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 *sub_op_name = NULL;
104 STATIC perl_mutex sub_op_name_mutex;
112 /* --- Public API ---------------------------------------------------------- */
116 void sub_op_register(pTHX_ const sub_op_keyword *k) {
117 SV *key = newSViv(PTR2IV(k->pp));
119 if (!PL_custom_op_names)
120 PL_custom_op_names = newHV();
121 (void) hv_store_ent(PL_custom_op_names, key, newSVpv(k->name, k->len), 0);
123 if (!PL_custom_op_descs)
124 PL_custom_op_descs = newHV();
125 (void) hv_store_ent(PL_custom_op_descs, key, newSVpv(k->name, k->len), 0);
128 SV *check = newSViv(PTR2IV(k->check));
129 sv_magicext(key, check, PERL_MAGIC_ext, NULL, k->ud, 0);
135 (void) hv_store(MY_CXT.map, k->name, k->len, key, 0);
139 /* --- Private helpers ----------------------------------------------------- */
141 #define SO_LINKLIST(O) ((O)->op_next ? (O)->op_next : sub_op_linklist(O))
143 STATIC OP *sub_op_linklist(pTHX_ OP *o) {
144 #define sub_op_linklist(O) sub_op_linklist(aTHX_ (O))
150 /* establish postfix order */
151 first = cUNOPo->op_first;
154 o->op_next = SO_LINKLIST(first);
157 if (kid->op_sibling) {
158 kid->op_next = SO_LINKLIST(kid->op_sibling);
159 kid = kid->op_sibling;
172 STATIC IV sub_op_hint(pTHX) {
173 #define sub_op_hint() sub_op_hint(aTHX)
176 #if SO_HAS_PERL(5, 9, 5)
177 hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
179 __PACKAGE__, __PACKAGE_LEN__,
184 SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__, 0);
191 return (SvOK(hint) && SvIOK(hint)) ? SvIVX(hint) : 0;
194 STATIC OP *(*sub_op_old_ck_entersub)(pTHX_ OP *) = 0;
196 STATIC OP *sub_op_ck_entersub(pTHX_ OP *o) {
197 o = CALL_FPTR(sub_op_old_ck_entersub)(aTHX_ o);
200 OP *ex_list, *rv2cv, *gvop, *last_arg = NULL;
203 if (o->op_type != OP_ENTERSUB)
205 if (o->op_private & OPpENTERSUB_AMPER) /* hopefully \&foo */
208 ex_list = cUNOPo->op_first;
209 /* pushmark when a method call */
210 if (!ex_list || ex_list->op_type != OP_NULL)
213 rv2cv = cUNOPx(ex_list)->op_first;
218 OP *next = rv2cv->op_sibling;
225 if (!(rv2cv->op_flags & OPf_KIDS))
228 gvop = cUNOPx(rv2cv)->op_first;
229 if (!gvop || gvop->op_type != OP_GV)
232 gv = cGVOPx_gv(gvop);
235 HV *stash = GvSTASH(gv);
238 const char *name = GvNAME(gv);
239 I32 len = GvNAMELEN(gv);
242 svp = hv_fetch(MY_CXT.map, name, len, 0);
247 if (!pp_sv || !SvOK(pp_sv))
250 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder) {
253 if (!GvSV(gv) && !GvAV(gv) && !GvHV(gv) && !GvIO(gv) && !GvFORM(gv)) {
254 (void) hv_delete(stash, name, len, G_DISCARD);
258 o->op_type = OP_CUSTOM;
259 o->op_ppaddr = INT2PTR(Perl_ppaddr_t, SvIVX(pp_sv));
262 last_arg->op_sibling = NULL;
267 MAGIC *mg = mg_find(pp_sv, PERL_MAGIC_ext);
269 sub_op_check_t check = INT2PTR(sub_op_check_t, SvIVX(mg->mg_obj));
270 o = CALL_FPTR(check)(aTHX_ o, mg->mg_ptr);
277 sub_op_name_t *on = PerlMemShared_malloc(sizeof(*on) + len);
278 Copy(name, &on->buf, len, char);
279 (&on->buf)[len] = '\0';
282 MUTEX_LOCK(&sub_op_name_mutex);
283 #endif /* USE_ITHREADS */
284 ptable_store(sub_op_name, o, on);
286 MUTEX_UNLOCK(&sub_op_name_mutex);
287 #endif /* USE_ITHREADS */
296 STATIC OP *(*sub_op_old_ck_gelem)(pTHX_ OP *) = 0;
298 STATIC OP *sub_op_ck_gelem(pTHX_ OP *o) {
299 o = CALL_FPTR(sub_op_old_ck_entersub)(aTHX_ o);
305 rv2gv = cUNOPo->op_first;
309 gvop = cUNOPx(rv2gv)->op_first;
310 if (!gvop || gvop->op_type != OP_GV)
313 gv = cGVOPx_gv(gvop);
321 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder) {
324 if (!GvSV(gv) && !GvAV(gv) && !GvHV(gv) && !GvIO(gv) && !GvFORM(gv)) {
325 (void)hv_delete(GvSTASH(gv), GvNAME_get(gv), GvNAMELEN_get(gv), G_DISCARD);
335 /* --- XS ------------------------------------------------------------------ */
337 MODULE = Sub::Op PACKAGE = Sub::Op
343 sub_op_name = ptable_new();
345 MUTEX_INIT(&sub_op_name_mutex);
349 MY_CXT.map = newHV();
350 MY_CXT.placeholder = NULL;
353 #endif /* SO_THREADSAFE */
355 sub_op_old_ck_entersub = PL_check[OP_ENTERSUB];
356 PL_check[OP_ENTERSUB] = sub_op_ck_entersub;
357 sub_op_old_ck_gelem = PL_check[OP_GELEM];
358 PL_check[OP_GELEM] = sub_op_ck_gelem;
373 owner = MY_CXT.owner;
374 map = (HV *) so_clone((SV *) MY_CXT.map, owner);
375 placeholder = (CV *) so_clone((SV *) MY_CXT.placeholder, owner);
380 MY_CXT.placeholder = placeholder;
384 #endif /* SO_THREADSAFE */
392 if (SvTYPE(sv) >= SVt_PVCV) {
394 SvREFCNT_dec(MY_CXT.placeholder);
395 MY_CXT.placeholder = (CV *) SvREFCNT_inc(sv);
409 o = INT2PTR(OP *, SvIV(SvRV(op)));
410 if (!o || o->op_type != OP_CUSTOM)
413 MUTEX_LOCK(&sub_op_name_mutex);
414 #endif /* USE_ITHREADS */
415 on = ptable_fetch(sub_op_name, o);
417 MUTEX_UNLOCK(&sub_op_name_mutex);
418 #endif /* USE_ITHREADS */
421 ST(0) = sv_2mortal(newSVpvn(&on->buf, on->len));