/************************************************************************* * * * YAP Prolog * * * * Yap Prolog was developed at NCCUP - Universidade do Porto * * * * Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 * * * ************************************************************************** * * * File: grow.c * * Last rev: Thu Feb 23 1989 vv * * mods: * * comments: Shifting the stacks * * * *************************************************************************/ #include "absmi.h" #include "YapHeap.h" #include "yapio.h" #include "alloc.h" #include "sshift.h" #include "compile.h" #include "attvar.h" #ifdef CUT_C #include "cut_c.h" #endif /* CUT_C */ #if HAVE_STRING_H #include #endif #if YAPOR_THREADS #include "opt.mavar.h" #endif /* YAPOR_THREADS */ #if !HAVE_STRNCAT #define strncat(s0,s1,sz) strcat(s0,s1) #endif typedef enum { STACK_SHIFTING = 0, STACK_COPYING = 1, STACK_INCREMENTAL_COPYING = 2 } what_stack_copying; STATIC_PROTO(Int p_growheap, ( USES_REGS1 )); STATIC_PROTO(Int p_growstack, ( USES_REGS1 )); STATIC_PROTO(Int p_inform_trail_overflows, ( USES_REGS1 )); STATIC_PROTO(Int p_inform_heap_overflows, ( USES_REGS1 )); STATIC_PROTO(Int p_inform_stack_overflows, ( USES_REGS1 )); /* #define undf7 */ /* #define undf5 */ STATIC_PROTO(int growstack, (long CACHE_TYPE)); STATIC_PROTO(void MoveGlobal, ( CACHE_TYPE1 )); STATIC_PROTO(void MoveLocalAndTrail, ( CACHE_TYPE1 )); STATIC_PROTO(void SetHeapRegs, (int CACHE_TYPE)); STATIC_PROTO(void AdjustTrail, (int, int CACHE_TYPE)); STATIC_PROTO(void AdjustLocal, (int CACHE_TYPE)); STATIC_PROTO(void AdjustGlobal, (long, int CACHE_TYPE)); STATIC_PROTO(void AdjustGrowStack, ( CACHE_TYPE1 )); STATIC_PROTO(int static_growheap, (long,int,struct intermediates *,tr_fr_ptr *, TokEntry **, VarEntry ** CACHE_TYPE)); STATIC_PROTO(void cpcellsd, (CELL *, CELL *, CELL)); STATIC_PROTO(CELL AdjustAppl, (CELL CACHE_TYPE)); STATIC_PROTO(CELL AdjustPair, (CELL CACHE_TYPE)); STATIC_PROTO(void AdjustStacksAndTrail, (long, int CACHE_TYPE)); STATIC_PROTO(void AdjustRegs, (int CACHE_TYPE)); STATIC_PROTO(Term AdjustGlobTerm, (Term CACHE_TYPE)); static void LeaveGrowMode(prolog_exec_mode grow_mode) { CACHE_REGS LOCAL_PrologMode &= ~grow_mode; if (LOCAL_PrologMode & AbortMode) { CACHE_REGS LOCAL_PrologMode &= ~AbortMode; Yap_Error(PURE_ABORT, TermNil, ""); /* in case someone mangles the P register */ save_machine_regs(); #if _MSC_VER || defined(__MINGW32__) /* don't even think about trying this */ #else #if PUSH_REGS restore_absmi_regs(&Yap_standard_regs); #endif siglongjmp (LOCAL_RestartEnv, 1); #endif } } static void cpcellsd(register CELL *Dest, register CELL *Org, CELL NOf) { #if HAVE_MEMMOVE memmove((void *)Dest, (void *)Org, NOf*sizeof(CELL)); #else register Int n_of = NOf; for (; n_of >= 0; n_of--) *Dest++ = *Org++; #endif } static void SetHeapRegs(int copying_threads USES_REGS) { #ifdef undf7 fprintf(GLOBAL_stderr,"HeapBase = %x\tHeapTop=%x\nGlobalBase=%x\tGlobalTop=%x\nLocalBase=%x\tLocatTop=%x\n", Yap_HeapBase, HeapTop, LOCAL_GlobalBase, H, LCL0, ASP); #endif /* The old stack pointers */ LOCAL_OldLCL0 = LCL0; LOCAL_OldASP = ASP; LOCAL_OldGlobalBase = (CELL *)LOCAL_GlobalBase; LOCAL_OldH = H; LOCAL_OldH0 = H0; LOCAL_OldTrailBase = LOCAL_TrailBase; LOCAL_OldTrailTop = LOCAL_TrailTop; LOCAL_OldTR = TR; LOCAL_OldHeapBase = Yap_HeapBase; LOCAL_OldHeapTop = HeapTop; /* Adjust stack addresses */ LOCAL_TrailBase = TrailAddrAdjust(LOCAL_TrailBase); LOCAL_TrailTop = TrailAddrAdjust(LOCAL_TrailTop); CurrentTrailTop = (tr_fr_ptr)(LOCAL_TrailTop-MinTrailGap); if (LOCAL_GDiff) { /* make sure we are not just expanding the delay stack */ LOCAL_GlobalBase = BaseAddrAdjust(LOCAL_GlobalBase); } LOCAL_LocalBase = LocalAddrAdjust(LOCAL_LocalBase); #if !USE_SYSTEM_MALLOC && !USE_DL_MALLOC AuxSp = PtoBaseAdjust(AuxSp); AuxTop = (ADDR)PtoBaseAdjust((CELL *)AuxTop); #endif #if !USE_SYSTEM_MALLOC if (HeapLim) HeapLim = BaseAddrAdjust(HeapLim); #endif /* The registers pointing to one of the stacks */ if (ENV) ENV = PtoLocAdjust(ENV); if (ASP) ASP = PtoLocAdjust(ASP); if (H0) H0 = PtoGloAdjust(H0); LOCK(LOCAL_SignalLock); if (LCL0) LCL0 = PtoLocAdjust(LCL0); UNLOCK(LOCAL_SignalLock); if (H) H = PtoGloAdjust(H); #ifdef CUT_C if (Yap_REGS.CUT_C_TOP) Yap_REGS.CUT_C_TOP = CutCAdjust(Yap_REGS.CUT_C_TOP); #endif if (HB) HB = PtoGloAdjust(HB); if (B) B = ChoicePtrAdjust(B); #ifdef TABLING if (B_FZ) B_FZ = ChoicePtrAdjust(B_FZ); if (BB) BB = ChoicePtrAdjust(BB); if (H_FZ) H_FZ = PtoGloAdjust(H_FZ); if (TR_FZ) TR_FZ = PtoTRAdjust(TR_FZ); #endif /* TABLING */ if (TR) TR = PtoTRAdjust(TR); if (YENV) YENV = PtoLocAdjust(YENV); if (IsOldGlobalPtr(S)) S = PtoGloAdjust(S); else if (IsOldLocalPtr(S)) S = PtoLocAdjust(S); if (!copying_threads) { if (LOCAL_GlobalArena) LOCAL_GlobalArena = AbsAppl(PtoGloAdjust(RepAppl(LOCAL_GlobalArena))); } #ifdef COROUTINING if (LOCAL_AttsMutableList) LOCAL_AttsMutableList = AbsAppl(PtoGloAdjust(RepAppl(LOCAL_AttsMutableList))); if (LOCAL_WokenGoals) LOCAL_WokenGoals = AbsAppl(PtoGloAdjust(RepAppl(LOCAL_WokenGoals))); #endif LOCAL_GcGeneration = AbsAppl(PtoGloAdjust(RepAppl(LOCAL_GcGeneration))); LOCAL_GcPhase = AbsAppl(PtoGloAdjust(RepAppl(LOCAL_GcPhase))); } static void MoveLocalAndTrail( USES_REGS1 ) { /* cpcellsd(To,From,NOfCells) - copy the cells downwards */ #if USE_SYSTEM_MALLOC cpcellsd(ASP, (CELL *)((char *)LOCAL_OldASP+LOCAL_BaseDiff), (CELL *)LOCAL_OldTR - LOCAL_OldASP); #else cpcellsd(ASP, LOCAL_OldASP, (CELL *)LOCAL_OldTR - LOCAL_OldASP); #endif } #ifdef YAPOR_THREADS static void CopyLocalAndTrail( USES_REGS1 ) { /* cpcellsd(To,From,NOfCells) - copy the cells downwards */ #if USE_SYSTEM_MALLOC cpcellsd((void *)ASP, (void *)LOCAL_OldASP, (CELL *)LOCAL_OldTR - LOCAL_OldASP); #endif } static void IncrementalCopyStacksFromWorker( USES_REGS1 ) { memcpy((void *) PtoGloAdjust((CELL *)LOCAL_start_global_copy), (void *) (LOCAL_start_global_copy), (size_t) (LOCAL_end_global_copy - LOCAL_start_global_copy)); memcpy((void *) PtoLocAdjust((CELL *)LOCAL_start_local_copy), (void *) LOCAL_start_local_copy, (size_t) (LOCAL_end_local_copy - LOCAL_start_local_copy)); memcpy((void *) PtoTRAdjust((tr_fr_ptr)LOCAL_start_trail_copy), (void *) (LOCAL_start_trail_copy), (size_t) (LOCAL_end_trail_copy - LOCAL_start_trail_copy)); } #ifndef TABLING static CELL worker_p_binding(int worker_p, CELL *aux_ptr) { CACHE_REGS if (aux_ptr > H) { CELL reg = REMOTE_ThreadHandle(worker_p).current_yaam_regs->LCL0_[aux_ptr-LCL0]; reg = AdjustGlobTerm(reg