66d14116dd
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1918 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
1614 lines
40 KiB
C
1614 lines
40 KiB
C
/*************************************************************************
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* *
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* YAP Prolog *
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
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* *
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**************************************************************************
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* *
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* File: grow.c *
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* Last rev: Thu Feb 23 1989 vv *
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* mods: *
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* comments: Shifting the stacks *
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* *
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*************************************************************************/
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#include "Yap.h"
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#include "Yatom.h"
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#include "Heap.h"
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#include "yapio.h"
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#include "alloc.h"
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#include "sshift.h"
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#include "compile.h"
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#include "attvar.h"
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#ifdef CUT_C
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#include "cut_c.h"
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#endif /* CUT_C */
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#if HAVE_STRING_H
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#include <string.h>
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#endif
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#if !HAVE_STRNCAT
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#define strncat(s0,s1,sz) strcat(s0,s1)
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#endif
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#if !COROUTINING
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#define DelayTop() H0
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#endif
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static int heap_overflows = 0;
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static Int total_heap_overflow_time = 0;
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int stack_overflows = 0;
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static Int total_stack_overflow_time = 0;
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int delay_overflows = 0;
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static Int total_delay_overflow_time = 0;
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static int trail_overflows = 0;
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static Int total_trail_overflow_time = 0;
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static int atom_table_overflows = 0;
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static Int total_atom_table_overflow_time = 0;
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STATIC_PROTO(Int p_growheap, (void));
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STATIC_PROTO(Int p_growstack, (void));
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STATIC_PROTO(Int p_inform_trail_overflows, (void));
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STATIC_PROTO(Int p_inform_heap_overflows, (void));
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STATIC_PROTO(Int p_inform_stack_overflows, (void));
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/* #define undf7 */
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/* #define undf5 */
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STATIC_PROTO(int growstack, (long));
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STATIC_PROTO(void MoveGlobal, (void));
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STATIC_PROTO(void MoveLocalAndTrail, (void));
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STATIC_PROTO(void SetHeapRegs, (void));
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STATIC_PROTO(void AdjustTrail, (int));
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STATIC_PROTO(void AdjustLocal, (void));
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STATIC_PROTO(void AdjustGlobal, (void));
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STATIC_PROTO(void AdjustGrowStack, (void));
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STATIC_PROTO(int static_growheap, (long,int,struct intermediates *,tr_fr_ptr *, TokEntry **, VarEntry **));
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STATIC_PROTO(void cpcellsd, (CELL *, CELL *, CELL));
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STATIC_PROTO(CELL AdjustAppl, (CELL));
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STATIC_PROTO(CELL AdjustPair, (CELL));
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STATIC_PROTO(void AdjustStacksAndTrail, (void));
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STATIC_PROTO(void AdjustRegs, (int));
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static void
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cpcellsd(register CELL *Dest, register CELL *Org, CELL NOf)
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{
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#if HAVE_MEMMOVE
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memmove((void *)Dest, (void *)Org, NOf*sizeof(CELL));
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#else
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register Int n_of = NOf;
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for (; n_of >= 0; n_of--)
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*Dest++ = *Org++;
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#endif
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}
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static void
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SetHeapRegs(void)
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{
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#ifdef undf7
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fprintf(Yap_stderr,"HeapBase = %x\tHeapTop=%x\nGlobalBase=%x\tGlobalTop=%x\nLocalBase=%x\tLocatTop=%x\n", Yap_HeapBase, HeapTop, Yap_GlobalBase, H, LCL0, ASP);
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#endif
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/* The old stack pointers */
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OldLCL0 = LCL0;
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OldASP = ASP;
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OldGlobalBase = (CELL *)Yap_GlobalBase;
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OldH = H;
