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YapTab: support for early completion 

git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@2239 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
This commit is contained in:
ricroc 2008-05-20 18:25:37 +00:00
parent 511181b472
commit 9a841991ea
2 changed files with 19 additions and 8 deletions
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21
OPTYap/tab.insts.i
View File

@ -5,7 +5,7 @@
Copyright: R. Rocha and NCC - University of Porto, Portugal Copyright: R. Rocha and NCC - University of Porto, Portugal
File: tab.insts.i File: tab.insts.i
version: $Id: tab.insts.i,v 1.24 2007-04-26 14:11:08 ricroc Exp $ version: $Id: tab.insts.i,v 1.25 2008-05-20 18:25:37 ricroc Exp $
**********************************************************************/ **********************************************************************/
@ -36,8 +36,7 @@
#define store_generator_node(TAB_ENT, SG_FR, ARITY, AP) \ #define store_generator_node(TAB_ENT, SG_FR, ARITY, AP) \
{ register int subs_arity = *YENV; \ { register CELL *pt_args; \
register CELL *pt_args; \
register choiceptr gcp; \ register choiceptr gcp; \
/* store args */ \ /* store args */ \
pt_args = XREGS + (ARITY); \ pt_args = XREGS + (ARITY); \
@ -54,13 +53,13 @@
/* store generator choice point */ \ /* store generator choice point */ \
HBREG = H; \ HBREG = H; \
store_yaam_reg_cpdepth(gcp); \ store_yaam_reg_cpdepth(gcp); \
gcp->cp_tr = TR; \ gcp->cp_tr = TR; \
gcp->cp_ap = (yamop *)(AP); \ gcp->cp_ap = (yamop *)(AP); \
gcp->cp_h = H; \ gcp->cp_h = H; \
gcp->cp_b = B; \ gcp->cp_b = B; \
gcp->cp_env = ENV; \ gcp->cp_env = ENV; \
gcp->cp_cp = CPREG; \ gcp->cp_cp = CPREG; \
if (subs_arity && IsMode_Local(TabEnt_mode(TAB_ENT))) { \ if (IsMode_Local(TabEnt_mode(TAB_ENT))) { \
/* go local */ \ /* go local */ \
register dep_fr_ptr new_dep_fr; \ register dep_fr_ptr new_dep_fr; \
/* adjust freeze registers */ \ /* adjust freeze registers */ \
@ -935,6 +934,12 @@
#endif /* TABLING_ERRORS */ #endif /* TABLING_ERRORS */
UNLOCK(SgFr_lock(sg_fr)); UNLOCK(SgFr_lock(sg_fr));
if (IS_BATCHED_GEN_CP(gcp)) { if (IS_BATCHED_GEN_CP(gcp)) {
/* if the number of substitution variables is zero,
an answer is sufficient to perform an early completion */
if (*subs_ptr == 0 && gcp->cp_ap != NULL) {
gcp->cp_ap = COMPLETION;
mark_as_completed(sg_fr);
}
/* deallocate and procceed */ /* deallocate and procceed */
PREG = (yamop *) YENV[E_CP]; PREG = (yamop *) YENV[E_CP];
PREFETCH_OP(PREG); PREFETCH_OP(PREG);
@ -946,6 +951,12 @@
#endif /* DEPTH_LIMIT */ #endif /* DEPTH_LIMIT */
GONext(); GONext();
} else { } else {
/* if the number of substitution variables is zero,
an answer is sufficient to perform an early completion */
if (*subs_ptr == 0 && gcp->cp_ap != ANSWER_RESOLUTION) {
gcp->cp_ap = COMPLETION;
mark_as_completed(sg_fr);
}
/* fail */ /* fail */
goto fail; goto fail;
} }

6
OPTYap/tab.tries.c
View File

@ -5,7 +5,7 @@
Copyright: R. Rocha and NCC - University of Porto, Portugal Copyright: R. Rocha and NCC - University of Porto, Portugal
File: tab.tries.C File: tab.tries.C
version: $Id: tab.tries.c,v 1.23 2008-05-05 17:09:37 ricroc Exp $ version: $Id: tab.tries.c,v 1.24 2008-05-20 18:25:37 ricroc Exp $
**********************************************************************/ **********************************************************************/
@ -883,12 +883,12 @@ void load_answer_trie(ans_node_ptr ans_node, CELL *subs_ptr) {
int var_index = VarIndexOfTableTerm(t); int var_index = VarIndexOfTableTerm(t);
if(var_index > n_vars) { if(var_index > n_vars) {
for (i = var_index; i > n_vars; i--) for (i = var_index; i > n_vars; i--)
stack_vars_base[i] = NULL; stack_vars_base[i] = 0;
n_vars = var_index; n_vars = var_index;
stack_vars = stack_terms_base + n_vars; stack_vars = stack_terms_base + n_vars;
STACK_CHECK_EXPAND(stack_terms, stack_vars, stack_terms_base); STACK_CHECK_EXPAND(stack_terms, stack_vars, stack_terms_base);
} }
if (stack_vars_base[var_index] == NULL) if (stack_vars_base[var_index] == 0)
stack_vars_base[var_index] = MkVarTerm(); stack_vars_base[var_index] = MkVarTerm();
STACK_PUSH_UP(stack_vars_base[var_index], stack_terms); STACK_PUSH_UP(stack_vars_base[var_index], stack_terms);
STACK_CHECK_EXPAND(stack_terms, stack_vars, stack_terms_base); STACK_CHECK_EXPAND(stack_terms, stack_vars, stack_terms_base);