PASS_REGS); return reg; } else { CELL reg = REMOTE_ThreadHandle(worker_p).current_yaam_regs-> H0_[aux_ptr-H0]; reg = AdjustGlobTerm(reg PASS_REGS); return reg; } } #endif static void RestoreTrail(int worker_p USES_REGS) { tr_fr_ptr aux_tr; /* install fase --> TR and LOCAL_top_cp->cp_tr are equal */ aux_tr = ((choiceptr) LOCAL_start_local_copy)->cp_tr; TR = ((choiceptr) LOCAL_end_local_copy)->cp_tr; if (TR == aux_tr) return; if (aux_tr < TR){ Yap_Error(SYSTEM_ERROR, TermNil, "oops"); } Yap_NEW_MAHASH((ma_h_inner_struct *)H PASS_REGS); while (TR != aux_tr) { CELL aux_cell = TrailTerm(--aux_tr); if (IsVarTerm(aux_cell)) { if (aux_cell < LOCAL_start_global_copy || EQUAL_OR_YOUNGER_CP((choiceptr)LOCAL_end_local_copy, (choiceptr)aux_cell)) { YAPOR_ERROR_CHECKING((CELL *)aux_cell < H0, "RestoreTrail: aux_cell < H0"); YAPOR_ERROR_CHECKING((ADDR)aux_cell > LOCAL_LocalBase, "RestoreTrail: aux_cell > LocalBase"); #ifdef TABLING *((CELL *) aux_cell) = TrailVal(aux_tr); #else *((CELL *) aux_cell) = worker_p_binding(worker_p, CellPtr(aux_cell)); #endif /* TABLING */ } #ifdef TABLING } else if (IsPairTerm(aux_cell)) { /* avoid frozen segments */ aux_cell = (CELL) RepPair(aux_cell); if (IN_BETWEEN(LOCAL_TrailBase, aux_cell, LOCAL_TrailTop)) { aux_tr = (tr_fr_ptr) aux_cell; } #endif /* TABLING */ #ifdef MULTI_ASSIGNMENT_VARIABLES } else if (IsApplTerm(aux_cell)) { CELL *cell_ptr = RepAppl(aux_cell); if (((CELL *)aux_cell < Get_LOCAL_top_cp()->cp_h || EQUAL_OR_YOUNGER_CP(Get_LOCAL_top_cp(), (choiceptr)aux_cell)) && !Yap_lookup_ma_var(cell_ptr PASS_REGS)) { /* first time we found the variable, let's put the new value */ #ifdef TABLING *cell_ptr = TrailVal(aux_tr); #else *cell_ptr = worker_p_binding(worker_p, cell_ptr); #endif /* TABLING */ } /* skip the old value */ aux_tr--; #endif /* MULTI_ASSIGNMENT_VARIABLES */ } } } #endif /* YAPOR_THREADS */ static void MoveGlobal( USES_REGS1 ) { /* * cpcellsd(To,From,NOfCells) - copy the cells downwards - in * absmi.asm */ cpcellsd((CELL *)LOCAL_GlobalBase, (CELL *)LOCAL_OldGlobalBase, LOCAL_OldH - (CELL *)LOCAL_OldGlobalBase); } static void MoveExpandedGlobal( USES_REGS1 ) { /* * cpcellsd(To,From,NOfCells) - copy the cells downwards - in * absmi.asm */ cpcellsd((CELL *)(LOCAL_GlobalBase+(LOCAL_GDiff-LOCAL_BaseDiff)), (CELL *)LOCAL_GlobalBase, LOCAL_OldH - (CELL *)LOCAL_OldGlobalBase); } static void MoveGlobalWithHole( USES_REGS1 ) { /* * cpcellsd(To,From,NOfCells) - copy the cells downwards - in * absmi.asm */ #if USE_SYSTEM_MALLOC cpcellsd((CELL *)((char *)LOCAL_GlobalBase+(LOCAL_GDiff0-LOCAL_BaseDiff)), (CELL *)LOCAL_GlobalBase, LOCAL_OldH - (CELL *)LOCAL_OldGlobalBase); #else cpcellsd((CELL *)((char *)LOCAL_OldGlobalBase+LOCAL_GDiff0), (CELL *)LOCAL_OldGlobalBase, LOCAL_OldH - (CELL *)LOCAL_OldGlobalBase); #endif } static void MoveHalfGlobal(CELL *OldPt USES_REGS) { /* * cpcellsd(To,From,NOfCells) - copy the cells downwards - in * absmi.asm */ UInt diff = LOCAL_OldH-OldPt; CELL *NewPt = (CELL *)((char*)OldPt+LOCAL_GDiff); CELL *IntPt = (CELL *)((char*)OldPt+LOCAL_GDiff0); cpcellsd(NewPt, IntPt, diff); } static inline CELL AdjustAppl(register CELL t0 USES_REGS) { register CELL *t = RepAppl(t0); if (IsOldGlobalPtr(t)) return (AbsAppl(PtoGloAdjust(t))); else if (IsOldTrailPtr(t)) return (AbsAppl(CellPtoTRAdjust(t))); else if (IsHeapP(t)) return (AbsAppl(CellPtoHeapAdjust(t))); #ifdef DEBUG else { /* strange cell */ /* fprintf(GLOBAL_stderr,"% garbage appl %lx found in stacks by stack shifter\n", t0);*/ } #endif return(t0); } static inline CELL AdjustPair(register CELL t0 USES_REGS) { register CELL *t = RepPair(t0); if (IsOldGlobalPtr(t)) return (AbsPair(PtoGloAdjust(t))); if (IsOldTrailPtr(t)) return (AbsPair(CellPtoTRAdjust(t))); else if (IsHeapP(t)) return (AbsPair(CellPtoHeapAdjust(t))); #ifdef DEBUG /* fprintf(GLOBAL_stderr,"% garbage pair %lx found in stacks by stack shifter\n", t0);*/ #endif return(t0); } static void AdjustTrail(int adjusting_heap, int thread_copying USES_REGS) { volatile tr_fr_ptr ptt, tr_base = (tr_fr_ptr)LOCAL_TrailBase; #if defined(YAPOR_THREADS) if (thread_copying == STACK_INCREMENTAL_COPYING) { ptt = (tr_fr_ptr)(LOCAL_end_trail_copy); tr_base = (tr_fr_ptr)(LOCAL_start_trail_copy); } else { #endif ptt = TR; #if defined(YAPOR_THREADS) } #endif /* moving the trail is simple, yeaahhh! */ while (ptt != tr_base) { register CELL reg = TrailTerm(ptt-1); #ifdef FROZEN_STACKS register CELL reg2 = TrailVal(ptt-1); #endif ptt--; if (IsVarTerm(reg)) { if (IsOldLocalInTR(reg)) TrailTerm(ptt) = LocalAdjust(reg); else if (IsOldGlobal(reg)) TrailTerm(ptt) = GlobalAdjust(reg); else if (IsOldTrail(reg)) TrailTerm(ptt) = TrailAdjust(reg); else if (thread_copying) { RESET_VARIABLE(&TrailTerm(ptt)); } } else if (IsPairTerm(reg)) { TrailTerm(ptt) = AdjustPair(reg PASS_REGS); #ifdef MULTI_ASSIGNMENT_VARIABLES /* does not work with new structures */ } else if (IsApplTerm(reg)) { TrailTerm(ptt) = AdjustAppl(reg PASS_REGS); #endif } #ifdef FROZEN_STACKS if (IsVarTerm(reg2)) { if (IsOldLocal(reg2)) TrailVal(ptt) = LocalAdjust(reg2); else if (IsOldGlobal(reg2)) TrailVal(ptt) = GlobalAdjust(reg2); else if (IsOldTrail(reg2)) TrailVal(ptt) = TrailAdjust(reg2); } else if (IsApplTerm(reg2)) { TrailVal(ptt) = AdjustAppl(reg2 PASS_REGS); } else if (IsPairTerm(reg2)) { TrailVal(ptt) = AdjustPair(reg2 PASS_REGS); } #endif } } static void AdjustLocal(int thread_copying USES_REGS) { register CELL reg, *pt, *pt_bot; /* Adjusting the local */ #if defined(YAPOR_THREADS) if (thread_copying == STACK_INCREMENTAL_COPYING) { pt = (CELL *) (LOCAL_end_local_copy); pt_bot = (CELL *) (LOCAL_start_local_copy); } else { #endif pt = LCL0; pt_bot = ASP; #if defined(YAPOR_THREADS) } #endif while (pt > pt_bot) { reg = *--pt; if (IsVarTerm(reg)) { if (IsOldLocal(reg)) *pt = LocalAdjust(reg); else if (IsOldGlobal(reg)) *pt = GlobalAdjust(reg); else if (IsOldTrail(reg)) *pt = TrailAdjust(reg); else if (IsOldCode(reg)) *pt = CodeAdjust(reg); } else if (IsApplTerm(reg)) { *pt = AdjustAppl(reg PASS_REGS); } else if (IsPairTerm(reg)) { *pt = AdjustPair(reg PASS_REGS); } } } static Term AdjustGlobTerm(Term reg USES_REGS) { if (IsVarTerm(reg)) { if (IsOldGlobal(reg)) return GlobalAdjust(reg); else if (IsOldLocal(reg)) return LocalAdjust(reg); #ifdef MULTI_ASSIGNMENT_VARIABLES else if (IsOldTrail(reg)) return TrailAdjust(reg); #endif } else if (IsApplTerm(reg)) return AdjustAppl(reg PASS_REGS); else if (IsPairTerm(reg)) return AdjustPair(reg