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errors

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This commit is contained in:
Vítor Santos Costa
2018-04-02 14:49:45 +01:00
parent 48bcffdce7
commit c1d81ea7c6
28 changed files with 1237 additions and 1059 deletions
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688
C/errors.c
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@@ -32,6 +32,125 @@
#endif
#include "Foreign.h"
static void print_key_b(const char *key, bool v)
{
const char *b = v ? "true" : "false";
fprintf(stderr,"%s: %s\n", key, b);
}
static void print_key_i(const char *key, YAP_Int v)
{
fprintf(stderr,"%s: " Int_FORMAT "\n", key, v);
}
static void print_key_s(const char *key, const char *v)
{
fprintf(stderr,"%s: %s\n", key, v);
}
static void printErr(yap_error_descriptor_t *i) {
if (i->errorNo == YAP_NO_ERROR) {
return;
}
print_key_i( "errorNo", i->errorNo );
print_key_i("errorClass", i->errorClass);
print_key_s("errorAsText", i->errorAsText);
print_key_s( "errorGoal", i->errorGoal);
print_key_s( "classAsText", i->classAsText);
print_key_i( "errorLineq", i->errorLine );
print_key_s( "errorFunction", i->errorFunction);
print_key_s( "errorFile", i->errorFile);
print_key_i( "prologPredLine", i->prologPredLine);
print_key_i( "prologPredFirstLine", i->prologPredFirstLine);
print_key_i( "prologPredLastLine", i->prologPredLastLine);
print_key_s( "prologPredName", i->prologPredName);
print_key_i( "prologPredArity", i->prologPredArity);
print_key_s( "prologPredModule", i->prologPredModule);
print_key_s( "prologPredFile", i->prologPredFile);
print_key_i( "prologParserPos", i->prologParserPos);
print_key_i( "prologParserLine", i->prologParserLine);
print_key_i( "prologParserFirstLine", i->prologParserFirstLine);
print_key_i( "prologParserLastLine", i->prologParserLastLine);
print_key_s( "prologParserText", i->prologParserText);
print_key_s( "prologParserFile", i->prologParserFile);
print_key_b( "prologConsulting", i->prologConsulting);
print_key_s( "culprit", i->culprit);
if (i->errorMsgLen) {
print_key_s( "errorMsg", i->errorMsg);
print_key_i( "errorMsgLen", i->errorMsgLen);
}
}
static YAP_Term add_key_b(const char *key, bool v, YAP_Term o0)
{
YAP_Term tkv[2];
tkv[1] = v ? TermTrue : TermFalse;
tkv[0] = MkStringTerm(key);
Term node = Yap_MkApplTerm( FunctorEq, 2, tkv);
return MkPairTerm(node, o0);
}
static YAP_Term add_key_i(const char *key, YAP_Int v, YAP_Term o0)
{
YAP_Term tkv[2];
tkv[1] = MkIntegerTerm(v), tkv[0] = MkStringTerm(key);
Term node = Yap_MkApplTerm( FunctorEq, 2, tkv);
return MkPairTerm(node, o0);
}
static YAP_Term add_key_s(const char *key, const char *v, YAP_Term o0)
{
Term tkv[2];
if (!v || v[0] == '\n')
return o0;
tkv[1] = MkStringTerm(v), tkv[0] = MkStringTerm(key);
