X-Git-Url: http://git.vpit.fr/?p=perl%2Fmodules%2Findirect.git;a=blobdiff_plain;f=indirect.xs;h=eb6f01f704787ba4785c0b7b1760895aa750972e;hp=5ec4e03e786b56147f88792b0ce23041d7593c8b;hb=8291ef989ac98ee2cb53a6098eed7aa7c3ed0ca8;hpb=cf93cbf9ffecce3a44dad3b7e89d79bf2933e19e diff --git a/indirect.xs b/indirect.xs index 5ec4e03..eb6f01f 100644 --- a/indirect.xs +++ b/indirect.xs @@ -6,6 +6,19 @@ #include "perl.h" #include "XSUB.h" +#define __PACKAGE__ "indirect" +#define __PACKAGE_LEN__ (sizeof(__PACKAGE__)-1) + +/* --- Compatibility wrappers ---------------------------------------------- */ + +#ifndef NOOP +# define NOOP +#endif + +#ifndef dNOOP +# define dNOOP +#endif + #ifndef SvPV_const # define SvPV_const SvPV #endif @@ -18,42 +31,336 @@ # define SvPVX_const SvPVX #endif -/* ... Hints ............................................................... */ +#ifndef sv_catpvn_nomg +# define sv_catpvn_nomg sv_catpvn +#endif + +#ifndef mPUSHu +# define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U))) +#endif + +#ifndef HvNAME_get +# define HvNAME_get(H) HvNAME(H) +#endif + +#ifndef HvNAMELEN_get +# define HvNAMELEN_get(H) strlen(HvNAME_get(H)) +#endif + +#define I_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S)))))) + +#if I_HAS_PERL(5, 10, 0) || defined(PL_parser) +# ifndef PL_lex_inwhat +# define PL_lex_inwhat PL_parser->lex_inwhat +# endif +# ifndef PL_linestr +# define PL_linestr PL_parser->linestr +# endif +# ifndef PL_bufptr +# define PL_bufptr PL_parser->bufptr +# endif +# ifndef PL_oldbufptr +# define PL_oldbufptr PL_parser->oldbufptr +# endif +#else +# ifndef PL_lex_inwhat +# define PL_lex_inwhat PL_Ilex_inwhat +# endif +# ifndef PL_linestr +# define PL_linestr PL_Ilinestr +# endif +# ifndef PL_bufptr +# define PL_bufptr PL_Ibufptr +# endif +# ifndef PL_oldbufptr +# define PL_oldbufptr PL_Ioldbufptr +# endif +#endif + +#ifndef I_WORKAROUND_REQUIRE_PROPAGATION +# define I_WORKAROUND_REQUIRE_PROPAGATION !I_HAS_PERL(5, 10, 1) +#endif + +/* ... Thread safety and multiplicity ...................................... */ + +#ifndef I_MULTIPLICITY +# if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT) +# define I_MULTIPLICITY 1 +# else +# define I_MULTIPLICITY 0 +# endif +#endif +#if I_MULTIPLICITY && !defined(tTHX) +# define tTHX PerlInterpreter* +#endif + +#if I_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 I_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 I_THREADSAFE 0 +# undef dMY_CXT +# define dMY_CXT dNOOP +# undef MY_CXT +# define MY_CXT indirect_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 + +/* --- Helpers ------------------------------------------------------------- */ + +/* ... Thread-safe hints ................................................... */ + +/* If any of those are true, we need to store the hint in a global table. */ + +#if I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION + +typedef struct { + SV *code; +#if I_WORKAROUND_REQUIRE_PROPAGATION + I32 requires; +#endif +} indirect_hint_t; + +#define PTABLE_NAME ptable_hints + +#if I_WORKAROUND_REQUIRE_PROPAGATION +# define PTABLE_VAL_FREE(V) \ + { indirect_hint_t *h = (V); SvREFCNT_dec(h->code); PerlMemShared_free(h); } +#else +# define PTABLE_VAL_FREE(V) SvREFCNT_dec(V) +#endif + +#define pPTBL pTHX +#define pPTBL_ pTHX_ +#define aPTBL aTHX +#define aPTBL_ aTHX_ + +#include "ptable.h" + +#define ptable_hints_store(T, K, V) ptable_hints_store(aTHX_ (T), (K), (V)) +#define ptable_hints_free(T) ptable_hints_free(aTHX_ (T)) + +#endif /* I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION */ + +/* Define the op->str ptable here because we need to be able to clean it during + * thread cleanup. */ + +#define PTABLE_NAME ptable +#define PTABLE_VAL_FREE(V) SvREFCNT_dec(V) + +#define pPTBL pTHX +#define pPTBL_ pTHX_ +#define aPTBL aTHX +#define aPTBL_ aTHX_ + +#include "ptable.h" + +#define ptable_store(T, K, V) ptable_store(aTHX_ (T), (K), (V)) +#define ptable_delete(T, K) ptable_delete(aTHX_ (T), (K)) +#define ptable_clear(T) ptable_clear(aTHX_ (T)) +#define ptable_free(T) ptable_free(aTHX_ (T)) + +#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION + +typedef struct { +#if I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION + ptable *tbl; /* It really is a ptable_hints */ +#endif + ptable *map; + const char *linestr; +#if I_THREADSAFE + tTHX owner; +#endif +} my_cxt_t; + +START_MY_CXT + +#if I_THREADSAFE + +STATIC void indirect_ptable_clone(pTHX_ ptable_ent *ent, void *ud_) { + my_cxt_t *ud = ud_; + indirect_hint_t *h1 = ent->val; + indirect_hint_t *h2 = PerlMemShared_malloc(sizeof *h2); + + *h2 = *h1; + + if (ud->owner != aTHX) { + SV *val = h1->code; + CLONE_PARAMS param; + AV *stashes = (SvTYPE(val) == SVt_PVHV && HvNAME_get(val)) ? newAV() : NULL; + param.stashes = stashes; + param.flags = 0; + param.proto_perl = ud->owner; + h2->code = sv_dup(val, ¶m); + if (stashes) { + av_undef(stashes); + SvREFCNT_dec(stashes); + } + } + + ptable_hints_store(ud->tbl, ent->key, h2); + SvREFCNT_inc(h2->code); +} + +STATIC void indirect_thread_cleanup(pTHX_ void *); + +STATIC void indirect_thread_cleanup(pTHX_ void *ud) { + int *level = ud; + + if (*level) { + *level = 0; + LEAVE; + SAVEDESTRUCTOR_X(indirect_thread_cleanup, level); + ENTER; + } else { + dMY_CXT; + PerlMemShared_free(level); + ptable_free(MY_CXT.map); + ptable_hints_free(MY_CXT.tbl); + } +} + +#endif /* I_THREADSAFE */ + +#if I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION + +STATIC SV *indirect_tag(pTHX_ SV *value) { +#define indirect_tag(V) indirect_tag(aTHX_ (V)) + indirect_hint_t *h; + dMY_CXT; + + value = SvOK(value) && SvROK(value) ? SvRV(value) : NULL; + + h = PerlMemShared_malloc(sizeof *h); + h->code = SvREFCNT_inc(value); + +#if I_WORKAROUND_REQUIRE_PROPAGATION + { + const PERL_SI *si; + I32 requires = 0; + + for (si = PL_curstackinfo; si; si = si->si_prev) { + I32 cxix; + + for (cxix = si->si_cxix; cxix >= 0; --cxix) { + const PERL_CONTEXT *cx = si->si_cxstack + cxix; + + if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE) + ++requires; + } + } + + h->requires = requires; + } +#endif + + /* We only need for the key to be an unique tag for looking up the value later. + * Allocated memory provides convenient unique identifiers, so that's why we + * use the value pointer as the key itself. */ + ptable_hints_store(MY_CXT.tbl, value, h); + + return newSVuv(PTR2UV(value)); +} + +STATIC SV *indirect_detag(pTHX_ const SV *hint) { +#define indirect_detag(H) indirect_detag(aTHX_ (H)) + indirect_hint_t *h; + dMY_CXT; + + if (!