/************************************************************************* * * * YAP Prolog * * * * Yap Prolog was developed at NCCUP - Universidade do Porto * * * * Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 * * * ************************************************************************** * * * File: cdmgr.c * * comments: Code manager * * * * Last rev: $Date: 2008-07-22 23:34:44 $,$Author: vsc $ * * $Log: not supported by cvs2svn $ * Revision 1.230 2008/06/02 17:20:28 vsc * fix abolish bug * * Revision 1.229 2008/05/28 17:18:35 vsc * thread fixes * * Revision 1.228 2008/04/28 23:02:32 vsc * fix bug in current_predicate/2 * fix bug in c_interface. * * Revision 1.227 2008/04/11 16:30:27 ricroc * *** empty log message *** * * Revision 1.226 2008/04/01 22:28:41 vsc * put YAPOR back to life. * * Revision 1.225 2008/04/01 08:42:45 vsc * fix restore and small VISTA thingies * * Revision 1.224 2008/03/31 22:56:21 vsc * more fixes * * Revision 1.223 2008/03/25 16:45:53 vsc * make or-parallelism compile again * * Revision 1.222 2008/03/24 23:48:47 vsc * fix maximum number of threads open error * * Revision 1.221 2008/03/22 23:35:00 vsc * fix bug in all_calls * * Revision 1.220 2008/03/17 18:31:16 vsc * fix breakage in module system * disable stack writing in error for now * * Revision 1.219 2008/02/22 15:08:33 vsc * Big update to support more SICStus/SWI like message handling * fix YAPSHAREDIR * fix yap.tex (Bernd) * * Revision 1.218 2008/01/23 17:57:44 vsc * valgrind it! * enable atom garbage collection. * * Revision 1.217 2007/12/26 19:50:40 vsc * new version of clp(fd) * fix deadlock with empty args facts in clause/2. * * Revision 1.216 2007/12/23 22:48:44 vsc * recover stack space * * Revision 1.215 2007/12/18 17:46:58 vsc * purge_clauses does not need to do anything if there are no clauses * fix gprof bugs. * * Revision 1.214 2007/11/28 23:52:14 vsc * junction tree algorithm * * Revision 1.213 2007/11/26 23:43:07 vsc * fixes to support threads and assert correctly, even if inefficiently. * * Revision 1.212 2007/11/16 14:58:40 vsc * implement sophisticated operations with matrices. * * Revision 1.211 2007/11/08 09:53:01 vsc * YAP would always say the system has tabling! * * Revision 1.210 2007/11/07 09:25:27 vsc * speedup meta-calls * * Revision 1.209 2007/11/06 17:02:11 vsc * compile ground terms away. * * Revision 1.208 2007/11/01 10:01:35 vsc * fix uninitalised lock and reconsult test. * * Revision 1.207 2007/10/29 22:48:54 vsc * small fixes * * Revision 1.206 2007/04/10 22:13:20 vsc * fix max modules limitation * * Revision 1.205 2007/03/26 15:18:43 vsc * debugging and clause/3 over tabled predicates would kill YAP. * * Revision 1.204 2007/01/25 22:11:55 vsc * all/3 should fail on no solutions. * get rid of annoying gcc complaints. * * Revision 1.203 2007/01/24 10:01:38 vsc * fix matrix mess * * Revision 1.202 2006/12/27 01:32:37 vsc * diverse fixes * * Revision 1.201 2006/12/13 16:10:14 vsc * several debugger and CLP(BN) improvements. * * Revision 1.200 2006/11/27 17:42:02 vsc * support for UNICODE, and other bug fixes. * * Revision 1.199 2006/11/15 00:13:36 vsc * fixes for indexing code. * * Revision 1.198 2006/11/14 11:42:25 vsc * fix bug in growstack * * Revision 1.197 2006/11/06 18:35:03 vsc * 1estranha * * Revision 1.196 2006/10/16 17:12:48 vsc * fixes for threaded version. * * Revision 1.195 2006/10/11 17:24:36 vsc * make sure we only follow pointers *before* we removed the respective code block, * ie don't kill the child before checking pointers from parent! * * Revision 1.194 2006/10/11 15:08:03 vsc * fix bb entries * comment development code for timestamp overflow. * * Revision 1.193 2006/10/11 14:53:57 vsc * fix memory leak * fix overflow handling * VS: ---------------------------------------------------------------------- * * Revision 1.192 2006/10/10 14:08:16 vsc * small fixes on threaded implementation. * * Revision 1.191 2006/09/20 20:03:51 vsc * improve indexing on floats * fix sending large lists to DB * * Revision 1.190 2006/08/07 18:51:44 vsc * fix garbage collector not to try to garbage collect when we ask for large * chunks of stack in a single go. * * Revision 1.189 2006/05/24 02:35:39 vsc * make chr work and other minor fixes. * * Revision 1.188 2006/05/18 16:33:04 vsc * fix info reported by memory manager under DL_MALLOC and SYSTEM_MALLOC * * Revision 1.187 2006/04/29 01:15:18 vsc * fix expand_consult patch * * Revision 1.186 2006/04/28 17:53:44 vsc * fix the expand_consult patch * * Revision 1.185 2006/04/28 13:23:22 vsc * fix number of overflow bugs affecting threaded version * make current_op faster. * * Revision 1.184 2006/04/27 14:11:57 rslopes * *** empty log message *** * * Revision 1.183 2006/03/29 16:00:10 vsc * make tabling compile * * Revision 1.182 2006/03/24 16:26:26 vsc * code review * * Revision 1.181 2006/03/22 20:07:28 vsc * take better care of zombies * * Revision 1.180 2006/03/22 16:14:20 vsc * don't be too eager at throwing indexing code for static predicates away. * * Revision 1.179 2006/03/21 17:11:39 vsc * prevent breakage * * Revision 1.178 2006/03/20 19:51:43 vsc * fix indexing and tabling bugs * * Revision 1.177 2006/03/06 14:04:56 vsc * fixes to garbage collector * fixes to debugger * * Revision 1.176 2006/02/01 13:28:56 vsc * bignum support fixes * * Revision 1.175 2006/01/08 03:12:00 vsc * fix small bug in attvar handling. * * Revision 1.174 2005/12/23 00:20:13 vsc * updates to gprof * support for __POWER__ * Try to saveregs before _longjmp. * * Revision 1.173 2005/12/17 03:25:39 vsc * major changes to support online event-based profiling * improve error discovery and restart on scanner. * * Revision 1.172 2005/11/23 03:01:33 vsc * fix several bugs in save/restore.b * * Revision 1.171 2005/10/29 01:28:37 vsc * make undefined more ISO compatible. * * Revision 1.170 2005/10/18 17:04:43 vsc * 5.1: * - improvements to GC * 2 generations * generic speedups * - new scheme for attvars * - hProlog like interface also supported * - SWI compatibility layer * - extra predicates * - global variables * - moved to Prolog module * - CLP(R) by Leslie De Koninck, Tom Schrijvers, Cristian Holzbaur, Bart * Demoen and Jan Wielemacker * - load_files/2 * * from 5.0.1 * * - WIN32 missing include files (untested) * - -L trouble (my thanks to Takeyuchi Shiramoto-san)! * - debugging of backtrable user-C preds would core dump. * - redeclaring a C-predicate as Prolog core dumps. * - badly protected YapInterface.h. * - break/0 was failing at exit. * - YAP_cut_fail and YAP_cut_succeed were different from manual. * - tracing through data-bases could core dump. * - cut could break on very large computations. * - first pass at BigNum issues (reported by Roberto). * - debugger could get go awol after fail port. * - weird message on wrong debugger option. * * Revision 1.169 2005/10/15 02:05:57 vsc * fix for trying to add clauses to a C pred. * * Revision 1.168 2005/08/05 14:55:02 vsc * first steps to allow mavars with tabling * fix trailing for tabling with multiple get_cons * * Revision 1.167 2005/08/02 03:09:49 vsc * fix debugger to do well nonsource predicates. * * Revision 1.166 2005/08/01 15:40:37 ricroc * TABLING NEW: better support for incomplete tabling * * Revision 1.165 2005/07/06 19:33:52 ricroc * TABLING: answers for completed calls can now be obtained by loading (new option) or executing (default) them from the trie data structure. * * Revision 1.164 2005/07/06 15:10:03 vsc * improvements to compiler: merged instructions and fixes for -> * * Revision 1.163 2005/06/08 00:35:27 vsc * fix silly calls such as 0.15 ( bug reported by Jude Shavlik) * * Revision 1.162 2005/06/04 07:27:33 ricroc * long int support for tabling * * Revision 1.161 2005/06/03 08:26:32 ricroc * float support for tabling * * Revision 1.160 2005/06/01 14:02:47 vsc * get_rid of try_me?, retry_me? and trust_me? instructions: they are not * significantly used nowadays. * * Revision 1.159 2005/05/31 19:42:27 vsc * insert some more slack for indices in LU * Use doubly linked list for LU indices so that updating is less cumbersome. * * Revision 1.158 2005/05/31 00:30:23 ricroc * remove abort_yapor function * * Revision 1.157 2005/05/12 03:36:32 vsc * debugger was making predicates meta instead of testing * fix handling of dbrefs in facts and in subarguments. * * Revision 1.156 2005/04/20 04:02:15 vsc * fix a few variable warnings * fix erase clause to pass a pointer to clause, not code * get rid of Yap4.4 code in Yap_EraseStaticClause * * Revision 1.155 2005/04/10 04:01:10 vsc * bug fixes, I hope! * * Revision 1.154 2005/03/04 20:30:11 ricroc * bug fixes for YapTab support * * Revision 1.153 2005/02/25 03:39:44 vsc * fix fixes to undefp * fix bug where clause mistook cp for ap * * Revision 1.152 2005/02/08 18:04:57 vsc * library_directory may not be deterministic (usually it isn't). * * Revision 1.151 2005/02/08 04:05:23 vsc * fix mess with add clause * improves on sigsegv handling * * Revision 1.150 2005/01/28 23:14:34 vsc * move to Yap-4.5.7 * Fix clause size * * Revision 1.149 2005/01/05 05:35:01 vsc * get rid of debugging stub. * * Revision 1.148 2005/01/04 02:50:21 vsc * - allow MegaClauses with blobs * - change Diffs to be thread specific * - include Christian's updates * * Revision 1.147 2004/12/28 22:20:35 vsc * some extra bug fixes for trail overflows: some cannot be recovered that easily, * some can. * * Revision 1.146 2004/12/20 21:44:57 vsc * more fixes to CLPBN * fix some Yap overflows. * * Revision 1.145 2004/12/16 05:57:23 vsc * fix overflows * * Revision 1.144 2004/12/08 00:10:48 vsc * more grow fixes * * Revision 1.143 2004/12/05 05:01:23 vsc * try to reduce overheads when running with goal expansion enabled. * CLPBN fixes * Handle overflows when allocating big clauses properly. * * Revision 1.142 2004/11/18 22:32:31 vsc * fix situation where we might assume nonextsing double initialisation of C predicates (use * Hidden Pred Flag). * $host_type was double initialised. * * Revision 1.141 2004/11/04 18:22:31 vsc * don't ever use memory that has been freed (that was done by LU). * generic fixes for WIN32 libraries * * Revision 1.140 2004/10/31 02:18:03 vsc * fix bug in handling Yap heap overflow while adding new clause. * * Revision 1.139 2004/10/28 20:12:21 vsc * Use Doug Lea's malloc as an alternative to YAP's standard malloc * don't use TR directly in scanner/parser, this avoids trouble with ^C while * consulting large files. * pass gcc -mno-cygwin to library compilation in cygwin environment (cygwin should * compile out of the box now). * * Revision 1.138 2004/10/26 20:15:51 vsc * More bug fixes for overflow handling * * Revision 1.137 2004/10/22 16:53:19 vsc * bug fixes * * Revision 1.136 2004/10/06 16:55:46 vsc * change configure to support big mem configs * get rid of extra globals * fix trouble with multifile preds * * Revision 1.135 2004/09/30 21:37:40 vsc * fixes for thread support * * Revision 1.134 2004/09/30 19:51:53 vsc * fix overflow from within clause/2 * * Revision 1.133 2004/09/27 20:45:02 vsc * Mega clauses * Fixes to sizeof(expand_clauses) which was being overestimated * Fixes to profiling+indexing * Fixes to reallocation of memory after restoring * Make sure all clauses, even for C, end in _Ystop * Don't reuse space for Streams * Fix Stream_F on StreaNo+1 * * Revision 1.132 2004/09/17 19:34:51 vsc * simplify frozen/2 * * Revision 1.131 2004/09/08 17:56:45 vsc * source: a(X) :- true is a fact! * fix use of value after possible overflow in IPred * * Revision 1.130 2004/09/07 16:48:04 vsc * fix bug in unwinding trail at amiops.h * * Revision 1.129 2004/09/07 16:25:22 vsc * memory management bug fixes * * Revision 1.128 2004/09/03 03:11:07 vsc * memory management fixes * * Revision 1.127 2004/08/16 21:02:04 vsc * more fixes for ! * * Revision 1.126 2004/07/22 21:32:20 vsc * debugger fixes * initial support for JPL * bad calls to garbage collector and gc * debugger fixes * * Revision 1.125 2004/06/29 19:04:41 vsc * fix multithreaded version * include new version of Ricardo's profiler * new predicat atomic_concat * allow multithreaded-debugging * small fixes * * Revision 1.124 2004/06/05 03:36:59 vsc * coroutining is now a part of attvars. * some more fixes. * * Revision 1.123 2004/05/17 21:42:09 vsc * misc fixes * * Revision 1.122 2004/05/13 21:36:45 vsc * get rid of pesky debugging prints * * Revision 1.121 2004/05/13 20:54:57 vsc * debugger fixes * make sure we always go back to current module, even during initizlization. * * Revision 1.120 2004/04/27 16:21:16 vsc * stupid bug * * Revision 1.119 2004/04/27 15:03:43 vsc * more fixes for expand_clauses * * Revision 1.118 2004/04/14 19:10:23 vsc * expand_clauses: keep a list of clauses to expand * fix new trail scheme for multi-assignment variables * * Revision 1.117 2004/04/07 22:04:03 vsc * fix memory leaks * * Revision 1.116 2004/03/31 01:03:09 vsc * support expand group of clauses * * Revision 1.115 2004/03/19 11:35:42 vsc * trim_trail for default machine * be more aggressive about try-retry-trust chains. * - handle cases where block starts with a wait * - don't use _killed instructions, just let the thing rot by itself. * * * *************************************************************************/ #ifdef SCCS static char SccsId[] = "@(#)cdmgr.c 1.1 05/02/98"; #endif #include "Yap.h" #include "clause.h" #include "yapio.h" #include "eval.h" #include "tracer.h" #ifdef YAPOR #include "or.macros.h" #endif /* YAPOR */ #ifdef TABLING #include "tab.macros.h" #endif /* TABLING */ #if HAVE_STRING_H #include #endif STATIC_PROTO(void retract_all, (PredEntry *, int)); STATIC_PROTO(void add_first_static, (PredEntry *, yamop *, int)); STATIC_PROTO(void add_first_dynamic, (PredEntry *, yamop *, int)); STATIC_PROTO(void asserta_stat_clause, (PredEntry *, yamop *, int)); STATIC_PROTO(void asserta_dynam_clause, (PredEntry *, yamop *)); STATIC_PROTO(void assertz_stat_clause, (PredEntry *, yamop *, int)); STATIC_PROTO(void assertz_dynam_clause, (PredEntry *, yamop *)); STATIC_PROTO(void expand_consult, ( void )); STATIC_PROTO(int not_was_reconsulted, (PredEntry *, Term, int)); STATIC_PROTO(int RemoveIndexation, (PredEntry *)); STATIC_PROTO(int static_in_use, (PredEntry *, int)); #if !defined(YAPOR) && !defined(THREADS) STATIC_PROTO(Int search_for_static_predicate_in_use, (PredEntry *, int)); STATIC_PROTO(void mark_pred, (int, PredEntry *)); STATIC_PROTO(void do_toggle_static_predicates_in_use, (int)); #endif STATIC_PROTO(Int p_number_of_clauses, ( USES_REGS1 )); STATIC_PROTO(Int p_compile, ( USES_REGS1 )); STATIC_PROTO(Int p_compile_dynamic, ( USES_REGS1 )); STATIC_PROTO(Int p_purge_clauses, ( USES_REGS1 )); STATIC_PROTO(Int p_setspy, ( USES_REGS1 )); STATIC_PROTO(Int p_rmspy, ( USES_REGS1 )); STATIC_PROTO(Int p_startconsult, ( USES_REGS1 )); STATIC_PROTO(Int p_showconslultlev, ( USES_REGS1 )); STATIC_PROTO(Int p_endconsult, ( USES_REGS1 )); STATIC_PROTO(Int p_undefined, ( USES_REGS1 )); STATIC_PROTO(Int p_in_use, ( USES_REGS1 )); STATIC_PROTO(Int p_new_multifile, ( USES_REGS1 )); STATIC_PROTO(Int p_is_multifile, ( USES_REGS1 )); STATIC_PROTO(Int p_optimizer_on, ( USES_REGS1 )); STATIC_PROTO(Int p_optimizer_off, ( USES_REGS1 )); STATIC_PROTO(Int p_is_dynamic, ( USES_REGS1 )); STATIC_PROTO(Int p_kill_dynamic, ( USES_REGS1 )); STATIC_PROTO(Int p_compile_mode, ( USES_REGS1 )); STATIC_PROTO(Int p_is_profiled, ( USES_REGS1 )); STATIC_PROTO(Int p_profile_info, ( USES_REGS1 )); STATIC_PROTO(Int p_profile_reset, ( USES_REGS1 )); STATIC_PROTO(Int p_is_call_counted, ( USES_REGS1 )); STATIC_PROTO(Int p_call_count_info, ( USES_REGS1 )); STATIC_PROTO(Int p_call_count_set, ( USES_REGS1 )); STATIC_PROTO(Int p_call_count_reset, ( USES_REGS1 )); STATIC_PROTO(Int p_toggle_static_predicates_in_use, ( USES_REGS1 )); STATIC_PROTO(Atom YapConsultingFile, ( USES_REGS1 )); STATIC_PROTO(Int PredForCode,(yamop *, Atom *, UInt *, Term *)); STATIC_PROTO(void kill_first_log_iblock,(LogUpdIndex *, LogUpdIndex *, PredEntry *)); STATIC_PROTO(LogUpdIndex *find_owner_log_index,(LogUpdIndex *, yamop *)); STATIC_PROTO(StaticIndex *find_owner_static_index,(StaticIndex *, yamop *)); #define PredArity(p) (p->ArityOfPE) #define TRYCODE(G,F,N) ( (N)<5 ? (op_numbers)((int)F+(N)*3) : G) #define NEXTOP(V,TYPE) ((yamop *)(&((V)->u.TYPE.next))) #define IN_BLOCK(P,B,SZ) ((CODEADDR)(P) >= (CODEADDR)(B) && \ (CODEADDR)(P) < (CODEADDR)(B)+(SZ)) static PredEntry * PredForChoicePt(yamop *p_code) { while (TRUE) { op_numbers opnum; if (!p_code) return NULL; opnum = Yap_op_from_opcode(p_code->opc); switch(opnum) { case _Nstop: return NULL; case _jump: p_code = p_code->u.l.l; break; case _retry_me: case _trust_me: return p_code->u.Otapl.p; case _try_logical: case _retry_logical: case _trust_logical: case _count_retry_logical: case _count_trust_logical: case _profiled_retry_logical: case _profiled_trust_logical: return p_code->u.OtaLl.d->ClPred; #ifdef TABLING case _trie_trust_var: case _trie_retry_var: case _trie_trust_var_in_pair: case _trie_retry_var_in_pair: case _trie_trust_val: case _trie_retry_val: case _trie_trust_val_in_pair: case _trie_retry_val_in_pair: case _trie_trust_atom: case _trie_retry_atom: case _trie_trust_atom_in_pair: case _trie_retry_atom_in_pair: case _trie_trust_null: case _trie_retry_null: case _trie_trust_null_in_pair: case _trie_retry_null_in_pair: case _trie_trust_pair: case _trie_retry_pair: case _trie_trust_appl: case _trie_retry_appl: case _trie_trust_appl_in_pair: case _trie_retry_appl_in_pair: case _trie_trust_extension: case _trie_retry_extension: case _trie_trust_double: case _trie_retry_double: case _trie_trust_longint: case _trie_retry_longint: case _trie_trust_gterm: case _trie_retry_gterm: return NULL; case _table_load_answer: case _table_try_answer: case _table_answer_resolution: case _table_completion: return NULL; /* ricroc: is this OK? */ /* compile error --> return ENV_ToP(gc_B->cp_cp); */ #endif /* TABLING */ case _or_else: if (p_code == p_code->u.Osblp.l) { /* repeat */ Atom at = AtomRepeatSpace; return RepPredProp(PredPropByAtom(at, PROLOG_MODULE)); } else { return p_code->u.Osblp.p0; } break; case _or_last: #ifdef YAPOR return p_code->u.Osblp.p0; #else return p_code->u.p.p; #endif /* YAPOR */ break; case _count_retry_me: case _retry_profiled: case _retry2: case _retry3: case _retry4: p_code = NEXTOP(p_code,l); break; default: return p_code->u.Otapl.p; } } return NULL; } PredEntry * Yap_PredForChoicePt(choiceptr cp) { if (cp == NULL) return NULL; return PredForChoicePt(cp->cp_ap); } static void InitConsultStack( void ) { CACHE_REGS LOCAL_ConsultLow = (consult_obj *)Yap_AllocCodeSpace(sizeof(consult_obj)*InitialConsultCapacity); if (LOCAL_ConsultLow == NULL) { Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"No Heap Space in InitCodes"); return; } LOCAL_ConsultCapacity = InitialConsultCapacity; LOCAL_ConsultBase = LOCAL_ConsultSp = LOCAL_ConsultLow + LOCAL_ConsultCapacity; } void Yap_ResetConsultStack( void ) { CACHE_REGS Yap_FreeCodeSpace((char *)LOCAL_ConsultLow); LOCAL_ConsultBase = LOCAL_ConsultSp = LOCAL_ConsultLow = NULL; LOCAL_ConsultCapacity = InitialConsultCapacity; } /****************************************************************** EXECUTING PROLOG CLAUSES ******************************************************************/ static int static_in_use(PredEntry *p, int check_everything) { #if defined(YAPOR) || defined(THREADS) return TRUE; #else CELL pflags = p->PredFlags; if (pflags & (DynamicPredFlag|LogUpdatePredFlag)) { return FALSE; } if (STATIC_PREDICATES_MARKED) { return (p->PredFlags & InUsePredFlag); } else { /* This code does not work for YAPOR or THREADS!!!!!!!! */ return(search_for_static_predicate_in_use(p, check_everything)); } #endif } /****************************************************************** ADDING AND REMOVE INFO TO A PROCEDURE ******************************************************************/ /* * we have three kinds of predicates: dynamic DynamicPredFlag * static CompiledPredFlag fast FastPredFlag all the * database predicates are supported for dynamic predicates only abolish and * assertz are supported for static predicates no database predicates are * supportted for fast predicates */ #define is_dynamic(pe) (pe->PredFlags & DynamicPredFlag) #define is_static(pe) (pe->PredFlags & CompiledPredFlag) #define is_logupd(pe) (pe->PredFlags & LogUpdatePredFlag) #ifdef TABLING #define is_tabled(pe) (pe->PredFlags & TabledPredFlag) #endif /* TABLING */ static PredEntry * get_pred(Term t, Term tmod, char *pname) { Term t0 = t; restart: if (IsVarTerm(t)) { Yap_Error(INSTANTIATION_ERROR, t0, pname); return NULL; } else if (IsAtomTerm(t)) { return RepPredProp(Yap_GetPredPropByAtom(AtomOfTerm(t), tmod)); } else if (IsIntegerTerm(t) && tmod == IDB_MODULE) { return Yap_FindLUIntKey(IntegerOfTerm(t)); } else if (IsApplTerm(t)) { Functor fun = FunctorOfTerm(t); if (IsExtensionFunctor(fun)) { Yap_Error(TYPE_ERROR_CALLABLE, t0, pname); return NULL; } if (fun == FunctorModule) { Term tmod = ArgOfTerm(1, t); if (IsVarTerm(tmod) ) { Yap_Error(INSTANTIATION_ERROR, t0, pname); return NULL; } if (!IsAtomTerm(tmod) ) { Yap_Error(TYPE_ERROR_ATOM, t0, pname); return NULL; } t = ArgOfTerm(2, t); goto restart; } return RepPredProp(Yap_GetPredPropByFunc(fun, tmod)); } else return NULL; } /****************************************************************** Mega Clauses ******************************************************************/ #define OrArgAdjust(P) #define TabEntryAdjust(P) #define DoubleInCodeAdjust(D) #define IntegerInCodeAdjust(D) #define IntegerAdjust(D) (D) #define PtoPredAdjust(X) (X) #define PtoOpAdjust(X) (X) #define PtoLUClauseAdjust(P) (P) #define PtoLUIndexAdjust(P) (P) #define XAdjust(X) (X) #define YAdjust(X) (X) #define AtomTermAdjust(X) (X) #define CellPtoHeapAdjust(X) (X) #define FuncAdjust(X) (X) #define CodeAddrAdjust(X) (X) #define CodeComposedTermAdjust(X) (X) #define ConstantAdjust(X) (X) #define ArityAdjust(X) (X) #define OpcodeAdjust(X) (X) #define ModuleAdjust(X) (X) #define ExternalFunctionAdjust(X) (X) #define AdjustSwitchTable(X,Y,Z) #define DBGroundTermAdjust(X) (X) #define rehash(A,B,C) static Term BlobTermInCodeAdjust(Term t) { CACHE_REGS #if TAGS_FAST_OPS return t-LOCAL_ClDiff; #else return t+LOCAL_ClDiff; #endif } static Term ConstantTermAdjust (Term t) { if (IsAtomTerm(t)) return AtomTermAdjust(t); return t; } #include "rclause.h" #ifdef DEBUG static UInt total_megaclause, total_released, nof_megaclauses; #endif void Yap_BuildMegaClause(PredEntry *ap) { CACHE_REGS StaticClause *cl; UInt sz; MegaClause *mcl; yamop *ptr; UInt required; UInt has_blobs = 0; if (ap->PredFlags & (DynamicPredFlag|LogUpdatePredFlag|MegaClausePredFlag #ifdef TABLING |TabledPredFlag #endif /* TABLING */ |UDIPredFlag) || ap->cs.p_code.FirstClause == NULL || ap->cs.p_code.NOfClauses < 16) { return; } cl = ClauseCodeToStaticClause(ap->cs.p_code.FirstClause); sz = cl->ClSize; while (TRUE) { if (!(cl->ClFlags & FactMask)) return; /* no mega clause, sorry */ if (cl->ClSize != sz) return; /* no mega clause, sorry */ if (cl->ClCode == ap->cs.p_code.LastClause) break; has_blobs |= (cl->ClFlags & HasBlobsMask); cl = cl->ClNext; } /* ok, we got the chance for a mega clause */ if (has_blobs) { sz -= sizeof(StaticClause); } else { sz -= (UInt)NEXTOP((yamop *)NULL,p) + sizeof(StaticClause); } required = sz*ap->cs.p_code.NOfClauses+sizeof(MegaClause)+(UInt)NEXTOP((yamop *)NULL,l); #ifdef DEBUG total_megaclause += required; cl = ClauseCodeToStaticClause(ap->cs.p_code.FirstClause); total_released += ap->cs.p_code.NOfClauses*cl->ClSize; nof_megaclauses++; #endif while (!(mcl = (MegaClause *)Yap_AllocCodeSpace(required))) { if (!Yap_growheap(FALSE, required, NULL)) { /* just fail, the system will keep on going */ return; } } Yap_ClauseSpace += required; /* cool, it's our turn to do the conversion */ mcl->ClFlags = MegaMask | has_blobs; mcl->ClSize = required; mcl->ClPred = ap; mcl->ClItemSize = sz; mcl->ClNext = NULL; cl = ClauseCodeToStaticClause(ap->cs.p_code.FirstClause); ptr = mcl->ClCode; while (TRUE) { memcpy((void *)ptr, (void *)cl->ClCode, sz); if (has_blobs) { LOCAL_ClDiff = (char *)(ptr)-(char *)cl->ClCode; restore_opcodes(ptr, NULL PASS_REGS); } ptr = (yamop *)((char *)ptr + sz); if (cl->ClCode == ap->cs.p_code.LastClause) break; cl = cl->ClNext; } ptr->opc = Yap_opcode(_Ystop); cl = ClauseCodeToStaticClause(ap->cs.p_code.FirstClause); /* recover the space spent on the original clauses */ while (TRUE) { StaticClause *ncl, *curcl = cl; ncl = cl->ClNext; Yap_InformOfRemoval((CODEADDR)cl); Yap_ClauseSpace -= cl->ClSize; Yap_FreeCodeSpace((ADDR)cl); if (curcl->ClCode == ap->cs.p_code.LastClause) break; cl = ncl; } ap->cs.p_code.FirstClause = ap->cs.p_code.LastClause = mcl->ClCode; ap->PredFlags |= MegaClausePredFlag; } static void split_megaclause(PredEntry *ap) { StaticClause *start = NULL, *prev = NULL; MegaClause *mcl; yamop *ptr; UInt ncls = ap->cs.p_code.NOfClauses, i; RemoveIndexation(ap); mcl = ClauseCodeToMegaClause(ap->cs.p_code.FirstClause); for (i = 0, ptr = mcl->ClCode; i < ncls; i++) { StaticClause *new = (StaticClause *)Yap_AllocCodeSpace(sizeof(StaticClause)+mcl->ClItemSize+(UInt)NEXTOP((yamop *)NULL,p)); if (new == NULL) { if (!Yap_growheap(FALSE, (sizeof(StaticClause)+mcl->ClItemSize)*(ncls-i), NULL)) { while (start) { StaticClause *cl = start; start = cl->ClNext; Yap_InformOfRemoval((CODEADDR)cl); Yap_ClauseSpace -= cl->ClSize; Yap_FreeCodeSpace((char *)cl); } if (ap->ArityOfPE) { Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"while breaking up mega clause for %s/%d\n",RepAtom(NameOfFunctor(ap->FunctorOfPred))->StrOfAE,ap->ArityOfPE); } else { Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"while breaking up mega clause for %s\n", RepAtom((Atom)ap->FunctorOfPred)->StrOfAE); } return; } break; } Yap_ClauseSpace += sizeof(StaticClause)+mcl->ClItemSize+(UInt)NEXTOP((yamop *)NULL,p); new->ClFlags = StaticMask|FactMask; new->ClSize = mcl->ClItemSize; new->usc.ClPred = ap; new->ClNext = NULL; memcpy((void *)new->ClCode, (void *)ptr, mcl->ClItemSize); if (prev) { prev->ClNext = new; } else { start = new; } ptr = (yamop *)((char *)ptr + mcl->ClItemSize); prev = new; } ap->PredFlags &= ~MegaClausePredFlag; ap->cs.p_code.FirstClause = start->ClCode; ap->cs.p_code.LastClause = prev->ClCode; } /****************************************************************** Indexation Info ******************************************************************/ #define ByteAdr(X) ((Int) &(X)) /* Index a prolog pred, given its predicate entry */ /* ap is already locked. */ static void IPred(PredEntry *ap, UInt NSlots, yamop *next_pc) { yamop *BaseAddr; #ifdef DEBUG CACHE_REGS if (GLOBAL_Option['i' - 'a' + 1]) { Term tmod = ap->ModuleOfPred; if (!tmod) tmod = TermProlog; Yap_DebugPutc(LOCAL_c_error_stream,'\t'); Yap_DebugPlWrite(tmod); Yap_DebugPutc(LOCAL_c_error_stream,':'); if (ap->ModuleOfPred == IDB_MODULE) { Term t = Deref(ARG1); if (IsAtomTerm(t)) { Yap_DebugPlWrite(t); } else if (IsIntegerTerm(t)) { Yap_DebugPlWrite(t); } else { Functor f = FunctorOfTerm(t); Atom At = NameOfFunctor(f); Yap_DebugPlWrite(MkAtomTerm(At)); Yap_DebugPutc(LOCAL_c_error_stream,'/'); Yap_DebugPlWrite(MkIntTerm(ArityOfFunctor(f))); } } else { if (ap->ArityOfPE == 0) { Atom At = (Atom)ap->FunctorOfPred; Yap_DebugPlWrite(MkAtomTerm(At)); } else { Functor f = ap->FunctorOfPred; Atom At = NameOfFunctor(f); Yap_DebugPlWrite(MkAtomTerm(At)); Yap_DebugPutc(LOCAL_c_error_stream,'/'); Yap_DebugPlWrite(MkIntTerm(ArityOfFunctor(f))); } } Yap_DebugPutc(LOCAL_c_error_stream,'\n'); } #endif /* Do not try to index a dynamic predicate or one whithout args */ if (is_dynamic(ap)) { Yap_Error(SYSTEM_ERROR,TermNil,"trying to index a dynamic predicate"); return; } if ((BaseAddr = Yap_PredIsIndexable(ap, NSlots, next_pc)) != NULL) { ap->cs.p_code.TrueCodeOfPred = BaseAddr; ap->PredFlags |= IndexedPredFlag; } if (ap->PredFlags & (SpiedPredFlag|CountPredFlag|ProfiledPredFlag)) { ap->OpcodeOfPred = Yap_opcode(_spy_pred); ap->CodeOfPred = (yamop *)(&(ap->OpcodeOfPred)); #if defined(YAPOR) || defined(THREADS) } else if (ap->PredFlags & LogUpdatePredFlag && !(ap->PredFlags & ThreadLocalPredFlag) && ap->ModuleOfPred != IDB_MODULE) { ap->OpcodeOfPred = LOCKPRED_OPCODE; ap->CodeOfPred = (yamop *)(&(ap->OpcodeOfPred)); #endif } else { ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred; ap->OpcodeOfPred = ap->CodeOfPred->opc; } #ifdef DEBUG if (GLOBAL_Option['i' - 'a' + 1]) Yap_DebugPutc(LOCAL_c_error_stream,'\n'); #endif } void Yap_IPred(PredEntry *p, UInt NSlots, yamop *next_pc) { IPred(p, NSlots, next_pc); } #define GONEXT(TYPE) code_p = ((yamop *)(&(code_p->u.TYPE.next))) static void RemoveMainIndex(PredEntry *ap) { yamop *First = ap->cs.p_code.FirstClause; int spied = ap->PredFlags & (SpiedPredFlag|CountPredFlag|ProfiledPredFlag); ap->PredFlags &= ~IndexedPredFlag; if (First == NULL) { ap->cs.p_code.TrueCodeOfPred = FAILCODE; } else { ap->cs.p_code.TrueCodeOfPred = First; } if (First != NULL && spied) { ap->OpcodeOfPred = Yap_opcode(_spy_pred); ap->CodeOfPred = (yamop *)(&(ap->OpcodeOfPred)); } else if (ap->cs.p_code.NOfClauses > 1 #ifdef TABLING ||ap->PredFlags & TabledPredFlag #endif /* TABLING */ ) { ap->OpcodeOfPred = INDEX_OPCODE; ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred = (yamop *)(&(ap->OpcodeOfPred)); } else { ap->OpcodeOfPred = ap->cs.p_code.TrueCodeOfPred->opc; ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred; } #if defined(YAPOR) || defined(THREADS) if (ap->PredFlags & LogUpdatePredFlag && !(ap->PredFlags & ThreadLocalPredFlag) && ap->ModuleOfPred != IDB_MODULE) { ap->OpcodeOfPred = LOCKPRED_OPCODE; ap->CodeOfPred = (yamop *)(&(ap->OpcodeOfPred)); } #endif } static void decrease_ref_counter(yamop *ptr, yamop *b, yamop *e, yamop *sc) { if (ptr != FAILCODE && ptr != sc && (ptr < b || ptr > e)) { LogUpdClause *cl = ClauseCodeToLogUpdClause(ptr); cl->ClRefCount--; if (cl->ClFlags & ErasedMask && !(cl->ClRefCount) && !(cl->ClFlags & InUseMask)) { /* last ref to the clause */ Yap_ErLogUpdCl(cl); } } } static yamop * release_wcls(yamop *cop, OPCODE ecs) { if (cop->opc == ecs) { cop->u.sssllp.s3--; if (!cop->u.sssllp.s3) { UInt sz = (UInt)NEXTOP((yamop *)NULL,sssllp)+cop->u.sssllp.s1*sizeof(yamop *); LOCK(ExpandClausesListLock); #ifdef DEBUG Yap_expand_clauses_sz -= sz; Yap_ExpandClauses--; #endif if (cop->u.sssllp.p->PredFlags & LogUpdatePredFlag) { Yap_LUIndexSpace_EXT -= sz; } else { Yap_IndexSpace_EXT -= sz; } if (ExpandClausesFirst == cop) ExpandClausesFirst = cop->u.sssllp.snext; if (ExpandClausesLast == cop) { ExpandClausesLast = cop->u.sssllp.sprev; } if (cop->u.sssllp.sprev) { cop->u.sssllp.sprev->u.sssllp.snext = cop->u.sssllp.snext; } if (cop->u.sssllp.snext) { cop->u.sssllp.snext->u.sssllp.sprev = cop->u.sssllp.sprev; } UNLOCK(ExpandClausesListLock); Yap_InformOfRemoval((CODEADDR)cop); Yap_FreeCodeSpace((char *)cop); } } return FAILCODE; } static void cleanup_dangling_indices(yamop *ipc, yamop *beg, yamop *end, yamop *suspend_code) { OPCODE ecs = Yap_opcode(_expand_clauses); while (ipc) { op_numbers op = Yap_op_from_opcode(ipc->opc); /* fprintf(stderr,"op: %d %p->%p\n", op, ipc, end);*/ switch(op) { case _Ystop: /* end of clause, for now */ return; case _index_dbref: case _index_blob: case _index_long: ipc = NEXTOP(ipc,e); break; case _lock_lu: case _unlock_lu: /* locking should be done already */ ipc = NEXTOP(ipc,e); case _retry_profiled: case _count_retry: ipc = NEXTOP(ipc,p); break; case _try_clause2: case _try_clause3: case _try_clause4: ipc = NEXTOP(ipc,l); break; case _retry2: case _retry3: case _retry4: decrease_ref_counter(ipc->u.l.l, beg, end, suspend_code); ipc = NEXTOP(ipc,l); break; case _retry: case _trust: decrease_ref_counter(ipc->u.Otapl.d, beg, end, suspend_code); ipc = NEXTOP(ipc,Otapl); break; case _try_clause: case _try_me: case _retry_me: case _profiled_trust_me: case _trust_me: case _count_trust_me: ipc = NEXTOP(ipc,Otapl); break; case _try_logical: case _retry_logical: case _count_retry_logical: case _profiled_retry_logical: { yamop *oipc = ipc; decrease_ref_counter(ipc->u.OtaLl.d->ClCode, beg, end, suspend_code); ipc = ipc->u.OtaLl.n; Yap_LUIndexSpace_CP -= (UInt)NEXTOP((yamop *)NULL,OtaLl); Yap_FreeCodeSpace((ADDR)oipc); #ifdef DEBUG Yap_DirtyCps--; Yap_FreedCps++; #endif } break; case _trust_logical: case _count_trust_logical: case _profiled_trust_logical: #ifdef DEBUG Yap_DirtyCps--; Yap_FreedCps++; #endif decrease_ref_counter(ipc->u.OtILl.d->ClCode, beg, end, suspend_code); Yap_LUIndexSpace_CP -= (UInt)NEXTOP((yamop *)NULL,OtILl); Yap_FreeCodeSpace((ADDR)ipc); return; case _enter_lu_pred: { yamop *oipc = ipc; if (ipc->u.Illss.I->ClFlags & InUseMask || ipc->u.Illss.I->ClRefCount) return; #ifdef DEBUG Yap_DirtyCps+=ipc->u.Illss.s; Yap_LiveCps-=ipc->u.Illss.s; #endif ipc = ipc->u.Illss.l1; /* in case we visit again */ oipc->u.Illss.l1 = FAILCODE; oipc->u.Illss.s = 0; oipc->u.Illss.e = 0; } break; case _try_in: case _jump: case _jump_if_var: ipc->u.l.l = release_wcls(ipc->u.l.l, ecs); ipc = NEXTOP(ipc,l); break; /* instructions type xl */ case _jump_if_nonvar: ipc->u.xll.l1 = release_wcls(ipc->u.xll.l1, ecs); ipc = NEXTOP(ipc,xll); break; /* instructions type p */ case _user_switch: ipc = NEXTOP(ipc,lp); break; /* instructions type e */ case _switch_on_type: ipc->u.llll.l1 = release_wcls(ipc->u.llll.l1, ecs); ipc->u.llll.l2 = release_wcls(ipc->u.llll.l2, ecs); ipc->u.llll.l3 = release_wcls(ipc->u.llll.l3, ecs); ipc->u.llll.l4 = release_wcls(ipc->u.llll.l4, ecs); ipc = NEXTOP(ipc,llll); break; case _switch_list_nl: ipc->u.ollll.l1 = release_wcls(ipc->u.ollll.l1, ecs); ipc->u.ollll.l2 = release_wcls(ipc->u.ollll.l2, ecs); ipc->u.ollll.l3 = release_wcls(ipc->u.ollll.l3, ecs); ipc->u.ollll.l4 = release_wcls(ipc->u.ollll.l4, ecs); ipc = NEXTOP(ipc,ollll); break; case _switch_on_arg_type: ipc->u.xllll.l1 = release_wcls(ipc->u.xllll.l1, ecs); ipc->u.xllll.l2 = release_wcls(ipc->u.xllll.l2, ecs); ipc->u.xllll.l3 = release_wcls(ipc->u.xllll.l3, ecs); ipc->u.xllll.l4 = release_wcls(ipc->u.xllll.l4, ecs); ipc = NEXTOP(ipc,xllll); break; case _switch_on_sub_arg_type: ipc->u.sllll.l1 = release_wcls(ipc->u.sllll.l1, ecs); ipc->u.sllll.l2 = release_wcls(ipc->u.sllll.l2, ecs); ipc->u.sllll.l3 = release_wcls(ipc->u.sllll.l3, ecs); ipc->u.sllll.l4 = release_wcls(ipc->u.sllll.l4, ecs); ipc = NEXTOP(ipc,sllll); break; case _if_not_then: ipc = NEXTOP(ipc,clll); break; case _switch_on_func: case _if_func: case _go_on_func: case _switch_on_cons: case _if_cons: case _go_on_cons: /* make sure we don't leave dangling references to memory that is going to be removed */ ipc->u.sssl.l = NULL; ipc = NEXTOP(ipc,sssl); break; case _op_fail: return; default: Yap_Error(SYSTEM_ERROR,TermNil,"Bug in Indexing Code: opcode %d", op); return; } #if defined(YAPOR) || defined(THREADS) ipc = (yamop *)((CELL)ipc & ~1); #endif } } static void decrease_log_indices(LogUpdIndex *c, yamop *suspend_code) { /* decrease all reference counters */ yamop *beg = c->ClCode, *end, *ipc; op_numbers op; if (c->ClFlags & SwitchTableMask) { CELL *end = (CELL *)((char *)c+c->ClSize); CELL *beg = (CELL *)(c->ClCode); OPCODE ecs = Yap_opcode(_expand_clauses); while (beg < end) { yamop **x = (yamop **)(beg+1); beg += 2; *x = release_wcls(*x, ecs); } return; } op = Yap_op_from_opcode(beg->opc); end = (yamop *)((CODEADDR)c+c->ClSize); ipc = beg; cleanup_dangling_indices(ipc, beg, end, suspend_code); } static void kill_static_child_indxs(StaticIndex *indx, int in_use) { StaticIndex *cl = indx->ChildIndex; while (cl != NULL) { StaticIndex *next = cl->SiblingIndex; kill_static_child_indxs(cl, in_use); cl = next; } if (in_use) { LOCK(DeadStaticIndicesLock); indx->SiblingIndex = DeadStaticIndices; indx->ChildIndex = NULL; DeadStaticIndices = indx; UNLOCK(DeadStaticIndicesLock); } else { Yap_InformOfRemoval((CODEADDR)indx); if (indx->ClFlags & SwitchTableMask) Yap_IndexSpace_SW -= indx->ClSize; else Yap_IndexSpace_Tree -= indx->ClSize; Yap_FreeCodeSpace((char *)indx); } } static void kill_children(LogUpdIndex *c, PredEntry *ap) { LogUpdIndex *ncl; c->ClRefCount++; ncl = c->ChildIndex; /* kill children */ while (ncl) { kill_first_log_iblock(ncl, c, ap); ncl = c->ChildIndex; } c->ClRefCount--; } /* assumes c is already locked */ static void kill_off_lu_block(LogUpdIndex *c, LogUpdIndex *parent, PredEntry *ap) { /* first, make sure that I killed off all my children, some children may remain in case I have tables as children */ if (parent != NULL) { /* sat bye bye */ /* decrease refs */ parent->ClRefCount--; if (parent->ClFlags & ErasedMask && !