/* pp_hot.c
*
- * Copyright (c) 1991-1994, Larry Wall
+ * Copyright (c) 1991-1997, Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
/* Hot code. */
+#ifdef USE_THREADS
+static void
+unset_cvowner(cvarg)
+void *cvarg;
+{
+ register CV* cv = (CV *) cvarg;
+#ifdef DEBUGGING
+ dTHR;
+#endif /* DEBUGGING */
+
+ DEBUG_L((PerlIO_printf(PerlIO_stderr(), "0x%lx unsetting CvOWNER of 0x%lx:%s\n",
+ (unsigned long)thr, (unsigned long)cv, SvPEEK((SV*)cv))));
+ MUTEX_LOCK(CvMUTEXP(cv));
+ DEBUG_L(if (CvDEPTH(cv) != 0)
+ PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n",
+ CvDEPTH(cv)););
+ assert(thr == CvOWNER(cv));
+ CvOWNER(cv) = 0;
+ MUTEX_UNLOCK(CvMUTEXP(cv));
+ SvREFCNT_dec(cv);
+}
+#endif /* USE_THREADS */
+
PP(pp_const)
{
dSP;
}
if (tainting && tainted && !SvTAINTED(left))
TAINT_NOT;
- SvSetSV(right, left);
- SvSETMAGIC(right);
+ SvSetMagicSV(right, left);
SETs(right);
RETURN;
}
s = SvPV_force(TARG, len);
}
s = SvPV(right,len);
- sv_catpvn(TARG,s,len);
+ if (SvOK(TARG))
+ sv_catpvn(TARG,s,len);
+ else
+ sv_setpvn(TARG,s,len); /* suppress warning */
SETTARG;
RETURN;
}
if (op->op_private & OPpLVAL_INTRO)
SAVECLEARSV(curpad[op->op_targ]);
else if (op->op_private & OPpDEREF)
- provide_ref(op, curpad[op->op_targ]);
+ vivify_ref(curpad[op->op_targ], op->op_private & OPpDEREF);
}
RETURN;
}
dSP; tryAMAGICbinSET(eq,0);
{
dPOPnv;
- SETs((TOPn == value) ? &sv_yes : &sv_no);
+ SETs(boolSV(TOPn == value));
RETURN;
}
}
PP(pp_preinc)
{
dSP;
- if (SvREADONLY(TOPs))
+ if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
croak(no_modify);
if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
SvIVX(TOPs) != IV_MAX)
else
gv = defoutgv;
if (SvMAGICAL(gv) && (mg = mg_find((SV*)gv, 'q'))) {
- SV *sv;
-
- PUSHMARK(MARK-1);
+ if (MARK == ORIGMARK) {
+ EXTEND(SP, 1);
+ ++MARK;
+ Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
+ ++SP;
+ }
+ PUSHMARK(MARK - 1);
*MARK = mg->mg_obj;
+ PUTBACK;
ENTER;
perl_call_method("PRINT", G_SCALAR);
LEAVE;
SPAGAIN;
- sv = POPs;
- SP = ORIGMARK;
- PUSHs(sv);
+ MARK = ORIGMARK + 1;
+ *MARK = *SP;
+ SP = MARK;
RETURN;
}
if (!(io = GvIO(gv))) {
PP(pp_rv2av)
{
dSP; dPOPss;
-
AV *av;
if (SvROK(sv)) {
av = (AV*)SvRV(sv);
if (SvTYPE(av) != SVt_PVAV)
DIE("Not an ARRAY reference");
- if (op->op_private & OPpLVAL_INTRO)
- av = (AV*)save_svref((SV**)sv);
if (op->op_flags & OPf_REF) {
PUSHs((SV*)av);
RETURN;
if (op->op_flags & OPf_REF ||
op->op_private & HINT_STRICT_REFS)
DIE(no_usym, "an ARRAY");
+ if (dowarn)
+ warn(warn_uninit);
if (GIMME == G_ARRAY)
RETURN;
RETPUSHUNDEF;
PP(pp_rv2hv)
{
-
dSP; dTOPss;
-
HV *hv;
if (SvROK(sv)) {
wasref:
hv = (HV*)SvRV(sv);
- if (SvTYPE(hv) != SVt_PVHV)
