1 /* This file is part of the indirect Perl module.
2 * See http://search.cpan.org/dist/indirect/ */
4 #define PERL_NO_GET_CONTEXT
9 #define __PACKAGE__ "indirect"
10 #define __PACKAGE_LEN__ (sizeof(__PACKAGE__)-1)
12 /* --- Compatibility wrappers ---------------------------------------------- */
23 # define Newx(v, n, c) New(0, v, n, c)
27 # define SvPV_const SvPV
30 #ifndef SvPV_nolen_const
31 # define SvPV_nolen_const SvPV_nolen
35 # define SvPVX_const SvPVX
38 #ifndef SvREFCNT_inc_simple_void_NN
39 # ifdef SvREFCNT_inc_simple_NN
40 # define SvREFCNT_inc_simple_void_NN SvREFCNT_inc_simple_NN
42 # define SvREFCNT_inc_simple_void_NN SvREFCNT_inc
46 #ifndef sv_catpvn_nomg
47 # define sv_catpvn_nomg sv_catpvn
51 # define mPUSHp(P, L) PUSHs(sv_2mortal(newSVpvn((P), (L))))
55 # define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U)))
59 # define HvNAME_get(H) HvNAME(H)
63 # define HvNAMELEN_get(H) strlen(HvNAME_get(H))
68 # define OpSIBLING(O) OP_SIBLING(O)
70 # define OpSIBLING(O) ((O)->op_sibling)
74 #define I_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
76 #if I_HAS_PERL(5, 10, 0) || defined(PL_parser)
78 # define PL_linestr PL_parser->linestr
81 # define PL_bufptr PL_parser->bufptr
84 # define PL_oldbufptr PL_parser->oldbufptr
86 # ifndef PL_lex_inwhat
87 # define PL_lex_inwhat PL_parser->lex_inwhat
91 # define PL_linestr PL_Ilinestr
94 # define PL_bufptr PL_Ibufptr
97 # define PL_oldbufptr PL_Ioldbufptr
99 # ifndef PL_lex_inwhat
100 # define PL_lex_inwhat PL_Ilex_inwhat
104 #ifndef I_WORKAROUND_REQUIRE_PROPAGATION
105 # define I_WORKAROUND_REQUIRE_PROPAGATION !I_HAS_PERL(5, 10, 1)
108 /* ... Thread safety and multiplicity ...................................... */
110 /* Safe unless stated otherwise in Makefile.PL */
112 # define I_FORKSAFE 1
115 #ifndef I_MULTIPLICITY
116 # if defined(MULTIPLICITY)
117 # define I_MULTIPLICITY 1
119 # define I_MULTIPLICITY 0
123 # ifndef PERL_IMPLICIT_CONTEXT
124 # error MULTIPLICITY builds must set PERL_IMPLICIT_CONTEXT
127 #if I_MULTIPLICITY && !defined(tTHX)
128 # define tTHX PerlInterpreter*
131 #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))
132 # define I_THREADSAFE 1
133 # ifndef MY_CXT_CLONE
134 # define MY_CXT_CLONE \
136 my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \
137 Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \
138 sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
141 # define I_THREADSAFE 0
143 # define dMY_CXT dNOOP
145 # define MY_CXT indirect_globaldata
147 # define START_MY_CXT static my_cxt_t MY_CXT;
149 # define MY_CXT_INIT NOOP
151 # define MY_CXT_CLONE NOOP
155 /* We must use preexistent global mutexes or we will never be able to destroy
157 # if I_HAS_PERL(5, 9, 3)
158 # define I_LOADED_LOCK MUTEX_LOCK(&PL_my_ctx_mutex)
159 # define I_LOADED_UNLOCK MUTEX_UNLOCK(&PL_my_ctx_mutex)
161 # define I_LOADED_LOCK OP_REFCNT_LOCK
162 # define I_LOADED_UNLOCK OP_REFCNT_UNLOCK
165 # define I_LOADED_LOCK NOOP
166 # define I_LOADED_UNLOCK NOOP
