X-Git-Url: http://git.vpit.fr/?a=blobdiff_plain;f=Magic.xs;h=e9d9debe0c20c2d17b671d64682ef46be9d52aac;hb=6874df6eb3dcfa6003810e8053c0e3d76afaf19d;hp=2f6db15714aef875fce91a292695c0a647b024a4;hpb=77a84f75f33e3ee44e61182dec76699e23025375;p=perl%2Fmodules%2FVariable-Magic.git diff --git a/Magic.xs b/Magic.xs index 2f6db15..e9d9deb 100644 --- a/Magic.xs +++ b/Magic.xs @@ -1,16 +1,376 @@ +/* This file is part of the Variable::Magic Perl module. + * See http://search.cpan.org/dist/Variable-Magic/ */ + +#include /* , va_{start,arg,end}, ... */ + +#include /* sprintf() */ + #define PERL_NO_GET_CONTEXT #include "EXTERN.h" #include "perl.h" #include "XSUB.h" -#define SIG_WIZ ((U16) (1u << 8 - 1)) +#define __PACKAGE__ "Variable::Magic" + +#ifndef VMG_PERL_PATCHLEVEL +# ifdef PERL_PATCHNUM +# define VMG_PERL_PATCHLEVEL PERL_PATCHNUM +# else +# define VMG_PERL_PATCHLEVEL 0 +# endif +#endif + +#define VMG_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S)))))) + +#define VMG_HAS_PERL_BRANCH(R, V, S) (PERL_REVISION == (R) && PERL_VERSION == (V) && PERL_SUBVERSION >= (S)) + +#define VMG_HAS_PERL_MAINT(R, V, S, P) (PERL_REVISION == (R) && PERL_VERSION == (V) && (VMG_PERL_PATCHLEVEL >= (P) || (!VMG_PERL_PATCHLEVEL && PERL_SUBVERSION >= (S)))) + +/* --- Threads and multiplicity -------------------------------------------- */ + +#ifndef NOOP +# define NOOP +#endif + +#ifndef dNOOP +# define dNOOP +#endif + +#ifndef VMG_MULTIPLICITY +# if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT) +# define VMG_MULTIPLICITY 1 +# else +# define VMG_MULTIPLICITY 0 +# endif +#endif +#if VMG_MULTIPLICITY && !defined(tTHX) +# define tTHX PerlInterpreter* +#endif + +#if VMG_MULTIPLICITY && defined(USE_ITHREADS) && defined(dMY_CXT) && defined(MY_CXT) && defined(START_MY_CXT) && defined(MY_CXT_INIT) && (defined(MY_CXT_CLONE) || defined(dMY_CXT_SV)) +# define VMG_THREADSAFE 1 +# ifndef MY_CXT_CLONE +# define MY_CXT_CLONE \ + dMY_CXT_SV; \ + my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \ + Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \ + sv_setuv(my_cxt_sv, PTR2UV(my_cxtp)) +# endif +#else +# define VMG_THREADSAFE 0 +# undef dMY_CXT +# define dMY_CXT dNOOP +# undef MY_CXT +# define MY_CXT vmg_globaldata +# undef START_MY_CXT +# define START_MY_CXT STATIC my_cxt_t MY_CXT; +# undef MY_CXT_INIT +# define MY_CXT_INIT NOOP +# undef MY_CXT_CLONE +# define MY_CXT_CLONE NOOP +#endif + +#if VMG_THREADSAFE + +STATIC SV *vmg_clone(pTHX_ SV *sv, tTHX owner) { +#define vmg_clone(P, O) vmg_clone(aTHX_ (P), (O)) + CLONE_PARAMS param; + param.stashes = NULL; /* don't need it unless sv is a PVHV */ + param.flags = 0; + param.proto_perl = owner; + return sv_dup(sv, ¶m); +} + +#endif /* VMG_THREADSAFE */ + +/* --- Compatibility ------------------------------------------------------- */ + +#ifndef Newx +# define Newx(v, n, c) New(0, v, n, c) +#endif + +#ifndef SvMAGIC_set +# define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val)) +#endif + +#ifndef mPUSHu +# define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U))) +#endif + +#ifndef SvPV_const +# define SvPV_const SvPV +#endif + +#ifndef PERL_MAGIC_ext +# define PERL_MAGIC_ext '~' +#endif + +#ifndef PERL_MAGIC_tied +# define PERL_MAGIC_tied 'P' +#endif + +#ifndef MGf_COPY +# define MGf_COPY 0 +#endif + +#ifndef MGf_DUP +# define MGf_DUP 0 +#endif + +#ifndef MGf_LOCAL +# define MGf_LOCAL 0 +#endif + +#ifndef IN_PERL_COMPILETIME +# define IN_PERL_COMPILETIME (PL_curcop == &PL_compiling) +#endif + +#if VMG_HAS_PERL(5, 10, 0) || defined(PL_parser) +# ifndef PL_error_count +# define PL_error_count PL_parser->error_count +# endif +#else +# ifndef PL_error_count +# define PL_error_count PL_Ierror_count +# endif +#endif + +/* uvar magic and Hash::Util::FieldHash were commited with 28419 */ +#if VMG_HAS_PERL_MAINT(5, 9, 4, 28419) || VMG_HAS_PERL(5, 10, 0) +# define VMG_UVAR 1 +#else +# define VMG_UVAR 0 +#endif + +/* Applied to dev-5.9 as 25854, integrated to maint-5.8 as 28160 */ +#ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN +# if VMG_HAS_PERL_MAINT(5, 8, 9, 28160) || VMG_HAS_PERL_MAINT(5, 9, 3, 25854) || VMG_HAS_PERL(5, 10, 0) +# define VMG_COMPAT_ARRAY_PUSH_NOLEN 1 +# else +# define VMG_COMPAT_ARRAY_PUSH_NOLEN 0 +# endif +#endif + +/* Applied to dev-5.11 as 34908 */ +#if VMG_HAS_PERL_MAINT(5, 11, 0, 34908) +# define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 1 +#else +# define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 0 +#endif + +/* Applied to dev-5.9 as 31473 (see #43357), integrated to maint-5.8 as 32542 */ +#if VMG_HAS_PERL_MAINT(5, 8, 9, 32542) || VMG_HAS_PERL_MAINT(5, 9, 5, 31473) || VMG_HAS_PERL(5, 10, 0) +# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 1 +#else +# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0 +#endif + +#if VMG_HAS_PERL_MAINT(5, 11, 0, 32969) +# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1 +#else +# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0 +#endif + +#if VMG_UVAR + +/* Bug-free mg_magical - see http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-01/msg00036.html - but specialized to our needs. */ +STATIC void vmg_sv_magicuvar(pTHX_ SV *sv, const char *uf, I32 len) { +#define vmg_sv_magicuvar(S, U, L) vmg_sv_magicuvar(aTHX_ (S), (U), (L)) + const MAGIC* mg; + sv_magic(sv, NULL, PERL_MAGIC_uvar, uf, len); + /* uvar magic has set and get magic, hence this has set SVs_GMG and SVs_SMG. */ + if ((mg = SvMAGIC(sv))) { + SvRMAGICAL_off(sv); + do { + const MGVTBL* const vtbl = mg->mg_virtual; + if (vtbl) { + if (vtbl->svt_clear) { + SvRMAGICAL_on(sv); + break; + } + } + } while ((mg = mg->mg_moremagic)); + } +} + +#endif /* VMG_UVAR */ + +/* --- Stolen chunk of B --------------------------------------------------- */ + +typedef enum { + OPc_NULL = 0, + OPc_BASEOP = 1, + OPc_UNOP = 2, + OPc_BINOP = 3, + OPc_LOGOP = 4, + OPc_LISTOP = 5, + OPc_PMOP = 6, + OPc_SVOP = 7, + OPc_PADOP = 8, + OPc_PVOP = 9, + OPc_LOOP = 10, + OPc_COP = 11, + OPc_MAX = 12 +} opclass; + +STATIC const char *const vmg_opclassnames[] = { + "B::NULL", + "B::OP", + "B::UNOP", + "B::BINOP", + "B::LOGOP", + "B::LISTOP", + "B::PMOP", + "B::SVOP", + "B::PADOP", + "B::PVOP", + "B::LOOP", + "B::COP" +}; + +STATIC opclass vmg_opclass(const OP *o) { + if (!o) + return OPc_NULL; + + if (o->op_type == 0) + return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP; + + if (o->op_type == OP_SASSIGN) + return ((o->op_private & OPpASSIGN_BACKWARDS) ? OPc_UNOP : OPc_BINOP); + + if (o->op_type == OP_AELEMFAST) { + if (o->op_flags & OPf_SPECIAL) + return OPc_BASEOP; + else +#ifdef USE_ITHREADS + return OPc_PADOP; +#else + return OPc_SVOP; +#endif + } + +#ifdef USE_ITHREADS + if (o->op_type == OP_GV || o->op_type == OP_GVSV || o->op_type == OP_RCATLINE) + return OPc_PADOP; +#endif + + switch (PL_opargs[o->op_type] & OA_CLASS_MASK) { + case OA_BASEOP: + return OPc_BASEOP; + case OA_UNOP: + return OPc_UNOP; + case OA_BINOP: + return OPc_BINOP; + case OA_LOGOP: + return OPc_LOGOP; + case OA_LISTOP: + return OPc_LISTOP; + case OA_PMOP: + return OPc_PMOP; + case OA_SVOP: + return OPc_SVOP; + case OA_PADOP: + return OPc_PADOP; + case OA_PVOP_OR_SVOP: + return (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF)) ? OPc_SVOP : OPc_PVOP; + case OA_LOOP: + return OPc_LOOP; + case OA_COP: + return OPc_COP; + case OA_BASEOP_OR_UNOP: + return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP; + case OA_FILESTATOP: + return ((o->op_flags & OPf_KIDS) ? OPc_UNOP : +#ifdef USE_ITHREADS + (o->op_flags & OPf_REF) ? OPc_PADOP : OPc_BASEOP); +#else + (o->op_flags & OPf_REF) ? OPc_SVOP : OPc_BASEOP); +#endif + case OA_LOOPEXOP: + if (o->op_flags & OPf_STACKED) + return OPc_UNOP; + else if (o->op_flags & OPf_SPECIAL) + return OPc_BASEOP; + else + return OPc_PVOP; + } + + return OPc_BASEOP; +} + +/* --- Context-safe global data -------------------------------------------- */ + +#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION + +typedef struct { + HV *wizards; + HV *b__op_stashes[OPc_MAX]; +} my_cxt_t; + +START_MY_CXT + +/* --- Error messages ------------------------------------------------------ */ + +STATIC const char vmg_invalid_wiz[] = "Invalid wizard object"; +STATIC const char vmg_invalid_sig[] = "Invalid numeric signature"; +STATIC const char vmg_wrongargnum[] = "Wrong number of arguments"; +STATIC const char vmg_toomanysigs[] = "Too many magic signatures used"; +STATIC const char vmg_argstorefailed[] = "Error while storing arguments"; +STATIC const char vmg_globstorefail[] = "Couldn't store global wizard information"; + +/* --- Signatures ---------------------------------------------------------- */ + +#define SIG_MIN ((U16) 0u) +#define SIG_MAX ((U16) ((1u << 16) - 1)) +#define SIG_NBR (SIG_MAX - SIG_MIN + 1) + +#define SIG_WZO ((U16) (0x3891)) +#define SIG_WIZ ((U16) (0x3892)) + +/* ... Generate signatures ................................................. */ + +STATIC U16 vmg_gensig(pTHX) { +#define vmg_gensig() vmg_gensig(aTHX) + U16 sig; + char buf[8]; + dMY_CXT; + + if (HvKEYS(MY_CXT.wizards) >= SIG_NBR) + croak(vmg_toomanysigs); + + do { + sig = SIG_NBR * Drand01() + SIG_MIN; + } while (hv_exists(MY_CXT.wizards, buf, sprintf(buf, "%u", sig))); -#define R(S) fprintf(stderr, "R(" #S ") = %d\n", SvREFCNT(sv)) + return sig; +} + +/* --- MGWIZ structure ----------------------------------------------------- */ typedef struct { MGVTBL *vtbl; + U16 sig; - SV *cb_get, *cb_set, *cb_len, *cb_clear, *cb_free, *cb_data; + U8 uvar; + U8 opinfo; + + SV *cb_data; + SV *cb_get, *cb_set, *cb_len, *cb_clear, *cb_free; +#if MGf_COPY + SV *cb_copy; +#endif /* MGf_COPY */ +#if MGf_DUP + SV *cb_dup; +#endif /* MGf_DUP */ +#if MGf_LOCAL + SV *cb_local; +#endif /* MGf_LOCAL */ +#if VMG_UVAR + SV *cb_fetch, *cb_store, *cb_exists, *cb_delete; +#endif /* VMG_UVAR */ +#if VMG_MULTIPLICITY + tTHX owner; +#endif /* VMG_MULTIPLICITY */ } MGWIZ; #define MGWIZ2SV(W) (newSVuv(PTR2UV(W))) @@ -18,28 +378,32 @@ typedef struct { /* ... Construct private data .............................................. */ -STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv) { -#define vmg_data_new(C, S) vmg_data_new(aTHX_ (C), (S)) +STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv, AV *args) { +#define vmg_data_new(C, S, A) vmg_data_new(aTHX_ (C), (S), (A)) SV *nsv; + I32 i, alen = (args == NULL) ? 