Term node = Yap_MkApplTerm( FunctorEq, 2, tkv);
return MkPairTerm(node, o0);
}
static Term err2list(yap_error_descriptor_t *i) {
Term o = TermNil;
if (i->errorNo == YAP_NO_ERROR) {
return o;
}
o = add_key_i( "errorNo", i->errorNo, o );
o = add_key_i("errorClass", i->errorClass, o);
o = add_key_s("errorAsText", i->errorAsText, o);
o = add_key_s( "errorGoal", i->errorGoal, o);
o = add_key_s( "classAsText", i->classAsText, o);
o = add_key_i( "errorLineq", i->errorLine, o );
o = add_key_s( "errorFunction", i->errorFunction, o);
o = add_key_s( "errorFile", i->errorFile, o);
o = add_key_i( "prologPredLine", i->prologPredLine, o);
o = add_key_i( "prologPredFirstLine", i->prologPredFirstLine, o);
o = add_key_i( "prologPredLastLine", i->prologPredLastLine, o);
o = add_key_s( "prologPredName", i->prologPredName, o);
o = add_key_i( "prologPredArity", i->prologPredArity, o);
o = add_key_s( "prologPredModule", i->prologPredModule, o);
o = add_key_s( "prologPredFile", i->prologPredFile, o);
o = add_key_i( "prologParserPos", i->prologParserPos, o);
o = add_key_i( "prologParserLine", i->prologParserLine, o);
o = add_key_i( "prologParserFirstLine", i->prologParserFirstLine, o);
o = add_key_i( "prologParserLastLine", i->prologParserLastLine, o);
o = add_key_s( "prologParserText", i->prologParserText, o);
o = add_key_s( "prologParserFile", i->prologParserFile, o);
o = add_key_b( "prologConsulting", i->prologConsulting, o);
o = add_key_s( "culprit", i->culprit, o);
if (i->errorMsgLen) {
o = add_key_s( "errorMsg", i->errorMsg, o);
o = add_key_i( "errorMsgLen", i->errorMsgLen, o);
}
return o;
}
bool Yap_Warning(const char *s, ...) {
CACHE_REGS
va_list ap;
@@ -92,7 +211,7 @@ void Yap_InitError__(const char *file, const char *function, int lineno, yap_err
} else
return;
va_end(ap);
if (LOCAL_ActiveError->status) {
if (LOCAL_ActiveError->errorNo != YAP_NO_ERROR) {
Yap_exit(1);
}
LOCAL_ActiveError->errorNo = e;
@@ -232,7 +351,7 @@ int Yap_SWIHandleError(const char *s, ...) {
void Yap_RestartYap(int flag) {
CACHE_REGS
fprintf(stderr,"HR=%p\n", HR);
fprintf(stderr,"call siglongjmp HR=%p\n", HR);
#if PUSH_REGS
restore_absmi_regs(&Yap_standard_regs);
#endif
@@ -283,47 +402,54 @@ static char tmpbuf[YAP_BUF_SIZE];
#undef E2
#undef END_ERRORS
#define BEGIN_ERROR_CLASSES() \
static Term mkerrorct(yap_error_class_number c, Term *ts) { \
switch (c) {
#define BEGIN_ERROR_CLASSES() \
static Atom mkerrorct(yap_error_class_number c) { \
switch (c) {
#define ECLASS(CL, A, B) \
case CL: \
if (A == 0) \
return MkAtomTerm(Yap_LookupAtom(A)); \
else { \
return Yap_MkApplTerm(Yap_MkFunctor(Yap_LookupAtom(A), B), B, ts); \
}
#define ECLASS(CL, A, B) \
case CL: \
return Yap_LookupAtom(A); \
#define END_ERROR_CLASSES() \
} \
return TermNil; \
#define END_ERROR_CLASSES() \