PASS_REGS); return AtomTermAdjust(reg); } static volatile CELL *cpt=NULL; static void AdjustGlobal(long sz, int thread_copying USES_REGS) { CELL *pt, *pt_max; ArrayEntry *al = LOCAL_DynamicArrays; StaticArrayEntry *sal = LOCAL_StaticArrays; GlobalEntry *gl = LOCAL_GlobalVariables; while (al) { al->ValueOfVE = AdjustGlobTerm(al->ValueOfVE PASS_REGS); al = al->NextAE; } while (gl) { if (IsVarTerm(gl->global) || !IsAtomOrIntTerm(gl->global)) { gl->global = AdjustGlobTerm(gl->global PASS_REGS); } gl = gl->NextGE; } while (sal) { if (sal->ArrayType == array_of_nb_terms) { UInt arity = -sal->ArrayEArity, i; for (i=0; i < arity; i++) { /* sal->ValueOfVE.lterms[i].tlive = AdjustGlobTerm(sal->ValueOfVE.lterms[i].tlive); */ Term tlive = sal->ValueOfVE.lterms[i].tlive; if (!IsVarTerm(tlive) || !IsUnboundVar(&sal->ValueOfVE.lterms[i].tlive)) { sal->ValueOfVE.lterms[i].tlive = AdjustGlobTerm(sal->ValueOfVE.lterms[i].tlive PASS_REGS); } } } sal = sal->NextAE; } /* * to clean the global now that functors are just variables pointing to * the code */ #if defined(YAPOR_THREADS) if (thread_copying == STACK_INCREMENTAL_COPYING) { pt = (CELL *) (LOCAL_start_global_copy); pt_max = (CELL *) (LOCAL_end_global_copy); } else { #endif pt = H0; pt_max = (H-sz/CellSize); #if defined(YAPOR_THREADS) } #endif pt = H0; while (pt < pt_max) { CELL reg; cpt = pt; reg = *pt; if (IsVarTerm(reg)) { if (IsOldGlobal(reg)) *pt = GlobalAdjust(reg); else if (IsOldLocal(reg)) *pt = LocalAdjust(reg); else if (IsOldCode(reg) || IsExtensionFunctor((Functor)reg)) { Functor f; f = (Functor)reg; /* skip bitmaps */ switch((CELL)f) { case (CELL)FunctorDouble: #if SIZEOF_DOUBLE == 2*SIZEOF_LONG_INT pt += 3; #else pt += 2; #endif break; case (CELL)FunctorBigInt: { Int sz = 2+ (sizeof(MP_INT)+ (((MP_INT *)(pt+2))->_mp_alloc*sizeof(mp_limb_t)))/CellSize; Opaque_CallOnGCMark f; Opaque_CallOnGCRelocate f2; Term t = AbsAppl(pt); if ( (f = Yap_blob_gc_mark_handler(t)) ) { CELL ar[256]; Int i,n = (f)(Yap_BlobTag(t), Yap_BlobInfo(t), ar, 256); if (n < 0) { Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"not enough space for slot internal variables"); } for (i = 0; i< n; i++) { CELL *pt = ar+i; CELL reg = *pt; if (IsVarTerm(reg)) { if (IsOldGlobal(reg)) *pt = GlobalAdjust(reg); else if (IsOldLocal(reg)) *pt = LocalAdjust(reg); #ifdef MULTI_ASSIGNMENT_VARIABLES else if (IsOldTrail(reg)) *pt = TrailAdjust(reg); #endif } else if (IsApplTerm(reg)) *pt = AdjustAppl(reg PASS_REGS); else if (IsPairTerm(reg)) *pt = AdjustPair(reg PASS_REGS); else if (IsAtomTerm(reg)) *pt = AtomTermAdjust(reg); } if ( (f2 = Yap_blob_gc_relocate_handler(t)) < 0 ) { int out = (f2)(Yap_BlobTag(t), Yap_BlobInfo(t), ar, n); if (out < 0) Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"bad restore of slot internal variables"); } } pt += sz; } break; case (CELL)0L: break; case (CELL)FunctorLongInt: pt += 2; break; default: *pt = CodeAdjust(reg); } } #ifdef MULTI_ASSIGNMENT_VARIABLES else if (IsOldTrail(reg)) *pt = TrailAdjust(reg); #endif } else if (IsApplTerm(reg)) *pt = AdjustAppl(reg PASS_REGS); else if (IsPairTerm(reg)) *pt = AdjustPair(reg PASS_REGS); else if (IsAtomTerm(reg)) *pt = AtomTermAdjust(reg); pt++; } } /* * When growing the stack we need to adjust: the local stack cells pointing * to the local; the local stack cells and the X terms pointing to the global * (just once) the trail cells pointing both to the global and to the local */ static void AdjustStacksAndTrail(long sz, int copying_threads USES_REGS) { AdjustTrail(TRUE, copying_threads PASS_REGS); AdjustLocal(copying_threads PASS_REGS); AdjustGlobal(sz, copying_threads PASS_REGS); } void Yap_AdjustStacksAndTrail(void) { CACHE_REGS AdjustStacksAndTrail(0, FALSE PASS_REGS); } /* * When growing the stack we need to adjust: the local cells pointing to the * local; the trail cells pointing to the local */ static void AdjustGrowStack( USES_REGS1 ) { AdjustTrail(FALSE, STACK_SHIFTING PASS_REGS); AdjustLocal(STACK_SHIFTING PASS_REGS); } static void AdjustRegs(int n USES_REGS) { int i; CELL reg; for (i = 1; i < n; ++i) { reg = (CELL) XREGS[i]; if (IsVarTerm(reg)) { if (IsOldLocal(reg)) reg = LocalAdjust(reg); else if (IsOldGlobal(reg)) reg = GlobalAdjust(reg); else if (IsOldTrail(reg)) reg = TrailAdjust(reg); else if (IsOldCode(reg)) reg = CodeAdjust(reg); } else if (IsApplTerm(reg)) reg = AdjustAppl(reg PASS_REGS); else if (IsPairTerm(reg)) reg = AdjustPair(reg PASS_REGS); XREGS[i] = (Term) reg; } } static void AdjustVarTable(VarEntry *ves USES_REGS) { ves->VarAdr = TermNil; if (ves->VarRight != NULL) { if (IsOldVarTableTrailPtr(ves->VarRight)) { ves->VarRight = (VarEntry *)TrailAddrAdjust((ADDR)(ves->VarRight)); } AdjustVarTable(ves->VarRight PASS_REGS); } if (ves->VarLeft != NULL) { if (IsOldVarTableTrailPtr(ves->VarLeft)) { ves->VarLeft = (VarEntry *)TrailAddrAdjust((ADDR)(ves->VarLeft)); } AdjustVarTable(ves->VarLeft PASS_REGS); } } /* If we have to shift while we are scanning we need to adjust all pointers created by the scanner (Tokens and Variables) */ static void AdjustScannerStacks(TokEntry **tksp, VarEntry **vep USES_REGS) { TokEntry *tks = *tksp; VarEntry *ves = *vep; if (tks != NULL) { if (IsOldTokenTrailPtr(tks)) { tks = *tksp = TokEntryAdjust(tks); } } while (tks != NULL) { TokEntry *tktmp; switch (tks->Tok) { case Var_tok: case String_tok: if (IsOldTrail(tks->TokInfo)) tks->TokInfo = TrailAdjust(tks->TokInfo); break; case Name_tok: tks->TokInfo = (Term)AtomAdjust((Atom)(tks->TokInfo)); break; default: break; } tktmp = tks->TokNext; if (tktmp != NULL) { if (IsOldTokenTrailPtr(tktmp)) { tktmp = TokEntryAdjust(tktmp); tks->TokNext = tktmp; } } tks = tktmp; } if (ves != NULL) { if (IsOldVarTableTrailPtr(ves)) ves = *vep = (VarEntry *)TrailAddrAdjust((ADDR)ves); AdjustVarTable(ves PASS_REGS); } ves = LOCAL_AnonVarTable; if (ves != NULL) { if (IsOldVarTableTrailPtr(ves)) ves = LOCAL_AnonVarTable = VarEntryAdjust(ves); } while (ves != NULL) { VarEntry *vetmp = ves->VarLeft; if (vetmp != NULL) { if (IsOldVarTableTrailPtr(vetmp)) { vetmp = VarEntryAdjust(vetmp); } ves->VarLeft = vetmp; } ves->VarAdr = TermNil; ves = vetmp; } } void Yap_AdjustRegs(int n) { CACHE_REGS AdjustRegs(n PASS_REGS); } /* Used by do_goal() when we're short of heap space */ static int static_growheap(long size, int fix_code, struct intermediates *cip, tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep USES_REGS) { UInt start_growth_time, growth_time; int gc_verbose; UInt minimal_request = 0L; /* adjust to a multiple of 256) */ if (size < YAP_ALLOC_SIZE) size = YAP_ALLOC_SIZE; size = AdjustPageSize(size); LOCAL_ErrorMessage = NULL; if (!Yap_ExtendWorkSpace(size)) { Int min_size = AdjustPageSize(((CELL)LOCAL_TrailTop-(CELL)LOCAL_GlobalBase)+MinHeapGap); LOCAL_ErrorMessage = NULL; if (size < min_size) size = min_size; minimal_request = size; size = Yap_ExtendWorkSpaceThroughHole(size); if (size < 0) { LOCAL_ErrorMessage = "Database crashed against Stacks"; return FALSE; } } start_growth_time = Yap_cputime(); gc_verbose = Yap_is_gc_verbose(); LOCAL_heap_overflows++; if (gc_verbose) { #if defined(YAPOR_THREADS) fprintf(GLOBAL_stderr, "%% Worker Id %d:\n", worker_id); #endif fprintf(GLOBAL_stderr, "%% Database Overflow %d\n", LOCAL_heap_overflows); fprintf(GLOBAL_stderr, "%% growing the heap %ld bytes\n", size); } /* CreepFlag is set to force heap expansion */ if (LOCAL_ActiveSignals == YAP_CDOVF_SIGNAL) { LOCK(LOCAL_SignalLock); CreepFlag = CalculateStackGap(); UNLOCK(LOCAL_SignalLock); } ASP -= 256; YAPEnterCriticalSection(); LOCAL_TrDiff = LOCAL_LDiff = LOCAL_GDiff = LOCAL_GDiff0 = LOCAL_DelayDiff = LOCAL_BaseDiff = size; LOCAL_XDiff = LOCAL_HDiff = 0; LOCAL_GSplit = NULL; SetHeapRegs(FALSE PASS_REGS); MoveLocalAndTrail( PASS_REGS1 ); if (fix_code) { CELL *SaveOldH = LOCAL_OldH; LOCAL_OldH = (CELL *)cip->freep; MoveGlobal( PASS_REGS1 ); LOCAL_OldH = SaveOldH; } else { MoveGlobal( PASS_REGS1 ); } if (old_trp) { tr_fr_ptr nTR; AdjustScannerStacks(tksp, vep PASS_REGS); nTR = TR; *old_trp = PtoTRAdjust(*old_trp); TR = *old_trp; AdjustStacksAndTrail(0, FALSE PASS_REGS); TR = nTR; } else { AdjustStacksAndTrail(0, FALSE PASS_REGS); } AdjustRegs(MaxTemps PASS_REGS); YAPLeaveCriticalSection(); ASP += 256; if (minimal_request) Yap_AllocHole(minimal_request, size); growth_time = Yap_cputime()-start_growth_time; LOCAL_total_heap_overflow_time += growth_time; if (gc_verbose) { fprintf(GLOBAL_stderr, "%% took %g sec\n", (double)growth_time/1000); fprintf(GLOBAL_stderr, "%% Total of %g sec expanding Database\n", (double)LOCAL_total_heap_overflow_time/1000); } return(TRUE); } /* Used when we're short of heap, usually because of an overflow in the attributed stack, but also because we allocated a zone */ static int static_growglobal(long request, CELL **ptr, CELL *hsplit USES_REGS) { UInt start_growth_time, growth_time; int gc_verbose; char *omax = (char *)H0; ADDR old_GlobalBase = LOCAL_GlobalBase; UInt minimal_request = 0L; long size = request; char vb_msg1 = '\0', *vb_msg2; int do_grow = TRUE; int insert_in_delays = FALSE; /* request is the amount of memory we requested, in bytes; base_move is the shift in global stacks we had to do size is how much space we allocate: it's negative if we just expand the delay stack. do_grow is whether we expand stacks */ if (hsplit) { /* just a little bit of sanity checking */ if (hsplit < H0 && hsplit > (CELL *)LOCAL_GlobalBase) { insert_in_delays = TRUE; /* expanding attributed variables */ if (omax - size > LOCAL_GlobalBase+4096*sizeof(CELL)) { /* we can just ask for more room */ size = 0; do_grow = FALSE; } } else if (hsplit < (CELL*)omax || hsplit > H) return FALSE; else if (hsplit == (CELL *)omax) hsplit = NULL; if (size < 0 || (Unsigned(H)+size < Unsigned(ASP)-CreepFlag && hsplit > H0)) { /* don't need to expand stacks */ insert_in_delays = FALSE; do_grow = FALSE; } } else { if (Unsigned(H)+size < Unsigned(ASP)-CreepFlag) { /* we can just ask for more room */ do_grow = FALSE; } } if (do_grow) { if (size < YAP_ALLOC_SIZE) size = YAP_ALLOC_SIZE; size = AdjustPageSize(size); } /* adjust to a multiple of 256) */ LOCAL_ErrorMessage = NULL; LOCAL_PrologMode |= GrowStackMode; start_growth_time = Yap_cputime(); if (do_grow) { if (!GLOBAL_AllowGlobalExpansion) { LOCAL_ErrorMessage = "Global Stack crashed against Local Stack"; LeaveGrowMode(GrowStackMode); return 0; } if (!GLOBAL_AllowGlobalExpansion || !Yap_ExtendWorkSpace(size)) { /* always fails when using malloc */ LOCAL_ErrorMessage = NULL; size += AdjustPageSize(((CELL)LOCAL_TrailTop-(CELL)LOCAL_GlobalBase)+MinHeapGap); minimal_request = size; size = Yap_ExtendWorkSpaceThroughHole(size); if (size < 0) { LOCAL_ErrorMessage = "Global Stack crashed against Local Stack"; LeaveGrowMode(GrowStackMode); return 0; } } } gc_verbose = Yap_is_gc_verbose(); LOCAL_delay_overflows++; if (gc_verbose) { if (hsplit) { if (hsplit > H0) { vb_msg1 = 'H'; vb_msg2 = "Global Variable Space"; } else { vb_msg1 = 'D'; vb_msg2 = "Global Variable Delay Space"; } } else { vb_msg1 = 'D'; vb_msg2 = "Delay"; } #if defined(YAPOR_THREADS) fprintf(GLOBAL_stderr, "%% Worker Id %d:\n", worker_id); #endif fprintf(GLOBAL_stderr, "%% %cO %s Overflow %d\n", vb_msg1, vb_msg2, LOCAL_delay_overflows); fprintf(GLOBAL_stderr, "%% %cO growing the stacks %ld bytes\n", vb_msg1, size); } ASP -= 256; YAPEnterCriticalSection(); /* we always shift the local and the stack by the same amount */ if (do_grow) { /* we got over a hole */ if (minimal_request) { /* we went over a hole */ LOCAL_BaseDiff = size+((CELL)LOCAL_TrailTop-(CELL)LOCAL_GlobalBase)-minimal_request; LOCAL_LDiff = LOCAL_TrDiff = size; } else { /* we may still have an overflow */ LOCAL_BaseDiff = LOCAL_GlobalBase - old_GlobalBase; /* if we grow, we need to move the stacks */ LOCAL_LDiff = LOCAL_TrDiff = LOCAL_BaseDiff+size; } } else { /* stay still */ LOCAL_LDiff = LOCAL_TrDiff = 0; LOCAL_BaseDiff = 0; } /* now, remember we have delay -- global with a hole in delay or a hole in global */ if (!hsplit) { if (!do_grow) { LOCAL_DelayDiff = LOCAL_GDiff = LOCAL_GDiff0 = size; request = 0L; } else { /* expand delay stack */ LOCAL_DelayDiff = LOCAL_GDiff = LOCAL_GDiff0 = LOCAL_LDiff; } } else if (insert_in_delays) { /* we want to expand a hole for the delay stack */ LOCAL_DelayDiff = size-request; LOCAL_GDiff = LOCAL_GDiff0 = size; } else { /* we want to expand a hole for the delay stack */ LOCAL_GDiff0 = LOCAL_DelayDiff = LOCAL_BaseDiff; LOCAL_GDiff = LOCAL_BaseDiff+request; } LOCAL_GSplit = hsplit; LOCAL_XDiff = LOCAL_HDiff = 0; LOCAL_GlobalBase = old_GlobalBase; SetHeapRegs(FALSE PASS_REGS); if (do_grow) { MoveLocalAndTrail( PASS_REGS1 ); if (hsplit) { MoveGlobalWithHole( PASS_REGS1 ); } else { MoveExpandedGlobal( PASS_REGS1 ); } } else if (!hsplit) { MoveExpandedGlobal( PASS_REGS1 ); } /* don't run through garbage */ if (hsplit && (LOCAL_OldH != hsplit)) { AdjustStacksAndTrail(request, FALSE PASS_REGS); } else { AdjustStacksAndTrail(0, FALSE