+ if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV)
DIE("Not a HASH reference");
- if (op->op_private & OPpLVAL_INTRO)
- hv = (HV*)save_svref((SV**)sv);
if (op->op_flags & OPf_REF) {
SETs((SV*)hv);
RETURN;
}
}
else {
- if (SvTYPE(sv) == SVt_PVHV) {
+ if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) {
hv = (HV*)sv;
if (op->op_flags & OPf_REF) {
SETs((SV*)hv);
if (op->op_flags & OPf_REF ||
op->op_private & HINT_STRICT_REFS)
DIE(no_usym, "a HASH");
+ if (dowarn)
+ warn(warn_uninit);
if (GIMME == G_ARRAY) {
SP--;
RETURN;
}
else {
dTARGET;
- if (HvFILL(hv)) {
- sprintf(buf, "%d/%d", HvFILL(hv), HvMAX(hv)+1);
- sv_setpv(TARG, buf);
- }
+ /* This bit is OK even when hv is really an AV */
+ if (HvFILL(hv))
+ sv_setpvf(TARG, "%ld/%ld",
+ (long)HvFILL(hv), (long)HvMAX(hv) + 1);
else
sv_setiv(TARG, 0);
+
SETTARG;
RETURN;
}
register SV *sv;
register AV *ary;
+ I32 gimme;
HV *hash;
I32 i;
int magic;
if (op->op_private & OPpASSIGN_COMMON) {
for (relem = firstrelem; relem <= lastrelem; relem++) {
/*SUPPRESS 560*/
- if (sv = *relem)
+ if (sv = *relem) {
+ TAINT_NOT; /* Each item is independent */
*relem = sv_mortalcopy(sv);
+ }
}
}
av_extend(ary, lastrelem - relem);
i = 0;
while (relem <= lastrelem) { /* gobble up all the rest */
+ SV **didstore;
sv = NEWSV(28,0);
assert(*relem);
sv_setsv(sv,*relem);
*(relem++) = sv;
- (void)av_store(ary,i++,sv);
- if (magic)
+ didstore = av_store(ary,i++,sv);
+ if (magic) {
mg_set(sv);
+ if (!didstore)
+ SvREFCNT_dec(sv);
+ }
TAINT_NOT;
}
break;
while (relem < lastrelem) { /* gobble up all the rest */
STRLEN len;
+ HE *didstore;
if (*relem)
sv = *(relem++);
else
if (*relem)
sv_setsv(tmpstr,*relem); /* value */
*(relem++) = tmpstr;
- (void)hv_store_ent(hash,sv,tmpstr,0);
- if (magic)
+ didstore = hv_store_ent(hash,sv,tmpstr,0);
+ if (magic) {
mg_set(tmpstr);
+ if (!didstore)
+ SvREFCNT_dec(tmpstr);
+ }
TAINT_NOT;
}
if (relem == lastrelem)
tainting |= (uid && (euid != uid || egid != gid));
}
delaymagic = 0;
- if (GIMME == G_ARRAY) {
+
+ gimme = GIMME_V;
+ if (gimme == G_VOID)
+ SP = firstrelem - 1;
+ else if (gimme == G_SCALAR) {
+ dTARGET;
+ SP = firstrelem;
+ SETi(lastrelem - firstrelem + 1);
+ }
+ else {
if (ary || hash)
SP = lastrelem;
else
lelem = firstlelem + (relem - firstrelem);
while (relem <= SP)
*relem++ = (lelem <= lastlelem) ? *lelem++ : &sv_undef;
- RETURN;
- }
- else {
- dTARGET;
- SP = firstrelem;
-
- SETi(lastrelem - firstrelem + 1);
- RETURN;
}
+ RETURN;
}
PP(pp_match)
}
if (!rx->nparens && !global)
gimme = G_SCALAR; /* accidental array context? */
- safebase = (((gimme == G_ARRAY) || global) && !sawampersand);
+ safebase = (((gimme == G_ARRAY) || global || !rx->nparens)
