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yap-6.3/C/qlyr.c
2012-04-15 00:01:02 +01:00

1056 lines
25 KiB
C

/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V. Santos Costa and Universidade do Porto 1985-- *
* *
**************************************************************************
* *
* File: qlyr.c *
* comments: quick saver/loader *
* *
* Last rev: $Date: 2011-08-29$,$Author: vsc $ *
* $Log: not supported by cvs2svn $ *
* *
*************************************************************************/
#include <SWI-Stream.h>
#include "absmi.h"
#include "Foreign.h"
#include "alloc.h"
#include "yapio.h"
#include "iopreds.h"
#include "attvar.h"
#if HAVE_STRING_H
#include <string.h>
#endif
#include "qly.h"
STATIC_PROTO(void RestoreEntries, (PropEntry *, int USES_REGS));
STATIC_PROTO(void CleanCode, (PredEntry * USES_REGS));
typedef enum {
OUT_OF_TEMP_SPACE = 0,
OUT_OF_ATOM_SPACE = 1,
OUT_OF_CODE_SPACE = 2,
UNKNOWN_ATOM = 3,
UNKNOWN_FUNCTOR = 4,
UNKNOWN_PRED_ENTRY = 5,
UNKNOWN_OPCODE = 6,
UNKNOWN_DBREF = 7,
BAD_ATOM = 8,
MISMATCH = 9,
INCONSISTENT_CPRED = 10,
BAD_READ = 11
} qlfr_err_t;
static char *
Yap_AlwaysAllocCodeSpace(UInt size)
{
char *out;
while (!(out = Yap_AllocCodeSpace(size))) {
if (!Yap_growheap(FALSE, size, NULL)) {
return NULL;
}
}
return out;
}
static void
QLYR_ERROR(qlfr_err_t my_err)
{
fprintf(stderr,"Error %d\n", my_err);
exit(1);
}
static Atom
LookupAtom(Atom oat)
{
CACHE_REGS
CELL hash = (CELL)(oat) % LOCAL_ImportAtomHashTableSize;
import_atom_hash_entry_t *a;
a = LOCAL_ImportAtomHashChain[hash];
while (a) {
if (a->oval == oat) {
return a->val;
}
a = a->next;
}
QLYR_ERROR(UNKNOWN_ATOM);
return NIL;
}
static void
InsertAtom(Atom oat, Atom at)
{
CACHE_REGS
CELL hash = (CELL)(oat) % LOCAL_ImportAtomHashTableSize;
import_atom_hash_entry_t *a;
a = LOCAL_ImportAtomHashChain[hash];
while (a) {
if (a->oval == oat) {
return;
}
a = a->next;
}
a = (import_atom_hash_entry_t *)malloc(sizeof(import_atom_hash_entry_t));
if (!a) {
return;
}
a->val = at;
a->oval = oat;
a->next = LOCAL_ImportAtomHashChain[hash];
LOCAL_ImportAtomHashChain[hash] = a;
}
static Functor
LookupFunctor(Functor ofun)
{
CACHE_REGS
CELL hash = (CELL)(ofun) % LOCAL_ImportFunctorHashTableSize;
import_functor_hash_entry_t *f;
f = LOCAL_ImportFunctorHashChain[hash];
while (f) {
if (f->oval == ofun) {
return f->val;
}
f = f->next;
}
QLYR_ERROR(UNKNOWN_FUNCTOR);
return NIL;
}
static void
InsertFunctor(Functor ofun, Functor fun)
{
CACHE_REGS
CELL hash = (CELL)(ofun) % LOCAL_ImportFunctorHashTableSize;
import_functor_hash_entry_t *f;
f = LOCAL_ImportFunctorHashChain[hash];
while (f) {
if (f->oval == ofun) {
return;
}
f = f->next;
}
f = (import_functor_hash_entry_t *)malloc(sizeof(import_functor_hash_entry_t));
if (!f) {
return;
}
f->val = fun;
f->oval = ofun;
f->next = LOCAL_ImportFunctorHashChain[hash];
LOCAL_ImportFunctorHashChain[hash] = f;