} \
return NULL; \
}
#define BEGIN_ERRORS() \
static Term mkerrort(yap_error_number e, Term *ts) { \
switch (e) {
#define BEGIN_ERRORS() \
static Term mkerrort(yap_error_number e, Term culprit, Term info) { \
switch (e) {
#define E0(A, B) \
case A: \
return mkerrorct(B, ts);
#define E0(A, B) \
case A: { \
Term ft[2]; \
ft[0] = MkAtomTerm(mkerrorct(A)); \
ft[1] = info; \
return Yap_MkApplTerm(FunctorError,2,ft); }
#define E(A, B, C) \
case A: \
ts -= 1; \
ts[0] = MkAtomTerm(Yap_LookupAtom(C)); \
return mkerrorct(B, ts);
#define E(A, B, C) \
case A: \
{ Term ft[2], nt[2]; \
ft[0] = Yap_MkNewApplTerm(Yap_MkFunctor(mkerrorct(B),2), 2); \
nt[1] = MkAtomTerm(Yap_LookupAtom(C)); \
RESET_VARIABLE(nt+2); Yap_unify(nt[2], culprit); \
ft[1] = info; \
return Yap_MkApplTerm(FunctorError,2,ft); }
#define E2(A, B, C, D) \
case A: \
ts -= 2; \
ts[0] = MkAtomTerm(Yap_LookupAtom(C)); \
ts[1] = MkAtomTerm(Yap_LookupAtom(D)); \
return mkerrorct(B, ts);
#define E2(A, B, C, D) \
case A: \
{ \
Term ft[3], nt[2]; \
ft[0] = Yap_MkNewApplTerm(Yap_MkFunctor(mkerrorct(B),3), 3); \
nt[1] = MkAtomTerm(Yap_LookupAtom(C)); \
nt[2] = MkAtomTerm(Yap_LookupAtom(D)); \
RESET_VARIABLE(nt+3); Yap_unify(nt[3], culprit); \
ft[1] = info; \
return Yap_MkApplTerm(FunctorError,2,ft); \
}
#define END_ERRORS() \
} \
return TermNil; \
#define END_ERRORS() \
} \
return TermNil; \
}
#include "YapErrors.h"
@@ -334,14 +460,16 @@ void Yap_pushErrorContext(yap_error_descriptor_t *new_error) {
LOCAL_ActiveError = new_error;
}
static void
reset_error_description(void) {
yap_error_descriptor_t *bf = LOCAL_ActiveError->top_error;
if (Yap_HasException())
memset(LOCAL_ActiveError, 0, sizeof(*LOCAL_ActiveError));
LOCAL_ActiveError->top_error = bf;
/* static void */
/* reset_error_description(void) { */
/* yap_error_descriptor_t *bf = LOCAL_ActiveError->top_error; */
/* if (Yap_HasException()) */
/* memset(LOCAL_ActiveError, 0, sizeof(*LOCAL_ActiveError)); */
/* LOCAL_ActiveError->top_error = bf; */
/* } */
}
yap_error_descriptor_t *Yap_popErrorContext(bool pass) {
if (pass && LOCAL_ActiveError->top_error->errorNo == YAP_NO_ERROR &&
@@ -373,9 +501,8 @@ void Yap_ThrowError__(const char *file, const char *function, int lineno,
}
if (LOCAL_RestartEnv) {
Yap_RestartYap(5);
} else {
exit(5);
}
}
Yap_exit(5);
}
/**
@@ -413,268 +540,214 @@ void Yap_ThrowError__(const char *file, const char *function, int lineno,
*/
yamop *Yap_Error__(bool throw, const char *file, const char *function, int lineno,
yap_error_number type, Term where, ...) {
CACHE_REGS
va_list ap;
CELL nt[3];
Functor fun;
Term error_t;
Term comment;
char *fmt;
char s[MAXPATHLEN];
CACHE_REGS
va_list ap;
char *fmt;
char s[MAXPATHLEN];
/* disallow recursive error handling */
if (LOCAL_PrologMode & InErrorMode) {
