605 lines
21 KiB
C
Executable File
605 lines
21 KiB
C
Executable File
#include "bdz_ph.h"
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#include "cmph_structs.h"
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#include "bdz_structs_ph.h"
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#include "hash.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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#define UNASSIGNED 3
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#define NULL_EDGE 0xffffffff
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static int pow3_table[5] = {1,3,9,27,81};
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static int lookup_table[5][256] = {
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{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},
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{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},
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{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},
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{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},
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{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},
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};
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typedef struct
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{
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cmph_uint32 vertices[3];
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cmph_uint32 next_edges[3];
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}bdz_ph_edge_t;
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typedef cmph_uint32 * bdz_ph_queue_t;
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static void bdz_ph_alloc_queue(bdz_ph_queue_t * queuep, cmph_uint32 nedges)
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{
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(*queuep)=malloc(nedges*sizeof(cmph_uint32));
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};
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static void bdz_ph_free_queue(bdz_ph_queue_t * queue)
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{
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free(*queue);
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};
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typedef struct
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{
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cmph_uint32 nedges;
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bdz_ph_edge_t * edges;
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cmph_uint32 * first_edge;
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cmph_uint8 * vert_degree;
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}bdz_ph_graph3_t;
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static void bdz_ph_alloc_graph3(bdz_ph_graph3_t * graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
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{
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graph3->edges=malloc(nedges*sizeof(bdz_ph_edge_t));
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graph3->first_edge=malloc(nvertices*sizeof(cmph_uint32));
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graph3->vert_degree=malloc((size_t)nvertices);
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};
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static void bdz_ph_init_graph3(bdz_ph_graph3_t * graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
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{
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memset(graph3->first_edge,0xff,nvertices*sizeof(cmph_uint32));
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memset(graph3->vert_degree,0,(size_t)nvertices);
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graph3->nedges=0;
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};
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static void bdz_ph_free_graph3(bdz_ph_graph3_t *graph3)
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{
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free(graph3->edges);
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free(graph3->first_edge);
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free(graph3->vert_degree);
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};
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static void bdz_ph_partial_free_graph3(bdz_ph_graph3_t *graph3)
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{
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free(graph3->first_edge);
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free(graph3->vert_degree);
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graph3->first_edge = NULL;
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graph3->vert_degree = NULL;
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};
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static void bdz_ph_add_edge(bdz_ph_graph3_t * graph3, cmph_uint32 v0, cmph_uint32 v1, cmph_uint32 v2)
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{
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graph3->edges[graph3->nedges].vertices[0]=v0;
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graph3->edges[graph3->nedges].vertices[1]=v1;
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graph3->edges[graph3->nedges].vertices[2]=v2;
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graph3->edges[graph3->nedges].next_edges[0]=graph3->first_edge[v0];
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graph3->edges[graph3->nedges].next_edges[1]=graph3->first_edge[v1];
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graph3->edges[graph3->nedges].next_edges[2]=graph3->first_edge[v2];
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graph3->first_edge[v0]=graph3->first_edge[v1]=graph3->first_edge[v2]=graph3->nedges;
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graph3->vert_degree[v0]++;
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graph3->vert_degree[v1]++;
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graph3->vert_degree[v2]++;
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graph3->nedges++;
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};
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static void bdz_ph_dump_graph(bdz_ph_graph3_t* graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
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{
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int i;
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for(i=0;i<nedges;i++){
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printf("\nedge %d %d %d %d ",i,graph3->edges[i].vertices[0],
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graph3->edges[i].vertices[1],graph3->edges[i].vertices[2]);
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printf(" nexts %d %d %d",graph3->edges[i].next_edges[0],
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graph3->edges[i].next_edges[1],graph3->edges[i].next_edges[2]);
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};
