/* sv.h
*
- * Copyright (c) 1991-1997, Larry Wall
+ * Copyright (c) 1991-1999, 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.
#define SvANY(sv) (sv)->sv_any
#define SvFLAGS(sv) (sv)->sv_flags
+#define SvREFCNT(sv) (sv)->sv_refcnt
+
+#ifdef USE_THREADS
+
+# ifdef EMULATE_ATOMIC_REFCOUNTS
+# define ATOMIC_INC(count) STMT_START { \
+ MUTEX_LOCK(&PL_svref_mutex); \
+ ++count; \
+ MUTEX_UNLOCK(&PL_svref_mutex); \
+ } STMT_END
+# define ATOMIC_DEC_AND_TEST(res,count) STMT_START { \
+ MUTEX_LOCK(&PL_svref_mutex); \
+ res = (--count == 0); \
+ MUTEX_UNLOCK(&PL_svref_mutex); \
+ } STMT_END
+# else
+# define ATOMIC_INC(count) atomic_inc(&count)
+# define ATOMIC_DEC_AND_TEST(res,count) (res = atomic_dec_and_test(&count))
+# endif /* EMULATE_ATOMIC_REFCOUNTS */
+#else
+# define ATOMIC_INC(count) (++count)
+# define ATOMIC_DEC_AND_TEST(res, count) (res = (--count == 0))
+#endif /* USE_THREADS */
#ifdef __GNUC__
-# define SvREFCNT_inc(sv) ({SV* nsv=(SV*)(sv); if(nsv) ++SvREFCNT(nsv); nsv;})
+# define SvREFCNT_inc(sv) \
+ ({ \
+ SV *nsv = (SV*)(sv); \
+ if (nsv) \
+ ATOMIC_INC(SvREFCNT(nsv)); \
+ nsv; \
+ })
#else
# if defined(CRIPPLED_CC) || defined(USE_THREADS)
# define SvREFCNT_inc(sv) sv_newref((SV*)sv)
# else
-# define SvREFCNT_inc(sv) ((Sv=(SV*)(sv)), (Sv && ++SvREFCNT(Sv)), (SV*)Sv)
+# define SvREFCNT_inc(sv) \
+ ((PL_Sv=(SV*)(sv)), (PL_Sv && ATOMIC_INC(SvREFCNT(PL_Sv))), (SV*)PL_Sv)
# endif
#endif
#define SvREFCNT_dec(sv) sv_free((SV*)sv)
-#endif
#define SVTYPEMASK 0xff
#define SvTYPE(sv) ((sv)->sv_flags & SVTYPEMASK)
#define SVf_BREAK 0x00400000 /* refcnt is artificially low */
#define SVf_READONLY 0x00800000 /* may not be modified */
-#define SVf_THINKFIRST (SVf_READONLY|SVf_ROK)
+#define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE)
#define SVp_IOK 0x01000000 /* has valid non-public integer value */
#define SVp_NOK 0x02000000 /* has valid non-public numeric value */
#define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \
SVp_IOK|SVp_NOK|SVp_POK)
-#ifdef OVERLOAD
-#define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
-#endif /* OVERLOAD */
+#define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
#define PRIVSHIFT 8
double xnv_nv; /* numeric value, if any */
};
+/* These structure must match the beginning of struct xpvhv in hv.h. */
struct xpvmg {
char * xpv_pv; /* pointer to malloced string */
STRLEN xpv_cur; /* length of xpv_pv as a C string */
HV * xcv_stash;
OP * xcv_start;
OP * xcv_root;
- void (*xcv_xsub)_((CV*));
+ void (*xcv_xsub)_((CV* _CPERLproto));
ANY xcv_xsubany;
GV * xcv_gv;
GV * xcv_filegv;
CV * xcv_outside;
#ifdef USE_THREADS
perl_mutex *xcv_mutexp; /* protects xcv_owner */
- struct thread *xcv_owner; /* current owner thread */
+ struct perl_thread *xcv_owner; /* current owner thread */
#endif /* USE_THREADS */
cv_flags_t xcv_flags;
#define IOf_START 2 /* check for null ARGV and substitute '-' */
#define IOf_FLUSH 4 /* this fp wants a flush after write op */
#define IOf_DIDTOP 8 /* just did top of form */
-#define IOf_UNTAINT 16 /* consider this fp (and it's data) "safe" */
+#define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */
+#define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */
/* The following macros define implementation-independent predicates on SVs. */
SVp_IOK|SVp_NOK))
#define SvOK(sv) (SvFLAGS(sv) & SVf_OK)
-
-#ifdef OVERLOAD
#define SvOK_off(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC), \
SvOOK_off(sv))
-#else
-#define SvOK_off(sv) (SvFLAGS(sv) &= ~SVf_OK, SvOOK_off(sv))
-#endif /* OVERLOAD */
#define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK))
#define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK)
#define SvIOK_on(sv) (SvOOK_off(sv), \
SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
#define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK))
-#define SvIOK_only(sv) (SvOOK_off(sv), SvOK_off(sv), \
+#define SvIOK_only(sv) (SvOK_off(sv), \
SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
#define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK)
#define SvPOK(sv) (SvFLAGS(sv) & SVf_POK)
#define SvPOK_on(sv) (SvFLAGS(sv) |= (SVf_POK|SVp_POK))
#define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK))
-
-#ifdef OVERLOAD
-#define SvPOK_only(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC), \
- SvFLAGS(sv) |= (SVf_POK|SVp_POK))
-#else
-#define SvPOK_only(sv) (SvFLAGS(sv) &= ~SVf_OK, \
+#define SvPOK_only(sv) (SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC), \
SvFLAGS(sv) |= (SVf_POK|SVp_POK))
-#endif /* OVERLOAD */
#define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK)
#define SvOOK_on(sv) (SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
#define SvROK(sv) (SvFLAGS(sv) & SVf_ROK)
#define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK)
-
-#ifdef OVERLOAD
#define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVf_AMAGIC))
-#else
-#define SvROK_off(sv) (SvFLAGS(sv) &= ~SVf_ROK)
-#endif /* OVERLOAD */
#define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG))
#define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG))
#define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG)
#define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG)
-#ifdef OVERLOAD
-#define SvAMAGIC(sv) (SvFLAGS(sv) & SVf_AMAGIC)
-#define SvAMAGIC_on(sv) (SvFLAGS(sv) |= SVf_AMAGIC)
-#define SvAMAGIC_off(sv) (SvFLAGS(sv) &= ~SVf_AMAGIC)
+#define SvAMAGIC(sv) (SvFLAGS(sv) & SVf_AMAGIC)
+#define SvAMAGIC_on(sv) (SvFLAGS(sv) |= SVf_AMAGIC)
+#define SvAMAGIC_off(sv) (SvFLAGS(sv) &= ~SVf_AMAGIC)
/*
#define Gv_AMG(stash) \
(HV_AMAGICmb(stash) && \
((!HV_AMAGICbad(stash) && HV_AMAGIC(stash)) || Gv_AMupdate(stash)))
*/
-#define Gv_AMG(stash) (amagic_generation && Gv_AMupdate(stash))
-#endif /* OVERLOAD */
+#define Gv_AMG(stash) (PL_amagic_generation && Gv_AMupdate(stash))
#define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST)
#define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len
#define SvLENx(sv) SvLEN(sv)
#define SvEND(sv)(((XPV*) SvANY(sv))->xpv_pv + ((XPV*)SvANY(sv))->xpv_cur)
-#define SvENDx(sv) ((Sv = (sv)), SvEND(Sv))
+#define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv))
#define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
#define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash
#define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags
#define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv))
-#define SvTAINTED_on(sv) STMT_START{ if(tainting){sv_taint(sv);} }STMT_END
-#define SvTAINTED_off(sv) STMT_START{ if(tainting){sv_untaint(sv);} }STMT_END
-
-#define SvTAINT(sv) STMT_START{ if(tainted){SvTAINTED_on(sv);} }STMT_END
-
-#ifdef CRIPPLED_CC
+#define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END
+#define SvTAINTED_off(sv) STMT_START{ if(PL_tainting){sv_untaint(sv);} }STMT_END
+
+#define SvTAINT(sv) \
+ STMT_START { \
+ if (PL_tainting) { \
+ dTHR; \
+ if (PL_tainted) \
+ SvTAINTED_on(sv); \
+ } \
+ } STMT_END
#define SvPV_force(sv, lp) sv_pvn_force(sv, &lp)
#define SvPV(sv, lp) sv_pvn(sv, &lp)
+#define SvPV_nolen(sv) sv_pv(sv)
#define SvIVx(sv) sv_iv(sv)
#define SvUVx(sv) sv_uv(sv)
#define SvNVx(sv) sv_nv(sv)
#define SvUV(sv) SvIVx(sv)
#define SvTRUE(sv) SvTRUEx(sv)
-#else /* !CRIPPLED_CC */
+#ifndef CRIPPLED_CC
+/* redefine some things to more efficient inlined versions */
#undef SvIV
#define SvIV(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))