(parent->ClFlags & InUseMask) && parent->ClRefCount == 0) { /* cool, I can erase the father too. */ if (parent->ClFlags & SwitchRootMask) { kill_off_lu_block(parent, NULL, ap); } else { kill_off_lu_block(parent, parent->ParentIndex, ap); } } } decrease_log_indices(c, (yamop *)&(ap->cs.p_code.ExpandCode)); /* remove from list */ if (c->SiblingIndex) c->SiblingIndex->PrevSiblingIndex = c->PrevSiblingIndex; if (c->PrevSiblingIndex) { c->PrevSiblingIndex->SiblingIndex = c->SiblingIndex; } else { DBErasedIList = c->SiblingIndex; } Yap_InformOfRemoval((CODEADDR)c); if (c->ClFlags & SwitchTableMask) Yap_LUIndexSpace_SW -= c->ClSize; else { Yap_LUIndexSpace_Tree -= c->ClSize; } Yap_FreeCodeSpace((char *)c); } static void kill_first_log_iblock(LogUpdIndex *c, LogUpdIndex *parent, PredEntry *ap) { /* parent is always locked, now I lock myself */ if (parent != NULL) { /* remove myself from parent */ if (c == parent->ChildIndex) { parent->ChildIndex = c->SiblingIndex; if (parent->ChildIndex) { parent->ChildIndex->PrevSiblingIndex = NULL; } } else { c->PrevSiblingIndex->SiblingIndex = c->SiblingIndex; if (c->SiblingIndex) { c->SiblingIndex->PrevSiblingIndex = c->PrevSiblingIndex; } } } else { /* I am top node */ if (ap->cs.p_code.TrueCodeOfPred == c->ClCode) { RemoveMainIndex(ap); } } decrease_log_indices(c, (yamop *)&(ap->cs.p_code.ExpandCode)); /* make sure that a child cannot remove us */ kill_children(c, ap); /* check if we are still the main index */ /* always add to erased list */ c->SiblingIndex = DBErasedIList; c->PrevSiblingIndex = NULL; if (DBErasedIList) DBErasedIList->PrevSiblingIndex = c; DBErasedIList = c; if (!((c->ClFlags & InUseMask) || c->ClRefCount)) { kill_off_lu_block(c, parent, ap); } else { if (c->ClFlags & ErasedMask) return; c->ClFlags |= ErasedMask; /* try to move up, so that we don't hold a switch table */ if (parent != NULL && parent->ClFlags & SwitchTableMask) { c->ParentIndex = parent->ParentIndex; parent->ParentIndex->ClRefCount++; parent->ClRefCount--; } } } static void kill_top_static_iblock(StaticIndex *c, PredEntry *ap) { kill_static_child_indxs(c, static_in_use(ap, TRUE)); RemoveMainIndex(ap); } void Yap_kill_iblock(ClauseUnion *blk, ClauseUnion *parent_blk, PredEntry *ap) { if (ap->PredFlags & LogUpdatePredFlag) { LogUpdIndex *c = (LogUpdIndex *)blk; if (parent_blk != NULL) { LogUpdIndex *cl = (LogUpdIndex *)parent_blk; #if MULTIPLE_STACKS /* protect against attempts at erasing */ cl->ClRefCount++; #endif kill_first_log_iblock(c, cl, ap); #if MULTIPLE_STACKS cl->ClRefCount--; #endif } else { kill_first_log_iblock(c, NULL, ap); } } else { StaticIndex *c = (StaticIndex *)blk; if (parent_blk != NULL) { StaticIndex *cl = parent_blk->si.ChildIndex; if (cl == c) { parent_blk->si.ChildIndex = c->SiblingIndex; } else { while (cl->SiblingIndex != c) { cl = cl->SiblingIndex; } cl->SiblingIndex = c->SiblingIndex; } } kill_static_child_indxs(c, static_in_use(ap, TRUE)); } } /* This predicate is supposed to be called with a lock on the current predicate */ void Yap_ErLogUpdIndex(LogUpdIndex *clau) { if (clau->ClFlags & ErasedMask) { if (!clau->ClRefCount) { decrease_log_indices(clau, (yamop *)&(clau->ClPred->cs.p_code.ExpandCode)); if (clau->ClFlags & SwitchRootMask) { kill_off_lu_block(clau, NULL, clau->ClPred); } else { kill_off_lu_block(clau, clau->ParentIndex, clau->ClPred); } } /* otherwise, nothing I can do, I have been erased already */ return; } if (clau->ClFlags & SwitchRootMask) { kill_first_log_iblock(clau, NULL, clau->ClPred); } else { #if MULTIPLE_STACKS /* protect against attempts at erasing */ clau->ClRefCount++; #endif kill_first_log_iblock(clau, clau->ParentIndex, clau->ClPred); #if MULTIPLE_STACKS /* protect against attempts at erasing */ clau->ClRefCount--; #endif } } /* Routine used when wanting to remove the indexation */ /* ap is known to already have been locked for WRITING */ static int RemoveIndexation(PredEntry *ap) { if (ap->OpcodeOfPred == INDEX_OPCODE) { return TRUE; } if (ap->PredFlags & LogUpdatePredFlag) { kill_first_log_iblock(ClauseCodeToLogUpdIndex(ap->cs.p_code.TrueCodeOfPred), NULL, ap); } else { StaticIndex *cl; cl = ClauseCodeToStaticIndex(ap->cs.p_code.TrueCodeOfPred); kill_top_static_iblock(cl, ap); } return TRUE; } int Yap_RemoveIndexation(PredEntry *ap) { return RemoveIndexation(ap); } /****************************************************************** Adding clauses ******************************************************************/ #define assertz 0 #define consult 1 #define asserta 2 /* p is already locked */ static void retract_all(PredEntry *p, int in_use) { yamop *q; q = p->cs.p_code.FirstClause; if (q != NULL) { if (p->PredFlags & LogUpdatePredFlag) { LogUpdClause *cl = ClauseCodeToLogUpdClause(q); do { LogUpdClause *ncl = cl->ClNext; Yap_ErLogUpdCl(cl); cl = ncl; } while (cl != NULL); } else if (p->PredFlags & MegaClausePredFlag) { MegaClause *cl = ClauseCodeToMegaClause(q); if (in_use || cl->ClFlags & HasBlobsMask) { LOCK(DeadMegaClausesLock); cl->ClNext = DeadMegaClauses; DeadMegaClauses = cl; UNLOCK(DeadMegaClausesLock); } else { Yap_InformOfRemoval((CODEADDR)cl); Yap_ClauseSpace -= cl->ClSize; Yap_FreeCodeSpace((char *)cl); } /* make sure this is not a MegaClause */ p->PredFlags &= ~MegaClausePredFlag; p->cs.p_code.NOfClauses = 0; } else { StaticClause *cl = ClauseCodeToStaticClause(q); while (cl) { StaticClause *ncl = cl->ClNext; if (in_use|| cl->ClFlags & HasBlobsMask) { LOCK(DeadStaticClausesLock); cl->ClNext = DeadStaticClauses; DeadStaticClauses = cl; UNLOCK(DeadStaticClausesLock); } else { Yap_InformOfRemoval((CODEADDR)cl); Yap_ClauseSpace -= cl->ClSize; Yap_FreeCodeSpace((char *)cl); } p->cs.p_code.NOfClauses--; if (!ncl) break; cl = ncl; } } } p->cs.p_code.FirstClause = NULL; p->cs.p_code.LastClause = NULL; if (p->PredFlags & (DynamicPredFlag|LogUpdatePredFlag|MultiFileFlag)) { p->OpcodeOfPred = FAIL_OPCODE; } else { p->OpcodeOfPred = UNDEF_OPCODE; } p->cs.p_code.TrueCodeOfPred = p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); #if defined(YAPOR) || defined(THREADS) if (p->PredFlags & LogUpdatePredFlag && !(p->PredFlags & ThreadLocalPredFlag) && p->ModuleOfPred != IDB_MODULE) { p->OpcodeOfPred = LOCKPRED_OPCODE; p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } #endif p->StatisticsForPred.NOfEntries = 0; p->StatisticsForPred.NOfHeadSuccesses = 0; p->StatisticsForPred.NOfRetries = 0; if (PROFILING) { p->PredFlags |= ProfiledPredFlag; } else p->PredFlags &= ~ProfiledPredFlag; if (CALL_COUNTING) { p->PredFlags |= CountPredFlag; } else p->PredFlags &= ~CountPredFlag; Yap_PutValue(AtomAbol, MkAtomTerm(AtomTrue)); } static int source_pred(PredEntry *p, yamop *q) { if (p->PredFlags & (DynamicPredFlag|LogUpdatePredFlag)) return FALSE; if (p->PredFlags & MultiFileFlag) return TRUE; if (yap_flags[SOURCE_MODE_FLAG]) { return TRUE; } return FALSE; } /* p is already locked */ static void add_first_static(PredEntry *p, yamop *cp, int spy_flag) { yamop *pt = cp; if (is_logupd(p)) { if (p == PredGoalExpansion) { PRED_GOAL_EXPANSION_ON = TRUE; Yap_InitComma(); } } else { #ifdef TABLING if (is_tabled(p)) { p->OpcodeOfPred = INDEX_OPCODE; p->cs.p_code.TrueCodeOfPred = p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } #endif /* TABLING */ } p->cs.p_code.TrueCodeOfPred = pt; p->cs.p_code.FirstClause = p->cs.p_code.LastClause = cp; p->OpcodeOfPred = pt->opc; #if defined(YAPOR) || defined(THREADS) if (p->PredFlags & LogUpdatePredFlag && !(p->PredFlags & ThreadLocalPredFlag) && p->ModuleOfPred != IDB_MODULE) { p->OpcodeOfPred = LOCKPRED_OPCODE; p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } else #endif p->CodeOfPred = pt; p->cs.p_code.NOfClauses = 1; p->StatisticsForPred.NOfEntries = 0; p->StatisticsForPred.NOfHeadSuccesses = 0; p->StatisticsForPred.NOfRetries = 0; if (PROFILING) { p->PredFlags |= ProfiledPredFlag; spy_flag = TRUE; } else { p->PredFlags &= ~ProfiledPredFlag; } if (CALL_COUNTING) { p->PredFlags |= CountPredFlag; spy_flag = TRUE; } else { p->PredFlags &= ~CountPredFlag; } if (spy_flag) { p->OpcodeOfPred = Yap_opcode(_spy_pred); p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } if (source_pred(p, cp)) { p->PredFlags |= SourcePredFlag; } } /* p is already locked */ static void add_first_dynamic(PredEntry *p, yamop *cp, int spy_flag) { yamop *ncp = ((DynamicClause *)NULL)->ClCode; DynamicClause *cl; if (p == PredGoalExpansion) { PRED_GOAL_EXPANSION_ON = TRUE; Yap_InitComma(); } p->StatisticsForPred.NOfEntries = 0; p->StatisticsForPred.NOfHeadSuccesses = 0; p->StatisticsForPred.NOfRetries = 0; if (PROFILING) { p->PredFlags |= ProfiledPredFlag; spy_flag = TRUE; } else { p->PredFlags &= ~ProfiledPredFlag; } if (CALL_COUNTING) { p->PredFlags |= CountPredFlag; spy_flag = TRUE; } else { p->PredFlags &= ~CountPredFlag; } #ifdef YAPOR p->PredFlags |= SequentialPredFlag; #endif /* YAPOR */ /* allocate starter block, containing info needed to start execution, * that is a try_mark to start the code and a fail to finish things up */ cl = (DynamicClause *) Yap_AllocCodeSpace((Int)NEXTOP(NEXTOP(NEXTOP(ncp,Otapl),e),l)); if (cl == NIL) { Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"Heap crashed against Stacks"); return; } Yap_ClauseSpace += (Int)NEXTOP(NEXTOP(NEXTOP(ncp,Otapl),e),l); /* skip the first entry, this contains the back link and will always be empty for this entry */ ncp = (yamop *)(((CELL *)ncp)+1); /* next we have the flags. For this block mainly say whether we are * being spied */ cl->ClFlags = DynamicMask; ncp = cl->ClCode; INIT_LOCK(cl->ClLock); INIT_CLREF_COUNT(cl); /* next, set the first instruction to execute in the dyamic * predicate */ if (spy_flag) p->OpcodeOfPred = ncp->opc = Yap_opcode(_spy_or_trymark); else p->OpcodeOfPred = ncp->opc = Yap_opcode(_try_and_mark); ncp->u.Otapl.s = p->ArityOfPE; ncp->u.Otapl.p = p; ncp->u.Otapl.d = cp; /* This is the point we enter the code */ p->cs.p_code.TrueCodeOfPred = p->CodeOfPred = ncp; p->cs.p_code.NOfClauses = 1; #if defined(YAPOR) || defined(THREADS) if (p->PredFlags & LogUpdatePredFlag && !(p->PredFlags & ThreadLocalPredFlag) && p->ModuleOfPred != IDB_MODULE) { p->OpcodeOfPred = LOCKPRED_OPCODE; p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } #endif /* set the first clause to have a retry and mark which will * backtrack to the previous block */ if (p->PredFlags & ProfiledPredFlag) cp->opc = Yap_opcode(_profiled_retry_and_mark); else if (p->PredFlags & CountPredFlag) cp->opc = Yap_opcode(_count_retry_and_mark); else cp->opc = Yap_opcode(_retry_and_mark); cp->u.Otapl.s = p->ArityOfPE; cp->u.Otapl.p = p; cp->u.Otapl.d = ncp; /* also, keep a backpointer for the days you delete the clause */ ClauseCodeToDynamicClause(cp)->ClPrevious = ncp; /* Don't forget to say who is the only clause for the predicate so far */ p->cs.p_code.LastClause = p->cs.p_code.FirstClause = cp; /* we're only missing what to do when we actually exit the procedure */ ncp = NEXTOP(ncp,Otapl); /* and the last instruction to execute to exit the predicate, note the retry is pointing to this pseudo clause */ ncp->opc = Yap_opcode(_trust_fail); /* we're only missing what to do when we actually exit the procedure */ /* and close the code */ ncp = NEXTOP(ncp,e); ncp->opc = Yap_opcode(_Ystop); ncp->u.l.l = cl->ClCode; } /* p is already locked */ static void asserta_stat_clause(PredEntry *p, yamop *q, int spy_flag) { StaticClause *cl = ClauseCodeToStaticClause(q); p->cs.p_code.NOfClauses++; if (is_logupd(p)) { LogUpdClause *clp = ClauseCodeToLogUpdClause(p->cs.p_code.FirstClause), *clq = ClauseCodeToLogUpdClause(q); clq->ClPrev = NULL; clq->ClNext = clp; clp->ClPrev = clq; p->cs.p_code.FirstClause = q; if (p->PredFlags & (SpiedPredFlag|CountPredFlag|ProfiledPredFlag)) { p->OpcodeOfPred = Yap_opcode(_spy_pred); p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } else if (!(p->PredFlags & IndexedPredFlag)) { p->OpcodeOfPred = INDEX_OPCODE; p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } #if defined(YAPOR) || defined(THREADS) if (p->ModuleOfPred != IDB_MODULE && !(p->PredFlags & ThreadLocalPredFlag)) { p->OpcodeOfPred = LOCKPRED_OPCODE; p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } #endif return; } cl->ClNext = ClauseCodeToStaticClause(p->cs.p_code.FirstClause); p->cs.p_code.FirstClause = q; p->cs.p_code.TrueCodeOfPred = q; if (p->PredFlags & (SpiedPredFlag|CountPredFlag|ProfiledPredFlag)) { p->OpcodeOfPred = Yap_opcode(_spy_pred); p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } else if (!(p->PredFlags & IndexedPredFlag)) { p->OpcodeOfPred = INDEX_OPCODE; p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } p->cs.p_code.LastClause->u.Otapl.d = q; } /* p is already locked */ static void asserta_dynam_clause(PredEntry *p, yamop *cp) { yamop *q; DynamicClause *cl = ClauseCodeToDynamicClause(cp); q = cp; LOCK(ClauseCodeToDynamicClause(p->cs.p_code.FirstClause)->ClLock); /* also, keep backpointers for the days we'll delete all the clause */ ClauseCodeToDynamicClause(p->cs.p_code.FirstClause)->ClPrevious = q; cl->ClPrevious = (yamop *)(p->CodeOfPred); cl->ClFlags |= DynamicMask; UNLOCK(ClauseCodeToDynamicClause(p->cs.p_code.FirstClause)->ClLock); q->u.Otapl.d = p->cs.p_code.FirstClause; q->u.Otapl.s = p->ArityOfPE; q->u.Otapl.p = p; if (p->PredFlags & ProfiledPredFlag) cp->opc = Yap_opcode(_profiled_retry_and_mark); else if (p->PredFlags & CountPredFlag) cp->opc = Yap_opcode(_count_retry_and_mark); else cp->opc = Yap_opcode(_retry_and_mark); cp->u.Otapl.s = p->ArityOfPE; cp->u.Otapl.p = p; p->cs.p_code.FirstClause = cp; q = p->CodeOfPred; q->u.Otapl.d = cp; q->u.Otapl.s = p->ArityOfPE; q->u.Otapl.p = p; } /* p is already locked */ static void assertz_stat_clause(PredEntry *p, yamop *cp, int spy_flag) { yamop *pt; p->cs.p_code.NOfClauses++; pt = p->cs.p_code.LastClause; if (is_logupd(p)) { LogUpdClause *clp = ClauseCodeToLogUpdClause(cp), *clq = ClauseCodeToLogUpdClause(pt); clq->ClNext = clp; clp->ClPrev = clq; clp->ClNext = NULL; p->cs.p_code.LastClause = cp; if (!(p->PredFlags & IndexedPredFlag)) { p->OpcodeOfPred = INDEX_OPCODE; p->cs.p_code.TrueCodeOfPred = p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } #if defined(YAPOR) || defined(THREADS) if (p->ModuleOfPred != IDB_MODULE && !(p->PredFlags & ThreadLocalPredFlag)) { p->OpcodeOfPred = LOCKPRED_OPCODE; p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } #endif if (p->PredFlags & (SpiedPredFlag|CountPredFlag|ProfiledPredFlag)) { p->OpcodeOfPred = Yap_opcode(_spy_pred); p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } return; } else { StaticClause *cl = ClauseCodeToStaticClause(pt); cl->ClNext = ClauseCodeToStaticClause(cp); } if (p->cs.p_code.FirstClause == p->cs.p_code.LastClause) { if (!(p->PredFlags & (SpiedPredFlag|CountPredFlag|ProfiledPredFlag))) { p->OpcodeOfPred = INDEX_OPCODE; p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } } p->cs.p_code.LastClause = cp; } /* p is already locked */ static void assertz_dynam_clause(PredEntry *p, yamop *cp) { yamop *q; DynamicClause *cl = ClauseCodeToDynamicClause(cp); q = p->cs.p_code.LastClause; LOCK(ClauseCodeToDynamicClause(q)->ClLock); q->u.Otapl.d = cp; p->cs.p_code.LastClause = cp; /* also, keep backpointers for the days we'll delete all the clause */ cl->ClPrevious = q; cl->ClFlags |= DynamicMask; UNLOCK(ClauseCodeToDynamicClause(q)->ClLock); q = (yamop *)cp; if (p->PredFlags & ProfiledPredFlag) q->opc = Yap_opcode(_profiled_retry_and_mark); else if (p->PredFlags & CountPredFlag) q->opc = Yap_opcode(_count_retry_and_mark); else q->opc = Yap_opcode(_retry_and_mark); q->u.Otapl.d = p->CodeOfPred; q->u.Otapl.s = p->ArityOfPE; q->u.Otapl.p = p; p->cs.p_code.NOfClauses++; } void Yap_AssertzClause(PredEntry *p, yamop *cp) { if (p->PredFlags & DynamicPredFlag) { if (p->cs.p_code.FirstClause == NULL) { add_first_dynamic(p, cp, FALSE); } else { assertz_dynam_clause(p, cp); } } else { if (p->cs.p_code.FirstClause == NULL) { add_first_static(p, cp, FALSE); } else { assertz_stat_clause(p, cp, FALSE); } } } static void expand_consult( void ) { CACHE_REGS consult_obj *new_cl, *new_cs; UInt OldConsultCapacity = LOCAL_ConsultCapacity; /* now double consult capacity */ LOCAL_ConsultCapacity += InitialConsultCapacity; /* I assume it always works ;-) */ while ((new_cl = (consult_obj *)Yap_AllocCodeSpace(sizeof(consult_obj)*LOCAL_ConsultCapacity)) == NULL) { if (!Yap_growheap(FALSE, sizeof(consult_obj)*LOCAL_ConsultCapacity, NULL)) { Yap_Error(OUT_OF_HEAP_ERROR,TermNil,LOCAL_ErrorMessage); return; } } new_cs = new_cl + InitialConsultCapacity; /* start copying */ memcpy((void *)new_cs, (void *)LOCAL_ConsultLow, OldConsultCapacity*sizeof(consult_obj)); /* copying done, release old space */ Yap_FreeCodeSpace((char *)LOCAL_ConsultLow); /* next, set up pointers correctly */ new_cs += (LOCAL_ConsultSp-LOCAL_ConsultLow); /* put LOCAL_ConsultBase at same offset as before move */ LOCAL_ConsultBase = LOCAL_ConsultBase+(new_cs-LOCAL_ConsultSp); /* new consult pointer */ LOCAL_ConsultSp = new_cs; /* new end of memory */ LOCAL_ConsultLow = new_cl; } /* p was already locked */ static int not_was_reconsulted(PredEntry *p, Term t, int mode) { CACHE_REGS register consult_obj *fp; Prop p0 = AbsProp((PropEntry *)p); if (p == LOCAL_LastAssertedPred) return FALSE; LOCAL_LastAssertedPred = p; if (!LOCAL_ConsultSp) { InitConsultStack(); } if (p->cs.p_code.NOfClauses) { for (fp = LOCAL_ConsultSp; fp < LOCAL_ConsultBase; ++fp) if (fp->p == p0) break; } else { fp = LOCAL_ConsultBase; } if (fp != LOCAL_ConsultBase) return FALSE; if (mode) { if (LOCAL_ConsultSp == LOCAL_ConsultLow+1) { expand_consult(); } --LOCAL_ConsultSp; LOCAL_ConsultSp->p = p0; if (LOCAL_ConsultBase[1].mode && !