X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/f5d6f09660e01aad6e56a94e20e2fcda90381934..7d4d3e294c3a762ce652db1f04649d524a50ceb9:/pp.h diff --git a/pp.h b/pp.h index 56337fc..2636dbf 100644 --- a/pp.h +++ b/pp.h @@ -30,7 +30,7 @@ the C macro. See C. =for apidoc ms||djSP -Declare Just C. This is actually identical to C, and declares +Declare Just C. This is actually identical to C, and declares a local copy of perl's stack pointer, available via the C macro. See C. (Available for backward source code compatibility with the old (Perl 5.005) thread model.) @@ -57,9 +57,10 @@ Refetch the stack pointer. Used after a callback. See L. #define PUSHMARK(p) \ STMT_START { \ - if (++PL_markstack_ptr == PL_markstack_max) \ - markstack_grow(); \ - *PL_markstack_ptr = (I32)((p) - PL_stack_base);\ + I32 * mark_stack_entry; \ + if (UNLIKELY((mark_stack_entry = ++PL_markstack_ptr) == PL_markstack_max)) \ + mark_stack_entry = markstack_grow(); \ + *mark_stack_entry = (I32)((p) - PL_stack_base); \ } STMT_END #define TOPMARK (*PL_markstack_ptr) @@ -67,7 +68,7 @@ Refetch the stack pointer. Used after a callback. See L. #define dSP SV **sp = PL_stack_sp #define djSP dSP -#define dMARK register SV **mark = PL_stack_base + POPMARK +#define dMARK SV **mark = PL_stack_base + POPMARK #define dORIGMARK const I32 origmark = (I32)(mark - PL_stack_base) #define ORIGMARK (PL_stack_base + origmark) @@ -97,10 +98,11 @@ See C and L for other uses. Pops an SV off the stack. =for apidoc Amn|char*|POPp -Pops a string off the stack. Deprecated. New code should use POPpx. +Pops a string off the stack. =for apidoc Amn|char*|POPpx -Pops a string off the stack. +Pops a string off the stack. Identical to POPp. There are two names for +historical reasons. =for apidoc Amn|char*|POPpbytex Pops a string off the stack which must consist of bytes i.e. characters < 256. @@ -123,7 +125,7 @@ Pops a long off the stack. #define RETURNX(x) return (x, PUTBACK, NORMAL) #define POPs (*sp--) -#define POPp (SvPVx(POPs, PL_na)) /* deprecated */ +#define POPp POPpx #define POPpx (SvPVx_nolen(POPs)) #define POPpconstx (SvPVx_nolen_const(POPs)) #define POPpbytex (SvPVbytex_nolen(POPs)) @@ -132,31 +134,23 @@ Pops a long off the stack. #define POPu ((UV)SvUVx(POPs)) #define POPl ((long)SvIVx(POPs)) #define POPul ((unsigned long)SvIVx(POPs)) -#ifdef HAS_QUAD -#define POPq ((Quad_t)SvIVx(POPs)) -#define POPuq ((Uquad_t)SvUVx(POPs)) -#endif #define TOPs (*sp) #define TOPm1s (*(sp-1)) #define TOPp1s (*(sp+1)) -#define TOPp (SvPV(TOPs, PL_na)) /* deprecated */ +#define TOPp TOPpx #define TOPpx (SvPV_nolen(TOPs)) #define TOPn (SvNV(TOPs)) #define TOPi ((IV)SvIV(TOPs)) #define TOPu ((UV)SvUV(TOPs)) #define