((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force(sv, &lp))
-#undef SvTRUE
-#define SvTRUE(sv) ( \
+#undef SvPV_nolen
+#define SvPV_nolen(sv) \
+ (SvPOK(sv) ? SvPVX(sv) : sv_2pv_nolen(sv))
+
+#ifdef __GNUC__
+# undef SvIVx
+# undef SvUVx
+# undef SvNVx
+# undef SvPVx
+# undef SvTRUE
+# undef SvTRUEx
+# define SvIVx(sv) ({SV *nsv = (SV*)(sv); SvIV(nsv); })
+# define SvUVx(sv) ({SV *nsv = (SV*)(sv); SvUV(nsv); })
+# define SvNVx(sv) ({SV *nsv = (SV*)(sv); SvNV(nsv); })
+# define SvPVx(sv, lp) ({SV *nsv = (sv); SvPV(nsv, lp); })
+# define SvTRUE(sv) ( \
!sv \
? 0 \
: SvPOK(sv) \
- ? ((Xpv = (XPV*)SvANY(sv)) && \
- (*Xpv->xpv_pv > '0' || \
- Xpv->xpv_cur > 1 || \
- (Xpv->xpv_cur && *Xpv->xpv_pv != '0')) \
+ ? (({XPV *nxpv = (XPV*)SvANY(sv); \
+ nxpv && \
+ (*nxpv->xpv_pv > '0' || \
+ nxpv->xpv_cur > 1 || \
+ (nxpv->xpv_cur && *nxpv->xpv_pv != '0')); }) \
? 1 \
: 0) \
: \
: SvNOK(sv) \
? SvNVX(sv) != 0.0 \
: sv_2bool(sv) )
-
-#define SvIVx(sv) ((Sv = (sv)), SvIV(Sv))
-#define SvUVx(sv) ((Sv = (sv)), SvUV(Sv))
-#define SvNVx(sv) ((Sv = (sv)), SvNV(Sv))
-#define SvPVx(sv, lp) ((Sv = (sv)), SvPV(Sv, lp))
-#define SvTRUEx(sv) ((Sv = (sv)), SvTRUE(Sv))
-
-#endif /* CRIPPLED_CC */
+# define SvTRUEx(sv) ({SV *nsv = (sv); SvTRUE(nsv); })
+#else /* __GNUC__ */
+#ifndef USE_THREADS
+/* These inlined macros use globals, which will require a thread
+ * declaration in user code, so we avoid them under threads */
+
+# undef SvIVx
+# undef SvUVx
+# undef SvNVx
+# undef SvPVx
+# undef SvTRUE
+# undef SvTRUEx
+# define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv))
+# define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv))
+# define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv))
+# define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp))
+# define SvTRUE(sv) ( \
+ !sv \
+ ? 0 \
+ : SvPOK(sv) \
+ ? ((PL_Xpv = (XPV*)SvANY(sv)) && \
+ (*PL_Xpv->xpv_pv > '0' || \
+ PL_Xpv->xpv_cur > 1 || \
+ (PL_Xpv->xpv_cur && *PL_Xpv->xpv_pv != '0')) \
+ ? 1 \
+ : 0) \
+ : \
+ SvIOK(sv) \
+ ? SvIVX(sv) != 0 \
+ : SvNOK(sv) \
+ ? SvNVX(sv) != 0.0 \
+ : sv_2bool(sv) )
+# define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv))
+#endif /* !USE_THREADS */
+#endif /* !__GNU__ */
+#endif /* !CRIPPLED_CC */
#define newRV_inc(sv) newRV(sv)
-#ifndef CRIPPLED_CC
-#undef newRV_noinc
-#define newRV_noinc(sv) ((Sv = newRV(sv)), --SvREFCNT(SvRV(Sv)), Sv)
-#endif
-/* the following macro updates any magic values this sv is associated with */
+/* the following macros update any magic values this sv is associated with */
-#define SvSETMAGIC(x) if (SvSMAGICAL(x)) mg_set(x)
+#define SvGETMAGIC(x) STMT_START { if (SvGMAGICAL(x)) mg_get(x); } STMT_END
+#define SvSETMAGIC(x) STMT_START { if (SvSMAGICAL(x)) mg_set(x); } STMT_END
#define SvSetSV_and(dst,src,finally) \
+ STMT_START { \
if ((dst) != (src)) { \
sv_setsv(dst, src); \
finally; \
- }
+ } \
+ } STMT_END
#define SvSetSV_nosteal_and(dst,src,finally) \
+ STMT_START { \
if ((dst) != (src)) { \
U32 tMpF = SvFLAGS(src) & SVs_TEMP; \
SvTEMP_off(src); \
sv_setsv(dst, src); \
SvFLAGS(src) |= tMpF; \
finally; \
- }
+ } \
+ } STMT_END
#define SvSetSV(dst,src) \
SvSetSV_and(dst,src,/*nothing*/;)
#define SvSetMagicSV_nosteal(dst,src) \
SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst))
+#ifdef DEBUGGING
#define SvPEEK(sv) sv_peek(sv)
+#else
+#define SvPEEK(sv) ""
+#endif
-#define SvIMMORTAL(sv) ((sv)==&sv_undef || (sv)==&sv_yes || (sv)==&sv_no)
+#define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no)
-#define boolSV(b) ((b) ? &sv_yes : &sv_no)
+#define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no)
#define isGV(sv) (SvTYPE(sv) == SVt_PVGV)
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