make gc much more aggressive at recovering db space.
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@529 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
This commit is contained in:
vsc
parent
d8f2f035be
commit
60ae7a9ce5
76
C/absmi.c
76
C/absmi.c
@ -985,82 +985,22 @@ absmi(int inp)
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UNLOCK(cl->ClLock);
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}
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#else
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if (PREG->u.EC.ClENV == 0) {
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{
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Clause *cl = (Clause *)PREG->u.EC.ClBase;
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if (!(cl->ClFlags |= InUseMask)) {
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/* Clause *cl = (Clause *)PREG->u.EC.ClBase;
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/* marking a new clause */
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PREG->u.EC.ClTrail = TR-(tr_fr_ptr)TrailBase;
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PREG->u.EC.ClENV = LCL0-YENV;
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cl->ClFlags |= InUseMask;
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TRAIL_CLREF(cl);
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PREG->u.EC.ClTrail = TR-(tr_fr_ptr)TrailBase;
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PREG->u.EC.ClENV = LCL0-YENV;*/
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cl->ClFlags |= InUseMask;
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TRAIL_CLREF(cl);
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}
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}
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#endif
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PREG = NEXTOP(PREG, EC);
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GONext();
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ENDBOp();
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/* exit logical pred */
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BOp(dealloc_for_logical_pred, l);
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{
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yamop *ecl = (yamop *)PREG->u.l.l;
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PREG = NEXTOP(PREG, l);
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/* check first if environment is protected */
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BEGP(pt0);
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pt0 = (CELL *) YENV;
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#ifdef FROZEN_STACKS
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{
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choiceptr top_b = PROTECT_FROZEN_B(B);
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#ifdef SBA
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if (pt0 > (CELL *) top_b || pt0 < H) {
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GONext();
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}
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#else
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if (pt0 > (CELL *) top_b) {
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GONext();
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}
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#endif
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}
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#else
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if (pt0 > (CELL *)B) {
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GONext();
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}
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#endif /* FROZEN_STACKS */
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ENDP(pt0);
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#if defined(YAPOR) || defined(THREADS)
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{
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Clause *cl = (Clause *)(ecl->u.EC.ClBase);
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Term tc = AbsPair(((CELL *)&(cl->ClFlags)));
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/* Question: how do we find the trail cell we want to reset? */
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/* Quick hack: search for it */
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tr_fr_ptr trp = (((choiceptr) YENV[E_CB])->cp_tr);
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while (TrailTerm(trp) != tc) {
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trp++;
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}
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/* the correct solution would be to store this in the environment */
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RESET_VARIABLE(&TrailTerm(trp));
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LOCK(cl->ClLock);
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DEC_CLREF_COUNT(cl);
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UNLOCK(cl->ClLock);
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}
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#else
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if (ecl->u.EC.ClENV == LCL0-YENV) {
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Clause *cl = (Clause *)(ecl->u.EC.ClBase);
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/* if the environment is protected we can't do nothing */
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/* unmark the clause */
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cl->ClFlags &= ~InUseMask;
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ecl->u.EC.ClENV = 0;
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RESET_VARIABLE((CELL *)((tr_fr_ptr)TrailBase+ecl->u.EC.ClTrail));
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if ((cl->ClFlags & ErasedMask) && (ecl->u.EC.ClRefs == 0)) {
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ErCl(cl);
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}
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}
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#endif
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}
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GONext();
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ENDBOp();
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/*****************************************************************
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* try and retry of dynamic predicates *
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*****************************************************************/
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13
C/amasm.c
13
C/amasm.c
@ -45,7 +45,6 @@ STATIC_PROTO(COUNT emit_count, (CELL));
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STATIC_PROTO(OPCODE emit_op, (op_numbers));
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STATIC_PROTO(void a_cl, (op_numbers));
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STATIC_PROTO(void a_cle, (op_numbers));
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STATIC_PROTO(void a_cld, (op_numbers));
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STATIC_PROTO(void a_e, (op_numbers));
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STATIC_PROTO(void a_ue, (op_numbers, op_numbers));
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STATIC_PROTO(void a_v, (op_numbers));
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@ -347,16 +346,6 @@ a_cle(op_numbers opcode)
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GONEXT(EC);
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}
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static void
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a_cld(op_numbers opcode)
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{
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if (pass_no) {
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code_p->opc = emit_op(opcode);
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code_p->u.l.l = (CODEADDR)(((Clause *)code_addr)->u2.ClExt);
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}
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GONEXT(l);
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}
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inline static void