TOPl ((long)SvIV(TOPs)) #define TOPul ((unsigned long)SvUV(TOPs)) -#ifdef HAS_QUAD -#define TOPq ((Quad_t)SvIV(TOPs)) -#define TOPuq ((Uquad_t)SvUV(TOPs)) -#endif /* Go to some pains in the rare event that we must extend the stack. */ /* -=for apidoc Am|void|EXTEND|SP|int nitems -Used to extend the argument stack for an XSUB's return values. Once +=for apidoc Am|void|EXTEND|SP|SSize_t nitems +Used to extend the argument stack for an XSUB's return values. Once used, guarantees that there is room for at least C to be pushed onto the stack. @@ -277,16 +271,33 @@ Does not use C. See also C, C and C. =cut */ -#define EXTEND(p,n) STMT_START { if (PL_stack_max - p < (int)(n)) { \ - sp = stack_grow(sp,p, (int) (n)); \ - } } STMT_END - +#ifdef STRESS_REALLOC +# define EXTEND(p,n) STMT_START { \ + sp = stack_grow(sp,p,(SSize_t) (n)); \ + PERL_UNUSED_VAR(sp); \ + } STMT_END /* Same thing, but update mark register too. */ -#define MEXTEND(p,n) STMT_START {if (PL_stack_max - p < (int)(n)) { \ - const int markoff = mark - PL_stack_base; \ - sp = stack_grow(sp,p,(int) (n)); \ - mark = PL_stack_base + markoff; \ - } } STMT_END +# define MEXTEND(p,n) STMT_START { \ + const int markoff = mark - PL_stack_base; \ + sp = stack_grow(sp,p,(SSize_t) (n)); \ + mark = PL_stack_base + markoff; \ + PERL_UNUSED_VAR(sp); \ + } STMT_END +#else +# define EXTEND(p,n) STMT_START { \ + if (UNLIKELY(PL_stack_max - p < (int)(n))) { \ + sp = stack_grow(sp,p,(SSize_t) (n)); \ + PERL_UNUSED_VAR(sp); \ + } } STMT_END +/* Same thing, but update mark register too. */ +# define MEXTEND(p,n) STMT_START { \ + if (UNLIKELY(PL_stack_max - p < (int)(n))) { \ + const int markoff = mark - PL_stack_base; \ + sp = stack_grow(sp,p,(SSize_t) (n)); \ + mark = PL_stack_base + markoff; \ + PERL_UNUSED_VAR(sp); \ + } } STMT_END +#endif #define PUSHs(s) (*++sp = (s)) #define PUSHTARG STMT_START { SvSETMAGIC(TARG); PUSHs(TARG); } STMT_END @@ -295,7 +306,7 @@ Does not use C. See also C, C and C. #define PUSHi(i) STMT_START { sv_setiv(TARG, (IV)(i)); PUSHTARG; } STMT_END #define PUSHu(u) STMT_START { sv_setuv(TARG, (UV)(u)); PUSHTARG; } STMT_END -#define XPUSHs(s) STMT_START { EXTEND(sp,1); (*++sp = (s)); } STMT_END +#define XPUSHs(s) STMT_START { EXTEND(sp,1); *++sp = (s); } STMT_END #define XPUSHTARG STMT_START { SvSETMAGIC(TARG); XPUSHs(TARG); } STMT_END #define XPUSHp(p,l) STMT_START { sv_setpvn(TARG, (p), (l)); XPUSHTARG; } STMT_END #define XPUSHn(n) STMT_START { sv_setnv(TARG, (NV)(n)); XPUSHTARG; } STMT_END @@ -333,45 +344,27 @@ Does not use C. See also C, C and C. #define dPOPiv IV value = POPi #define dTOPuv UV value = TOPu #define dPOPuv UV value = POPu -#ifdef HAS_QUAD -#define dTOPqv Quad_t value = TOPu -#define dPOPqv Quad_t value = POPu -#define dTOPuqv Uquad_t value = TOPuq -#define dPOPuqv Uquad_t value = POPuq -#endif #define dPOPXssrl(X) SV *right = POPs; SV *left = CAT2(X,s) #define dPOPXnnrl(X) NV right = POPn; NV left = CAT2(X,n) #define dPOPXiirl(X) IV right = POPi; IV left = CAT2(X,i) #define USE_LEFT(sv) \ - (SvOK(sv) || SvGMAGICAL(sv) || !