#include "reentr.h"
-/* variations on pp_null */
-
/* XXX I can't imagine anyone who doesn't have this actually _needs_
it, since pid_t is an integral type.
--AD 2/20/1998
extern Pid_t getpid (void);
#endif
+/* variations on pp_null */
+
PP(pp_stub)
{
dSP;
PP(pp_padav)
{
dSP; dTARGET;
+ I32 gimme;
if (PL_op->op_private & OPpLVAL_INTRO)
SAVECLEARSV(PAD_SVl(PL_op->op_targ));
EXTEND(SP, 1);
PUSHs(TARG);
RETURN;
}
- if (GIMME == G_ARRAY) {
+ gimme = GIMME_V;
+ if (gimme == G_ARRAY) {
I32 maxarg = AvFILL((AV*)TARG) + 1;
EXTEND(SP, maxarg);
if (SvMAGICAL(TARG)) {
}
SP += maxarg;
}
- else {
+ else if (gimme == G_SCALAR) {
SV* sv = sv_newmortal();
I32 maxarg = AvFILL((AV*)TARG) + 1;
sv_setiv(sv, maxarg);
PP(pp_pow)
{
- dSP; dATARGET; tryAMAGICbin(pow,opASSIGN);
+ dSP; dATARGET;
+#ifdef PERL_PRESERVE_IVUV
+ bool is_int = 0;
+#endif
+ tryAMAGICbin(pow,opASSIGN);
#ifdef PERL_PRESERVE_IVUV
- /* ** is implemented with pow. pow is floating point. Perl programmers
- write 2 ** 31 and expect it to be 2147483648
- pow never made any guarantee to deliver a result to 53 (or whatever)
- bits of accuracy. Which is unfortunate, as perl programmers expect it
- to, and on some platforms (eg Irix with long doubles) it doesn't in
- a very visible case. (2 ** 31, which a regression test uses)
- So we'll implement power-of-2 ** +ve integer with multiplies, to avoid
- these problems. */
+ /* For integer to integer power, we do the calculation by hand wherever
+ we're sure it is safe; otherwise we call pow() and try to convert to
+ integer afterwards. */
{
SvIV_please(TOPm1s);
if (SvIOK(TOPm1s)) {
goto float_it; /* Can't do negative powers this way. */
}
}
- /* now we have integer ** positive integer.
- foo & (foo - 1) is zero only for a power of 2. */
+ /* now we have integer ** positive integer. */
+ is_int = 1;
+
+ /* foo & (foo - 1) is zero only for a power of 2. */
if (!(baseuv & (baseuv - 1))) {
- /* We are raising power-of-2 to postive integer.
+ /* We are raising power-of-2 to a positive integer.
The logic here will work for any base (even non-integer
bases) but it can be less accurate than
pow (base,power) or exp (power * log (base)) when the
NV base = baseuok ? baseuv : -(NV)baseuv;
int n = 0;
- /* The logic is this.
- x ** n === x ** m1 * x ** m2 where n = m1 + m2
- so as 42 is 32 + 8 + 2
- x ** 42 can be written as
- x ** 32 * x ** 8 * x ** 2
- I can calculate x ** 2, x ** 4, x ** 8 etc trivially:
- x ** 2n is x ** n * x ** n
- So I loop round, squaring x each time
- (x, x ** 2, x ** 4, x ** 8) and multiply the result
- by the x-value whenever that bit is set in the power.
- To finish as soon as possible I zero bits in the power
- when I've done them, so that power becomes zero when
- I clear the last bit (no more to do), and the loop
- terminates. */
for (; power; base *= base, n++) {
/* Do I look like I trust gcc with long longs here?