(hint && SvOK(hint) && SvIOK(hint))) + return NULL; + + h = ptable_fetch(MY_CXT.tbl, INT2PTR(void *, SvUVX(hint))); + +#if I_WORKAROUND_REQUIRE_PROPAGATION + { + const PERL_SI *si; + I32 requires = 0; + + for (si = PL_curstackinfo; si; si = si->si_prev) { + I32 cxix; + + for (cxix = si->si_cxix; cxix >= 0; --cxix) { + const PERL_CONTEXT *cx = si->si_cxstack + cxix; + + if (CxTYPE(cx) == CXt_EVAL && cx->blk_eval.old_op_type == OP_REQUIRE + && ++requires > h->requires) + return NULL; + } + } + } +#endif + + return h->code; +} + +#else + +STATIC SV *indirect_tag(pTHX_ SV *value) { +#define indirect_tag(V) indirect_tag(aTHX_ (V)) + UV tag = 0; + + if (SvOK(value) && SvROK(value)) { + value = SvRV(value); + SvREFCNT_inc(value); + tag = PTR2UV(value); + } + + return newSVuv(tag); +} + +#define indirect_detag(H) (((H) && SvOK(H)) ? INT2PTR(SV *, SvUVX(H)) : NULL) + +#endif /* I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION */ STATIC U32 indirect_hash = 0; -STATIC IV indirect_hint(pTHX) { +STATIC SV *indirect_hint(pTHX) { #define indirect_hint() indirect_hint(aTHX) - SV *id = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, - NULL, - "indirect", 8, - 0, - indirect_hash); - return (id && SvOK(id) && SvIOK(id)) ? SvIV(id) : 0; + SV *hint, *code; +#if I_HAS_PERL(5, 9, 5) + hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, + NULL, + __PACKAGE__, __PACKAGE_LEN__, + 0, + indirect_hash); +#else + SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__, + indirect_hash); + if (!val) + return 0; + hint = *val; +#endif + return indirect_detag(hint); } /* ... op -> source position ............................................... */ -STATIC HV *indirect_map = NULL; -STATIC const char *indirect_linestr = NULL; - -#define OP2STR(O) (sprintf(buf, "%u", PTR2UV(o))) - STATIC void indirect_map_store(pTHX_ const OP *o, const char *src, SV *sv) { #define indirect_map_store(O, S, N) indirect_map_store(aTHX_ (O), (S), (N)) - char buf[32]; - const char *pl_linestr; + dMY_CXT; SV *val; /* When lex_inwhat is set, we're in a quotelike environment (qq, qr, but not q) * In this case the linestr has temporarly changed, but the old buffer should * still be alive somewhere. */ - if (!PL_parser->lex_inwhat) { - pl_linestr = SvPVX_const(PL_parser->linestr); - if (indirect_linestr != pl_linestr) { - hv_clear(indirect_map); - indirect_linestr = pl_linestr; + if (!PL_lex_inwhat) { + const char *pl_linestr = SvPVX_const(PL_linestr); + if (MY_CXT.linestr != pl_linestr) { + ptable_clear(MY_CXT.map); + MY_CXT.linestr = pl_linestr; } } @@ -62,55 +369,50 @@ STATIC void indirect_map_store(pTHX_ const OP *o, const char *src, SV *sv) { SvUVX(val) = PTR2UV(src); SvIOK_on(val); SvIsUV_on(val); - if (!hv_store(indirect_map, buf, OP2STR(o), val, 0)) - SvREFCNT_dec(val); + SvREADONLY_on(val); + + ptable_store(MY_CXT.map, o, val); } STATIC const char *indirect_map_fetch(pTHX_ const OP *o, SV ** const name) { #define indirect_map_fetch(O, S) indirect_map_fetch(aTHX_ (O), (S)) - char buf[32]; - SV **val; + dMY_CXT; + SV *val; - if (indirect_linestr != SvPVX_const(PL_parser->linestr)) + if (MY_CXT.linestr != SvPVX_const(PL_linestr)) return NULL; - val = hv_fetch(indirect_map, buf, OP2STR(o), 0); + val = ptable_fetch(MY_CXT.map, o); if (!val) { *name = NULL; return NULL; } - *name = *val; - return INT2PTR(const char *, SvUVX(*val)); + *name = val; + return INT2PTR(const char *, SvUVX(val)); } STATIC void indirect_map_delete(pTHX_ const OP *o) { #define indirect_map_delete(O) indirect_map_delete(aTHX_ (O)) - char buf[32]; + dMY_CXT; - hv_delete(indirect_map, buf, OP2STR(o), G_DISCARD); + ptable_delete(MY_CXT.map, o); } -STATIC void indirect_map_clean(pTHX_ const OP *o) { -#define indirect_map_clean(O) indirect_map_clean(aTHX_ (O)) - if (o->op_flags & OPf_KIDS) { - const OP *kid = cUNOPo->op_first; - for (; kid; kid = kid->op_sibling) { - indirect_map_delete(kid); - indirect_map_clean(kid); - } - } else { - indirect_map_delete(o); - } -} +/* --- Check functions ----------------------------------------------------- */ STATIC const char *indirect_find(pTHX_ SV *sv, const char *s) { #define indirect_find(N, S) indirect_find(aTHX_ (N), (S)) STRLEN len; const char *p = NULL, *r = SvPV_const(sv, len); - if (!len) - return s; + if (len >= 1 && *r == '$') { + ++r; + --len; + s = strchr(s, '$'); + if (!s) + return NULL; + } p = strstr(s, r); while (p) { @@ -132,10 +434,13 @@ STATIC OP *indirect_ck_const(pTHX_ OP *o) { if (indirect_hint()) { SV *sv = cSVOPo_sv; - if (SvPOK(sv) && (SvTYPE(sv) >= SVt_PV)) - indirect_map_store(o, indirect_find(sv, PL_parser->oldbufptr), sv); + if (SvPOK(sv) && (SvTYPE(sv) >= SVt_PV)) { + indirect_map_store(o, indirect_find(sv, PL_oldbufptr), sv); + return o; + } } + indirect_map_delete(o); return o; } @@ -146,9 +451,12 @@ STATIC OP *(*indirect_old_ck_rv2sv)(pTHX_ OP *) = 0; STATIC OP *indirect_ck_rv2sv(pTHX_ OP *o) { if (indirect_hint()) { OP *op = cUNOPo->op_first; - const char *name = NULL; + SV *sv; + const char *name = NULL, *s; STRLEN len; - switch (op->op_type) { + OPCODE type = (OPCODE) op->op_type; + + switch (type) { case OP_GV: case OP_GVSV: { GV *gv = cGVOPx_gv(op); @@ -156,23 +464,51 @@ STATIC OP *indirect_ck_rv2sv(pTHX_ OP *o) { len = GvNAMELEN(gv); break; } - default: { - SV *sv = cSVOPx_sv(op); - if (SvPOK(sv) && (SvTYPE(sv) >= SVt_PV)) - name = SvPV_const(sv, len); - break; - } + default: + if ((PL_opargs[type] & OA_CLASS_MASK) == OA_SVOP) { + SV *nsv = cSVOPx_sv(op); + if (SvPOK(nsv) && (SvTYPE(nsv) >= SVt_PV)) + name = SvPV_const(nsv, len); + } } - if (name) { - SV *sv = sv_2mortal(newSVpvn("$", 1)); - sv_catpvn(sv, name, len); - o = CALL_FPTR(indirect_old_ck_rv2sv)(aTHX_ o); - indirect_map_store(o, indirect_find(sv, PL_parser->oldbufptr), sv); - return o; + if (!name) + goto done; + + sv = sv_2mortal(newSVpvn("$", 1)); + sv_catpvn_nomg(sv, name, len); + s = indirect_find(sv, PL_oldbufptr); + if (!s) { /* If it failed, retry without the current stash */ + const char *stash = HvNAME_get(PL_curstash); + STRLEN stashlen = HvNAMELEN_get(PL_curstash); + + if ((len < stashlen + 2) || strnNE(name, stash, stashlen) + || name[stashlen] != ':' || name[stashlen+1] != ':') { + /* Failed again ? Try to remove main */ + stash = "main"; + stashlen = 4; + if ((len < stashlen + 2) || strnNE(name, stash, stashlen) + || name[stashlen] != ':' || name[stashlen+1] != ':') + goto done; + } + + sv_setpvn(sv, "$", 1); + stashlen += 2; + sv_catpvn_nomg(sv, name + stashlen, len - stashlen); + s = indirect_find(sv, PL_oldbufptr); + if (!s) + goto done; } + + o = CALL_FPTR(indirect_old_ck_rv2sv)(aTHX_ o); + indirect_map_store(o, s, sv); + return o; } - return CALL_FPTR(indirect_old_ck_rv2sv)(aTHX_ o); +done: + o = CALL_FPTR(indirect_old_ck_rv2sv)(aTHX_ o); + + indirect_map_delete(o); + return o; } /* ... ck_padany ........................................................... */ @@ -184,15 +520,20 @@ STATIC OP *indirect_ck_padany(pTHX_ OP *o) { if (indirect_hint()) { SV *sv; - const char *s = PL_parser->oldbufptr, *t = PL_parser->bufptr - 1; + const char *s = PL_oldbufptr, *t = PL_bufptr - 1; while (s < t && isSPACE(*s)) ++s; - while (t > s && isSPACE(*t)) --t; - sv = sv_2mortal(newSVpvn(s, t - s + 1)); - - indirect_map_store(o, s, sv); + if (*s == '$' && ++s <= t) { + while (s < t && isSPACE(*s)) ++s; + while (s < t && isSPACE(*t)) --t; + sv = sv_2mortal(newSVpvn("$", 1)); + sv_catpvn_nomg(sv, s, t - s + 1); + indirect_map_store(o, s, sv); + return o; + } } + indirect_map_delete(o); return o; } @@ -210,7 +551,7 @@ STATIC OP *indirect_ck_method(pTHX_ OP *o) { if (!SvPOK(sv) || (SvTYPE(sv) < SVt_PV)) goto done; sv = sv_mortalcopy(sv); - s = indirect_find(sv, PL_parser->oldbufptr); + s = indirect_find(sv, PL_oldbufptr); } o = CALL_FPTR(indirect_old_ck_method)(aTHX_ o); /* o may now be a method_named */ @@ -219,51 +560,98 @@ STATIC OP *indirect_ck_method(pTHX_ OP *o) { } done: - return CALL_FPTR(indirect_old_ck_method)(aTHX_ o); + o = CALL_FPTR(indirect_old_ck_method)(aTHX_ o); + + indirect_map_delete(o); + return o; } /* ... ck_entersub ......................................................... */ -STATIC const char indirect_msg[] = "Indirect call of method \"%s\" on object \"%s\""; - STATIC OP *(*indirect_old_ck_entersub)(pTHX_ OP *) = 0; STATIC OP *indirect_ck_entersub(pTHX_ OP *o) { - LISTOP *op; - OP *om, *oo; - IV hint = indirect_hint(); + SV *code = indirect_hint(); o = CALL_FPTR(indirect_old_ck_entersub)(aTHX_ o); - if (hint) { - const char *pm, *po; - SV *svm, *svo; - oo = o; + if (code) { + const char *mpos, *opos; + SV *mnamesv, *onamesv; + OP *mop, *oop; + LISTOP *lop; + + oop = o; do { - op = (LISTOP *) oo; - if (!op->op_flags & OPf_KIDS) + lop = (LISTOP *) oop; + if (!