53c1eb54a2
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@998 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
229 lines
7.3 KiB
C
229 lines
7.3 KiB
C
/*************************************************************************
|
|
* *
|
|
* YAP Prolog %W% %G% *
|
|
* *
|
|
* Yap Prolog was developed at NCCUP - Universidade do Porto *
|
|
* *
|
|
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
|
|
* *
|
|
**************************************************************************
|
|
* *
|
|
* File: clause.h *
|
|
* Last rev: *
|
|
* mods: *
|
|
* comments: clause info *
|
|
* *
|
|
*************************************************************************/
|
|
|
|
#include "Yatom.h"
|
|
#include "Heap.h"
|
|
|
|
/* consulting files */
|
|
|
|
typedef union CONSULT_OBJ {
|
|
char *filename;
|
|
int mode;
|
|
Prop p;
|
|
UInt c;
|
|
} consult_obj;
|
|
|
|
/* Either we are assembling clauses or indexing code */
|
|
|
|
#define ASSEMBLING_CLAUSE 0
|
|
#define ASSEMBLING_INDEX 1
|
|
#define ASSEMBLING_EINDEX 2
|
|
|
|
#define NextDynamicClause(X) (((yamop *)X)->u.ld.d)
|
|
|
|
#define PredFirstClause 0
|
|
#define PredMiddleClause 1
|
|
#define PredLastClause 2
|
|
|
|
typedef struct logic_upd_index {
|
|
CELL ClFlags;
|
|
UInt ClRefCount;
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
/* A lock for manipulating the clause */
|
|
lockvar ClLock;
|
|
#endif
|
|
union {
|
|
PredEntry *pred;
|
|
struct logic_upd_index *ParentIndex;
|
|
} u;
|
|
struct logic_upd_index *SiblingIndex;
|
|
struct logic_upd_index *ChildIndex;
|
|
/* The instructions, at least one of the form sl */
|
|
yamop ClCode[MIN_ARRAY];
|
|
} LogUpdIndex;
|
|
|
|
/* The ordering of the first 3 fields should be compatible with dbrefs */
|
|
typedef struct logic_upd_clause {
|
|
Functor Id; /* allow pointers to this struct to id */
|
|
/* as dbref */
|
|
/* A set of flags describing info on the clause */
|
|
/* A set of flags describing info on the clause */
|
|
CELL ClFlags;
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
/* A lock for manipulating the clause */
|
|
lockvar ClLock;
|
|
#endif
|
|
/* extra clause information for logical update indices and facts */
|
|
/* indices that may still backtrack to this clause */
|
|
UInt ClRefCount;
|
|
/* data for clauses with environments */
|
|
yamop *ClExt;
|
|
DBTerm *ClSource;
|
|
/* doubly linked list of clauses */
|
|
struct logic_upd_clause *ClPrev, *ClNext;
|
|
/* parent pointer */
|
|
PredEntry *ClPred;
|
|
/* The instructions, at least one of the form sl */
|
|
yamop ClCode[MIN_ARRAY];
|
|
} LogUpdClause;
|
|
|
|
typedef struct dynamic_clause {
|
|
/* A set of flags describing info on the clause */
|
|
CELL ClFlags;
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
/* A lock for manipulating the clause */
|
|
lockvar ClLock;
|
|
#endif
|
|
UInt ClRefCount;
|
|
yamop *ClPrevious; /* immediate update clause */
|
|
/* The instructions, at least one of the form sl */
|
|
yamop ClCode[MIN_ARRAY];
|
|
} DynamicClause;
|
|
|
|
typedef struct static_index {
|
|
/* A set of flags describing info on the clause */
|
|
CELL ClFlags;
|
|
struct static_index *SiblingIndex;
|
|
struct static_index *ChildIndex;
|
|
/* The instructions, at least one of the form sl */
|
|
yamop ClCode[MIN_ARRAY];
|
|
} StaticIndex;
|
|
|
|
typedef struct static_clause {
|
|
/* A set of flags describing info on the clause */
|
|
Functor Id;
|
|
CELL ClFlags;
|
|
union {
|
|
DBTerm *ClSource;
|
|
PredEntry *ClPred;
|
|
} usc;
|
|
struct static_clause *ClNext;
|
|
/* The instructions, at least one of the form sl */
|
|
yamop ClCode[MIN_ARRAY];
|
|
} StaticClause;
|
|
|
|
typedef struct dead_clause {
|
|
CELL ClFlags;
|
|
struct dead_clause *NextCl; /* dead clause */
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
/* A lock for manipulating the clause */
|
|
lockvar ClLock;
|
|
UInt ref_count;
|
|
#endif
|
|
} DeadClause;
|
|
|
|