0 : av_len(args); dSP; - int count; ENTER; SAVETMPS; PUSHMARK(SP); - XPUSHs(sv); + EXTEND(SP, alen + 1); + PUSHs(sv_2mortal(newRV_inc(sv))); + for (i = 0; i < alen; ++i) + PUSHs(*av_fetch(args, i, 0)); PUTBACK; - count = call_sv(ctor, G_SCALAR); + call_sv(ctor, G_SCALAR); SPAGAIN; - - if (count != 1) { croak("Callback needs to return 1 scalar\n"); } nsv = POPs; - SvREFCNT_inc(nsv); /* Or it will be destroyed in FREETMPS */ - +#if VMG_HAS_PERL(5, 8, 3) + SvREFCNT_inc(nsv); /* Or it will be destroyed in FREETMPS */ +#else + nsv = sv_newref(nsv); /* Workaround some bug in SvREFCNT_inc() */ +#endif PUTBACK; FREETMPS; @@ -50,14 +414,18 @@ STATIC SV *vmg_data_new(pTHX_ SV *ctor, SV *sv) { STATIC SV *vmg_data_get(SV *sv, U16 sig) { MAGIC *mg, *moremagic; - MGWIZ *w; if (SvTYPE(sv) >= SVt_PVMG) { for (mg = SvMAGIC(sv); mg; mg = moremagic) { moremagic = mg->mg_moremagic; - if ((mg->mg_type == PERL_MAGIC_ext) && (mg->mg_private == sig)) { break; } + if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) { + MGWIZ *w = SV2MGWIZ(mg->mg_ptr); + if (w->sig == sig) + break; + } } - if (mg) { return mg->mg_obj; } + if (mg) + return mg->mg_obj; } return NULL; @@ -65,40 +433,137 @@ STATIC SV *vmg_data_get(SV *sv, U16 sig) { /* ... Magic cast/dispell .................................................. */ -STATIC UV vmg_cast(pTHX_ SV *sv, SV *wiz) { -#define vmg_cast(S, W) vmg_cast(aTHX_ (S), (W)) +#if VMG_UVAR +STATIC I32 vmg_svt_val(pTHX_ IV, SV *); + +STATIC void vmg_uvar_del(SV *sv, MAGIC *prevmagic, MAGIC *mg, MAGIC *moremagic) { + if (prevmagic) { + prevmagic->mg_moremagic = moremagic; + } else { + SvMAGIC_set(sv, moremagic); + } + mg->mg_moremagic = NULL; + Safefree(mg->mg_ptr); + Safefree(mg); +} +#endif /* VMG_UVAR */ + +STATIC UV vmg_cast(pTHX_ SV *sv, SV *wiz, AV *args) { +#define vmg_cast(S, W, A) vmg_cast(aTHX_ (S), (W), (A)) MAGIC *mg = NULL, *moremagic = NULL; MGWIZ *w; SV *data; + U32 oldgmg = SvGMAGICAL(sv); w = SV2MGWIZ(wiz); if (SvTYPE(sv) >= SVt_PVMG) { for (mg = SvMAGIC(sv); mg; mg = moremagic) { moremagic = mg->mg_moremagic; - if ((mg->mg_type == PERL_MAGIC_ext) && (mg->mg_private == w->sig)) { break; } + if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) { + MGWIZ *z = SV2MGWIZ(mg->mg_ptr); + if (z->sig == w->sig) + break; + } } - if (mg) { return 1; } + if (mg) + return 1; } - data = (w->cb_data) ? vmg_data_new(w->cb_data, sv) : NULL; - mg = sv_magicext(sv, data, PERL_MAGIC_ext, w->vtbl, - (const char *) wiz, HEf_SVKEY); - mg->mg_private = w->sig; + data = (w->cb_data) ? vmg_data_new(w->cb_data, sv, args) : NULL; + mg = sv_magicext(sv, data, PERL_MAGIC_ext, w->vtbl, (const char *) wiz, HEf_SVKEY); + mg->mg_private = SIG_WIZ; +#if MGf_COPY + if (w->cb_copy) + mg->mg_flags |= MGf_COPY; +#endif /* MGf_COPY */ +#if 0 /* MGf_DUP */ + if (w->cb_dup) + mg->mg_flags |= MGf_DUP; +#endif /* MGf_DUP */ +#if MGf_LOCAL + if (w->cb_local) + mg->mg_flags |= MGf_LOCAL; +#endif /* MGf_LOCAL */ + + if (SvTYPE(sv) < SVt_PVHV) + goto done; + + /* The GMAGICAL flag only says that a hash is tied or has uvar magic - get + * magic is actually never called for them. If the GMAGICAL flag was off before + * calling sv_magicext(), the hash isn't tied and has no uvar magic. If it's + * now on, then this wizard has get magic. Hence we can work around the + * get/clear shortcoming by turning the GMAGICAL flag off. If the current magic + * has uvar callbacks, it will be turned back on later. */ + if (!oldgmg && SvGMAGICAL(sv)) + SvGMAGICAL_off(sv); + +#if VMG_UVAR + if (w->uvar) { + MAGIC *prevmagic; + struct ufuncs uf[2]; + + uf[0].uf_val = vmg_svt_val; + uf[0].uf_set = NULL; + uf[0].uf_index = 0; + uf[1].uf_val = NULL; + uf[1].uf_set = NULL; + uf[1].uf_index = 0; + + /* One uvar magic in the chain is enough. */ + for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) { + moremagic = mg->mg_moremagic; + if (mg->mg_type == PERL_MAGIC_uvar) { break; } + } + + if (mg) { /* Found another uvar magic. */ + struct ufuncs *olduf = (struct ufuncs *) mg->mg_ptr; + if (olduf->uf_val == vmg_svt_val) { + /* It's our uvar magic, nothing to do. oldgmg was true. */ + goto done; + } else { + /* It's another uvar magic, backup it and replace it by ours. */ + uf[1] = *olduf; + vmg_uvar_del(sv, prevmagic, mg, moremagic); + } + } + vmg_sv_magicuvar(sv, (const