}
static PredEntry *
LookupPredEntry(PredEntry *op)
{
CACHE_REGS
CELL hash = (CELL)(op) % LOCAL_ImportPredEntryHashTableSize;
import_pred_entry_hash_entry_t *p;
p = LOCAL_ImportPredEntryHashChain[hash];
while (p) {
if (p->oval == op) {
return p->val;
}
p = p->next;
}
QLYR_ERROR(UNKNOWN_PRED_ENTRY);
return NIL;
}
static void
InsertPredEntry(PredEntry *op, PredEntry *pe)
{
CACHE_REGS
CELL hash = (CELL)(op) % LOCAL_ImportPredEntryHashTableSize;
import_pred_entry_hash_entry_t *p;
p = LOCAL_ImportPredEntryHashChain[hash];
while (p) {
if (p->oval == op) {
return;
}
p = p->next;
}
p = (import_pred_entry_hash_entry_t *)malloc(sizeof(import_pred_entry_hash_entry_t));
if (!p) {
return;
}
p->val = pe;
p->oval = op;
p->next = LOCAL_ImportPredEntryHashChain[hash];
LOCAL_ImportPredEntryHashChain[hash] = p;
}
static OPCODE
LookupOPCODE(OPCODE op)
{
CACHE_REGS
CELL hash = (CELL)(op) % LOCAL_ImportOPCODEHashTableSize;
import_opcode_hash_entry_t *f;
f = LOCAL_ImportOPCODEHashChain[hash];
while (f) {
if (f->oval == op) {
return f->val;
}
f = f->next;
}
QLYR_ERROR(UNKNOWN_OPCODE);
return NIL;
}
static int
OpcodeID(OPCODE op)
{
CACHE_REGS
CELL hash = (CELL)(op) % LOCAL_ImportOPCODEHashTableSize;
import_opcode_hash_entry_t *f;
f = LOCAL_ImportOPCODEHashChain[hash];
while (f) {
if (f->oval == op) {
return f->id;
}
f = f->next;
}
QLYR_ERROR(UNKNOWN_OPCODE);
return NIL;
}
static void
InsertOPCODE(OPCODE op0, int i, OPCODE op)
{
CACHE_REGS
CELL hash = (CELL)(op0) % LOCAL_ImportOPCODEHashTableSize;
import_opcode_hash_entry_t *f;
f = LOCAL_ImportOPCODEHashChain[hash];
while (f) {
if (f->oval == op0) {
return;
}
f = f->next;
}
f = (import_opcode_hash_entry_t *)malloc(sizeof(import_opcode_hash_entry_t));
if (!f) {
return;
}
f->val = op;
f->oval = op0;
f->id = i;
f->next = LOCAL_ImportOPCODEHashChain[hash];
LOCAL_ImportOPCODEHashChain[hash] = f;
}
static DBRef
LookupDBRef(DBRef dbr)
{
CACHE_REGS
CELL hash = (CELL)(dbr) % LOCAL_ImportDBRefHashTableSize;
import_dbref_hash_entry_t *p;
p = LOCAL_ImportDBRefHashChain[hash];
while (p) {
if (p->oval == dbr) {
p->count++;
return p->val;
}
p = p->next;
}
QLYR_ERROR(UNKNOWN_DBREF);
return NIL;
}
static LogUpdClause *
LookupMayFailDBRef(DBRef dbr)
{
CACHE_REGS
CELL hash = (CELL)(dbr) % LOCAL_ImportDBRefHashTableSize;
import_dbref_hash_entry_t *p;
p = LOCAL_ImportDBRefHashChain[hash];
while (p) {
if (p->oval == dbr) {
p->count++;
return (LogUpdClause *)p->val;
}
p = p->next;
}
return NULL;
}
static void
InsertDBRef(DBRef dbr0, DBRef dbr)
{
CACHE_REGS
CELL hash = (CELL)(dbr0) % LOCAL_ImportDBRefHashTableSize;
import_dbref_hash_entry_t *p;
p = LOCAL_ImportDBRefHashChain[hash];
while (p) {
if (p->oval == dbr0) {
return;
}
p = p->next;
}
p = (import_dbref_hash_entry_t *)malloc(sizeof(import_dbref_hash_entry_t));
if (!p) {
return;
}
p->val = dbr;
p->oval = dbr0;
p->count = 0;
p->next = LOCAL_ImportDBRefHashChain[hash];