fprintf(stderr, "%% ERROR WITHIN ERROR %d: %s\n", LOCAL_Error_TYPE, tmpbuf);
Yap_RestartYap(1);
}
if (LOCAL_DoingUndefp && type == EVALUATION_ERROR_UNDEFINED) {
P = FAILCODE;
CalculateStackGap(PASS_REGS1);
return P;
}
LOCAL_ActiveError->errorNo = type;
LOCAL_ActiveError->errorAsText = Yap_errorName(type);
LOCAL_ActiveError->errorClass = Yap_errorClass(type);
LOCAL_ActiveError->classAsText =
Yap_errorClassName(LOCAL_ActiveError->errorClass);
LOCAL_ActiveError->errorLine = lineno;
LOCAL_ActiveError->errorFunction = function;
LOCAL_ActiveError->errorFile = file;
Yap_find_prolog_culprit(PASS_REGS1);
LOCAL_PrologMode |= InErrorMode;
Yap_ClearExs();
if (where == 0L) {
where = TermNil;
}
// first, obtain current location
// sprintf(LOCAL_FileNameBuf, "%s:%d in C-function %s ", file, lineno,
// function);
// tf = MkAtomTerm(Yap_LookupAtom(LOCAL_FileNameBuf));
#if DEBUG_STRICT
if (Yap_heap_regs && !(LOCAL_PrologMode & BootMode))
fprintf(stderr, "***** Processing Error %d (%lx,%x) %s***\n", type,
(unsigned long int)LOCAL_Signals, LOCAL_PrologMode, fmt);
else
fprintf(stderr, "***** Processing Error %d (%x) %s***\n", type,
LOCAL_PrologMode, fmt);
#endif
if (type == INTERRUPT_EVENT) {
fprintf(stderr, "%% YAP exiting: cannot handle signal %d\n",
(int)IntOfTerm(where));
LOCAL_PrologMode &= ~InErrorMode;
Yap_exit(1);
}
if (LOCAL_within_print_message) {
/* error within error */
fprintf(stderr, "%% ERROR WITHIN WARNING %d: %s\n", LOCAL_Error_TYPE,
tmpbuf);
LOCAL_PrologMode &= ~InErrorMode;
Yap_exit(1);
}
va_start(ap, where);
fmt = va_arg(ap, char *);
if (fmt != NULL) {
#if HAVE_VSNPRINTF
(void)vsnprintf(s, MAXPATHLEN - 1, fmt, ap);
#else
(void)vsprintf(s, fmt, ap);
#endif
// fprintf(stderr, "warning: ");
comment = MkAtomTerm(Yap_LookupAtom(s));
} else if (LOCAL_ErrorMessage && LOCAL_ErrorMessage[0]) {
comment = MkAtomTerm(Yap_LookupAtom(LOCAL_ErrorMessage));
} else {
comment = TermNil;
}
va_end(ap);
if (P == (yamop *)(FAILCODE)) {
LOCAL_PrologMode &= ~InErrorMode;
return P;
}
/* PURE_ABORT may not have set where correctly, BootMode may not have the data
* terms ready */
if (type == ABORT_EVENT || LOCAL_PrologMode & BootMode) {
where = TermNil;
LOCAL_PrologMode &= ~AbortMode;
LOCAL_PrologMode &= ~InErrorMode;
/* make sure failure will be seen at next port */
// no need to lock & unlock
if (LOCAL_PrologMode & AsyncIntMode)
Yap_signal(YAP_FAIL_SIGNAL);
P = FAILCODE;
} else {
if (IsVarTerm(where)) {
/* we must be careful someone gave us a copy to a local variable */
Term t = MkVarTerm();
Yap_unify(t, where);
where = Deref(where);
/* disallow recursive error handling */
if (LOCAL_PrologMode & InErrorMode) {
fprintf(stderr, "%% ERROR WITHIN ERROR %d: %s\n", LOCAL_Error_TYPE, tmpbuf);
Yap_RestartYap(1);
}
/* Exit Abort Mode, if we were there */
