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) {
126 void sub_op_register(pTHX_ const sub_op_config_t *c, U32 flags) {
127 SV *key = newSViv(PTR2IV(c->pp));
129 if (!(flags & SUB_OP_REGISTER_STEAL))
130 c = sub_op_dup(aTHX_ c);
132 if (!PL_custom_op_names)
133 PL_custom_op_names = newHV();
134 (void) hv_store_ent(PL_custom_op_names, key, newSVpv(c->name, c->namelen), 0);
136 if (!PL_custom_op_descs)
137 PL_custom_op_descs = newHV();
138 (void) hv_store_ent(PL_custom_op_descs, key, newSVpv(c->name, c->namelen), 0);
144 (void) hv_store(MY_CXT.map, c->name, c->namelen, newSViv(PTR2IV(c)), 0);
148 sub_op_config_t *sub_op_dup(pTHX_ const sub_op_config_t *orig) {
149 sub_op_config_t *dupe = PerlMemShared_malloc(sizeof *dupe);
151 dupe->namelen = orig->namelen;
152 dupe->name = PerlMemShared_malloc(dupe->namelen);
153 Copy(orig->name, dupe->name, dupe->namelen, char);
156 dupe->check = orig->check;
162 void sub_op_free(pTHX_ sub_op_config_t *c) {
163 PerlMemShared_free((char *) c->name);
164 PerlMemShared_free(c);
169 /* --- Private helpers ----------------------------------------------------- */
171 STATIC IV so_hint(pTHX) {
172 #define so_hint() so_hint(aTHX)
175 #if SO_HAS_PERL(5, 9, 5)
176 hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
178 __PACKAGE__, __PACKAGE_LEN__,
183 SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__, 0);
190 return (SvOK(hint) && SvIOK(hint)) ? SvIVX(hint) : 0;
193 STATIC OP *(*so_old_ck_entersub)(pTHX_ OP *) = 0;
195 STATIC OP *so_ck_entersub(pTHX_ OP *o) {
196 o = CALL_FPTR(so_old_ck_entersub)(aTHX_ o);
199 OP *ex_list, *rv2cv, *gvop, *last_arg = NULL;
202 if (o->op_type != OP_ENTERSUB)
204 if (o->op_private & OPpENTERSUB_AMPER) /* hopefully \&foo */
207 ex_list = cUNOPo->op_first;
208 /* pushmark when a method call */
209 if (!ex_list || ex_list->op_type != OP_NULL)
212 rv2cv = cUNOPx(ex_list)->op_first;
217 OP *next = rv2cv->op_sibling;
224 if (!(rv2cv->op_flags & OPf_KIDS))
227 gvop = cUNOPx(rv2cv)->op_first;
228 if (!gvop || gvop->op_type != OP_GV)
231 gv = cGVOPx_gv(gvop);
236 const char *name = GvNAME(gv);
237 I32 len = GvNAMELEN(gv);
238 const sub_op_config_t *c;
241 svp = hv_fetch(MY_CXT.map, name, len, 0);
245 c = INT2PTR(const sub_op_config_t *, SvIVX(*svp));
247 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder) {
252 o->op_type = OP_CUSTOM;
253 o->op_ppaddr = c->pp;
256 last_arg->op_sibling = NULL;
261 o = CALL_FPTR(c->check)(aTHX_ o, c->ud);
264 so_op_name_t *on = PerlMemShared_malloc(sizeof(*on) + len);
265 Copy(name, &on->buf, len, char);
266 (&on->buf)[len] = '\0';
269 MUTEX_LOCK(&so_op_name_mutex);
270 #endif /* USE_ITHREADS */
271 ptable_store(so_op_name, o, on);
273 MUTEX_UNLOCK(&so_op_name_mutex);
274 #endif /* USE_ITHREADS */
283 STATIC OP *(*so_old_ck_gelem)(pTHX_ OP *) = 0;
285 STATIC OP *so_ck_gelem(pTHX_ OP *o) {
286 o = CALL_FPTR(so_old_ck_entersub)(aTHX_ o);
292 rv2gv = cUNOPo->op_first;
296 gvop = cUNOPx(rv2gv)->op_first;
297 if (!gvop || gvop->op_type != OP_GV)
300 gv = cGVOPx_gv(gvop);
308 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder) {
319 /* --- XS ------------------------------------------------------------------ */
321 MODULE = Sub::Op PACKAGE = Sub::Op
327 so_op_name = ptable_new();
329 MUTEX_INIT(&so_op_name_mutex);
333 MY_CXT.map = newHV();
334 MY_CXT.placeholder = NULL;
337 #endif /* SO_THREADSAFE */
339 so_old_ck_entersub = PL_check[OP_ENTERSUB];
340 PL_check[OP_ENTERSUB] = so_ck_entersub;
341 so_old_ck_gelem = PL_check[OP_GELEM];
342 PL_check[OP_GELEM] = so_ck_gelem;
357 owner = MY_CXT.owner;
358 map = (HV *) so_clone((SV *) MY_CXT.map, owner);
359 placeholder = (CV *) so_clone((SV *) MY_CXT.placeholder, owner);
364 MY_CXT.placeholder = placeholder;
369 #endif /* SO_THREADSAFE */
377 if (SvTYPE(sv) >= SVt_PVCV) {
379 SvREFCNT_dec(MY_CXT.placeholder);
380 MY_CXT.placeholder = (CV *) SvREFCNT_inc(sv);
394 o = INT2PTR(OP *, SvIV(SvRV(op)));
395 if (!o || o->op_type != OP_CUSTOM)
398 MUTEX_LOCK(&so_op_name_mutex);
399 #endif /* USE_ITHREADS */
400 on = ptable_fetch(so_op_name, o);
402 MUTEX_UNLOCK(&so_op_name_mutex);
403 #endif /* USE_ITHREADS */
406 ST(0) = sv_2mortal(newSVpvn(&on->buf, on->len));
410 _constant_sub(SV *sv)
416 if (SvTYPE(sv) < SVt_PVCV)
418 ST(0) = sv_2mortal(newSVuv(CvCONST(sv)));