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for(i=0;i<nvertices;i++){
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printf("\nfirst for vertice %d %d ",i,graph3->first_edge[i]);
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};
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};
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static void bdz_ph_remove_edge(bdz_ph_graph3_t * graph3, cmph_uint32 curr_edge)
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{
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cmph_uint32 i,j=0,vert,edge1,edge2;
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for(i=0;i<3;i++){
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vert=graph3->edges[curr_edge].vertices[i];
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edge1=graph3->first_edge[vert];
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edge2=NULL_EDGE;
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while(edge1!=curr_edge&&edge1!=NULL_EDGE){
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edge2=edge1;
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if(graph3->edges[edge1].vertices[0]==vert){
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j=0;
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} else if(graph3->edges[edge1].vertices[1]==vert){
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j=1;
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} else
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j=2;
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edge1=graph3->edges[edge1].next_edges[j];
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};
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if(edge1==NULL_EDGE){
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printf("\nerror remove edge %d dump graph",curr_edge);
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bdz_ph_dump_graph(graph3,graph3->nedges,graph3->nedges+graph3->nedges/4);
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exit(-1);
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};
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if(edge2!=NULL_EDGE){
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graph3->edges[edge2].next_edges[j] =
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graph3->edges[edge1].next_edges[i];
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} else
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graph3->first_edge[vert]=
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graph3->edges[edge1].next_edges[i];
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graph3->vert_degree[vert]--;
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};
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};
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static int bdz_ph_generate_queue(cmph_uint32 nedges, cmph_uint32 nvertices, bdz_ph_queue_t queue, bdz_ph_graph3_t* graph3)
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{
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cmph_uint32 i,v0,v1,v2;
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cmph_uint32 queue_head=0,queue_tail=0;
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cmph_uint32 curr_edge;
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cmph_uint32 tmp_edge;
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cmph_uint8 * marked_edge =malloc((size_t)(nedges >> 3) + 1);
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memset(marked_edge, 0, (size_t)(nedges >> 3) + 1);
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for(i=0;i<nedges;i++){
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v0=graph3->edges[i].vertices[0];
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v1=graph3->edges[i].vertices[1];
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v2=graph3->edges[i].vertices[2];
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if(graph3->vert_degree[v0]==1 ||
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graph3->vert_degree[v1]==1 ||
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graph3->vert_degree[v2]==1){
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if(!GETBIT(marked_edge,i)) {
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queue[queue_head++]=i;
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SETBIT(marked_edge,i);
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}
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};
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};
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while(queue_tail!=queue_head){
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curr_edge=queue[queue_tail++];
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bdz_ph_remove_edge(graph3,curr_edge);
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v0=graph3->edges[curr_edge].vertices[0];
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v1=graph3->edges[curr_edge].vertices[1];
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v2=graph3->edges[curr_edge].vertices[2];
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if(graph3->vert_degree[v0]==1 ) {
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tmp_edge=graph3->first_edge[v0];
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if(!GETBIT(marked_edge,tmp_edge)) {
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queue[queue_head++]=tmp_edge;
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SETBIT(marked_edge,tmp_edge);
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};
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};
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if(graph3->vert_degree[v1]==1) {
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tmp_edge=graph3->first_edge[v1];
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if(!GETBIT(marked_edge,tmp_edge)){
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queue[queue_head++]=tmp_edge;
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SETBIT(marked_edge,tmp_edge);
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};
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};
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if(graph3->vert_degree[v2]==1){
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tmp_edge=graph3->first_edge[v2];
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if(!GETBIT(marked_edge,tmp_edge)){
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queue[queue_head++]=tmp_edge;
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SETBIT(marked_edge,tmp_edge);
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};
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};
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};
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free(marked_edge);
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return queue_head-nedges;/* returns 0 if successful otherwies return negative number*/
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};
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static int bdz_ph_mapping(cmph_config_t *mph, bdz_ph_graph3_t* graph3, bdz_ph_queue_t queue);
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static void assigning(bdz_ph_config_data_t *bdz_ph, bdz_ph_graph3_t* graph3, bdz_ph_queue_t queue);
