertices, v2);
}
SETVALUE0(bdz_ph->g, v0, (6-(GETVALUE(bdz_ph->g, v1) + GETVALUE(bdz_ph->g,v2)))%3);
SETBIT(marked_vertices, v0);
} else if(!GETBIT(marked_vertices, v1)) {
if(!GETBIT(marked_vertices, v2))
{
//SETVALUE(bdz_ph->g, v2, UNASSIGNED);
SETBIT(marked_vertices, v2);
}
SETVALUE0(bdz_ph->g, v1, (7 - (GETVALUE(bdz_ph->g, v0)+GETVALUE(bdz_ph->g, v2)))%3);
SETBIT(marked_vertices, v1);
}else {
SETVALUE0(bdz_ph->g, v2, (8-(GETVALUE(bdz_ph->g,v0)+GETVALUE(bdz_ph->g, v1)))%3);
SETBIT(marked_vertices, v2);
}
DEBUGP("A:%u %u %u -- %u %u %u\n", v0, v1, v2, GETVALUE(bdz_ph->g, v0), GETVALUE(bdz_ph->g, v1), GETVALUE(bdz_ph->g, v2));
};
free(marked_vertices);
}
static void bdz_ph_optimization(bdz_ph_config_data_t *bdz_ph)
{
cmph_uint32 i;
cmph_uint8 byte = 0;
cmph_uint32 sizeg = (cmph_uint32)ceil(bdz_ph->n/5.0);
cmph_uint8 * new_g = (cmph_uint8 *)calloc((size_t)sizeg, sizeof(cmph_uint8));
cmph_uint8 value;
cmph_uint32 idx;
for(i = 0; i < bdz_ph->n; i++)
{
idx = i/5;
byte = new_g[idx];
value = GETVALUE(bdz_ph->g, i);
byte = (cmph_uint8) (byte + value*pow3_table[i%5U]);
new_g[idx] = byte;
}
free(bdz_ph->g);
bdz_ph->g = new_g;
}
int bdz_ph_dump(cmph_t *mphf, FILE *fd)
{
char *buf = NULL;
cmph_uint32 buflen;
cmph_uint32 sizeg = 0;
register size_t nbytes;
bdz_ph_data_t *data = (bdz_ph_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);
nbytes = fwrite(&buflen, sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(buf, (size_t)buflen, (size_t)1, fd);
free(buf);
nbytes = fwrite(&(data->n), sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(&(data->m), sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(&(data->r), sizeof(cmph_uint32), (size_t)1, fd);
sizeg = (cmph_uint32)ceil(data->n/5.0);
nbytes = fwrite(data->g, sizeof(cmph_uint8)*sizeg, (size_t)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_ph_load(FILE *f, cmph_t *mphf)
{
char *buf = NULL;
cmph_uint32 buflen;
cmph_uint32 sizeg = 0;
register size_t nbytes;
bdz_ph_data_t *bdz_ph = (bdz_ph_data_t *)malloc(sizeof(bdz_ph_data_t));
DEBUGP("Loading bdz_ph mphf\n");
mphf->data = bdz_ph;
nbytes = fread(&buflen, sizeof(cmph_uint32), (size_t)1, f);
DEBUGP("Hash state has %u bytes\n", buflen);
buf = (char *)malloc((size_t)buflen);
nbytes = fread(buf, (size_t)buflen, (size_t)1, f);
bdz_ph->hl = hash_state_load(buf, buflen);
free(buf);
DEBUGP("Reading m and n\n");
nbytes = fread(&(bdz_ph->n), sizeof(cmph_uint32), (size_t)1, f);
nbytes = fread(&(bdz_ph->m), sizeof(cmph_uint32), (size_t)1, f);
nbytes = fread(&(bdz_ph->r), sizeof(cmph_uint32), (size_t)1, f);
sizeg = (cmph_uint32)ceil(bdz_ph->n/5.0);
bdz_ph->g = (cmph_uint8 *)calloc((size_t)sizeg, sizeof(cmph_uint8));
nbytes = fread(bdz_ph->g, sizeg*sizeof(cmph_uint8), (size_t)1, f);
return;
}
cmph_uint32 bdz_ph_search(cmph_t *mphf, const char *key, cmph_uint32 keylen)
{
register bdz_ph_data_t *bdz_ph = (bdz_ph_data_t *)mphf->data;
cmph_uint32 hl[3];
register cmph_uint8 byte0, byte1, byte2;
register cmph_uint32 vertex;
hash_vector(bdz_ph->hl, key, keylen,hl);