Do I hell. */
if (power & bit) {
result *= base;
/* Only bother to clear the bit if it is set. */
- power &= ~bit;
+ power -= bit;
/* Avoid squaring base again if we're done. */
if (power == 0) break;
}
}
SP--;
SETn( result );
+ SvIV_please(TOPs);
RETURN;
- }
- }
- }
+ } else {
+ register unsigned int highbit = 8 * sizeof(UV);
+ register unsigned int lowbit = 0;
+ register unsigned int diff;
+ while ((diff = (highbit - lowbit) >> 1)) {
+ if (baseuv & ~((1 << (lowbit + diff)) - 1))
+ lowbit += diff;
+ else
+ highbit -= diff;
+ }
+ /* we now have baseuv < 2 ** highbit */
+ if (power * highbit <= 8 * sizeof(UV)) {
+ /* result will definitely fit in UV, so use UV math
+ on same algorithm as above */
+ register UV result = 1;
+ register UV base = baseuv;
+ register int n = 0;
+ for (; power; base *= base, n++) {
+ register UV bit = (UV)1 << (UV)n;
+ if (power & bit) {
+ result *= base;
+ power -= bit;
+ if (power == 0) break;
+ }
+ }
+ SP--;
+ if (baseuok || !(power & 1))
+ /* answer is positive */
+ SETu( result );
+ else if (result <= (UV)IV_MAX)
+ /* answer negative, fits in IV */
+ SETi( -(IV)result );
+ else if (result == (UV)IV_MIN)
+ /* 2's complement assumption: special case IV_MIN */
+ SETi( IV_MIN );
+ else
+ /* answer negative, doesn't fit */
+ SETn( -(NV)result );
+ RETURN;
+ }
+ }
+ }
+ }
}
- float_it:
+ float_it:
#endif
{
- dPOPTOPnnrl;
- SETn( Perl_pow( left, right) );
- RETURN;
+ dPOPTOPnnrl;
+ SETn( Perl_pow( left, right) );
+#ifdef PERL_PRESERVE_IVUV
+ if (is_int)
+ SvIV_please(TOPs);
+#endif
+ RETURN;
}
}
sv_setpvn(sv,"",0); /* avoid lexical reincarnation */
}
+ if (SvREFCNT(TARG) > 1) /* don't share the TARG (#20933) */
+ TARG = sv_newmortal();
if (SvTYPE(TARG) < SVt_PVLV) {
sv_upgrade(TARG, SVt_PVLV);
sv_magic(TARG, Nullsv, PERL_MAGIC_substr, Nullch, 0);
SvTAINTED_off(TARG); /* decontaminate */
if (lvalue) { /* it's an lvalue! */
+ if (SvREFCNT(TARG) > 1) /* don't share the TARG (#20933) */
+ TARG = sv_newmortal();
if (SvTYPE(TARG) < SVt_PVLV) {
sv_upgrade(TARG, SVt_PVLV);
sv_magic(TARG, Nullsv, PERL_MAGIC_vec, Nullch, 0);
*tmps++ = (char)value;
*tmps = '\0';
(void)SvPOK_only(TARG);
- if (PL_encoding)
+ if (PL_encoding && !IN_BYTES) {
sv_recode_to_utf8(TARG, PL_encoding);
+ tmps = SvPVX(TARG);
+ if (SvCUR(TARG) == 0 || !is_utf8_string((U8*)tmps, SvCUR(TARG)) ||
+ memEQ(tmps, "\xef\xbf\xbd\0", 4)) {
+ SvGROW(TARG,3);
+ SvCUR_set(TARG, 2);
+ *tmps++ = (U8)UTF8_EIGHT_BIT_HI(value);
+ *tmps++ = (U8)UTF8_EIGHT_BIT_LO(value);
+ *tmps = '\0';
+ SvUTF8_on(TARG);
+ }
+ }
XPUSHs(TARG);
RETURN;
}
register U8 *s;
STRLEN slen;
- if (DO_UTF8(sv)) {
+ SvGETMAGIC(sv);
+ if (DO_UTF8(sv) &&
+ (s = (U8*)SvPV_nomg(sv, slen)) && slen &&
+ UTF8_IS_START(*s)) {
U8 tmpbuf[UTF8_MAXLEN_UCLC+1];
STRLEN ulen;
STRLEN tculen;
- s = (U8*)SvPV(sv, slen);
utf8_to_uvchr(s, &ulen);
-
toTITLE_utf8(s, tmpbuf, &tculen);
utf8_to_uvchr(tmpbuf, 0);
if (!SvPADTMP(sv) || SvREADONLY(sv)) {
dTARGET;
+ /* slen is the byte length of the whole SV.
+ * ulen is the byte length of the original Unicode character
+ * stored as UTF-8 at s.