169 #if defined(OP_CHECK_MUTEX_LOCK) && defined(OP_CHECK_MUTEX_UNLOCK)
170 # define I_CHECK_LOCK OP_CHECK_MUTEX_LOCK
171 # define I_CHECK_UNLOCK OP_CHECK_MUTEX_UNLOCK
172 #elif I_HAS_PERL(5, 9, 3)
173 # define I_CHECK_LOCK OP_REFCNT_LOCK
174 # define I_CHECK_UNLOCK OP_REFCNT_UNLOCK
176 /* Before perl 5.9.3, indirect_ck_*() calls are already protected by the
177 * I_LOADED mutex, which falls back to the OP_REFCNT mutex. Make sure we don't
179 # define I_CHECK_LOCK NOOP
180 # define I_CHECK_UNLOCK NOOP
183 typedef OP *(*indirect_ck_t)(pTHX_ OP *);
185 #ifdef wrap_op_checker
187 # define indirect_ck_replace(T, NC, OCP) wrap_op_checker((T), (NC), (OCP))
191 static void indirect_ck_replace(pTHX_ OPCODE type, indirect_ck_t new_ck, indirect_ck_t *old_ck_p) {
192 #define indirect_ck_replace(T, NC, OCP) indirect_ck_replace(aTHX_ (T), (NC), (OCP))
195 *old_ck_p = PL_check[type];
196 PL_check[type] = new_ck;
203 static void indirect_ck_restore(pTHX_ OPCODE type, indirect_ck_t *old_ck_p) {
204 #define indirect_ck_restore(T, OCP) indirect_ck_restore(aTHX_ (T), (OCP))
207 PL_check[type] = *old_ck_p;
213 /* --- Helpers ------------------------------------------------------------- */
215 /* ... Check if the module is loaded ....................................... */
217 static I32 indirect_loaded = 0;
221 #define PTABLE_NAME ptable_loaded
222 #define PTABLE_NEED_DELETE 1
223 #define PTABLE_NEED_WALK 0
227 #define ptable_loaded_store(T, K, V) ptable_loaded_store(aPTBLMS_ (T), (K), (V))
228 #define ptable_loaded_delete(T, K) ptable_loaded_delete(aPTBLMS_ (T), (K))
229 #define ptable_loaded_free(T) ptable_loaded_free(aPTBLMS_ (T))
231 static ptable *indirect_loaded_cxts = NULL;
233 static int indirect_is_loaded(pTHX_ void *cxt) {
234 #define indirect_is_loaded(C) indirect_is_loaded(aTHX_ (C))
238 if (indirect_loaded_cxts && ptable_fetch(indirect_loaded_cxts, cxt))
245 static int indirect_set_loaded_locked(pTHX_ void *cxt) {
246 #define indirect_set_loaded_locked(C) indirect_set_loaded_locked(aTHX_ (C))
247 int global_setup = 0;
249 if (indirect_loaded <= 0) {
250 assert(indirect_loaded == 0);
251 assert(!indirect_loaded_cxts);
252 indirect_loaded_cxts = ptable_new();
256 assert(indirect_loaded_cxts);
257 ptable_loaded_store(indirect_loaded_cxts, cxt, cxt);
262 static int indirect_clear_loaded_locked(pTHX_ void *cxt) {
263 #define indirect_clear_loaded_locked(C) indirect_clear_loaded_locked(aTHX_ (C))
264 int global_teardown = 0;
266 if (indirect_loaded > 1) {
267 assert(indirect_loaded_cxts);
268 ptable_loaded_delete(indirect_loaded_cxts, cxt);
270 } else if (indirect_loaded_cxts) {
271 assert(indirect_loaded == 1);
272 ptable_loaded_free(indirect_loaded_cxts);
273 indirect_loaded_cxts = NULL;
278 return global_teardown;
283 #define indirect_is_loaded(C) (indirect_loaded > 0)
284 #define indirect_set_loaded_locked(C) ((indirect_loaded++ <= 0) ? 1 : 0)
285 #define indirect_clear_loaded_locked(C) ((--indirect_loaded <= 0) ? 1 : 0)
289 /* ... Thread-safe hints ................................................... */