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OldH0 = H0;
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OldTrailBase = Yap_TrailBase;
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OldTrailTop = Yap_TrailTop;
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OldTR = TR;
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OldHeapBase = Yap_HeapBase;
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OldHeapTop = HeapTop;
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/* Adjust stack addresses */
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Yap_TrailBase = TrailAddrAdjust(Yap_TrailBase);
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Yap_TrailTop = TrailAddrAdjust(Yap_TrailTop);
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Yap_GlobalBase = DelayAddrAdjust(Yap_GlobalBase);
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Yap_LocalBase = LocalAddrAdjust(Yap_LocalBase);
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#if !USE_SYSTEM_MALLOC && !USE_DL_MALLOC
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AuxSp = PtoDelayAdjust(AuxSp);
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AuxTop = (ADDR)PtoDelayAdjust((CELL *)AuxTop);
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#endif
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#if !USE_SYSTEM_MALLOC
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if (HeapLim)
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HeapLim = DelayAddrAdjust(HeapLim);
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#endif
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/* The registers pointing to one of the stacks */
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if (ENV)
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ENV = PtoLocAdjust(ENV);
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if (ASP)
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ASP = PtoLocAdjust(ASP);
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if (H0)
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H0 = PtoGloAdjust(H0);
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if (LCL0)
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LCL0 = PtoLocAdjust(LCL0);
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if (H)
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H = PtoGloAdjust(H);
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if (HB)
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HB = PtoGloAdjust(HB);
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if (B)
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B = ChoicePtrAdjust(B);
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#ifdef CUT_C
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if (Yap_REGS.CUT_C_TOP)
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Yap_REGS.CUT_C_TOP = (cut_c_str_ptr)ChoicePtrAdjust((choiceptr)Yap_REGS.CUT_C_TOP);
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#endif
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#ifdef TABLING
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if (B_FZ)
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B_FZ = ChoicePtrAdjust(B_FZ);
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if (BB)
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BB = ChoicePtrAdjust(BB);
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if (H_FZ)
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H_FZ = PtoGloAdjust(H_FZ);
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if (TR_FZ)
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TR_FZ = PtoTRAdjust(TR_FZ);
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#endif /* TABLING */
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if (TR)
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TR = PtoTRAdjust(TR);
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if (YENV)
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YENV = PtoLocAdjust(YENV);
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if (IsOldGlobalPtr(S))
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S = PtoGloAdjust(S);
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else if (IsOldLocalPtr(S))
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S = PtoLocAdjust(S);
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if (GlobalArena)
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GlobalArena = AbsAppl(PtoGloAdjust(RepAppl(GlobalArena)));
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if (GlobalDelayArena)
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GlobalDelayArena = GlobalAdjust(GlobalDelayArena);
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#ifdef COROUTINING
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if (DelayedVars)
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DelayedVars = AbsAppl(PtoGloAdjust(RepAppl(DelayedVars)));
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if (AttsMutableList)
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AttsMutableList = AbsAppl(PtoGloAdjust(RepAppl(AttsMutableList)));
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if (WokenGoals)
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WokenGoals = AbsAppl(PtoGloAdjust(RepAppl(WokenGoals)));
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#endif
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GcGeneration = AbsAppl(PtoGloAdjust(RepAppl(GcGeneration)));
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GcPhase = AbsAppl(PtoGloAdjust(RepAppl(GcPhase)));
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}
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static void
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MoveLocalAndTrail(void)
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{
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/* cpcellsd(To,From,NOfCells) - copy the cells downwards */
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#if USE_SYSTEM_MALLOC
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cpcellsd(ASP, (CELL *)((char *)OldASP+DelayDiff), (CELL *)OldTR - OldASP);
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#else
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cpcellsd(ASP, OldASP, (CELL *)OldTR - OldASP);
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#endif
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}
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static void
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MoveGlobal(void)
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{
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/*
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* cpcellsd(To,From,NOfCells) - copy the cells downwards - in
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* absmi.asm
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*/
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cpcellsd((CELL *)Yap_GlobalBase, (CELL *)OldGlobalBase, OldH - (CELL *)OldGlobalBase);
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}
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static void
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MoveExpandedGlobal(void)
