1958 lines
54 KiB
C
Executable File
1958 lines
54 KiB
C
Executable File
/*************************************************************************
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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 "absmi.h"
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#include "YapHeap.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 YAPOR_THREADS
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#include "opt.mavar.h"
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#endif /* YAPOR_THREADS */
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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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typedef enum {
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STACK_SHIFTING = 0,
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STACK_COPYING = 1,
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STACK_INCREMENTAL_COPYING = 2
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} what_stack_copying;
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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, ( USES_REGS1 ));
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STATIC_PROTO(Int p_growstack, ( USES_REGS1 ));
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STATIC_PROTO(Int p_inform_trail_overflows, ( USES_REGS1 ));
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STATIC_PROTO(Int p_inform_heap_overflows, ( USES_REGS1 ));
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STATIC_PROTO(Int p_inform_stack_overflows, ( USES_REGS1 ));
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/* #define undf7 */
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/* #define undf5 */
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STATIC_PROTO(int growstack, (long CACHE_TYPE));
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STATIC_PROTO(void MoveGlobal, ( CACHE_TYPE1 ));
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STATIC_PROTO(void MoveLocalAndTrail, ( CACHE_TYPE1 ));
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STATIC_PROTO(void SetHeapRegs, (int CACHE_TYPE));
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STATIC_PROTO(void AdjustTrail, (int, int CACHE_TYPE));
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STATIC_PROTO(void AdjustLocal, (int CACHE_TYPE));
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STATIC_PROTO(void AdjustGlobal, (long, int CACHE_TYPE));
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STATIC_PROTO(void AdjustGrowStack, ( CACHE_TYPE1 ));
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STATIC_PROTO(int static_growheap, (long,int,struct intermediates *,tr_fr_ptr *, TokEntry **, VarEntry ** CACHE_TYPE));
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STATIC_PROTO(void cpcellsd, (CELL *, CELL *, CELL));
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STATIC_PROTO(CELL AdjustAppl, (CELL CACHE_TYPE));
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STATIC_PROTO(CELL AdjustPair, (CELL CACHE_TYPE));
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STATIC_PROTO(void AdjustStacksAndTrail, (long, int CACHE_TYPE));
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STATIC_PROTO(void AdjustRegs, (int CACHE_TYPE));
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STATIC_PROTO(Term AdjustGlobTerm, (Term CACHE_TYPE));
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static void
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LeaveGrowMode(prolog_exec_mode grow_mode)
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{
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Yap_PrologMode &= ~grow_mode;
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if (Yap_PrologMode & AbortMode) {
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CACHE_REGS
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Yap_PrologMode &= ~AbortMode;
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Yap_Error(PURE_ABORT, TermNil, "");
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/* in case someone mangles the P register */
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save_machine_regs();
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#if _MSC_VER || defined(__MINGW32__)
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/* don't even think about trying this */
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#else
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#if PUSH_REGS
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restore_absmi_regs(&Yap_standard_regs);
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#endif
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siglongjmp (Yap_RestartEnv, 1);
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#endif
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}
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}
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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(int copying_threads USES_REGS)
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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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LOCAL_OldLCL0 = LCL0;
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LOCAL_OldASP = ASP;
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LOCAL_OldGlobalBase = (CELL *)Yap_GlobalBase;
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LOCAL_OldH = H;
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LOCAL_OldH0 = H0;
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LOCAL_OldTrailBase = Yap_TrailBase;
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LOCAL_OldTrailTop = Yap_TrailTop;
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LOCAL_OldTR = TR;
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LOCAL_OldHeapBase = Yap_HeapBase;
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LOCAL_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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if (LOCAL_GDiff) {
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/* make sure we are not just expanding the delay stack */
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Yap_GlobalBase = BaseAddrAdjust(Yap_GlobalBase);
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}
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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 = PtoBaseAdjust(AuxSp);
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AuxTop = (ADDR)PtoBaseAdjust((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 = BaseAddrAdjust(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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LOCK(LOCAL_SignalLock);
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if (LCL0)
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LCL0 = PtoLocAdjust(LCL0);
