452 lines
8.4 KiB
C
452 lines
8.4 KiB
C
/*******************************************************************************************
|
|
|
|
Copyright (C) 2004,2005,2006,2007,2008 (Nuno A. Fonseca) <nuno.fonseca@gmail.com>
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later
|
|
version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
|
|
Last rev: $Id: yap_rl.c,v 1.1 2008-03-26 23:05:22 nunofonseca Exp $
|
|
**************************************************************************/
|
|
|
|
#include <time.h>
|
|
#include <stdio.h>
|
|
|
|
#include "range_list.h"
|
|
#include <YapInterface.h>
|
|
|
|
#define IDTYPE long
|
|
#define PTR2ID(ptr) (IDTYPE)ptr
|
|
#define ID2PTR(id) (RL_Tree*)id
|
|
|
|
|
|
/* ############################################################ */
|
|
unsigned long int memory_usage=0;
|
|
unsigned long int tree_mem=0;
|
|
|
|
#define STORE_TREE_SIZE(tree) tree_mem=tree->mem_alloc
|
|
#define UPDATE_MEM_USAGE(tree) memory_usage+=(tree->mem_alloc>0?tree->mem_alloc-tree_mem:0)
|
|
#define FREE_MEM_USAGE(tree) (memory_usage-=tree->mem_alloc)
|
|
#define ADD_MEM_USAGE(tree) (memory_usage+=tree->mem_alloc)
|
|
|
|
/*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_new(void) {
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
YAP_Term t2=YAP_Deref(YAP_ARG2);
|
|
RL_Tree* new_tree;
|
|
IDTYPE newid;
|
|
|
|
// Check args
|
|
if (!YAP_IsIntTerm(t1) || !YAP_IsVarTerm(t2)) {
|
|
fprintf(stderr,"Error in rl_new arguments\n");
|
|
return(FALSE);
|
|
}
|
|
//
|
|
new_tree=new_rl(YAP_IntOfTerm(t1));
|
|
if(new_tree==NULL) {
|
|
fprintf(stderr,"Error creating new rl.");
|
|
return (FALSE);
|
|
}
|
|
//printf("New rl %d %p--%u\n",PTR2ID(new_tree),new_tree,(int)new_tree,YAP_IntOfTerm(t1));
|
|
// return reference
|
|
newid=YAP_MkIntTerm(PTR2ID(new_tree));
|
|
if(!YAP_Unify(YAP_Deref(YAP_ARG2),newid))
|
|
return (FALSE);
|
|
|
|
return(TRUE);
|
|
}
|
|
/*
|
|
*
|
|
*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_copy(void) {
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1); // src
|
|
YAP_Term t2=YAP_Deref(YAP_ARG2); // dest
|
|
RL_Tree* new_tree;
|
|
IDTYPE id1,newid;
|
|
RL_Tree* tree;
|
|
|
|
// Check args
|
|
if (!YAP_IsIntTerm(t1))
|
|
return(FALSE);
|
|
if (!YAP_IsVarTerm(t2))
|
|
return(FALSE);
|
|
//
|
|
id1=YAP_IntOfTerm(t1);
|
|
tree=ID2PTR(id1);
|
|
new_tree=copy_rl(tree);
|
|
|
|
if(new_tree==NULL) {
|
|
fprintf(stderr,"Error creating new rl.");
|
|
return (FALSE);
|
|
}
|
|
//
|
|
#ifdef STATS
|
|
ADD_MEM_USAGE(new_tree);
|
|
#endif
|
|
|
|
// return list reference
|
|
newid=YAP_MkIntTerm(PTR2ID(new_tree));
|
|
if(!YAP_Unify(YAP_Deref(YAP_ARG2),newid))
|
|
return (FALSE);
|
|
return(TRUE);
|
|
}
|
|
/*
|
|
*
|
|
*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_size(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1),t_size;
|
|
IDTYPE id;
|
|
RL_Tree* tree;
|
|
unsigned int size;
|
|
|
|
if (YAP_IsVarTerm(t1))
|
|
return(FALSE);
|
|
|
|
id = YAP_IntOfTerm(t1);
|
|
tree=ID2PTR(id);
|
|
|
|
size=tree->size*sizeof(RL_Node)+sizeof(RL_Tree);
|
|
t_size=YAP_MkIntTerm(size);
|
|
if(!YAP_Unify(YAP_ARG2,t_size) )
|
|