char *) &uf, sizeof(uf)); + /* Our hash now carries uvar magic. The uvar/clear shortcoming has to be + * handled by our uvar callback. */ + } +#endif /* VMG_UVAR */ + +done: return 1; } STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) { #define vmg_dispell(S, Z) vmg_dispell(aTHX_ (S), (Z)) +#if VMG_UVAR + U32 uvars = 0; +#endif /* VMG_UVAR */ MAGIC *mg, *prevmagic, *moremagic = NULL; - MGWIZ *w; if (SvTYPE(sv) < SVt_PVMG) { return 0; } for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic) { moremagic = mg->mg_moremagic; - if ((mg->mg_type == PERL_MAGIC_ext) && (mg->mg_private == sig)) { break; } + if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) { + MGWIZ *w = SV2MGWIZ(mg->mg_ptr); + if (w->sig == sig) { +#if VMG_UVAR + /* If the current has no uvar, short-circuit uvar deletion. */ + uvars = w->uvar ? (uvars + 1) : 0; +#endif /* VMG_UVAR */ + break; +#if VMG_UVAR + } else if (w->uvar) { + ++uvars; + /* We can't break here since we need to find the ext magic to delete. */ +#endif /* VMG_UVAR */ + } + } } if (!mg) { return 0; } @@ -113,38 +578,157 @@ STATIC UV vmg_dispell(pTHX_ SV *sv, U16 sig) { SvREFCNT_dec((SV *) mg->mg_ptr); /* Unreference the wizard */ Safefree(mg); +#if VMG_UVAR + if (uvars == 1 && SvTYPE(sv) >= SVt_PVHV) { + /* mg was the first ext magic in the chain that had uvar */ + + for (mg = moremagic; mg; mg = mg->mg_moremagic) { + if (mg->mg_type == PERL_MAGIC_ext && mg->mg_private == SIG_WIZ) { + MGWIZ *w = SV2MGWIZ(mg->mg_ptr); + if (w->uvar) { + ++uvars; + break; + } + } + } + + if (uvars == 1) { + struct ufuncs *uf; + for (prevmagic = NULL, mg = SvMAGIC(sv); mg; prevmagic = mg, mg = moremagic){ + moremagic = mg->mg_moremagic; + if (mg->mg_type == PERL_MAGIC_uvar) { break; } + } + /* assert(mg); */ + uf = (struct ufuncs *) mg->mg_ptr; + /* assert(uf->uf_val == vmg_svt_val); */ + if (uf[1].uf_val || uf[1].uf_set) { + /* Revert the original uvar magic. */ + uf[0] = uf[1]; + Renew(uf, 1, struct ufuncs); + mg->mg_ptr = (char *) uf; + mg->mg_len = sizeof(struct ufuncs); + } else { + /* Remove the uvar magic. */ + vmg_uvar_del(sv, prevmagic, mg, moremagic); + } + } + } +#endif /* VMG_UVAR */ + return 1; } +/* ... OP info ............................................................. */ + +#define VMG_OP_INFO_NAME 1 +#define VMG_OP_INFO_OBJECT 2 + +#if VMG_THREADSAFE +STATIC perl_mutex vmg_op_name_init_mutex; +#endif + +STATIC U32 vmg_op_name_init = 0; +STATIC unsigned char vmg_op_name_len[MAXO] = { 0 }; + +STATIC void vmg_op_info_init(pTHX_ unsigned int opinfo) { +#define vmg_op_info_init(W) vmg_op_info_init(aTHX_ (W)) + switch (opinfo) { + case VMG_OP_INFO_NAME: +#if VMG_THREADSAFE + MUTEX_LOCK(&vmg_op_name_init_mutex); +#endif + if (!vmg_op_name_init) { + OPCODE t; + for (t = 0; t < OP_max; ++t) + vmg_op_name_len[t] = strlen(PL_op_name[t]); + vmg_op_name_init = 1; + } +#if VMG_THREADSAFE + MUTEX_UNLOCK(&vmg_op_name_init_mutex); +#endif + break; + case VMG_OP_INFO_OBJECT: { + dMY_CXT; + if (!MY_CXT.b__op_stashes[0]) { + opclass c; + require_pv("B.pm"); + for (c = 0; c < OPc_MAX; ++c) + MY_CXT.b__op_stashes[c] = gv_stashpv(vmg_opclassnames[c], 1); + } + break; + } + default: + break; + } +} + +STATIC SV *vmg_op_info(pTHX_ unsigned int opinfo) { +#define vmg_op_info(W) vmg_op_info(aTHX_ (W)) + if (!PL_op) + return &PL_sv_undef; + + switch (opinfo) { + case VMG_OP_INFO_NAME: { + OPCODE t = PL_op->op_type; + return sv_2mortal(newSVpvn(PL_op_name[t], vmg_op_name_len[t])); + } + case VMG_OP_INFO_OBJECT: { + dMY_CXT; + return sv_bless(sv_2mortal(newRV_noinc(newSViv(PTR2IV(PL_op)))), + MY_CXT.b__op_stashes[vmg_opclass(PL_op)]); + } + default: + break; + } + + return &PL_sv_undef; +} + /* ... svt callbacks ....................................................... */ -STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data) { -#define vmg_cb_call(I, S, D) vmg_cb_call(aTHX_ (I), (S), (D)) +#define VMG_CB_CALL_SET_RET(D) \ + { \ + SV *svr; \ + SPAGAIN; \ + svr = POPs; \ + ret = SvOK(svr) ? SvIV(svr) : (D); \ + PUTBACK; \ + } + +#define VMG_CB_CALL_ARGS_MASK 15 +#define VMG_CB_CALL_ARGS_SHIFT 4 +#define VMG_CB_CALL_OPINFO (VMG_OP_INFO_NAME|VMG_OP_INFO_OBJECT) + +STATIC int vmg_cb_call(pTHX_ SV *cb, unsigned int flags, SV *sv, ...) { + va_list ap; int ret; + unsigned int i, args, opinfo; dSP; - int count; + + args = flags & VMG_CB_CALL_ARGS_MASK; + flags >>= VMG_CB_CALL_ARGS_SHIFT; + opinfo = flags & VMG_CB_CALL_OPINFO; ENTER; SAVETMPS; PUSHMARK(SP); - switch (SvTYPE(sv)) { - case SVt_PVAV: - case SVt_PVHV: XPUSHs(sv_2mortal(newRV_inc(sv))); break; - default: XPUSHs(sv); + EXTEND(SP, args + 1); + PUSHs(sv_2mortal(newRV_inc(sv))); + va_start(ap, sv); + for (i = 0; i < args; ++i) { + SV *sva = va_arg(ap, SV *); + PUSHs(sva ? sva : &PL_sv_undef); } - if (data) { XPUSHs(data); } + va_end(ap); + if (opinfo) + XPUSHs(vmg_op_info(opinfo)); PUTBACK; - count = call_sv(cb, G_SCALAR); - - SPAGAIN; + call_sv(cb, G_SCALAR); - if (count != 1) { croak("Callback needs to return 1 scalar\n"); } - ret = POPi; - - PUTBACK; + VMG_CB_CALL_SET_RET(0); FREETMPS; LEAVE; @@ -152,73 +736,313 @@ STATIC int vmg_cb_call(pTHX_ SV *cb, SV *sv, SV *data) { return ret; } +#define vmg_cb_call1(I, F, S, A1) \ + vmg_cb_call(aTHX_ (I), (((F) << VMG_CB_CALL_ARGS_SHIFT) | 1), (S), (A1)) +#define vmg_cb_call2(I, F, S, A1, A2) \ + vmg_cb_call(aTHX_ (I), (((F) << VMG_CB_CALL_ARGS_SHIFT) | 2), (S), (A1), (A2)) +#define vmg_cb_call3(I, F, S, A1, A2, A3) \ + vmg_cb_call(aTHX_ (I), (((F) << VMG_CB_CALL_ARGS_SHIFT) | 3), (S), (A1), (A2), (A3)) + STATIC int vmg_svt_get(pTHX_ SV *sv, MAGIC *mg) { - return vmg_cb_call(SV2MGWIZ(mg->mg_ptr)->cb_get, sv, mg->mg_obj); + const MGWIZ *w = SV2MGWIZ(mg->mg_ptr); + return vmg_cb_call1(w->cb_get, w->opinfo, sv, mg->mg_obj); } STATIC int vmg_svt_set(pTHX_ SV *sv, MAGIC *mg) { - return vmg_cb_call(SV2MGWIZ(mg->mg_ptr)->cb_set, sv, mg->mg_obj); + const MGWIZ *w = SV2MGWIZ(mg->mg_ptr); + return vmg_cb_call1(w->cb_set, w->opinfo, sv, mg->mg_obj); } STATIC U32 vmg_svt_len(pTHX_ SV *sv, MAGIC *mg) { - U32 ret; + const MGWIZ *w = SV2MGWIZ(mg->mg_ptr); + unsigned int opinfo = w->opinfo; + U32 len, ret; + svtype t = SvTYPE(sv); dSP; - int count; ENTER; SAVETMPS; PUSHMARK(SP); - switch (SvTYPE(sv)) { - case SVt_PVAV: - case SVt_PVHV: XPUSHs(sv_2mortal(newRV_inc(sv))); break; - default: XPUSHs(sv); - } - XPUSHs((mg->mg_obj) ? (mg->mg_obj) : &PL_sv_undef); - if (SvTYPE(sv) == SVt_PVAV) { - XPUSHs(sv_2mortal(newSViv(av_len((AV *) sv) + 1))); + EXTEND(SP, 3); + PUSHs(sv_2mortal(newRV_inc(sv))); + PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef); + if (t < SVt_PVAV) { + STRLEN l; + U8 *s = (U8 *) SvPV_const(sv, l); + if (DO_UTF8(sv)) + len = utf8_length(s, s + l); + else + len = l; + mPUSHu(len); + } else if (t == SVt_PVAV) { + len = av_len((AV *) sv) + 1; + mPUSHu(len); + } else { + len = 0; + PUSHs(&PL_sv_undef); } + if (opinfo) + XPUSHs(vmg_op_info(opinfo)); PUTBACK; - count = call_sv(SV2MGWIZ(mg->mg_ptr)->cb_len, G_SCALAR); - - SPAGAIN; - - if (count != 1) { croak("Callback needs to return 1 scalar\n"); } - ret = POPi; + call_sv(w->cb_len, G_SCALAR); - PUTBACK; + VMG_CB_CALL_SET_RET(len); FREETMPS; LEAVE; - return ret - 1; + return t == SVt_PVAV ? ret - 1 : ret; } STATIC int vmg_svt_clear(pTHX_ SV *sv, MAGIC *mg) { - return vmg_cb_call(SV2MGWIZ(mg->mg_ptr)->cb_clear, sv, mg->mg_obj); + const MGWIZ *w = SV2MGWIZ(mg->mg_ptr); + return vmg_cb_call1(w->cb_clear, w->opinfo, sv, mg->mg_obj); } STATIC int vmg_svt_free(pTHX_ SV *sv, MAGIC *mg) { - /* So that it can survive tmp cleanup in vmg_cb_call */ - if (SvREFCNT(sv) <= 0) { SvREFCNT_inc(sv); } + const MGWIZ *w; + unsigned int had_err, has_err, flags = G_SCALAR | G_EVAL; + int ret = 0; + + dSP; + + /* Don't even bother if we are in global destruction - the wizard is prisoner + * of circular references and we are way beyond user realm */ + if (PL_dirty) + return 0; + + w = SV2MGWIZ(mg->mg_ptr); + + /* So that it survives the temp cleanup below */ + SvREFCNT_inc(sv); + +#if !VMG_HAS_PERL_MAINT(5, 11, 0, 32686) + /* The previous magic tokens were freed but the magic chain wasn't updated, so + * if you access the sv from the callback the old deleted magics will trigger + * and cause memory misreads. Change 32686 solved it that way : */ + SvMAGIC_set(sv, mg); +#endif + + ENTER; + SAVETMPS; + + PUSHMARK(SP); + EXTEND(SP, 2); + PUSHs(sv_2mortal(newRV_inc(sv))); + PUSHs(mg->mg_obj ? mg->mg_obj : &PL_sv_undef); + if (w->opinfo) + XPUSHs(vmg_op_info(w->opinfo)); + PUTBACK; + + had_err = SvTRUE(ERRSV); + if (had_err) + flags |= G_KEEPERR; + + call_sv(w->cb_free, flags); + + has_err = SvTRUE(ERRSV); + if (IN_PERL_COMPILETIME && !had_err && has_err) + ++PL_error_count; + + VMG_CB_CALL_SET_RET(0); + + FREETMPS; + LEAVE; + + if (has_err) { + /* Get the eval context that was pushed by call_sv, and fake an entry for the + * namesv, as die_where will need it to be non NULL later */ + PERL_CONTEXT *cx = cxstack + cxstack_ix + 1; + if (!cx->blk_eval.old_namesv) + cx->blk_eval.old_namesv + = sv_2mortal(newSVpvn_share("Variable/Magic/DUMMY.pm", 23, 0)); + } + + /* Calling SvREFCNT_dec() will trigger destructors in an infinite loop, so + * we have to rely on SvREFCNT() being a lvalue. Heck, even the core does it */ + --SvREFCNT(sv); + /* Perl_mg_free will get rid of the magic and decrement mg->mg_obj and * mg->mg_ptr reference count */ - return vmg_cb_call(SV2MGWIZ(mg->mg_ptr)->cb_free, sv, mg->mg_obj); + return ret; } +#if MGf_COPY +STATIC int vmg_svt_copy(pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *key, +# if VMG_HAS_PERL_MAINT(5, 11, 0, 33256) + I32 keylen +# else + int keylen +# endif + ) { + SV *keysv; + const MGWIZ *w = SV2MGWIZ(mg->mg_ptr); + int