/* pp_hot.c
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
* Fire, Foes! Awake!
*/
+/* This file contains 'hot' pp ("push/pop") functions that
+ * execute the opcodes that make up a perl program. A typical pp function
+ * expects to find its arguments on the stack, and usually pushes its
+ * results onto the stack, hence the 'pp' terminology. Each OP structure
+ * contains a pointer to the relevant pp_foo() function.
+ *
+ * By 'hot', we mean common ops whose execution speed is critical.
+ * By gathering them together into a single file, we encourage
+ * CPU cache hits on hot code. Also it could be taken as a warning not to
+ * change any code in this file unless you're sure it won't affect
+ * performance.
+ */
+
#include "EXTERN.h"
#define PERL_IN_PP_HOT_C
#include "perl.h"
if (PL_op->op_flags & OPf_MOD) {
if (PL_op->op_private & OPpLVAL_INTRO)
SAVECLEARSV(PAD_SVl(PL_op->op_targ));
- else if (PL_op->op_private & OPpDEREF) {
+ if (PL_op->op_private & OPpDEREF) {
PUTBACK;
vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF);
SPAGAIN;
{
dSP; tryAMAGICbinSET(eq,0);
#ifndef NV_PRESERVES_UV
- if (SvROK(TOPs) && SvROK(TOPm1s)) {
+ if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) {
SP--;
SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s)));
RETURN;
GV *gv;
if (SvTYPE(sv) != SVt_PVGV) {
- char *sym;
- STRLEN len;
-
if (SvGMAGICAL(sv)) {
mg_get(sv);
if (SvROK(sv))
}
RETSETUNDEF;
}
- sym = SvPV(sv,len);
if ((PL_op->op_flags & OPf_SPECIAL) &&
!(PL_op->op_flags & OPf_MOD))
{
- gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV);
+ gv = (GV*)gv_fetchsv(sv, FALSE, SVt_PVAV);
if (!gv
- && (!is_gv_magical(sym,len,0)
- || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV))))
+ && (!is_gv_magical_sv(sv,0)
+ || !(gv = (GV*)gv_fetchsv(sv, TRUE, SVt_PVAV))))
{
RETSETUNDEF;
}
}
else {
if (PL_op->op_private & HINT_STRICT_REFS)
- DIE(aTHX_ PL_no_symref, sym, "an ARRAY");
- gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV);
+ DIE(aTHX_ PL_no_symref_sv, sv, "an ARRAY");
+ gv = (GV*)gv_fetchsv(sv, TRUE, SVt_PVAV);
}
}
else {
GV *gv;
if (SvTYPE(sv) != SVt_PVGV) {
- char *sym;
- STRLEN len;
-
if (SvGMAGICAL(sv)) {
mg_get(sv);
if (SvROK(sv))
}
RETSETUNDEF;
}
- sym = SvPV(sv,len);
if ((PL_op->op_flags & OPf_SPECIAL) &&
!(PL_op->op_flags & OPf_MOD))
{
- gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV);
+ gv = (GV*)gv_fetchsv(sv, FALSE, SVt_PVHV);
if (!gv
- && (!is_gv_magical(sym,len,0)
- || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV))))
+ && (!is_gv_magical_sv(sv,0)
+ || !(gv = (GV*)gv_fetchsv(sv, TRUE, SVt_PVHV))))
{
RETSETUNDEF;
}
}
else {
if (PL_op->op_private & HINT_STRICT_REFS)
- DIE(aTHX_ PL_no_symref, sym, "a HASH");
- gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV);
+ DIE(aTHX_ PL_no_symref_sv, sv, "a HASH");
+ gv = (GV*)gv_fetchsv(sv, TRUE, SVt_PVHV);
}
}
else {
i = 0;
while (relem <= lastrelem) { /* gobble up all the rest */
SV **didstore;
- sv = NEWSV(28,0);
assert(*relem);
- sv_setsv(sv,*relem);
+ sv = newSVsv(*relem);
*(relem++) = sv;
didstore = av_store(ary,i++,sv);
if (magic) {
if (SvSCREAM(TARG))
r_flags |= REXEC_SCREAM;
- if ((int)(pm->op_pmflags & PMf_MULTILINE) != PL_multiline) {
- SAVEINT(PL_multiline);
- PL_multiline = pm->op_pmflags & PMf_MULTILINE;
- }
-
play_it_again:
if (global && rx->startp[0] != -1) {
t = s = rx->endp[0] + truebase;
/* undef TARG, and push that undefined value */
if (type != OP_RCATLINE) {
SV_CHECK_THINKFIRST_COW_DROP(TARG);
- (void)SvOK_off(TARG);
+ SvOK_off(TARG);
}
PUSHTARG;
}
if (gimme == G_SCALAR) {
if (type != OP_RCATLINE) {
SV_CHECK_THINKFIRST_COW_DROP(TARG);
- (void)SvOK_off(TARG);
+ SvOK_off(TARG);
}
SPAGAIN;
PUSHTARG;
continue;
}
} else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */
- U8 *s = (U8*)SvPVX(sv) + offset;
- STRLEN len = SvCUR(sv) - offset;
- U8 *f;
+ const U8 *s = (U8*)SvPVX(sv) + offset;
+ const STRLEN len = SvCUR(sv) - offset;
+ const U8 *f;
if (ckWARN(WARN_UTF8) &&
!Perl_is_utf8_string_loc(aTHX_ s, len, &f))
{
dSP;
register PERL_CONTEXT *cx;
- SV* sv;
+ SV *sv, *oldsv;
AV* av;
SV **itersvp;
/* we need a fresh SV every time so that loop body sees a