LOCAL_PrologMode &= ~AbortMode;
if (LOCAL_DoingUndefp && type == EVALUATION_ERROR_UNDEFINED) {
P = FAILCODE;
CalculateStackGap(PASS_REGS1);
return P;
}
LOCAL_ActiveError->errorNo = type;
LOCAL_ActiveError->errorAsText = Yap_errorName(type);
LOCAL_ActiveError->errorClass = Yap_errorClass(type);
LOCAL_ActiveError->classAsText =
Yap_errorClassName(LOCAL_ActiveError->errorClass);
LOCAL_ActiveError->errorLine = lineno;
LOCAL_ActiveError->errorFunction = function;
LOCAL_ActiveError->errorFile = file;
Yap_prolog_add_culprit(LOCAL_ActiveError PASS_REGS1);
LOCAL_PrologMode |= InErrorMode;
if (!(where = Yap_CopyTerm(where))) {
where = TermNil;
}
}
if (LOCAL_PrologMode & BootMode) {
/* crash in flames! */
fprintf(stderr,
"%s:%d:0 YAP Fatal Error %d in function %s:\n %s exiting....\n",
file, lineno, type, function, s);
error_exit_yap(1);
}
#ifdef DEBUG
// DumpActiveGoals( USES_REGS1 );
#endif /* DEBUG */
if (!IsVarTerm(where) && IsApplTerm(where) &&
FunctorOfTerm(where) == FunctorError) {
error_t = where;
P = (yamop *)FAILCODE;
Yap_JumpToEnv(error_t);
LOCAL_PrologMode &= ~InErrorMode;
return P;
}
switch (type) {
case SYSTEM_ERROR_INTERNAL: {
fprintf(stderr, "%% Internal YAP Error: %s exiting....\n", tmpbuf);
// serious = true;
if (LOCAL_PrologMode & BootMode) {
fprintf(stderr, "%% YAP crashed while booting %s\n", tmpbuf);
} else {
Yap_detect_bug_location(P, FIND_PRED_FROM_ANYWHERE, YAP_BUF_SIZE);
if (tmpbuf[0]) {
fprintf(stderr, "%% Bug found while executing %s\n", tmpbuf);
}
#if HAVE_BACKTRACE
void *callstack[256];
int i;
int frames = backtrace(callstack, 256);
char **strs = backtrace_symbols(callstack, frames);
fprintf(stderr, "Execution stack:\n");
for (i = 0; i < frames; ++i) {
fprintf(stderr, " %s\n", strs[i]);
}
free(strs);
Yap_ClearExs();
// first, obtain current location
// sprintf(LOCAL_FileNameBuf, "%s:%d in C-function %s ", file, lineno,
// function);
// tf = MkAtomTerm(Yap_LookupAtom(LOCAL_FileNameBuf));
#if DEBUG_STRICT
if (Yap_heap_regs && !(LOCAL_PrologMode & BootMode))
fprintf(stderr, "***** Processing Error %d (%lx,%x) %s***\n", type,
(unsigned long int)LOCAL_Signals, LOCAL_PrologMode, fmt);
else
fprintf(stderr, "***** Processing Error %d (%x) %s***\n", type,
LOCAL_PrologMode, fmt);
#endif
if (type == INTERRUPT_EVENT) {
fprintf(stderr, "%% YAP exiting: cannot handle signal %d\n",
(int) IntOfTerm(where));
LOCAL_PrologMode &= ~InErrorMode;
Yap_exit(1);
}
error_exit_yap(1);
}
case SYSTEM_ERROR_FATAL: {
fprintf(stderr, "%% Fatal YAP Error: %s exiting....\n", tmpbuf);
error_exit_yap(1);
}
case INTERRUPT_EVENT: {
error_exit_yap(1);
}
case ABORT_EVENT:
nt[0] = MkAtomTerm(AtomDAbort);
fun = FunctorDollarVar;
// serious = true;
break;
case CALL_COUNTER_UNDERFLOW_EVENT:
/* Do a long jump */
LOCAL_ReductionsCounterOn = FALSE;