291 #if I_WORKAROUND_REQUIRE_PROPAGATION
298 #define I_HINT_STRUCT 1
300 #define I_HINT_CODE(H) ((H)->code)
302 #define I_HINT_FREE(H) { \
303 indirect_hint_t *h = (H); \
304 SvREFCNT_dec(h->code); \
305 PerlMemShared_free(h); \
308 #else /* I_WORKAROUND_REQUIRE_PROPAGATION */
310 typedef SV indirect_hint_t;
312 #define I_HINT_STRUCT 0
314 #define I_HINT_CODE(H) (H)
316 #define I_HINT_FREE(H) SvREFCNT_dec(H);
318 #endif /* !I_WORKAROUND_REQUIRE_PROPAGATION */
322 #define PTABLE_NAME ptable_hints
323 #define PTABLE_VAL_FREE(V) I_HINT_FREE(V)
324 #define PTABLE_NEED_DELETE 0
325 #define PTABLE_NEED_WALK 1
334 #define ptable_hints_store(T, K, V) ptable_hints_store(aTHX_ (T), (K), (V))
335 #define ptable_hints_free(T) ptable_hints_free(aTHX_ (T))
337 #endif /* I_THREADSAFE */
339 /* Define the op->str ptable here because we need to be able to clean it during
348 } indirect_op_info_t;
350 #define PTABLE_NAME ptable
351 #define PTABLE_VAL_FREE(V) if (V) { Safefree(((indirect_op_info_t *) (V))->buf); Safefree(V); }
352 #define PTABLE_NEED_DELETE 1
353 #define PTABLE_NEED_WALK 0
362 #define ptable_store(T, K, V) ptable_store(aTHX_ (T), (K), (V))
363 #define ptable_delete(T, K) ptable_delete(aTHX_ (T), (K))
364 #define ptable_clear(T) ptable_clear(aTHX_ (T))
365 #define ptable_free(T) ptable_free(aTHX_ (T))
367 #define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
371 ptable *tbl; /* It really is a ptable_hints */
384 #if I_HAS_PERL(5, 13, 2)
385 CLONE_PARAMS *params;
389 } indirect_ptable_clone_ud;
391 #if I_HAS_PERL(5, 13, 2)
392 # define indirect_ptable_clone_ud_init(U, T, O) \
394 (U).params = Perl_clone_params_new((O), aTHX)
395 # define indirect_ptable_clone_ud_deinit(U) Perl_clone_params_del((U).params)
396 # define indirect_dup_inc(S, U) SvREFCNT_inc(sv_dup((S), (U)->params))
398 # define indirect_ptable_clone_ud_init(U, T, O) \
400 (U).params.stashes = newAV(); \
401 (U).params.flags = 0; \
402 (U).params.proto_perl = (O)
403 # define indirect_ptable_clone_ud_deinit(U) SvREFCNT_dec((U).params.stashes)
404 # define indirect_dup_inc(S, U) SvREFCNT_inc(sv_dup((S), &((U)->params)))
407 static void indirect_ptable_clone(pTHX_ ptable_ent *ent, void *ud_) {
408 indirect_ptable_clone_ud *ud = ud_;
409 indirect_hint_t *h1 = ent->val;
414 h2 = PerlMemShared_malloc(sizeof *h2);
415 h2->code = indirect_dup_inc(h1->code, ud);
416 #if I_WORKAROUND_REQUIRE_PROPAGATION
417 h2->require_tag = PTR2IV(indirect_dup_inc(INT2PTR(SV *, h1->require_tag), ud));
420 #else /* I_HINT_STRUCT */
422 h2 = indirect_dup_inc(h1, ud);
424 #endif /* !I_HINT_STRUCT */
426 ptable_hints_store(ud->tbl, ent->key, h2);
429 #endif /* I_THREADSAFE */
431 #if I_WORKAROUND_REQUIRE_PROPAGATION
433 static IV indirect_require_tag(pTHX) {
434 #define indirect_require_tag() indirect_require_tag(aTHX)
435 const CV *cv, *outside;
440 /* If for some reason the pragma is operational at run-time, try to discover
441 * the current cv in use. */
444 for (si = PL_curstackinfo; si; si = si->si_prev) {