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{
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/*
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* cpcellsd(To,From,NOfCells) - copy the cells downwards - in
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* absmi.asm
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*/
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cpcellsd((CELL *)(Yap_GlobalBase+(GDiff-DelayDiff)), (CELL *)Yap_GlobalBase, OldH - (CELL *)OldGlobalBase);
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}
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static void
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MoveGlobalWithHole(void)
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{
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/*
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* cpcellsd(To,From,NOfCells) - copy the cells downwards - in
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* absmi.asm
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*/
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#if USE_SYSTEM_MALLOC
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cpcellsd((CELL *)((char *)Yap_GlobalBase+(GDiff0-DelayDiff)), (CELL *)Yap_GlobalBase, OldH - (CELL *)OldGlobalBase);
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#else
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cpcellsd((CELL *)((char *)OldGlobalBase+GDiff0), (CELL *)OldGlobalBase, OldH - (CELL *)OldGlobalBase);
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#endif
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}
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static void
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MoveHalfGlobal(CELL *OldPt)
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{
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/*
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* cpcellsd(To,From,NOfCells) - copy the cells downwards - in
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* absmi.asm
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*/
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UInt diff = OldH-OldPt;
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CELL *NewPt = (CELL *)((char*)OldPt+GDiff);
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CELL *IntPt = (CELL *)((char*)OldPt+GDiff0);
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cpcellsd(NewPt, IntPt, diff);
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}
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static inline CELL
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AdjustAppl(register CELL t0)
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{
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register CELL *t = RepAppl(t0);
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if (IsOldGlobalPtr(t))
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return (AbsAppl(PtoGloAdjust(t)));
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else if (IsOldTrailPtr(t))
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return (AbsAppl(CellPtoTRAdjust(t)));
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else if (IsHeapP(t))
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return (AbsAppl(CellPtoHeapAdjust(t)));
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#ifdef DEBUG
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else {
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/* strange cell */
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/* fprintf(Yap_stderr,"% garbage appl %lx found in stacks by stack shifter\n", t0);*/
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}
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#endif
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return(t0);
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}
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static inline CELL
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AdjustPair(register CELL t0)
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{
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register CELL *t = RepPair(t0);
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if (IsOldGlobalPtr(t))
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return (AbsPair(PtoGloAdjust(t)));
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if (IsOldTrailPtr(t))
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return (AbsPair(CellPtoTRAdjust(t)));
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else if (IsHeapP(t))
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return (AbsPair(CellPtoHeapAdjust(t)));
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#ifdef DEBUG
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/* fprintf(Yap_stderr,"% garbage pair %lx found in stacks by stack shifter\n", t0);*/
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#endif
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return(t0);
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}
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static void
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AdjustTrail(int adjusting_heap)
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{
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register tr_fr_ptr ptt;
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ptt = TR;
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/* moving the trail is simple */
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while (ptt != (tr_fr_ptr)Yap_TrailBase) {
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register CELL reg = TrailTerm(ptt-1);
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#ifdef FROZEN_STACKS
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register CELL reg2 = TrailVal(ptt-1);
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#endif
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ptt--;
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if (IsVarTerm(reg)) {
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if (IsOldLocalInTR(reg))
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TrailTerm(ptt) = LocalAdjust(reg);
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else if (IsOldGlobal(reg))
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TrailTerm(ptt) = GlobalAdjust(reg);
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else if (IsOldTrail(reg))
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TrailTerm(ptt) = TrailAdjust(reg);
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} else if (IsPairTerm(reg)) {
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TrailTerm(ptt) = AdjustPair(reg);
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#ifdef MULTI_ASSIGNMENT_VARIABLES /* does not work with new structures */
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/* check it whether we are protecting a
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multi-assignment */
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} else if (IsApplTerm(reg)) {
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TrailTerm(ptt) = AdjustAppl(reg);
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#endif