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UNLOCK(LOCAL_SignalLock);
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if (H)
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H = PtoGloAdjust(H);
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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 = CutCAdjust(Yap_REGS.CUT_C_TOP);
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#endif
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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 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 (!copying_threads) {
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if (LOCAL_GlobalArena)
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LOCAL_GlobalArena = AbsAppl(PtoGloAdjust(RepAppl(LOCAL_GlobalArena)));
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}
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#ifdef COROUTINING
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if (LOCAL_AttsMutableList)
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LOCAL_AttsMutableList = AbsAppl(PtoGloAdjust(RepAppl(LOCAL_AttsMutableList)));
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if (LOCAL_WokenGoals)
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LOCAL_WokenGoals = AbsAppl(PtoGloAdjust(RepAppl(LOCAL_WokenGoals)));
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#endif
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LOCAL_GcGeneration = AbsAppl(PtoGloAdjust(RepAppl(LOCAL_GcGeneration)));
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LOCAL_GcPhase = AbsAppl(PtoGloAdjust(RepAppl(LOCAL_GcPhase)));
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}
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static void
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MoveLocalAndTrail( USES_REGS1 )
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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 *)LOCAL_OldASP+LOCAL_BaseDiff), (CELL *)LOCAL_OldTR - LOCAL_OldASP);
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#else
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cpcellsd(ASP, LOCAL_OldASP, (CELL *)LOCAL_OldTR - LOCAL_OldASP);
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#endif
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}
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#ifdef YAPOR_THREADS
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static void
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CopyLocalAndTrail( USES_REGS1 )
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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((void *)ASP, (void *)LOCAL_OldASP, (CELL *)LOCAL_OldTR - LOCAL_OldASP);
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#endif
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}
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static void
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IncrementalCopyStacksFromWorker( USES_REGS1 )
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{
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memcpy((void *) PtoGloAdjust((CELL *)LOCAL_start_global_copy),
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(void *) (LOCAL_start_global_copy),
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(size_t) (LOCAL_end_global_copy - LOCAL_start_global_copy));
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memcpy((void *) PtoLocAdjust((CELL *)LOCAL_start_local_copy),
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(void *) LOCAL_start_local_copy,
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(size_t) (LOCAL_end_local_copy - LOCAL_start_local_copy));
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memcpy((void *) PtoTRAdjust((tr_fr_ptr)LOCAL_start_trail_copy),
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(void *) (LOCAL_start_trail_copy),
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(size_t) (LOCAL_end_trail_copy - LOCAL_start_trail_copy));
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}
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#ifndef TABLING
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static CELL
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worker_p_binding(int worker_p, CELL *aux_ptr)
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{
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CACHE_REGS
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if (aux_ptr > H) {
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CELL reg = REMOTE_ThreadHandle(worker_p).current_yaam_regs->LCL0_[aux_ptr-LCL0];
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reg = AdjustGlobTerm(reg PASS_REGS);
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return reg;
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} else {
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CELL reg = REMOTE_ThreadHandle(worker_p).current_yaam_regs-> H0_[aux_ptr-H0];
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reg = AdjustGlobTerm(reg PASS_REGS);
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return reg;
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}
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}
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#endif
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static void
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RestoreTrail(int worker_p USES_REGS)
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{
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tr_fr_ptr aux_tr;
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/* install fase --> TR and LOCAL_top_cp->cp_tr are equal */
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aux_tr = ((choiceptr) LOCAL_start_local_copy)->cp_tr;
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TR = ((choiceptr) LOCAL_end_local_copy)->cp_tr;
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if (TR == aux_tr)
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return;
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if (aux_tr < TR){
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Yap_Error(SYSTEM_ERROR, TermNil, "oops");
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}
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Yap_NEW_MAHASH((ma_h_inner_struct *)H PASS_REGS);
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while (TR != aux_tr) {
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CELL aux_cell = TrailTerm(--aux_tr);
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if (IsVarTerm(aux_cell)) {
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if (aux_cell < LOCAL_start_global_copy || EQUAL_OR_YOUNGER_CP((choiceptr)LOCAL_end_local_copy, (choiceptr)aux_cell)) {
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YAPOR_ERROR_CHECKING((CELL *)aux_cell < H0, "RestoreTrail: aux_cell < H0");