+ && !sawampersand);
if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
SAVEINT(multiline);
multiline = pm->op_pmflags & PMf_MULTILINE;
play_it_again:
if (global && rx->startp[0]) {
t = s = rx->endp[0];
- if (s >= strend)
+ if ((s + rx->minlen) > strend)
goto nope;
if (update_minmatch++)
minmatch = (s == rx->startp[0]);
++BmUSEFUL(pm->op_pmshort);
ret_no:
+ if (global && !(pm->op_pmflags & PMf_CONTINUE)) {
+ if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
+ MAGIC* mg = mg_find(TARG, 'g');
+ if (mg)
+ mg->mg_len = -1;
+ }
+ }
LEAVE_SCOPE(oldsave);
if (gimme == G_ARRAY)
RETURN;
OP *
do_readline()
{
+ dTHR;
dSP; dTARGETSTACKED;
register SV *sv;
STRLEN tmplen = 0;
PerlIO *fp;
register IO *io = GvIO(last_in_gv);
register I32 type = op->op_type;
+ I32 gimme = GIMME_V;
MAGIC *mg;
if (SvMAGICAL(last_in_gv) && (mg = mg_find((SV*)last_in_gv, 'q'))) {
XPUSHs(mg->mg_obj);
PUTBACK;
ENTER;
- perl_call_method("READLINE", GIMME);
+ perl_call_method("READLINE", gimme);
LEAVE;
SPAGAIN;
- if (GIMME == G_SCALAR)
- SvSetSV_nosteal(TARG, TOPs);
+ if (gimme == G_SCALAR)
+ SvSetMagicSV_nosteal(TARG, TOPs);
RETURN;
}
fp = Nullfp;
if (!fp) {
if (dowarn && io && !(IoFLAGS(io) & IOf_START))
warn("Read on closed filehandle <%s>", GvENAME(last_in_gv));
- if (GIMME == G_SCALAR) {
+ if (gimme == G_SCALAR) {
(void)SvOK_off(TARG);
PUSHTARG;
}
RETURN;
}
- if (GIMME == G_ARRAY) {
- sv = sv_2mortal(NEWSV(57, 80));
- offset = 0;
- }
- else {
+ if (gimme == G_SCALAR) {
sv = TARG;
+ if (SvROK(sv))
+ sv_unref(sv);
(void)SvUPGRADE(sv, SVt_PV);
tmplen = SvLEN(sv); /* remember if already alloced */
if (!tmplen)
else
offset = 0;
}
+ else {
+ sv = sv_2mortal(NEWSV(57, 80));
+ offset = 0;
+ }
for (;;) {
if (!sv_gets(sv, fp, offset)) {
PerlIO_clearerr(fp);
IoFLAGS(io) |= IOf_START;
}
else if (type == OP_GLOB) {
- (void)do_close(last_in_gv, FALSE);
+ if (do_close(last_in_gv, FALSE) & ~0xFF)
+ warn("internal error: glob failed");
}
- if (GIMME == G_SCALAR) {
+ if (gimme == G_SCALAR) {
(void)SvOK_off(TARG);
PUSHTARG;
}
continue;
}
}
- if (GIMME == G_ARRAY) {
+ if (gimme == G_ARRAY) {
if (SvLEN(sv) - SvCUR(sv) > 20) {
SvLEN_set(sv, SvCUR(sv)+1);
Renew(SvPVX(sv), SvLEN(sv), char);
sv = sv_2mortal(NEWSV(58, 80));
continue;
}
- else if (!tmplen && SvLEN(sv) - SvCUR(sv) > 80) {
+ else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) {
/* try to reclaim a bit of scalar space (only on 1st alloc) */
if (SvCUR(sv) < 60)
SvLEN_set(sv, 80);
{
dSP;
register CONTEXT *cx;
- I32 gimme;
+ I32 gimme = OP_GIMME(op, -1);
- /*
- * We don't just use the GIMME macro here because it assumes there's
- * already a context, which ain't necessarily so at initial startup.