PASS_REGS); } AdjustRegs(MaxTemps PASS_REGS); if (ptr) { *ptr = PtoLocAdjust(*ptr); } if (hsplit) { if (insert_in_delays) { /* we have things not quite where we want to have them */ cpcellsd((CELL *)(omax+LOCAL_DelayDiff), (CELL *)(omax+LOCAL_GDiff0), (ADDR)hsplit-omax); } else { MoveHalfGlobal(hsplit PASS_REGS); } } YAPLeaveCriticalSection(); ASP += 256; if (minimal_request) { Yap_AllocHole(minimal_request, size); } growth_time = Yap_cputime()-start_growth_time; LOCAL_total_delay_overflow_time += growth_time; if (gc_verbose) { fprintf(GLOBAL_stderr, "%% %cO took %g sec\n", vb_msg1, (double)growth_time/1000); fprintf(GLOBAL_stderr, "%% %cO Total of %g sec expanding stacks \n", vb_msg1, (double)LOCAL_total_delay_overflow_time/1000); } LeaveGrowMode(GrowStackMode); if (hsplit) { return request; } else return LOCAL_GDiff-LOCAL_BaseDiff; } static void fix_compiler_instructions(PInstr *pcpc USES_REGS) { while (pcpc != NULL) { PInstr *ncpc = pcpc->nextInst; switch(pcpc->op) { /* check c_var for functions that point at variables */ case get_var_op: case get_val_op: case unify_var_op: case unify_last_var_op: case unify_val_op: case unify_local_op: case unify_last_val_op: case unify_last_local_op: case put_var_op: case put_val_op: case put_unsafe_op: case write_unsafe_op: case write_var_op: case write_val_op: case write_local_op: case f_var_op: case f_val_op: case fetch_args_for_bccall: case bccall_op: case save_pair_op: case save_appl_op: case save_b_op: case commit_b_op: case fetch_args_vv_op: case fetch_args_cv_op: case fetch_args_vc_op: pcpc->rnd1 = GlobalAdjust(pcpc->rnd1); break; case get_float_op: case put_float_op: case get_longint_op: case put_longint_op: case unify_float_op: case unify_last_float_op: case write_float_op: /* floats might be in the global */ pcpc->rnd1 = AdjustAppl(pcpc->rnd1 PASS_REGS); break; /* hopefully nothing to do */ case nop_op: case ensure_space_op: case get_atom_op: case put_atom_op: case get_num_op: case put_num_op: case align_float_op: case get_bigint_op: case put_bigint_op: case get_dbterm_op: case put_dbterm_op: case get_list_op: case put_list_op: case get_struct_op: case put_struct_op: case unify_atom_op: case unify_last_atom_op: case write_atom_op: case unify_num_op: case unify_last_num_op: case write_num_op: case unify_longint_op: case unify_last_longint_op: case write_longint_op: case unify_bigint_op: case unify_last_bigint_op: case unify_dbterm_op: case unify_last_dbterm_op: case write_bigint_op: case write_dbterm_op: case unify_list_op: case write_list_op: case unify_struct_op: case write_struct_op: case fail_op: case cut_op: case cutexit_op: case allocate_op: case deallocate_op: case tryme_op: case jump_op: case jumpi_op: case procceed_op: case call_op: case execute_op: case safe_call_op: case label_op: case name_op: case pop_op: case retryme_op: case trustme_op: case either_op: case orelse_op: case orlast_op: case push_or_op: case pushpop_or_op: case pop_or_op: case patch_b_op: case try_op: case retry_op: case trust_op: case try_in_op: case jump_v_op: case jump_nv_op: case cache_arg_op: case cache_sub_arg_op: case user_switch_op: case switch_on_type_op: case switch_c_op: case if_c_op: case switch_f_op: case if_f_op: case if_not_op: case index_dbref_op: case index_blob_op: case index_long_op: case if_nonvar_op: case unify_last_list_op: case write_last_list_op: case unify_last_struct_op: case write_last_struct_op: case mark_initialised_pvars_op: case mark_live_regs_op: case enter_profiling_op: case retry_profiled_op: case count_call_op: case count_retry_op: case restore_tmps_op: case restore_tmps_and_skip_op: case enter_lu_op: case empty_call_op: case blob_op: case fetch_args_vi_op: case fetch_args_iv_op: case label_ctl_op: case f_0_op: case native_op: #ifdef TABLING case table_new_answer_op: case table_try_single_op: #endif /* TABLING */ #ifdef YAPOR case sync_op: #endif #ifdef BEAM case run_op: case body_op: case endgoal_op: case try_me_op: case retry_me_op: case trust_me_op: case only_1_clause_op: case create_first_box_op: case create_box_op: case create_last_box_op: case remove_box_op: case remove_last_box_op: case prepare_tries: case std_base_op: case direct_safe_call_op: case commit_op: case skip_while_var_op: case wait_while_var_op: case force_wait_op: case write_op: case is_op: case equal_op: case exit_op: #endif break; } if (ncpc != NULL) { ncpc = (PInstr *)GlobalAddrAdjust((ADDR)(pcpc->nextInst)); pcpc->nextInst = ncpc; } pcpc = ncpc; } } #ifdef TABLING static void fix_tabling_info( USES_REGS1 ) { /* we must fix the dependency frames and the subgoal frames, as they are pointing back to the global stack. */ struct dependency_frame *df; struct subgoal_frame *sg; df = LOCAL_top_dep_fr; while (df) { if (DepFr_backchain_cp(df)) DepFr_backchain_cp(df) = ChoicePtrAdjust(DepFr_backchain_cp(df)); if (DepFr_leader_cp(df)) DepFr_leader_cp(df) = ChoicePtrAdjust(DepFr_leader_cp(df)); if (DepFr_cons_cp(df)) DepFr_cons_cp(df) = ConsumerChoicePtrAdjust(DepFr_cons_cp(df)); df = DepFr_next(df); } sg = LOCAL_top_sg_fr; while (sg) { if (SgFr_gen_cp(sg)) SgFr_gen_cp(sg) = GeneratorChoicePtrAdjust(SgFr_gen_cp(sg)); sg = SgFr_next(sg); } } #endif /* TABLING */ static int do_growheap(int fix_code, UInt in_size, struct intermediates *cip, tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep USES_REGS) { unsigned long size = sizeof(CELL) * K16; int shift_factor = (LOCAL_heap_overflows > 8 ? 8 : LOCAL_heap_overflows); unsigned long sz = size << shift_factor; if (sz < in_size) { sz = in_size; } #ifdef YAPOR Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"cannot grow Heap: more than a worker/thread running"); return FALSE; #endif if (GLOBAL_SizeOfOverflow > sz) { if (size < YAP_ALLOC_SIZE) size = YAP_ALLOC_SIZE; sz = AdjustPageSize(GLOBAL_SizeOfOverflow); } while(sz >= sizeof(CELL) * K16 && !static_growheap(sz, fix_code, cip, old_trp, tksp, vep PASS_REGS)) { size = size/2; sz = size << shift_factor; if (sz < in_size) { return FALSE; } } /* we must fix an instruction chain */ if (fix_code) { PInstr *pcpc = cip->CodeStart; if (pcpc != NULL) { cip->CodeStart = pcpc = (PInstr *)GlobalAddrAdjust((ADDR)pcpc); } fix_compiler_instructions(pcpc PASS_REGS); pcpc = cip->BlobsStart; if (pcpc != NULL) { cip->BlobsStart = pcpc = (PInstr *)GlobalAddrAdjust((ADDR)pcpc); } fix_compiler_instructions(pcpc PASS_REGS); cip->freep = (char *)GlobalAddrAdjust((ADDR)cip->freep); cip->label_offset = (Int *)GlobalAddrAdjust((ADDR)cip->label_offset); } #ifdef