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a_e(op_numbers opcode)
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{
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@ -1404,8 +1393,6 @@ a_deallocate(void)
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a_cle(_alloc_for_logical_pred);
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a_e(_allocate);
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}
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if (CurrentPred->PredFlags & LogUpdatePredFlag)
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a_cld(_dealloc_for_logical_pred);
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if (NEXTOPC == execute_op) {
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cpc = cpc->nextInst;
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a_p(_dexecute);
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@ -1225,6 +1225,7 @@ CreateDBStruct(Term Tm, DBProp p, int InFlag)
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pp->Entry = (CELL) Tm;
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pp->Code = NULL;
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pp->DBRefs = NULL;
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pp->NOfCells = 1;
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INIT_LOCK(pp->lock);
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INIT_DBREF_COUNT(pp);
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return(pp);
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@ -1253,6 +1254,7 @@ CreateDBStruct(Term Tm, DBProp p, int InFlag)
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pp->Entry = (CELL) Tm;
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pp->Code = NULL;
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pp->DBRefs = NULL;
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pp->NOfCells = 1;
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INIT_LOCK(pp->lock);
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INIT_DBREF_COUNT(pp);
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return(pp);
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160
C/heapgc.c
160
C/heapgc.c
@ -500,7 +500,7 @@ store_ref_in_dbtable(DBRef entry)
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if ((ADDR)new > TrailTop-1024)
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growtrail(64 * 1024L);
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new->val = entry;
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new->lim = entry->Contents+entry->NOfCells;
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new->lim = (CELL *)((CODEADDR)entry+SizeOfBlock((CODEADDR)entry));
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new->left = new->right = NULL;
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if (db_vec == db_vec0) {
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db_vec++;
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@ -526,6 +526,42 @@ store_ref_in_dbtable(DBRef entry)
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}
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}
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/* init the table */
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static void
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store_cl_in_dbtable(Clause *cl)
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{
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dbentry parent = db_vec0;
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dbentry new = db_vec;
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if ((ADDR)new > TrailTop-1024)
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growtrail(64 * 1024L);
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new->val = (DBRef)cl;
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new->lim = (CELL *)((CODEADDR)cl + SizeOfBlock((CODEADDR)cl));
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new->left = new->right = NULL;
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if (db_vec == db_vec0) {
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db_vec++;
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return;
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}
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db_vec++;
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parent = db_vec0;
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beg:
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if ((DBRef)cl < parent->val) {
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if (parent->right == NULL) {
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parent->right = new;
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} else {
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parent = parent->right;
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goto beg;
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}
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} else {
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if (parent->left == NULL) {
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parent->left = new;
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} else {
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parent = parent->left;
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goto beg;
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}
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}
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}
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/* find an element in the dbentries table */
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static DBRef
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find_ref_in_dbtable(DBRef entry)
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@ -533,8 +569,9 @@ find_ref_in_dbtable(DBRef entry)
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dbentry current = db_vec0;
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while (current != NULL) {
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if (current->val < entry && current->lim > (CELL *)entry)
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if (current->val < entry && current->lim > (CELL *)entry) {
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return(current->val);
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}
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if (entry < current->val)
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current = current->right;
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else
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@ -554,6 +591,8 @@ mark_db_fixed(CELL *ptr) {
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static void
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init_dbtable(tr_fr_ptr trail_ptr) {
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Clause *cl = DeadClauses;
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db_vec0 = db_vec = (dbentry)TR;
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while (trail_ptr > (tr_fr_ptr)TrailBase) {
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register CELL trail_cell;
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@ -565,6 +604,7 @@ init_dbtable(tr_fr_ptr trail_ptr) {
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if (!IsVarTerm(trail_cell) && IsPairTerm(trail_cell)) {
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CELL *pt0 = RepPair(trail_cell);
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/* DB pointer */
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CODEADDR entry;
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CELL flags;
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#ifdef FROZEN_STACKS /* TRAIL */
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@ -583,14 +623,18 @@ init_dbtable(tr_fr_ptr trail_ptr) {
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flags = Flags((CELL)pt0);
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/* for the moment, if all references to the term in the stacks
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are only pointers, reset the flag */
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entry = ((CODEADDR)pt0 - (CELL) &(((DBRef) NIL)->Flags));
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if (FlagOn(DBClMask, flags)) {
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if (FlagOn(DBNoVars, flags)) {
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CODEADDR entry = ((CODEADDR)pt0 - (CELL) &(((DBRef) NIL)->Flags));