LOCAL_ImportDBRefHashChain[hash] = p;
}
static void
InitHash(void)
{
CACHE_REGS
LOCAL_ImportFunctorHashTableSize = EXPORT_FUNCTOR_TABLE_SIZE;
LOCAL_ImportFunctorHashChain = (import_functor_hash_entry_t **)calloc(1, sizeof(import_functor_hash_entry_t *)* LOCAL_ImportFunctorHashTableSize);
LOCAL_ImportAtomHashTableSize = EXPORT_ATOM_TABLE_SIZE;
LOCAL_ImportAtomHashChain = (import_atom_hash_entry_t **)calloc(1, sizeof(import_atom_hash_entry_t *)* LOCAL_ImportAtomHashTableSize);
LOCAL_ImportOPCODEHashTableSize = EXPORT_OPCODE_TABLE_SIZE;
LOCAL_ImportOPCODEHashChain = (import_opcode_hash_entry_t **)calloc(1, sizeof(import_opcode_hash_entry_t *)* LOCAL_ImportOPCODEHashTableSize);
LOCAL_ImportPredEntryHashTableSize = EXPORT_PRED_ENTRY_TABLE_SIZE;
LOCAL_ImportPredEntryHashChain = (import_pred_entry_hash_entry_t **)calloc(1, sizeof(import_pred_entry_hash_entry_t *)* LOCAL_ImportPredEntryHashTableSize);
LOCAL_ImportDBRefHashTableSize = EXPORT_DBREF_TABLE_SIZE;
LOCAL_ImportDBRefHashChain = (import_dbref_hash_entry_t **)calloc(1, sizeof(import_dbref_hash_entry_t *)* LOCAL_ImportDBRefHashTableSize);
}
static void
CloseHash(void)
{
CACHE_REGS
UInt i;
for (i=0; i < LOCAL_ImportFunctorHashTableSize; i++) {
import_functor_hash_entry_t *a = LOCAL_ImportFunctorHashChain[i];
while (a) {
import_functor_hash_entry_t *a0 = a;
a = a->next;
free(a0);
}
}
LOCAL_ImportFunctorHashTableSize = 0;
free(LOCAL_ImportFunctorHashChain);
LOCAL_ImportFunctorHashChain = NULL;
for (i=0; i < LOCAL_ImportAtomHashTableSize; i++) {
import_atom_hash_entry_t *a = LOCAL_ImportAtomHashChain[i];
while (a) {
import_atom_hash_entry_t *a0 = a;
a = a->next;
free(a0);
}
}
LOCAL_ImportAtomHashTableSize = 0;
free(LOCAL_ImportAtomHashChain);
LOCAL_ImportAtomHashChain = NULL;
for (i=0; i < LOCAL_ImportOPCODEHashTableSize; i++) {
import_opcode_hash_entry_t *a = LOCAL_ImportOPCODEHashChain[i];
while (a) {
import_opcode_hash_entry_t *a0 = a;
a = a->next;
free(a0);
}
}
LOCAL_ImportOPCODEHashTableSize = 0;
free(LOCAL_ImportOPCODEHashChain);
LOCAL_ImportOPCODEHashChain = NULL;
for (i=0; i < LOCAL_ImportPredEntryHashTableSize; i++) {
import_pred_entry_hash_entry_t *a = LOCAL_ImportPredEntryHashChain[i];
while (a) {
import_pred_entry_hash_entry_t *a0 = a;
a = a->next;
free(a0);
}
}
LOCAL_ImportPredEntryHashTableSize = 0;
free(LOCAL_ImportPredEntryHashChain);
LOCAL_ImportPredEntryHashChain = NULL;
for (i=0; i < LOCAL_ImportDBRefHashTableSize; i++) {
import_dbref_hash_entry_t *a = LOCAL_ImportDBRefHashChain[i];
while (a) {
import_dbref_hash_entry_t *a0 = a;
#ifdef DEBUG
if (!a->count) {
fprintf(stderr,"WARNING: unused reference %p\n",a);
}
#endif
a = a->next;
free(a0);
}
}
LOCAL_ImportDBRefHashTableSize = 0;
free(LOCAL_ImportDBRefHashChain);
LOCAL_ImportDBRefHashChain = NULL;
}
static inline Atom
AtomAdjust(Atom a)
{
return LookupAtom(a);
}
static inline Functor