ret; + + if (keylen == HEf_SVKEY) { + keysv = (SV *) key; + } else { + keysv = newSVpvn(key, keylen); + } + + ret = vmg_cb_call3(w->cb_copy, w->opinfo, sv, mg->mg_obj, keysv, nsv); + + if (keylen != HEf_SVKEY) { + SvREFCNT_dec(keysv); + } + + return ret; +} +#endif /* MGf_COPY */ + +#if 0 /* MGf_DUP */ +STATIC int vmg_svt_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) { + return 0; +} +#endif /* MGf_DUP */ + +#if MGf_LOCAL +STATIC int vmg_svt_local(pTHX_ SV *nsv, MAGIC *mg) { + const MGWIZ *w = SV2MGWIZ(mg->mg_ptr); + return vmg_cb_call1(w->cb_local, w->opinfo, nsv, mg->mg_obj); +} +#endif /* MGf_LOCAL */ + +#if VMG_UVAR +STATIC OP *vmg_pp_resetuvar(pTHX) { + SvRMAGICAL_on(cSVOP_sv); + return NORMAL; +} + +STATIC I32 vmg_svt_val(pTHX_ IV action, SV *sv) { + struct ufuncs *uf; + MAGIC *mg, *umg; + SV *key = NULL, *newkey = NULL; + int tied = 0; + + umg = mg_find(sv, PERL_MAGIC_uvar); + /* umg can't be NULL or we wouldn't be there. */ + key = umg->mg_obj; + uf = (struct ufuncs *) umg->mg_ptr; + + if (uf[1].uf_val != NULL) { uf[1].uf_val(aTHX_ action, sv); } + if (uf[1].uf_set != NULL) { uf[1].uf_set(aTHX_ action, sv); } + + action &= HV_FETCH_ISSTORE | HV_FETCH_ISEXISTS | HV_FETCH_LVALUE | HV_DELETE; + for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { + const MGWIZ *w; + switch (mg->mg_type) { + case PERL_MAGIC_ext: + break; + case PERL_MAGIC_tied: + ++tied; + continue; + default: + continue; + } + if (mg->mg_private != SIG_WIZ) continue; + w = SV2MGWIZ(mg->mg_ptr); + switch (w->uvar) { + case 0: + continue; + case 2: + if (!newkey) + newkey = key = umg->mg_obj = sv_mortalcopy(umg->mg_obj); + } + switch (action) { + case 0: + if (w->cb_fetch) + vmg_cb_call2(w->cb_fetch, w->opinfo, sv, mg->mg_obj, key); + break; + case HV_FETCH_ISSTORE: + case HV_FETCH_LVALUE: + case (HV_FETCH_ISSTORE|HV_FETCH_LVALUE): + if (w->cb_store) + vmg_cb_call2(w->cb_store, w->opinfo, sv, mg->mg_obj, key); + break; + case HV_FETCH_ISEXISTS: + if (w->cb_exists) + vmg_cb_call2(w->cb_exists, w->opinfo, sv, mg->mg_obj, key); + break; + case HV_DELETE: + if (w->cb_delete) + vmg_cb_call2(w->cb_delete, w->opinfo, sv, mg->mg_obj, key); + break; + } + } + + if (SvRMAGICAL(sv) && !tied) { + /* Temporarily hide the RMAGICAL flag of the hash so it isn't wrongly + * mistaken for a tied hash by the rest of hv_common. It will be reset by + * the op_ppaddr of a new fake op injected between the current and the next + * one. */ + OP *o = PL_op; + if (!o->op_next || o->op_next->op_ppaddr != vmg_pp_resetuvar) { + SVOP *svop; + NewOp(1101, svop, 1, SVOP); + svop->op_type = OP_STUB; + svop->op_ppaddr = vmg_pp_resetuvar; + svop->op_next = o->op_next; + svop->op_flags = 0; + svop->op_sv = sv; + o->op_next = (OP *) svop; + } + SvRMAGICAL_off(sv); + } + + return 0; +} +#endif /* VMG_UVAR */ + /* ... Wizard destructor ................................................... */ STATIC int vmg_wizard_free(pTHX_ SV *wiz, MAGIC *mg) { - MGWIZ *w = SV2MGWIZ(wiz); + char buf[8]; + MGWIZ *w; + + if (PL_dirty) /* During global destruction, the context is already freed */ + return 0; + + w = SV2MGWIZ(wiz); +#if VMG_MULTIPLICITY + if (w->owner != aTHX) + return 0; + w->owner = NULL; +#endif /* VMG_MULTIPLICITY */ + + { + dMY_CXT; + if (hv_delete(MY_CXT.wizards, buf, sprintf(buf, "%u", w->sig), 0) != wiz) + return 0; + } + SvFLAGS(wiz) |= SVf_BREAK; + FREETMPS; + if (w->cb_data != NULL) { SvREFCNT_dec(SvRV(w->cb_data)); } if (w->cb_get != NULL) { SvREFCNT_dec(SvRV(w->cb_get)); } if (w->cb_set != NULL) { SvREFCNT_dec(SvRV(w->cb_set)); } if (w->cb_len != NULL) { SvREFCNT_dec(SvRV(w->cb_len)); } if (w->cb_clear != NULL) { SvREFCNT_dec(SvRV(w->cb_clear)); } if (w->cb_free != NULL) { SvREFCNT_dec(SvRV(w->cb_free)); } - if (w->cb_data != NULL) { SvREFCNT_dec(SvRV(w->cb_data)); } +#if MGf_COPY + if (w->cb_copy != NULL) { SvREFCNT_dec(SvRV(w->cb_copy)); } +#endif /* MGf_COPY */ +#if 0 /* MGf_DUP */ + if (w->cb_dup != NULL) { SvREFCNT_dec(SvRV(w->cb_dup)); } +#endif /* MGf_DUP */ +#if MGf_LOCAL + if (w->cb_local != NULL) { SvREFCNT_dec(SvRV(w->cb_local)); } +#endif /* MGf_LOCAL */ +#if VMG_UVAR + if (w->cb_fetch != NULL) { SvREFCNT_dec(SvRV(w->cb_fetch)); } + if (w->cb_store != NULL) { SvREFCNT_dec(SvRV(w->cb_store)); } + if (w->cb_exists != NULL) { SvREFCNT_dec(SvRV(w->cb_exists)); } + if (w->cb_delete != NULL) { SvREFCNT_dec(SvRV(w->cb_delete)); } +#endif /* VMG_UVAR */ + Safefree(w->vtbl); Safefree(w); @@ -231,17 +1055,146 @@ STATIC MGVTBL vmg_wizard_vtbl = { NULL, /* len */ NULL, /* clear */ vmg_wizard_free, /* free */ -#ifdef MGf_COPY +#if MGf_COPY NULL, /* copy */ #endif /* MGf_COPY */ -#ifdef MGf_DUP +#if MGf_DUP NULL, /* dup */ #endif /* MGf_DUP */ +#if MGf_LOCAL + NULL, /* local */ +#endif /* MGf_LOCAL */ }; -STATIC const char vmg_invalid_wiz[] = "Invalid wizard object"; -STATIC const char vmg_invalid_sv[] = "Invalid variable"; -STATIC