static SV *
DeadCode(pTHX)
{
#ifdef PURIFY
return Nullsv;
#else
SV* sva;
SV* sv;
SV* ret = newRV_noinc((SV*)newAV());
register SV* svend;
int tm = 0, tref = 0, ts = 0, ta = 0, tas = 0;
for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
svend = &sva[SvREFCNT(sva)];
for (sv = sva + 1; sv < svend; ++sv) {
if (SvTYPE(sv) == SVt_PVCV) {
CV *cv = (CV*)sv;
AV* padlist = CvPADLIST(cv), *argav;
SV** svp;
SV** pad;
int i = 0, j, levelm, totm = 0, levelref, totref = 0;
int levels, tots = 0, levela, tota = 0, levelas, totas = 0;
int dumpit = 0;
if (CvISXSUB(sv)) {
continue; /* XSUB */
}
if (!CvGV(sv)) {
continue; /* file-level scope. */
}
if (!CvROOT(cv)) {
/* PerlIO_printf(Perl_debug_log, " no root?!\n"); */
continue; /* autoloading stub. */
}
do_gvgv_dump(0, Perl_debug_log, "GVGV::GV", CvGV(sv));
if (CvDEPTH(cv)) {
PerlIO_printf(Perl_debug_log, " busy\n");
continue;
}
svp = AvARRAY(padlist);
while (++i <= AvFILL(padlist)) { /* Depth. */
SV **args;
pad = AvARRAY((AV*)svp[i]);
argav = (AV*)pad[0];
if (!argav || (SV*)argav == &PL_sv_undef) {
PerlIO_printf(Perl_debug_log, " closure-template\n");
continue;
}
args = AvARRAY(argav);
levelm = levels = levelref = levelas = 0;
levela = sizeof(SV*) * (AvMAX(argav) + 1);
if (AvREAL(argav)) {
for (j = 0; j < AvFILL(argav); j++) {
if (SvROK(args[j])) {
PerlIO_printf(Perl_debug_log, " ref in args!\n");
levelref++;
}
/* else if (SvPOK(args[j]) && SvPVX(args[j])) { */
else if (SvTYPE(args[j]) >= SVt_PV && SvLEN(args[j])) {
levelas += SvLEN(args[j])/SvREFCNT(args[j]);
}
}
}
for (j = 1; j < AvFILL((AV*)svp[1]); j++) { /* Vars. */
if (SvROK(pad[j])) {
levelref++;
do_sv_dump(0, Perl_debug_log, pad[j], 0, 4, 0, 0);
dumpit = 1;
}
/* else if (SvPOK(pad[j]) && SvPVX(pad[j])) { */
else if (SvTYPE(pad[j]) >= SVt_PVAV) {
if (!SvPADMY(pad[j])) {
levelref++;
do_sv_dump(0, Perl_debug_log, pad[j], 0, 4, 0, 0);
dumpit = 1;
}
}
else if (SvTYPE(pad[j]) >= SVt_PV && SvLEN(pad[j])) {
levels++;
levelm += SvLEN(pad[j])/SvREFCNT(pad[j]);
/* Dump(pad[j],4); */
}
}
PerlIO_printf(Perl_debug_log, " level %i: refs: %i, strings: %i in %i,\targsarray: %i, argsstrings: %i\n",
i, levelref, levelm, levels, levela, levelas);
totm += levelm;
tota += levela;
totas += levelas;
tots += levels;
totref += levelref;
if (dumpit)
do_sv_dump(0, Perl_debug_log, (SV*)cv, 0, 2, 0, 0);
}
if (AvFILL(padlist) > 1) {
PerlIO_printf(Perl_debug_log, " total: refs: %i, strings: %i in %i,\targsarrays: %i, argsstrings: %i\n",
totref, totm, tots, tota, totas);
}
tref += totref;
tm += totm;
ts += tots;
ta += tota;
tas += totas;
}
}
}
PerlIO_printf(Perl_debug_log, "total: refs: %i, strings: %i in %i\targsarray: %i, argsstrings: %i\n", tref, tm, ts, ta, tas);
return ret;
#endif /* !PURIFY */