(lop->op_flags & OPf_KIDS)) goto done; - oo = op->op_first; - } while (oo->op_type != OP_PUSHMARK); - oo = oo->op_sibling; - om = op->op_last; - if (om->op_type == OP_METHOD) - om = cUNOPx(om)->op_first; - else if (om->op_type != OP_METHOD_NAMED) + oop = lop->op_first; + } while (oop->op_type != OP_PUSHMARK); + oop = oop->op_sibling; + mop = lop->op_last; + + if (!oop) goto done; - pm = indirect_map_fetch(om, &svm); - po = indirect_map_fetch(oo, &svo); - if (pm && po && pm < po) { - const char *psvm = SvPV_nolen_const(svm), *psvo = SvPV_nolen_const(svo); - if (hint == 2) - croak(indirect_msg, psvm, psvo); - else - warn(indirect_msg, psvm, psvo); + + switch (oop->op_type) { + case OP_CONST: + case OP_RV2SV: + case OP_PADSV: + break; + default: + goto done; + } + + if (mop->op_type == OP_METHOD) + mop = cUNOPx(mop)->op_first; + else if (mop->op_type != OP_METHOD_NAMED) + goto done; + + mpos = indirect_map_fetch(mop, &mnamesv); + if (!mpos) + goto done; + + opos = indirect_map_fetch(oop, &onamesv); + if (!opos) + goto done; + + if (mpos < opos) { + SV *file; + line_t line; + dSP; + + ENTER; + SAVETMPS; + + onamesv = sv_mortalcopy(onamesv); + mnamesv = sv_mortalcopy(mnamesv); + +#ifdef USE_ITHREADS + file = sv_2mortal(newSVpv(CopFILE(&PL_compiling), 0)); +#else + file = sv_mortalcopy(CopFILESV(&PL_compiling)); +#endif + line = CopLINE(&PL_compiling); + + PUSHMARK(SP); + EXTEND(SP, 4); + PUSHs(onamesv); + PUSHs(mnamesv); + PUSHs(file); + mPUSHu(line); + PUTBACK; + + call_sv(code, G_VOID); + + PUTBACK; + + FREETMPS; + LEAVE; } -done: - indirect_map_clean(o); } +done: return o; } @@ -273,13 +661,25 @@ STATIC U32 indirect_initialized = 0; MODULE = indirect PACKAGE = indirect -PROTOTYPES: DISABLE +PROTOTYPES: ENABLE BOOT: { if (!indirect_initialized++) { - PERL_HASH(indirect_hash, "indirect", 8); - indirect_map = newHV(); + HV *stash; + + MY_CXT_INIT; + MY_CXT.map = ptable_new(); + MY_CXT.linestr = NULL; +#if I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION + MY_CXT.tbl = ptable_new(); +#endif +#if I_THREADSAFE + MY_CXT.owner = aTHX; +#endif + + PERL_HASH(indirect_hash, __PACKAGE__, __PACKAGE_LEN__); + indirect_old_ck_const = PL_check[OP_CONST]; PL_check[OP_CONST] = MEMBER_TO_FPTR(indirect_ck_const); indirect_old_ck_rv2sv = PL_check[OP_RV2SV]; @@ -290,5 +690,49 @@ BOOT: PL_check[OP_METHOD] = MEMBER_TO_FPTR(indirect_ck_method); indirect_old_ck_entersub = PL_check[OP_ENTERSUB]; PL_check[OP_ENTERSUB] = MEMBER_TO_FPTR(indirect_ck_entersub); + + stash = gv_stashpvn(__PACKAGE__, __PACKAGE_LEN__, 1); + newCONSTSUB(stash, "I_THREADSAFE", newSVuv(I_THREADSAFE)); } } + +#if I_THREADSAFE + +void +CLONE(...) +PROTOTYPE: DISABLE +PREINIT: + ptable *t; + int *level; +CODE: + { + my_cxt_t ud; + dMY_CXT; + ud.tbl = t = ptable_new(); + ud.owner = MY_CXT.owner; + ptable_walk(MY_CXT.tbl, indirect_ptable_clone, &ud); + } + { + MY_CXT_CLONE; + MY_CXT.map = ptable_new(); + MY_CXT.linestr = NULL; + MY_CXT.tbl = t; + MY_CXT.owner = aTHX; + } + { + level = PerlMemShared_malloc(sizeof *level); + *level = 1; + LEAVE; + SAVEDESTRUCTOR_X(indirect_thread_cleanup, level); + ENTER; + } + +#endif + +SV * +_tag(SV *value) +PROTOTYPE: $ +CODE: + RETVAL = indirect_tag(value); +OUTPUT: + RETVAL