TABLING fix_tabling_info( PASS_REGS1 ); #endif /* TABLING */ if (sz >= sizeof(CELL) * K16) { LOCK(LOCAL_SignalLock); LOCAL_ActiveSignals &= ~YAP_CDOVF_SIGNAL; if (!LOCAL_ActiveSignals) CreepFlag = CalculateStackGap(); UNLOCK(LOCAL_SignalLock); return TRUE; } /* failed */ return FALSE; } static void init_new_table(AtomHashEntry *ntb, UInt nsize) { UInt i; for (i = 0; i < nsize; ++i) { INIT_RWLOCK(ntb[i].AERWLock); ntb[i].Entry = NIL; } } static void cp_atom_table(AtomHashEntry *ntb, UInt nsize) { UInt i; for (i = 0; i < AtomHashTableSize; i++) { Atom catom; READ_LOCK(HashChain[i].AERWLock); catom = HashChain[i].Entry; while (catom != NIL) { AtomEntry *ap = RepAtom(catom); Atom natom; CELL hash; hash = HashFunction((unsigned char *)ap->StrOfAE) % nsize; natom = ap->NextOfAE; ap->NextOfAE = ntb[hash].Entry; ntb[hash].Entry = catom; catom = natom; } READ_UNLOCK(HashChain[i].AERWLock); } } static int growatomtable( USES_REGS1 ) { AtomHashEntry *ntb; UInt diff = 3*AtomHashTableSize-1, nsize; UInt start_growth_time = Yap_cputime(), growth_time; int gc_verbose = Yap_is_gc_verbose(); if (diff > 4*1024*1024) diff = 4*1024*1024+7919; else nsize = nsize+7919; LOCK(LOCAL_SignalLock); if (LOCAL_ActiveSignals == YAP_CDOVF_SIGNAL) { CreepFlag = CalculateStackGap(); } LOCAL_ActiveSignals &= ~YAP_CDOVF_SIGNAL; UNLOCK(LOCAL_SignalLock); while ((ntb = (AtomHashEntry *)Yap_AllocCodeSpace(nsize*sizeof(AtomHashEntry))) == NULL) { /* leave for next time */ #if !USE_SYSTEM_MALLOC if (!do_growheap(FALSE, nsize*sizeof(AtomHashEntry), NULL, NULL, NULL, NULL)) #endif return FALSE; } LOCAL_atom_table_overflows ++; if (gc_verbose) { #if defined(YAPOR_THREADS) fprintf(GLOBAL_stderr, "%% Worker Id %d:\n", worker_id); #endif fprintf(GLOBAL_stderr, "%% Atom Table Overflow %d\n", LOCAL_atom_table_overflows ); fprintf(GLOBAL_stderr, "%% growing the atom table to %ld entries\n", (long int)(nsize)); } YAPEnterCriticalSection(); init_new_table(ntb, nsize); cp_atom_table(ntb, nsize); Yap_FreeCodeSpace((char *)HashChain); HashChain = ntb; AtomHashTableSize = nsize; YAPLeaveCriticalSection(); growth_time = Yap_cputime()-start_growth_time; LOCAL_total_atom_table_overflow_time += growth_time; if (gc_verbose) { fprintf(GLOBAL_stderr, "%% took %g sec\n", (double)growth_time/1000); fprintf(GLOBAL_stderr, "%% Total of %g sec expanding atom table \n", (double)LOCAL_total_atom_table_overflow_time/1000); } #if USE_SYSTEM_MALLOC return TRUE; #else if (HeapTop + sizeof(YAP_SEG_SIZE) > HeapLim - MinHeapGap) { /* make sure there is no heap overflow */ int res; YAPEnterCriticalSection(); res = do_growheap(FALSE, 0, NULL, NULL, NULL, NULL PASS_REGS); YAPLeaveCriticalSection(); return res; } else { return TRUE; } #endif } int Yap_growheap(int fix_code, UInt in_size, void *cip) { CACHE_REGS int res; int blob_overflow = (NOfBlobs > NOfBlobsMax); if (NOfAtoms > 2*AtomHashTableSize || blob_overflow) { UInt n = NOfAtoms; if (GLOBAL_AGcThreshold) Yap_atom_gc( PASS_REGS1 ); /* check if we have a significant improvement from agc */ if (!blob_overflow && (n > NOfAtoms+ NOfAtoms/10 || /* +1 = make sure we didn't lose the current atom */ NOfAtoms+1 > 2*AtomHashTableSize)) { res = growatomtable( PASS_REGS1 ); } else { LOCK(LOCAL_SignalLock); if (LOCAL_ActiveSignals == YAP_CDOVF_SIGNAL) { CreepFlag = CalculateStackGap(); } LOCAL_ActiveSignals &= ~YAP_CDOVF_SIGNAL; UNLOCK(LOCAL_SignalLock); return TRUE; } LeaveGrowMode(GrowHeapMode); if (res) return res; } #if USE_SYSTEM_MALLOC P = Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"malloc failed"); res = -1; #else res=do_growheap(fix_code, in_size, (struct intermediates *)cip, NULL, NULL, NULL PASS_REGS); #endif LeaveGrowMode(GrowHeapMode); return res; } int Yap_growheap_in_parser(tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep) { CACHE_REGS int res; res=do_growheap(FALSE, 0L, NULL, old_trp, tksp, vep PASS_REGS); LeaveGrowMode(GrowHeapMode); return res; } int Yap_growglobal(CELL **ptr) { CACHE_REGS unsigned long sz = sizeof(CELL) * K16; #if defined(YAPOR_THREADS) if (GLOBAL_number_workers != 1) { Yap_Error(OUT_OF_STACK_ERROR,TermNil,"cannot grow Global: more than a worker/thread running"); return(FALSE); } #elif defined(THREADS) if (GLOBAL_NOfThreads != 1) { Yap_Error(OUT_OF_STACK_ERROR,TermNil,"cannot grow Global: more than a worker/thread running"); return(FALSE); } #endif if ( static_growglobal(sz, ptr, NULL PASS_REGS) == 0) return FALSE; #ifdef TABLING fix_tabling_info( PASS_REGS1 ); #endif /* TABLING */ return TRUE; } UInt Yap_InsertInGlobal(CELL *where, UInt howmuch) { CACHE_REGS if ((howmuch = static_growglobal(howmuch, NULL, where PASS_REGS)) == 0) return 0; #ifdef TABLING fix_tabling_info( PASS_REGS1 ); #endif /* TABLING */ return howmuch; } int Yap_growstack(long size) { CACHE_REGS int res; LOCAL_PrologMode |= GrowStackMode; res=growstack(size PASS_REGS); LeaveGrowMode(GrowStackMode); return res; } static int execute_growstack(long size0, int from_trail, int in_parser, tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep USES_REGS) { UInt minimal_request = 0L; long size = size0; ADDR old_LOCAL_GlobalBase = LOCAL_GlobalBase; if (!GLOBAL_AllowGlobalExpansion) { LOCAL_ErrorMessage = "Database crashed against stacks"; return FALSE; } if (!Yap_ExtendWorkSpace(size)) { /* make sure stacks and trail are contiguous */ LOCAL_ErrorMessage = NULL; minimal_request = AdjustPageSize(((CELL)LOCAL_TrailTop-(CELL)LOCAL_GlobalBase)+4*MinHeapGap+size0); size = Yap_ExtendWorkSpaceThroughHole(minimal_request); if (size < 0) { LOCAL_ErrorMessage = "Database crashed against stacks"; return FALSE; } YAPEnterCriticalSection(); LOCAL_GDiff = LOCAL_DelayDiff = LOCAL_BaseDiff = size-size0; } else { YAPEnterCriticalSection(); if (LOCAL_GlobalBase != old_LOCAL_GlobalBase) { LOCAL_GDiff = LOCAL_BaseDiff = LOCAL_DelayDiff = LOCAL_GlobalBase-old_LOCAL_GlobalBase; LOCAL_GlobalBase=old_LOCAL_GlobalBase; } else { LOCAL_GDiff = LOCAL_BaseDiff = LOCAL_DelayDiff = 0; } } LOCAL_XDiff = LOCAL_HDiff = 0; LOCAL_GDiff0=LOCAL_GDiff; #if USE_SYSTEM_MALLOC if (from_trail) { LOCAL_TrDiff = LOCAL_LDiff = LOCAL_GDiff; } else { LOCAL_TrDiff = LOCAL_LDiff = size+LOCAL_GDiff; } #else if (from_trail) { LOCAL_TrDiff = LOCAL_LDiff = size-size0; } else { LOCAL_TrDiff = LOCAL_LDiff = size; } #endif ASP -= 256; SetHeapRegs(FALSE PASS_REGS); if (from_trail) { LOCAL_TrailTop += size0; CurrentTrailTop = (tr_fr_ptr)(LOCAL_TrailTop-MinTrailGap); } if (LOCAL_LDiff) { MoveLocalAndTrail( PASS_REGS1 ); } if (LOCAL_GDiff) { #if !USE_SYSTEM_MALLOC /* That is done by realloc */ MoveGlobal( PASS_REGS1 ); #endif if (in_parser) { tr_fr_ptr nTR; AdjustScannerStacks(tksp, vep PASS_REGS); nTR = TR; *old_trp = PtoTRAdjust(*old_trp); TR = *old_trp; AdjustStacksAndTrail(0, FALSE PASS_REGS); TR = nTR; } else { AdjustStacksAndTrail(0, FALSE PASS_REGS); } AdjustRegs(MaxTemps PASS_REGS); #ifdef TABLING fix_tabling_info( PASS_REGS1 ); #endif /* TABLING */ } else if (LOCAL_LDiff) { if (in_parser) { tr_fr_ptr nTR; AdjustScannerStacks(tksp, vep PASS_REGS); nTR = TR; *old_trp = PtoTRAdjust(*old_trp); TR = *old_trp; AdjustGrowStack( PASS_REGS1 ); TR = nTR; } else { AdjustGrowStack( PASS_REGS1 ); } AdjustRegs(MaxTemps PASS_REGS); #ifdef TABLING fix_tabling_info( PASS_REGS1 ); #endif /* TABLING */ } YAPLeaveCriticalSection(); ASP += 256; if (minimal_request) Yap_AllocHole(minimal_request, size); return TRUE; } /* Used by do_goal() when we're short of stack space */ static int growstack(long size USES_REGS) { UInt start_growth_time, growth_time; int gc_verbose; /* adjust to a multiple of 256) */ if (size < YAP_ALLOC_SIZE) size = YAP_ALLOC_SIZE; size = AdjustPageSize(size); LOCAL_ErrorMessage = NULL; start_growth_time = Yap_cputime(); gc_verbose = Yap_is_gc_verbose(); LOCAL_stack_overflows++; if (gc_verbose) { #if defined(YAPOR) || defined(THREADS) fprintf(GLOBAL_stderr, "%% Worker Id %d:\n", worker_id); #endif fprintf(GLOBAL_stderr, "%% Stack Overflow %d\n", LOCAL_stack_overflows); fprintf(GLOBAL_stderr, "%% Global: %8ld cells (%p-%p)\n", (unsigned long int)(H-(CELL *)LOCAL_GlobalBase),LOCAL_GlobalBase,H); fprintf(GLOBAL_stderr, "%% Local:%8ld cells (%p-%p)\n", (unsigned long int)(LCL0-ASP),LCL0,ASP); fprintf(GLOBAL_stderr, "%% Trail:%8ld cells (%p-%p)\n", (unsigned long int)(TR-(tr_fr_ptr)LOCAL_TrailBase),LOCAL_TrailBase,TR); fprintf(GLOBAL_stderr, "%% Growing the stacks %ld bytes\n", size); } if (!execute_growstack(size, FALSE, FALSE, NULL, NULL, NULL PASS_REGS)) return FALSE; growth_time = Yap_cputime()-start_growth_time; LOCAL_total_stack_overflow_time += growth_time; if (gc_verbose) { fprintf(GLOBAL_stderr, "%% took %g sec\n", (double)growth_time/1000); fprintf(GLOBAL_stderr, "%% Total of %g sec expanding stacks \n", (double)LOCAL_total_stack_overflow_time/1000); } return TRUE; } /* Used by parser when we're short of stack space */ int Yap_growstack_in_parser(tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep) { CACHE_REGS UInt size; UInt start_growth_time, growth_time; int gc_verbose; LOCAL_PrologMode |= GrowStackMode; /* adjust to a multiple of 256) */ size = AdjustPageSize((ADDR)LCL0-LOCAL_GlobalBase); LOCAL_ErrorMessage = NULL; start_growth_time = Yap_cputime(); gc_verbose = Yap_is_gc_verbose(); LOCAL_stack_overflows++; if (gc_verbose) { #if defined(YAPOR) || defined(THREADS) fprintf(GLOBAL_stderr, "%% Worker Id %d:\n", worker_id); #endif fprintf(GLOBAL_stderr, "%% Stack Overflow %d\n", LOCAL_stack_overflows); fprintf(GLOBAL_stderr, "%% Global: %8ld cells (%p-%p)\n", (unsigned long int)(H-(CELL *)LOCAL_GlobalBase),LOCAL_GlobalBase,H); fprintf(GLOBAL_stderr, "%% Local:%8ld cells (%p-%p)\n", (unsigned long int)(LCL0-ASP),LCL0,ASP); fprintf(GLOBAL_stderr, "%% Trail:%8ld cells (%p-%p)\n", (unsigned long int)(TR-(tr_fr_ptr)LOCAL_TrailBase),LOCAL_TrailBase,TR); fprintf(GLOBAL_stderr, "%% Growing the stacks %ld bytes\n", (unsigned long int)size); } if (!execute_growstack(size, FALSE, TRUE, old_trp, tksp, vep PASS_REGS)) { LeaveGrowMode(GrowStackMode); return FALSE; } growth_time = Yap_cputime()-start_growth_time; LOCAL_total_stack_overflow_time += growth_time; if (gc_verbose) { fprintf(GLOBAL_stderr, "%% took %g sec\n", (double)growth_time/1000); fprintf(GLOBAL_stderr, "%% Total of %g sec expanding stacks \n", (double)LOCAL_total_stack_overflow_time/1000); } LeaveGrowMode(GrowStackMode); return TRUE; } static int do_growtrail(long size, int contiguous_only, int in_parser, tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep USES_REGS) { UInt start_growth_time = Yap_cputime(), growth_time; int gc_verbose = Yap_is_gc_verbose(); long size0 = size; #if USE_SYSTEM_MALLOC if (contiguous_only) return FALSE; #endif /* at least 64K for trail */ if (!size) size = ((ADDR)TR-LOCAL_TrailBase); size *= 2; if (size < YAP_ALLOC_SIZE) size = YAP_ALLOC_SIZE; if (size > M2) size = M2; if (size < size0) size=size0; /* adjust to a multiple of 256) */ size = AdjustPageSize(size); LOCAL_trail_overflows++; if (gc_verbose) { #if defined(YAPOR) || defined(THREADS) fprintf(GLOBAL_stderr, "%% Worker Id %d:\n", worker_id); #endif fprintf(GLOBAL_stderr, "%% Trail Overflow %d\n", LOCAL_trail_overflows); #if USE_SYSTEM_MALLOC fprintf(GLOBAL_stderr, "%% Heap: %8ld cells (%p-%p)\n", (unsigned long int)(H-(CELL *)LOCAL_GlobalBase),(CELL *)LOCAL_GlobalBase,H); fprintf(GLOBAL_stderr, "%% Local:%8ld cells (%p-%p)\n", (unsigned long int)(LCL0-ASP),LCL0,ASP); fprintf(GLOBAL_stderr, "%% Trail:%8ld cells (%p-%p)\n", (unsigned long int)(TR-(tr_fr_ptr)LOCAL_TrailBase),LOCAL_TrailBase,TR); #endif fprintf(GLOBAL_stderr, "%% growing the trail %ld bytes\n", size); } LOCAL_ErrorMessage = NULL; if (!GLOBAL_AllowTrailExpansion) { LOCAL_ErrorMessage = "Trail Overflow"; return FALSE; } #if USE_SYSTEM_MALLOC execute_growstack(size, TRUE, in_parser, old_trp, tksp, vep PASS_REGS); #else if (!Yap_ExtendWorkSpace(size)) { LOCAL_ErrorMessage = NULL; if (contiguous_only) { /* I can't expand in this case */ LOCAL_trail_overflows--; return FALSE; } execute_growstack(size, TRUE, in_parser, old_trp, tksp, vep PASS_REGS); } else { YAPEnterCriticalSection(); if (in_parser) { LOCAL_TrDiff = LOCAL_LDiff = LOCAL_GDiff = LOCAL_BaseDiff = LOCAL_DelayDiff = LOCAL_XDiff = LOCAL_HDiff = LOCAL_GDiff0 = 0; AdjustScannerStacks(tksp, vep PASS_REGS); } LOCAL_TrailTop += size; CurrentTrailTop = (tr_fr_ptr)(LOCAL_TrailTop-MinTrailGap); YAPLeaveCriticalSection(); } #endif growth_time = Yap_cputime()-start_growth_time; LOCAL_total_trail_overflow_time += growth_time; if (gc_verbose) { fprintf(GLOBAL_stderr, "%% took %g sec\n", (double)growth_time/1000); fprintf(GLOBAL_stderr, "%% Total of %g sec expanding trail \n", (double)LOCAL_total_trail_overflow_time/1000); } LOCK(LOCAL_SignalLock); if (LOCAL_ActiveSignals == YAP_TROVF_SIGNAL) { CreepFlag = CalculateStackGap(); } LOCAL_ActiveSignals &= ~YAP_TROVF_SIGNAL; UNLOCK(LOCAL_SignalLock); return TRUE; } /* Used by do_goal() when we're short of stack space */ int Yap_growtrail(long