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}
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#ifdef FROZEN_STACKS
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if (IsVarTerm(reg2)) {
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if (IsOldLocal(reg2))
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TrailVal(ptt) = LocalAdjust(reg2);
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else if (IsOldGlobal(reg2))
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TrailVal(ptt) = GlobalAdjust(reg2);
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else if (IsOldTrail(reg2))
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TrailVal(ptt) = TrailAdjust(reg2);
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} else if (IsApplTerm(reg2)) {
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TrailVal(ptt) = AdjustAppl(reg2);
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} else if (IsPairTerm(reg2)) {
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TrailVal(ptt) = AdjustPair(reg2);
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}
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#endif
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}
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}
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static void
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AdjustLocal(void)
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{
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register CELL reg, *pt;
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/* Adjusting the local */
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pt = LCL0;
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while (pt > ASP) {
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reg = *--pt;
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if (IsVarTerm(reg)) {
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if (IsOldLocal(reg))
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*pt = LocalAdjust(reg);
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else if (IsOldGlobal(reg))
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*pt = GlobalAdjust(reg);
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else if (IsOldTrail(reg))
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*pt = TrailAdjust(reg);
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else if (IsOldCode(reg))
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*pt = CodeAdjust(reg);
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} else if (IsApplTerm(reg)) {
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*pt = AdjustAppl(reg);
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} else if (IsPairTerm(reg)) {
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*pt = AdjustPair(reg);
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}
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}
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}
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static Term
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AdjustGlobTerm(Term reg)
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{
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if (IsVarTerm(reg)) {
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if (IsOldGlobal(reg))
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return GlobalAdjust(reg);
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else if (IsOldLocal(reg))
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return LocalAdjust(reg);
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#ifdef MULTI_ASSIGNMENT_VARIABLES
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else if (IsOldTrail(reg))
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return TrailAdjust(reg);
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#endif
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} else if (IsApplTerm(reg))
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return AdjustAppl(reg);
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else if (IsPairTerm(reg))
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return AdjustPair(reg);
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return AtomTermAdjust(reg);
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}
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static void
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AdjustGlobal(void)
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{
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CELL *pt;
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ArrayEntry *al = DynamicArrays;
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StaticArrayEntry *sal = StaticArrays;
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GlobalEntry *gl = GlobalVariables;
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while (al) {
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al->ValueOfVE = AdjustGlobTerm(al->ValueOfVE);
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al = al->NextAE;
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}
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while (gl) {
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if (IsVarTerm(gl->global) ||
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!IsAtomOrIntTerm(gl->global)) {
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gl->global = AdjustGlobTerm(gl->global);
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}
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gl = gl->NextGE;
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}
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while (sal) {
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if (sal->ArrayType == array_of_nb_terms) {
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UInt arity = -sal->ArrayEArity, i;
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for (i=0; i < arity; i++) {
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/* sal->ValueOfVE.lterms[i].tlive = AdjustGlobTerm(sal->ValueOfVE.lterms[i].tlive); */
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Term tlive = sal->ValueOfVE.lterms[i].tlive;
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if (!IsVarTerm(tlive) || !IsUnboundVar(&sal->ValueOfVE.lterms[i].tlive)) {
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sal->ValueOfVE.lterms[i].tlive = AdjustGlobTerm(sal->ValueOfVE.lterms[i].tlive);
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}
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}
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}
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sal = sal->NextAE;
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}
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/*
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* to clean the global now that functors are just variables pointing to
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* the code
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*/
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pt = CellPtr(Yap_GlobalBase);