447 for (cxix = si->si_cxix; cxix >= 0; --cxix) {
448 const PERL_CONTEXT *cx = si->si_cxstack + cxix;
450 switch (CxTYPE(cx)) {
453 /* The propagation workaround is only needed up to 5.10.0 and at that
454 * time format and sub contexts were still identical. And even later the
455 * cv members offsets should have been kept the same. */
457 goto get_enclosing_cv;
459 cv = cx->blk_eval.cv;
460 goto get_enclosing_cv;
471 for (outside = CvOUTSIDE(cv); outside; outside = CvOUTSIDE(cv))
477 #endif /* I_WORKAROUND_REQUIRE_PROPAGATION */
479 static SV *indirect_tag(pTHX_ SV *value) {
480 #define indirect_tag(V) indirect_tag(aTHX_ (V))
488 #endif /* I_THREADSAFE */
492 if (SvTYPE(value) >= SVt_PVCV) {
494 SvREFCNT_inc_simple_void_NN(code);
499 h = PerlMemShared_malloc(sizeof *h);
501 # if I_WORKAROUND_REQUIRE_PROPAGATION
502 h->require_tag = indirect_require_tag();
503 # endif /* I_WORKAROUND_REQUIRE_PROPAGATION */
504 #else /* I_HINT_STRUCT */
506 #endif /* !I_HINT_STRUCT */
509 /* We only need for the key to be an unique tag for looking up the value later
510 * Allocated memory provides convenient unique identifiers, so that's why we
511 * use the hint as the key itself. */
512 ptable_hints_store(MY_CXT.tbl, h, h);
513 #endif /* I_THREADSAFE */
515 return newSViv(PTR2IV(h));
518 static SV *indirect_detag(pTHX_ const SV *hint) {
519 #define indirect_detag(H) indirect_detag(aTHX_ (H))
521 #if I_THREADSAFE || I_WORKAROUND_REQUIRE_PROPAGATION
528 #endif /* I_THREADSAFE */
530 h = INT2PTR(indirect_hint_t *, SvIVX(hint));
532 h = ptable_fetch(MY_CXT.tbl, h);
533 #endif /* I_THREADSAFE */
535 #if I_WORKAROUND_REQUIRE_PROPAGATION
536 if (indirect_require_tag() != h->require_tag)
537 return MY_CXT.global_code;
538 #endif /* I_WORKAROUND_REQUIRE_PROPAGATION */
540 return I_HINT_CODE(h);
543 static VOL U32 indirect_hash = 0;
545 static SV *indirect_hint(pTHX) {
546 #define indirect_hint() indirect_hint(aTHX)
552 #if I_HAS_PERL(5, 10, 0) || defined(PL_parser)
557 #ifdef cop_hints_fetch_pvn
558 hint = cop_hints_fetch_pvn(PL_curcop, __PACKAGE__, __PACKAGE_LEN__,
560 #elif I_HAS_PERL(5, 9, 5)
561 hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
563 __PACKAGE__, __PACKAGE_LEN__,
568 SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__, 0);
574 if (hint && SvIOK(hint)) {
575 return indirect_detag(hint);
578 if (indirect_is_loaded(&MY_CXT))
579 return MY_CXT.global_code;
585 /* ... op -> source position ............................................... */
587 static void indirect_map_store(pTHX_ const OP *o, STRLEN pos, SV *sv, line_t line) {
588 #define indirect_map_store(O, P, N, L) indirect_map_store(aTHX_ (O), (P), (N), (L))
589 indirect_op_info_t *oi;
594 /* No need to check for MY_CXT.map != NULL because this code path is always
595 * guarded by indirect_hint(). */
597 if (!(oi = ptable_fetch(MY_CXT.map, o))) {
598 Newx(oi, 1, indirect_op_info_t);
599 ptable_store(MY_CXT.map, o, oi);
605 s = SvPV_const(sv, len);
611 if (len > oi->size) {
613 Newx(oi->buf, len, char);
616 Copy(s, oi->buf, len, char);
