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yap-6.3/C/tracer.c
Vitor Santos Costa 0d96197ddf X_API
2017-06-12 18:00:47 +01:00

567 lines
15 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 "YapHeap.h"
#include "YapText.h"
#include "Yatom.h"
#include "attvar.h"
#include "clause.h"
#include "iopreds.h"
#include "tracer.h"
#include "yapio.h"
static char *send_tracer_message(char *start, char *name, arity_t arity,
char *mname, CELL *args, char **s0, char *s,
char **top) {
bool expand = false;
size_t max = *top - (s + 1);
int d, min = 1024;
char *s1 = s;
do {
if (expand || max < 32) {
Int cbeg = s1 - *s0;
max = *top - *s0;
max += min;
*s0 = Realloc(*s0, max);
*top = *s0 + max;
max--;
s1 = *s0 + cbeg;
s = s1;
expand = false;
}
min = 1024;
if (name == NULL) {
#ifdef YAPOR
d = snprintf(s, max, "(%d)%s", worker_id, start);
#else
d = snprintf(s, max, "%s", start);
#endif
} else {
if (arity) {
if (args)
d = snprintf(s, max, "%s %s:%s(", start, mname, name);
else
d = snprintf(s, max, "%s %s:%s/%lu", start, mname, name,
(unsigned long int)arity);
} else {
d = snprintf(s, max, "%s %s:%s", start, mname, name);
}
}
if (d >= max) {
expand = true;
min = d + 1024;
continue;
}
max -= d;
s += d;
if (args) {
int i;
for (i = 0; i < arity; i++) {
if (i > 0) {
if (max > 16) {
*s++ = ',';
*s++ = ' ';
max-=2;
} else {
expand = true;
continue;
}
}
const char *sn = Yap_TermToString(args[i], NULL, LOCAL_encoding,
Quote_illegal_f | Handle_vars_f);
size_t sz;
if (sn == NULL) {
sn = "<* error *>";
}
sz = strlen(sn);
if (max <= sz) {
min = sz + 1024;
expand = true;
continue;
}
strcpy(s, sn);
s += sz;
max -= sz;
}
if (arity) {
*s++ = ' ';
*s++ = ')';
max -= 2;
}
}
} while (expand);
s[0] = '\0';
return s;
}
#if defined(__GNUC__)
unsigned long long vsc_count;
#else
unsigned long vsc_count;
#endif
#if THREADS
static int thread_trace;
#endif
/*
static int
check_trail_consistency(void) {
tr_fr_ptr ptr = TR;
while (ptr > (CELL *)LOCAL_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 IsAttVar(p) 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);
}
*/
volatile int v;
CELL old_value = 0L, old_value2 = 0L;
void jmp_deb(int), jmp_deb2(void);
void jmp_deb2(void) { fprintf(stderr, "Here\n"); }
void jmp_deb(int i) {
if (i)
printf("Here we go " Int_FORMAT "\n", old_value++);
if (old_value == 716)
jmp_deb2();
}
struct various_codes *sc;
/*
CELL array[332];
int found = FALSE;
static void
check_area(void)
{
int i, first = -1;
for (i= 0; i < 332; i++) {
if (array[i] !=((CELL *)0x187a800)[i]) {
if (first != -1) {
first = i;
found = TRUE;
}
fprintf(stderr,"%lld changed %d\n",vsc_count,i);
}
array[i] = ((CELL *)0x187a800)[i];
}
if (first != -1)
jmp_deb(i);
}
*/
// PredEntry *old_p[10000];
// Term old_x1[10000], old_x2[10000], old_x3[10000];
// static CELL oldv = 0;
bool low_level_trace__(yap_low_level_port port, PredEntry *pred, CELL *args) {
CACHE_REGS
char *s;
char *mname;
Int arity;
int l = push_text_stack();
/* extern int gc_calls; */
vsc_count++;
// if (HR < ASP ) return;
// fif (vsc_count == 12534) jmp_deb( 2 );
char *buf = Malloc(512), *top = buf + 511, *b = buf;