FuncAdjust(Functor f)
{
return LookupFunctor(f);
return f;
}
static inline Term
AtomTermAdjust(Term t)
{
return MkAtomTerm(LookupAtom(AtomOfTerm(t)));
}
static inline Term
TermToGlobalOrAtomAdjust(Term t)
{
if (t && IsAtomTerm(t))
return AtomTermAdjust(t);
return t;
}
#define IsOldCode(P) FALSE
#define IsOldCodeCellPtr(P) FALSE
#define IsOldDelay(P) FALSE
#define IsOldDelayPtr(P) FALSE
#define IsOldLocalInTR(P) FALSE
#define IsOldLocalInTRPtr(P) FALSE
#define IsOldGlobal(P) FALSE
#define IsOldGlobalPtr(P) FALSE
#define IsOldTrail(P) FALSE
#define IsOldTrailPtr(P) FALSE
#define CharP(X) ((char *)(X))
#define REINIT_LOCK(P)
#define REINIT_RWLOCK(P)
#define BlobTypeAdjust(P) (P)
#define NoAGCAtomAdjust(P) (P)
#define OrArgAdjust(P)
#define TabEntryAdjust(P)
#define IntegerAdjust(D) (D)
#define AddrAdjust(P) (P)
#define MFileAdjust(P) (P)
#define CodeVarAdjust(P) CodeVarAdjust__(P PASS_REGS)
static inline Term
CodeVarAdjust__ (Term var USES_REGS)
{
if (var == 0L)
return var;
return (Term)(CharP(var) + LOCAL_HDiff);
}
#define ConstantAdjust(P) (P)
#define ArityAdjust(P) (P)
#define DoubleInCodeAdjust(P)
#define IntegerInCodeAdjust(Pxb)
static inline PredEntry *
PtoPredAdjust(PredEntry *p)
{
return LookupPredEntry(p);
}
static inline PredEntry *
PredEntryAdjust(PredEntry *p)
{
return LookupPredEntry(p);
}
static inline OPCODE
OpcodeAdjust(OPCODE OP) {
return LookupOPCODE(OP);
}
static inline Term
ModuleAdjust(Term M) {
if (!M)
return M;
return AtomTermAdjust(M);
}
#define ExternalFunctionAdjust(P) (P)
#define DBRecordAdjust(P) (P)
#define ModEntryPtrAdjust(P) (P)
#define AtomEntryAdjust(P) (P)
#define GlobalEntryAdjust(P) (P)
#define BlobTermInCodeAdjust(P) BlobTermInCodeAdjust__(P PASS_REGS)
#if TAGS_FAST_OPS
static inline Term
BlobTermInCodeAdjust__ (Term t USES_REGS)
{
return (Term) ((char *)(t) - LOCAL_HDiff);
}
#else
static inline Term
BlobTermInCodeAdjust__ (Term t USES_REGS)
{
return (Term) ((char *)(t) + LOCAL_HDiff);
}
#endif
#define DBTermAdjust(P) DBTermAdjust__(P PASS_REGS)
static inline DBTerm *
DBTermAdjust__ (DBTerm * dbtp USES_REGS)
{
return (DBTerm *) (CharP (dbtp) + LOCAL_HDiff);
}
#define CellPtoHeapAdjust(P) CellPtoHeapAdjust__(P PASS_REGS)
static inline CELL *
CellPtoHeapAdjust__ (CELL * dbtp USES_REGS)
{
return (CELL *) (CharP (dbtp) + LOCAL_HDiff);
}
#define PtoAtomHashEntryAdjust(P) (P)
#define CellPtoHeapCellAdjust(P) (P)
#define CellPtoTRAdjust(P) (P)
#define CodeAddrAdjust(P) (P)
#define ConsultObjAdjust(P) (P)
#define DelayAddrAdjust(P) (P)
#define DelayAdjust(P) (P)
#define GlobalAdjust(P) (P)
#define DBRefAdjust(P) DBRefAdjust__(P PASS_REGS)
static inline DBRef
DBRefAdjust__ (DBRef dbtp USES_REGS)
{
return LookupDBRef(dbtp);
}
#define DBRefPAdjust(P) DBRefPAdjust__(P PASS_REGS)
static inline DBRef *
DBRefPAdjust__ (DBRef * dbtp USES_REGS)
{
return (DBRef *) ((char *)(dbtp) + LOCAL_HDiff);
}