623 static const indirect_op_info_t *indirect_map_fetch(pTHX_ const OP *o) {
624 #define indirect_map_fetch(O) indirect_map_fetch(aTHX_ (O))
627 /* No need to check for MY_CXT.map != NULL because this code path is always
628 * guarded by indirect_hint(). */
630 return ptable_fetch(MY_CXT.map, o);
633 static void indirect_map_delete(pTHX_ const OP *o) {
634 #define indirect_map_delete(O) indirect_map_delete(aTHX_ (O))
637 if (indirect_is_loaded(&MY_CXT) && MY_CXT.map)
638 ptable_delete(MY_CXT.map, o);
641 /* --- Safe version of call_sv() ------------------------------------------- */
643 static I32 indirect_call_sv(pTHX_ SV *sv, I32 flags) {
644 #define indirect_call_sv(S, F) indirect_call_sv(aTHX_ (S), (F))
646 PERL_CONTEXT saved_cx;
647 SV *saved_errsv = NULL;
650 if (IN_PERL_COMPILETIME && PL_errors)
651 sv_catsv(PL_errors, ERRSV);
653 saved_errsv = newSVsv(ERRSV);
657 cxix = (cxstack_ix < cxstack_max) ? (cxstack_ix + 1) : Perl_cxinc(aTHX);
658 /* The last popped context will be reused by call_sv(), but our callers may
659 * still need its previous value. Back it up so that it isn't clobbered. */
660 saved_cx = cxstack[cxix];
662 ret = call_sv(sv, flags | G_EVAL);
664 cxstack[cxix] = saved_cx;
667 /* Discard the old ERRSV, and reuse the variable to temporarily store the
670 sv_setsv(saved_errsv, ERRSV);
672 saved_errsv = newSVsv(ERRSV);
674 /* Immediately flush all errors. */
675 if (IN_PERL_COMPILETIME) {
676 #if I_HAS_PERL(5, 10, 0) || defined(PL_parser)
678 ++PL_parser->error_count;
679 #elif defined(PL_error_count)
685 sv_setsv(ERRSV, PL_errors);
686 SvCUR_set(PL_errors, 0);
689 sv_catsv(ERRSV, saved_errsv);
690 SvREFCNT_dec(saved_errsv);
692 } else if (saved_errsv) {
693 /* If IN_PERL_COMPILETIME && PL_errors, then the old ERRSV has already been
694 * added to PL_errors. Otherwise, just restore it to ERRSV, as if no eval
695 * block has ever been executed. */
696 sv_setsv(ERRSV, saved_errsv);
697 SvREFCNT_dec(saved_errsv);
703 /* --- Check functions ----------------------------------------------------- */
705 static int indirect_find(pTHX_ SV *name_sv, const char *line_bufptr, STRLEN *name_pos) {
706 #define indirect_find(NSV, LBP, NP) indirect_find(aTHX_ (NSV), (LBP), (NP))
707 STRLEN name_len, line_len;
708 const char *name, *name_end;
709 const char *line, *line_end;
712 line = SvPV_const(PL_linestr, line_len);
713 line_end = line + line_len;
715 name = SvPV_const(name_sv, name_len);
716 if (name_len >= 1 && *name == '$') {
719 while (line_bufptr < line_end && *line_bufptr != '$')
721 if (line_bufptr >= line_end)
724 name_end = name + name_len;
728 p = ninstr(p, line_end, name, name_end);
731 if (!isALNUM(p[name_len]))
733 /* p points to a word that has name as prefix, skip the rest of the word */
739 *name_pos = p - line;
744 /* ... ck_const ............................................................ */
746 static OP *(*indirect_old_ck_const)(pTHX_ OP *) = 0;
748 static OP *indirect_ck_const(pTHX_ OP *o) {
749 o = indirect_old_ck_const(aTHX_ o);