(p->PredFlags & MultiFileFlag)) /* we are in reconsult mode */ { retract_all(p, static_in_use(p,TRUE)); } p->src.OwnerFile = YapConsultingFile( PASS_REGS1 ); } return TRUE; /* careful */ } static void addcl_permission_error(AtomEntry *ap, Int Arity, int in_use) { CACHE_REGS Term t, ti[2]; ti[0] = MkAtomTerm(AbsAtom(ap)); ti[1] = MkIntegerTerm(Arity); t = Yap_MkApplTerm(FunctorSlash, 2, ti); LOCAL_ErrorMessage = LOCAL_ErrorSay; LOCAL_Error_Term = t; LOCAL_Error_TYPE = PERMISSION_ERROR_MODIFY_STATIC_PROCEDURE; if (in_use) { if (Arity == 0) sprintf(LOCAL_ErrorMessage, "static predicate %s is in use", ap->StrOfAE); else sprintf(LOCAL_ErrorMessage, "static predicate %s/" Int_FORMAT " is in use", ap->StrOfAE, Arity); } else { if (Arity == 0) sprintf(LOCAL_ErrorMessage, "system predicate %s", ap->StrOfAE); else sprintf(LOCAL_ErrorMessage, "system predicate %s/" Int_FORMAT, ap->StrOfAE, Arity); } } static int is_fact(Term t) { Term a1; if (IsAtomTerm(t)) return TRUE; if (FunctorOfTerm(t) != FunctorAssert) return TRUE; a1 = ArgOfTerm(2, t); if (a1 == MkAtomTerm(AtomTrue)) return TRUE; return FALSE; } static void mark_preds_with_this_func(Functor f, Prop p0) { PredEntry *pe = RepPredProp(p0); UInt i; pe->PredFlags |= GoalExPredFlag; for (i = 0; i < PredHashTableSize; i++) { PredEntry *p = PredHash[i]; while (p) { Prop nextp = p->NextOfPE; if (p->FunctorOfPred == f) p->PredFlags |= GoalExPredFlag; p = RepPredProp(nextp); } } } static int addclause(Term t, yamop *cp, int mode, Term mod, Term *t4ref) /* * mode 0 assertz 1 consult 2 asserta */ { CACHE_REGS PredEntry *p; int spy_flag = FALSE; Atom at; UInt Arity; CELL pflags; Term tf; if (IsApplTerm(t) && FunctorOfTerm(t) == FunctorAssert) tf = ArgOfTerm(1, t); else tf = t; if (IsAtomTerm(tf)) { at = AtomOfTerm(tf); p = RepPredProp(PredPropByAtom(at, mod)); Arity = 0; } else { Functor f = FunctorOfTerm(tf); Arity = ArityOfFunctor(f); at = NameOfFunctor(f); p = RepPredProp(PredPropByFunc(f, mod)); } Yap_PutValue(AtomAbol, TermNil); PELOCK(20,p); pflags = p->PredFlags; /* we are redefining a prolog module predicate */ if ((pflags & (UserCPredFlag|CArgsPredFlag|NumberDBPredFlag|AtomDBPredFlag|TestPredFlag|AsmPredFlag|CPredFlag|BinaryPredFlag)) || (p->ModuleOfPred == PROLOG_MODULE && mod != TermProlog && mod) ) { addcl_permission_error(RepAtom(at), Arity, FALSE); UNLOCKPE(30,p); return TermNil; } /* we are redefining a prolog module predicate */ if (pflags & MegaClausePredFlag) { split_megaclause(p); } /* The only problem we have now is when we need to throw away Indexing blocks */ if (pflags & IndexedPredFlag) { Yap_AddClauseToIndex(p, cp, mode == asserta); } if (pflags & (SpiedPredFlag|CountPredFlag|ProfiledPredFlag)) spy_flag = TRUE; if (p == PredGoalExpansion) { Term tg = ArgOfTerm(1, tf); Term tm = ArgOfTerm(2, tf); if (IsVarTerm(tg) || IsVarTerm(tm)) { if (!IsVarTerm(tg)) { /* this is the complicated case, first I need to inform predicates for this functor */ PRED_GOAL_EXPANSION_FUNC = TRUE; if (IsAtomTerm(tg)) { AtomEntry *ae = RepAtom(AtomOfTerm(tg)); Prop p0 = ae->PropsOfAE; int found = FALSE; while (p0) { PredEntry *pe = RepPredProp(p0); if (pe->KindOfPE == PEProp) { pe->PredFlags |= GoalExPredFlag; found = TRUE; } p0 = pe->NextOfPE; } if (!found) { PredEntry *npe = RepPredProp(PredPropByAtom(AtomOfTerm(tg),IDB_MODULE)); npe->PredFlags |= GoalExPredFlag; } } else if (IsApplTerm(tg)) { FunctorEntry *fe = (FunctorEntry *)FunctorOfTerm(tg); Prop p0; p0 = fe->PropsOfFE; if (p0) { mark_preds_with_this_func(FunctorOfTerm(tg), p0); } else { Term mod = CurrentModule; PredEntry *npe; if (CurrentModule == PROLOG_MODULE) mod = IDB_MODULE; npe = RepPredProp(PredPropByFunc(fe,mod)); npe->PredFlags |= GoalExPredFlag; } } } else { PRED_GOAL_EXPANSION_ALL = TRUE; } } else { if (IsAtomTerm(tm)) { if (IsAtomTerm(tg)) { PredEntry *p = RepPredProp(PredPropByAtom(AtomOfTerm(tg), tm)); p->PredFlags |= GoalExPredFlag; } else if (IsApplTerm(tg)) { PredEntry *p = RepPredProp(PredPropByFunc(FunctorOfTerm(tg), tm)); p->PredFlags |= GoalExPredFlag; } } } } if (mode == consult) not_was_reconsulted(p, t, TRUE); /* always check if we have a valid error first */ if (LOCAL_ErrorMessage && LOCAL_Error_TYPE == PERMISSION_ERROR_MODIFY_STATIC_PROCEDURE) { UNLOCKPE(31,p); return TermNil; } if (pflags & UDIPredFlag) { Yap_new_udi_clause(p, cp, t); } if (!is_dynamic(p)) { if (pflags & LogUpdatePredFlag) { LogUpdClause *clp = ClauseCodeToLogUpdClause(cp); clp->ClFlags |= LogUpdMask; if (is_fact(t)) { clp->ClFlags |= FactMask; clp->ClSource = NULL; } } else { StaticClause *clp = ClauseCodeToStaticClause(cp); clp->ClFlags |= StaticMask; if (is_fact(t) && !(p->PredFlags & TabledPredFlag)) { clp->ClFlags |= FactMask; clp->usc.ClPred = p; } } if (compile_mode) p->PredFlags = p->PredFlags | CompiledPredFlag; else p->PredFlags = p->PredFlags | CompiledPredFlag; } if (p->cs.p_code.FirstClause == NULL) { if (!(pflags & DynamicPredFlag)) { add_first_static(p, cp, spy_flag); /* make sure we have a place to jump to */ if (p->OpcodeOfPred == UNDEF_OPCODE || p->OpcodeOfPred == FAIL_OPCODE) { /* log updates */ p->CodeOfPred = p->cs.p_code.TrueCodeOfPred; p->OpcodeOfPred = ((yamop *)(p->CodeOfPred))->opc; } #if defined(YAPOR) || defined(THREADS) if (p->PredFlags & LogUpdatePredFlag && !(p->PredFlags & ThreadLocalPredFlag) && p->ModuleOfPred != IDB_MODULE) { p->OpcodeOfPred = LOCKPRED_OPCODE; p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } #endif } else { add_first_dynamic(p, cp, spy_flag); } } else if (mode == asserta) { if (pflags & DynamicPredFlag) asserta_dynam_clause(p, cp); else asserta_stat_clause(p, cp, spy_flag); } else if (pflags & DynamicPredFlag) assertz_dynam_clause(p, cp); else { assertz_stat_clause(p, cp, spy_flag); if (p->OpcodeOfPred != INDEX_OPCODE && p->OpcodeOfPred != Yap_opcode(_spy_pred)) { p->CodeOfPred = p->cs.p_code.TrueCodeOfPred; p->OpcodeOfPred = ((yamop *)(p->CodeOfPred))->opc; } #if defined(YAPOR) || defined(THREADS) if (p->PredFlags & LogUpdatePredFlag && !(p->PredFlags & ThreadLocalPredFlag) && p->ModuleOfPred != IDB_MODULE) { p->OpcodeOfPred = LOCKPRED_OPCODE; p->CodeOfPred = (yamop *)(&(p->OpcodeOfPred)); } #endif } UNLOCKPE(32,p); if (pflags & LogUpdatePredFlag) { LogUpdClause *cl = (LogUpdClause *)ClauseCodeToLogUpdClause(cp); tf = MkDBRefTerm((DBRef)cl); #if MULTIPLE_STACKS TRAIL_CLREF(cl); /* So that fail will erase it */ INC_CLREF_COUNT(cl); #else if (!(cl->ClFlags & InUseMask)) { cl->ClFlags |= InUseMask; TRAIL_CLREF(cl); /* So that fail will erase it */ } #endif } else { tf = Yap_MkStaticRefTerm(ClauseCodeToStaticClause(cp)); } if (*t4ref != TermNil) { if (!Yap_unify(*t4ref,tf)) { return FALSE; } } if (pflags & MultiFileFlag) { /* add Info on new clause for multifile predicates to the DB */ Term t[5], tn; t[0] = MkAtomTerm(YapConsultingFile( PASS_REGS1 )); t[1] = MkAtomTerm(at); t[2] = MkIntegerTerm(Arity); t[3] = mod; t[4] = tf; tn = Yap_MkApplTerm(FunctorMultiFileClause,5,t); Yap_Recordz(AtomMultiFile,tn); } return TRUE; } int Yap_addclause(Term t, yamop *cp, int mode, Term mod, Term *t4ref) { return addclause(t, cp, mode, mod, t4ref); } void Yap_EraseMegaClause(yamop *cl,PredEntry *ap) { /* just make it fail */ cl->opc = Yap_opcode(_op_fail); } void Yap_EraseStaticClause(StaticClause *cl, Term mod) { PredEntry *ap; /* ok, first I need to find out the parent predicate */ if (cl->ClFlags & FactMask) { ap = cl->usc.ClPred; } else { Term t = ArgOfTerm(1,cl->usc.ClSource->Entry); if (IsAtomTerm(t)) { Atom at = AtomOfTerm(t); ap = RepPredProp(Yap_GetPredPropByAtom(at, mod)); } else { Functor fun = FunctorOfTerm(t); ap = RepPredProp(Yap_GetPredPropByFunc(fun, mod)); } } if (ap->PredFlags & MegaClausePredFlag) { split_megaclause(ap); } if (ap->PredFlags & IndexedPredFlag) RemoveIndexation(ap); ap->cs.p_code.NOfClauses--; if (ap->cs.p_code.FirstClause == cl->ClCode) { /* got rid of first clause */ if (ap->cs.p_code.LastClause == cl->ClCode) { /* got rid of all clauses */ ap->cs.p_code.LastClause = ap->cs.p_code.FirstClause = NULL; ap->OpcodeOfPred = UNDEF_OPCODE; ap->cs.p_code.TrueCodeOfPred = (yamop *)(&(ap->OpcodeOfPred)); } else { yamop *ncl = cl->ClNext->ClCode; ap->cs.p_code.FirstClause = ncl; ap->cs.p_code.TrueCodeOfPred = ncl; ap->OpcodeOfPred = ncl->opc; } } else { StaticClause *pcl = ClauseCodeToStaticClause(ap->cs.p_code.FirstClause), *ocl = NULL; while (pcl != cl) { ocl = pcl; pcl = pcl->ClNext; } ocl->ClNext = cl->ClNext; if (cl->ClCode == ap->cs.p_code.LastClause) { ap->cs.p_code.LastClause = ocl->ClCode; } } if (ap->cs.p_code.NOfClauses == 1) { ap->cs.p_code.TrueCodeOfPred = ap->cs.p_code.FirstClause; ap->OpcodeOfPred = ap->cs.p_code.TrueCodeOfPred->opc; } if (cl->ClFlags & HasBlobsMask || static_in_use(ap,TRUE)) { LOCK(DeadStaticClausesLock); cl->ClNext = DeadStaticClauses; DeadStaticClauses = cl; UNLOCK(DeadStaticClausesLock); } else { Yap_InformOfRemoval((CODEADDR)cl); Yap_ClauseSpace -= cl->ClSize; Yap_FreeCodeSpace((char *)cl); } if (ap->cs.p_code.NOfClauses == 0) { ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred; } else if (ap->cs.p_code.NOfClauses > 1) { ap->OpcodeOfPred = INDEX_OPCODE; ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred = (yamop *)(&(ap->OpcodeOfPred)); } else if (ap->PredFlags & (SpiedPredFlag|CountPredFlag|ProfiledPredFlag)) { ap->OpcodeOfPred = Yap_opcode(_spy_pred); ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred = (yamop *)(&(ap->OpcodeOfPred)); } else { ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred; } #if defined(YAPOR) || defined(THREADS) if (ap->PredFlags & LogUpdatePredFlag && !(ap->PredFlags & ThreadLocalPredFlag) && ap->ModuleOfPred != IDB_MODULE) { ap->OpcodeOfPred = LOCKPRED_OPCODE; ap->CodeOfPred = (yamop *)(&(ap->OpcodeOfPred)); } #endif } void Yap_add_logupd_clause(PredEntry *pe, LogUpdClause *cl, int mode) { yamop *cp = cl->ClCode; if (pe->PredFlags & IndexedPredFlag) { Yap_AddClauseToIndex(pe, cp, mode == asserta); } if (pe->cs.p_code.FirstClause == NULL) { add_first_static(pe, cp, FALSE); /* make sure we have a place to jump to */ if (pe->OpcodeOfPred == UNDEF_OPCODE || pe->OpcodeOfPred == FAIL_OPCODE) { /* log updates */ #if defined(YAPOR) || defined(THREADS) if (pe->PredFlags & LogUpdatePredFlag && !(pe->PredFlags & ThreadLocalPredFlag) && pe->ModuleOfPred != IDB_MODULE) { pe->OpcodeOfPred = LOCKPRED_OPCODE; pe->CodeOfPred = (yamop *)(&(pe->OpcodeOfPred)); } else { #endif pe->CodeOfPred = pe->cs.p_code.TrueCodeOfPred; pe->OpcodeOfPred = ((yamop *)(pe->CodeOfPred))->opc; #if defined(YAPOR) || defined(THREADS) } #endif } } else if (mode == asserta) { asserta_stat_clause(pe, cp, FALSE); } else { assertz_stat_clause(pe, cp, FALSE); } } static Int p_compile( USES_REGS1 ) { /* '$compile'(+C,+Flags, Mod) */ Term t = Deref(ARG1); Term t1 = Deref(ARG2); Term mod = Deref(ARG4); Term tn = TermNil; yamop *codeadr; if (IsVarTerm(t1) || !IsIntTerm(t1)) return (FALSE); if (IsVarTerm(mod) || !IsAtomTerm(mod)) return (FALSE); YAPEnterCriticalSection(); codeadr = Yap_cclause(t, 4, mod, Deref(ARG3)); /* vsc: give the number of arguments to cclause in case there is overflow */ t = Deref(ARG1); /* just in case there was an heap overflow */ if (!LOCAL_ErrorMessage) addclause(t, codeadr, (int) (IntOfTerm(t1) & 3), mod, &tn); YAPLeaveCriticalSection(); if (LOCAL_ErrorMessage) { if (IntOfTerm(t1) & 4) { Yap_Error(LOCAL_Error_TYPE, LOCAL_Error_Term, "in line %d, %s", Yap_FirstLineInParse(), LOCAL_ErrorMessage); } else { Yap_Error(LOCAL_Error_TYPE, LOCAL_Error_Term, LOCAL_ErrorMessage); } return FALSE; } return TRUE; } static Int p_compile_dynamic( USES_REGS1 ) { /* '$compile_dynamic'(+C,+Flags,Mod,-Ref) */ Term t = Deref(ARG1); Term t1 = Deref(ARG2); Term mod = Deref(ARG4); yamop *code_adr; int old_optimize, mode; if (IsVarTerm(t1) || !IsAtomicTerm(t1)) return FALSE; if (IsVarTerm(mod) || !IsAtomTerm(mod)) return FALSE; if (IsAtomTerm(t1)) { if (RepAtom(AtomOfTerm(t1))->StrOfAE[0] == 'f') mode = asserta; else mode = assertz; } else mode = IntegerOfTerm(t1); /* separate assert in current file from reconsult if (mode == assertz && LOCAL_consult_level && mod == CurrentModule) mode = consult; */ old_optimize = optimizer_on; optimizer_on = FALSE; YAPEnterCriticalSection(); code_adr = Yap_cclause(t, 5, mod, Deref(ARG3)); /* vsc: give the number of arguments to cclause() in case there is a overflow */ t = Deref(ARG1); /* just in case there was an heap overflow */ if (!LOCAL_ErrorMessage) { optimizer_on = old_optimize; addclause(t, code_adr, mode , mod, &ARG5); } if (LOCAL_ErrorMessage) { if (!LOCAL_Error_Term) LOCAL_Error_Term = TermNil; Yap_Error(LOCAL_Error_TYPE, LOCAL_Error_Term, LOCAL_ErrorMessage); YAPLeaveCriticalSection(); return FALSE; } YAPLeaveCriticalSection(); return TRUE; } static Atom YapConsultingFile ( USES_REGS1 ) { if (LOCAL_consult_level == 0) { return(AtomUser); } else { return(Yap_LookupAtom(LOCAL_ConsultBase[2].filename)); } } Atom Yap_ConsultingFile ( void ) { CACHE_REGS return YapConsultingFile( PASS_REGS1 ); } /* consult file *file*, *mode* may be one of either consult or reconsult */ static void init_consult(int mode, char *file) { CACHE_REGS if (!LOCAL_ConsultSp) { InitConsultStack(); } LOCAL_ConsultSp--; LOCAL_ConsultSp->filename = file; LOCAL_ConsultSp--; LOCAL_ConsultSp->mode = mode; LOCAL_ConsultSp--; LOCAL_ConsultSp->c = (LOCAL_ConsultBase-LOCAL_ConsultSp); LOCAL_ConsultBase = LOCAL_ConsultSp; #if !defined(YAPOR) && !defined(YAPOR_SBA) /* if (LOCAL_consult_level == 0) do_toggle_static_predicates_in_use(TRUE); */ #endif LOCAL_consult_level++; LOCAL_LastAssertedPred = NULL; } void Yap_init_consult(int mode, char *file) { init_consult(mode,file); } static Int p_startconsult( USES_REGS1 ) { /* '$start_consult'(+Mode) */ Term t; char *smode = RepAtom(AtomOfTerm(Deref(ARG1)))->StrOfAE; int mode; mode = strcmp("consult",smode); init_consult(mode, RepAtom(AtomOfTerm(Deref(ARG2)))->StrOfAE); t = MkIntTerm(LOCAL_consult_level); return (Yap_unify_constant(ARG3, t)); } static Int p_showconslultlev( USES_REGS1 ) { Term t; t = MkIntTerm(LOCAL_consult_level); return (Yap_unify_constant(ARG1, t)); } static void end_consult( USES_REGS1 ) { LOCAL_ConsultSp = LOCAL_ConsultBase; LOCAL_ConsultBase = LOCAL_ConsultSp+LOCAL_ConsultSp->c; LOCAL_ConsultSp += 3; LOCAL_consult_level--; LOCAL_LastAssertedPred = NULL; #if !defined(YAPOR) && !defined(YAPOR_SBA) /* if (LOCAL_consult_level == 0) do_toggle_static_predicates_in_use(FALSE);*/ #endif } void Yap_end_consult( void ) { CACHE_REGS end_consult( PASS_REGS1 ); } static Int p_endconsult( USES_REGS1 ) { /* '$end_consult' */ end_consult( PASS_REGS1 ); return (TRUE); } static void purge_clauses(PredEntry *pred) { if (pred->cs.p_code.NOfClauses) { if (pred->PredFlags & IndexedPredFlag) RemoveIndexation(pred); Yap_PutValue(AtomAbol, MkAtomTerm(AtomTrue)); retract_all(pred, static_in_use(pred,TRUE)); } pred->src.OwnerFile = AtomNil; } void Yap_Abolish(PredEntry *pred) { purge_clauses(pred); } static Int p_purge_clauses( USES_REGS1 ) { /* '$purge_clauses'(+Func) */ PredEntry *pred; Term t = Deref(ARG1); Term mod = Deref(ARG2); Yap_PutValue(AtomAbol, MkAtomTerm(AtomNil)); if (IsVarTerm(t)) return FALSE; if (IsVarTerm(mod) || !IsAtomTerm(mod)) { return FALSE; } if (IsAtomTerm(t)) { Atom at = AtomOfTerm(t); pred = RepPredProp(PredPropByAtom(at, mod)); } else if (IsApplTerm(t)) { Functor fun = FunctorOfTerm(t); pred = RepPredProp(PredPropByFunc(fun, mod)); } else return (FALSE); PELOCK(21,pred); if (pred->PredFlags & StandardPredFlag) { UNLOCKPE(33,pred); Yap_Error(PERMISSION_ERROR_MODIFY_STATIC_PROCEDURE, t, "assert/1"); return (FALSE); } purge_clauses(pred); UNLOCKPE(34,pred); return (TRUE); } /****************************************************************** MANAGING SPY-POINTS ******************************************************************/ static Int p_setspy( USES_REGS1 ) { /* '$set_spy'(+Fun,+M) */ Atom at; PredEntry *pred; CELL fg; Term t, mod; at = AtomSpy; pred = RepPredProp(PredPropByFunc(Yap_MkFunctor(at, 1),0)); SpyCode = pred; t = Deref(ARG1); mod = Deref(ARG2); if (IsVarTerm(mod) || !IsAtomTerm(mod)) return (FALSE); if (IsVarTerm(t)) return (FALSE); if (IsAtomTerm(t)) { Atom at = AtomOfTerm(t); pred = RepPredProp(Yap_PredPropByAtomNonThreadLocal(at, mod)); } else if (IsApplTerm(t)) { Functor fun = FunctorOfTerm(t); pred = RepPredProp(Yap_PredPropByFunctorNonThreadLocal(fun, mod)); } else { return (FALSE); } PELOCK(22,pred); restart_spy: if (pred->PredFlags & (CPredFlag | SafePredFlag)) { UNLOCKPE(35,pred); return FALSE; } if (pred->OpcodeOfPred == UNDEF_OPCODE || pred->OpcodeOfPred == FAIL_OPCODE) { UNLOCKPE(36,pred); return FALSE; } if (pred->OpcodeOfPred == INDEX_OPCODE) { int i = 0; for (i = 0; i < pred->ArityOfPE; i++) { XREGS[i+1] = MkVarTerm(); } IPred(pred, 0, CP); goto restart_spy; } fg = pred->PredFlags; if (fg & DynamicPredFlag) { pred->OpcodeOfPred = ((yamop *)(pred->CodeOfPred))->opc = Yap_opcode(_spy_or_trymark); } else { pred->OpcodeOfPred = Yap_opcode(_spy_pred); pred->CodeOfPred = (yamop *)(&(pred->OpcodeOfPred)); } pred->PredFlags |= SpiedPredFlag; UNLOCKPE(37,pred); return TRUE; } static Int p_rmspy( USES_REGS1 ) { /* '$rm_spy'(+T,+Mod) */ Atom at; PredEntry *pred; Term t; Term mod; t = Deref(ARG1); mod = Deref(ARG2); if (IsVarTerm(mod) || !IsAtomTerm(mod)) return (FALSE); if (IsVarTerm(t)) return (FALSE); if (IsAtomTerm(t)) { at = AtomOfTerm(t); pred = RepPredProp(Yap_PredPropByAtomNonThreadLocal(at, mod)); } else if (IsApplTerm(t)) { Functor fun = FunctorOfTerm(t); pred = RepPredProp(Yap_PredPropByFunctorNonThreadLocal(fun, mod)); } else return FALSE; PELOCK(23,pred); if (!(pred->PredFlags & SpiedPredFlag)) { UNLOCKPE(38,pred); return FALSE; } #if THREADS if (!(pred->PredFlags & ThreadLocalPredFlag)) { pred->OpcodeOfPred = Yap_opcode(_thread_local); pred->PredFlags ^= SpiedPredFlag; UNLOCKPE(39,pred); return TRUE; } #endif if (!(pred->PredFlags & (CountPredFlag|ProfiledPredFlag))) { if (!(pred->PredFlags & DynamicPredFlag)) { #if defined(YAPOR) || defined(THREADS) if (pred->PredFlags & LogUpdatePredFlag && !