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static void bdz_ph_optimization(bdz_ph_config_data_t *bdz_ph);
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bdz_ph_config_data_t *bdz_ph_config_new()
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{
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bdz_ph_config_data_t *bdz_ph;
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bdz_ph = (bdz_ph_config_data_t *)malloc(sizeof(bdz_ph_config_data_t));
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assert(bdz_ph);
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memset(bdz_ph, 0, sizeof(bdz_ph_config_data_t));
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bdz_ph->hashfunc = CMPH_HASH_JENKINS;
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bdz_ph->g = NULL;
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bdz_ph->hl = NULL;
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return bdz_ph;
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}
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void bdz_ph_config_destroy(cmph_config_t *mph)
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{
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bdz_ph_config_data_t *data = (bdz_ph_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 bdz_ph_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs)
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{
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bdz_ph_config_data_t *bdz_ph = (bdz_ph_config_data_t *)mph->data;
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CMPH_HASH *hashptr = hashfuncs;
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cmph_uint32 i = 0;
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while(*hashptr != CMPH_HASH_COUNT)
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{
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if (i >= 1) break; //bdz_ph only uses one linear hash function
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bdz_ph->hashfunc = *hashptr;
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++i, ++hashptr;
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}
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}
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cmph_t *bdz_ph_new(cmph_config_t *mph, double c)
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{
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cmph_t *mphf = NULL;
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bdz_ph_data_t *bdz_phf = NULL;
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cmph_uint32 iterations;
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bdz_ph_queue_t edges;
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bdz_ph_graph3_t graph3;
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bdz_ph_config_data_t *bdz_ph = (bdz_ph_config_data_t *)mph->data;
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if (c == 0) c = 1.23; // validating restrictions over parameter c.
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DEBUGP("c: %f\n", c);
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bdz_ph->m = mph->key_source->nkeys;
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bdz_ph->r = ceil((c * mph->key_source->nkeys)/3);
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bdz_ph->n = 3*bdz_ph->r;
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bdz_ph_alloc_graph3(&graph3, bdz_ph->m, bdz_ph->n);
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bdz_ph_alloc_queue(&edges,bdz_ph->m);
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DEBUGP("Created hypergraph\n");
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DEBUGP("m (edges): %u n (vertices): %u r: %u c: %f \n", bdz_ph->m, bdz_ph->n, bdz_ph->r, c);
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// Mapping step
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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", bdz_ph->m, bdz_ph->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("linear hash function \n");
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bdz_ph->hl = hash_state_new(bdz_ph->hashfunc, 15);
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ok = bdz_ph_mapping(mph, &graph3, edges);
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if (!ok)
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{
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--iterations;
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hash_state_destroy(bdz_ph->hl);
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bdz_ph->hl = 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, "acyclic 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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// free(bdz_ph->g);
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bdz_ph_free_queue(&edges);
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bdz_ph_free_graph3(&graph3);
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return NULL;
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}
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bdz_ph_partial_free_graph3(&graph3);
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// Assigning step
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if (mph->verbosity)
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{
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fprintf(stderr, "Entering assigning step for mph creation of %u keys with graph sized %u\n", bdz_ph->m, bdz_ph->n);
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}
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assigning(bdz_ph, &graph3, edges);
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bdz_ph_free_queue(&edges);
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bdz_ph_free_graph3(&graph3);
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if (mph->verbosity)
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{
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fprintf(stderr, "Starting optimization step\n");
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}
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bdz_ph_optimization(bdz_ph);
|
|
|
|
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");
|
|
}
|
|
|
|
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 =malloc((size_t)(bdz_ph->n >> 3) + 1);
|
|
cmph_uint32 sizeg = 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 = 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 += value*pow3_table[i%5];
|
|
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 cmph_uint32 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 = 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 cmph_uint32 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 = 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 = 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]%5][byte0];
|
|
byte1 = lookup_table[hl[1]%5][byte1];
|
|
byte2 = lookup_table[hl[2]%5][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 = 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 = 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 = ceil(data->n/5.0);
|
|
return (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_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;
|
|
}
|