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yap-6.3/C/tracer.c
2002-04-06 03:54:18 +00:00

229 lines
5.7 KiB
C

/*************************************************************************
* *
* YAP Prolog @(#)amidefs.h 1.3 3/15/90
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: tracer.h *
* Last rev: *
* mods: *
* comments: definitions for low level tracer *
* *
*************************************************************************/
#include "Yap.h"
#ifdef LOW_LEVEL_TRACER
#include "Yatom.h"
#include "Heap.h"
#include "yapio.h"
#include "tracer.h"
STATIC_PROTO(int TracePutchar, (int, int));
STATIC_PROTO(void send_tracer_message, (char *, char *, Int, char *, CELL *));
int do_low_level_trace = FALSE;
static int do_trace_primitives = TRUE;
static int
TracePutchar(int sno, int ch)
{
return(YP_putc(ch, YP_stderr)); /* use standard error stream, which is supposed to be 2*/
}
static void
send_tracer_message(char *start, char *name, Int arity, char *mname, CELL *args)
{
if (name == NULL) {
#ifdef YAPOR
YP_fprintf(YP_stderr, "(%d)%s", worker_id, start);
#else
YP_fprintf(YP_stderr, "%s", start);
#endif
} else {
int i;
if (arity) {
YP_fprintf(YP_stderr, "%s %s:%s(", start, mname, name);
} else {
YP_fprintf(YP_stderr, "%s %s:%s", start, mname, name);
}
for (i= 0; i < arity; i++) {
if (i > 0) YP_fprintf(YP_stderr, ",");
#if DEBUG
#if COROUTINING
Portray_delays = TRUE;
#endif
#endif
plwrite(args[i], TracePutchar, 4);
#if DEBUG
#if COROUTINING
Portray_delays = FALSE;
#endif
#endif
}
if (arity) YP_fprintf(YP_stderr, ")");
}
YP_fprintf(YP_stderr, "\n");
}
#if defined(__GNUC__)
unsigned long long vsc_count;
#else
unsigned long vsc_count;
#endif
/*
static int
check_trail_consistency(void) {
tr_fr_ptr ptr = TR;
while (ptr > (CELL *)TrailBase) {
ptr = --ptr;
if (!IsVarTerm(TrailTerm(ptr))) {
if (IsApplTerm(TrailTerm(ptr))) {
CELL *cptr = (CELL *)ptr;
ptr = (tr_fr_ptr)(cptr-1);
} else {
if (IsPairTerm(TrailTerm(ptr))) {
CELL *p = RepPair(TrailTerm(ptr));
if (p < H0) continue;
}
printf("Oops at call %ld, B->cp(%p) TR(%p) pt(%p)\n", vsc_count,B->cp_tr, TR, ptr);
return(FALSE);
}
}
}
return(TRUE);
}
*/
void
low_level_trace(yap_low_level_port port, PredEntry *pred, CELL *args)
{
char *s;
char *mname;
Int arity;
/* extern int gc_calls; */
vsc_count++;
/* if (vsc_count < 84600) return; */
/*
if (vsc_count == 4376) {
printf("Here I go\n");
}
*/
/* if (vsc_count > 500000) exit(0); */
/* if (gc_calls < 1) return;*/
#if defined(__GNUC__)
YP_fprintf(YP_stderr,"%llu ", vsc_count);
#endif
/* check_trail_consistency(); */
if (pred == NULL) {
return;
}
if (pred->ModuleOfPred == 0 && !do_trace_primitives) {
return;
}
switch (port) {
case enter_pred:
mname = RepAtom(AtomOfTerm(Module_Name((CODEADDR)pred)))->StrOfAE;
arity = pred->ArityOfPE;
if (arity == 0)
s = RepAtom((Atom)pred->FunctorOfPred)->StrOfAE;
else
s = RepAtom(NameOfFunctor((pred->FunctorOfPred)))->StrOfAE;
/* if ((pred->ModuleOfPred == 0) && (s[0] == '$'))
return; */
send_tracer_message("CALL: ", s, arity, mname, args);
break;
case try_or:
send_tracer_message("TRY_OR ", NULL, 0, NULL, args);
break;
case retry_or:
send_tracer_message("FAIL ", NULL, 0, NULL, args);
send_tracer_message("RETRY_OR ", NULL, 0, NULL, args);
break;
case retry_table_producer:
send_tracer_message("FAIL ", NULL, 0, NULL, args);
/* HANDLE METACALLS */
if (pred == NULL) {
send_tracer_message("RETRY TABLE: ", NULL, 0, NULL, args);
} else {
mname = RepAtom(AtomOfTerm(Module_Name((CODEADDR)pred)))->StrOfAE;
arity = pred->ArityOfPE;
if (arity == 0)
s = RepAtom((Atom)pred->FunctorOfPred)->StrOfAE;
else
s = RepAtom(NameOfFunctor((pred->FunctorOfPred)))->StrOfAE;
/* if ((pred->ModuleOfPred == 0) && (s[0] == '$'))
return; */
send_tracer_message("RETRY PRODUCER: ", s, 0, mname, NULL);
}
break;
case retry_table_consumer:
send_tracer_message("FAIL ", NULL, 0, NULL, args);
/* HANDLE METACALLS */
if (pred == NULL) {
send_tracer_message("RETRY TABLE: ", NULL, 0, NULL, args);
} else {
mname = RepAtom(AtomOfTerm(Module_Name((CODEADDR)pred)))->StrOfAE;
arity = pred->ArityOfPE;
if (arity == 0)
s = RepAtom((Atom)pred->FunctorOfPred)->StrOfAE;
else
s = RepAtom(NameOfFunctor((pred->FunctorOfPred)))->StrOfAE;
/* if ((pred->ModuleOfPred == 0) && (s[0] == '$'))
return; */
send_tracer_message("RETRY CONSUMER: ", s, 0, mname, NULL);
}
break;
case retry_pred:
mname = RepAtom(AtomOfTerm(Module_Name((CODEADDR)pred)))->StrOfAE;
arity = pred->ArityOfPE;
if (arity == 0)
s = RepAtom((Atom)pred->FunctorOfPred)->StrOfAE;
else
s = RepAtom(NameOfFunctor((pred->FunctorOfPred)))->StrOfAE;
/* if ((pred->ModuleOfPred == 0) && (s[0] == '$'))
return; */
send_tracer_message("FAIL ", NULL, 0, NULL, args);
send_tracer_message("RETRY: ", s, arity, mname, args);
break;
}
}
void
toggle_low_level_trace(void)
{
do_low_level_trace = !do_low_level_trace;
}
static Int p_start_low_level_trace(void)
{
do_low_level_trace = TRUE;
return(TRUE);
}
static Int p_stop_low_level_trace(void)
{
do_low_level_trace = FALSE;
do_trace_primitives = TRUE;
return(TRUE);
}
void
InitLowLevelTrace(void)
{
InitCPred("start_low_level_trace", 0, p_start_low_level_trace, SafePredFlag);
InitCPred("stop_low_level_trace", 0, p_stop_low_level_trace, SafePredFlag);
}
#endif