return (FALSE);
|
|
|
|
return(TRUE);
|
|
}
|
|
/*
|
|
*
|
|
*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_mem_usage(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
|
|
if(!YAP_Unify(t1,YAP_MkIntTerm(memory_usage)) )
|
|
return (FALSE);
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_free(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
IDTYPE id;
|
|
RL_Tree* tree;
|
|
|
|
// Check args
|
|
if (YAP_IsVarTerm(t1))
|
|
return(FALSE);
|
|
|
|
id=YAP_IntOfTerm(t1);
|
|
tree=ID2PTR(id);
|
|
#ifdef STATS
|
|
FREE_MEM_USAGE(tree);
|
|
#endif
|
|
|
|
free_rl(tree);
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
/*
|
|
*
|
|
*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_set_in(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
YAP_Term t2=YAP_Deref(YAP_ARG2);
|
|
IDTYPE id;
|
|
NUM val;
|
|
RL_Tree *tree;
|
|
|
|
// Check args
|
|
if (YAP_IsVarTerm(t1) || YAP_IsVarTerm(t2) )
|
|
return(FALSE);
|
|
|
|
id = YAP_IntOfTerm(t1);
|
|
val = YAP_IntOfTerm(t2);
|
|
|
|
tree=ID2PTR(id);
|
|
|
|
#ifdef STATS
|
|
STORE_TREE_SIZE(tree);
|
|
set_in_rl(tree,val,IN);
|
|
UPDATE_MEM_USAGE(tree);
|
|
#else
|
|
set_in_rl(tree,val,IN);
|
|
#endif
|
|
return (TRUE);
|
|
}
|
|
|
|
#ifdef UNUSED
|
|
/*
|
|
*
|
|
*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_in(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
YAP_Term t2=YAP_Deref(YAP_ARG2);
|
|
IDTYPE id;
|
|
NUM val;
|
|
RL_Tree *tree;
|
|
|
|
// Check args
|
|
if (YAP_IsVarTerm(t1) || YAP_IsVarTerm(t2) )
|
|
return(FALSE);
|
|
|
|
id = YAP_IntOfTerm(t1);
|
|
val = YAP_IntOfTerm(t2);
|
|
|
|
tree=ID2PTR(id);
|
|
|
|
if ( in_rl(tree,val) )
|
|
return (TRUE);
|
|
return (FALSE);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
*
|
|
*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_set_out(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
YAP_Term t2=YAP_Deref(YAP_ARG2);
|
|
IDTYPE id;
|
|
NUM val;
|
|
RL_Tree *tree;
|
|
|
|
// Check args
|
|
if (YAP_IsVarTerm(t1) || YAP_IsVarTerm(t2) )
|
|
return(FALSE);
|
|
|
|
id = YAP_IntOfTerm(t1);
|
|
val = YAP_IntOfTerm(t2);
|
|
|
|
tree=ID2PTR(id);
|
|
#ifdef STATS
|
|
STORE_TREE_SIZE(tree);
|
|
set_in_rl(tree,val,OUT);
|
|
UPDATE_MEM_USAGE(tree);
|
|
#else
|
|
set_in_rl(tree,val,OUT);
|
|
#endif
|
|
return (TRUE);
|
|
}
|
|
/*
|
|
*
|
|
*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_freeze(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
IDTYPE id;
|
|
RL_Tree *tree;
|
|
|
|
// Check args
|
|
if (YAP_IsVarTerm(t1) )
|
|
return(FALSE);
|
|
|
|
id = YAP_IntOfTerm(t1);
|
|
tree=ID2PTR(id);
|
|
|
|
|
|
#ifdef STATS
|
|
STORE_TREE_SIZE(tree);
|
|
freeze_rl(tree);
|
|
UPDATE_MEM_USAGE(tree);
|
|
#else
|
|
freeze_rl(tree);
|
|
#endif
|
|
|
|
return (TRUE);
|
|
}
|
|
/*
|
|
*
|
|
*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_set_all_in(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
IDTYPE id;
|
|
RL_Tree *tree;
|
|
|
|
// Check args
|
|
if (YAP_IsVarTerm(t1) )
|
|
return(FALSE);
|
|
|
|
id = YAP_IntOfTerm(t1);
|
|
tree=ID2PTR(id);
|
|
|
|
|
|
#ifdef STATS
|
|
STORE_TREE_SIZE(tree);
|
|
rl_all(tree,IN);
|
|
freeze_rl(tree);
|
|