751 if (indirect_hint()) {
754 if (SvPOK(sv) && (SvTYPE(sv) >= SVt_PV)) {
757 if (indirect_find(sv, PL_oldbufptr, &pos)) {
760 /* If the constant is equal to the current package name, try to look for
761 * a "__PACKAGE__" coming before what we got. We only need to check this
762 * when we already had a match because __PACKAGE__ can only appear in
763 * direct method calls ("new __PACKAGE__" is a syntax error). */
766 && len == (STRLEN) HvNAMELEN_get(PL_curstash)
767 && memcmp(SvPVX(sv), HvNAME_get(PL_curstash), len) == 0) {
769 SV *pkg = sv_newmortal();
770 sv_setpvn(pkg, "__PACKAGE__", sizeof("__PACKAGE__")-1);
772 if (indirect_find(pkg, PL_oldbufptr, &pos_pkg) && pos_pkg < pos) {
778 indirect_map_store(o, pos, sv, CopLINE(&PL_compiling));
784 indirect_map_delete(o);
788 /* ... ck_rv2sv ............................................................ */
790 static OP *(*indirect_old_ck_rv2sv)(pTHX_ OP *) = 0;
792 static OP *indirect_ck_rv2sv(pTHX_ OP *o) {
793 if (indirect_hint()) {
794 OP *op = cUNOPo->op_first;
796 const char *name = NULL;
798 OPCODE type = (OPCODE) op->op_type;
803 GV *gv = cGVOPx_gv(op);
809 if ((PL_opargs[type] & OA_CLASS_MASK) == OA_SVOP) {
810 SV *nsv = cSVOPx_sv(op);
811 if (SvPOK(nsv) && (SvTYPE(nsv) >= SVt_PV))
812 name = SvPV_const(nsv, len);
818 sv = sv_2mortal(newSVpvn("$", 1));
819 sv_catpvn_nomg(sv, name, len);
820 if (!indirect_find(sv, PL_oldbufptr, &pos)) {
821 /* If it failed, retry without the current stash */
822 const char *stash = HvNAME_get(PL_curstash);
823 STRLEN stashlen = HvNAMELEN_get(PL_curstash);
825 if ((len < stashlen + 2) || strnNE(name, stash, stashlen)
826 || name[stashlen] != ':' || name[stashlen+1] != ':') {
827 /* Failed again ? Try to remove main */
830 if ((len < stashlen + 2) || strnNE(name, stash, stashlen)
831 || name[stashlen] != ':' || name[stashlen+1] != ':')
835 sv_setpvn(sv, "$", 1);
837 sv_catpvn_nomg(sv, name + stashlen, len - stashlen);
838 if (!indirect_find(sv, PL_oldbufptr, &pos))
842 o = indirect_old_ck_rv2sv(aTHX_ o);
844 indirect_map_store(o, pos, sv, CopLINE(&PL_compiling));
849 o = indirect_old_ck_rv2sv(aTHX_ o);
851 indirect_map_delete(o);
855 /* ... ck_padany ........................................................... */
857 static OP *(*indirect_old_ck_padany)(pTHX_ OP *) = 0;
859 static OP *indirect_ck_padany(pTHX_ OP *o) {
860 o = indirect_old_ck_padany(aTHX_ o);
862 if (indirect_hint()) {
864 const char *s = PL_oldbufptr, *t = PL_bufptr - 1;
866 while (s < t && isSPACE(*s)) ++s;
867 if (*s == '$' && ++s <= t) {
868 while (s < t && isSPACE(*s)) ++s;
869 while (s < t && isSPACE(*t)) --t;
870 sv = sv_2mortal(newSVpvn("$", 1));
871 sv_catpvn_nomg(sv, s, t - s + 1);
872 indirect_map_store(o, s - SvPVX_const(PL_linestr),
873 sv, CopLINE(&PL_compiling));
878 indirect_map_delete(o);
882 /* ... ck_scope ............................................................ */
884 static OP *(*indirect_old_ck_scope) (pTHX_ OP *) = 0;
885 static OP *(*indirect_old_ck_lineseq)(pTHX_ OP *) = 0;