- */
-
- if (op->op_flags & OPf_KNOW)
- gimme = op->op_flags & OPf_LIST;
- else if (cxstack_ix >= 0)
- gimme = cxstack[cxstack_ix].blk_gimme;
- else
- gimme = G_SCALAR;
+ if (gimme == -1) {
+ if (cxstack_ix >= 0)
+ gimme = cxstack[cxstack_ix].blk_gimme;
+ else
+ gimme = G_SCALAR;
+ }
ENTER;
{
dSP;
HE* he;
+ SV **svp;
SV *keysv = POPs;
HV *hv = (HV*)POPs;
- I32 lval = op->op_flags & OPf_MOD;
+ U32 lval = op->op_flags & OPf_MOD;
+ U32 defer = op->op_private & OPpLVAL_DEFER;
- if (SvTYPE(hv) != SVt_PVHV)
+ if (SvTYPE(hv) == SVt_PVHV) {
+ he = hv_fetch_ent(hv, keysv, lval && !defer, 0);
+ svp = he ? &HeVAL(he) : 0;
+ }
+ else if (SvTYPE(hv) == SVt_PVAV) {
+ svp = avhv_fetch_ent((AV*)hv, keysv, lval && !defer, 0);
+ }
+ else {
RETPUSHUNDEF;
- he = hv_fetch_ent(hv, keysv, lval, 0);
+ }
if (lval) {
- if (!he || HeVAL(he) == &sv_undef)
- DIE(no_helem, SvPV(keysv, na));
+ if (!svp || *svp == &sv_undef) {
+ SV* lv;
+ SV* key2;
+ if (!defer)
+ DIE(no_helem, SvPV(keysv, na));
+ lv = sv_newmortal();
+ sv_upgrade(lv, SVt_PVLV);
+ LvTYPE(lv) = 'y';
+ sv_magic(lv, key2 = newSVsv(keysv), 'y', Nullch, 0);
+ SvREFCNT_dec(key2); /* sv_magic() increments refcount */
+ LvTARG(lv) = SvREFCNT_inc(hv);
+ LvTARGLEN(lv) = 1;
+ PUSHs(lv);
+ RETURN;
+ }
if (op->op_private & OPpLVAL_INTRO) {
- if (HvNAME(hv) && isGV(HeVAL(he)))
- save_gp((GV*)HeVAL(he), !(op->op_flags & OPf_SPECIAL));
+ if (HvNAME(hv) && isGV(*svp))
+ save_gp((GV*)*svp, !(op->op_flags & OPf_SPECIAL));
else
- save_svref(&HeVAL(he));
+ save_svref(svp);
}
else if (op->op_private & OPpDEREF)
- provide_ref(op, HeVAL(he));
+ vivify_ref(*svp, op->op_private & OPpDEREF);
}
- PUSHs(he ? HeVAL(he) : &sv_undef);
+ PUSHs(svp ? *svp : &sv_undef);
RETURN;
}
POPBLOCK(cx,newpm);
- if (op->op_flags & OPf_KNOW)
- gimme = op->op_flags & OPf_LIST;
- else if (cxstack_ix >= 0)
- gimme = cxstack[cxstack_ix].blk_gimme;
- else
- gimme = G_SCALAR;
+ gimme = OP_GIMME(op, -1);
+ if (gimme == -1) {
+ if (cxstack_ix >= 0)
+ gimme = cxstack[cxstack_ix].blk_gimme;
+ else
+ gimme = G_SCALAR;
+ }
- if (gimme == G_SCALAR) {
- if (op->op_private & OPpLEAVE_VOID)
- SP = newsp;
+ TAINT_NOT;
+ if (gimme == G_VOID)
+ SP = newsp;
+ else if (gimme == G_SCALAR) {
+ MARK = newsp + 1;
+ if (MARK <= SP)
+ if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
+ *MARK = TOPs;
+ else
+ *MARK = sv_mortalcopy(TOPs);
else {
- MARK = newsp + 1;
- if (MARK <= SP)
- if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
- *MARK = TOPs;
- else
- *MARK = sv_mortalcopy(TOPs);
- else {
- MEXTEND(mark,0);
- *MARK = &sv_undef;
- }
- SP = MARK;
+ MEXTEND(mark,0);
+ *MARK = &sv_undef;
}
+ SP = MARK;
}
- else {
- for (mark = newsp + 1; mark <= SP; mark++)
- if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP)))
+ else if (gimme == G_ARRAY) {
+ /* in case LEAVE wipes old return values */
+ for (mark = newsp + 1; mark <= SP; mark++) {
+ if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
*mark = sv_mortalcopy(*mark);
- /* in case LEAVE wipes old return values */
+ TAINT_NOT; /* Each item is independent */
+ }
+ }
}
curpm = newpm; /* Don't pop $1 et al till now */
if (lv)
SvREFCNT_dec(LvTARG(lv));