#define LUIndexAdjust(P) (P)
#define SIndexAdjust(P) (P)
#define LocalAddrAdjust(P) (P)
#define GlobalAddrAdjust(P) (P)
#define OpListAdjust(P) (P)
#define PtoLUCAdjust(P) PtoLUCAdjust__(P PASS_REGS)
#define PtoLUClauseAdjust(P) PtoLUCAdjust__(P PASS_REGS)
static inline LogUpdClause *
PtoLUCAdjust__ (LogUpdClause * dbtp USES_REGS)
{
return (LogUpdClause *) ((char *)(dbtp) + LOCAL_HDiff);
}
#define PtoStCAdjust(P) (P)
#define PtoArrayEAdjust(P) (P)
#define PtoArraySAdjust(P) (P)
#define PtoGlobalEAdjust(P) (P)
#define PtoDelayAdjust(P) (P)
#define PtoGloAdjust(P) (P)
#define PtoLocAdjust(P) (P)
#define PtoHeapCellAdjust(P) PtoHeapCellAdjust__(P PASS_REGS)
static inline CELL *
PtoHeapCellAdjust__ (CELL * ptr USES_REGS)
{
LogUpdClause *out;
if ((out = LookupMayFailDBRef((DBRef)ptr)))
return (CELL *)out;
return (CELL *) (CharP (ptr) + LOCAL_HDiff);
}
#define TermToGlobalAdjust(P) (P)
#define PtoOpAdjust(P) PtoOpAdjust__(P PASS_REGS)
static inline yamop *PtoOpAdjust__(yamop *ptr USES_REGS) {
if (ptr) {
if (ptr == LOCAL_ImportFAILCODE)
return FAILCODE;
return (yamop *) ((char *) (ptr) + LOCAL_HDiff);
}
return ptr;
}
#define PtoLUIndexAdjust(P) (P)
#define PtoDBTLAdjust(P) (P)
#define PtoPtoPredAdjust(P) (P)
#define OpRTableAdjust(P) (P)
#define OpEntryAdjust(P) (P)
#define PropAdjust(P) (P)
#define TrailAddrAdjust(P) (P)
#if PRECOMPUTE_REGADDRESS
#define XAdjust(P) XAdjust__(P PASS_REGS)
static inline wamreg
XAdjust__ (wamreg reg USES_REGS)
{
return (wamreg) ((wamreg) ((reg) + LOCAL_XDiff));
}
#else
#define XAdjust(X) (X)
#endif
#define YAdjust(X) (X)
#define HoldEntryAdjust(P) (P)
#define CodeCharPAdjust(P) (P)
#define CodeVoidPAdjust(P) (P)
#define HaltHookAdjust(P) (P)
#define recompute_mask(dbr)
#define rehash(oldcode, NOfE, KindOfEntries)
#define RestoreSWIHash()
#define Yap_op_from_opcode(OP) OpcodeID(OP)
#include "rheap.h"
static void
RestoreHashPreds( USES_REGS1 )
{
}
static void
RestoreAtomList(Atom atm USES_REGS)
{
}
static size_t
read_bytes(IOSTREAM *stream, void *ptr, size_t sz)
{
return Sfread(ptr, sz, 1, stream);
}
static unsigned char
read_byte(IOSTREAM *stream)
{
return Sgetc(stream);
}
static BITS16
read_bits16(IOSTREAM *stream)
{
BITS16 v;
read_bytes(stream, &v, sizeof(BITS16));
return v;
}
static UInt
read_uint(IOSTREAM *stream)
{
UInt v;
read_bytes(stream, &v, sizeof(UInt));
return v;
}
static int
read_int(IOSTREAM *stream)
{
int v;
read_bytes(stream, &v, sizeof(int));
return v;
}
static qlf_tag_t
read_tag(IOSTREAM *stream)
{
int ch = read_byte(stream);
return ch;
}
static void
read_header(IOSTREAM *stream)
{
int ch;
while ((ch = read_byte(stream)));
}
static void
ReadHash(IOSTREAM *stream)
{
CACHE_REGS
UInt i;
RCHECK(read_tag(stream) == QLY_START_X);
LOCAL_XDiff = (char *)(&ARG1) - (char *)read_uint(stream);
RCHECK(read_tag(stream) == QLY_START_OPCODES);
RCHECK(read_int(stream) == _std_top);