887 static OP *indirect_ck_scope(pTHX_ OP *o) {
888 OP *(*old_ck)(pTHX_ OP *) = 0;
890 switch (o->op_type) {
891 case OP_SCOPE: old_ck = indirect_old_ck_scope; break;
892 case OP_LINESEQ: old_ck = indirect_old_ck_lineseq; break;
896 if (indirect_hint()) {
897 indirect_map_store(o, PL_oldbufptr - SvPVX_const(PL_linestr),
898 NULL, CopLINE(&PL_compiling));
902 indirect_map_delete(o);
906 /* We don't need to clean the map entries for leave ops because they can only
907 * be created by mutating from a lineseq. */
909 /* ... ck_method ........................................................... */
911 static OP *(*indirect_old_ck_method)(pTHX_ OP *) = 0;
913 static OP *indirect_ck_method(pTHX_ OP *o) {
914 if (indirect_hint()) {
915 OP *op = cUNOPo->op_first;
917 /* Indirect method call is only possible when the method is a bareword, so
918 * don't trip up on $obj->$meth. */
919 if (op && op->op_type == OP_CONST) {
920 const indirect_op_info_t *oi = indirect_map_fetch(op);
928 sv = sv_2mortal(newSVpvn(oi->buf, oi->len));
930 /* Keep the old line so that we really point to the first line of the
934 o = indirect_old_ck_method(aTHX_ o);
935 /* o may now be a method_named */
937 indirect_map_store(o, pos, sv, line);
943 o = indirect_old_ck_method(aTHX_ o);
945 indirect_map_delete(o);
949 /* ... ck_method_named ..................................................... */
951 /* "use foo/no foo" compiles its call to import/unimport directly to a
952 * method_named op. */
954 static OP *(*indirect_old_ck_method_named)(pTHX_ OP *) = 0;
956 static OP *indirect_ck_method_named(pTHX_ OP *o) {
957 if (indirect_hint()) {
963 if (!SvPOK(sv) || (SvTYPE(sv) < SVt_PV))
965 sv = sv_mortalcopy(sv);
967 if (!indirect_find(sv, PL_oldbufptr, &pos))
969 line = CopLINE(&PL_compiling);
971 o = indirect_old_ck_method_named(aTHX_ o);
973 indirect_map_store(o, pos, sv, line);
978 o = indirect_old_ck_method_named(aTHX_ o);
980 indirect_map_delete(o);
984 /* ... ck_entersub ......................................................... */
986 static OP *(*indirect_old_ck_entersub)(pTHX_ OP *) = 0;
988 static OP *indirect_ck_entersub(pTHX_ OP *o) {
989 SV *code = indirect_hint();
991 o = indirect_old_ck_entersub(aTHX_ o);
994 const indirect_op_info_t *moi, *ooi;
1000 lop = (LISTOP *) oop;
1001 if (!(lop->op_flags & OPf_KIDS))
1003 oop = lop->op_first;
1004 } while (oop->op_type != OP_PUSHMARK);
1005 oop = OpSIBLING(oop);
1011 switch (oop->op_type) {
1022 if (mop->op_type == OP_METHOD)
1023 mop = cUNOPx(mop)->op_first;
1024 else if (mop->op_type != OP_METHOD_NAMED)
1027 moi = indirect_map_fetch(mop);
1031 ooi = indirect_map_fetch(oop);
1035 /* When positions are identical, the method and the object must have the
1036 * same name. But it also means that it is an indirect call, as "foo->foo"
1037 * results in different positions. */
1038 if ( moi->line < ooi->line
1039 || (moi->line == ooi->line && moi->pos <= ooi->pos)) {
1047 file = sv_2mortal(newSVpv(CopFILE(&PL_compiling), 0));
1049 file = sv_mortalcopy(CopFILESV(&PL_compiling));