else {
- lv = cx->blk_loop.iterlval = newSVsv(sv);
+ lv = cx->blk_loop.iterlval = NEWSV(26, 0);
sv_upgrade(lv, SVt_PVLV);
- sv_magic(lv, Nullsv, 'y', Nullch, 0);
LvTYPE(lv) = 'y';
+ sv_magic(lv, Nullsv, 'y', Nullch, 0);
}
LvTARG(lv) = SvREFCNT_inc(av);
LvTARGOFF(lv) = cx->blk_loop.iterix;
- LvTARGLEN(lv) = 1;
+ LvTARGLEN(lv) = -1;
sv = (SV*)lv;
}
int force_on_match = 0;
I32 oldsave = savestack_ix;
- if (pm->op_pmflags & PMf_CONST) /* known replacement string? */
- dstr = POPs;
+ /* known replacement string? */
+ dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv;
if (op->op_flags & OPf_STACKED)
TARG = POPs;
else {
TARG = GvSV(defgv);
EXTEND(SP,1);
}
+ if (SvREADONLY(TARG)
+ || (SvTYPE(TARG) > SVt_PVLV
+ && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))
+ croak(no_modify);
s = SvPV(TARG, len);
- if (!SvPOKp(TARG) || SvREADONLY(TARG) || (SvTYPE(TARG) == SVt_PVGV))
+ if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV)
force_on_match = 1;
TAINT_NOT;
once = !(rpm->op_pmflags & PMf_GLOBAL);
/* known replacement string? */
- c = (rpm->op_pmflags & PMf_CONST) ? SvPV(dstr, clen) : Nullch;
+ c = dstr ? SvPV(dstr, clen) : Nullch;
/* can do inplace substitution? */
- if (c && clen <= rx->minlen) {
+ if (c && clen <= rx->minlen && safebase) {
if (! pregexec(rx, s, strend, orig, 0,
SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
PUSHs(&sv_no);
s = SvPV_force(TARG, len);
goto force_it;
}
- if (rx->subbase) /* oops, no we can't */
- goto long_way;
d = s;
curpm = pm;
SvSCREAM_off(TARG); /* disable possible screamer */
if (pregexec(rx, s, strend, orig, 0,
SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
- long_way:
if (force_on_match) {
force_on_match = 0;
s = SvPV_force(TARG, len);
LEAVE_SCOPE(oldsave);
RETURN;
}
-
- PUSHs(&sv_no);
- LEAVE_SCOPE(oldsave);
- RETURN;
+ goto ret_no;
nope:
++BmUSEFUL(pm->op_pmshort);
+
+ret_no:
PUSHs(&sv_no);
LEAVE_SCOPE(oldsave);
RETURN;
/* All done yet? */
if (stack_base + *markstack_ptr > sp) {
I32 items;
+ I32 gimme = GIMME_V;
LEAVE; /* exit outer scope */
(void)POPMARK; /* pop src */
items = --*markstack_ptr - markstack_ptr[-1];
(void)POPMARK; /* pop dst */
SP = stack_base + POPMARK; /* pop original mark */
- if (GIMME != G_ARRAY) {
+ if (gimme == G_SCALAR) {
dTARGET;
XPUSHi(items);
- RETURN;
}
- SP += items;
+ else if (gimme == G_ARRAY)
+ SP += items;
RETURN;
}
else {
POPBLOCK(cx,newpm);
POPSUB1(cx); /* Delay POPSUB2 until stack values are safe */
+ TAINT_NOT;
if (gimme == G_SCALAR) {
MARK = newsp + 1;
if (MARK <= SP)
}
SP = MARK;
}
- else {
+ else if (gimme == G_ARRAY) {
for (MARK = newsp + 1; MARK <= SP; MARK++) {
- if (!SvTEMP(*MARK))
+ if (!SvTEMP(*MARK)) {
*MARK = sv_mortalcopy(*MARK);
+ TAINT_NOT; /* Each item is independent */
+ }
}
}
PUTBACK;
goto retry;
}
/* should call AUTOLOAD now? */
- if ((autogv = gv_autoload(GvESTASH(gv), GvNAME(gv), GvNAMELEN(gv)))) {
+ if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv),
+ FALSE)))
+ {
cv = GvCV(autogv);
goto retry;
}
DIE("Undefined subroutine &%s called", SvPVX(subname));
}
- gimme = GIMME;
+ gimme = GIMME_V;
if ((op->op_private & OPpENTERSUB_DB) && GvCV(DBsub) && !CvNODEBUG(cv)) {