for (i= 0; i <= _std_top; i++) {
InsertOPCODE((OPCODE)read_uint(stream), i, Yap_opcode(i));
}
RCHECK(read_tag(stream) == QLY_START_ATOMS);
LOCAL_ImportAtomHashTableNum = read_uint(stream);
for (i = 0; i < LOCAL_ImportAtomHashTableNum; i++) {
Atom oat = (Atom)read_uint(stream);
Atom at;
qlf_tag_t tg = read_tag(stream);
if (tg == QLY_ATOM_WIDE) {
wchar_t *rep = (wchar_t *)AllocTempSpace();
UInt len;
len = read_uint(stream);
if (!EnoughTempSpace(len)) QLYR_ERROR(OUT_OF_TEMP_SPACE);
read_bytes(stream, rep, (len+1)*sizeof(wchar_t));
while (!(at = Yap_LookupWideAtom(rep))) {
if (!Yap_growheap(FALSE, 0, NULL)) {
exit(1);
}
}
if (at == NIL) QLYR_ERROR(OUT_OF_ATOM_SPACE);
} else if (tg == QLY_ATOM) {
char *rep = (char *)AllocTempSpace();
UInt len;
len = read_uint(stream);
if (!EnoughTempSpace(len)) QLYR_ERROR(OUT_OF_TEMP_SPACE);
read_bytes(stream, rep, (len+1)*sizeof(char));
while (!(at = Yap_FullLookupAtom(rep))) {
if (!Yap_growheap(FALSE, 0, NULL)) {
exit(1);
}
}
if (at == NIL) QLYR_ERROR(OUT_OF_ATOM_SPACE);
} else {
QLYR_ERROR(BAD_ATOM);
return;
}
InsertAtom(oat, at);
}
/* functors */
RCHECK(read_tag(stream) == QLY_START_FUNCTORS);
LOCAL_ImportFunctorHashTableNum = read_uint(stream);
for (i = 0; i < LOCAL_ImportFunctorHashTableNum; i++) {
Functor of = (Functor)read_uint(stream);
UInt arity = read_uint(stream);
Atom oat = (Atom)read_uint(stream);
Atom at = AtomAdjust(oat);
Functor f;
while (!(f = Yap_MkFunctor(at, arity))) {
if (!Yap_growheap(FALSE, 0, NULL)) {
exit(1);
}
}
InsertFunctor(of, f);
}
RCHECK(read_tag(stream) == QLY_START_PRED_ENTRIES);
LOCAL_ImportPredEntryHashTableNum = read_uint(stream);
for (i = 0; i < LOCAL_ImportPredEntryHashTableNum; i++) {
PredEntry *ope = (PredEntry *)read_uint(stream), *pe;
UInt arity = read_uint(stream);
Atom omod = (Atom)read_uint(stream);
Term mod;
if (omod) {
mod = MkAtomTerm(AtomAdjust(omod));
if (mod == TermProlog) mod = 0;
} else {
mod = TermProlog;
}
if (mod != IDB_MODULE) {
if (arity) {
Functor of = (Functor)read_uint(stream);
Functor f = LookupFunctor(of);
while(!(pe = RepPredProp(PredPropByFuncAndMod(f,mod)))) {
if (!Yap_growheap(FALSE, 0, NULL)) {
exit(1);
}
}
} else {
Atom oa = (Atom)read_uint(stream);
Atom a = LookupAtom(oa);
pe = RepPredProp(PredPropByAtomAndMod(a,mod));
}
} else {
if (arity == (UInt)-1) {
UInt i = read_uint(stream);
pe = Yap_FindLUIntKey(i);
} else if (arity == (UInt)(-2)) {
Atom oa = (Atom)read_uint(stream);
Atom a = LookupAtom(oa);
pe = RepPredProp(PredPropByAtomAndMod(a,mod));
} else {
Functor of = (Functor)read_uint(stream);
Functor f = LookupFunctor(of);
pe = RepPredProp(PredPropByFuncAndMod(f,mod));
}
pe->ArityOfPE = 3;
}
InsertPredEntry(ope, pe);
}
RCHECK(read_tag(stream) == QLY_START_DBREFS);
LOCAL_ImportDBRefHashTableNum = read_uint(stream);
for (i = 0; i < LOCAL_ImportDBRefHashTableNum; i++) {
LogUpdClause *ocl = (LogUpdClause *)read_uint(stream);