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store_ref_in_dbtable((DBRef)entry);
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}
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store_ref_in_dbtable((DBRef)entry);
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} else {
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store_cl_in_dbtable((Clause *)entry);
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}
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}
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}
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while (cl != NULL) {
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store_cl_in_dbtable(cl);
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cl = cl->u.NextCl;
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}
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if (db_vec == db_vec0) {
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/* could not find any entries: probably using LOG UPD semantics */
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db_vec0 = NULL;
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@ -879,15 +923,13 @@ mark_variable(CELL_PTR current)
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if ((Functor)cnext == FunctorDBRef) {
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DBRef tref = DBRefOfTerm(ccur);
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/* make sure the reference is marked as in use */
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if (tref->Flags & InUseMask) {
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if ((tref->Flags & ErasedMask) &&
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tref->Parent != NULL &&
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tref->Parent->KindOfPE & LogUpdDBBit) {
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*current = MkDBRefTerm(DBErasedMarker);
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MARK(current);
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} else {
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tref->Flags |= GcFoundMask;
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}
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if ((tref->Flags & ErasedMask) &&
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tref->Parent != NULL &&
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tref->Parent->KindOfPE & LogUpdDBBit) {
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*current = MkDBRefTerm(DBErasedMarker);
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MARK(current);
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} else {
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tref->Flags |= GcFoundMask;
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}
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} else {
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mark_db_fixed(next);
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@ -1065,11 +1107,15 @@ mark_environments(CELL_PTR gc_ENV, OPREG size, CELL *pvbmap)
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while (gc_ENV != NULL) { /* no more environments */
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Int bmap = 0;
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int currv = 0;
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Clause *cl;
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#ifdef DEBUG
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if (size < 0 || size > 512)
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YP_fprintf(YP_stderr,"Oops, env size for %p is %ld\n", gc_ENV, (unsigned long int)size);
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#endif
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if ((cl = (Clause *)find_ref_in_dbtable((DBRef)gc_ENV[E_CP])) != NULL) {
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cl->ClFlags |= GcFoundMask;
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}
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/* for each saved variable */
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if (size > EnvSizeInCells) {
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int tsize = size - EnvSizeInCells;
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@ -1367,7 +1413,14 @@ mark_choicepoints(register choiceptr gc_B, tr_fr_ptr saved_TR, int very_verbose)
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op_numbers opnum;
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register OPCODE op;
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yamop *rtp = gc_B->cp_ap;
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Clause *cl;
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if ((cl = (Clause *)find_ref_in_dbtable((DBRef)rtp)) != NULL) {
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cl->ClFlags |= GcFoundMask;
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}
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if ((cl = (Clause *)find_ref_in_dbtable((DBRef)(gc_B->cp_b))) != NULL) {
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cl->ClFlags |= GcFoundMask;
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}
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#ifdef EASY_SHUNTING
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current_B = gc_B;
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prev_HB = HB;
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@ -1393,12 +1446,19 @@ mark_choicepoints(register choiceptr gc_B, tr_fr_ptr saved_TR, int very_verbose)
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}
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if (very_verbose) {
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switch (opnum) {
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case _retry_c:
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if (gc_B->cp_ap == RETRY_C_RECORDED_CODE
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|| gc_B->cp_ap == RETRY_C_RECORDED_K_CODE
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|| gc_B->cp_ap == RETRY_C_DRECORDED_CODE
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|| gc_B->cp_ap == RETRY_C_RECORDEDP_CODE) {
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DBRef entryref = (DBRef)EXTRA_CBACK_ARG(3,1);
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entryref->Flags |= GcFoundMask;
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}
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case _or_else:
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case _or_last:
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case _Nstop:
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case _switch_last:
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case _switch_l_list:
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case _retry_c:
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case _retry_userc:
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case _trust_logical_pred:
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case _retry_profiled:
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@ -1751,6 +1811,7 @@ sweep_trail(choiceptr gc_B, tr_fr_ptr old_TR)
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Int hp_entrs = 0, hp_erased = 0, hp_not_in_use = 0,
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hp_in_use_erased = 0, code_entries = 0;
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#endif
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Clause **cptr, *cl;
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#ifndef FROZEN_STACKS
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/*
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@ -1852,32 +1913,47 @@ sweep_trail(choiceptr gc_B, tr_fr_ptr old_TR)
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#endif /* FROZEN_STACKS */
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flags = Flags((CELL)pt0);
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#ifdef DEBUG
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if (FlagOn(DBClMask, flags)) {
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hp_entrs++;
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if (!FlagOn(GcFoundMask, flags)) {
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hp_not_in_use++;
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if (FlagOn(ErasedMask, flags)) {
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hp_erased++;
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}