SV *oldsv = sv;
sv = GvSV(DBsub);
DIE("No DBsub routine");
}
+#ifdef USE_THREADS
+ MUTEX_LOCK(CvMUTEXP(cv));
+ if (CvFLAGS(cv) & CVf_LOCKED) {
+ MAGIC *mg;
+ if (CvFLAGS(cv) & CVf_METHOD) {
+ if (SP > stack_base + TOPMARK)
+ sv = *(stack_base + TOPMARK + 1);
+ else {
+ MUTEX_UNLOCK(CvMUTEXP(cv));
+ croak("no argument for locked method call");
+ }
+ if (SvROK(sv))
+ sv = SvRV(sv);
+ }
+ else {
+ sv = (SV*)cv;
+ }
+ MUTEX_UNLOCK(CvMUTEXP(cv));
+ mg = condpair_magic(sv);
+ MUTEX_LOCK(MgMUTEXP(mg));
+ if (MgOWNER(mg) == thr)
+ MUTEX_UNLOCK(MgMUTEXP(mg));
+ else {
+ while (MgOWNER(mg))
+ COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
+ MgOWNER(mg) = thr;
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "0x%lx: pp_entersub lock 0x%lx\n",
+ (unsigned long)thr, (unsigned long)sv);)
+ MUTEX_UNLOCK(MgMUTEXP(mg));
+ save_destructor(unlock_condpair, sv);
+ }
+ MUTEX_LOCK(CvMUTEXP(cv));
+ assert(CvOWNER(cv) == 0);
+ CvOWNER(cv) = thr; /* Assert ownership */
+ SvREFCNT_inc(cv);
+ MUTEX_UNLOCK(CvMUTEXP(cv));
+ if (CvDEPTH(cv) == 0)
+ SAVEDESTRUCTOR(unset_cvowner, (void*) cv);
+ }
+ else {
+ /*
+ * It's an ordinary unsynchronised CV so we must distinguish
+ * three cases. (1) It's ours already (and we're recursing);
+ * (2) it's free (but we may already be using a cached clone);
+ * (3) another thread owns it. Case (1) is easy: we just use it.
+ * Case (2) means we look for a clone--if we have one, use it
+ * otherwise grab ownership of cv. Case (3) means look we for a
+ * clone and have to create one if we don't already have one.
+ * Why look for a clone in case (2) when we could just grab
+ * ownership of cv straight away? Well, we could be recursing,
+ * i.e. we originally tried to enter cv while another thread
+ * owned it (hence we used a clone) but it has been freed up
+ * and we're now recursing into it. It may or may not be "better"
+ * to use the clone but at least CvDEPTH can be trusted.
+ */
+ if (CvOWNER(cv) == thr)
+ MUTEX_UNLOCK(CvMUTEXP(cv));
+ else {
+ /* Case (2) or (3) */
+ SV **svp;
+
+ /*
+ * XXX Might it be better to release CvMUTEXP(cv) while we
+ * do the hv_fetch? We might find someone has pinched it
+ * when we look again, in which case we would be in case
+ * (3) instead of (2) so we'd have to clone. Would the fact
+ * that we released the mutex more quickly make up for this?
+ */
+ svp = hv_fetch(cvcache, (char *)cv, sizeof(cv), FALSE);
+ if (svp) {
+ /* We already have a clone to use */
+ MUTEX_UNLOCK(CvMUTEXP(cv));
+ cv = *(CV**)svp;
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "entersub: 0x%lx already has clone 0x%lx:%s\n",
+ (unsigned long) thr, (unsigned long) cv,
+ SvPEEK((SV*)cv)));
+ CvOWNER(cv) = thr;
+ SvREFCNT_inc(cv);
+ if (CvDEPTH(cv) == 0)
+ SAVEDESTRUCTOR(unset_cvowner, (void*) cv);
+ }
+ else {
+ /* (2) => grab ownership of cv. (3) => make clone */
+ if (!CvOWNER(cv)) {
+ CvOWNER(cv) = thr;
+ SvREFCNT_inc(cv);
+ MUTEX_UNLOCK(CvMUTEXP(cv));
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "entersub: 0x%lx grabbing 0x%lx:%s in stash %s\n",
+ (unsigned long) thr, (unsigned long) cv,
+ SvPEEK((SV*)cv), CvSTASH(cv) ?