LOCAL_PredEntriesCounterOn = FALSE;
LOCAL_RetriesCounterOn = FALSE;
Yap_JumpToEnv(MkAtomTerm(AtomCallCounter));
P = FAILCODE;
LOCAL_PrologMode &= ~InErrorMode;
return (P);
case PRED_ENTRY_COUNTER_UNDERFLOW_EVENT:
/* Do a long jump */
LOCAL_ReductionsCounterOn = FALSE;
LOCAL_PredEntriesCounterOn = FALSE;
LOCAL_RetriesCounterOn = FALSE;
Yap_JumpToEnv(MkAtomTerm(AtomCallAndRetryCounter));
P = FAILCODE;
LOCAL_PrologMode &= ~InErrorMode;
return (P);
case RETRY_COUNTER_UNDERFLOW_EVENT:
/* Do a long jump */
LOCAL_ReductionsCounterOn = FALSE;
LOCAL_PredEntriesCounterOn = FALSE;
LOCAL_RetriesCounterOn = FALSE;
Yap_JumpToEnv(MkAtomTerm(AtomRetryCounter));
P = (yamop *)FAILCODE;
LOCAL_PrologMode &= ~InErrorMode;
return (P);
default: {
LOCAL_PrologMode &= ~InErrorMode;
Term ts[3];
ts[2] = where;
nt[0] = mkerrort(type, ts + 2);
}
}
LOCAL_PrologMode &= ~InErrorMode;
if (type != ABORT_EVENT) {
Term location;
/* This is used by some complex procedures to detect there was an error */
if (IsAtomTerm(nt[0])) {
LOCAL_ErrorMessage = RepAtom(AtomOfTerm(nt[0]))->StrOfAE;
if (LOCAL_within_print_message) {
/* error within error */
fprintf(stderr, "%% ERROR WITHIN WARNING %d: %s\n", LOCAL_Error_TYPE,
tmpbuf);
LOCAL_PrologMode &= ~InErrorMode;
Yap_exit(1);
}
if (where == 0L || where == TermNil) {
LOCAL_ActiveError->culprit = NULL;
} else {
LOCAL_ErrorMessage =
(char *)RepAtom(NameOfFunctor(FunctorOfTerm(nt[0])))->StrOfAE;
LOCAL_ActiveError->culprit = Yap_TermToBuffer(where, LOCAL_encoding, Quote_illegal_f | Handle_vars_f);
}
nt[1] = TermNil;
va_start(ap, where);
fmt = va_arg(ap, char *);
if (fmt != NULL) {
#if HAVE_VSNPRINTF
(void) vsnprintf(s, MAXPATHLEN - 1, fmt, ap);
#else
(void)vsprintf(s, fmt, ap);
#endif
// fprintf(stderr, "warning: ");
if (s[0]) {
LOCAL_ActiveError->errorMsgLen = strlen(s) + 1;
LOCAL_ActiveError->errorMsg = malloc(LOCAL_ActiveError->errorMsgLen);
strcpy(LOCAL_ActiveError->errorMsg, s);
} else if (LOCAL_ErrorMessage && LOCAL_ErrorMessage[0]) {
LOCAL_ActiveError->errorMsgLen = strlen(LOCAL_ErrorMessage) + 1;
LOCAL_ActiveError->errorMsg = malloc(LOCAL_ActiveError->errorMsgLen);
strcpy(LOCAL_ActiveError->errorMsg, LOCAL_ErrorMessage);
} else {
LOCAL_ActiveError->errorMsgLen = 0;
LOCAL_ActiveError->errorMsg = 0;
}
}
va_end(ap);
if (where == 0 || where == TermNil) {
LOCAL_ActiveError->culprit = 0;
}
if (P == (yamop *) (FAILCODE)) {
LOCAL_PrologMode &= ~InErrorMode;
return P;
}
/* PURE_ABORT may not have set where correctly, BootMode may not have the data
* terms ready */
if (type == ABORT_EVENT || LOCAL_PrologMode & BootMode) {
LOCAL_PrologMode &= ~AbortMode;
LOCAL_PrologMode &= ~InErrorMode;
/* make sure failure will be seen at next port */
// no need to lock & unlock
if (LOCAL_PrologMode & AsyncIntMode)
Yap_signal(YAP_FAIL_SIGNAL);
