Commit | Line | Data |
a0d0e21e |
1 | /* pp_hot.c |
2 | * |
3 | * Copyright (c) 1991-1994, Larry Wall |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
8 | */ |
9 | |
10 | /* |
11 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, |
12 | * shaking the air. |
13 | * |
14 | * Awake! Awake! Fear, Fire, Foes! Awake! |
15 | * Fire, Foes! Awake! |
16 | */ |
17 | |
18 | #include "EXTERN.h" |
19 | #include "perl.h" |
20 | |
21 | /* Hot code. */ |
22 | |
11343788 |
23 | #ifdef USE_THREADS |
24 | static void |
25 | unset_cvowner(cvarg) |
26 | void *cvarg; |
27 | { |
28 | register CV* cv = (CV *) cvarg; |
29 | #ifdef DEBUGGING |
30 | dTHR; |
31 | #endif /* DEBUGGING */ |
32 | |
33 | DEBUG_L((fprintf(stderr, "0x%lx unsetting CvOWNER of 0x%lx:%s\n", |
34 | (unsigned long)thr, (unsigned long)cv, SvPEEK((SV*)cv)))); |
35 | MUTEX_LOCK(CvMUTEXP(cv)); |
36 | assert(CvDEPTH(cv) == 0); |
37 | assert(thr == CvOWNER(cv)); |
38 | CvOWNER(cv) = 0; |
39 | if (CvCONDP(cv)) |
40 | COND_SIGNAL(CvCONDP(cv)); /* next please */ |
41 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
42 | SvREFCNT_dec(cv); |
43 | } |
44 | |
45 | #if 0 |
46 | void |
47 | mutex_unlock(m) |
48 | void *m; |
49 | { |
50 | #ifdef DEBUGGING |
51 | dTHR; |
52 | DEBUG_L((fprintf(stderr, "0x%lx unlocking mutex 0x%lx\n", |
53 | (unsigned long) thr, (unsigned long) m))); |
54 | #endif /* DEBUGGING */ |
55 | MUTEX_UNLOCK((pthread_mutex_t *) m); |
56 | } |
57 | #endif |
58 | #endif /* USE_THREADS */ |
59 | |
a0d0e21e |
60 | PP(pp_const) |
61 | { |
62 | dSP; |
63 | XPUSHs(cSVOP->op_sv); |
64 | RETURN; |
65 | } |
66 | |
67 | PP(pp_nextstate) |
68 | { |
69 | curcop = (COP*)op; |
70 | TAINT_NOT; /* Each statement is presumed innocent */ |
71 | stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp; |
72 | FREETMPS; |
73 | return NORMAL; |
74 | } |
75 | |
76 | PP(pp_gvsv) |
77 | { |
78 | dSP; |
79 | EXTEND(sp,1); |
80 | if (op->op_private & OPpLVAL_INTRO) |
81 | PUSHs(save_scalar(cGVOP->op_gv)); |
82 | else |
83 | PUSHs(GvSV(cGVOP->op_gv)); |
84 | RETURN; |
85 | } |
86 | |
87 | PP(pp_null) |
88 | { |
89 | return NORMAL; |
90 | } |
91 | |
92 | PP(pp_pushmark) |
93 | { |
94 | PUSHMARK(stack_sp); |
95 | return NORMAL; |
96 | } |
97 | |
98 | PP(pp_stringify) |
99 | { |
100 | dSP; dTARGET; |
101 | STRLEN len; |
102 | char *s; |
103 | s = SvPV(TOPs,len); |
104 | sv_setpvn(TARG,s,len); |
105 | SETTARG; |
106 | RETURN; |
107 | } |
108 | |
109 | PP(pp_gv) |
110 | { |
111 | dSP; |
112 | XPUSHs((SV*)cGVOP->op_gv); |
113 | RETURN; |
114 | } |
115 | |
c07a80fd |
116 | PP(pp_gelem) |
117 | { |
118 | GV *gv; |
119 | SV *sv; |
120 | SV *ref; |
121 | char *elem; |
122 | dSP; |
123 | |
124 | sv = POPs; |
125 | elem = SvPV(sv, na); |
126 | gv = (GV*)POPs; |
127 | ref = Nullsv; |
128 | sv = Nullsv; |
129 | switch (elem ? *elem : '\0') |
130 | { |
131 | case 'A': |
132 | if (strEQ(elem, "ARRAY")) |
133 | ref = (SV*)GvAV(gv); |
134 | break; |
135 | case 'C': |
136 | if (strEQ(elem, "CODE")) |
137 | ref = (SV*)GvCV(gv); |
138 | break; |
139 | case 'F': |
140 | if (strEQ(elem, "FILEHANDLE")) |