+ * tculen is the byte length of the freshly titlecased
+ * Unicode character stored as UTF-8 at tmpbuf.
+ * We first set the result to be the titlecased character,
+ * and then append the rest of the SV data. */
sv_setpvn(TARG, (char*)tmpbuf, tculen);
- sv_catpvn(TARG, (char*)(s + ulen), slen - ulen);
+ if (slen > ulen)
+ sv_catpvn(TARG, (char*)(s + ulen), slen - ulen);
SvUTF8_on(TARG);
SETs(TARG);
}
else {
- s = (U8*)SvPV_force(sv, slen);
+ s = (U8*)SvPV_force_nomg(sv, slen);
Copy(tmpbuf, s, tculen, U8);
}
}
if (!SvPADTMP(sv) || SvREADONLY(sv)) {
dTARGET;
SvUTF8_off(TARG); /* decontaminate */
- sv_setsv(TARG, sv);
+ sv_setsv_nomg(TARG, sv);
sv = TARG;
SETs(sv);
}
- s = (U8*)SvPV_force(sv, slen);
+ s = (U8*)SvPV_force_nomg(sv, slen);
if (*s) {
if (IN_LOCALE_RUNTIME) {
TAINT;
*s = toUPPER(*s);
}
}
- if (SvSMAGICAL(sv))
- mg_set(sv);
+ SvSETMAGIC(sv);
RETURN;
}
register U8 *s;
STRLEN slen;
- if (DO_UTF8(sv) && (s = (U8*)SvPV(sv, slen)) && slen && UTF8_IS_START(*s)) {
+ SvGETMAGIC(sv);
+ if (DO_UTF8(sv) &&
+ (s = (U8*)SvPV_nomg(sv, slen)) && slen &&
+ UTF8_IS_START(*s)) {
STRLEN ulen;
U8 tmpbuf[UTF8_MAXLEN_UCLC+1];
U8 *tend;
toLOWER_utf8(s, tmpbuf, &ulen);
uv = utf8_to_uvchr(tmpbuf, 0);
-
tend = uvchr_to_utf8(tmpbuf, uv);
if (!SvPADTMP(sv) || (STRLEN)(tend - tmpbuf) != ulen || SvREADONLY(sv)) {
dTARGET;
sv_setpvn(TARG, (char*)tmpbuf, tend - tmpbuf);
- sv_catpvn(TARG, (char*)(s + ulen), slen - ulen);
+ if (slen > ulen)
+ sv_catpvn(TARG, (char*)(s + ulen), slen - ulen);
SvUTF8_on(TARG);
SETs(TARG);
}
else {
- s = (U8*)SvPV_force(sv, slen);
+ s = (U8*)SvPV_force_nomg(sv, slen);
Copy(tmpbuf, s, ulen, U8);
}
}
if (!SvPADTMP(sv) || SvREADONLY(sv)) {
dTARGET;
SvUTF8_off(TARG); /* decontaminate */
- sv_setsv(TARG, sv);
+ sv_setsv_nomg(TARG, sv);
sv = TARG;
SETs(sv);
}
- s = (U8*)SvPV_force(sv, slen);
+ s = (U8*)SvPV_force_nomg(sv, slen);
if (*s) {
if (IN_LOCALE_RUNTIME) {
TAINT;
*s = toLOWER(*s);
}
}
- if (SvSMAGICAL(sv))
- mg_set(sv);
+ SvSETMAGIC(sv);
RETURN;
}
register U8 *s;
STRLEN len;
+ SvGETMAGIC(sv);
if (DO_UTF8(sv)) {
dTARGET;
STRLEN ulen;
U8 *send;
U8 tmpbuf[UTF8_MAXLEN_UCLC+1];
- s = (U8*)SvPV(sv,len);
+ s = (U8*)SvPV_nomg(sv,len);
if (!len) {
SvUTF8_off(TARG); /* decontaminate */
sv_setpvn(TARG, "", 0);
if (!SvPADTMP(sv) || SvREADONLY(sv)) {
dTARGET;
SvUTF8_off(TARG); /* decontaminate */
- sv_setsv(TARG, sv);
+ sv_setsv_nomg(TARG, sv);
sv = TARG;
SETs(sv);
}