* completely new SV for closures/references to work as
* they used to */
- SvREFCNT_dec(*itersvp);
+ oldsv = *itersvp;
*itersvp = newSVsv(cur);
+ SvREFCNT_dec(oldsv);
}
if (strEQ(SvPVX(cur), max))
sv_setiv(cur, 0); /* terminate next time */
/* we need a fresh SV every time so that loop body sees a
* completely new SV for closures/references to work as they
* used to */
- SvREFCNT_dec(*itersvp);
+ oldsv = *itersvp;
*itersvp = newSViv(cx->blk_loop.iterix++);
+ SvREFCNT_dec(oldsv);
}
RETPUSHYES;
}
/* iterate array */
- if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av)))
- RETPUSHNO;
-
- SvREFCNT_dec(*itersvp);
+ if (PL_op->op_private & OPpITER_REVERSED) {
+ /* In reverse, use itermax as the min :-) */
+ if (cx->blk_loop.iterix <= cx->blk_loop.itermax)
+ RETPUSHNO;
- if (SvMAGICAL(av) || AvREIFY(av)) {
- SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE);
- if (svp)
- sv = *svp;
- else
- sv = Nullsv;
+ if (SvMAGICAL(av) || AvREIFY(av)) {
+ SV **svp = av_fetch(av, cx->blk_loop.iterix--, FALSE);
+ if (svp)
+ sv = *svp;
+ else
+ sv = Nullsv;
+ }
+ else {
+ sv = AvARRAY(av)[cx->blk_loop.iterix--];
+ }
}
else {
- sv = AvARRAY(av)[++cx->blk_loop.iterix];
+ if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp :
+ AvFILL(av)))
+ RETPUSHNO;
+
+ if (SvMAGICAL(av) || AvREIFY(av)) {
+ SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE);
+ if (svp)
+ sv = *svp;
+ else
+ sv = Nullsv;
+ }
+ else {
+ sv = AvARRAY(av)[++cx->blk_loop.iterix];
+ }
}
+
if (sv && SvREFCNT(sv) == 0) {
*itersvp = Nullsv;
Perl_croak(aTHX_ "Use of freed value in iteration");
sv = (SV*)lv;
}
+ oldsv = *itersvp;
*itersvp = SvREFCNT_inc(sv);
+ SvREFCNT_dec(oldsv);
+
RETPUSHYES;
}
? REXEC_COPY_STR : 0;
if (SvSCREAM(TARG))
r_flags |= REXEC_SCREAM;
- if ((int)(pm->op_pmflags & PMf_MULTILINE) != PL_multiline) {
- SAVEINT(PL_multiline);
- PL_multiline = pm->op_pmflags & PMf_MULTILINE;
- }
+
orig = m = s;
if (rx->reganch & RE_USE_INTUIT) {
PL_bostr = orig;
have_a_cow:
#endif
rxtainted |= RX_MATCH_TAINTED(rx);
- dstr = NEWSV(25, len);
- sv_setpvn(dstr, m, s-m);
+ dstr = newSVpvn(m, s-m);
if (DO_UTF8(TARG))
SvUTF8_on(dstr);
PL_curpm = pm;
} else
#endif
{
- (void)SvOOK_off(TARG);
+ SvOOK_off(TARG);
if (SvLEN(TARG))
Safefree(SvPVX(TARG));
}
PL_curpm = newpm; /* ... and pop $1 et al */
LEAVESUB(sv);
- return pop_return();
+ return cx->blk_sub.retop;
}
/* This duplicates the above code because the above code must not
PL_curpm = newpm; /* ... and pop $1 et al */
LEAVESUB(sv);
- return pop_return();
+ return cx->blk_sub.retop;
}
dMARK;
register I32 items = SP - MARK;
AV* padlist = CvPADLIST(cv);
- push_return(PL_op->op_next);
PUSHBLOCK(cx, CXt_SUB, MARK);
PUSHSUB(cx);
+ cx->blk_sub.retop = PL_op->op_next;
CvDEPTH(cv)++;
/* XXX This would be a natural place to set C<PL_compcv = cv> so
* that eval'' ops within this sub know the correct lexical space.
*/
if (CvDEPTH(cv) >= 2) {
PERL_STACK_OVERFLOW_CHECK();
- pad_push(padlist, CvDEPTH(cv), 1);
+ pad_push(padlist, CvDEPTH(cv));
}
PAD_SET_CUR(padlist, CvDEPTH(cv));
if (hasargs)
RETPUSHUNDEF;
svp = av_fetch(av, elem, lval && !defer);
if (lval) {
+#ifdef PERL_MALLOC_WRAP
+ static const char oom_array_extend[] =
+ "Out of memory during array extend"; /* Duplicated in av.c */
+ if (SvUOK(elemsv)) {
+ UV uv = SvUV(elemsv);
+ elem = uv > IV_MAX ? IV_MAX : uv;
+ }
+ else if (SvNOK(elemsv))
+ elem = (IV)SvNV(elemsv);
+ if (elem > 0)
+ MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend);
+#endif
if (!svp || *svp == &PL_sv_undef) {
SV* lv;
if (!defer)
if (SvTYPE(sv) < SVt_RV)
sv_upgrade(sv, SVt_RV);
else if (SvTYPE(sv) >= SVt_PV) {
- (void)SvOOK_off(sv);
+ SvOOK_off(sv);
Safefree(SvPVX(sv));
SvLEN(sv) = SvCUR(sv) = 0;
}
if (!SvOK(sv) ||
!(packname) ||
- !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) ||
+ !(iogv = gv_fetchsv(sv, FALSE, SVt_PVIO)) ||
!(ob=(SV*)GvIO(iogv)))
{
/* this isn't the name of a filehandle either */
}
return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv;
}
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * vim: shiftwidth=4:
+*/
projects / p5sagit/p5-mst-13.2.git / blobdiff