(pred->PredFlags & ThreadLocalPredFlag) && pred->ModuleOfPred != IDB_MODULE) { pred->OpcodeOfPred = LOCKPRED_OPCODE; pred->CodeOfPred = (yamop *)(&(pred->OpcodeOfPred)); } else { #endif pred->CodeOfPred = pred->cs.p_code.TrueCodeOfPred; pred->OpcodeOfPred = pred->CodeOfPred->opc; #if defined(YAPOR) || defined(THREADS) } #endif } else if (pred->OpcodeOfPred == Yap_opcode(_spy_or_trymark)) { pred->OpcodeOfPred = Yap_opcode(_try_and_mark); } else { UNLOCKPE(39,pred); return FALSE; } } pred->PredFlags ^= SpiedPredFlag; UNLOCKPE(40,pred); return (TRUE); } /****************************************************************** INFO ABOUT PREDICATES ******************************************************************/ static Int p_number_of_clauses( USES_REGS1 ) { /* '$number_of_clauses'(Predicate,M,N) */ Term t = Deref(ARG1); Term mod = Deref(ARG2); int ncl = 0; Prop pe; if (IsVarTerm(mod) || !IsAtomTerm(mod)) { return(FALSE); } if (IsAtomTerm(t)) { Atom a = AtomOfTerm(t); pe = Yap_GetPredPropByAtom(a, mod); } else if (IsApplTerm(t)) { register Functor f = FunctorOfTerm(t); pe = Yap_GetPredPropByFunc(f, mod); } else { return (FALSE); } if (EndOfPAEntr(pe)) return FALSE; PELOCK(24,RepPredProp(pe)); ncl = RepPredProp(pe)->cs.p_code.NOfClauses; UNLOCKPE(41,RepPredProp(pe)); return (Yap_unify_constant(ARG3, MkIntegerTerm(ncl))); } static Int p_in_use( USES_REGS1 ) { /* '$in_use'(+P,+Mod) */ PredEntry *pe; Int out; pe = get_pred(Deref(ARG1), Deref(ARG2), "$in_use"); if (EndOfPAEntr(pe)) return FALSE; PELOCK(25,pe); out = static_in_use(pe,TRUE); UNLOCKPE(42,pe); return(out); } static Int p_new_multifile( USES_REGS1 ) { /* '$new_multifile'(+N,+Ar,+Mod) */ Atom at; int arity; PredEntry *pe; Term t = Deref(ARG1); Term mod = Deref(ARG3); if (IsVarTerm(t)) return (FALSE); if (IsAtomTerm(t)) at = AtomOfTerm(t); else return (FALSE); t = Deref(ARG2); if (IsVarTerm(t)) return (FALSE); if (IsIntTerm(t)) arity = IntOfTerm(t); else return FALSE; if (arity == 0) pe = RepPredProp(PredPropByAtom(at, mod)); else pe = RepPredProp(PredPropByFunc(Yap_MkFunctor(at, arity),mod)); PELOCK(26,pe); pe->PredFlags |= MultiFileFlag; /* mutifile-predicates are weird, they do not seat really on the default module */ if (pe->ModuleOfPred == PROLOG_MODULE) pe->ModuleOfPred = TermProlog; if (!(pe->PredFlags & (DynamicPredFlag|LogUpdatePredFlag))) { /* static */ pe->PredFlags |= (SourcePredFlag|CompiledPredFlag); } UNLOCKPE(43,pe); return (TRUE); } static Int p_is_multifile( USES_REGS1 ) { /* '$is_multifile'(+S,+Mod) */ PredEntry *pe; Int out; pe = get_pred(Deref(ARG1), Deref(ARG2), "$is_multifile"); if (EndOfPAEntr(pe)) return FALSE; PELOCK(27,pe); out = (pe->PredFlags & MultiFileFlag); UNLOCKPE(44,pe); return(out); } static Int p_is_log_updatable( USES_REGS1 ) { /* '$is_dynamic'(+P) */ PredEntry *pe; Int out; pe = get_pred(Deref(ARG1), Deref(ARG2), "$is_log_updatable"); if (EndOfPAEntr(pe)) return FALSE; PELOCK(27,pe); out = (pe->PredFlags & LogUpdatePredFlag); UNLOCKPE(45,pe); return(out); } static Int p_is_source( USES_REGS1 ) { /* '$is_dynamic'(+P) */ PredEntry *pe; Int out; pe = get_pred(Deref(ARG1), Deref(ARG2), "$is_source"); if (EndOfPAEntr(pe)) return FALSE; PELOCK(28,pe); out = (pe->PredFlags & SourcePredFlag); UNLOCKPE(46,pe); return(out); } static Int p_owner_file( USES_REGS1 ) { /* '$owner_file'(+P,M,F) */ PredEntry *pe; Atom owner; pe = get_pred(Deref(ARG1), Deref(ARG2), "$is_source"); if (EndOfPAEntr(pe)) return FALSE; PELOCK(29,pe); if (pe->ModuleOfPred == IDB_MODULE) { UNLOCKPE(47,pe); return FALSE; } if (pe->PredFlags & MultiFileFlag) { UNLOCKPE(48,pe); return FALSE; } owner = pe->src.OwnerFile; UNLOCKPE(49,pe); return Yap_unify(ARG3, MkAtomTerm(owner)); } static Int p_mk_d( USES_REGS1 ) { /* '$is_dynamic'(+P) */ PredEntry *pe; pe = get_pred(Deref(ARG1), Deref(ARG2), "$is_source"); if (EndOfPAEntr(pe)) return FALSE; PELOCK(30,pe); if (pe->OpcodeOfPred == UNDEF_OPCODE) { pe->OpcodeOfPred = FAIL_OPCODE; } UNLOCKPE(50,pe); return TRUE; } static Int p_is_dynamic( USES_REGS1 ) { /* '$is_dynamic'(+P) */ PredEntry *pe; Int out; pe = get_pred(Deref(ARG1), Deref(ARG2), "$is_dynamic"); if (EndOfPAEntr(pe)) return FALSE; PELOCK(31,pe); out = (pe->PredFlags & (DynamicPredFlag|LogUpdatePredFlag)); UNLOCKPE(51,pe); return(out); } static Int p_is_metapredicate( USES_REGS1 ) { /* '$is_metapredicate'(+P) */ PredEntry *pe; Int out; pe = get_pred(Deref(ARG1), Deref(ARG2), "$is_meta"); if (EndOfPAEntr(pe)) return FALSE; PELOCK(32,pe); out = (pe->PredFlags & MetaPredFlag); UNLOCKPE(52,pe); return out; } static Int p_is_expandgoalormetapredicate( USES_REGS1 ) { /* '$is_expand_goal_predicate'(+P) */ PredEntry *pe; Term t = Deref(ARG1); Term mod = Deref(ARG2); Int out; if (PRED_GOAL_EXPANSION_ALL) return TRUE; if (IsVarTerm(t)) { return (FALSE); } else if (IsAtomTerm(t)) { Atom at = AtomOfTerm(t); pe = RepPredProp(Yap_GetPredPropByAtom(at, mod)); if (EndOfPAEntr(pe)) { if (PRED_GOAL_EXPANSION_FUNC) { Prop p1 = RepAtom(at)->PropsOfAE; while (p1) { PredEntry *pe = RepPredProp(p1); if (pe->KindOfPE == PEProp) { if (pe->PredFlags & GoalExPredFlag) { PredPropByAtom(at, mod); return TRUE; } else { return FALSE; } } p1 = pe->NextOfPE; } } return FALSE; } } else if (IsApplTerm(t)) { Functor fun = FunctorOfTerm(t); if (IsExtensionFunctor(fun)) { return FALSE; } pe = RepPredProp(Yap_GetPredPropByFunc(fun, mod)); if (EndOfPAEntr(pe)) { if (PRED_GOAL_EXPANSION_FUNC) { FunctorEntry *fe = (FunctorEntry *)fun; if (fe->PropsOfFE && (RepPredProp(fe->PropsOfFE)->PredFlags & GoalExPredFlag)) { PredPropByFunc(fun, mod); return TRUE; } } return FALSE; } } else { return FALSE; } PELOCK(33,pe); out = (pe->PredFlags & (GoalExPredFlag|MetaPredFlag)); UNLOCKPE(53,pe); return(out); } static Int p_pred_exists( USES_REGS1 ) { /* '$pred_exists'(+P,+M) */ PredEntry *pe; Int out; pe = get_pred(Deref(ARG1), Deref(ARG2), "$exists"); if (EndOfPAEntr(pe)) return FALSE; PELOCK(34,pe); if (pe->PredFlags & HiddenPredFlag){ UNLOCKPE(54,pe); return FALSE; } out = (pe->OpcodeOfPred != UNDEF_OPCODE); UNLOCKPE(55,pe); return out; } static Int p_set_pred_module( USES_REGS1 ) { /* '$set_pred_module'(+P,+Mod) */ PredEntry *pe; pe = get_pred(Deref(ARG1), CurrentModule, "set_pred_module/1"); if (EndOfPAEntr(pe)) return FALSE; PELOCK(35,pe); pe->ModuleOfPred = Deref(ARG2); UNLOCKPE(56,pe); return(TRUE); } static Int p_undefined( USES_REGS1 ) { /* '$undefined'(P,Mod) */ PredEntry *pe; pe = get_pred(Deref(ARG1), Deref(ARG2), "undefined/1"); if (EndOfPAEntr(pe)) return TRUE; PELOCK(36,pe); if (pe->PredFlags & (CPredFlag|UserCPredFlag|TestPredFlag|AsmPredFlag|DynamicPredFlag|LogUpdatePredFlag)) { UNLOCKPE(57,pe); return FALSE; } if (pe->OpcodeOfPred == UNDEF_OPCODE) { UNLOCKPE(58,pe); return TRUE; } UNLOCKPE(59,pe); return FALSE; } /* * this predicate should only be called when all clauses for the dynamic * predicate were remove, otherwise chaos will follow!! */ static Int p_kill_dynamic( USES_REGS1 ) { /* '$kill_dynamic'(P,M) */ PredEntry *pe; pe = get_pred(Deref(ARG1), Deref(ARG2), "kill_dynamic/1"); if (EndOfPAEntr(pe)) return TRUE; PELOCK(37,pe); if (!(pe->PredFlags & (DynamicPredFlag|LogUpdatePredFlag))) { UNLOCKPE(60,pe); return FALSE; } if (pe->cs.p_code.LastClause != pe->cs.p_code.FirstClause) { UNLOCKPE(61,pe); return (FALSE); } pe->cs.p_code.LastClause = pe->cs.p_code.FirstClause = NULL; pe->OpcodeOfPred = UNDEF_OPCODE; pe->cs.p_code.TrueCodeOfPred = pe->CodeOfPred = (yamop *)(&(pe->OpcodeOfPred)); pe->PredFlags = pe->PredFlags & GoalExPredFlag; UNLOCKPE(62,pe); return (TRUE); } static Int p_optimizer_on( USES_REGS1 ) { /* '$optimizer_on' */ optimizer_on = TRUE; return (TRUE); } static Int p_optimizer_off( USES_REGS1 ) { /* '$optimizer_off' */ optimizer_on = FALSE; return (TRUE); } static Int p_compile_mode( USES_REGS1 ) { /* $compile_mode(Old,New) */ Term t2, t3 = MkIntTerm(compile_mode); if (!Yap_unify_constant(ARG1, t3)) return (FALSE); t2 = Deref(ARG2); if (IsVarTerm(t2) || !IsIntTerm(t2)) return (FALSE); compile_mode = IntOfTerm(t2) & 1; return (TRUE); } #if !defined(YAPOR) && !defined(THREADS) static yamop *cur_clause(PredEntry *pe, yamop *codeptr) { StaticClause *cl; cl = ClauseCodeToStaticClause(pe->cs.p_code.FirstClause); do { if (IN_BLOCK(codeptr,cl,cl->ClSize)) { return cl->ClCode; } if (cl->ClCode == pe->cs.p_code.LastClause) break; cl = cl->ClNext; } while (TRUE); Yap_Error(SYSTEM_ERROR,TermNil,"could not find clause for indexing code"); return(NULL); } static yamop *cur_log_upd_clause(PredEntry *pe, yamop *codeptr) { LogUpdClause *cl; cl = ClauseCodeToLogUpdClause(pe->cs.p_code.FirstClause); do { if (IN_BLOCK(codeptr,cl->ClCode,cl->ClSize)) { return((yamop *)cl->ClCode); } cl = cl->ClNext; } while (cl != NULL); Yap_Error(SYSTEM_ERROR,TermNil,"could not find clause for indexing code"); return(NULL); } static Int search_for_static_predicate_in_use(PredEntry *p, int check_everything) { choiceptr b_ptr = B; CELL *env_ptr = ENV; if (check_everything && P) { PredEntry *pe = EnvPreg(P); if (p == pe) return TRUE; pe = EnvPreg(CP); if (p == pe) return TRUE; } do { PredEntry *pe; /* check first environments that are younger than our latest choicepoint */ if (check_everything && env_ptr) { /* I do not need to check environments for asserts, only for retracts */ while (env_ptr && b_ptr > (choiceptr)env_ptr) { yamop *cp = (yamop *)env_ptr[E_CP]; PredEntry *pe; pe = EnvPreg(cp); if (p == pe) return(TRUE); if (env_ptr != NULL) env_ptr = (CELL *)(env_ptr[E_E]); } } /* now mark the choicepoint */ if (b_ptr) pe = PredForChoicePt(b_ptr->cp_ap); else return FALSE; if (pe == p) { if (check_everything) return TRUE; PELOCK(38,p); if (p->PredFlags & IndexedPredFlag) { yamop *code_p = b_ptr->cp_ap; yamop *code_beg = p->cs.p_code.TrueCodeOfPred; /* FIX ME */ if (p->PredFlags & LogUpdatePredFlag) { LogUpdIndex *cl = ClauseCodeToLogUpdIndex(code_beg); if (find_owner_log_index(cl, code_p)) b_ptr->cp_ap = cur_log_upd_clause(pe, b_ptr->cp_ap->u.Otapl.d); } else if (p->PredFlags & MegaClausePredFlag) { StaticIndex *cl = ClauseCodeToStaticIndex(code_beg); if (find_owner_static_index(cl, code_p)) b_ptr->cp_ap = cur_clause(pe, b_ptr->cp_ap->u.Otapl.d); } else { /* static clause */ StaticIndex *cl = ClauseCodeToStaticIndex(code_beg); if (find_owner_static_index(cl, code_p)) { b_ptr->cp_ap = cur_clause(pe, b_ptr->cp_ap->u.Otapl.d); } } } UNLOCKPE(63,pe); } env_ptr = b_ptr->cp_env; b_ptr = b_ptr->cp_b; } while (b_ptr != NULL); return(FALSE); } static void mark_pred(int mark, PredEntry *pe) { /* if the predicate is static mark it */ if (pe->ModuleOfPred) { PELOCK(39,p); if (mark) { pe->PredFlags |= InUsePredFlag; } else { pe->PredFlags &= ~InUsePredFlag; } UNLOCK(pe->PELock); } } /* go up the chain of choice_points and environments, marking all static predicates that current execution is depending upon */ static void do_toggle_static_predicates_in_use(int mask) { choiceptr b_ptr = B; CELL *env_ptr = ENV; if (b_ptr == NULL) return; do { PredEntry *pe; /* check first environments that are younger than our latest choicepoint */ while (b_ptr > (choiceptr)env_ptr) { PredEntry *pe = EnvPreg((yamop *)env_ptr[E_CP]); mark_pred(mask, pe); env_ptr = (CELL *)(env_ptr[E_E]); } /* now mark the choicepoint */ if ((b_ptr)) { if ((pe = PredForChoicePt(b_ptr->cp_ap))) { mark_pred(mask, pe); } } env_ptr = b_ptr->cp_env; b_ptr = b_ptr->cp_b; } while (b_ptr != NULL); /* mark or unmark all predicates */ STATIC_PREDICATES_MARKED = mask; } #endif /* !defined(YAPOR) && !defined(THREADS) */ static LogUpdIndex * find_owner_log_index(LogUpdIndex *cl, yamop *code_p) { yamop *code_beg = cl->ClCode; yamop *code_end = (yamop *)((char *)cl + cl->ClSize); if (code_p >= code_beg && code_p <= code_end) { return cl; } cl = cl->ChildIndex; while (cl != NULL) { LogUpdIndex *out; if ((out = find_owner_log_index(cl, code_p)) != NULL) { return out; } cl = cl->SiblingIndex; } return NULL; } static StaticIndex * find_owner_static_index(StaticIndex *cl, yamop *code_p) { yamop *code_beg = cl->ClCode; yamop *code_end = (yamop *)((char *)cl + cl->ClSize); if (code_p >= code_beg && code_p <= code_end) { return cl; } cl = cl->ChildIndex; while (cl != NULL) { StaticIndex *out; if ((out = find_owner_static_index(cl, code_p)) != NULL) { return out; } cl = cl->SiblingIndex; } return NULL; } ClauseUnion * Yap_find_owner_index(yamop *ipc, PredEntry *ap) { /* we assume we have an owner index */ if (ap->PredFlags & LogUpdatePredFlag) { LogUpdIndex *cl = ClauseCodeToLogUpdIndex(ap->cs.p_code.TrueCodeOfPred); return (ClauseUnion *)find_owner_log_index(cl,ipc); } else { StaticIndex *cl = ClauseCodeToStaticIndex(ap->cs.p_code.TrueCodeOfPred); return (ClauseUnion *)find_owner_static_index(cl,ipc); } } static Term all_envs(CELL *env_ptr USES_REGS) { Term tf = AbsPair(H); CELL *start = H; CELL *bp = NULL; /* walk the environment chain */ while (env_ptr) { bp = H; H += 2; /* notice that MkIntegerTerm may increase the Heap */ bp[0] = MkIntegerTerm(LCL0-env_ptr); if (H >= ASP-1024) { H = start; LOCAL_Error_Size = (ASP-1024)-H; while (env_ptr) { LOCAL_Error_Size += 2; env_ptr = (CELL *)(env_ptr[E_E]); } return 0L; } else { bp[1] = AbsPair(H); } env_ptr = (CELL *)(env_ptr[E_E]); } bp[1] = TermNil; return tf; } static Term all_cps(choiceptr b_ptr USES_REGS) { CELL *bp = NULL; CELL *start = H; Term tf = AbsPair(H); while (b_ptr) { bp = H; H += 2; /* notice that MkIntegerTerm may increase the Heap */ bp[0] = MkIntegerTerm((Int)(LCL0-(CELL *)b_ptr)); if (H >= ASP-1024) { H = start; LOCAL_Error_Size = (ASP-1024)-H; while (b_ptr) { LOCAL_Error_Size += 2; b_ptr = b_ptr->cp_b; } return 0L; } else { bp[1] = AbsPair(H); } b_ptr = b_ptr->cp_b; } bp[1] = TermNil; return tf; } static Term all_calls( USES_REGS1 ) { Term ts[4]; Functor f = Yap_MkFunctor(AtomLocalSp,4); ts[0] = MkIntegerTerm((Int)P); ts[1] = MkIntegerTerm((Int)CP); if (yap_flags[STACK_DUMP_ON_ERROR_FLAG]) { ts[2] = all_envs(ENV PASS_REGS); ts[3] = all_cps(B PASS_REGS); if (ts[2] == 0L || ts[3] == 0L) return 0L; } else { ts[2] = ts[3] = TermNil; } return Yap_MkApplTerm(f,4,ts); } Term Yap_all_calls( void ) { CACHE_REGS return all_calls( PASS_REGS1 ); } static Int p_all_choicepoints( USES_REGS1 ) { Term t; while ((t = all_cps(B PASS_REGS)) == 0L) { if (!Yap_gcl(LOCAL_Error_Size, 1, ENV, gc_P(P,CP))) { Yap_Error(OUT_OF_STACK_ERROR, TermNil, "while dumping choicepoints"); return FALSE; } } return Yap_unify(ARG1,t); } static Int p_all_envs( USES_REGS1 ) { Term t; while ((t = all_envs(ENV PASS_REGS)) == 0L) { if (!Yap_gcl(LOCAL_Error_Size, 1, ENV, gc_P(P,CP))) { Yap_Error(OUT_OF_STACK_ERROR, TermNil, "while dumping environments"); return FALSE; } } return Yap_unify(ARG1,t); } static Int p_current_stack( USES_REGS1 ) { Term t; while ((t = all_calls( PASS_REGS1 )) == 0L) { if (!Yap_gcl(LOCAL_Error_Size, 1, ENV, gc_P(P,CP))) { Yap_Error(OUT_OF_STACK_ERROR, TermNil, "while dumping stack"); return FALSE; } } return Yap_unify(ARG1,t); } /* This predicate is to be used by reconsult to mark all predicates currently in use as being executed. The idea is to go up the chain of choice_points and environments. */ static Int p_toggle_static_predicates_in_use( USES_REGS1 ) { #if !defined(YAPOR) && !defined(THREADS) Term t = Deref(ARG1); Int mask; /* find out whether we need to mark or unmark */ if (IsVarTerm(t)) { Yap_Error(INSTANTIATION_ERROR,t,"toggle_static_predicates_in_use/1"); return(FALSE); } if (!IsIntTerm(t)) { Yap_Error(TYPE_ERROR_INTEGER,t,"toggle_static_predicates_in_use/1"); return(FALSE); } else { mask = IntOfTerm(t); } do_toggle_static_predicates_in_use(mask); #endif return TRUE; } static void clause_was_found(PredEntry *pp, Atom *pat, UInt *parity) { if (pp->ModuleOfPred == IDB_MODULE) { if (pp->PredFlags & NumberDBPredFlag) { *parity = 0; *pat = AtomInteger; } else if (pp->PredFlags & AtomDBPredFlag) { *parity = 0; *pat = (Atom)pp->FunctorOfPred; } else { *pat = NameOfFunctor(pp->FunctorOfPred); *parity = ArityOfFunctor(pp->FunctorOfPred); } } else { *parity = pp->ArityOfPE; if (pp->ArityOfPE) { *pat = NameOfFunctor(pp->FunctorOfPred); } else { *pat = (Atom)(pp->FunctorOfPred); } } } static void code_in_pred_info(PredEntry *pp, Atom *pat, UInt *parity) { clause_was_found(pp, pat, parity); } static int code_in_pred_lu_index(LogUpdIndex *icl, yamop *codeptr, CODEADDR *startp, CODEADDR *endp) { LogUpdIndex *cicl; if (IN_BLOCK(codeptr,icl,icl->ClSize)) { if (startp) *startp = (CODEADDR)icl; if (endp) *endp = (CODEADDR)icl+icl->ClSize; return TRUE; } cicl = icl->ChildIndex; while (cicl != NULL) { if (code_in_pred_lu_index(cicl, codeptr, startp, endp)) return TRUE; cicl = cicl->SiblingIndex; } return FALSE; } static int code_in_pred_s_index(StaticIndex *icl, yamop *codeptr, CODEADDR *startp, CODEADDR *endp) { StaticIndex *cicl; if (IN_BLOCK(codeptr,icl,icl->ClSize)) { if (startp) *startp = (CODEADDR)icl; if (endp) *endp = (CODEADDR)icl+icl->ClSize; return TRUE; } cicl = icl->ChildIndex; while (cicl != NULL) { if (code_in_pred_s_index(cicl, codeptr, startp, endp)) return TRUE; cicl = cicl->SiblingIndex; } return FALSE; } static Int find_code_in_clause(PredEntry *pp, yamop *codeptr, CODEADDR *startp, CODEADDR *endp) { Int i = 1; yamop *clcode; clcode = pp->cs.p_code.FirstClause; if (clcode != NULL) { if (pp->PredFlags & LogUpdatePredFlag) { LogUpdClause *cl = ClauseCodeToLogUpdClause(clcode); do { if (IN_BLOCK(codeptr,(CODEADDR)cl,cl->ClSize)) { if (startp) *startp = (CODEADDR)cl; if (endp) *endp = (CODEADDR)cl+cl->ClSize; return i; } i++; cl = cl->ClNext; } while (cl != NULL); } else if (pp->PredFlags & DynamicPredFlag) { do { DynamicClause *cl; cl = ClauseCodeToDynamicClause(clcode); if (IN_BLOCK(codeptr,cl,cl->ClSize)) { if (startp) *startp = (CODEADDR)cl; if (endp) *endp = (CODEADDR)cl+cl->ClSize; return i; } if (clcode == pp->cs.p_code.LastClause) break; i++; clcode = NextDynamicClause(clcode); } while (TRUE); } else if (pp->PredFlags & MegaClausePredFlag) { MegaClause *cl; cl = ClauseCodeToMegaClause(clcode); if (IN_BLOCK(codeptr,cl,cl->ClSize)) { if (startp) *startp = (CODEADDR)cl; if (endp) *endp = (CODEADDR)cl+cl->ClSize; return 