P = FAILCODE;
} else {
/* Exit Abort Mode, if we were there */
LOCAL_PrologMode &= ~AbortMode;
LOCAL_PrologMode |= InErrorMode;
}
if (LOCAL_PrologMode & BootMode) {
/* crash in flames! */
fprintf(stderr,
"%s:%d:0 YAP Fatal Error %d in function %s:\n %s exiting....\n",
file, lineno, type, function, s);
error_exit_yap(1);
}
#ifdef DEBUG
// DumpActiveGoals( USES_REGS1 );
#endif /* DEBUG */
switch (type) {
case RESOURCE_ERROR_HEAP:
case RESOURCE_ERROR_STACK:
case RESOURCE_ERROR_TRAIL:
comment = MkAtomTerm(Yap_LookupAtom(tmpbuf));
default:
if (comment != TermNil)
nt[1] = MkPairTerm(MkPairTerm(MkAtomTerm(Yap_LookupAtom("i")), comment),
nt[1]);
if (file && function) {
Term ts[3], t3;
ts[0] = MkAtomTerm(Yap_LookupAtom(file));
ts[1] = MkIntegerTerm(lineno);
ts[2] = MkAtomTerm(Yap_LookupAtom(function));
t3 = Yap_MkApplTerm(Yap_MkFunctor(Yap_LookupAtom("c"), 3), 3, ts);
nt[1] =
MkPairTerm(MkPairTerm(MkAtomTerm(Yap_LookupAtom("c")), t3), nt[1]);
}
if ((location = Yap_pc_location(P, B, ENV)) != TermNil) {
nt[1] = MkPairTerm(
MkPairTerm(MkAtomTerm(Yap_LookupAtom("p")), location), nt[1]);
}
if ((location = Yap_env_location(CP, B, ENV, 0)) != TermNil) {
nt[1] = MkPairTerm(
MkPairTerm(MkAtomTerm(Yap_LookupAtom("e")), location), nt[1]);
}
case SYSTEM_ERROR_INTERNAL: {
fprintf(stderr, "%% Internal YAP Error: %s exiting....\n", tmpbuf);
// serious = true;
if (LOCAL_PrologMode & BootMode) {
fprintf(stderr, "%% YAP crashed while booting %s\n", tmpbuf);
} else {
Yap_detect_bug_location(P, FIND_PRED_FROM_ANYWHERE, YAP_BUF_SIZE);
if (tmpbuf[0]) {
fprintf(stderr, "%% Bug found while executing %s\n", tmpbuf);
}
#if HAVE_BACKTRACE
void *callstack[256];
int i;
int frames = backtrace(callstack, 256);
char **strs = backtrace_symbols(callstack, frames);
fprintf(stderr, "Execution stack:\n");
for (i = 0; i < frames; ++i) {
fprintf(stderr, " %s\n", strs[i]);
}
free(strs);
#endif
}
error_exit_yap(1);
}
case SYSTEM_ERROR_FATAL: {
fprintf(stderr, "%% Fatal YAP Error: %s exiting....\n", tmpbuf);
error_exit_yap(1);
}
case INTERRUPT_EVENT: {
error_exit_yap(1);
}
case ABORT_EVENT:
// fun = FunctorDollarVar;
// serious = true;
LOCAL_ActiveError->errorNo = ABORT_EVENT;
Yap_JumpToEnv();
P = FAILCODE;
LOCAL_PrologMode &= ~InErrorMode;
return P;
case CALL_COUNTER_UNDERFLOW_EVENT:
/* Do a long jump */
LOCAL_ReductionsCounterOn = FALSE;
LOCAL_PredEntriesCounterOn = FALSE;
LOCAL_RetriesCounterOn = FALSE;
LOCAL_ActiveError->errorNo = CALL_COUNTER_UNDERFLOW_EVENT;
Yap_JumpToEnv();
P = FAILCODE;
LOCAL_PrologMode &= ~InErrorMode;
return P;
case PRED_ENTRY_COUNTER_UNDERFLOW_EVENT:
/* Do a long jump */
LOCAL_ReductionsCounterOn = FALSE;
LOCAL_PredEntriesCounterOn = FALSE;
LOCAL_RetriesCounterOn = FALSE;
LOCAL_ActiveError->errorNo = PRED_ENTRY_COUNTER_UNDERFLOW_EVENT;