// if (!worker_id) return;
LOCK(Yap_low_level_trace_lock);
sc = Yap_heap_regs;
// if (vsc_count == 161862) jmp_deb(1);
#ifdef THREADS
LOCAL_ThreadHandle.thread_inst_count++;
#endif
#ifdef COMMENTED
b = snprintf(b, top - b, "in %p\n");
CELL *gc_ENV = ENV;
while (gc_ENV != NULL) { /* no more environments */
b = snprintf(b, top - b, "%ld\n", LCL0 - gc_ENV);
gc_ENV = (CELL *)gc_ENV[E_E]; /* link to prev
* environment */
}
return;
{
choiceptr b_p = B;
while (b_p) {
b = snprintf(b, top - b, "%p %ld\n", b_p,
Yap_op_from_opcode(b_p->cp_ap->opc));
b_p = b_p->cp_b;
}
}
{
choiceptr myB = B;
while (myB)
myB = myB->cp_b;
}
//*(H0+(0xb65f2850-0xb64b2008)/sizeof(CELL))==0xc ||
// 0x4fd4d
if (vsc_count > 1388060LL && vsc_count < 1388070LL) {
if (vsc_count == 1388061LL)
jmp_deb(1);
if (vsc_count % 1LL == 0) {
UInt sz = Yap_regp->H0_[17];
UInt end = sizeof(MP_INT) / sizeof(CELL) + sz + 1;
b = snprintf(b, top - b, "VAL %lld %d %x/%x\n", vsc_count, sz, H0[16],
H0[16 + end]);
}
} else
return;
{
tr_fr_ptr pt = (tr_fr_ptr)LOCAL_TrailBase;
if (pt[140].term == 0 && pt[140].value != 0)
jmp_deb(1);
}
if (worker_id != 04 || worker_id != 03)
return;
// if (vsc_count == 218280)
// vsc_xstop = 1;
if (vsc_count < 1468068888) {
UNLOCK(Yap_heap_regs->low_level_trace_lock);
return;
}
if (port != enter_pred || !pred || pred->ArityOfPE != 4 ||
strcmp(RepAtom(NameOfFunctor(pred->FunctorOfPred))->StrOfAE,
"in_between_target_phrases")) {
UNLOCK(Yap_heap_regs->low_level_trace_lock);
return;
}
if (vsc_count < 1246949400LL) {
UNLOCK(Yap_heap_regs->low_level_trace_lock);
return;
}
if (vsc_count == 1246949493LL)
vsc_xstop = TRUE;
if (vsc_count < 5646100000LL) {
UNLOCK(Yap_heap_regs->low_level_trace_lock);
return;
}
if (vsc_count == 5646100441LL)
vsc_xstop = TRUE;
if (vsc_count < 2923351500LL) {
UNLOCK(Yap_heap_regs->low_level_trace_lock);
return;
}
if (vsc_count == 123536441LL)
vsc_xstop = 1;
if (vsc_count < 5530257LL) {
UNLOCK(Yap_heap_regs->low_level_trace_lock);
return;
}
if (vsc_count == 9414280LL) {
vsc_xstop = TRUE;
}
if (vsc_count < 3399741LL) {
UNLOCK(Yap_heap_regs->low_level_trace_lock);
return;
}
if (TR_FZ > TR)
jmp_deb(1);
{
tr_fr_ptr pt = (tr_fr_ptr)LOCAL_TrailBase;
if (pt[153].term == 0 && pt[153].value == 0 && pt[154].term != 0 &&
pt[154].value != 0 && (TR > pt + 154 || TR_FZ > pt + 154))
jmp_deb(2);
if (pt[635].term == 0 && pt[635].value == 0 && pt[636].term != 0 &&
pt[636].value != 0 && (TR > pt + 636 || TR_FZ > pt + 636))
jmp_deb(3);
if (pt[138].term == 0 && pt[138].value == 0 && pt[139].term != 0 &&
pt[139].value != 0 && (TR > pt + 138 || TR_FZ > pt + 138))
jmp_deb(4);
}
if (vsc_count == 287939LL)
jmp_deb(1);
if (vsc_count == 173118LL)
jmp_deb(1);
if (!(vsc_count >= 287934LL && vsc_count <= 287939LL) &&
!(vsc_count >= 173100LL && vsc_count <= 173239LL) && vsc_count != -1) {
return;
}
if (vsc_count == 51021) {
printf("Here I go\n");
}
if (vsc_count < 52000) {
UNLOCK(Yap_heap_regs->low_level_trace_lock);
return;
}
if (vsc_count > 52000)
exit(0);
UNLOCK(Yap_heap_regs->low_level_trace_lock);
return;
if (vsc_count == 837074) {
printf("Here I go\n");