}
/* helper for the default modify handler for builtin attributes */
static int
modify_SV_attributes(pTHX_ SV *sv, SV **retlist, SV **attrlist, int numattrs)
{
SV *attr;
int nret;
for (nret = 0 ; numattrs && (attr = *attrlist++); numattrs--) {
STRLEN len;
const char *name = SvPV_const(attr, len);
const bool negated = (*name == '-');
HV *typestash;
if (negated) {
name++;
len--;
}
switch (SvTYPE(sv)) {
case SVt_PVCV:
switch ((int)len) {
case 4:
if (memEQ(name, "pure", 4)) {
if (negated)
Perl_croak(aTHX_ "Illegal :-pure attribute");
CvPURE_on(sv);
goto next_attr;
}
break;
case 5:
if (memEQ(name, "const", 5)) {
if (negated)
CvCONST_off(sv);
else {
#ifndef USE_CPERL
const bool warn = (!CvANON(sv) || CvCLONED(sv))
&& !CvCONST(sv);
CvCONST_on(sv);
if (warn)
break;
#else
CvCONST_on(sv);
#endif
}
goto next_attr;
}
break;
case 6:
switch (name[3]) {
case 'l':
if (memEQ(name, "lvalue", 6)) {
bool warn =
!CvISXSUB(MUTABLE_CV(sv))
&& CvROOT(MUTABLE_CV(sv))
&& !CvLVALUE(MUTABLE_CV(sv)) != negated;
if (negated)
CvFLAGS(MUTABLE_CV(sv)) &= ~CVf_LVALUE;
else
CvFLAGS(MUTABLE_CV(sv)) |= CVf_LVALUE;
if (warn) break;
goto next_attr;
}
break;
case 'h':
if (memEQ(name, "method", 6)) {
if (negated)
CvFLAGS(MUTABLE_CV(sv)) &= ~CVf_METHOD;
else
CvFLAGS(MUTABLE_CV(sv)) |= CVf_METHOD;
goto next_attr;
}
break;
}
break;
default:
if (len > 10 && memEQ(name, "prototype(", 10)) {
SV * proto = newSVpvn(name+10,len-11);
HEK *const hek = CvNAME_HEK((CV *)sv);
SV *subname;
if (name[len-1] != ')')
Perl_croak(aTHX_ "Unterminated attribute parameter in attribute list");
if (hek)
subname = sv_2mortal(newSVhek(hek));
else
subname=(SV *)CvGV((const CV *)sv);
if (ckWARN(WARN_ILLEGALPROTO))
Perl_validate_proto(aTHX_ subname, proto, TRUE);
Perl_cv_ckproto_len_flags(aTHX_ (const CV *)sv,
(const GV *)subname,
name+10,
len-11,
SvUTF8(attr));
sv_setpvn(MUTABLE_SV(sv), name+10, len-11);
if (SvUTF8(attr)) SvUTF8_on(MUTABLE_SV(sv));
goto next_attr;
}
break;
}
if (!negated && (typestash = gv_stashpvn(name, len, SvUTF8(attr)))) {
CvTYPED_on(sv);
CvTYPE_set((CV*)sv, typestash);
continue;
}
break;
case SVt_IV:
case SVt_PVIV:
case SVt_PVMG:
if (memEQ(name, "unsigned", 8)
&& (SvIOK(sv) || SvUOK(sv)))
{
if (negated) /* :-unsigned alias for :signed */
SvIsUV_off(sv);
else
SvIsUV_on(sv);
continue;
}
/* fallthru - all other data types */
default:
if (memEQ(name, "const", 5)
&& !(SvFLAGS(sv) & SVf_PROTECT))
{
if (negated)
SvREADONLY_off(sv);
else
SvREADONLY_on(sv);
continue;
}
if (memEQs(name, len, "shared")) {
if (negated)
Perl_croak(aTHX_ "A variable may not be unshared");
SvSHARE(sv);
continue;
}
break;
}
/* anything recognized had a 'continue' above */
*retlist++ = attr;
nret++;
next_attr:
;
}
return nret;
}