const char vmg_invalid_sig[] = "Invalid numeric signature"; +STATIC U16 vmg_sv2sig(pTHX_ SV *sv) { +#define vmg_sv2sig(S) vmg_sv2sig(aTHX_ (S)) + IV sig; + + if (SvIOK(sv)) { + sig = SvIVX(sv); + } else if (SvNOK(sv)) { + sig = SvNVX(sv); + } else if ((SvPOK(sv) && grok_number(SvPVX(sv), SvCUR(sv), NULL))) { + sig = SvIV(sv); + } else { + croak(vmg_invalid_sig); + } + + if (sig < SIG_MIN || sig > SIG_MAX) + croak(vmg_invalid_sig); + + return sig; +} + +STATIC U16 vmg_wizard_sig(pTHX_ SV *wiz) { +#define vmg_wizard_sig(W) vmg_wizard_sig(aTHX_ (W)) + char buf[8]; + U16 sig; + + if (SvROK(wiz)) { + sig = SV2MGWIZ(SvRV(wiz))->sig; + } else if (SvOK(wiz)) { + sig = vmg_sv2sig(wiz); + } else { + croak(vmg_invalid_wiz); + } + + { + dMY_CXT; + if (!hv_exists(MY_CXT.wizards, buf, sprintf(buf, "%u", sig))) + croak(vmg_invalid_wiz); + } + + return sig; +} + +STATIC SV *vmg_wizard_wiz(pTHX_ SV *wiz) { +#define vmg_wizard_wiz(W) vmg_wizard_wiz(aTHX_ (W)) + char buf[8]; + SV **old; + U16 sig; + + if (SvROK(wiz)) { + wiz = SvRV(wiz); +#if VMG_MULTIPLICITY + if (SV2MGWIZ(wiz)->owner == aTHX) + return wiz; +#endif /* VMG_MULTIPLICITY */ + sig = SV2MGWIZ(wiz)->sig; + } else if (SvOK(wiz)) { + sig = vmg_sv2sig(wiz); + } else { + croak(vmg_invalid_wiz); + } + + { + dMY_CXT; + return (old = hv_fetch(MY_CXT.wizards, buf, sprintf(buf, "%u", sig), 0)) + ? *old : NULL; + } +} + +#define VMG_SET_CB(S, N) \ + cb = (S); \ + w->cb_ ## N = (SvOK(cb) && SvROK(cb)) ? newRV_inc(SvRV(cb)) : NULL; + +#define VMG_SET_SVT_CB(S, N) \ + cb = (S); \ + if (SvOK(cb) && SvROK(cb)) { \ + t->svt_ ## N = vmg_svt_ ## N; \ + w->cb_ ## N = newRV_inc(SvRV(cb)); \ + } else { \ + t->svt_ ## N = NULL; \ + w->cb_ ## N = NULL; \ + } + +#if VMG_THREADSAFE + +#define VMG_CLONE_CB(N) \ + z->cb_ ## N = (w->cb_ ## N) ? newRV_inc(vmg_clone(SvRV(w->cb_ ## N), \ + w->owner)) \ + : NULL; + +STATIC MGWIZ *vmg_wizard_clone(pTHX_ const MGWIZ *w) { +#define vmg_wizard_clone(W) vmg_wizard_clone(aTHX_ (W)) + MGVTBL *t; + MGWIZ *z; + + Newx(t, 1, MGVTBL); + Copy(w->vtbl, t, 1, MGVTBL); + + Newx(z, 1, MGWIZ); + VMG_CLONE_CB(data); + VMG_CLONE_CB(get); + VMG_CLONE_CB(set); + VMG_CLONE_CB(len); + VMG_CLONE_CB(clear); + VMG_CLONE_CB(free); +#if MGf_COPY + VMG_CLONE_CB(copy); +#endif /* MGf_COPY */ +#if MGf_DUP + VMG_CLONE_CB(dup); +#endif /* MGf_DUP */ +#if MGf_LOCAL + VMG_CLONE_CB(local); +#endif /* MGf_LOCAL */ +#if VMG_UVAR + VMG_CLONE_CB(fetch); + VMG_CLONE_CB(store); + VMG_CLONE_CB(exists); + VMG_CLONE_CB(delete); +#endif /* VMG_UVAR */ + z->owner = aTHX; + z->vtbl = t; + z->sig = w->sig; + z->uvar = w->uvar; + z->opinfo = w->opinfo; + + return z; +} + +#endif /* VMG_THREADSAFE */ /* --- XS ------------------------------------------------------------------ */ @@ -249,47 +1202,187 @@ MODULE = Variable::Magic PACKAGE = Variable::Magic PROTOTYPES: ENABLE -SV *_wizard(SV *sig, SV *cb_get, SV *cb_set, SV *cb_len, SV *cb_clear, SV *cb_free, SV *cb_data) -PROTOTYPE: $&&&&& +BOOT: +{ + HV *stash; + MY_CXT_INIT; + MY_CXT.wizards = newHV(); + hv_iterinit(MY_CXT.wizards); /* Allocate iterator */ + MY_CXT.b__op_stashes[0] = NULL; +#if VMG_THREADSAFE + MUTEX_INIT(&vmg_op_name_init_mutex); +#endif + + stash = gv_stashpv(__PACKAGE__, 1); + newCONSTSUB(stash, "SIG_MIN", newSVuv(SIG_MIN)); + newCONSTSUB(stash, "SIG_MAX", newSVuv(SIG_MAX)); + newCONSTSUB(stash, "SIG_NBR", newSVuv(SIG_NBR)); + newCONSTSUB(stash, "MGf_COPY", newSVuv(MGf_COPY)); + newCONSTSUB(stash, "MGf_DUP", newSVuv(MGf_DUP)); + newCONSTSUB(stash, "MGf_LOCAL", newSVuv(MGf_LOCAL)); + newCONSTSUB(stash, "VMG_UVAR", newSVuv(VMG_UVAR)); + newCONSTSUB(stash, "VMG_COMPAT_ARRAY_PUSH_NOLEN", + newSVuv(VMG_COMPAT_ARRAY_PUSH_NOLEN)); + newCONSTSUB(stash, "VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID", + newSVuv(VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID)); + newCONSTSUB(stash, "VMG_COMPAT_ARRAY_UNDEF_CLEAR", + newSVuv(VMG_COMPAT_ARRAY_UNDEF_CLEAR)); + newCONSTSUB(stash, "VMG_COMPAT_SCALAR_LENGTH_NOLEN", + newSVuv(VMG_COMPAT_SCALAR_LENGTH_NOLEN)); + newCONSTSUB(stash, "VMG_PERL_PATCHLEVEL", newSVuv(VMG_PERL_PATCHLEVEL)); + newCONSTSUB(stash, "VMG_THREADSAFE", newSVuv(VMG_THREADSAFE)); + newCONSTSUB(stash, "VMG_OP_INFO_NAME", newSVuv(VMG_OP_INFO_NAME)); + newCONSTSUB(stash, "VMG_OP_INFO_OBJECT", newSVuv(VMG_OP_INFO_OBJECT)); +} + +#if VMG_THREADSAFE + +void +CLONE(...) +PROTOTYPE: DISABLE PREINIT: + HV *hv; + U32 had_b__op_stash = 0; + opclass c; +CODE: + { + HE *key; + dMY_CXT; + hv = newHV(); + hv_iterinit(hv); /* Allocate iterator */ + hv_iterinit(MY_CXT.wizards); + while ((key = hv_iternext(MY_CXT.wizards))) { + STRLEN len; + char *sig = HePV(key, len); + SV *sv; + const MGWIZ *w; + MAGIC *mg; + w = SV2MGWIZ(HeVAL(key)); + w = vmg_wizard_clone(w); + sv = MGWIZ2SV(w); + mg = sv_magicext(sv, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, 0); + mg->mg_private = SIG_WZO; + SvREADONLY_on(sv); + if (!hv_store(hv, sig, len, sv, HeHASH(key))) croak("%s during CLONE", vmg_globstorefail); + } + for (c = 0; c < OPc_MAX; ++c) { + if (MY_CXT.b__op_stashes[c]) + had_b__op_stash |= (((U32) 1) << c); + } + } + { + MY_CXT_CLONE; + MY_CXT.wizards = hv; + for (c = 0; c < OPc_MAX; ++c) { + MY_CXT.b__op_stashes[c] = (had_b__op_stash & (((U32) 1) << c)) + ? gv_stashpv(vmg_opclassnames[c], 1) : NULL; + } + } + +#endif /* VMG_THREADSAFE */ + +SV *_wizard(...) +PROTOTYPE: DISABLE +PREINIT: + I32 i = 0; + U16 sig; + char buf[8]; MGWIZ *w; MGVTBL *t; MAGIC *mg; SV *sv; + SV *svsig; + SV *cb; CODE: - if (!SvIOK(sig)) { croak(vmg_invalid_sig); } + dMY_CXT; + + if (items != 8 +#if MGf_COPY + + 1 +#endif /* MGf_COPY */ +#if MGf_DUP + + 1 +#endif /* MGf_DUP */ +#if MGf_LOCAL + + 1 +#endif /* MGf_LOCAL */ +#if VMG_UVAR + + 5 +#endif /* VMG_UVAR */ + ) { croak(vmg_wrongargnum); } + + svsig = ST(i++); + if (SvOK(svsig)) { + SV **old; + sig = vmg_sv2sig(svsig); + if ((old = hv_fetch(MY_CXT.wizards, buf, sprintf(buf, "%u", sig), 0))) { + ST(0) = sv_2mortal(newRV_inc(*old)); + XSRETURN(1); + } + } else { + sig = vmg_gensig(); + } Newx(t, 1, MGVTBL); - t->svt_get = (SvOK(cb_get)) ? vmg_svt_get : NULL; - t->svt_set = (SvOK(cb_set)) ? vmg_svt_set : NULL; - t->svt_len = (SvOK(cb_len)) ? vmg_svt_len : NULL; - t->svt_clear = (SvOK(cb_clear)) ? vmg_svt_clear : NULL; - t->svt_free = (SvOK(cb_free)) ? vmg_svt_free : NULL; -#ifdef MGf_COPY - t->svt_copy = NULL; + Newx(w, 1, MGWIZ); + + VMG_SET_CB(ST(i++), data); + cb = ST(i++); + w->opinfo = SvOK(cb) ? SvUV(cb) : 0; + if (w->opinfo) + vmg_op_info_init(w->opinfo); + VMG_SET_SVT_CB(ST(i++), get); + VMG_SET_SVT_CB(ST(i++), set); + VMG_SET_SVT_CB(ST(i++), len); + VMG_SET_SVT_CB(ST(i++), clear); + VMG_SET_SVT_CB(ST(i++), free); +#if MGf_COPY + VMG_SET_SVT_CB(ST(i++), copy); #endif /* MGf_COPY */ -#ifdef MGf_DUP - t->svt_dup = NULL; +#if MGf_DUP + /* VMG_SET_SVT_CB(ST(i++), dup); */ + i++; + t->svt_dup = NULL; + w->cb_dup = NULL; #endif /* MGf_DUP */ - - Newx(w, 1, MGWIZ); - w->vtbl = t; - w->sig = SvUVX(sig); - w->cb_get = (SvROK(cb_get)) ? newRV_inc(SvRV(cb_get)) : NULL; - w->cb_set = (SvROK(cb_set)) ? newRV_inc(SvRV(cb_set)) : NULL; - w->cb_len = (SvROK(cb_len)) ? newRV_inc(SvRV(cb_len)) : NULL; - w->cb_clear = (SvROK(cb_clear)) ? newRV_inc(SvRV(cb_clear)) : NULL; - w->cb_free = (SvROK(cb_free)) ? newRV_inc(SvRV(cb_free)) : NULL; - w->cb_data = (SvROK(cb_data)) ? newRV_inc(SvRV(cb_data)) : NULL; +#if MGf_LOCAL + VMG_SET_SVT_CB(ST(i++), local); +#endif /* MGf_LOCAL */ +#if VMG_UVAR + VMG_SET_CB(ST(i++), fetch); + VMG_SET_CB(ST(i++), store); + VMG_SET_CB(ST(i++), exists); + VMG_SET_CB(ST(i++), delete); + cb = ST(i++); + if (w->cb_fetch || w->cb_store || w->cb_exists || w->cb_delete) + w->uvar = SvTRUE(cb) ? 2 : 1; + else + w->uvar = 0; +#endif /* VMG_UVAR */ +#if VMG_MULTIPLICITY + w->owner = aTHX; +#endif /* VMG_MULTIPLICITY */ + w->vtbl = t; + w->sig = sig; sv = MGWIZ2SV(w); - mg = sv_magicext(sv, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, -1); - mg->mg_private = SIG_WIZ; + mg = sv_magicext(sv, NULL, PERL_MAGIC_ext, &vmg_wizard_vtbl, NULL, 0); + mg->mg_private = SIG_WZO; + SvREADONLY_on(sv); + + if (!hv_store(MY_CXT.wizards, buf, sprintf(buf, "%u", sig), sv, 0)) croak(vmg_globstorefail); RETVAL = newRV_noinc(sv); OUTPUT: RETVAL +SV *gensig() +PROTOTYPE: +CODE: + RETVAL = newSVuv(vmg_gensig()); +OUTPUT: + RETVAL + SV *getsig(SV *wiz) PROTOTYPE: $ CODE: @@ -298,23 +1391,42 @@ CODE: OUTPUT: RETVAL -SV *cast(SV *sv, SV *wiz) -PROTOTYPE: \[$@%&*]$ +SV *cast(SV *sv, SV *wiz, ...) +PROTOTYPE: \[$@%&*]$@ +PREINIT: + AV *args = NULL; + SV *ret; CODE: - if (!SvROK(wiz)) { croak(vmg_invalid_wiz); } - RETVAL = newSVuv(vmg_cast(SvRV(sv), SvRV(wiz))); + wiz = vmg_wizard_wiz(wiz); + if (!wiz) + XSRETURN_UNDEF; + if (items > 2) { + I32 i; + args = newAV(); + av_fill(args, items - 2); + for (i = 2; i < items; ++i) { + SV *arg = ST(i); + SvREFCNT_inc(arg); + if (av_store(args, i - 2, arg) == NULL) { croak(vmg_argstorefailed); } + } + } + ret = newSVuv(vmg_cast(SvRV(sv), wiz, args)); + SvREFCNT_dec(args); + RETVAL = ret; OUTPUT: RETVAL -SV *getdata(SV *sv, SV *wiz) +void +getdata(SV *sv, SV *wiz) PROTOTYPE: \[$@%&*]$ PREINIT: SV *data; -CODE: - if (!SvROK(wiz)) { croak(vmg_invalid_wiz); } - data = vmg_data_get(SvRV(sv), SV2MGWIZ(SvRV(wiz))->sig); + U16 sig; +PPCODE: + sig = vmg_wizard_sig(wiz); + data = vmg_data_get(SvRV(sv), sig); if (!data) { XSRETURN_UNDEF; } - ST(0) = newSVsv(data); + ST(0) = data; XSRETURN(1); SV *dispell(SV *sv, SV *wiz) @@ -322,13 +1434,7 @@ PROTOTYPE: \[$@%&*]$ PREINIT: U16 sig; CODE: - if (SvROK(wiz)) { - sig = SV2MGWIZ(SvRV(wiz))->sig; - } else if (SvIOK(wiz)) { - sig = SvUVX(wiz); - } else { - croak(vmg_invalid_wiz); - } + sig = vmg_wizard_sig(wiz); RETVAL = newSVuv(vmg_dispell(SvRV(sv), sig)); OUTPUT: RETVAL