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while (pt < H) {
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CELL reg;
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reg = *pt;
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if (IsVarTerm(reg)) {
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if (IsOldGlobal(reg))
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*pt = GlobalAdjust(reg);
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else if (IsOldLocal(reg))
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*pt = LocalAdjust(reg);
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else if (IsOldCode(reg)) {
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Functor f;
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f = (Functor)(*pt = CodeAdjust(reg));
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if (f <= FunctorDouble && f >= FunctorLongInt) {
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/* skip bitmaps */
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switch((CELL)f) {
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case (CELL)FunctorDouble:
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#if SIZEOF_DOUBLE == 2*SIZEOF_LONG_INT
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pt += 3;
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#else
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pt += 2;
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#endif
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break;
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#if USE_GMP
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case (CELL)FunctorBigInt:
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{
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Int sz = 1+
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sizeof(MP_INT)+
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(((MP_INT *)(pt+1))->_mp_alloc*sizeof(mp_limb_t));
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pt += sz;
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}
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break;
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#endif
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case (CELL)FunctorLongInt:
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default:
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pt += 2;
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break;
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}
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}
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}
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#ifdef MULTI_ASSIGNMENT_VARIABLES
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else if (IsOldTrail(reg))
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*pt = TrailAdjust(reg);
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#endif
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} else if (IsApplTerm(reg))
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*pt = AdjustAppl(reg);
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else if (IsPairTerm(reg))
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*pt = AdjustPair(reg);
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else if (IsAtomTerm(reg))
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*pt = AtomTermAdjust(reg);
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pt++;
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}
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}
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/*
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* When growing the stack we need to adjust: the local stack cells pointing
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* to the local; the local stack cells and the X terms pointing to the global
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* (just once) the trail cells pointing both to the global and to the local
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*/
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static void
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AdjustStacksAndTrail(void)
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{
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AdjustTrail(TRUE);
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AdjustLocal();
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AdjustGlobal();
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}
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void
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Yap_AdjustStacksAndTrail(void)
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{
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AdjustStacksAndTrail();
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}
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/*
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* When growing the stack we need to adjust: the local cells pointing to the
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* local; the trail cells pointing to the local
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*/
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static void
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AdjustGrowStack(void)
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{
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AdjustTrail(FALSE);
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AdjustLocal();
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}
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static void
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AdjustRegs(int n)
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{
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int i;
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CELL reg;
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for (i = 1; i < n; ++i) {
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reg = (CELL) XREGS[i];
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if (IsVarTerm(reg)) {
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if (IsOldLocal(reg))
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reg = LocalAdjust(reg);
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else if (IsOldGlobal(reg))
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reg = GlobalAdjust(reg);
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else if (IsOldTrail(reg))
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reg = TrailAdjust(reg);
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else if (IsOldCode(reg))
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reg = CodeAdjust(reg);
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} else if (IsApplTerm(reg))
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reg = AdjustAppl(reg);
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else if (IsPairTerm(reg))
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reg = AdjustPair(reg);
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XREGS[i] = (Term) reg;
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}
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}