hl[0] = hl[0] % bdz_ph->r;
hl[1] = hl[1] % bdz_ph->r + bdz_ph->r;
hl[2] = hl[2] % bdz_ph->r + (bdz_ph->r << 1);
byte0 = bdz_ph->g[hl[0]/5];
byte1 = bdz_ph->g[hl[1]/5];
byte2 = bdz_ph->g[hl[2]/5];
byte0 = lookup_table[hl[0]%5U][byte0];
byte1 = lookup_table[hl[1]%5U][byte1];
byte2 = lookup_table[hl[2]%5U][byte2];
vertex = hl[(byte0 + byte1 + byte2)%3];
return vertex;
}
void bdz_ph_destroy(cmph_t *mphf)
{
bdz_ph_data_t *data = (bdz_ph_data_t *)mphf->data;
free(data->g);
hash_state_destroy(data->hl);
free(data);
free(mphf);
}
/** \fn void bdz_ph_pack(cmph_t *mphf, void *packed_mphf);
* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
* \param mphf pointer to the resulting mphf
* \param packed_mphf pointer to the contiguous memory area used to store the resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
*/
void bdz_ph_pack(cmph_t *mphf, void *packed_mphf)
{
bdz_ph_data_t *data = (bdz_ph_data_t *)mphf->data;
cmph_uint8 * ptr = (cmph_uint8 *)packed_mphf;
// packing hl type
CMPH_HASH hl_type = hash_get_type(data->hl);
*((cmph_uint32 *) ptr) = hl_type;
ptr += sizeof(cmph_uint32);
// packing hl
hash_state_pack(data->hl, ptr);
ptr += hash_state_packed_size(hl_type);
// packing r
*((cmph_uint32 *) ptr) = data->r;
ptr += sizeof(data->r);
// packing g
cmph_uint32 sizeg = (cmph_uint32)ceil(data->n/5.0);
memcpy(ptr, data->g, sizeof(cmph_uint8)*sizeg);
}
/** \fn cmph_uint32 bdz_ph_packed_size(cmph_t *mphf);
* \brief Return the amount of space needed to pack mphf.
* \param mphf pointer to a mphf
* \return the size of the packed function or zero for failures
*/
cmph_uint32 bdz_ph_packed_size(cmph_t *mphf)
{
bdz_ph_data_t *data = (bdz_ph_data_t *)mphf->data;
CMPH_HASH hl_type = hash_get_type(data->hl);
cmph_uint32 sizeg = (cmph_uint32)ceil(data->n/5.0);
return (cmph_uint32) (sizeof(CMPH_ALGO) + hash_state_packed_size(hl_type) + 2*sizeof(cmph_uint32) + sizeof(cmph_uint8)*sizeg);
}
/** cmph_uint32 bdz_ph_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
* \brief Use the packed mphf to do a search.
* \param packed_mphf pointer to the packed mphf
* \param key key to be hashed
* \param keylen key legth in bytes
* \return The mphf value
*/
cmph_uint32 bdz_ph_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen)
{
register CMPH_HASH hl_type = (CMPH_HASH)*(cmph_uint32 *)packed_mphf;
register cmph_uint8 *hl_ptr = (cmph_uint8 *)(packed_mphf) + 4;
register cmph_uint8 * ptr = hl_ptr + hash_state_packed_size(hl_type);
register cmph_uint32 r = *((cmph_uint32*) ptr);
register cmph_uint8 * g = ptr + 4;
cmph_uint32 hl[3];
register cmph_uint8 byte0, byte1, byte2;
register cmph_uint32 vertex;
hash_vector_packed(hl_ptr, hl_type, key, keylen, hl);
hl[0] = hl[0] % r;
hl[1] = hl[1] % r + r;
hl[2] = hl[2] % r + (r << 1);
byte0 = g[hl[0]/5];
byte1 = g[hl[1]/5];
byte2 = g[hl[2]/5];
byte0 = lookup_table[hl[0]%5][byte0];
byte1 = lookup_table[hl[1]%5][byte1];
byte2 = lookup_table[hl[2]%5][byte2];
vertex = hl[(byte0 + byte1 + byte2)%3];
return vertex;
}
View Git Blame Copy Permalink