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YAPOR_ERROR_CHECKING((ADDR)aux_cell > Yap_LocalBase, "RestoreTrail: aux_cell > LocalBase");
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#ifdef TABLING
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*((CELL *) aux_cell) = TrailVal(aux_tr);
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#else
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*((CELL *) aux_cell) = worker_p_binding(worker_p, CellPtr(aux_cell));
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#endif /* TABLING */
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}
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#ifdef TABLING
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} else if (IsPairTerm(aux_cell)) {
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/* avoid frozen segments */
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aux_cell = (CELL) RepPair(aux_cell);
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if (IN_BETWEEN(Yap_TrailBase, aux_cell, Yap_TrailTop)) {
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aux_tr = (tr_fr_ptr) aux_cell;
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}
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#endif /* TABLING */
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#ifdef MULTI_ASSIGNMENT_VARIABLES
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} else if (IsApplTerm(aux_cell)) {
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CELL *cell_ptr = RepAppl(aux_cell);
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if (((CELL *)aux_cell < Get_LOCAL_top_cp()->cp_h ||
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EQUAL_OR_YOUNGER_CP(Get_LOCAL_top_cp(), (choiceptr)aux_cell)) &&
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!Yap_lookup_ma_var(cell_ptr PASS_REGS)) {
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/* first time we found the variable, let's put the new value */
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#ifdef TABLING
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*cell_ptr = TrailVal(aux_tr);
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#else
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*cell_ptr = worker_p_binding(worker_p, cell_ptr);
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#endif /* TABLING */
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}
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/* skip the old value */
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aux_tr--;
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#endif /* MULTI_ASSIGNMENT_VARIABLES */
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}
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}
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}
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#endif /* YAPOR_THREADS */
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static void
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MoveGlobal( USES_REGS1 )
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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 *)LOCAL_OldGlobalBase, LOCAL_OldH - (CELL *)LOCAL_OldGlobalBase);
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}
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static void
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MoveExpandedGlobal( USES_REGS1 )
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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+(LOCAL_GDiff-LOCAL_BaseDiff)), (CELL *)Yap_GlobalBase, LOCAL_OldH - (CELL *)LOCAL_OldGlobalBase);
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}
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static void
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MoveGlobalWithHole( USES_REGS1 )
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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+(LOCAL_GDiff0-LOCAL_BaseDiff)), (CELL *)Yap_GlobalBase, LOCAL_OldH - (CELL *)LOCAL_OldGlobalBase);
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#else
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cpcellsd((CELL *)((char *)LOCAL_OldGlobalBase+LOCAL_GDiff0), (CELL *)LOCAL_OldGlobalBase, LOCAL_OldH - (CELL *)LOCAL_OldGlobalBase);
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#endif
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}
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static void
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MoveHalfGlobal(CELL *OldPt USES_REGS)
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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 = LOCAL_OldH-OldPt;
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CELL *NewPt = (CELL *)((char*)OldPt+LOCAL_GDiff);
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CELL *IntPt = (CELL *)((char*)OldPt+LOCAL_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 USES_REGS)
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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 USES_REGS)
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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, int thread_copying USES_REGS)
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{
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volatile tr_fr_ptr ptt, tr_base = (tr_fr_ptr)Yap_TrailBase;
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#if defined(YAPOR_THREADS)
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if (thread_copying == STACK_INCREMENTAL_COPYING) {
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ptt = (tr_fr_ptr)(LOCAL_end_trail_copy);
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tr_base = (tr_fr_ptr)(LOCAL_start_trail_copy);
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} else {
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#endif
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ptt = TR;
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#if defined(YAPOR_THREADS)
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}
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#endif
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/* moving the trail is simple */
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while (ptt != tr_base) {
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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 (thread_copying) {
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RESET_VARIABLE(&TrailTerm(ptt));
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}
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} else if (IsPairTerm(reg)) {
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TrailTerm(ptt) = AdjustPair(reg PASS_REGS);
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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 PASS_REGS);