}
if (gc_calls < 1) {
UNLOCK(Yap_heap_regs->low_level_trace_lock);
return;
}
{
CELL *env_ptr = ENV;
PredEntry *p;
while (env_ptr) {
PredEntry *pe = EnvPreg(env_ptr[E_CP]);
if (p == pe) {
UNLOCK(Yap_heap_regs->low_level_trace_lock);
pop_text_stack(l);
ReleaseAndReturn(true);
}
if (env_ptr != NULL)
env_ptr = (CELL *)(env_ptr[E_E]);
}
printf("\n");
}
#endif
b += snprintf(b, top - b, Int_FORMAT " "UInt_FORMAT " ", vsc_count, LCL0 - (CELL *)B);
b += snprintf(b, top - b, Int_FORMAT " ", LCL0 - (CELL *)Yap_REGS.CUT_C_TOP);
#if defined(THREADS) || defined(YAPOR)
b += snprintf(b, top - b, "(%d)", worker_id);
#endif
/* check_trail_consistency(); */
if (pred == NULL) {
UNLOCK(Yap_low_level_trace_lock);
pop_text_stack(l);
ReleaseAndReturn(true);
}
if (pred->ModuleOfPred == PROLOG_MODULE) {
if (!LOCAL_do_trace_primitives) {
UNLOCK(Yap_low_level_trace_lock);
ReleaseAndReturn(true);
}
mname = "prolog";
} else {
mname = RepAtom(AtomOfTerm(Yap_Module_Name(pred)))->StrOfAE;
}
switch (port) {
case enter_pred:
arity = pred->ArityOfPE;
if (arity == 0) {
s = (char *)RepAtom((Atom)pred->FunctorOfPred)->StrOfAE;
} else {
s = (char *)RepAtom(NameOfFunctor((pred->FunctorOfPred)))->StrOfAE;
}
/* if ((pred->ModuleOfPred == 0) && (s[0] == '$'))
return; */
b = send_tracer_message("CALL: ", s, arity, mname, args, &buf, b, &top);
break;
case try_or:
b = send_tracer_message("TRY_OR ", NULL, 0, NULL, args, &buf, b, &top);
break;
case retry_or:
b = send_tracer_message("FAIL ", NULL, 0, NULL, args, &buf, b, &top);
b = send_tracer_message("RETRY_OR ", NULL, 0, NULL, args, &buf, b, &top);
break;
case retry_table_generator:
b = send_tracer_message("FAIL ", NULL, 0, NULL, args, &buf, b, &top);
mname = (char *)RepAtom(AtomOfTerm(Yap_Module_Name(pred)))->StrOfAE;
arity = pred->ArityOfPE;
if (arity == 0)
s = (char *)RepAtom((Atom)pred->FunctorOfPred)->StrOfAE;
else
s = (char *)RepAtom(NameOfFunctor((pred->FunctorOfPred)))->StrOfAE;
b = send_tracer_message("RETRY GENERATOR: ", s, arity, mname, args, &buf, b,
&top);
break;
case retry_table_consumer:
b = send_tracer_message("FAIL ", NULL, 0, NULL, args, &buf, b, &top);
mname = (char *)RepAtom(AtomOfTerm(Yap_Module_Name(pred)))->StrOfAE;
arity = pred->ArityOfPE;
if (arity == 0) {
s = (char *)RepAtom((Atom)pred->FunctorOfPred)->StrOfAE;
b = send_tracer_message("RETRY CONSUMER: ", s, 0, mname, NULL, &buf, b,
&top);
} else {
s = (char *)RepAtom(NameOfFunctor((pred->FunctorOfPred)))->StrOfAE;
b = send_tracer_message("RETRY CONSUMER: ", s, pred->ArityOfPE, mname,
NULL, &buf, b, &top);
}
break;
case retry_table_loader:
b = send_tracer_message("FAIL ", NULL, 0, NULL, args, &buf, b, &top);
if (pred == UndefCode) {
b = send_tracer_message("RETRY LOADER ", NULL, 0, NULL, NULL, &buf, b,
&top);
} else {
mname = (char *)RepAtom(AtomOfTerm(Yap_Module_Name(pred)))->StrOfAE;
arity = pred->ArityOfPE;
if (arity == 0)
s = (char *)RepAtom((Atom)pred->FunctorOfPred)->StrOfAE;
else
s = (char *)RepAtom(NameOfFunctor((pred->FunctorOfPred)))->StrOfAE;
b = send_tracer_message("RETRY LOADER: ", s, 0, mname, NULL, &buf, b,
&top);
}
break;