Yap_JumpToEnv();
P = FAILCODE;
LOCAL_PrologMode &= ~InErrorMode;
return P;
case RETRY_COUNTER_UNDERFLOW_EVENT:
/* Do a long jump */
LOCAL_ReductionsCounterOn = FALSE;
LOCAL_PredEntriesCounterOn = FALSE;
LOCAL_RetriesCounterOn = FALSE;
LOCAL_ActiveError->errorNo = RETRY_COUNTER_UNDERFLOW_EVENT;
Yap_JumpToEnv();
P = FAILCODE;
LOCAL_PrologMode &= ~InErrorMode;
return P;
default:
if (!Yap_pc_add_location(LOCAL_ActiveError, CP, B, ENV))
Yap_env_add_location(LOCAL_ActiveError, CP, B, ENV, 0);
break;
}
}
/* disable active signals at this point */
LOCAL_Signals = 0;
LOCAL_Signals = 0;
CalculateStackGap(PASS_REGS1);
#if DEBUG
// DumpActiveGoals( PASS_REGS1 );
#endif
/* wait if we we are in user code,
it's up to her to decide */
fun = FunctorError;
error_t = Yap_MkApplTerm(fun, 2, nt);
if (type == ABORT_EVENT) {
error_t = MkAtomTerm(AtomDAbort);
} else {
error_t = Yap_MkApplTerm(fun, 2, nt);
}
if (LOCAL_DoingUndefp) {
Yap_PrintWarning(error_t);
Yap_PrintWarning(Yap_GetException());
return P;
}
//reset_error_description();
Yap_PutException(error_t);
fprintf(stderr,"HR before jmp=%p\n", HR);
if (throw)
LOCAL_BallTerm = Yap_StoreTermInDB(error_t, 5);
else
Yap_JumpToEnv(error_t);
fprintf(stderr,"HR after jmp=%p\n", HR);
LOCAL_PrologMode &= ~InErrorMode;
if (!throw) {
Yap_JumpToEnv();
}
return P;
}
@@ -835,8 +908,53 @@ const char *Yap_errorClassName(yap_error_class_number e) {
return c_error_class_name[e];
}
Term Yap_GetException(void) {
CACHE_REGS
if (LOCAL_ActiveError->errorNo != YAP_NO_ERROR) {
yap_error_descriptor_t *t = LOCAL_ActiveError;
Term rc = mkerrort(t->errorNo, Yap_BufferToTerm(t->culprit, TermNil), err2list(t));
Yap_DebugPlWriteln(rc);
Yap_ResetException(worker_id);
return rc;
}
return 0;
}
void Yap_PrintException(void) {
printErr(LOCAL_ActiveError);
}
bool Yap_RaiseException(void) {
if (LOCAL_ActiveError->errorNo == YAP_NO_ERROR)
return false;
return Yap_JumpToEnv();
}
bool Yap_ResetException(int wid) {
// reset error descriptor
yap_error_descriptor_t *bf = REMOTE_ActiveError(wid)->top_error;
memset(REMOTE_ActiveError(wid), 0, sizeof(*LOCAL_ActiveError));
REMOTE_ActiveError(wid)->top_error = bf;
LOCAL_PrologMode &= ~InErrorMode;
return true;
}
static Int reset_exception(USES_REGS1) { return Yap_ResetException(worker_id); }
static Int get_exception(USES_REGS1) {
Term t;
if (Yap_HasException() && (t = Yap_GetException()) != 0) {
Int rc= Yap_unify(t, ARG1);
return rc;
}
return false;
}
void Yap_InitErrorPreds(void) {
CACHE_REGS
Yap_InitCPred("$reset_exception", 1, reset_exception, 0);
Yap_InitCPred("$get_exception", 1, get_exception, 0);
Yap_InitCPred("$close_error", 0, close_error, HiddenPredFlag);
Yap_InitCPred("is_boolean", 2, is_boolean, TestPredFlag);
Yap_InitCPred("is_callable", 2, is_callable, TestPredFlag);