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static void
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AdjustVarTable(VarEntry *ves)
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{
|
|
ves->VarAdr = TermNil;
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|
if (ves->VarRight != NULL) {
|
|
if (IsOldVarTableTrailPtr(ves->VarRight)) {
|
|
ves->VarRight = (VarEntry *)TrailAddrAdjust((ADDR)(ves->VarRight));
|
|
}
|
|
AdjustVarTable(ves->VarRight);
|
|
}
|
|
if (ves->VarLeft != NULL) {
|
|
if (IsOldVarTableTrailPtr(ves->VarLeft)) {
|
|
ves->VarLeft = (VarEntry *)TrailAddrAdjust((ADDR)(ves->VarLeft));
|
|
}
|
|
AdjustVarTable(ves->VarLeft);
|
|
}
|
|
}
|
|
|
|
/*
|
|
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)
|
|
{
|
|
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);
|
|
}
|
|
ves = Yap_AnonVarTable;
|
|
if (ves != NULL) {
|
|
if (IsOldVarTableTrailPtr(ves))
|
|
ves = Yap_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)
|
|
{
|
|
AdjustRegs(n);
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
UInt start_growth_time, growth_time;
|
|
int gc_verbose;
|
|
UInt minimal_request = 0L;
|
|
|
|
/* adjust to a multiple of 256) */
|
|
size = AdjustPageSize(size);
|
|
Yap_ErrorMessage = NULL;
|
|
if (!Yap_ExtendWorkSpace(size)) {
|
|
Int min_size = AdjustPageSize(((CELL)Yap_TrailTop-(CELL)Yap_GlobalBase)+MinHeapGap);
|
|
|
|
Yap_ErrorMessage = NULL;
|
|
if (size < min_size) size = min_size;
|
|
minimal_request = size;
|
|
size = Yap_ExtendWorkSpaceThroughHole(size);
|
|
if (size < 0) {
|
|
Yap_ErrorMessage = "Database crashed against Stacks";
|
|
return FALSE;
|
|
}
|
|
}
|
|
start_growth_time = Yap_cputime();
|
|
gc_verbose = Yap_is_gc_verbose();
|
|
heap_overflows++;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% Database overflow %d\n", heap_overflows);
|
|
fprintf(Yap_stderr, "%% growing the heap %ld bytes\n", size);
|
|
}
|
|
/* CreepFlag is set to force heap expansion */
|
|
if (ActiveSignals == YAP_CDOVF_SIGNAL) {
|
|
LOCK(SignalLock);
|
|
CreepFlag = CalculateStackGap();
|
|
UNLOCK(SignalLock);
|
|
}
|
|
ASP -= 256;
|
|
YAPEnterCriticalSection();
|
|
TrDiff = LDiff = GDiff = DelayDiff = size;
|
|
XDiff = HDiff = GDiff0 = 0;
|
|
GSplit = NULL;
|
|
SetHeapRegs();
|
|
MoveLocalAndTrail();
|
|
if (fix_code) {
|
|
CELL *SaveOldH = OldH;
|
|
OldH = (CELL *)cip->freep;
|
|
MoveGlobal();
|
|
OldH = SaveOldH;
|
|
} else {
|
|
MoveGlobal();
|
|
}
|
|
if (old_trp) {
|
|
tr_fr_ptr nTR;
|
|
|
|
AdjustScannerStacks(tksp, vep);
|
|
nTR = TR;
|
|
*old_trp = PtoTRAdjust(*old_trp);
|
|
TR = *old_trp;
|
|
AdjustStacksAndTrail();
|
|
TR = nTR;
|
|
} else {
|
|
AdjustStacksAndTrail();
|
|
}
|
|
AdjustRegs(MaxTemps);
|
|
YAPLeaveCriticalSection();
|
|
ASP += 256;
|
|
if (minimal_request)
|
|
Yap_AllocHole(minimal_request, size);
|
|
growth_time = Yap_cputime()-start_growth_time;
|
|
total_heap_overflow_time += growth_time;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% took %g sec\n", (double)growth_time/1000);
|
|
fprintf(Yap_stderr, "%% Total of %g sec expanding Database\n", (double)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 size, CELL **ptr, CELL *hsplit)
|
|
{
|
|
UInt start_growth_time, growth_time;
|
|
int gc_verbose;
|
|
char *omax = (ADDR)DelayTop();
|
|
ADDR old_GlobalBase = Yap_GlobalBase;
|
|
UInt minimal_request = 0L;
|
|
long size0, sz = size;
|
|
char vb_msg1 = '\0', *vb_msg2;
|
|
int do_grow = TRUE;
|
|
|
|
if (hsplit) {
|
|
/* just a little bit of sanity checking */
|
|
if (hsplit < (CELL*)omax ||
|
|
hsplit > H)
|
|
return FALSE;
|
|
else if (hsplit == (CELL *)omax)
|
|
hsplit = NULL;
|
|
if (size+H < ASP-4096 &&
|
|
hsplit > H0) {
|
|
/* don't need to expand stacks */
|
|
do_grow = FALSE;
|
|
}
|
|
}
|
|
size0 = size;
|
|
if (size < ((char *)H0-omax)/8)
|
|
size = ((char *)H0-omax)/8;
|
|
if (do_grow) {
|
|
size = AdjustPageSize(size);
|
|
}
|
|
/* adjust to a multiple of 256) */
|
|
Yap_ErrorMessage = NULL;
|
|
Yap_PrologMode |= GrowStackMode;
|
|
start_growth_time = Yap_cputime();
|
|
if (do_grow) {
|
|
if (!Yap_ExtendWorkSpace(size)) {
|
|
/* always fails when using malloc */
|
|
Yap_ErrorMessage = NULL;
|
|
size += AdjustPageSize(((CELL)Yap_TrailTop-(CELL)Yap_GlobalBase)+MinHeapGap);
|
|
minimal_request = size;
|
|
size = Yap_ExtendWorkSpaceThroughHole(size);
|
|
if (size < 0) {
|
|
Yap_ErrorMessage = "Global Stack crashed against Local Stack";
|
|
Yap_PrologMode &= ~GrowStackMode;
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
gc_verbose = Yap_is_gc_verbose();
|
|
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";
|
|
}
|
|
fprintf(Yap_stderr, "%% %cO %s overflow %d\n", vb_msg1, vb_msg2, delay_overflows);
|
|
fprintf(Yap_stderr, "%% %cO growing the stacks %ld bytes\n", vb_msg1, size);
|
|
}
|
|
ASP -= 256;
|
|
YAPEnterCriticalSection();
|
|
#if USE_SYSTEM_MALLOC
|
|
/* we always run the risk of shifting memory */
|
|
size0 = Yap_GlobalBase-old_GlobalBase;
|
|
if (do_grow) {
|
|
DelayDiff = size0;
|
|
TrDiff = LDiff = GDiff = size+size0;
|
|
} else {
|
|
TrDiff = DelayDiff = LDiff = 0;
|
|
GDiff = size;
|
|
}
|
|
GDiff0 = DelayDiff;
|
|
if (hsplit) {
|
|
GDiff = GDiff0+sz;
|
|
GSplit = hsplit;
|
|
} else {
|
|
GSplit = NULL;
|
|
}
|
|
#else
|
|
if (!do_grow) {
|
|
TrDiff = DelayDiff = LDiff = 0;
|
|
/* don't grow more than what we asked for */
|
|
GDiff = size-(size0-sz);
|
|
} else if (minimal_request) {
|
|
DelayDiff = size-size0;
|
|
TrDiff = LDiff = GDiff = size;
|
|
} else {
|
|
TrDiff = LDiff = GDiff = size;
|
|
DelayDiff = 0;
|
|
}
|
|
if (hsplit) {
|
|
GDiff0 = GDiff-size0;
|
|
GSplit = hsplit;
|
|
} else {
|
|
GDiff0 = DelayDiff;
|
|
GSplit = NULL;
|
|
}
|
|
#endif
|
|
XDiff = HDiff = 0;
|
|
Yap_GlobalBase = old_GlobalBase;
|
|
SetHeapRegs();
|
|
if (do_grow) {
|
|
MoveLocalAndTrail();
|
|
if (hsplit) {
|
|
MoveGlobalWithHole();
|
|
} else {
|
|
MoveExpandedGlobal();
|
|
}
|
|
}
|
|
AdjustStacksAndTrail();
|
|
AdjustRegs(MaxTemps);
|
|
if (ptr) {
|
|
*ptr = PtoLocAdjust(*ptr);
|
|
}
|
|
if (hsplit) {
|
|
MoveHalfGlobal(hsplit);
|
|
}
|
|
YAPLeaveCriticalSection();
|
|
ASP += 256;
|
|
if (minimal_request) {
|
|
Yap_AllocHole(minimal_request, size);
|
|
}
|
|
growth_time = Yap_cputime()-start_growth_time;
|
|
total_delay_overflow_time += growth_time;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% %cO took %g sec\n", vb_msg1, (double)growth_time/1000);
|
|
fprintf(Yap_stderr, "%% %cO Total of %g sec expanding stacks \n", vb_msg1, (double)total_delay_overflow_time/1000);
|
|
}
|
|
Yap_PrologMode &= ~GrowStackMode;
|
|
if (hsplit)
|
|
return GDiff-GDiff0;
|
|
else
|
|
return GDiff-DelayDiff;
|
|
}
|
|
|
|
static void
|
|
fix_compiler_instructions(PInstr *pcpc)
|
|
{
|
|
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);
|
|
break;
|
|
/* hopefully nothing to do */
|
|
case nop_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_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 write_bigint_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 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 if_nonvar_op:
|
|
case commit_opt_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:
|
|
#ifdef TABLING
|
|
case table_new_answer_op:
|
|
case table_try_single_op:
|
|
#endif /* TABLING */
|
|
#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(void)
|
|
{
|
|
/* 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));
|
|
DepFr_leader_cp(df) = ChoicePtrAdjust(DepFr_leader_cp(df));
|
|
DepFr_cons_cp(df) = ConsumerChoicePtrAdjust(DepFr_cons_cp(df));
|
|
df = DepFr_next(df);
|
|
}
|
|
sg = LOCAL_top_sg_fr;
|
|
while (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)
|
|
{
|
|
unsigned long size = sizeof(CELL) * 16 * 1024L;
|
|
int shift_factor = (heap_overflows > 8 ? 8 : heap_overflows);
|
|
unsigned long sz = size << shift_factor;
|
|
|
|
if (sz < in_size) {
|
|
sz = in_size;
|
|
}
|
|
#if YAPOR
|
|
Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"cannot grow Heap: more than a worker/thread running");
|
|
return FALSE;
|
|
#endif
|
|
if (SizeOfOverflow > sz)
|
|
sz = AdjustPageSize(SizeOfOverflow);
|
|
while(sz >= sizeof(CELL) * 16 * 1024L && !static_growheap(sz, fix_code, cip, old_trp, tksp, vep)) {
|
|
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);
|
|
pcpc = cip->BlobsStart;
|
|
if (pcpc != NULL) {
|
|
cip->BlobsStart = pcpc = (PInstr *)GlobalAddrAdjust((ADDR)pcpc);
|
|
}
|
|
fix_compiler_instructions(pcpc);
|
|
cip->freep = (char *)GlobalAddrAdjust((ADDR)cip->freep);
|
|
cip->label_offset = (int *)GlobalAddrAdjust((ADDR)cip->label_offset);
|
|
}
|
|
#ifdef TABLING
|
|
fix_tabling_info();
|
|
#endif /* TABLING */
|
|
if (sz >= sizeof(CELL) * 16 * 1024L) {
|
|
LOCK(SignalLock);
|
|
ActiveSignals &= ~YAP_CDOVF_SIGNAL;
|
|
if (!ActiveSignals)
|
|
CreepFlag = CalculateStackGap();
|
|
UNLOCK(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(void)
|
|
{
|
|
AtomHashEntry *ntb;
|
|
UInt nsize = 4*AtomHashTableSize-1;
|
|
UInt start_growth_time = Yap_cputime(), growth_time;
|
|
int gc_verbose = Yap_is_gc_verbose();
|
|
|
|
LOCK(SignalLock);
|
|
if (ActiveSignals == YAP_CDOVF_SIGNAL) {
|
|
CreepFlag = CalculateStackGap();
|
|
}
|
|
ActiveSignals &= ~YAP_CDOVF_SIGNAL;
|
|
UNLOCK(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;
|
|
}
|
|
atom_table_overflows++;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% Atom Table overflow %d\n", atom_table_overflows);
|
|
fprintf(Yap_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;
|
|
total_atom_table_overflow_time += growth_time;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% took %g sec\n", (double)growth_time/1000);
|
|
fprintf(Yap_stderr, "%% Total of %g sec expanding atom table \n", (double)total_atom_table_overflow_time/1000);
|
|
}
|
|
#if USE_SYSTEM_MALLOC
|
|
return TRUE;
|
|
#else
|
|
if (HeapTop + sizeof(YAP_SEG_SIZE) < HeapLim) {
|
|
/* make sure there is no heap overflow */
|
|
int res;
|
|
YAPEnterCriticalSection();
|
|
res = do_growheap(FALSE, 0, NULL, NULL, NULL, NULL);
|
|
YAPLeaveCriticalSection();
|
|
return res;
|
|
} else {
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
int
|
|
Yap_growheap(int fix_code, UInt in_size, void *cip)
|
|
{
|
|
int res;
|
|
|
|
if (NOfAtoms > 2*AtomHashTableSize) {
|
|
UInt n = NOfAtoms;
|
|
if (AGcThreshold)
|
|
Yap_atom_gc();
|
|
/* check if we have a significant improvement from agc */
|
|
if (n > NOfAtoms+ NOfAtoms/10 ||
|
|
NOfAtoms > 2*AtomHashTableSize) {
|
|
res = growatomtable();
|
|
} else {
|
|
LOCK(SignalLock);
|
|
if (ActiveSignals == YAP_CDOVF_SIGNAL) {
|
|
CreepFlag = CalculateStackGap();
|
|
}
|
|
ActiveSignals &= ~YAP_CDOVF_SIGNAL;
|
|
UNLOCK(SignalLock);
|
|
return TRUE;
|
|
}
|
|
Yap_PrologMode &= ~GrowHeapMode;
|
|
return res;
|
|
}
|
|
res=do_growheap(fix_code, in_size, (struct intermediates *)cip, NULL, NULL, NULL);
|
|
Yap_PrologMode &= ~GrowHeapMode;
|
|
return res;
|
|
}
|
|
|
|
int
|
|
Yap_growheap_in_parser(tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep)
|
|
{
|
|
int res;
|
|
|
|
res=do_growheap(FALSE, 0L, NULL, old_trp, tksp, vep);
|
|
Yap_PrologMode &= ~GrowHeapMode;
|
|
return res;
|
|
}
|
|
|
|
int
|
|
Yap_growglobal(CELL **ptr)
|
|
{
|
|
unsigned long sz = sizeof(CELL) * 16 * 1024L;
|
|
|
|
#if YAPOR
|
|
if (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) == 0)
|
|
return FALSE;
|
|
#ifdef TABLING
|
|
fix_tabling_info();
|
|
#endif /* TABLING */
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
UInt
|
|
Yap_InsertInGlobal(CELL *where, UInt howmuch)
|
|
{
|
|
if ((howmuch = static_growglobal(howmuch, NULL, where)) == 0)
|
|
return 0;
|
|
#ifdef TABLING
|
|
fix_tabling_info();
|
|
#endif /* TABLING */
|
|
return howmuch;
|
|
}
|
|
|
|
|
|
int
|
|
Yap_growstack(long size)
|
|
{
|
|
int res;
|
|
|
|
Yap_PrologMode |= GrowStackMode;
|
|
res=growstack(size);
|
|
Yap_PrologMode &= ~GrowStackMode;
|
|
return res;
|
|
}
|
|
|
|
static int
|
|
execute_growstack(long size0, int from_trail, int in_parser, tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep)
|
|
{
|
|
UInt minimal_request = 0L;
|
|
long size = size0;
|
|
ADDR old_Yap_GlobalBase = Yap_GlobalBase;
|
|
|
|
if (!Yap_ExtendWorkSpace(size)) {
|
|
/* make sure stacks and trail are contiguous */
|
|
|
|
Yap_ErrorMessage = NULL;
|
|
minimal_request = AdjustPageSize(((CELL)Yap_TrailTop-(CELL)Yap_GlobalBase)+4*MinHeapGap+size0);
|
|
|
|
size = Yap_ExtendWorkSpaceThroughHole(minimal_request);
|
|
if (size < 0) {
|
|
Yap_ErrorMessage = "Database crashed against stacks";
|
|
return FALSE;
|
|
}
|
|
YAPEnterCriticalSection();
|
|
GDiff = DelayDiff = size-size0;
|
|
} else {
|
|
YAPEnterCriticalSection();
|
|
if (Yap_GlobalBase != old_Yap_GlobalBase) {
|
|
GDiff = DelayDiff = Yap_GlobalBase-old_Yap_GlobalBase;
|
|
Yap_GlobalBase=old_Yap_GlobalBase;
|
|
} else {
|
|
GDiff = DelayDiff = 0;
|
|
}
|
|
}
|
|
XDiff = HDiff = 0;
|
|
GDiff0=0;
|
|
#if USE_SYSTEM_MALLOC
|
|
if (from_trail) {
|
|
TrDiff = LDiff = GDiff;
|
|
} else {
|
|
TrDiff = LDiff = size+GDiff;
|
|
}
|
|
#else
|
|
if (from_trail) {
|
|
TrDiff = LDiff = size-size0;
|
|
} else {
|
|
TrDiff = LDiff = size;
|
|
}
|
|
#endif
|
|
ASP -= 256;
|
|
SetHeapRegs();
|
|
if (from_trail) {
|
|
Yap_TrailTop += size0;
|
|
}
|
|
if (LDiff) {
|
|
MoveLocalAndTrail();
|
|
}
|
|
if (GDiff) {
|
|
#if !USE_SYSTEM_MALLOC
|
|
/* That is done by realloc */
|
|
MoveGlobal();
|
|
#endif
|
|
if (in_parser) {
|
|
tr_fr_ptr nTR;
|
|
|
|
AdjustScannerStacks(tksp, vep);
|
|
nTR = TR;
|
|
*old_trp = PtoTRAdjust(*old_trp);
|
|
TR = *old_trp;
|
|
AdjustStacksAndTrail();
|
|
TR = nTR;
|
|
} else {
|
|
AdjustStacksAndTrail();
|
|
}
|
|
AdjustRegs(MaxTemps);
|
|
#ifdef TABLING
|
|
fix_tabling_info();
|
|
#endif /* TABLING */
|
|
} else if (LDiff) {
|
|
if (in_parser) {
|
|
tr_fr_ptr nTR;
|
|
|
|
AdjustScannerStacks(tksp, vep);
|
|
nTR = TR;
|
|
*old_trp = PtoTRAdjust(*old_trp);
|
|
TR = *old_trp;
|
|
AdjustGrowStack();
|
|
TR = nTR;
|
|
} else {
|
|
AdjustGrowStack();
|
|
}
|
|
AdjustRegs(MaxTemps);
|
|
#ifdef TABLING
|
|
fix_tabling_info();
|
|
#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)
|
|
{
|
|
UInt start_growth_time, growth_time;
|
|
int gc_verbose;
|
|
|
|
/* adjust to a multiple of 256) */
|
|
size = AdjustPageSize(size);
|
|
Yap_ErrorMessage = NULL;
|
|
start_growth_time = Yap_cputime();
|
|
gc_verbose = Yap_is_gc_verbose();
|
|
stack_overflows++;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% Stack Overflow %d\n", stack_overflows);
|
|