size, int contiguous_only) { CACHE_REGS return do_growtrail(size, contiguous_only, FALSE, NULL, NULL, NULL PASS_REGS); } int Yap_growtrail_in_parser(tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep) { CACHE_REGS return do_growtrail(0, FALSE, TRUE, old_trp, tksp, vep PASS_REGS); } CELL ** Yap_shift_visit(CELL **to_visit, CELL ***to_visit_maxp) { CACHE_REGS CELL **to_visit_max = *to_visit_maxp; /* relative position of top of stack */ Int off = (ADDR)to_visit-AuxBase; /* how much space the top stack was using */ Int sz = AuxTop - (ADDR)to_visit_max; /* how much space the bottom stack was using */ Int szlow = (ADDR)to_visit_max-AuxBase; /* original size for AuxSpace */ Int totalsz0 = AuxTop - AuxBase; /* totalsz0 == szlow+sz */ /* new size for AuxSpace */ Int totalsz; /* how much we grow */ Int dsz; /* totalsz == szlow+dsz+sz */ char *newb = Yap_ExpandPreAllocCodeSpace(0, NULL, FALSE); if (newb == NULL) { Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"cannot allocate temporary space for unification (%p)", to_visit); return to_visit; } /* check new size */ totalsz = AuxTop-AuxBase; /* how much we grew */ dsz = totalsz-totalsz0; if (dsz == 0) { Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"cannot allocate temporary space for unification (%p)", to_visit); return to_visit; } /* copy whole block to end */ cpcellsd((CELL *)(newb+(dsz+szlow)), (CELL *)(newb+szlow), sz/sizeof(CELL)); /* base pointer is block start */ *to_visit_maxp = (CELL **)(newb+szlow); /* current top is originall diff + diff size */ return (CELL **)(newb+(off+dsz)); } static Int p_inform_trail_overflows( USES_REGS1 ) { Term tn = MkIntTerm(LOCAL_trail_overflows); Term tt = MkIntegerTerm(LOCAL_total_trail_overflow_time); return(Yap_unify(tn, ARG1) && Yap_unify(tt, ARG2)); } /* :- grow_heap(Size) */ static Int p_growheap( USES_REGS1 ) { Int diff; Term t1 = Deref(ARG1); if (IsVarTerm(t1)) { Yap_Error(INSTANTIATION_ERROR, t1, "grow_heap/1"); return(FALSE); } else if (!IsIntTerm(t1)) { Yap_Error(TYPE_ERROR_INTEGER, t1, "grow_heap/1"); return(FALSE); } diff = IntOfTerm(t1); if (diff < 0) { Yap_Error(DOMAIN_ERROR_NOT_LESS_THAN_ZERO, t1, "grow_heap/1"); } return(static_growheap(diff, FALSE, NULL, NULL, NULL, NULL PASS_REGS)); } static Int p_inform_heap_overflows( USES_REGS1 ) { Term tn = MkIntTerm(LOCAL_heap_overflows); Term tt = MkIntegerTerm(LOCAL_total_heap_overflow_time); return(Yap_unify(tn, ARG1) && Yap_unify(tt, ARG2)); } #if defined(YAPOR_THREADS) void Yap_CopyThreadStacks(int worker_q, int worker_p, int incremental) { CACHE_REGS Int size; /* make sure both stacks have same size */ Int p_size = REMOTE_ThreadHandle(worker_p).ssize+REMOTE_ThreadHandle(worker_p).tsize; Int q_size = REMOTE_ThreadHandle(worker_q).ssize+REMOTE_ThreadHandle(worker_q).tsize; if (p_size != q_size) { if (!(REMOTE_ThreadHandle(worker_q).stack_address = realloc(REMOTE_ThreadHandle(worker_q).stack_address,p_size*K1))) { exit(1); } } REMOTE_ThreadHandle(worker_q).ssize = REMOTE_ThreadHandle(worker_p).ssize; REMOTE_ThreadHandle(worker_q).tsize = REMOTE_ThreadHandle(worker_p).tsize; /* compute offset indicators */ LOCAL_GlobalBase = REMOTE_GlobalBase(worker_p); LOCAL_LocalBase = REMOTE_LocalBase(worker_p); LOCAL_TrailBase = REMOTE_TrailBase(worker_p); LOCAL_TrailTop = REMOTE_TrailTop(worker_p); CurrentTrailTop = (tr_fr_ptr)(LOCAL_TrailTop-MinTrailGap); size = REMOTE_ThreadHandle(worker_q).stack_address-REMOTE_ThreadHandle(worker_p).stack_address; LOCAL_TrDiff = LOCAL_LDiff = LOCAL_GDiff = LOCAL_GDiff0 = LOCAL_DelayDiff = LOCAL_BaseDiff = size; LOCAL_XDiff = LOCAL_HDiff = 0; LOCAL_GSplit = NULL; H = REMOTE_ThreadHandle(worker_p).current_yaam_regs->H_; H0 = REMOTE_ThreadHandle(worker_p).current_yaam_regs->H0_; B = REMOTE_ThreadHandle(worker_p).current_yaam_regs->B_; ENV = REMOTE_ThreadHandle(worker_p).current_yaam_regs->ENV_; YENV = REMOTE_ThreadHandle(worker_p).current_yaam_regs->YENV_; ASP = REMOTE_ThreadHandle(worker_p).current_yaam_regs->ASP_; TR = REMOTE_ThreadHandle(worker_p).current_yaam_regs->TR_; if (ASP > CellPtr(B)) ASP = CellPtr(B); LCL0 = REMOTE_ThreadHandle(worker_p).current_yaam_regs->LCL0_; #ifdef CUT_C Yap_REGS.CUT_C_TOP = REMOTE_ThreadHandle(worker_p).current_yaam_regs->CUT_C_TOP; #endif LOCAL_DynamicArrays = NULL; LOCAL_StaticArrays = NULL; LOCAL_GlobalVariables = NULL; SetHeapRegs(TRUE PASS_REGS); if (incremental) { IncrementalCopyStacksFromWorker( PASS_REGS1 ); LOCAL_start_global_copy = (CELL)PtoGloAdjust((CELL *)LOCAL_start_global_copy); LOCAL_end_global_copy = (CELL)PtoGloAdjust((CELL *)LOCAL_end_global_copy); LOCAL_start_local_copy = (CELL)PtoLocAdjust((CELL *)LOCAL_start_local_copy); LOCAL_end_local_copy = (CELL)PtoLocAdjust((CELL *)LOCAL_end_local_copy); LOCAL_start_trail_copy = (CELL)PtoTRAdjust((tr_fr_ptr)LOCAL_start_trail_copy); LOCAL_end_trail_copy = (CELL)PtoTRAdjust((tr_fr_ptr)LOCAL_end_trail_copy); AdjustStacksAndTrail(0, STACK_INCREMENTAL_COPYING PASS_REGS); RestoreTrail(worker_p PASS_REGS); TR = (tr_fr_ptr) LOCAL_end_trail_copy; } else { CopyLocalAndTrail( PASS_REGS1 ); MoveGlobal( PASS_REGS1 ); AdjustStacksAndTrail(0, STACK_COPYING PASS_REGS); } } #endif /* :- grow_stack(Size) */ static Int p_growstack( USES_REGS1 ) { Int diff; Term t1 = Deref(ARG1); if (IsVarTerm(t1)) { Yap_Error(INSTANTIATION_ERROR, t1, "grow_stack/1"); return(FALSE); } else if (!IsIntTerm(t1)) { Yap_Error(TYPE_ERROR_INTEGER, t1, "grow_stack/1"); return(FALSE); } diff = IntOfTerm(t1); if (diff < 0) { Yap_Error(DOMAIN_ERROR_NOT_LESS_THAN_ZERO, t1, "grow_stack/1"); } return(growstack(diff PASS_REGS)); } static Int p_inform_stack_overflows( USES_REGS1 ) { /* */ Term tn = MkIntTerm(LOCAL_stack_overflows); Term tt = MkIntegerTerm(LOCAL_total_stack_overflow_time); return(Yap_unify(tn, ARG1) && Yap_unify(tt, ARG2)); } Int Yap_total_stack_shift_time(void) { CACHE_REGS return(LOCAL_total_heap_overflow_time+ LOCAL_total_stack_overflow_time+ LOCAL_total_trail_overflow_time); } void Yap_InitGrowPreds(void) { Yap_InitCPred("$grow_heap", 1, p_growheap, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$grow_stack", 1, p_growstack, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$inform_trail_overflows", 2, p_inform_trail_overflows, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$inform_heap_overflows", 2, p_inform_heap_overflows, SafePredFlag|HiddenPredFlag); Yap_InitCPred("$inform_stack_overflows", 2, p_inform_stack_overflows, SafePredFlag|HiddenPredFlag); Yap_init_gc(); Yap_init_agc(); }