141 | ref = (SV*)GvIOp(gv); |
142 | break; |
143 | case 'G': |
144 | if (strEQ(elem, "GLOB")) |
145 | ref = (SV*)gv; |
146 | break; |
147 | case 'H': |
148 | if (strEQ(elem, "HASH")) |
149 | ref = (SV*)GvHV(gv); |
150 | break; |
151 | case 'N': |
152 | if (strEQ(elem, "NAME")) |
153 | sv = newSVpv(GvNAME(gv), GvNAMELEN(gv)); |
154 | break; |
155 | case 'P': |
156 | if (strEQ(elem, "PACKAGE")) |
157 | sv = newSVpv(HvNAME(GvSTASH(gv)), 0); |
158 | break; |
159 | case 'S': |
160 | if (strEQ(elem, "SCALAR")) |
161 | ref = GvSV(gv); |
162 | break; |
163 | } |
164 | if (ref) |
165 | sv = newRV(ref); |
166 | if (sv) |
167 | sv_2mortal(sv); |
168 | else |
169 | sv = &sv_undef; |
170 | XPUSHs(sv); |
171 | RETURN; |
172 | } |
173 | |
a0d0e21e |
174 | PP(pp_and) |
175 | { |
176 | dSP; |
177 | if (!SvTRUE(TOPs)) |
178 | RETURN; |
179 | else { |
180 | --SP; |
181 | RETURNOP(cLOGOP->op_other); |
182 | } |
183 | } |
184 | |
185 | PP(pp_sassign) |
186 | { |
187 | dSP; dPOPTOPssrl; |
748a9306 |
188 | MAGIC *mg; |
189 | |
a0d0e21e |
190 | if (op->op_private & OPpASSIGN_BACKWARDS) { |
191 | SV *temp; |
192 | temp = left; left = right; right = temp; |
193 | } |
194 | if (tainting && tainted && (!SvGMAGICAL(left) || !SvSMAGICAL(left) || |
748a9306 |
195 | !((mg = mg_find(left, 't')) && mg->mg_len & 1))) |
196 | { |
a0d0e21e |
197 | TAINT_NOT; |
198 | } |
199 | SvSetSV(right, left); |
200 | SvSETMAGIC(right); |
201 | SETs(right); |
202 | RETURN; |
203 | } |
204 | |
205 | PP(pp_cond_expr) |
206 | { |
207 | dSP; |
208 | if (SvTRUEx(POPs)) |
209 | RETURNOP(cCONDOP->op_true); |
210 | else |
211 | RETURNOP(cCONDOP->op_false); |
212 | } |
213 | |
214 | PP(pp_unstack) |
215 | { |
216 | I32 oldsave; |
217 | TAINT_NOT; /* Each statement is presumed innocent */ |
218 | stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp; |
219 | FREETMPS; |
220 | oldsave = scopestack[scopestack_ix - 1]; |
221 | LEAVE_SCOPE(oldsave); |
222 | return NORMAL; |
223 | } |
224 | |
225 | PP(pp_seq) |
226 | { |
227 | dSP; tryAMAGICbinSET(seq,0); |
228 | { |
229 | dPOPTOPssrl; |
230 | SETs( sv_eq(left, right) ? &sv_yes : &sv_no ); |
231 | RETURN; |
232 | } |
233 | } |
234 | |
235 | PP(pp_concat) |
236 | { |
748a9306 |
237 | dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
238 | { |
239 | dPOPTOPssrl; |
a0d0e21e |
240 | STRLEN len; |
241 | char *s; |
242 | if (TARG != left) { |
243 | s = SvPV(left,len); |
244 | sv_setpvn(TARG,s,len); |
245 | } |
c07a80fd |
246 | else if (SvGMAGICAL(TARG)) |
247 | mg_get(TARG); |
4633a7c4 |
248 | else if (!SvOK(TARG)) { |
249 | s = SvPV_force(TARG, len); |
748a9306 |
250 | sv_setpv(TARG, ""); /* Suppress warning. */ |
4633a7c4 |
251 | } |
a0d0e21e |
252 | s = SvPV(right,len); |
253 | sv_catpvn(TARG,s,len); |
254 | SETTARG; |
255 | RETURN; |
748a9306 |
256 | } |
a0d0e21e |
257 | } |
258 | |
259 | PP(pp_padsv) |
260 | { |
261 | dSP; dTARGET; |
262 | XPUSHs(TARG); |
4633a7c4 |
263 | if (op->op_flags & OPf_MOD) { |
264 | if (op->op_private & OPpLVAL_INTRO) |
265 | SAVECLEARSV(curpad[op->op_targ]); |
02a9e968 |
