1 /* This file is part of the Sub::Op Perl module.
2 * See http://search.cpan.org/dist/Sub-Op/ */
4 #define PERL_NO_GET_CONTEXT
9 #define __PACKAGE__ "Sub::Op"
10 #define __PACKAGE_LEN__ (sizeof(__PACKAGE__)-1)
12 /* --- Compatibility wrappers ---------------------------------------------- */
14 #define SO_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
16 /* ... Thread safety and multiplicity ...................................... */
18 #ifndef SO_MULTIPLICITY
19 # if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
20 # define SO_MULTIPLICITY 1
22 # define SO_MULTIPLICITY 0
25 #if SO_MULTIPLICITY && !defined(tTHX)
26 # define tTHX PerlInterpreter*
29 #if SO_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))
30 # define SO_THREADSAFE 1
32 # define MY_CXT_CLONE \
34 my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \
35 Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \
36 sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
39 # define SO_THREADSAFE 0
41 # define dMY_CXT dNOOP
43 # define MY_CXT indirect_globaldata
45 # define START_MY_CXT STATIC my_cxt_t MY_CXT;
47 # define MY_CXT_INIT NOOP
49 # define MY_CXT_CLONE NOOP
52 /* --- Global data --------------------------------------------------------- */
54 #define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
61 #endif /* SO_THREADSAFE */
68 STATIC SV *so_clone(pTHX_ SV *sv, tTHX owner) {
69 #define so_clone(S, O) so_clone(aTHX_ (S), (O))
74 if (SvTYPE(sv) == SVt_PVHV && HvNAME_get(sv))
77 param.stashes = stashes;
79 param.proto_perl = owner;
81 dupsv = sv_dup(sv, ¶m);
85 SvREFCNT_dec(stashes);
88 return SvREFCNT_inc(dupsv);
91 #endif /* SO_THREADSAFE */
93 #define PTABLE_NAME ptable
94 #define PTABLE_VAL_FREE(V) PerlMemShared_free(V)
98 /* PerlMemShared_free() needs the [ap]PTBLMS_? default values */
99 #define ptable_store(T, K, V) ptable_store(aPTBLMS_ (T), (K), (V))
101 STATIC ptable *so_op_name = NULL;
104 STATIC perl_mutex so_op_name_mutex;
112 /* --- Public API ---------------------------------------------------------- */
116 void sub_op_init(sub_op_config_t *c) {
129 void sub_op_register(pTHX_ const sub_op_config_t *c, U32 flags) {
130 SV *key = newSViv(PTR2IV(c->pp));
132 if (!(flags & SUB_OP_REGISTER_STEAL))
133 c = sub_op_dup(aTHX_ c);
135 if (!PL_custom_op_names)
136 PL_custom_op_names = newHV();
137 (void) hv_store_ent(PL_custom_op_names, key, newSVpv(c->name, c->namelen), 0);
139 if (!PL_custom_op_descs)
140 PL_custom_op_descs = newHV();
141 (void) hv_store_ent(PL_custom_op_descs, key, newSVpv(c->name, c->namelen), 0);
147 (void) hv_store(MY_CXT.map, c->name, c->namelen, newSViv(PTR2IV(c)), 0);
151 sub_op_config_t *sub_op_dup(pTHX_ const sub_op_config_t *orig) {
153 sub_op_config_t *dupe = PerlMemShared_malloc(sizeof *dupe);
157 dupe->name = PerlMemShared_malloc(len + 1);
158 Copy(orig->name, dupe->name, len, char);
159 ((char *) dupe->name)[len] = '\0';
165 len = orig->protolen;
167 dupe->proto = PerlMemShared_malloc(len + 1);
168 Copy(orig->proto, dupe->proto, len, char);
169 ((char *) dupe->proto)[len] = '\0';
173 dupe->protolen = len;
176 dupe->check = orig->check;
177 dupe->ref = orig->ref;
183 void sub_op_free(pTHX_ sub_op_config_t *c) {
184 PerlMemShared_free((char *) c->name);
185 PerlMemShared_free(c);
190 /* --- Private helpers ----------------------------------------------------- */
192 STATIC IV so_hint(pTHX) {
193 #define so_hint() so_hint(aTHX)
196 #if SO_HAS_PERL(5, 9, 5)
197 hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
199 __PACKAGE__, __PACKAGE_LEN__,
204 SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__, 0);
211 return (SvOK(hint) && SvIOK(hint)) ? SvIVX(hint) : 0;
214 STATIC OP *so_find_gvop(OP *o, OP **last_arg_p, OP **rv2cv_p) {
215 OP *ex_list, *last_arg, *rv2cv, *gvop;
217 ex_list = cUNOPo->op_first;
218 /* pushmark when a method call */
219 if (!ex_list || ex_list->op_type != OP_NULL)