+ HvNAME(CvSTASH(cv)) : "(none)"));
+ } else {
+ /* Make a new clone. */
+ CV *clonecv;
+ SvREFCNT_inc(cv); /* don't let it vanish from under us */
+ MUTEX_UNLOCK(CvMUTEXP(cv));
+ DEBUG_L((PerlIO_printf(PerlIO_stderr(),
+ "entersub: 0x%lx cloning 0x%lx:%s\n",
+ (unsigned long) thr, (unsigned long) cv,
+ SvPEEK((SV*)cv))));
+ /*
+ * We're creating a new clone so there's no race
+ * between the original MUTEX_UNLOCK and the
+ * SvREFCNT_inc since no one will be trying to undef
+ * it out from underneath us. At least, I don't think
+ * there's a race...
+ */
+ clonecv = cv_clone(cv);
+ SvREFCNT_dec(cv); /* finished with this */
+ hv_store(cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0);
+ CvOWNER(clonecv) = thr;
+ cv = clonecv;
+ SvREFCNT_inc(cv);
+ }
+ DEBUG_L(if (CvDEPTH(cv) != 0)
+ PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n",
+ CvDEPTH(cv)););
+ SAVEDESTRUCTOR(unset_cvowner, (void*) cv);
+ }
+ }
+ }
+#endif /* USE_THREADS */
+
+ gimme = GIMME;
+
if (CvXSUB(cv)) {
if (CvOLDSTYLE(cv)) {
I32 (*fp3)_((int,int,int));
/* Need to copy @_ to stack. Alternative may be to
* switch stack to @_, and copy return values
* back. This would allow popping @_ in XSUB, e.g.. XXXX */
- AV* av = GvAV(defgv);
- I32 items = AvFILL(av) + 1;
+ AV* av;
+ I32 items;
+#ifdef USE_THREADS
+ av = (AV*)curpad[0];
+#else
+ av = GvAV(defgv);
+#endif /* USE_THREADS */
+ items = AvFILL(av) + 1;
if (items) {
/* Mark is at the end of the stack. */
(void)SvREFCNT_inc(cv);
else { /* save temporaries on recursion? */
if (CvDEPTH(cv) == 100 && dowarn
- && !(perldb && cv == GvCV(DBsub)))
+ && !(PERLDB_SUB && cv == GvCV(DBsub)))
sub_crush_depth(cv);
if (CvDEPTH(cv) > AvFILL(padlist)) {
AV *av;
svp = AvARRAY(padlist);
}
}
- SAVESPTR(curpad);
- curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
- if (hasargs) {
+#ifdef USE_THREADS
+ if (!hasargs) {
AV* av = (AV*)curpad[0];
+
+ items = AvFILL(av) + 1;
+ if (items) {
+ /* Mark is at the end of the stack. */
+ EXTEND(sp, items);
+ Copy(AvARRAY(av), sp + 1, items, SV*);
+ sp += items;
+ PUTBACK ;
+ }
+ }
+#endif /* USE_THREADS */
+ SAVESPTR(curpad);
+ curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
+#ifndef USE_THREADS
+ if (hasargs)
+#endif /* USE_THREADS */
+ {
+ AV* av;
SV** ary;
+#if 0
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "%p entersub preparing @_\n", thr));
+#endif
+ av = (AV*)curpad[0];
if (AvREAL(av)) {
av_clear(av);
AvREAL_off(av);
}
+#ifndef USE_THREADS
cx->blk_sub.savearray = GvAV(defgv);
- cx->blk_sub.argarray = av;
GvAV(defgv) = (AV*)SvREFCNT_inc(av);
+#endif /* USE_THREADS */
+ cx->blk_sub.argarray = av;
++MARK;
if (items > AvMAX(av) + 1) {
MARK++;
}
}
+#if 0
+ DEBUG_L(PerlIO_printf(PerlIO_stderr(),
+ "%p entersub returning %p\n", thr, CvSTART(cv)));
+#endif
RETURNOP(CvSTART(cv));
}
}
dSP;
SV** svp;
I32 elem = POPi;
- AV *av = (AV*)POPs;
- I32 lval = op->op_flags & OPf_MOD;
+ AV* av = (AV*)POPs;
+ U32 lval = op->op_flags & OPf_MOD;
+ U32 defer = (op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av));
if (elem > 0)
elem -= curcop->cop_arybase;
if (SvTYPE(av) != SVt_PVAV)
RETPUSHUNDEF;
- svp = av_fetch(av, elem, lval);
+ svp = av_fetch(av, elem, lval && !defer);
if (lval) {