UPDATE_MEM_USAGE(tree);
|
|
#else
|
|
rl_all(tree,IN);
|
|
freeze_rl(tree);
|
|
#endif
|
|
|
|
return (TRUE);
|
|
}
|
|
/*
|
|
*
|
|
*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_print(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
IDTYPE id;
|
|
RL_Tree *tree;
|
|
|
|
// Check args
|
|
if (YAP_IsVarTerm(t1) ) {
|
|
fprintf(stderr,"Error printing tree..");
|
|
return(FALSE);
|
|
}
|
|
id = YAP_IntOfTerm(t1);
|
|
tree=ID2PTR(id);
|
|
|
|
display_tree(tree);
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
|
|
/* ==============================================================================
|
|
*
|
|
*
|
|
*/
|
|
typedef struct {
|
|
YAP_Term last_solution; /* the last solution */
|
|
} yap_back_data_type;
|
|
|
|
yap_back_data_type *back_data;
|
|
|
|
/*
|
|
*
|
|
*
|
|
*/
|
|
static
|
|
int
|
|
p_rl_b_in2(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
IDTYPE id;
|
|
NUM val;
|
|
RL_Tree *tree;
|
|
|
|
YAP_PRESERVED_DATA(back_data,yap_back_data_type);
|
|
id = YAP_IntOfTerm(t1);
|
|
tree=ID2PTR(id);
|
|
val=YAP_IntOfTerm(back_data->last_solution);
|
|
val=rl_next_in_bigger(tree,val);
|
|
if ( val > 0 && YAP_Unify(YAP_Deref(YAP_ARG2),YAP_MkIntTerm(val))) {
|
|
back_data->last_solution=YAP_MkIntTerm(val);
|
|
return TRUE;
|
|
}
|
|
YAP_cut_fail();
|
|
return (FALSE);
|
|
}
|
|
static
|
|
int
|
|
p_rl_b_in1(void) {
|
|
|
|
YAP_Term t1=YAP_Deref(YAP_ARG1);
|
|
YAP_Term t2=YAP_Deref(YAP_ARG2);
|
|
IDTYPE id;
|
|
NUM val;
|
|
RL_Tree *tree;
|
|
|
|
// Check args
|
|
if (!YAP_IsIntTerm(t1)) {
|
|
YAP_cut_fail();
|
|
return(FALSE);
|
|
}
|
|
if ( YAP_IsVarTerm(t2) ) {
|
|
// return all in through backtracking
|
|
YAP_PRESERVE_DATA(back_data,yap_back_data_type);
|
|
back_data->last_solution = YAP_MkIntTerm(0);
|
|
return p_rl_b_in2();
|
|
} else {
|
|
id = YAP_IntOfTerm(t1);
|
|
tree=ID2PTR(id);
|
|
val = YAP_IntOfTerm(t2);
|
|
if ( in_rl(tree,val) ) {
|
|
YAP_cut_succeed();
|
|
return (TRUE);
|
|
}
|
|
YAP_cut_fail();
|
|
return (FALSE);
|
|
}
|
|
}
|
|
/* ******************************************************* */
|
|
void init_rl(void);
|
|
|
|
void init_rl(void){
|
|
|
|
|
|
YAP_UserCPredicate("rl_new", p_rl_new,2); // Maximum -> RangeID
|
|
YAP_UserCPredicate("rl_free", p_rl_free,1); // RangeId ->
|
|
YAP_UserCPredicate("rl_size", p_rl_size,2); // RangeId -> Size (in bytes)
|
|
YAP_UserCPredicate("rl_mem", p_rl_mem_usage,1); // -> TotalMemory (in bytes)
|
|
|
|
YAP_UserCPredicate("rl_copy", p_rl_copy,2); // RangeId -> NewRangeId
|
|
YAP_UserCPredicate("rl_set_out", p_rl_set_out,2);// RangeId x Number ->
|
|
YAP_UserBackCPredicate("rl_in", p_rl_b_in1,p_rl_b_in2,2,sizeof(yap_back_data_type)); // +RangeId x ?Number
|
|
//YAP_UserCPredicate("rl_in", p_rl_in,2); // RangeId x Number ->
|
|
YAP_UserCPredicate("rl_set_in", p_rl_set_in,2); // RangeIdxNumber ->
|
|
YAP_UserCPredicate("rl_set_all_in", p_rl_set_all_in,1); // RangeId ->
|
|
|
|
YAP_UserCPredicate("rl_print", p_rl_print,1); // RangeId ->
|
|
|
|
YAP_UserCPredicate("rl_freeze", p_rl_freeze,1); // RangeId
|
|
|
|
// fprintf(stderr,"Range list module succesfully loaded.");
|
|
//fflush(stderr);
|
|
}
|