UInt sz = read_uint(stream);
UInt nrefs = read_uint(stream);
LogUpdClause *ncl = (LogUpdClause *)Yap_AlwaysAllocCodeSpace(sz);
ncl->Id = FunctorDBRef;
ncl->ClRefCount = nrefs;
InsertDBRef((DBRef)ocl,(DBRef)ncl);
}
RCHECK(read_tag(stream) == QLY_FAILCODE);
LOCAL_ImportFAILCODE = (yamop *)read_uint(stream);
}
static void
read_clauses(IOSTREAM *stream, PredEntry *pp, UInt nclauses, UInt flags) {
CACHE_REGS
if (pp->PredFlags & LogUpdatePredFlag) {
pp->TimeStampOfPred = 0L;
/* first, clean up whatever was there */
if (pp->cs.p_code.NOfClauses) {
LogUpdClause *cl;
cl = ClauseCodeToLogUpdClause(pp->cs.p_code.FirstClause);
do {
LogUpdClause *ncl = cl->ClNext;
Yap_ErLogUpdCl(cl);
cl = ncl;
} while (cl != NULL);
}
if (!nclauses) {
return;
}
while ((read_tag(stream) == QLY_START_LU_CLAUSE)) {
char *base = (void *)read_uint(stream);
UInt size = read_uint(stream);
LogUpdClause *cl;
Int nrefs = 0;
if ((cl = LookupMayFailDBRef((DBRef)base))) {
nrefs = cl->ClRefCount;
} else {
cl = (LogUpdClause *)Yap_AlwaysAllocCodeSpace(size);
}
read_bytes(stream, cl, size);
cl->ClFlags &= ~InUseMask;
cl->ClRefCount = nrefs;
LOCAL_HDiff = (char *)cl-base;
RestoreLUClause(cl, pp PASS_REGS);
Yap_AssertzClause(pp, cl->ClCode);
}
} else if (pp->PredFlags & MegaClausePredFlag) {
CACHE_REGS
char *base = (void *)read_uint(stream);
UInt size = read_uint(stream);
MegaClause *cl = (MegaClause *)Yap_AlwaysAllocCodeSpace(size);
if (nclauses) {
Yap_Abolish(pp);
}
LOCAL_HDiff = (char *)cl-base;
read_bytes(stream, cl, size);
pp->cs.p_code.FirstClause =
pp->cs.p_code.LastClause =
cl->ClCode;
pp->PredFlags |= MegaClausePredFlag;
/* enter index mode */
pp->OpcodeOfPred = INDEX_OPCODE;
pp->CodeOfPred = pp->cs.p_code.TrueCodeOfPred = (yamop *)(&(pp->OpcodeOfPred));
/* This must be set for restoremegaclause */
pp->cs.p_code.NOfClauses = nclauses;
RestoreMegaClause(cl PASS_REGS);
} else if (pp->PredFlags & DynamicPredFlag) {
UInt i;
for (i = 0; i < nclauses; i++) {
char *base = (void *)read_uint(stream);
UInt size = read_uint(stream);
DynamicClause *cl = (DynamicClause *)Yap_AlwaysAllocCodeSpace(size);
LOCAL_HDiff = (char *)cl-base;
read_bytes(stream, cl, size);
INIT_LOCK(cl->ClLock);
RestoreDynamicClause(cl, pp PASS_REGS);
Yap_AssertzClause(pp, cl->ClCode);
}
} else {
UInt i;
if (pp->PredFlags & SYSTEM_PRED_FLAGS) {
if (nclauses) {
QLYR_ERROR(INCONSISTENT_CPRED);
}
return;
}
Yap_Abolish(pp);
for (i = 0; i < nclauses; i++) {
char *base = (void *)read_uint(stream);
UInt size = read_uint(stream);
StaticClause *cl = (StaticClause *)Yap_AlwaysAllocCodeSpace(size);
LOCAL_HDiff = (char *)cl-base;
read_bytes(stream, cl, size);
RestoreStaticClause(cl PASS_REGS);
Yap_AssertzClause(pp, cl->ClCode);
}
}
}
static void
read_pred(IOSTREAM *stream, Term mod) {
UInt flags;
UInt nclauses, fl1;
PredEntry *ap;
ap = LookupPredEntry((PredEntry *)read_uint(stream));
flags = read_uint(stream);