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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 PASS_REGS);
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} else if (IsPairTerm(reg2)) {
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TrailVal(ptt) = AdjustPair(reg2 PASS_REGS);
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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(int thread_copying USES_REGS)
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{
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register CELL reg, *pt, *pt_bot;
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/* Adjusting the local */
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#if defined(YAPOR_THREADS)
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|
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;
|
|
#if USE_GMP
|
|
case (CELL)FunctorBigInt:
|
|
{
|
|
Int sz = 2+
|
|
(sizeof(MP_INT)+
|
|
(((MP_INT *)(pt+2))->_mp_alloc*sizeof(mp_limb_t)))/CellSize;
|
|
pt += sz;
|
|
}
|
|
break;
|
|
#endif
|
|
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 = 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)
|
|
{
|
|
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);
|
|
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) {
|
|
#if defined(YAPOR_THREADS)
|
|
fprintf(Yap_stderr, "%% Worker Id %d:\n", worker_id);
|
|
#endif
|
|
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 (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;
|
|
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 request, CELL **ptr, CELL *hsplit USES_REGS)
|
|
{
|
|
UInt start_growth_time, growth_time;
|
|
int gc_verbose;
|
|
char *omax = (char *)H0;
|
|
ADDR old_GlobalBase = Yap_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 *)Yap_GlobalBase) {
|
|
insert_in_delays = TRUE;
|
|
/* expanding attributed variables */
|
|
if (omax - size > Yap_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) */
|
|
Yap_ErrorMessage = NULL;
|
|
Yap_PrologMode |= GrowStackMode;
|
|
start_growth_time = Yap_cputime();
|
|
if (do_grow) {
|
|
if (!GLOBAL_AllowGlobalExpansion) {
|
|
Yap_ErrorMessage = "Global Stack crashed against Local Stack";
|
|
LeaveGrowMode(GrowStackMode);
|
|
return 0;
|
|
}
|
|
if (!GLOBAL_AllowGlobalExpansion || !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";
|
|
LeaveGrowMode(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";
|
|
}
|
|
#if defined(YAPOR_THREADS)
|
|
fprintf(Yap_stderr, "%% Worker Id %d:\n", worker_id);
|
|
#endif
|
|
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();
|
|
/* 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)Yap_TrailTop-(CELL)Yap_GlobalBase)-minimal_request;
|
|
LOCAL_LDiff = LOCAL_TrDiff = size;
|
|
} else {
|
|
/* we may still have an overflow */
|
|
LOCAL_BaseDiff = Yap_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;
|
|
Yap_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;
|
|
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);
|
|
}
|
|
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));
|
|
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 USES_REGS)
|
|
{
|
|
unsigned long size = sizeof(CELL) * K16;
|
|
int shift_factor = (heap_overflows > 8 ? 8 : 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 nsize = 4*AtomHashTableSize-1;
|
|
UInt start_growth_time = Yap_cputime(), growth_time;
|
|
int gc_verbose = Yap_is_gc_verbose();
|
|
|
|
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;
|
|
}
|
|
atom_table_overflows++;
|
|
if (gc_verbose) {
|
|
#if defined(YAPOR_THREADS)
|
|
fprintf(Yap_stderr, "%% Worker Id %d:\n", worker_id);
|
|
#endif
|
|
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 - 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;
|
|
|
|
if (NOfAtoms > 2*AtomHashTableSize) {
|
|
UInt n = NOfAtoms;
|
|
if (GLOBAL_AGcThreshold)
|
|
Yap_atom_gc( PASS_REGS1 );
|
|
/* check if we have a significant improvement from agc */
|
|
if (n > NOfAtoms+ NOfAtoms/10 ||
|
|
NOfAtoms > 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);
|
|
return res;
|
|
}
|
|
res=do_growheap(fix_code, in_size, (struct intermediates *)cip, NULL, NULL, NULL PASS_REGS);
|
|
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;
|
|
|
|
Yap_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_Yap_GlobalBase = Yap_GlobalBase;
|
|
|
|
if (!GLOBAL_AllowGlobalExpansion) {
|
|
Yap_ErrorMessage = "Database crashed against stacks";
|
|
return FALSE;
|
|
}
|
|
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();
|
|
LOCAL_GDiff = LOCAL_DelayDiff = LOCAL_BaseDiff = size-size0;
|
|
} else {
|
|
YAPEnterCriticalSection();
|
|
if (Yap_GlobalBase != old_Yap_GlobalBase) {
|
|
LOCAL_GDiff = LOCAL_BaseDiff = LOCAL_DelayDiff = Yap_GlobalBase-old_Yap_GlobalBase;
|
|
Yap_GlobalBase=old_Yap_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) {
|
|
Yap_TrailTop += size0;
|
|
}
|
|
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);
|
|
Yap_ErrorMessage = NULL;
|
|
start_growth_time = Yap_cputime();
|
|
gc_verbose = Yap_is_gc_verbose();
|
|
stack_overflows++;
|
|
if (gc_verbose) {
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
fprintf(Yap_stderr, "%% Worker Id %d:\n", worker_id);
|
|
#endif
|
|
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 PASS_REGS))
|
|
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)
|
|
{
|
|
CACHE_REGS
|
|
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) {
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
fprintf(Yap_stderr, "%% Worker Id %d:\n", worker_id);
|
|
#endif
|
|
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 PASS_REGS)) {
|
|
LeaveGrowMode(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);
|
|
}
|
|
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-Yap_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);
|
|
trail_overflows++;
|
|
if (gc_verbose) {
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
fprintf(Yap_stderr, "%% Worker Id %d:\n", worker_id);
|
|
#endif
|
|
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 (!GLOBAL_AllowTrailExpansion) {
|
|
Yap_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)) {
|
|
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 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);
|
|
}
|
|
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(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(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( 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(heap_overflows);
|
|
Term tt = MkIntegerTerm(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 */
|
|
Yap_GlobalBase = Yap_thread_gl[worker_p].global_base;
|
|
Yap_LocalBase = Yap_thread_gl[worker_p].local_base;
|
|
Yap_TrailBase = Yap_thread_gl[worker_p].trail_base;
|
|
Yap_TrailTop = Yap_thread_gl[worker_p].trail_top;
|
|
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(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();
|
|
}
|