- if (!svp || *svp == &sv_undef)
- DIE(no_aelem, elem);
+ if (!svp || *svp == &sv_undef) {
+ SV* lv;
+ if (!defer)
+ DIE(no_aelem, elem);
+ lv = sv_newmortal();
+ sv_upgrade(lv, SVt_PVLV);
+ LvTYPE(lv) = 'y';
+ sv_magic(lv, Nullsv, 'y', Nullch, 0);
+ LvTARG(lv) = SvREFCNT_inc(av);
+ LvTARGOFF(lv) = elem;
+ LvTARGLEN(lv) = 1;
+ PUSHs(lv);
+ RETURN;
+ }
if (op->op_private & OPpLVAL_INTRO)
save_svref(svp);
else if (op->op_private & OPpDEREF)
- provide_ref(op, *svp);
+ vivify_ref(*svp, op->op_private & OPpDEREF);
}
PUSHs(svp ? *svp : &sv_undef);
RETURN;
}
void
-provide_ref(op, sv)
-OP* op;
+vivify_ref(sv, to_what)
SV* sv;
+U32 to_what;
{
if (SvGMAGICAL(sv))
mg_get(sv);
Safefree(SvPVX(sv));
SvLEN(sv) = SvCUR(sv) = 0;
}
- switch (op->op_private & OPpDEREF)
- {
+ switch (to_what) {
case OPpDEREF_SV:
SvRV(sv) = newSV(0);
break;
SV* sv;
SV* ob;
GV* gv;
- SV* nm;
+ HV* stash;
+ char* name;
+ char* packname;
+ STRLEN packlen;
- nm = TOPs;
+ name = SvPV(TOPs, na);
sv = *(stack_base + TOPMARK + 1);
- gv = 0;
if (SvGMAGICAL(sv))
mg_get(sv);
if (SvROK(sv))
ob = (SV*)SvRV(sv);
else {
GV* iogv;
- char* packname = 0;
- STRLEN packlen;
+ packname = Nullch;
if (!SvOK(sv) ||
!(packname = SvPV(sv, packlen)) ||
!(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) ||
!(ob=(SV*)GvIO(iogv)))
{
- char *name = SvPV(nm, na);
- HV *stash;
- if (!packname || !isALPHA(*packname))
-DIE("Can't call method \"%s\" without a package or object reference", name);
- if (!(stash = gv_stashpvn(packname, packlen, FALSE))) {
- if (gv_stashpvn("UNIVERSAL", 9, FALSE))
- stash = gv_stashpvn(packname, packlen, TRUE);
- else
- DIE("Can't call method \"%s\" in empty package \"%s\"",
- name, packname);
- }
- gv = gv_fetchmethod(stash,name);
- if (!gv)
- DIE("Can't locate object method \"%s\" via package \"%s\"",
- name, packname);
- SETs(isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv);
- RETURN;
+ if (!packname || !isIDFIRST(*packname))
+ DIE("Can't call method \"%s\" without a package or object reference", name);
+ stash = gv_stashpvn(packname, packlen, TRUE);
+ goto fetch;
}
*(stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv));
}
- if (!ob || !SvOBJECT(ob)) {
- char *name = SvPV(nm, na);
+ if (!ob || !SvOBJECT(ob))
DIE("Can't call method \"%s\" on unblessed reference", name);
- }
- if (!gv) { /* nothing cached */
- char *name = SvPV(nm, na);
- gv = gv_fetchmethod(SvSTASH(ob),name);
- if (!gv)
- DIE("Can't locate object method \"%s\" via package \"%s\"",
- name, HvNAME(SvSTASH(ob)));
- }
+ stash = SvSTASH(ob);
+
+ fetch:
+ gv = gv_fetchmethod(stash, name);
+ if (!gv) {
+ char* leaf = name;
+ char* sep = Nullch;
+ char* p;
+ for (p = name; *p; p++) {
+ if (*p == '\'')
+ sep = p, leaf = p + 1;
+ else if (*p == ':' && *(p + 1) == ':')
+ sep = p, leaf = p + 2;
+ }
+ if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) {
+ packname = HvNAME(sep ? curcop->cop_stash : stash);
+ packlen = strlen(packname);
+ }
+ else {
+ packname = name;
+ packlen = sep - name;
+ }
+ DIE("Can't locate object method \"%s\" via package \"%.*s\"",
+ leaf, (int)packlen, packname);
+ }
SETs(isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv);
RETURN;
}
-
projects / p5sagit/p5-mst-13.2.git / blobdiff