1+((char *)codeptr-(char *)cl->ClCode)/cl->ClItemSize; } } else { StaticClause *cl; cl = ClauseCodeToStaticClause(clcode); do { if (IN_BLOCK(codeptr,cl,cl->ClSize)) { if (startp) *startp = (CODEADDR)cl; if (endp) *endp = (CODEADDR)cl+cl->ClSize; return i; } if (cl->ClCode == pp->cs.p_code.LastClause) break; i++; cl = cl->ClNext; } while (TRUE); } } return(0); } static int cl_code_in_pred(PredEntry *pp, yamop *codeptr, CODEADDR *startp, CODEADDR *endp) { Int out; PELOCK(39,pp); /* check if the codeptr comes from the indexing code */ if (pp->PredFlags & IndexedPredFlag) { if (pp->PredFlags & LogUpdatePredFlag) { if (code_in_pred_lu_index(ClauseCodeToLogUpdIndex(pp->cs.p_code.TrueCodeOfPred), codeptr, startp, endp)) { UNLOCK(pp->PELock); return TRUE; } } else { if (code_in_pred_s_index(ClauseCodeToStaticIndex(pp->cs.p_code.TrueCodeOfPred), codeptr, startp, endp)) { UNLOCK(pp->PELock); return TRUE; } } } if (pp->PredFlags & (CPredFlag|AsmPredFlag|UserCPredFlag)) { StaticClause *cl = ClauseCodeToStaticClause(pp->CodeOfPred); if (IN_BLOCK(codeptr,(CODEADDR)cl,cl->ClSize)) { if (startp) *startp = (CODEADDR)cl; if (endp) *endp = (CODEADDR)cl+cl->ClSize; UNLOCK(pp->PELock); return TRUE; } else { UNLOCK(pp->PELock); return FALSE; } } else { out = find_code_in_clause(pp, codeptr, startp, endp); } UNLOCK(pp->PELock); if (out) return TRUE; return FALSE; } static Int code_in_pred(PredEntry *pp, Atom *pat, UInt *parity, yamop *codeptr) { Int out; PELOCK(40,pp); /* check if the codeptr comes from the indexing code */ if (pp->PredFlags & IndexedPredFlag) { if (pp->PredFlags & LogUpdatePredFlag) { if (code_in_pred_lu_index(ClauseCodeToLogUpdIndex(pp->cs.p_code.TrueCodeOfPred), codeptr, NULL, NULL)) { code_in_pred_info(pp, pat, parity); UNLOCK(pp->PELock); return -1; } } else { if (code_in_pred_s_index(ClauseCodeToStaticIndex(pp->cs.p_code.TrueCodeOfPred), codeptr, NULL, NULL)) { code_in_pred_info(pp, pat, parity); UNLOCK(pp->PELock); return -1; } } } if ((out = find_code_in_clause(pp, codeptr, NULL, NULL))) { clause_was_found(pp, pat, parity); } UNLOCK(pp->PELock); return out; } static Int PredForCode(yamop *codeptr, Atom *pat, UInt *parity, Term *pmodule) { Int found = 0; ModEntry *me = CurrentModules; /* should we allow the user to see hidden predicates? */ while (me) { PredEntry *pp; pp = me->PredForME; while (pp != NULL) { if ((found = code_in_pred(pp, pat, parity, codeptr)) != 0) { *pmodule = MkAtomTerm(me->AtomOfME); return found; } pp = pp->NextPredOfModule; } me = me->NextME; } return(0); } Int Yap_PredForCode(yamop *codeptr, find_pred_type where_from, Atom *pat, UInt *parity, Term *pmodule) { PredEntry *p; if (where_from == FIND_PRED_FROM_CP) { p = PredForChoicePt(codeptr); } else if (where_from == FIND_PRED_FROM_ENV) { p = EnvPreg(codeptr); if (p) { Int out; if (p->ModuleOfPred == PROLOG_MODULE) *pmodule = TermProlog; else *pmodule = p->ModuleOfPred; out = find_code_in_clause(p, codeptr, NULL, NULL); clause_was_found(p, pat, parity); return out; } } else { return PredForCode(codeptr, pat, parity, pmodule); } if (p == NULL) { return 0; } clause_was_found(p, pat, parity); if (p->ModuleOfPred == PROLOG_MODULE) *pmodule = TermProlog; else *pmodule = p->ModuleOfPred; return -1; } /* intruction blocks we found ourselves at */ static PredEntry * walk_got_lu_block(LogUpdIndex *cl, CODEADDR *startp, CODEADDR *endp) { PredEntry *pp = cl->ClPred; *startp = (CODEADDR)cl; *endp = (CODEADDR)cl+cl->ClSize; return pp; } /* intruction blocks we found ourselves at */ static PredEntry * walk_got_lu_clause(LogUpdClause *cl, CODEADDR *startp, CODEADDR *endp) { *startp = (CODEADDR)cl; *endp = (CODEADDR)cl+cl->ClSize; return cl->ClPred; } /* we hit a meta-call, so we don't know what is happening */ static PredEntry * found_meta_call(CODEADDR *startp, CODEADDR *endp) { PredEntry *pp = PredMetaCall; *startp = (CODEADDR)&(pp->OpcodeOfPred); *endp = (CODEADDR)NEXTOP((yamop *)&(pp->OpcodeOfPred),e); return pp; } /* intruction blocks we found ourselves at */ static PredEntry * walk_found_c_pred(PredEntry *pp, CODEADDR *startp, CODEADDR *endp) { StaticClause *cl = ClauseCodeToStaticClause(pp->CodeOfPred); *startp = (CODEADDR)&(cl->ClCode); *endp = (CODEADDR)&(cl->ClCode)+cl->ClSize; return pp; } /* we hit a mega-clause, no point in going on */ static PredEntry * found_mega_clause(PredEntry *pp, CODEADDR *startp, CODEADDR *endp) { MegaClause *mcl = ClauseCodeToMegaClause(pp->cs.p_code.FirstClause); *startp = (CODEADDR)mcl; *endp = (CODEADDR)mcl+mcl->ClSize; return pp; } /* we hit a mega-clause, no point in going on */ static PredEntry * found_idb_clause(yamop *pc, CODEADDR *startp, CODEADDR *endp) { LogUpdClause *cl = ClauseCodeToLogUpdClause(pc); *startp = (CODEADDR)cl; *endp = (CODEADDR)cl+cl->ClSize; return cl->ClPred; } /* we hit a expand_index, no point in going on */ static PredEntry * found_expand_index(yamop *pc, CODEADDR *startp, CODEADDR *endp, yamop *codeptr USES_REGS) { PredEntry *pp = codeptr->u.sssllp.p; if (pc == codeptr) { *startp = (CODEADDR)codeptr; *endp = (CODEADDR)NEXTOP(codeptr,sssllp); } return pp; } /* we hit a expand_index, no point in going on */ static PredEntry * found_fail(yamop *pc, CODEADDR *startp, CODEADDR *endp USES_REGS) { PredEntry *pp = RepPredProp(Yap_GetPredPropByAtom(AtomFail,CurrentModule)); *startp = *endp = (CODEADDR)FAILCODE; return pp; } /* we hit a expand_index, no point in going on */ static PredEntry * found_owner_op(yamop *pc, CODEADDR *startp, CODEADDR *endp USES_REGS) { PredEntry *pp = ((PredEntry *)(Unsigned(pc)-(CELL)(&(((PredEntry *)NULL)->OpcodeOfPred)))); *startp = (CODEADDR)&(pp->OpcodeOfPred); *endp = (CODEADDR)NEXTOP((yamop *)&(pp->OpcodeOfPred),e); return pp; } /* we hit a expand_index, no point in going on */ static PredEntry * found_expand(yamop *pc, CODEADDR *startp, CODEADDR *endp USES_REGS) { PredEntry *pp = ((PredEntry *)(Unsigned(pc)-(CELL)(&(((PredEntry *)NULL)->cs.p_code.ExpandCode)))); *startp = (CODEADDR)&(pp->cs.p_code.ExpandCode); *endp = (CODEADDR)NEXTOP((yamop *)&(pp->cs.p_code.ExpandCode),e); return pp; } static PredEntry * found_ystop(yamop *pc, int clause_code, CODEADDR *startp, CODEADDR *endp, PredEntry *pp USES_REGS) { if (pc == YESCODE) { pp = RepPredProp(Yap_GetPredPropByAtom(AtomTrue,CurrentModule)); *startp = (CODEADDR)YESCODE; *endp = (CODEADDR)YESCODE+(CELL)(NEXTOP((yamop *)NULL,e)); return pp; } if (!pp) { /* must be an index */ PredEntry **pep = (PredEntry **)pc->u.l.l; pp = pep[-1]; } if (pp->PredFlags & LogUpdatePredFlag) { if (clause_code) { LogUpdClause *cl = ClauseCodeToLogUpdClause(pc->u.l.l); *startp = (CODEADDR)cl; *endp = (CODEADDR)cl+cl->ClSize; } else { LogUpdIndex *cl = ClauseCodeToLogUpdIndex(pc->u.l.l); *startp = (CODEADDR)cl; *endp = (CODEADDR)cl+cl->ClSize; } } else if (pp->PredFlags & DynamicPredFlag) { DynamicClause *cl = ClauseCodeToDynamicClause(pc->u.l.l); *startp = (CODEADDR)cl; *endp = (CODEADDR)cl+cl->ClSize; } else { if (clause_code) { StaticClause *cl = ClauseCodeToStaticClause(pc->u.l.l); *startp = (CODEADDR)cl; *endp = (CODEADDR)cl+cl->ClSize; } else { StaticIndex *cl = ClauseCodeToStaticIndex(pc->u.l.l); *startp = (CODEADDR)cl; *endp = (CODEADDR)cl+cl->ClSize; } } return pp; } static PredEntry * ClauseInfoForCode(yamop *codeptr, CODEADDR *startp, CODEADDR *endp USES_REGS) { yamop *pc; PredEntry *pp = NULL; int clause_code = FALSE; if (codeptr >= COMMA_CODE && codeptr < FAILCODE) { pp = RepPredProp(Yap_GetPredPropByFunc(FunctorComma,CurrentModule)); *startp = (CODEADDR)COMMA_CODE; *endp = (CODEADDR)(FAILCODE-1); return pp; } pc = codeptr; #include "walkclause.h" return NULL; } PredEntry * Yap_PredEntryForCode(yamop *codeptr, find_pred_type where_from, CODEADDR *startp, CODEADDR *endp) { CACHE_REGS if (where_from == FIND_PRED_FROM_CP) { PredEntry *pp = PredForChoicePt(codeptr); if (cl_code_in_pred(pp, codeptr, startp, endp)) { return pp; } } else if (where_from == FIND_PRED_FROM_ENV) { PredEntry *pp = EnvPreg(codeptr); if (cl_code_in_pred(pp, codeptr, startp, endp)) { return pp; } } else { return ClauseInfoForCode(codeptr, startp, endp PASS_REGS); } return NULL; } static Int p_pred_for_code( USES_REGS1 ) { yamop *codeptr; Atom at; UInt arity; Term tmodule = TermProlog; Int cl; Term t = Deref(ARG1); if (IsVarTerm(t)) { return FALSE; } else if (IsApplTerm(t) && FunctorOfTerm(t) == FunctorStaticClause) { codeptr = Yap_ClauseFromTerm(t)->ClCode; } else if (IsIntegerTerm(t)) { codeptr = (yamop *)IntegerOfTerm(t); } else if (IsDBRefTerm(t)) { codeptr = (yamop *)DBRefOfTerm(t); } else { return FALSE; } cl = PredForCode(codeptr, &at, &arity, &tmodule); if (!tmodule) tmodule = TermProlog; if (cl == 0) { return Yap_unify(ARG5,MkIntTerm(0)); } else { return(Yap_unify(ARG2,MkAtomTerm(at)) && Yap_unify(ARG3,MkIntegerTerm(arity)) && Yap_unify(ARG4,tmodule) && Yap_unify(ARG5,MkIntegerTerm(cl))); } } static Int p_is_profiled( USES_REGS1 ) { Term t = Deref(ARG1); char *s; if (IsVarTerm(t)) { Term ta; if (PROFILING) ta = MkAtomTerm(AtomOn); else ta = MkAtomTerm(AtomOff); Bind((CELL *)t,ta); return(TRUE); } else if (!IsAtomTerm(t)) return(FALSE); s = RepAtom(AtomOfTerm(t))->StrOfAE; if (strcmp(s,"on") == 0) { PROFILING = TRUE; Yap_InitComma(); return(TRUE); } else if (strcmp(s,"off") == 0) { PROFILING = FALSE; Yap_InitComma(); return(TRUE); } return(FALSE); } static Int p_profile_info( USES_REGS1 ) { Term mod = Deref(ARG1); Term tfun = Deref(ARG2); Term out; PredEntry *pe; Term p[3]; if (IsVarTerm(mod) || !IsAtomTerm(mod)) return(FALSE); if (IsVarTerm(tfun)) { return(FALSE); } else if (IsApplTerm(tfun)) { Functor f = FunctorOfTerm(tfun); if (IsExtensionFunctor(f)) { return(FALSE); } pe = RepPredProp(Yap_GetPredPropByFunc(f, mod)); } else if (IsAtomTerm(tfun)) { pe = RepPredProp(Yap_GetPredPropByAtom(AtomOfTerm(tfun), mod)); } else { return(FALSE); } if (EndOfPAEntr(pe)) return(FALSE); LOCK(pe->StatisticsForPred.lock); if (!(pe->StatisticsForPred.NOfEntries)) { UNLOCK(pe->StatisticsForPred.lock); return(FALSE); } p[0] = Yap_MkULLIntTerm(pe->StatisticsForPred.NOfEntries); p[1] = Yap_MkULLIntTerm(pe->StatisticsForPred.NOfHeadSuccesses); p[2] = Yap_MkULLIntTerm(pe->StatisticsForPred.NOfRetries); UNLOCK(pe->StatisticsForPred.lock); out = Yap_MkApplTerm(Yap_MkFunctor(AtomProfile,3),3,p); return(Yap_unify(ARG3,out)); } static Int p_profile_reset( USES_REGS1 ) { Term mod = Deref(ARG1); Term tfun = Deref(ARG2); PredEntry *pe; if (IsVarTerm(mod) || !IsAtomTerm(mod)) return(FALSE); if (IsVarTerm(tfun)) { return(FALSE); } else if (IsApplTerm(tfun)) { Functor f = FunctorOfTerm(tfun); if (IsExtensionFunctor(f)) { return(FALSE); } pe = RepPredProp(Yap_GetPredPropByFunc(f, mod)); } else if (IsAtomTerm(tfun)) { pe = RepPredProp(Yap_GetPredPropByAtom(AtomOfTerm(tfun), mod)); } else { return(FALSE); } if (EndOfPAEntr(pe)) return(FALSE); LOCK(pe->StatisticsForPred.lock); pe->StatisticsForPred.NOfEntries = 0; pe->StatisticsForPred.NOfHeadSuccesses = 0; pe->StatisticsForPred.NOfRetries = 0; UNLOCK(pe->StatisticsForPred.lock); return(TRUE); } static Int p_is_call_counted( USES_REGS1 ) { Term t = Deref(ARG1); char *s; if (IsVarTerm(t)) { Term ta; if (CALL_COUNTING) ta = MkAtomTerm(AtomOn); else ta = MkAtomTerm(AtomOff); Bind((CELL *)t,ta); return(TRUE); } else if (!IsAtomTerm(t)) return(FALSE); s = RepAtom(AtomOfTerm(t))->StrOfAE; if (strcmp(s,"on") == 0) { CALL_COUNTING = TRUE; Yap_InitComma(); return(TRUE); } else if (strcmp(s,"off") == 0) { CALL_COUNTING = FALSE; Yap_InitComma(); return(TRUE); } return(FALSE); } static Int p_call_count_info( USES_REGS1 ) { return(Yap_unify(MkIntegerTerm(LOCAL_ReductionsCounter),ARG1) && Yap_unify(MkIntegerTerm(LOCAL_PredEntriesCounter),ARG2) && Yap_unify(MkIntegerTerm(LOCAL_PredEntriesCounter),ARG3)); } static Int p_call_count_reset( USES_REGS1 ) { LOCAL_ReductionsCounter = 0; LOCAL_ReductionsCounterOn = FALSE; LOCAL_PredEntriesCounter = 0; LOCAL_PredEntriesCounterOn = FALSE; LOCAL_RetriesCounter = 0; LOCAL_RetriesCounterOn = FALSE; return(TRUE); } static Int p_call_count_set( USES_REGS1 ) { int do_calls = IntOfTerm(ARG2); int do_retries = IntOfTerm(ARG4); int do_entries = IntOfTerm(ARG6); if (do_calls) LOCAL_ReductionsCounter = IntegerOfTerm(Deref(ARG1)); LOCAL_ReductionsCounterOn = do_calls; if (do_retries) LOCAL_RetriesCounter = IntegerOfTerm(Deref(ARG3)); LOCAL_RetriesCounterOn = do_retries; if (do_entries) LOCAL_PredEntriesCounter = IntegerOfTerm(Deref(ARG5)); LOCAL_PredEntriesCounterOn = do_entries; return(TRUE); } static Int p_clean_up_dead_clauses( USES_REGS1 ) { while (DeadStaticClauses != NULL) { char *pt = (char *)DeadStaticClauses; Yap_ClauseSpace -= DeadStaticClauses->ClSize; DeadStaticClauses = DeadStaticClauses->ClNext; Yap_InformOfRemoval((CODEADDR)pt); Yap_FreeCodeSpace(pt); } while (DeadStaticIndices != NULL) { char *pt = (char *)DeadStaticIndices; if (DeadStaticIndices->ClFlags & SwitchTableMask) Yap_IndexSpace_SW -= DeadStaticIndices->ClSize; else Yap_IndexSpace_Tree -= DeadStaticIndices->ClSize; DeadStaticIndices = DeadStaticIndices->SiblingIndex; Yap_InformOfRemoval((CODEADDR)pt); Yap_FreeCodeSpace(pt); } while (DeadMegaClauses != NULL) { char *pt = (char *)DeadMegaClauses; Yap_ClauseSpace -= DeadMegaClauses->ClSize; DeadMegaClauses = DeadMegaClauses->ClNext; Yap_InformOfRemoval((CODEADDR)pt); Yap_FreeCodeSpace(pt); } return TRUE; } static Int /* $parent_pred(Module, Name, Arity) */ p_parent_pred( USES_REGS1 ) { /* This predicate is called from the debugger. We assume a sequence of the form a -> b */ Atom at; UInt arity; Term module; if (!PredForCode(P_before_spy, &at, &arity, &module)) { return(Yap_unify(ARG1, MkIntTerm(0)) && Yap_unify(ARG2, MkAtomTerm(AtomMetaCall)) && Yap_unify(ARG3, MkIntTerm(0))); } return(Yap_unify(ARG1, MkIntTerm(module)) && Yap_unify(ARG2, MkAtomTerm(at)) && Yap_unify(ARG3, MkIntTerm(arity))); } static Int /* $system_predicate(P) */ p_system_pred( USES_REGS1 ) { PredEntry *pe; Term t1 = Deref(ARG1); Term mod = Deref(ARG2); restart_system_pred: if (IsVarTerm(t1)) return FALSE; if (IsAtomTerm(t1)) { pe = RepPredProp(Yap_GetPredPropByAtom(AtomOfTerm(t1), mod)); } else if (IsApplTerm(t1)) { Functor funt = FunctorOfTerm(t1); if (IsExtensionFunctor(funt)) { return FALSE; } if (funt == FunctorModule) { Term nmod = ArgOfTerm(1, t1); if (IsVarTerm(nmod)) { Yap_Error(INSTANTIATION_ERROR,ARG1,"system_predicate/1"); return FALSE; } if (!IsAtomTerm(nmod)) { Yap_Error(TYPE_ERROR_ATOM,ARG1,"system_predicate/1"); return FALSE; } t1 = ArgOfTerm(2, t1); goto restart_system_pred; } pe = RepPredProp(Yap_GetPredPropByFunc(funt, mod)); } else if (IsPairTerm(t1)) { return TRUE; } else return FALSE; if (EndOfPAEntr(pe)) return FALSE; return(!pe->ModuleOfPred || /* any predicate in prolog module */ /* any C-pred */ pe->PredFlags & (UserCPredFlag|CPredFlag|BinaryPredFlag|AsmPredFlag|TestPredFlag) || /* any weird user built-in */ pe->OpcodeOfPred == Yap_opcode(_try_userc)); } static Int /* $system_predicate(P) */ p_all_system_pred( USES_REGS1 ) { PredEntry *pe; Term t1 = Deref(ARG1); Term mod = Deref(ARG2); restart_system_pred: if (IsVarTerm(t1)) return TRUE; if (IsAtomTerm(t1)) { pe = RepPredProp(Yap_GetPredPropByAtom(AtomOfTerm(t1), mod)); } else if (IsApplTerm(t1)) { Functor funt = FunctorOfTerm(t1); if (IsExtensionFunctor(funt)) { return FALSE; } if (funt == FunctorModule) { Term nmod = ArgOfTerm(1, t1); if (IsVarTerm(nmod)) { Yap_Error(INSTANTIATION_ERROR,ARG1,"system_predicate/1"); return FALSE; } if (!IsAtomTerm(nmod)) { Yap_Error(TYPE_ERROR_ATOM,ARG1,"system_predicate/1"); return FALSE; } t1 = ArgOfTerm(2, t1); goto restart_system_pred; } pe = RepPredProp(Yap_GetPredPropByFunc(funt, mod)); } else if (IsPairTerm(t1)) { return TRUE; } else return FALSE; if (EndOfPAEntr(pe)) return FALSE; if (pe->ModuleOfPred) { if (!Yap_unify(ARG3,pe->ModuleOfPred)) return FALSE; } else { if (!Yap_unify(ARG3,TermProlog)) return FALSE; } return(!pe->ModuleOfPred || /* any predicate in prolog module */ /* any C-pred */ pe->PredFlags & (UserCPredFlag|CPredFlag|BinaryPredFlag|AsmPredFlag|TestPredFlag) || /* any weird user built-in */ pe->OpcodeOfPred == Yap_opcode(_try_userc)); } static Int /* $system_predicate(P) */ p_hide_predicate( USES_REGS1 ) { PredEntry *pe; Term t1 = Deref(ARG1); Term mod = Deref(ARG2); restart_system_pred: if (IsVarTerm(t1)) return (FALSE); if (IsAtomTerm(t1)) { pe = RepPredProp(Yap_GetPredPropByAtom(AtomOfTerm(t1), mod)); } else if (IsApplTerm(t1)) { Functor funt = FunctorOfTerm(t1); if (IsExtensionFunctor(funt)) { return(FALSE); } if (funt == FunctorModule) { Term nmod = ArgOfTerm(1, t1); if (IsVarTerm(nmod)) { Yap_Error(INSTANTIATION_ERROR,ARG1,"hide_predicate/1"); return(FALSE); } if (!IsAtomTerm(nmod)) { Yap_Error(TYPE_ERROR_ATOM,ARG1,"hide_predicate/1"); return(FALSE); } t1 = ArgOfTerm(2, t1); goto restart_system_pred; } pe = RepPredProp(Yap_GetPredPropByFunc(funt, mod)); } else if (IsPairTerm(t1)) { return (TRUE); } else return (FALSE); if (EndOfPAEntr(pe)) return FALSE; pe->PredFlags |= HiddenPredFlag; return(TRUE); } static Int /* $hidden_predicate(P) */ p_hidden_predicate( USES_REGS1 ) { PredEntry *pe; Term t1 = Deref(ARG1); Term mod = Deref(ARG2); restart_system_pred: if (IsVarTerm(t1)) return (FALSE); if (IsAtomTerm(t1)) { pe = RepPredProp(Yap_GetPredPropByAtom(AtomOfTerm(t1), mod)); } else if (IsApplTerm(t1)) { Functor funt = FunctorOfTerm(t1); if (IsExtensionFunctor(funt)) { return(FALSE); } if (funt == FunctorModule) { Term nmod = ArgOfTerm(1, t1); if (IsVarTerm(nmod)) { Yap_Error(INSTANTIATION_ERROR,ARG1,"hide_predicate/1"); return(FALSE); } if (!IsAtomTerm(nmod)) { Yap_Error(TYPE_ERROR_ATOM,ARG1,"hide_predicate/1"); return(FALSE); } t1 = ArgOfTerm(2, t1); goto restart_system_pred; } pe = RepPredProp(Yap_GetPredPropByFunc(funt, mod)); } else if (IsPairTerm(t1)) { return (TRUE); } else return (FALSE); if (EndOfPAEntr(pe)) return(FALSE); return(pe->PredFlags & HiddenPredFlag); } static Int fetch_next_lu_clause(PredEntry *pe, yamop *i_code, Term th, Term tb, Term tr, yamop *cp_ptr, int first_time) { CACHE_REGS LogUpdClause *cl; Term rtn; Term Terms[3]; Terms[0] = th; Terms[1] = tb; Terms[2] = tr; cl = Yap_FollowIndexingCode(pe, i_code, Terms, NEXTOP(PredLogUpdClause->CodeOfPred,Otapl), cp_ptr); th = Terms[0]; tb = Terms[1]; tr = Terms[2]; /* don't do this!! I might have stored a choice-point and changed ASP Yap_RecoverSlots(3); */ if (cl == NULL) { UNLOCK(pe->PELock); return FALSE; } rtn = MkDBRefTerm((DBRef)cl); #if MULTIPLE_STACKS TRAIL_CLREF(cl); /* So that fail will erase it */ INC_CLREF_COUNT(cl); #else if (!