nclauses = read_uint(stream);
if (ap->PredFlags & IndexedPredFlag) {
Yap_RemoveIndexation(ap);
}
fl1 = flags & STATIC_PRED_FLAGS;
ap->PredFlags &= ~STATIC_PRED_FLAGS;
ap->PredFlags |= fl1;
if (flags & NumberDBPredFlag) {
ap->src.IndxId = read_uint(stream);
} else {
ap->src.OwnerFile = (Atom)read_uint(stream);
if (ap->src.OwnerFile) {
ap->src.OwnerFile = AtomAdjust(ap->src.OwnerFile);
}
}
/* multifile predicates cannot reside in module 0 */
if (flags & MultiFileFlag && ap->ModuleOfPred == PROLOG_MODULE)
ap->ModuleOfPred = TermProlog;
read_clauses(stream, ap, nclauses, flags);
}
static void
read_ops(IOSTREAM *stream) {
Int x;
while ((x = read_tag(stream)) != QLY_END_OPS) {
Atom at = (Atom)read_uint(stream);
Term mod = (Term)read_uint(stream);
OpEntry *op;
at = AtomAdjust(at);
if (mod)
mod = MkAtomTerm(AtomAdjust(AtomOfTerm(mod)));
op = Yap_OpPropForModule(at, mod);
op->Prefix = read_bits16(stream);
op->Infix = read_bits16(stream);
op->Posfix = read_bits16(stream);
WRITE_UNLOCK(op->OpRWLock);
}
}
static void
read_module(IOSTREAM *stream) {
CACHE_REGS
qlf_tag_t x;
InitHash();
read_header(stream);
ReadHash(stream);
while ((x = read_tag(stream)) == QLY_START_MODULE) {
Term mod = (Term)read_uint(stream);
mod = MkAtomTerm(AtomAdjust(AtomOfTerm(mod)));
if (mod)
while ((x = read_tag(stream)) == QLY_START_PREDICATE) {
read_pred(stream, mod);
}
}
read_ops(stream);
CloseHash();
}
static Int
p_read_module_preds( USES_REGS1 )
{
IOSTREAM *stream;
Term t1 = Deref(ARG1);
if (IsVarTerm(t1)) {
Yap_Error(INSTANTIATION_ERROR,t1,"read_qly/3");
return FALSE;
}
if (!IsAtomTerm(t1)) {
Yap_Error(TYPE_ERROR_ATOM,t1,"read_qly/3");
return(FALSE);
}
if (!(stream = Yap_GetInputStream(AtomOfTerm(t1))) ) {
return FALSE;
}
read_module(stream);
return TRUE;
}
static void
ReInitCatch(void)
{
Term t = Yap_MkNewApplTerm(PredHandleThrow->FunctorOfPred, PredHandleThrow->ArityOfPE);
YAP_RunGoalOnce(t);
}
static Int
p_read_program( USES_REGS1 )
{
IOSTREAM *stream;
void YAP_Reset(void);
Term t1 = Deref(ARG1);
if (IsVarTerm(t1)) {
Yap_Error(INSTANTIATION_ERROR,t1,"read_program/3");
return FALSE;
}
if (!IsAtomTerm(t1)) {
Yap_Error(TYPE_ERROR_ATOM,t1,"read_program/3");
return(FALSE);
}
if (!(stream = Yap_GetInputStream(AtomOfTerm(t1))) ) {
return FALSE;
}
YAP_Reset();
read_module(stream);
Sclose( stream );
/* back to the top level we go */
Yap_CloseSlots(PASS_REGS1);
ReInitCatch();
Yap_RestartYap( 3 );
return TRUE;
}
int
Yap_Restore(char *s, char *lib_dir)
{
CACHE_REGS
IOSTREAM *stream = Yap_OpenRestore(s, lib_dir);
if (!stream)
return -1;
read_module(stream);
Sclose( stream );
ReInitCatch();
return DO_ONLY_CODE;
}
void Yap_InitQLYR(void)
{
Yap_InitCPred("$qload_module_preds", 1, p_read_module_preds, SyncPredFlag|HiddenPredFlag|UserCPredFlag);
Yap_InitCPred("$qload_program", 1, p_read_program, SyncPredFlag|HiddenPredFlag|UserCPredFlag);
if (FALSE) {
restore_codes();
}
}