1054 mPUSHp(ooi->buf, ooi->len);
1055 mPUSHp(moi->buf, moi->len);
1060 indirect_call_sv(code, G_VOID);
1073 /* --- Module setup/teardown ----------------------------------------------- */
1075 static void indirect_teardown(pTHX_ void *interp) {
1080 if (indirect_clear_loaded_locked(&MY_CXT)) {
1081 indirect_ck_restore(OP_CONST, &indirect_old_ck_const);
1082 indirect_ck_restore(OP_RV2SV, &indirect_old_ck_rv2sv);
1083 indirect_ck_restore(OP_PADANY, &indirect_old_ck_padany);
1084 indirect_ck_restore(OP_SCOPE, &indirect_old_ck_scope);
1085 indirect_ck_restore(OP_LINESEQ, &indirect_old_ck_lineseq);
1087 indirect_ck_restore(OP_METHOD, &indirect_old_ck_method);
1088 indirect_ck_restore(OP_METHOD_NAMED, &indirect_old_ck_method_named);
1089 indirect_ck_restore(OP_ENTERSUB, &indirect_old_ck_entersub);
1094 SvREFCNT_dec(MY_CXT.global_code);
1095 MY_CXT.global_code = NULL;
1097 ptable_free(MY_CXT.map);
1101 ptable_hints_free(MY_CXT.tbl);
1108 static void indirect_setup(pTHX) {
1109 #define indirect_setup() indirect_setup(aTHX)
1110 MY_CXT_INIT; /* Takes/release PL_my_ctx_mutex */
1114 if (indirect_set_loaded_locked(&MY_CXT)) {
1115 PERL_HASH(indirect_hash, __PACKAGE__, __PACKAGE_LEN__);
1117 indirect_ck_replace(OP_CONST, indirect_ck_const, &indirect_old_ck_const);
1118 indirect_ck_replace(OP_RV2SV, indirect_ck_rv2sv, &indirect_old_ck_rv2sv);
1119 indirect_ck_replace(OP_PADANY, indirect_ck_padany, &indirect_old_ck_padany);
1120 indirect_ck_replace(OP_SCOPE, indirect_ck_scope, &indirect_old_ck_scope);
1121 indirect_ck_replace(OP_LINESEQ, indirect_ck_scope, &indirect_old_ck_lineseq);
1123 indirect_ck_replace(OP_METHOD, indirect_ck_method,
1124 &indirect_old_ck_method);
1125 indirect_ck_replace(OP_METHOD_NAMED, indirect_ck_method_named,
1126 &indirect_old_ck_method_named);
1127 indirect_ck_replace(OP_ENTERSUB, indirect_ck_entersub,
1128 &indirect_old_ck_entersub);
1136 stash = gv_stashpvn(__PACKAGE__, __PACKAGE_LEN__, 1);
1137 newCONSTSUB(stash, "I_THREADSAFE", newSVuv(I_THREADSAFE));
1138 newCONSTSUB(stash, "I_FORKSAFE", newSVuv(I_FORKSAFE));
1141 MY_CXT.tbl = ptable_new();
1142 MY_CXT.owner = aTHX;
1145 MY_CXT.map = ptable_new();
1146 MY_CXT.global_code = NULL;
1149 call_atexit(indirect_teardown, NULL);
1154 /* --- XS ------------------------------------------------------------------ */
1156 MODULE = indirect PACKAGE = indirect
1172 SV *global_code_dup;
1175 indirect_ptable_clone_ud ud;
1178 indirect_ptable_clone_ud_init(ud, t, MY_CXT.owner);
1179 ptable_walk(MY_CXT.tbl, indirect_ptable_clone, &ud);
1180 global_code_dup = indirect_dup_inc(MY_CXT.global_code, &ud);
1181 indirect_ptable_clone_ud_deinit(ud);
1185 MY_CXT.map = ptable_new();
1187 MY_CXT.owner = aTHX;
1188 MY_CXT.global_code = global_code_dup;
1192 global_setup = indirect_set_loaded_locked(&MY_CXT);
1193 assert(!global_setup);
1199 #endif /* I_THREADSAFE */
1205 RETVAL = indirect_tag(value);
1215 else if (SvROK(code))
1219 SvREFCNT_dec(MY_CXT.global_code);
1220 MY_CXT.global_code = SvREFCNT_inc(code);