typedef union clause_obj {
|
|
struct logic_upd_clause luc;
|
|
struct logic_upd_index lui;
|
|
struct dynamic_clause ic;
|
|
struct static_clause sc;
|
|
struct static_index si;
|
|
} ClauseUnion;
|
|
|
|
#define ClauseCodeToDynamicClause(p) ((DynamicClause *)((CODEADDR)(p)-(CELL)(((DynamicClause *)NULL)->ClCode)))
|
|
#define ClauseCodeToStaticClause(p) ((StaticClause *)((CODEADDR)(p)-(CELL)(((StaticClause *)NULL)->ClCode)))
|
|
#define ClauseCodeToLogUpdClause(p) ((LogUpdClause *)((CODEADDR)(p)-(CELL)(((LogUpdClause *)NULL)->ClCode)))
|
|
#define ClauseCodeToLogUpdIndex(p) ((LogUpdIndex *)((CODEADDR)(p)-(CELL)(((LogUpdIndex *)NULL)->ClCode)))
|
|
#define ClauseCodeToStaticIndex(p) ((StaticIndex *)((CODEADDR)(p)-(CELL)(((StaticIndex *)NULL)->ClCode)))
|
|
|
|
#define ClauseFlagsToDynamicClause(p) ((DynamicClause *)(p))
|
|
#define ClauseFlagsToLogUpdClause(p) ((LogUpdClause *)((CODEADDR)(p)-(CELL)(&(((LogUpdClause *)NULL)->ClFlags))))
|
|
#define ClauseFlagsToLogUpdIndex(p) ((LogUpdIndex *)((CODEADDR)(p)-(CELL)(&(((LogUpdIndex *)NULL)->ClFlags))))
|
|
#define ClauseFlagsToStaticClause(p) ((StaticClause *)(p))
|
|
|
|
#define DynamicFlags(X) (ClauseCodeToDynamicClause(X)->ClFlags)
|
|
|
|
#define DynamicLock(X) (ClauseCodeToDynamicClause(X)->ClLock)
|
|
|
|
#if defined(YAPOR) || defined(THREADS)
|
|
#define INIT_CLREF_COUNT(X) (X)->ClRefCount = 0
|
|
#define INC_CLREF_COUNT(X) (X)->ClRefCount++
|
|
#define DEC_CLREF_COUNT(X) (X)->ClRefCount--
|
|
#define CL_IN_USE(X) ((X)->ClRefCount)
|
|
#else
|
|
#define INIT_CLREF_COUNT(X)
|
|
#define INC_CLREF_COUNT(X)
|
|
#define DEC_CLREF_COUNT(X)
|
|
#define CL_IN_USE(X) ((X)->ClFlags & InUseMask || (X)->ClRefCount)
|
|
#endif
|
|
|
|
/* amasm.c */
|
|
wamreg STD_PROTO(Yap_emit_x,(CELL));
|
|
wamreg STD_PROTO(Yap_compile_cmp_flags,(PredEntry *));
|
|
void STD_PROTO(Yap_InitComma,(void));
|
|
|
|
/* cdmgr.c */
|
|
void STD_PROTO(Yap_RemoveLogUpdIndex,(LogUpdIndex *));
|
|
void STD_PROTO(Yap_IPred,(PredEntry *));
|
|
void STD_PROTO(Yap_addclause,(Term,yamop *,int,Term));
|
|
void STD_PROTO(Yap_add_logupd_clause,(PredEntry *,LogUpdClause *,int));
|
|
void STD_PROTO(Yap_kill_iblock,(ClauseUnion *,ClauseUnion *,PredEntry *));
|
|
void STD_PROTO(Yap_cleanup_dangling_indices,(yamop *,yamop *,yamop *,yamop *));
|
|
void STD_PROTO(Yap_EraseStaticClause,(StaticClause *, Term));
|
|
ClauseUnion *STD_PROTO(Yap_find_owner_index,(yamop *, PredEntry *));
|
|
|
|
/* dbase.c */
|
|
void STD_PROTO(Yap_ErCl,(DynamicClause *));
|
|
void STD_PROTO(Yap_ErLogUpdCl,(LogUpdClause *));
|
|
void STD_PROTO(Yap_ErLogUpdIndex,(LogUpdIndex *));
|
|
|
|
/* exec.c */
|
|
Term STD_PROTO(Yap_cp_as_integer,(choiceptr));
|
|
|
|
/* index.c */
|
|
yamop *STD_PROTO(Yap_PredIsIndexable,(PredEntry *));
|
|
yamop *STD_PROTO(Yap_ExpandIndex,(PredEntry *));
|
|
yamop *STD_PROTO(Yap_CleanUpIndex,(struct logic_upd_index *));
|
|
void STD_PROTO(Yap_AddClauseToIndex,(PredEntry *,yamop *,int));
|
|
void STD_PROTO(Yap_RemoveClauseFromIndex,(PredEntry *,yamop *));
|
|
LogUpdClause *STD_PROTO(Yap_NthClause,(PredEntry *,Int));
|
|
LogUpdClause *STD_PROTO(Yap_FollowIndexingCode,(PredEntry *,yamop *,Term,Term,Term, yamop *,yamop *));
|
|
|
|
#if USE_THREADED_CODE
|
|
|
|
#define OP_HASH_SIZE 2048
|
|
|
|
static inline int
|
|
rtable_hash_op(OPCODE opc, int hash_mask) {
|
|
return((((CELL)opc) >> 3) & hash_mask);
|
|
}
|
|
|
|
/* given an opcode find the corresponding opnumber. This should make
|
|
switches on ops a much easier operation */
|
|
static inline op_numbers
|
|
Yap_op_from_opcode(OPCODE opc)
|
|
{
|
|
int j = rtable_hash_op(opc,OP_HASH_SIZE-1);
|
|
|
|
while (OP_RTABLE[j].opc != opc) {
|
|
if (j == OP_HASH_SIZE-1) {
|
|
j = 0;
|
|
} else {
|
|
j++;
|
|
}
|
|
}
|
|
return OP_RTABLE[j].opnum;
|
|
}
|
|
#else
|
|
static inline op_numbers
|
|
Yap_op_from_opcode(OPCODE opc)
|
|
{
|
|
return((op_numbers)opc);
|
|
}
|
|
#endif /* USE_THREADED_CODE */
|
|
|