(cl->ClFlags & InUseMask)) { cl->ClFlags |= InUseMask; TRAIL_CLREF(cl); /* So that fail will erase it */ } #endif if (cl->ClFlags & FactMask) { if (!Yap_unify_constant(tb, MkAtomTerm(AtomTrue)) || !Yap_unify(tr, rtn)) { UNLOCK(pe->PELock); return FALSE; } if (pe->ArityOfPE) { Functor f = FunctorOfTerm(th); UInt arity = ArityOfFunctor(f), i; CELL *pt = RepAppl(th)+1; for (i=0; iopc != EXECUTE_CPRED_OP_CODE) { CP = P; ENV = YENV; YENV = ASP; YENV[E_CB] = (CELL) B; } P = cl->ClCode; #if defined(YAPOR) || defined(THREADS) if (pe->PredFlags & ThreadLocalPredFlag) { /* we don't actually need to execute code */ UNLOCK(pe->PELock); } else { PP = pe; } #endif } else { /* we don't actually need to execute code */ UNLOCK(pe->PELock); } return TRUE; } else { Term t; while ((t = Yap_FetchTermFromDB(cl->ClSource)) == 0L) { if (first_time) { ARG5 = th; ARG6 = tb; ARG7 = tr; if (LOCAL_Error_TYPE == OUT_OF_ATTVARS_ERROR) { LOCAL_Error_TYPE = YAP_NO_ERROR; if (!Yap_growglobal(NULL)) { UNLOCK(pe->PELock); Yap_Error(OUT_OF_ATTVARS_ERROR, TermNil, LOCAL_ErrorMessage); return FALSE; } } else { LOCAL_Error_TYPE = YAP_NO_ERROR; if (!Yap_gcl(LOCAL_Error_Size, 7, ENV, gc_P(P,CP))) { UNLOCK(pe->PELock); Yap_Error(OUT_OF_STACK_ERROR, TermNil, LOCAL_ErrorMessage); return FALSE; } } th = ARG5; tb = ARG6; tr = ARG7; } else { ARG6 = th; ARG7 = tb; ARG8 = tr; if (!Yap_gcl(LOCAL_Error_Size, 8, ENV, gc_P(P,CP))) { UNLOCK(pe->PELock); Yap_Error(OUT_OF_STACK_ERROR, TermNil, LOCAL_ErrorMessage); return FALSE; } th = ARG6; tb = ARG7; tr = ARG8; } } UNLOCK(pe->PELock); return(Yap_unify(th, ArgOfTerm(1,t)) && Yap_unify(tb, ArgOfTerm(2,t)) && Yap_unify(tr, rtn)); } } static Int /* $hidden_predicate(P) */ p_log_update_clause( USES_REGS1 ) { PredEntry *pe; Term t1 = Deref(ARG1); Int ret; yamop *new_cp; if (P->opc == EXECUTE_CPRED_OP_CODE) { new_cp = CP; } else { new_cp = P; } pe = get_pred(t1, Deref(ARG2), "clause/3"); if (pe == NULL || EndOfPAEntr(pe)) return FALSE; PELOCK(41,pe); ret = fetch_next_lu_clause(pe, pe->CodeOfPred, t1, ARG3, ARG4, new_cp, TRUE); return ret; } static Int /* $hidden_predicate(P) */ p_continue_log_update_clause( USES_REGS1 ) { PredEntry *pe = (PredEntry *)IntegerOfTerm(Deref(ARG1)); yamop *ipc = (yamop *)IntegerOfTerm(ARG2); PELOCK(42,pe); return fetch_next_lu_clause(pe, ipc, Deref(ARG3), ARG4, ARG5, B->cp_cp, FALSE); } static Int fetch_next_lu_clause_erase(PredEntry *pe, yamop *i_code, Term th, Term tb, Term tr, yamop *cp_ptr, int first_time) { CACHE_REGS LogUpdClause *cl; Term rtn; Term Terms[3]; Terms[0] = th; Terms[1] = tb; Terms[2] = tr; cl = Yap_FollowIndexingCode(pe, i_code, Terms, NEXTOP(PredLogUpdClauseErase->CodeOfPred,Otapl), cp_ptr); th = Terms[0]; tb = Terms[1]; tr = Terms[2]; /* don't do this!! I might have stored a choice-point and changed ASP Yap_RecoverSlots(3); */ if (cl == NULL) { UNLOCK(pe->PELock); return FALSE; } rtn = MkDBRefTerm((DBRef)cl); #if MULTIPLE_STACKS TRAIL_CLREF(cl); /* So that fail will erase it */ INC_CLREF_COUNT(cl); #else if (!(cl->ClFlags & InUseMask)) { cl->ClFlags |= InUseMask; TRAIL_CLREF(cl); /* So that fail will erase it */ } #endif if (cl->ClFlags & FactMask) { if (!Yap_unify_constant(tb, MkAtomTerm(AtomTrue)) || !Yap_unify(tr, rtn)) { UNLOCK(pe->PELock); return FALSE; } if (pe->ArityOfPE) { Functor f = FunctorOfTerm(th); UInt arity = ArityOfFunctor(f), i; CELL *pt = RepAppl(th)+1; for (i=0; iopc != EXECUTE_CPRED_OP_CODE) { CP = P; ENV = YENV; YENV = ASP; YENV[E_CB] = (CELL) B; } P = cl->ClCode; #if defined(YAPOR) || defined(THREADS) if (pe->PredFlags & ThreadLocalPredFlag) { /* we don't actually need to execute code */ UNLOCK(pe->PELock); } else { PP = pe; } #endif } else { /* we don't actually need to execute code */ UNLOCK(pe->PELock); } Yap_ErLogUpdCl(cl); return TRUE; } else { Term t; Int res; while ((t = Yap_FetchTermFromDB(cl->ClSource)) == 0L) { if (first_time) { ARG5 = th; ARG6 = tb; ARG7 = tr; if (LOCAL_Error_TYPE == OUT_OF_ATTVARS_ERROR) { LOCAL_Error_TYPE = YAP_NO_ERROR; if (!Yap_growglobal(NULL)) { UNLOCK(pe->PELock); Yap_Error(OUT_OF_ATTVARS_ERROR, TermNil, LOCAL_ErrorMessage); return FALSE; } } else { LOCAL_Error_TYPE = YAP_NO_ERROR; if (!Yap_gcl(LOCAL_Error_Size, 7, ENV, gc_P(P,CP))) { UNLOCK(pe->PELock); Yap_Error(OUT_OF_STACK_ERROR, TermNil, LOCAL_ErrorMessage); return FALSE; } } th = ARG5; tb = ARG6; tr = ARG7; } else { ARG6 = th; ARG7 = tb; ARG8 = tr; if (!Yap_gcl(LOCAL_Error_Size, 8, ENV, CP)) { UNLOCK(pe->PELock); Yap_Error(OUT_OF_STACK_ERROR, TermNil, LOCAL_ErrorMessage); return FALSE; } th = ARG6; tb = ARG7; tr = ARG8; } } res = Yap_unify(th, ArgOfTerm(1,t)) && Yap_unify(tb, ArgOfTerm(2,t)) && Yap_unify(tr, rtn); if (res) Yap_ErLogUpdCl(cl); UNLOCK(pe->PELock); return res; } } static Int /* $hidden_predicate(P) */ p_log_update_clause_erase( USES_REGS1 ) { PredEntry *pe; Term t1 = Deref(ARG1); Int ret; yamop *new_cp; if (P->opc == EXECUTE_CPRED_OP_CODE) { new_cp = CP; } else { new_cp = P; } pe = get_pred(t1, Deref(ARG2), "clause/3"); if (pe == NULL || EndOfPAEntr(pe)) return FALSE; PELOCK(43,pe); ret = fetch_next_lu_clause_erase(pe, pe->CodeOfPred, t1, ARG3, ARG4, new_cp, TRUE); return ret; } static Int /* $hidden_predicate(P) */ p_continue_log_update_clause_erase( USES_REGS1 ) { PredEntry *pe = (PredEntry *)IntegerOfTerm(Deref(ARG1)); yamop *ipc = (yamop *)IntegerOfTerm(ARG2); PELOCK(44,pe); return fetch_next_lu_clause_erase(pe, ipc, Deref(ARG3), ARG4, ARG5, B->cp_cp, FALSE); } static void adjust_cl_timestamp(LogUpdClause *cl, UInt *arp, UInt *base) { UInt clstamp = cl->ClTimeEnd; if (cl->ClTimeEnd != TIMESTAMP_EOT) { while (arp[0] > clstamp) arp--; if (arp[0] == clstamp) { cl->ClTimeEnd = (arp-base); } else { cl->ClTimeEnd = (arp-base)+1; } } clstamp = cl->ClTimeStart; while (arp[0] > clstamp) arp--; if (arp[0] == clstamp) { cl->ClTimeStart = (arp-base); } else { cl->ClTimeStart = (arp-base)+1; } clstamp = cl->ClTimeEnd; } static Term replace_integer(Term orig, UInt new) { CELL *pt; if (IntInBnd((Int)new)) return MkIntTerm(new); /* should create an old integer */ if (!IsApplTerm(orig)) { Yap_Error(SYSTEM_ERROR,orig,"%uld-->%uld where it should increase",(unsigned long int)IntegerOfTerm(orig),(unsigned long int)new); return MkIntegerTerm(new); } /* appl->appl */ /* replace integer in situ */ pt = RepAppl(orig)+1; *pt = new; return orig; } void /* $hidden_predicate(P) */ Yap_UpdateTimestamps(PredEntry *ap) { CACHE_REGS choiceptr bptr = B; yamop *cl0 = NEXTOP(PredLogUpdClause0->CodeOfPred,Otapl); yamop *cl = NEXTOP(PredLogUpdClause->CodeOfPred,Otapl); yamop *cle = NEXTOP(PredLogUpdClauseErase->CodeOfPred,Otapl); UInt ar = ap->ArityOfPE; UInt *arp, *top, *base; LogUpdClause *lcl; #if THREADS Yap_Error(SYSTEM_ERROR,TermNil,"Timestamp overflow %p", ap); return; #endif if (!ap->cs.p_code.NOfClauses) return; restart: *--ASP = TIMESTAMP_EOT; top = arp = (UInt *)ASP; while (bptr) { op_numbers opnum = Yap_op_from_opcode(bptr->cp_ap->opc); switch (opnum) { case _retry_logical: case _count_retry_logical: case _profiled_retry_logical: case _trust_logical: case _count_trust_logical: case _profiled_trust_logical: if (bptr->cp_ap->u.OtaLl.d->ClPred == ap) { UInt ts = IntegerOfTerm(bptr->cp_args[ar]); if (ts != arp[0]) { if (arp-H < 1024) { goto overflow; } /* be thrifty, have this in case there is a hole */ if (ts != arp[0]-1) { UInt x = arp[0]; *--arp = x; } *--arp = ts; } } bptr = bptr->cp_b; break; case _retry: if ((bptr->cp_ap == cl0 || bptr->cp_ap == cl || bptr->cp_ap == cle) && ((PredEntry *)IntegerOfTerm(bptr->cp_args[0]) == ap)) { UInt ts = IntegerOfTerm(bptr->cp_args[5]); if (ts != arp[0]) { if (arp-H < 1024) { goto overflow; } if (ts != arp[0]-1) { UInt x = arp[0]; *--arp = x; } *--arp = ts; } } bptr = bptr->cp_b; break; default: bptr = bptr->cp_b; continue; } } if (*arp) *--arp = 0L; base = arp; lcl = ClauseCodeToLogUpdClause(ap->cs.p_code.FirstClause); while (lcl) { adjust_cl_timestamp(lcl, top-1, base); lcl = lcl->ClNext; } lcl = DBErasedList; while (lcl) { if (lcl->ClPred == ap) adjust_cl_timestamp(lcl, top-1, base); lcl = lcl->ClNext; } arp = top-1; bptr = B; while (bptr) { op_numbers opnum = Yap_op_from_opcode(bptr->cp_ap->opc); switch (opnum) { case _retry_logical: case _count_retry_logical: case _profiled_retry_logical: case _trust_logical: case _count_trust_logical: case _profiled_trust_logical: if (bptr->cp_ap->u.OtaLl.d->ClPred == ap) { UInt ts = IntegerOfTerm(bptr->cp_args[ar]); while (ts != arp[0]) arp--; bptr->cp_args[ar] = replace_integer(bptr->cp_args[ar], arp-base); } bptr = bptr->cp_b; break; case _retry: if ((bptr->cp_ap == cl0 || bptr->cp_ap == cl || bptr->cp_ap == cle) && ((PredEntry *)IntegerOfTerm(bptr->cp_args[0]) == ap)) { UInt ts = IntegerOfTerm(bptr->cp_args[5]); while (ts != arp[0]) arp--; bptr->cp_args[5] = replace_integer(bptr->cp_args[5], arp-base); } bptr = bptr->cp_b; break; default: bptr = bptr->cp_b; continue; } } return; overflow: if (!Yap_growstack(64*1024)) { Yap_Error(OUT_OF_STACK_ERROR, TermNil, LOCAL_ErrorMessage); return; } goto restart; } static Int fetch_next_static_clause(PredEntry *pe, yamop *i_code, Term th, Term tb, Term tr, yamop *cp_ptr, int first_time) { CACHE_REGS StaticClause *cl; Term rtn; Term Terms[3]; Terms[0] = th; Terms[1] = tb; Terms[2] = tr; cl = (StaticClause *)Yap_FollowIndexingCode(pe, i_code, Terms, NEXTOP(PredStaticClause->CodeOfPred,Otapl), cp_ptr); th = Deref(Terms[0]); tb = Deref(Terms[1]); tr = Deref(Terms[2]); /* don't do this!! I might have stored a choice-point and changed ASP Yap_RecoverSlots(3); */ if (cl == NULL) { UNLOCKPE(45,pe); return FALSE; } if (pe->PredFlags & MegaClausePredFlag) { yamop *code = (yamop *)cl; rtn = Yap_MkMegaRefTerm(pe,code); if (!Yap_unify(tb, MkAtomTerm(AtomTrue)) || !Yap_unify(tr, rtn)) { UNLOCKPE(45,pe); return FALSE; } if (pe->ArityOfPE) { Functor f = FunctorOfTerm(th); UInt arity = ArityOfFunctor(f), i; CELL *pt = RepAppl(th)+1; for (i=0; iopc != EXECUTE_CPRED_OP_CODE) { CP = P; ENV = YENV; YENV = ASP; YENV[E_CB] = (CELL) B; } P = code; } return TRUE; } rtn = Yap_MkStaticRefTerm(cl); if (cl->ClFlags & FactMask) { if (!Yap_unify(tb, MkAtomTerm(AtomTrue)) || !Yap_unify(tr, rtn)) { UNLOCKPE(45,pe); return FALSE; } if (pe->ArityOfPE) { Functor f = FunctorOfTerm(th); UInt arity = ArityOfFunctor(f), i; CELL *pt = RepAppl(th)+1; for (i=0; iopc != EXECUTE_CPRED_OP_CODE) { CP = P; ENV = YENV; YENV = ASP; YENV[E_CB] = (CELL) B; } P = cl->ClCode; } UNLOCKPE(45,pe); return TRUE; } else { Term t; if (!(pe->PredFlags & SourcePredFlag)) { /* no source */ rtn = Yap_MkStaticRefTerm(cl); UNLOCKPE(45,pe); return Yap_unify(tr, rtn); } if (!(pe->PredFlags & SourcePredFlag)) { rtn = Yap_MkStaticRefTerm(cl); return Yap_unify(tr, rtn); } while ((t = Yap_FetchTermFromDB(cl->usc.ClSource)) == 0L) { if (first_time) { if (LOCAL_Error_TYPE == OUT_OF_ATTVARS_ERROR) { LOCAL_Error_TYPE = YAP_NO_ERROR; if (!Yap_growglobal(NULL)) { Yap_Error(OUT_OF_ATTVARS_ERROR, TermNil, LOCAL_ErrorMessage); return FALSE; } } else { LOCAL_Error_TYPE = YAP_NO_ERROR; ARG5 = th; ARG6 = tb; ARG7 = tr; if (!Yap_gc(7, ENV, gc_P(P,CP))) { Yap_Error(OUT_OF_STACK_ERROR, TermNil, LOCAL_ErrorMessage); return FALSE; } th = ARG5; tb = ARG6; tr = ARG7; } } else { LOCAL_Error_TYPE = YAP_NO_ERROR; ARG6 = th; ARG7 = tb; ARG8 = tr; if (!Yap_gcl(LOCAL_Error_Size, 8, ENV, CP)) { Yap_Error(OUT_OF_STACK_ERROR, TermNil, LOCAL_ErrorMessage); return FALSE; } th = ARG6; tb = ARG7; tr = ARG8; } } rtn = Yap_MkStaticRefTerm(cl); UNLOCKPE(45,pe); if (!IsApplTerm(t) || FunctorOfTerm(t) != FunctorAssert) { return(Yap_unify(th, t) && Yap_unify(tb, MkAtomTerm(AtomTrue)) && Yap_unify(tr, rtn)); } else { return(Yap_unify(th, ArgOfTerm(1,t)) && Yap_unify(tb, ArgOfTerm(2,t)) && Yap_unify(tr, rtn)); } } } static Int /* $hidden_predicate(P) */ p_static_clause( USES_REGS1 ) { PredEntry *pe; Term t1 = Deref(ARG1); yamop * new_cp; if (P->opc == EXECUTE_CPRED_OP_CODE) { new_cp = CP; } else { new_cp = P; } pe = get_pred(t1, Deref(ARG2), "clause/3"); if (pe == NULL || EndOfPAEntr(pe)) return FALSE; PELOCK(46,pe); return fetch_next_static_clause(pe, pe->CodeOfPred, ARG1, ARG3, ARG4, new_cp, TRUE); } static Int /* $hidden_predicate(P) */ p_nth_clause( USES_REGS1 ) { PredEntry *pe; Term t1 = Deref(ARG1); Term tn = Deref(ARG3); LogUpdClause *cl; Int ncls; if (!IsIntegerTerm(tn)) return FALSE; ncls = IntegerOfTerm(tn); pe = get_pred(t1, Deref(ARG2), "clause/3"); if (pe == NULL || EndOfPAEntr(pe)) return FALSE; PELOCK(47,pe); if (!(pe->PredFlags & (SourcePredFlag|LogUpdatePredFlag))) { return FALSE; } /* in case we have to index or to expand code */ if (pe->ModuleOfPred != IDB_MODULE) { UInt i; for (i = 1; i <= pe->ArityOfPE; i++) { XREGS[i] = MkVarTerm(); } } else { XREGS[2] = MkVarTerm(); } if(pe->OpcodeOfPred == INDEX_OPCODE) { IPred(pe, 0, CP); } cl = Yap_NthClause(pe, ncls); if (cl == NULL) { UNLOCK(pe->PELock); return FALSE; } if (pe->PredFlags & LogUpdatePredFlag) { #if MULTIPLE_STACKS TRAIL_CLREF(cl); /* So that fail will erase it */ INC_CLREF_COUNT(cl); #else if (!(cl->ClFlags & InUseMask)) { cl->ClFlags |= InUseMask; TRAIL_CLREF(cl); /* So that fail will erase it */ } #endif UNLOCK(pe->PELock); return Yap_unify(MkDBRefTerm((DBRef)cl), ARG4); } else if (pe->PredFlags & MegaClausePredFlag) { UNLOCK(pe->PELock); return Yap_unify(Yap_MkMegaRefTerm(pe,(yamop *)cl), ARG4); } else { UNLOCK(pe->PELock); return Yap_unify(Yap_MkStaticRefTerm((StaticClause *)cl), ARG4); } } static Int /* $hidden_predicate(P) */ p_continue_static_clause( USES_REGS1 ) { PredEntry *pe = (PredEntry *)IntegerOfTerm(Deref(ARG1)); yamop *ipc = (yamop *)IntegerOfTerm(ARG2); PELOCK(48,pe); return fetch_next_static_clause(pe, ipc, Deref(ARG3), ARG4, ARG5, B->cp_ap, FALSE); } #if LOW_PROF static void add_code_in_lu_index(LogUpdIndex *cl, PredEntry *pp) { char *code_end = (char *)cl + cl->ClSize; Yap_inform_profiler_of_clause(cl->ClCode, (yamop *)code_end, pp,0); cl = cl->ChildIndex; while (cl != NULL) { add_code_in_lu_index(cl, pp); cl = cl->SiblingIndex; } } static void add_code_in_static_index(StaticIndex *cl, PredEntry *pp) { char *code_end = (char *)cl + cl->ClSize; Yap_inform_profiler_of_clause(cl->ClCode, (yamop *)code_end, pp,0); cl = cl->ChildIndex; while (cl != NULL) { add_code_in_static_index(cl, pp); cl = cl->SiblingIndex; } } static void add_code_in_pred(PredEntry *pp) { yamop *clcode; PELOCK(49,pp); /* check if the codeptr comes from the indexing code */ /* highly likely this is used for indexing */ Yap_inform_profiler_of_clause((yamop *)&(pp->OpcodeOfPred), (yamop *)(&(pp->OpcodeOfPred)+1), pp, 1); if (pp->PredFlags & (CPredFlag|AsmPredFlag)) { char *code_end; StaticClause *cl; clcode = pp->CodeOfPred; cl = ClauseCodeToStaticClause(clcode); code_end = (char *)cl + cl->ClSize; Yap_inform_profiler_of_clause(clcode, (yamop *)code_end, pp,0); UNLOCK(pp->PELock); return; } Yap_inform_profiler_of_clause((yamop *)&(pp->cs.p_code.ExpandCode), (yamop *)(&(pp->cs.p_code.ExpandCode)+1), pp, 1); clcode = pp->cs.p_code.TrueCodeOfPred; if (pp->PredFlags & IndexedPredFlag) { if (pp->PredFlags & LogUpdatePredFlag) { LogUpdIndex *cl = ClauseCodeToLogUpdIndex(clcode); add_code_in_lu_index(cl, pp); } else { StaticIndex *cl = ClauseCodeToStaticIndex(clcode); add_code_in_static_index(cl, pp); } } clcode = pp->cs.p_code.FirstClause; if (clcode != NULL) { if (pp->PredFlags & LogUpdatePredFlag) { LogUpdClause *cl = ClauseCodeToLogUpdClause(clcode); do { char *code_end; code_end = (char *)cl + cl->ClSize; Yap_inform_profiler_of_clause(cl->ClCode, (yamop *)code_end, pp,0); cl = cl->ClNext; } while (cl != NULL); } else if (pp->PredFlags & DynamicPredFlag) { do { DynamicClause *cl; CODEADDR code_end; cl = ClauseCodeToDynamicClause(clcode); code_end = (CODEADDR)cl + cl->ClSize; Yap_inform_profiler_of_clause(clcode, (yamop *)code_end, pp,0); if (clcode == pp->cs.p_code.LastClause) break; clcode = NextDynamicClause(clcode); } while (TRUE); } else { StaticClause *cl = ClauseCodeToStaticClause(clcode); do { char *code_end; code_end = (char *)cl + cl->ClSize; Yap_inform_profiler_of_clause(cl->ClCode, (yamop *)code_end, pp,0); if (cl->ClCode == pp->cs.p_code.LastClause) break; cl = cl->ClNext; } while (TRUE); } } UNLOCK(pp->PELock); } void Yap_dump_code_area_for_profiler(void) { ModEntry *me = CurrentModules; while (me) { PredEntry *pp = me->PredForME; while (pp != NULL) { /* if (pp->ArityOfPE) { fprintf(stderr,"%s/%d %p\n", RepAtom(NameOfFunctor(pp->FunctorOfPred))->StrOfAE, pp->ArityOfPE, pp); } else { fprintf(stderr,"%s %p\n", RepAtom((Atom)(pp->FunctorOfPred))->StrOfAE, pp); }*/ add_code_in_pred(pp); pp = pp->NextPredOfModule; } me = me->NextME; } Yap_inform_profiler_of_clause(COMMA_CODE, FAILCODE, RepPredProp(Yap_GetPredPropByFunc(FunctorComma,0)),0); Yap_inform_profiler_of_clause(FAILCODE, FAILCODE+1, RepPredProp(Yap_GetPredPropByAtom(AtomFail,0)),0); } #endif /* LOW_PROF */ static UInt index_ssz(StaticIndex *x) { UInt sz = x->ClSize; x = x->ChildIndex; while (x != NULL) { sz += index_ssz(x); x = x->SiblingIndex; } return sz; } static Int static_statistics(PredEntry *pe) { CACHE_REGS UInt sz = 0, cls = 0, isz = 0; StaticClause *cl = ClauseCodeToStaticClause(pe->cs.p_code.FirstClause); if (pe->cs.p_code.NOfClauses > 1 && pe->cs.p_code.TrueCodeOfPred != pe->cs.p_code.FirstClause) { isz = index_ssz(ClauseCodeToStaticIndex(pe->cs.p_code.TrueCodeOfPred)); } if (pe->PredFlags & MegaClausePredFlag) { MegaClause *mcl = ClauseCodeToMegaClause(pe->cs.p_code.FirstClause); return Yap_unify(ARG3, MkIntegerTerm(mcl->ClSize/mcl->ClItemSize)) && Yap_unify(ARG4, MkIntegerTerm(mcl->ClSize)) && Yap_unify(ARG5, MkIntegerTerm(isz)); } if (pe->cs.p_code.NOfClauses) { do { cls++; sz += cl->ClSize; if (cl->ClCode == pe->cs.p_code.LastClause) break; cl = cl->ClNext; } while (TRUE); } return Yap_unify(ARG3, MkIntegerTerm(cls)) && Yap_unify(ARG4, MkIntegerTerm(sz)) && Yap_unify(ARG5, MkIntegerTerm(isz)); } static Int p_static_pred_statistics( USES_REGS1 ) { Int out; PredEntry *pe; pe = get_pred( Deref(ARG1), Deref(ARG2), "predicate_statistics"); if (pe == NIL) return (FALSE); PELOCK(50,pe); if (pe->PredFlags & (DynamicPredFlag|LogUpdatePredFlag|UserCPredFlag|AsmPredFlag|CPredFlag|BinaryPredFlag)) { /* should use '$recordedp' in this case */ UNLOCK(pe->PELock); return FALSE; } out = static_statistics(pe); UNLOCK(pe->PELock); return out; } static Int p_predicate_erased_statistics( USES_REGS1 ) { UInt sz = 0, cls = 0; UInt isz = 0, icls = 0; PredEntry *pe; LogUpdClause *cl = DBErasedList; LogUpdIndex *icl = DBErasedIList; Term tpred = ArgOfTerm(2,Deref(ARG1)); Term tmod = ArgOfTerm(1,Deref(ARG1)); if (EndOfPAEntr(pe=get_pred(tpred, tmod, "predicate_erased_statistics"))) return FALSE; while (cl) { if (cl->ClPred == pe) { cls++; sz += cl->ClSize; } cl = cl->ClNext; } while (icl) { if (pe == icl->ClPred) { icls++; isz += icl->ClSize; } icl = icl->SiblingIndex; } return Yap_unify(ARG2,MkIntegerTerm(cls)) && Yap_unify(ARG3,MkIntegerTerm(sz)) && Yap_unify(ARG4,MkIntegerTerm(icls)) && Yap_unify(ARG5,MkIntegerTerm(isz)); } #ifdef DEBUG static Int p_predicate_lu_cps( USES_REGS1 ) { return Yap_unify(ARG1, MkIntegerTerm(Yap_LiveCps)) && Yap_unify(ARG2, MkIntegerTerm(Yap_FreedCps)) && Yap_unify(ARG3, MkIntegerTerm(Yap_DirtyCps)) && Yap_unify(ARG4, MkIntegerTerm(Yap_NewCps)); } #endif static Int p_program_continuation( USES_REGS1 ) { PredEntry *pe = EnvPreg((yamop *)((ENV_Parent(ENV))[E_CP])); if (pe->ModuleOfPred) { if (!Yap_unify(ARG1,pe->ModuleOfPred)) return FALSE; } else { if (!Yap_unify(ARG1,TermProlog)) return FALSE; } if (pe->ArityOfPE) { if (!Yap_unify(ARG2,MkAtomTerm(NameOfFunctor(pe->FunctorOfPred)))) return FALSE; if (!Yap_unify(ARG3,MkIntegerTerm(ArityOfFunctor(pe->FunctorOfPred)))) return FALSE; } else { if (!Yap_unify(ARG2,MkAtomTerm((Atom)pe->FunctorOfPred))) return FALSE; if (!Yap_unify(ARG3,MkIntTerm(0))) return FALSE; } return TRUE; } static Term BuildActivePred(PredEntry *ap, CELL *vect) { CACHE_REGS UInt i; if (!ap->ArityOfPE) { return MkVarTerm(); } for (i = 0; i < ap->ArityOfPE; i++) { Term t = Deref(vect[i]); if (IsVarTerm(t)) { CELL *pt = VarOfTerm(t); /* one stack */ if (pt > H) { Term nt = MkVarTerm(); Yap_unify(t, nt); } } } return Yap_MkApplTerm(ap->FunctorOfPred, ap->ArityOfPE, vect); } static int UnifyPredInfo(PredEntry *pe, int start_arg USES_REGS) { UInt arity = pe->ArityOfPE; Term tmod, tname; if (pe->ModuleOfPred != IDB_MODULE) { if (pe->ModuleOfPred == PROLOG_MODULE) { tmod = TermProlog; } else { tmod = pe->ModuleOfPred; } if (pe->ArityOfPE == 0) { tname = MkAtomTerm((Atom)pe->FunctorOfPred); } else { Functor f = pe->FunctorOfPred; tname = MkAtomTerm(NameOfFunctor(f)); } } else { tmod = pe->ModuleOfPred; if (pe->PredFlags & NumberDBPredFlag) { tname = MkIntegerTerm(pe->src.IndxId); } else if (pe->PredFlags & AtomDBPredFlag) { tname = MkAtomTerm((Atom)pe->FunctorOfPred); } else { Functor f = pe->FunctorOfPred; tname = MkAtomTerm(NameOfFunctor(f)); } } return Yap_unify(XREGS[start_arg], tmod) && Yap_unify(XREGS[start_arg+1],tname) && Yap_unify(XREGS[start_arg+2],MkIntegerTerm(arity)); } static Int ClauseId(yamop *ipc, PredEntry *pe) { if (!ipc) return 0; return find_code_in_clause(pe, ipc, NULL, NULL); } static Int p_env_info( USES_REGS1 ) { PredEntry *pe; CELL *env = LCL0-IntegerOfTerm(Deref(ARG1)); yamop *env_cp; Term env_b, taddr; if (!env) return FALSE; env_b = MkIntegerTerm((Int)(LCL0-(CELL *)env[E_CB])); env_cp = (yamop *)env[E_CP]; pe = PREVOP(env_cp,Osbpp)->u.Osbpp.p0; taddr = MkIntegerTerm((Int)env); return Yap_unify(ARG3,MkIntegerTerm((Int)env_cp)) && Yap_unify(ARG2, taddr) && Yap_unify(ARG4, env_b); } static Int p_cpc_info( USES_REGS1 ) { PredEntry *pe; yamop *ipc = (yamop *)IntegerOfTerm(Deref(ARG1)); pe = PREVOP(ipc,Osbpp)->u.Osbpp.p0; return UnifyPredInfo(pe, 2 PASS_REGS) && Yap_unify(ARG5,MkIntegerTerm(ClauseId(ipc,pe))); } static Int p_choicepoint_info( USES_REGS1 ) { choiceptr cptr = (choiceptr)(LCL0-IntegerOfTerm(Deref(ARG1))); PredEntry *pe = NULL; int go_on = TRUE; yamop *ipc = cptr->cp_ap; yamop *ncl = NULL; Term t = TermNil, taddr; taddr = MkIntegerTerm((Int)cptr); while (go_on) { op_numbers opnum = Yap_op_from_opcode(ipc->opc); go_on = FALSE; switch (opnum) { #ifdef TABLING case _table_load_answer: #ifdef LOW_LEVEL_TRACER pe = LOAD_CP(cptr)->cp_pred_entry; #else pe = UndefCode; #endif t = MkVarTerm(); break; case _table_try_answer: case _table_retry_me: case _table_trust_me: case _table_retry: case _table_trust: case _table_completion: #ifdef LOW_LEVEL_TRACER #ifdef DETERMINISTIC_TABLING if (IS_DET_GEN_CP(cptr)) { pe = DET_GEN_CP(cptr)->cp_pred_entry; t = MkVarTerm(); } else #endif /* DETERMINISTIC_TABLING */ { pe = GEN_CP(cptr)->cp_pred_entry; t = BuildActivePred(pe, (CELL *)(GEN_CP(B) + 1)); } #else pe = UndefCode; t = MkVarTerm(); #endif break; case _table_answer_resolution: #ifdef LOW_LEVEL_TRACER pe = CONS_CP(cptr)->cp_pred_entry; #else pe = UndefCode; #endif t = MkVarTerm(); break; case _trie_trust_var: case _trie_retry_var: case _trie_trust_var_in_pair: case _trie_retry_var_in_pair: case _trie_trust_val: case _trie_retry_val: case _trie_trust_val_in_pair: case _trie_retry_val_in_pair: case _trie_trust_atom: case _trie_retry_atom: case _trie_trust_atom_in_pair: case _trie_retry_atom_in_pair: case _trie_trust_null: case _trie_retry_null: case _trie_trust_null_in_pair: case _trie_retry_null_in_pair: case _trie_trust_pair: case _trie_retry_pair: case _trie_trust_appl: case _trie_retry_appl: case _trie_trust_appl_in_pair: case _trie_retry_appl_in_pair: case _trie_trust_extension: case _trie_retry_extension: case _trie_trust_double: case _trie_retry_double: case _trie_trust_longint: case _trie_retry_longint: case _trie_trust_gterm: case _trie_retry_gterm: pe = UndefCode; t = MkVarTerm(); break; #endif /* TABLING */ case _try_logical: case _retry_logical: case _trust_logical: case _count_retry_logical: case _count_trust_logical: case _profiled_retry_logical: case _profiled_trust_logical: ncl = ipc->u.OtaLl.d->ClCode; pe = ipc->u.OtaLl.d->ClPred; t = BuildActivePred(pe, cptr->cp_args); break; case _or_else: pe = ipc->u.Osblp.p0; ncl = ipc; t = Yap_MkNewApplTerm(FunctorOr, 2); break; case _or_last: #ifdef YAPOR pe = ipc->u.Osblp.p0; #else pe = ipc->u.p.p; #endif ncl = ipc; t = Yap_MkNewApplTerm(FunctorOr, 2); break; case _retry2: case _retry3: case _retry4: pe = NULL; t = TermNil; ipc = NEXTOP(ipc,l); if (!ncl) ncl = ipc->u.Otapl.d; go_on = TRUE; break; case _jump: pe = NULL; t = TermNil; ipc = ipc->u.l.l; go_on = TRUE; break; case _retry_c: case _retry_userc: ncl = NEXTOP(ipc,OtapFs); pe = ipc->u.OtapFs.p; t = BuildActivePred(pe, cptr->cp_args); break; case _retry_profiled: case _count_retry: pe = NULL; t = TermNil; ncl = ipc->u.Otapl.d; ipc = NEXTOP(ipc,p); go_on = TRUE; break; case _retry_me: case _trust_me: case _count_retry_me: case _count_trust_me: case _profiled_retry_me: case _profiled_trust_me: case _retry_and_mark: case _profiled_retry_and_mark: case _retry: case _trust: if (!ncl) ncl = ipc->u.Otapl.d; pe = ipc->u.Otapl.p; t = BuildActivePred(pe, cptr->cp_args); break; case _Nstop: { Atom at = AtomLive; t = MkAtomTerm(at); pe = RepPredProp(PredPropByAtom(at, CurrentModule)); } break; case _Ystop: default: return FALSE; } } return UnifyPredInfo(pe, 3 PASS_REGS) && Yap_unify(ARG2, taddr) && Yap_unify(ARG6,t) && Yap_unify(ARG7,MkIntegerTerm(ClauseId(ncl,pe))); } static UInt compute_dbcl_size(UInt arity) { UInt sz; switch(arity) { case 2: sz = (UInt)NEXTOP((yamop *)NULL,cc); break; case 3: sz = (UInt)NEXTOP((yamop *)NULL,ccc); break; case 4: sz = (UInt)NEXTOP((yamop *)NULL,cccc); break; case 5: sz = (UInt)NEXTOP((yamop *)NULL,ccccc); break; case 6: sz = (UInt)NEXTOP((yamop *)NULL,cccccc); break; default: sz = arity*(UInt)NEXTOP((yamop *)NULL,xc); break; } return (UInt)NEXTOP((yamop *)sz,p); } #define DerefAndCheck(t, V) \ t = Deref(V); if(IsVarTerm(t) || !(IsAtomOrIntTerm(t))) Yap_Error(TYPE_ERROR_ATOM, t0, "load_db"); static int store_dbcl_size(yamop *pc, UInt arity, Term t0, PredEntry *pe) { Term t; CELL *tp = RepAppl(t0)+1; switch(arity) { case 2: pc->opc = Yap_opcode(_get_2atoms); DerefAndCheck(t, tp[0]); pc->u.cc.c1 = t; DerefAndCheck(t, tp[1]); pc->u.cc.c2 = t; pc = NEXTOP(pc,cc); break; case 3: pc->opc = Yap_opcode(_get_3atoms); DerefAndCheck(t, tp[0]); pc->u.ccc.c1 = t; DerefAndCheck(t, tp[1]); pc->u.ccc.c2 = t; DerefAndCheck(t, tp[2]); pc->u.ccc.c3 = t; pc = NEXTOP(pc,ccc); break; case 4: pc->opc = Yap_opcode(_get_4atoms); DerefAndCheck(t, tp[0]); pc->u.cccc.c1 = t; DerefAndCheck(t, tp[1]); pc->u.cccc.c2 = t; DerefAndCheck(t, tp[2]); pc->u.cccc.c3 = t; DerefAndCheck(t, tp[3]); pc->u.cccc.c4 = t; pc = NEXTOP(pc,cccc); break; case 5: pc->opc = Yap_opcode(_get_5atoms); DerefAndCheck(t, tp[0]); pc->u.ccccc.c1 = t; DerefAndCheck(t, tp[1]); pc->u.ccccc.c2 = t; DerefAndCheck(t, tp[2]); pc->u.ccccc.c3 = t; DerefAndCheck(t, tp[3]); pc->u.ccccc.c4 = t; DerefAndCheck(t, tp[4]); pc->u.ccccc.c5 = t; pc = NEXTOP(pc,ccccc); break; case 6: pc->opc = Yap_opcode(_get_6atoms); DerefAndCheck(t, tp[0]); pc->u.cccccc.c1 = t; DerefAndCheck(t, tp[1]); pc->u.cccccc.c2 = t; DerefAndCheck(t, tp[2]); pc->u.cccccc.c3 = t; DerefAndCheck(t, tp[3]); pc->u.cccccc.c4 = t; DerefAndCheck(t, tp[4]); pc->u.cccccc.c5 = t; DerefAndCheck(t, tp[5]); pc->u.cccccc.c6 = t; pc = NEXTOP(pc,cccccc); break; default: { UInt i; for (i = 0; i< arity; i++) { pc->opc = Yap_opcode(_get_atom); #if PRECOMPUTE_REGADDRESS pc->u.xc.x = (CELL) (XREGS + (i+1)); #else pc->u.xc.x = i+1; #endif DerefAndCheck(t, tp[0]); pc->u.xc.c = t; tp++; pc = NEXTOP(pc,xc); } } break; } pc->opc = Yap_opcode(_procceed); pc->u.p.p = pe; return TRUE; } static Int p_dbload_get_space( USES_REGS1 ) { /* '$number_of_clauses'(Predicate,M,N) */ Term t = Deref(ARG1); Term mod = Deref(ARG2); Term tn = Deref(ARG3); UInt arity; Prop pe; PredEntry *ap; UInt sz; MegaClause *mcl; yamop *ptr; UInt ncls; UInt required; if (IsVarTerm(mod) || !IsAtomTerm(mod)) { return(FALSE); } if (IsAtomTerm(t)) { Atom a = AtomOfTerm(t); arity = 0; pe = PredPropByAtom(a, mod); } else if (IsApplTerm(t)) { register Functor f = FunctorOfTerm(t); arity = ArityOfFunctor(f); pe = PredPropByFunc(f, mod); } else { return FALSE; } if (EndOfPAEntr(pe)) return FALSE; ap = RepPredProp(pe); if (ap->PredFlags & (DynamicPredFlag|LogUpdatePredFlag #ifdef TABLING |TabledPredFlag #endif /* TABLING */ )) { Yap_Error(PERMISSION_ERROR_MODIFY_STATIC_PROCEDURE,t,"dbload_get_space/4"); return FALSE; } if (IsVarTerm(tn) || !IsIntegerTerm(tn)) { return FALSE; } ncls = IntegerOfTerm(tn); if (ncls <= 1) { return FALSE; } sz = compute_dbcl_size(arity); required = sz*ncls+sizeof(MegaClause)+(UInt)NEXTOP((yamop *)NULL,l); #ifdef DEBUG total_megaclause += required; nof_megaclauses++; #endif while (!(mcl = (MegaClause *)Yap_AllocCodeSpace(required))) { if (!Yap_growheap(FALSE, required, NULL)) { /* just fail, the system will keep on going */ return FALSE; } } Yap_ClauseSpace += required; /* cool, it's our turn to do the conversion */ mcl->ClFlags = MegaMask; mcl->ClSize = sz*ncls; mcl->ClPred = ap; mcl->ClItemSize = sz; mcl->ClNext = NULL; ap->cs.p_code.FirstClause = ap->cs.p_code.LastClause = mcl->ClCode; ap->PredFlags |= MegaClausePredFlag; ap->cs.p_code.NOfClauses = ncls; if (ap->PredFlags & (SpiedPredFlag|CountPredFlag|ProfiledPredFlag)) { ap->OpcodeOfPred = Yap_opcode(_spy_pred); } else { ap->OpcodeOfPred = INDEX_OPCODE; } ap->CodeOfPred = ap->cs.p_code.TrueCodeOfPred = (yamop *)(&(ap->OpcodeOfPred)); ptr = (yamop *)((ADDR)mcl->ClCode+ncls*sz); ptr->opc = Yap_opcode(_Ystop); return Yap_unify(ARG4, MkIntegerTerm((Int)mcl)); } static Int p_dbassert( USES_REGS1 ) { /* '$number_of_clauses'(Predicate,M,N) */ Term thandle = Deref(ARG2); Term tn = Deref(ARG3); PredEntry *pe; MegaClause *mcl; Int n; if (IsVarTerm(thandle) || !IsIntegerTerm(thandle)) { return FALSE; } mcl = (MegaClause *)IntegerOfTerm(thandle); if (IsVarTerm(tn) || !IsIntegerTerm(tn)) { return FALSE; } n = IntegerOfTerm(tn); pe = mcl->ClPred; return store_dbcl_size((yamop *)((ADDR)mcl->ClCode+n*(mcl->ClItemSize)),pe->ArityOfPE,Deref(ARG1),pe); } void Yap_InitCdMgr(void) { CACHE_REGS Term cm = CurrentModule; Yap_InitCPred("$compile_mode", 2, p_compile_mode, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$start_consult", 3, p_startconsult, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$show_consult_level", 1, p_showconslultlev, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$end_consult", 0, p_endconsult, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$set_spy", 2, p_setspy, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$rm_spy", 2, p_rmspy, SafePredFlag|SyncPredFlag|HiddenPredFlag); /* gc() may happen during compilation, hence these predicates are now unsafe */ Yap_InitCPred("$compile", 4, p_compile, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$compile_dynamic", 5, p_compile_dynamic, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$purge_clauses", 2, p_purge_clauses, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$in_use", 2, p_in_use, TestPredFlag | SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$is_dynamic", 2, p_is_dynamic, TestPredFlag | SafePredFlag|HiddenPredFlag); Yap_InitCPred("$is_metapredicate", 2, p_is_metapredicate, TestPredFlag | SafePredFlag|HiddenPredFlag); Yap_InitCPred("$is_expand_goal_or_meta_predicate", 2, p_is_expandgoalormetapredicate, TestPredFlag | SafePredFlag|HiddenPredFlag); Yap_InitCPred("$is_log_updatable", 2, p_is_log_updatable, TestPredFlag | SafePredFlag|HiddenPredFlag); Yap_InitCPred("$is_source", 2, p_is_source, TestPredFlag | SafePredFlag|HiddenPredFlag); Yap_InitCPred("$owner_file", 3, p_owner_file, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$mk_d", 2, p_mk_d, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$pred_exists", 2, p_pred_exists, TestPredFlag | SafePredFlag|HiddenPredFlag); Yap_InitCPred("$number_of_clauses", 3, p_number_of_clauses, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$undefined", 2, p_undefined, SafePredFlag|TestPredFlag|HiddenPredFlag); Yap_InitCPred("$optimizer_on", 0, p_optimizer_on, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$clean_up_dead_clauses", 0, p_clean_up_dead_clauses, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$optimizer_off", 0, p_optimizer_off, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$kill_dynamic", 2, p_kill_dynamic, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$new_multifile", 3, p_new_multifile, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$is_multifile", 2, p_is_multifile, TestPredFlag | SafePredFlag|HiddenPredFlag); Yap_InitCPred("$is_profiled", 1, p_is_profiled, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$profile_info", 3, p_profile_info, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$profile_reset", 2, p_profile_reset, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$is_call_counted", 1, p_is_call_counted, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$call_count_info", 3, p_call_count_info, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$call_count_set", 6, p_call_count_set, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$call_count_reset", 0, p_call_count_reset, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$toggle_static_predicates_in_use", 0, p_toggle_static_predicates_in_use, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$set_pred_module", 2, p_set_pred_module, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$parent_pred", 3, p_parent_pred, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$system_predicate", 2, p_system_pred, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$all_system_predicate", 3, p_all_system_pred, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$hide_predicate", 2, p_hide_predicate, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$hidden_predicate", 2, p_hidden_predicate, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$pred_for_code", 5, p_pred_for_code, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$current_stack", 1, p_current_stack, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$log_update_clause", 4, p_log_update_clause, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$continue_log_update_clause", 5, p_continue_log_update_clause, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$log_update_clause_erase", 4, p_log_update_clause_erase, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$continue_log_update_clause_erase", 5, p_continue_log_update_clause_erase, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$static_clause", 4, p_static_clause, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$continue_static_clause", 5, p_continue_static_clause, SafePredFlag|SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$static_pred_statistics", 5, p_static_pred_statistics, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$p_nth_clause", 4, p_nth_clause, SyncPredFlag|HiddenPredFlag); Yap_InitCPred("$program_continuation", 3, p_program_continuation, SafePredFlag|SyncPredFlag|HiddenPredFlag); CurrentModule = HACKS_MODULE; Yap_InitCPred("current_choicepoints", 1, p_all_choicepoints, HiddenPredFlag); Yap_InitCPred("current_continuations", 1, p_all_envs, HiddenPredFlag); Yap_InitCPred("choicepoint", 7, p_choicepoint_info, HiddenPredFlag); Yap_InitCPred("continuation", 4, p_env_info, HiddenPredFlag); Yap_InitCPred("cp_to_predicate", 5, p_cpc_info, HiddenPredFlag); CurrentModule = cm; CurrentModule = DBLOAD_MODULE; Yap_InitCPred("dbload_get_space", 4, p_dbload_get_space, 0L); Yap_InitCPred("dbassert", 3, p_dbassert, 0L); CurrentModule = cm; Yap_InitCPred("$predicate_erased_statistics", 5, p_predicate_erased_statistics, SyncPredFlag); #ifdef DEBUG Yap_InitCPred("$predicate_live_cps", 4, p_predicate_lu_cps, 0L); #endif }