266 | else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV)) |
267 | provide_ref(op, curpad[op->op_targ]); |
4633a7c4 |
268 | } |
a0d0e21e |
269 | RETURN; |
270 | } |
271 | |
272 | PP(pp_readline) |
273 | { |
274 | last_in_gv = (GV*)(*stack_sp--); |
275 | return do_readline(); |
276 | } |
277 | |
278 | PP(pp_eq) |
279 | { |
280 | dSP; tryAMAGICbinSET(eq,0); |
281 | { |
282 | dPOPnv; |
283 | SETs((TOPn == value) ? &sv_yes : &sv_no); |
284 | RETURN; |
285 | } |
286 | } |
287 | |
288 | PP(pp_preinc) |
289 | { |
290 | dSP; |
748a9306 |
291 | if (SvIOK(TOPs)) { |
292 | ++SvIVX(TOPs); |
293 | SvFLAGS(TOPs) &= ~(SVf_NOK|SVf_POK|SVp_NOK|SVp_POK); |
294 | } |
295 | else |
296 | sv_inc(TOPs); |
a0d0e21e |
297 | SvSETMAGIC(TOPs); |
298 | return NORMAL; |
299 | } |
300 | |
301 | PP(pp_or) |
302 | { |
303 | dSP; |
304 | if (SvTRUE(TOPs)) |
305 | RETURN; |
306 | else { |
307 | --SP; |
308 | RETURNOP(cLOGOP->op_other); |
309 | } |
310 | } |
311 | |
312 | PP(pp_add) |
313 | { |
314 | dSP; dATARGET; tryAMAGICbin(add,opASSIGN); |
315 | { |
316 | dPOPTOPnnrl; |
317 | SETn( left + right ); |
318 | RETURN; |
319 | } |
320 | } |
321 | |
322 | PP(pp_aelemfast) |
323 | { |
324 | dSP; |
325 | AV *av = GvAV((GV*)cSVOP->op_sv); |
326 | SV** svp = av_fetch(av, op->op_private, op->op_flags & OPf_MOD); |
327 | PUSHs(svp ? *svp : &sv_undef); |
328 | RETURN; |
329 | } |
330 | |
331 | PP(pp_join) |
332 | { |
333 | dSP; dMARK; dTARGET; |
334 | MARK++; |
335 | do_join(TARG, *MARK, MARK, SP); |
336 | SP = MARK; |
337 | SETs(TARG); |
338 | RETURN; |
339 | } |
340 | |
341 | PP(pp_pushre) |
342 | { |
343 | dSP; |
344 | XPUSHs((SV*)op); |
345 | RETURN; |
346 | } |
347 | |
348 | /* Oversized hot code. */ |
349 | |
350 | PP(pp_print) |
351 | { |
352 | dSP; dMARK; dORIGMARK; |
353 | GV *gv; |
354 | IO *io; |
355 | register FILE *fp; |
356 | |
357 | if (op->op_flags & OPf_STACKED) |
358 | gv = (GV*)*++MARK; |
359 | else |
360 | gv = defoutgv; |
361 | if (!(io = GvIO(gv))) { |
748a9306 |
362 | if (dowarn) { |
363 | SV* sv = sv_newmortal(); |
364 | gv_fullname(sv,gv); |
365 | warn("Filehandle %s never opened", SvPV(sv,na)); |
366 | } |
367 | |
368 | SETERRNO(EBADF,RMS$_IFI); |
a0d0e21e |
369 | goto just_say_no; |
370 | } |
371 | else if (!(fp = IoOFP(io))) { |
372 | if (dowarn) { |
748a9306 |
373 | SV* sv = sv_newmortal(); |
374 | gv_fullname(sv,gv); |
a0d0e21e |
375 | if (IoIFP(io)) |
748a9306 |
376 | warn("Filehandle %s opened only for input", SvPV(sv,na)); |
a0d0e21e |
377 | else |
748a9306 |
378 | warn("print on closed filehandle %s", SvPV(sv,na)); |
a0d0e21e |
379 | } |
748a9306 |
380 | SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI); |
a0d0e21e |
381 | goto just_say_no; |
382 | } |
383 | else { |
384 | MARK++; |
385 | if (ofslen) { |
386 | while (MARK <= SP) { |
387 | if (!do_print(*MARK, fp)) |
388 | break; |
389 | MARK++; |
390 | if (MARK <= SP) { |
391 | if (fwrite1(ofs, 1, ofslen, fp) == 0 || ferror(fp)) { |
392 | MARK--; |
393 | break; |
394 | } |
395 | } |
396 | } |
397 | } |
398 | else { |
399 | while (MARK <= SP) { |