fprintf(Yap_stderr, "%% Global: %8ld cells (%p-%p)\n", (unsigned long int)(H-(CELL *)Yap_GlobalBase),Yap_GlobalBase,H);
|
|
fprintf(Yap_stderr, "%% Local:%8ld cells (%p-%p)\n", (unsigned long int)(LCL0-ASP),LCL0,ASP);
|
|
fprintf(Yap_stderr, "%% Trail:%8ld cells (%p-%p)\n",
|
|
(unsigned long int)(TR-(tr_fr_ptr)Yap_TrailBase),Yap_TrailBase,TR);
|
|
fprintf(Yap_stderr, "%% Growing the stacks %ld bytes\n", size);
|
|
}
|
|
if (!execute_growstack(size, FALSE, FALSE, NULL, NULL, NULL))
|
|
return FALSE;
|
|
growth_time = Yap_cputime()-start_growth_time;
|
|
total_stack_overflow_time += growth_time;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% took %g sec\n", (double)growth_time/1000);
|
|
fprintf(Yap_stderr, "%% Total of %g sec expanding stacks \n", (double)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)
|
|
{
|
|
UInt size;
|
|
UInt start_growth_time, growth_time;
|
|
int gc_verbose;
|
|
|
|
Yap_PrologMode |= GrowStackMode;
|
|
/* adjust to a multiple of 256) */
|
|
size = AdjustPageSize((ADDR)LCL0-Yap_GlobalBase);
|
|
Yap_ErrorMessage = NULL;
|
|
start_growth_time = Yap_cputime();
|
|
gc_verbose = Yap_is_gc_verbose();
|
|
stack_overflows++;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% Stack Overflow %d\n", stack_overflows);
|
|
fprintf(Yap_stderr, "%% Global: %8ld cells (%p-%p)\n", (unsigned long int)(H-(CELL *)Yap_GlobalBase),Yap_GlobalBase,H);
|
|
fprintf(Yap_stderr, "%% Local:%8ld cells (%p-%p)\n", (unsigned long int)(LCL0-ASP),LCL0,ASP);
|
|
fprintf(Yap_stderr, "%% Trail:%8ld cells (%p-%p)\n",
|
|
(unsigned long int)(TR-(tr_fr_ptr)Yap_TrailBase),Yap_TrailBase,TR);
|
|
fprintf(Yap_stderr, "%% Growing the stacks %ld bytes\n", (unsigned long int)size);
|
|
}
|
|
if (!execute_growstack(size, FALSE, TRUE, old_trp, tksp, vep)) {
|
|
Yap_PrologMode &= ~GrowStackMode;
|
|
return FALSE;
|
|
}
|
|
growth_time = Yap_cputime()-start_growth_time;
|
|
total_stack_overflow_time += growth_time;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% took %g sec\n", (double)growth_time/1000);
|
|
fprintf(Yap_stderr, "%% Total of %g sec expanding stacks \n", (double)total_stack_overflow_time/1000);
|
|
}
|
|
Yap_PrologMode &= ~GrowStackMode;
|
|
return TRUE;
|
|
}
|
|
|
|
static int do_growtrail(long size, int contiguous_only, int in_parser, tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep)
|
|
{
|
|
UInt start_growth_time = Yap_cputime(), growth_time;
|
|
int gc_verbose = Yap_is_gc_verbose();
|
|
|
|
#if USE_SYSTEM_MALLOC
|
|
if (contiguous_only)
|
|
return FALSE;
|
|
#endif
|
|
/* at least 64K for trail */
|
|
if (!size)
|
|
size = ((ADDR)TR-Yap_TrailBase);
|
|
size *= 2;
|
|
if (size < 64*1024)
|
|
size = 64*1024;
|
|
if (size > 2048*1024)
|
|
size = 2048*1024;
|
|
/* adjust to a multiple of 256) */
|
|
size = AdjustPageSize(size);
|
|
trail_overflows++;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% Trail overflow %d\n", trail_overflows);
|
|
#if USE_SYSTEM_MALLOC
|
|
fprintf(Yap_stderr, "%% Heap: %8ld cells (%p-%p)\n", (unsigned long int)(H-(CELL *)Yap_GlobalBase),(CELL *)Yap_GlobalBase,H);
|
|
fprintf(Yap_stderr, "%% Local:%8ld cells (%p-%p)\n", (unsigned long int)(LCL0-ASP),LCL0,ASP);
|
|
fprintf(Yap_stderr, "%% Trail:%8ld cells (%p-%p)\n",
|
|
(unsigned long int)(TR-(tr_fr_ptr)Yap_TrailBase),Yap_TrailBase,TR);
|
|
#endif
|
|
fprintf(Yap_stderr, "%% growing the trail %ld bytes\n", size);
|
|
}
|
|
Yap_ErrorMessage = NULL;
|
|
#if USE_SYSTEM_MALLOC
|
|
execute_growstack(size, TRUE, in_parser, old_trp, tksp, vep);
|
|
#else
|
|
if (!Yap_ExtendWorkSpace(size)) {
|
|
Yap_ErrorMessage = NULL;
|
|
if (contiguous_only) {
|
|
/* I can't expand in this case */
|
|
trail_overflows--;
|
|
return FALSE;
|
|
}
|
|
execute_growstack(size, TRUE, in_parser, old_trp, tksp, vep);
|
|
} else {
|
|
YAPEnterCriticalSection();
|
|
if (in_parser) {
|
|
TrDiff = LDiff = GDiff = DelayDiff = XDiff = HDiff = GDiff0 = 0;
|
|
AdjustScannerStacks(tksp, vep);
|
|
}
|
|
Yap_TrailTop += size;
|
|
YAPLeaveCriticalSection();
|
|
}
|
|
#endif
|
|
growth_time = Yap_cputime()-start_growth_time;
|
|
total_trail_overflow_time += growth_time;
|
|
if (gc_verbose) {
|
|
fprintf(Yap_stderr, "%% took %g sec\n", (double)growth_time/1000);
|
|
fprintf(Yap_stderr, "%% Total of %g sec expanding trail \n", (double)total_trail_overflow_time/1000);
|
|
}
|
|
LOCK(SignalLock);
|
|
if (ActiveSignals == YAP_TROVF_SIGNAL) {
|
|
CreepFlag = CalculateStackGap();
|
|
}
|
|
ActiveSignals &= ~YAP_TROVF_SIGNAL;
|
|
UNLOCK(SignalLock);
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* Used by do_goal() when we're short of stack space */
|
|
int
|
|
Yap_growtrail(long size, int contiguous_only)
|
|
{
|
|
return do_growtrail(size, contiguous_only, FALSE, NULL, NULL, NULL);
|
|
}
|
|
|
|
int
|
|
Yap_growtrail_in_parser(tr_fr_ptr *old_trp, TokEntry **tksp, VarEntry **vep)
|
|
{
|
|
return do_growtrail(0, FALSE, TRUE, old_trp, tksp, vep);
|
|
}
|
|
|
|
CELL **
|
|
Yap_shift_visit(CELL **to_visit, CELL ***to_visit_maxp)
|
|
{
|
|
#if USE_SYSTEM_MALLOC || USE_DL_MALLOC
|
|
CELL **to_visit_max = *to_visit_maxp;
|
|
Int sz1 = (CELL)to_visit_max-(CELL)to_visit;
|
|
Int sz0 = AuxTop - (ADDR)to_visit_maxp, sz, dsz;
|
|
char *newb = Yap_ExpandPreAllocCodeSpace(0, NULL);
|
|
|
|
/* check new size */
|
|
sz = AuxTop-newb;
|
|
/* how much we grew */
|
|
dsz = sz-sz0;
|
|
/* copy whole block to end */
|
|
cpcellsd((CELL *)newb, (CELL *)(newb+dsz), sz0/sizeof(CELL));
|
|
/* base pointer is block start */
|
|
*to_visit_maxp = (CELL **)newb;
|
|
/* current top is originall diff + diff size */
|
|
return (CELL **)((char *)newb+(sz1+dsz));
|
|
#else
|
|
CELL **old_top = (CELL **)Yap_TrailTop;
|
|
if (do_growtrail(64 * 1024L, FALSE, FALSE, NULL, NULL, NULL)) {
|
|
CELL **dest = (CELL **)((char *)to_visit+64 * 1024L);
|
|
cpcellsd((CELL *)dest, (CELL *)to_visit, (CELL)((CELL *)old_top-(CELL *)to_visit));
|
|
return dest;
|
|
} else {
|
|
Yap_Error(OUT_OF_HEAP_ERROR,TermNil,"cannot grow temporary stack for unification (%p)", Yap_TrailTop);
|
|
return to_visit;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static Int
|
|
p_inform_trail_overflows(void)
|
|
{
|
|
Term tn = MkIntTerm(trail_overflows);
|
|
Term tt = MkIntegerTerm(total_trail_overflow_time);
|
|
|
|
return(Yap_unify(tn, ARG1) && Yap_unify(tt, ARG2));
|
|
}
|
|
|
|
/* :- grow_heap(Size) */
|
|
static Int
|
|
p_growheap(void)
|
|
{
|
|
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));
|
|
}
|
|
|
|
static Int
|
|
p_inform_heap_overflows(void)
|
|
{
|
|
Term tn = MkIntTerm(heap_overflows);
|
|
Term tt = MkIntegerTerm(total_heap_overflow_time);
|
|
|
|
return(Yap_unify(tn, ARG1) && Yap_unify(tt, ARG2));
|
|
}
|
|
|
|
/* :- grow_stack(Size) */
|
|
static Int
|
|
p_growstack(void)
|
|
{
|
|
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));
|
|
}
|
|
|
|
static Int
|
|
p_inform_stack_overflows(void)
|
|
{ /* */
|
|
Term tn = MkIntTerm(stack_overflows);
|
|
Term tt = MkIntegerTerm(total_stack_overflow_time);
|
|
|
|
return(Yap_unify(tn, ARG1) && Yap_unify(tt, ARG2));
|
|
|
|
}
|
|
|
|
Int
|
|
Yap_total_stack_shift_time(void)
|
|
{
|
|
return(total_heap_overflow_time+
|
|
total_stack_overflow_time+
|
|
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();
|
|
}
|