(PL_op->op_flags & OPf_STACKED)) -#define dPOPXnnrl_ul(X) \ - NV right = POPn; \ - SV *leftsv = CAT2(X,s); \ - NV left = USE_LEFT(leftsv) ? SvNV(leftsv) : 0.0 -#define dPOPXiirl_ul(X) \ - IV right = POPi; \ - SV *leftsv = CAT2(X,s); \ - IV left = USE_LEFT(leftsv) ? SvIV(leftsv) : 0 + (SvOK(sv) || !(PL_op->op_flags & OPf_STACKED)) #define dPOPXiirl_ul_nomg(X) \ - IV right = POPi; \ + IV right = (sp--, SvIV_nomg(TOPp1s)); \ SV *leftsv = CAT2(X,s); \ IV left = USE_LEFT(leftsv) ? SvIV_nomg(leftsv) : 0 #define dPOPPOPssrl dPOPXssrl(POP) #define dPOPPOPnnrl dPOPXnnrl(POP) -#define dPOPPOPnnrl_ul dPOPXnnrl_ul(POP) #define dPOPPOPiirl dPOPXiirl(POP) -#define dPOPPOPiirl_ul dPOPXiirl_ul(POP) #define dPOPTOPssrl dPOPXssrl(TOP) #define dPOPTOPnnrl dPOPXnnrl(TOP) -#define dPOPTOPnnrl_ul dPOPXnnrl_ul(TOP) #define dPOPTOPnnrl_nomg \ NV right = SvNV_nomg(TOPs); NV left = (sp--, SvNV_nomg(TOPs)) #define dPOPTOPiirl dPOPXiirl(TOP) -#define dPOPTOPiirl_ul dPOPXiirl_ul(TOP) #define dPOPTOPiirl_ul_nomg dPOPXiirl_ul_nomg(TOP) #define dPOPTOPiirl_nomg \ IV right = SvIV_nomg(TOPs); IV left = (sp--, SvIV_nomg(TOPs)) @@ -383,11 +376,11 @@ Does not use C. See also C, C and C. #define RETSETYES RETURNX(SETs(&PL_sv_yes)) #define RETSETNO RETURNX(SETs(&PL_sv_no)) #define RETSETUNDEF RETURNX(SETs(&PL_sv_undef)) +#define RETSETTARG STMT_START { SETTARG; RETURN; } STMT_END #define ARGTARG PL_op->op_targ - /* See OPpTARGET_MY: */ -#define MAXARG (PL_op->op_private & 15) +#define MAXARG (PL_op->op_private & OPpARG4_MASK) #define SWITCHSTACK(f,t) \ STMT_START { \ @@ -399,9 +392,10 @@ Does not use C. See also C, C and C. } STMT_END #define EXTEND_MORTAL(n) \ - STMT_START { \ - if (PL_tmps_ix + (n) >= PL_tmps_max) \ - tmps_grow(n); \ + STMT_START { \ + SSize_t eMiX = PL_tmps_ix + (n); \ + if (UNLIKELY(eMiX >= PL_tmps_max)) \ + (void)Perl_tmps_grow_p(aTHX_ eMiX); \ } STMT_END #define AMGf_noright 1 @@ -410,89 +404,84 @@ Does not use C. See also C, C and C. #define AMGf_unary 8 #define AMGf_numeric 0x10 /* for Perl_try_amagic_bin */ #define AMGf_set 0x20 /* for Perl_try_amagic_bin */ +#define AMGf_want_list 0x40 +#define AMGf_numarg 0x80 /* do SvGETMAGIC on the stack args before checking for overload */ #define tryAMAGICun_MG(method, flags) STMT_START { \ - if ( (SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG)) \ + if ( UNLIKELY((SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG))) \ && Perl_try_amagic_un(aTHX_ method, flags)) \ return NORMAL; \ } STMT_END #define tryAMAGICbin_MG(method, flags) STMT_START { \ - if ( ((SvFLAGS(TOPm1s)|SvFLAGS(TOPs)) & (SVf_ROK|SVs_GMG)) \ + if ( UNLIKELY(((SvFLAGS(TOPm1s)|SvFLAGS(TOPs)) & (SVf_ROK|SVs_GMG))) \ && Perl_try_amagic_bin(aTHX_ method, flags)) \ return NORMAL; \ } STMT_END -#define AMG_CALLun(sv,meth) \ - amagic_call(sv,&PL_sv_undef, CAT2(meth,_amg), AMGf_noright | AMGf_unary) +#define AMG_CALLunary(sv,meth) \ + amagic_call(sv,&PL_sv_undef, meth, AMGf_noright | AMGf_unary) + +/* No longer used in core. Use AMG_CALLunary instead */ +#define AMG_CALLun(sv,meth) AMG_CALLunary(sv, CAT2(meth,_amg)) -#define tryAMAGICunTARGET(meth, shift) \ +#define tryAMAGICunTARGETlist(meth, jump) \ STMT_START { \ dSP; \ - sp--; /* get TARGET from below PL_stack_sp */ \ - { \ - dTARGETSTACKED; \ - dSP; \ - SV *tmpsv; \ - SV *arg= sp[shift]; \ - if (SvAMAGIC(arg) && \ - (tmpsv = amagic_call(arg, &PL_sv_undef, CAT2(meth,_amg), \ - AMGf_noright | AMGf_unary))) { \ - SPAGAIN; \ - sp += shift; \ - sv_setsv(TARG, tmpsv); \ - SETTARG; \ - RETURN; \ + SV *tmpsv; \ + SV *arg= *sp; \ + int gimme = GIMME_V; \ + if (UNLIKELY(SvAMAGIC(arg) && \ + (tmpsv = amagic_call(arg, &PL_sv_undef, meth, \ + AMGf_want_list | AMGf_noright \ + |AMGf_unary)))) \ + { \ + SPAGAIN; \ + if (gimme == G_VOID) { \ + NOOP; \ + } \ + else if (gimme == G_ARRAY) { \ + SSize_t i; \ + SSize_t len; \ + assert(SvTYPE(tmpsv) == SVt_PVAV); \ + len = av_tindex((AV *)tmpsv) + 1; \ + (void)POPs; /* get rid of the arg */ \ + EXTEND(sp, len); \ + for (i = 0; i < len; ++i) \ + PUSHs(av_shift((AV *)tmpsv)); \ + } \ + else { /* AMGf_want_scalar */ \ + dATARGET; /* just use the arg's location */ \ + sv_setsv(TARG, tmpsv); \ + if (opASSIGN) \ + sp--; \ + SETTARG; \ + } \ + PUTBACK; \ + if (jump) { \ + OP *jump_o = NORMAL->op_next; \ + while (jump_o->op_type == OP_NULL) \ + jump_o = jump_o->op_next; \ + assert(jump_o->op_type == OP_ENTERSUB); \ + PL_markstack_ptr--; \ + return jump_o->op_next; \ } \ + return NORMAL; \ } \ } STMT_END -#define tryAMAGICunDEREF_var(meth_enum) \ +/* This is no longer used anywhere in the core. You might wish to consider + calling amagic_deref_call() directly, as it has a cleaner interface. */ +#define tryAMAGICunDEREF(meth) \ STMT_START { \ - SV *tmpsv; \ - SV *arg = *sp; \ - while (SvAMAGIC(arg) && \ - (tmpsv = amagic_call(arg, &PL_sv_undef, meth_enum, \ - AMGf_noright | AMGf_unary))) { \ - SPAGAIN; \ - sv = tmpsv; \ - if (!SvROK(tmpsv)) \ - Perl_croak(aTHX_ "Overloaded dereference did not return a reference"); \ - if (tmpsv == arg || SvRV(tmpsv) == SvRV(arg)) { \ - /* Bail out if it returns us the same reference. */ \ - break; \ - } \ - arg = tmpsv; \ - } \ + sv = amagic_deref_call(*sp, CAT2(meth,_amg)); \ + SPAGAIN; \ } STMT_END -#define tryAMAGICunDEREF(meth) tryAMAGICunDEREF_var(CAT2(meth,_amg)) - #define opASSIGN (PL_op->op_flags & OPf_STACKED) -#define SETsv(sv) STMT_START { \ - if (opASSIGN || (SvFLAGS(TARG) & SVs_PADMY)) \ - { sv_setsv(TARG, (sv)); SETTARG; } \ - else SETs(sv); } STMT_END - -#define SETsvUN(sv) STMT_START { \ - if (SvFLAGS(TARG) & SVs_PADMY) \ - { sv_setsv(TARG, (sv)); SETTARG; } \ - else SETs(sv); } STMT_END - -/* newSVsv does not behave as advertised, so we copy missing - * information by hand */ - -/* SV* ref causes confusion with the member variable - changed SV* ref to SV* tmpRef */ -#define RvDEEPCP(rv) STMT_START { SV* tmpRef=SvRV(rv); SV* rv_copy; \ - if (SvREFCNT(tmpRef)>1 && (rv_copy = AMG_CALLun(rv,copy))) { \ - SvRV_set(rv, rv_copy); \ - SvSETMAGIC(rv); \ - SvREFCNT_dec(tmpRef); \ - } } STMT_END /* =for apidoc mU||LVRET @@ -503,19 +492,47 @@ True if this op will be the return value of an lvalue subroutine #define SvCANEXISTDELETE(sv) \ (!SvRMAGICAL(sv) \ - || ((mg = mg_find((const SV *) sv, PERL_MAGIC_tied)) \ - && (stash = SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(sv), mg)))) \ + || !(mg = mg_find((const SV *) sv, PERL_MAGIC_tied)) \ + || ( (stash = SvSTASH(SvRV(SvTIED_obj(MUTABLE_SV(sv), mg)))) \ && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) \ && gv_fetchmethod_autoload(stash, "DELETE", TRUE) \ ) \ ) +#ifdef PERL_CORE + +/* These are just for Perl_tied_method(), which is not part of the public API. + Use 0x04 rather than the next available bit, to help the compiler if the + architecture can generate more efficient instructions. */ +# define TIED_METHOD_MORTALIZE_NOT_NEEDED 0x04 +# define TIED_METHOD_ARGUMENTS_ON_STACK 0x08 +# define TIED_METHOD_SAY 0x10 + +/* Used in various places that need to dereference a glob or globref */ +# define MAYBE_DEREF_GV_flags(sv,phlags) \ + ( \ + (void)(phlags & SV_GMAGIC && (SvGETMAGIC(sv),0)), \ + isGV_with_GP(sv) \ + ? (GV *)(sv) \ + : SvROK(sv) && SvTYPE(SvRV(sv)) <= SVt_PVLV && \ + (SvGETMAGIC(SvRV(sv)), isGV_with_GP(SvRV(sv))) \ + ? (GV *)SvRV(sv) \ + : NULL \ + ) +# define MAYBE_DEREF_GV(sv) MAYBE_DEREF_GV_flags(sv,SV_GMAGIC) +# define MAYBE_DEREF_GV_nomg(sv) MAYBE_DEREF_GV_flags(sv,0) + +# define FIND_RUNCV_padid_eq 1 +# define FIND_RUNCV_level_eq 2 + +#endif + /* * Local variables: * c-indentation-style: bsd * c-basic-offset: 4 - * indent-tabs-mode: t + * indent-tabs-mode: nil * End: * - * ex: set ts=8 sts=4 sw=4 noet: + * ex: set ts=8 sts=4 sw=4 et: */