- s = (U8*)SvPV_force(sv, len);
+ s = (U8*)SvPV_force_nomg(sv, len);
if (len) {
register U8 *send = s + len;
}
}
}
- if (SvSMAGICAL(sv))
- mg_set(sv);
+ SvSETMAGIC(sv);
RETURN;
}
register U8 *s;
STRLEN len;
+ SvGETMAGIC(sv);
if (DO_UTF8(sv)) {
dTARGET;
STRLEN ulen;
U8 *send;
U8 tmpbuf[UTF8_MAXLEN_UCLC+1];
- s = (U8*)SvPV(sv,len);
+ s = (U8*)SvPV_nomg(sv,len);
if (!len) {
SvUTF8_off(TARG); /* decontaminate */
sv_setpvn(TARG, "", 0);
if (!SvPADTMP(sv) || SvREADONLY(sv)) {
dTARGET;
SvUTF8_off(TARG); /* decontaminate */
- sv_setsv(TARG, sv);
+ sv_setsv_nomg(TARG, sv);
sv = TARG;
SETs(sv);
}
- s = (U8*)SvPV_force(sv, len);
+ s = (U8*)SvPV_force_nomg(sv, len);
if (len) {
register U8 *send = s + len;
}
}
}
- if (SvSMAGICAL(sv))
- mg_set(sv);
+ SvSETMAGIC(sv);
RETURN;
}
TAINT_IF((pm->op_pmflags & PMf_LOCALE) &&
(pm->op_pmflags & (PMf_WHITE | PMf_SKIPWHITE)));
- PL_reg_match_utf8 = do_utf8;
+ RX_MATCH_UTF8_set(rx, do_utf8);
if (pm->op_pmreplroot) {
#ifdef USE_ITHREADS
#endif
}
else if (gimme != G_ARRAY)
-#ifdef USE_5005THREADS
- ary = (AV*)PAD_SVl(0);
-#else
ary = GvAVn(PL_defgv);
-#endif /* USE_5005THREADS */
else
ary = Nullav;
if (ary && (gimme != G_ARRAY || (pm->op_pmflags & PMf_ONCE))) {
}
/* temporarily switch stacks */
SWITCHSTACK(PL_curstack, ary);
+ PL_curstackinfo->si_stack = ary;
make_mortal = 0;
}
}
if (realarray) {
if (!mg) {
SWITCHSTACK(ary, oldstack);
+ PL_curstackinfo->si_stack = oldstack;
if (SvSMAGICAL(ary)) {
PUTBACK;
mg_set((SV*)ary);
RETPUSHUNDEF;
}
-#ifdef USE_5005THREADS
-void
-Perl_unlock_condpair(pTHX_ void *svv)
-{
- MAGIC *mg = mg_find((SV*)svv, PERL_MAGIC_mutex);
-
- if (!mg)
- Perl_croak(aTHX_ "panic: unlock_condpair unlocking non-mutex");
- MUTEX_LOCK(MgMUTEXP(mg));
- if (MgOWNER(mg) != thr)
- Perl_croak(aTHX_ "panic: unlock_condpair unlocking mutex that we don't own");
- MgOWNER(mg) = 0;
- COND_SIGNAL(MgOWNERCONDP(mg));
- DEBUG_S(PerlIO_printf(Perl_debug_log, "0x%"UVxf": unlock 0x%"UVxf"\n",
- PTR2UV(thr), PTR2UV(svv)));
- MUTEX_UNLOCK(MgMUTEXP(mg));
-}
-#endif /* USE_5005THREADS */
-
PP(pp_lock)
{
dSP;
PP(pp_threadsv)
{
-#ifdef USE_5005THREADS
- dSP;
- EXTEND(SP, 1);
- if (PL_op->op_private & OPpLVAL_INTRO)
- PUSHs(*save_threadsv(PL_op->op_targ));
- else
- PUSHs(THREADSV(PL_op->op_targ));
- RETURN;
-#else
DIE(aTHX_ "tried to access per-thread data in non-threaded perl");
-#endif /* USE_5005THREADS */
}
projects / p5sagit/p5-mst-13.2.git / blobdiff