case retry_pred:
b = send_tracer_message("FAIL ", NULL, 0, NULL, args, &buf, b, &top);
if (pred != NULL) {
mname = (char *)RepAtom(AtomOfTerm(Yap_Module_Name(pred)))->StrOfAE;
arity = pred->ArityOfPE;
if (pred->ModuleOfPred == IDB_MODULE) {
s = "recorded";
arity = 3;
} else if (arity == 0) {
s = (char *)RepAtom((Atom)pred->FunctorOfPred)->StrOfAE;
} else {
s = (char *)RepAtom(NameOfFunctor((pred->FunctorOfPred)))->StrOfAE;
}
b = send_tracer_message("RETRY: ", s, arity, mname, args, &buf, b, &top);
}
break;
}
UNLOCK(Yap_low_level_trace_lock);
#if __ANDROID__
__android_log_print(ANDROID_LOG_DEBUG, "YAPDroid", "%s\n", buf);
#else
*b++ = '\n';
*b = '\0';
fputs(buf, stderr);
#endif
pop_text_stack(l);
ReleaseAndReturn(true);
}
void toggle_low_level_trace(void) {
Yap_do_low_level_trace = !Yap_do_low_level_trace;
}
static Int start_low_level_trace(USES_REGS1) {
Yap_do_low_level_trace = TRUE;
return (TRUE);
}
static Int total_choicepoints(USES_REGS1) {
return Yap_unify(MkIntegerTerm(LOCAL_total_choicepoints), ARG1);
}
static Int reset_total_choicepoints(USES_REGS1) {
LOCAL_total_choicepoints = 0;
return TRUE;
}
static Int show_low_level_trace(USES_REGS1) {
fprintf(stderr, "Call counter=" Int_FORMAT "\n", vsc_count);
return (TRUE);
}
#ifdef THREADS
static Int start_low_level_trace2(USES_REGS1) {
thread_trace = IntegerOfTerm(Deref(ARG1)) + 1;
Yap_do_low_level_trace = TRUE;
return (TRUE);
}
#endif
#include <stdio.h>
/** @pred stop_low_level_trace
Stop displaying messages at procedure entry and retry.
Note that using this compile-time option will slow down execution, even if
messages are
not being output.
*/
static Int stop_low_level_trace(USES_REGS1) {
Yap_do_low_level_trace = FALSE;
LOCAL_do_trace_primitives = TRUE;
#if DEBUG_LOCKS
debug_locks = TRUE;
#endif
return (TRUE);
}
volatile int v_wait;
static Int vsc_wait(USES_REGS1) {
while (!v_wait)
;
return true;
}
static Int vsc_go(USES_REGS1) {
v_wait = 1;
return true;
}
void Yap_InitLowLevelTrace(void) {
Yap_InitCPred("start_low_level_trace", 0, start_low_level_trace,
SafePredFlag);
Yap_InitCPred("$start_low_level_trace", 0, start_low_level_trace,
SafePredFlag);
/** @pred start_low_level_trace
Begin display of messages at procedure entry and retry.
*/
#if THREADS
Yap_InitCPred("start_low_level_trace", 1, start_low_level_trace2,
SafePredFlag);
#endif
Yap_InitCPred("stop_low_level_trace", 0, stop_low_level_trace, SafePredFlag);
Yap_InitCPred("show_low_level_trace", 0, show_low_level_trace, SafePredFlag);
Yap_InitCPred("$stop_low_level_trace", 0, stop_low_level_trace, SafePredFlag);
Yap_InitCPred("total_choicepoints", 1, total_choicepoints, SafePredFlag);
Yap_InitCPred("reset_total_choicepoints", 0, reset_total_choicepoints,
SafePredFlag);
Yap_InitCPred("vsc_wait", 0, vsc_wait, SafePredFlag);
Yap_InitCPred("vsc_go", 0, vsc_go, SafePredFlag);
}
#else
static null(USES_REGS1) { return true; }
void Yap_InitLowLevelTrace(void) {
Yap_InitCPred("$start_low_level_trace", 0, null,
SafePredFlag | HiddenPredFlag);
Yap_InitCPred("$stop_low_level_trace", 0, null,
SafePredFlag | HiddenPredFlag);
}
#endif