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} else {
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if (FlagOn(ErasedMask, flags)) {
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hp_in_use_erased++;
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}
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hp_entrs++;
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if (!FlagOn(GcFoundMask, flags)) {
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hp_not_in_use++;
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if (!FlagOn(DBClMask, flags)) {
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code_entries++;
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}
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if (FlagOn(ErasedMask, flags)) {
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hp_erased++;
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}
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} else {
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code_entries++;
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if (FlagOn(ErasedMask, flags)) {
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hp_in_use_erased++;
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}
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}
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#endif
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if (!FlagOn(GcFoundMask, flags)) {
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if (!FlagOn(GcFoundMask, flags)) {
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if (FlagOn(DBClMask, flags)) {
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Flags((CELL)pt0) = ResetFlag(InUseMask, flags);
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if (FlagOn(ErasedMask, flags)) {
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ErDBE((DBRef) ((CELL)pt0 - (CELL) &(((DBRef) NIL)->Flags)));
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DBRef dbr = (DBRef) ((CELL)pt0 - (CELL) &(((DBRef) NIL)->Flags));
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dbr->Flags &= ~InUseMask;
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DEC_DBREF_COUNT(dbr);
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if (dbr->Flags & ErasedMask) {
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ErDBE(dbr);
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}
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} else {
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Clause *cl = ClauseFlagsToClause((CELL)pt0);
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int erase;
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DEC_CLREF_COUNT(cl);
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cl->ClFlags &= ~InUseMask;
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erase = (cl->ClFlags & ErasedMask)
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#if defined(YAPOR) || defined(THREADS)
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&& (cl->ref_count == 0)
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#endif
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;
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if (erase) {
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/* at this point,
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no one is accessing the clause */
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ErCl(cl);
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}
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RESET_VARIABLE(&TrailTerm(dest));
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discard_trail_entries++;
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}
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RESET_VARIABLE(&TrailTerm(dest));
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discard_trail_entries++;
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} else {
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Flags((CELL)pt0) = ResetFlag(GcFoundMask, flags);
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}
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@ -1959,7 +2035,21 @@ sweep_trail(choiceptr gc_B, tr_fr_ptr old_TR)
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(unsigned long int)(OldHeapUsed-HeapUsed),
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(unsigned long int)((OldHeapUsed-HeapUsed)/(OldHeapUsed/100)),
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(unsigned long int)OldHeapUsed);
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}
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cptr = &(DeadClauses);
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cl = DeadClauses;
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while (cl != NULL) {
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if (!(cl->ClFlags & GcFoundMask)) {
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char *ocl = (char *)cl;
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cl = cl->u.NextCl;
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*cptr = cl;
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FreeCodeSpace(ocl);
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} else {
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cl->ClFlags &= ~GcFoundMask;
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cptr = &(cl->u.NextCl);
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cl = cl->u.NextCl;
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}
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}
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}
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@ -252,10 +252,9 @@
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OPCODE(profiled_retry_me ,ld),
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OPCODE(profiled_trust_me ,ld),
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OPCODE(profiled_retry_and_mark ,ld),
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OPCODE(try_logical_pred ,EC),
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OPCODE(try_logical_pred ,l),
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OPCODE(trust_logical_pred ,l),
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OPCODE(alloc_for_logical_pred ,l),
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OPCODE(dealloc_for_logical_pred,l),
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OPCODE(alloc_for_logical_pred ,EC),
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#ifdef SFUNC
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OPCODE(get_s_f ,),
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OPCODE(put_s_f ,),
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@ -651,7 +651,6 @@ RestoreClause(Clause *Cl, int mode)
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case _retry_profiled:
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case _try_logical_pred:
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case _trust_logical_pred:
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case _dealloc_for_logical_pred:
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case _execute:
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case _dexecute:
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case _jump:
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||||
@ -16,6 +16,9 @@
|
||||
|
||||
<h2>Yap-4.3.23:</h2>
|
||||
<ul>
|
||||
<li>FIXED: garbage collector should recover dynamic clauses
|
||||
and logical semantics DB. Trust gc to recover active clauses </li>
|
||||
<li>FIXED: read_vars was called with unbound argument.</li>
|
||||
<li>FIXED: backtrackable C-predicates (thanks to Christophe
|
||||
Billard for sending the file).</li>
|
||||
<li>FIXED: new options for file_property (Nicos).</li>
|
||||
|
||||
@ -285,7 +285,7 @@ retract(C) :-
|
||||
'$retract'(C,M).
|
||||
'$retract'(C,M) :-
|
||||
'$check_head_and_body'(C,H,B,retract(M:C)),
|
||||
'$is_dynamic'(H, M), !,
|
||||
'$is_dynamic'(H,M), !,
|
||||
'$recordedp'(M:H,(H:-B),R), erase(R).
|
||||
'$retract'(C,M) :-
|
||||
'$check_head_and_body'(C,H,B,retract(M:C)),
|
||||
@ -311,7 +311,7 @@ retract(C,R) :- !,
|
||||
db_reference(R), '$is_dynamic'(H,M), !,
|
||||
instance(R,(H:-B)), erase(R).
|
||||
'$retract'(C,M,R) :-
|
||||
'$head_and_body'(C,H,B,retract(C,R)),
|
||||
'$check_head_and_body'(C,H,B,retract(C,R)),
|
||||
'$is_dynamic'(H,M), !,
|
||||
var(R),
|
||||
'$recordedp'(M:H,(H:-B),R),
|
||||
|
||||
Reference in New Issue
Block a user