222 rv2cv = cUNOPx(ex_list)->op_first;
227 OP *next = rv2cv->op_sibling;
234 if (!(rv2cv->op_flags & OPf_KIDS))
237 gvop = cUNOPx(rv2cv)->op_first;
239 if (gvop && gvop->op_type == OP_GV)
249 *last_arg_p = last_arg;
256 STATIC OP *(*so_old_ck_entersub)(pTHX_ OP *) = 0;
258 STATIC OP *so_ck_entersub(pTHX_ OP *o) {
259 o = CALL_FPTR(so_old_ck_entersub)(aTHX_ o);
262 OP *ex_list, *last_arg, *rv2cv, *gvop;
265 if (o->op_type != OP_ENTERSUB)
267 if (o->op_private & OPpENTERSUB_AMPER) /* hopefully \&foo */
270 gvop = so_find_gvop(o, &last_arg, &rv2cv);
274 gv = cGVOPx_gv(gvop);
279 const char *name = GvNAME(gv);
280 I32 len = GvNAMELEN(gv);
281 const sub_op_config_t *c;
284 svp = hv_fetch(MY_CXT.map, name, len, 0);
288 c = INT2PTR(const sub_op_config_t *, SvIVX(*svp));
290 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder) {
295 o->op_type = OP_CUSTOM;
296 o->op_ppaddr = c->pp;
299 last_arg->op_sibling = NULL;
304 o = CALL_FPTR(c->check)(aTHX_ o, c->ud);
307 so_op_name_t *on = PerlMemShared_malloc(sizeof(*on) + len);
308 Copy(name, &on->buf, len, char);
309 (&on->buf)[len] = '\0';
312 MUTEX_LOCK(&so_op_name_mutex);
313 #endif /* USE_ITHREADS */
314 ptable_store(so_op_name, o, on);
316 MUTEX_UNLOCK(&so_op_name_mutex);
317 #endif /* USE_ITHREADS */
326 STATIC OP *(*so_old_ck_refgen)(pTHX_ OP *) = 0;
328 STATIC OP *so_ck_refgen(pTHX_ OP *o) {
329 o = CALL_FPTR(so_old_ck_refgen)(aTHX_ o);
336 while (kid->op_flags & OPf_KIDS) {
338 kid = cUNOPx(kid)->op_first;
344 for (kid; kid; prev = kid, kid = kid->op_sibling) {
347 const sub_op_config_t *c;
349 if (kid->op_type != OP_RV2CV)
352 gvop = so_find_gvop(kid, NULL, NULL);
356 gv = cGVOPx_gv(gvop);
360 const char *name = GvNAME(gv);
361 I32 len = GvNAMELEN(gv);
364 svp = hv_fetch(MY_CXT.map, name, len, 0);
368 c = INT2PTR(const sub_op_config_t *, SvIVX(*svp));
372 OP *new_kid = CALL_FPTR(c->ref)(aTHX_ kid, c->ud);
374 if (new_kid != kid) {
375 new_kid->op_sibling = kid->op_sibling;
376 new_kid->op_next = new_kid;
378 prev->op_sibling = new_kid;
380 cUNOPx(parent)->op_first = new_kid;
392 STATIC OP *(*so_old_ck_gelem)(pTHX_ OP *) = 0;
394 STATIC OP *so_ck_gelem(pTHX_ OP *o) {
395 o = CALL_FPTR(so_old_ck_entersub)(aTHX_ o);
401 rv2gv = cUNOPo->op_first;
405 gvop = cUNOPx(rv2gv)->op_first;
406 if (!gvop || gvop->op_type != OP_GV)
409 gv = cGVOPx_gv(gvop);
417 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder) {
428 /* --- XS ------------------------------------------------------------------ */
430 MODULE = Sub::Op PACKAGE = Sub::Op
436 so_op_name = ptable_new();
438 MUTEX_INIT(&so_op_name_mutex);
442 MY_CXT.map = newHV();
443 MY_CXT.placeholder = NULL;
446 #endif /* SO_THREADSAFE */
448 so_old_ck_entersub = PL_check[OP_ENTERSUB];
449 PL_check[OP_ENTERSUB] = so_ck_entersub;
450 so_old_ck_refgen = PL_check[OP_REFGEN];
451 PL_check[OP_REFGEN] = so_ck_refgen;
452 so_old_ck_gelem = PL_check[OP_GELEM];
453 PL_check[OP_GELEM] = so_ck_gelem;
468 owner = MY_CXT.owner;
469 map = (HV *) so_clone((SV *) MY_CXT.map, owner);
470 placeholder = (CV *) so_clone((SV *) MY_CXT.placeholder, owner);
475 MY_CXT.placeholder = placeholder;
480 #endif /* SO_THREADSAFE */
488 if (SvTYPE(sv) >= SVt_PVCV) {
490 SvREFCNT_dec(MY_CXT.placeholder);
491 MY_CXT.placeholder = (CV *) SvREFCNT_inc(sv);
505 o = INT2PTR(OP *, SvIV(SvRV(op)));
506 if (!o || o->op_type != OP_CUSTOM)
509 MUTEX_LOCK(&so_op_name_mutex);
510 #endif /* USE_ITHREADS */
511 on = ptable_fetch(so_op_name, o);
513 MUTEX_UNLOCK(&so_op_name_mutex);
514 #endif /* USE_ITHREADS */
517 ST(0) = sv_2mortal(newSVpvn(&on->buf, on->len));
521 _constant_sub(SV *sv)
527 if (SvTYPE(sv) < SVt_PVCV)
529 ST(0) = sv_2mortal(newSVuv(CvCONST(sv)));
533 _get_prototype(SV *name)
537 const sub_op_config_t *c;
540 he = hv_fetch_ent(MY_CXT.map, name, 0, 0);
543 c = INT2PTR(const sub_op_config_t *, SvIVX(HeVAL(he)));
546 ST(0) = sv_2mortal(newSVpvn(c->proto, c->protolen));