400 | if (!do_print(*MARK, fp)) |
401 | break; |
402 | MARK++; |
403 | } |
404 | } |
405 | if (MARK <= SP) |
406 | goto just_say_no; |
407 | else { |
408 | if (orslen) |
409 | if (fwrite1(ors, 1, orslen, fp) == 0 || ferror(fp)) |
410 | goto just_say_no; |
411 | |
412 | if (IoFLAGS(io) & IOf_FLUSH) |
a5f75d66 |
413 | if (Fflush(fp) == EOF) |
a0d0e21e |
414 | goto just_say_no; |
415 | } |
416 | } |
417 | SP = ORIGMARK; |
418 | PUSHs(&sv_yes); |
419 | RETURN; |
420 | |
421 | just_say_no: |
422 | SP = ORIGMARK; |
423 | PUSHs(&sv_undef); |
424 | RETURN; |
425 | } |
426 | |
427 | PP(pp_rv2av) |
428 | { |
429 | dSP; dPOPss; |
430 | |
431 | AV *av; |
432 | |
433 | if (SvROK(sv)) { |
434 | wasref: |
435 | av = (AV*)SvRV(sv); |
436 | if (SvTYPE(av) != SVt_PVAV) |
437 | DIE("Not an ARRAY reference"); |
438 | if (op->op_private & OPpLVAL_INTRO) |
439 | av = (AV*)save_svref((SV**)sv); |
440 | if (op->op_flags & OPf_REF) { |
441 | PUSHs((SV*)av); |
442 | RETURN; |
443 | } |
444 | } |
445 | else { |
446 | if (SvTYPE(sv) == SVt_PVAV) { |
447 | av = (AV*)sv; |
448 | if (op->op_flags & OPf_REF) { |
449 | PUSHs((SV*)av); |
450 | RETURN; |
451 | } |
452 | } |
453 | else { |
454 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
455 | char *sym; |
456 | |
a0d0e21e |
457 | if (SvGMAGICAL(sv)) { |
458 | mg_get(sv); |
459 | if (SvROK(sv)) |
460 | goto wasref; |
461 | } |
462 | if (!SvOK(sv)) { |
463 | if (op->op_flags & OPf_REF || |
464 | op->op_private & HINT_STRICT_REFS) |
465 | DIE(no_usym, "an ARRAY"); |
4633a7c4 |
466 | if (GIMME == G_ARRAY) |
467 | RETURN; |
a0d0e21e |
468 | RETPUSHUNDEF; |
469 | } |
748a9306 |
470 | sym = SvPV(sv,na); |
a0d0e21e |
471 | if (op->op_private & HINT_STRICT_REFS) |
748a9306 |
472 | DIE(no_symref, sym, "an ARRAY"); |
473 | sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
a0d0e21e |
474 | } |
475 | av = GvAVn(sv); |
476 | if (op->op_private & OPpLVAL_INTRO) |
477 | av = save_ary(sv); |
478 | if (op->op_flags & OPf_REF) { |
479 | PUSHs((SV*)av); |
480 | RETURN; |
481 | } |
482 | } |
483 | } |
484 | |
485 | if (GIMME == G_ARRAY) { |
486 | I32 maxarg = AvFILL(av) + 1; |
487 | EXTEND(SP, maxarg); |
488 | Copy(AvARRAY(av), SP+1, maxarg, SV*); |
489 | SP += maxarg; |
490 | } |
491 | else { |
492 | dTARGET; |
493 | I32 maxarg = AvFILL(av) + 1; |
494 | PUSHi(maxarg); |
495 | } |
496 | RETURN; |
497 | } |
498 | |
499 | PP(pp_rv2hv) |
500 | { |
501 | |
502 | dSP; dTOPss; |
503 | |
504 | HV *hv; |
505 | |
506 | if (SvROK(sv)) { |
507 | wasref: |
508 | hv = (HV*)SvRV(sv); |
509 | if (SvTYPE(hv) != SVt_PVHV) |
510 | DIE("Not a HASH reference"); |
511 | if (op->op_private & OPpLVAL_INTRO) |
512 | hv = (HV*)save_svref((SV**)sv); |
513 | if (op->op_flags & OPf_REF) { |
514 | SETs((SV*)hv); |
515 | RETURN; |
516 | } |
517 | } |
518 | else { |
519 | if (SvTYPE(sv) == SVt_PVHV) { |
520 | hv = (HV*)sv; |
521 | if (op->op_flags & OPf_REF) { |
522 | SETs((SV*)hv); |
523 | RETURN; |
524 | } |
525 | } |
526 | else { |
527 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
528 | char *sym; |
529 | |
a0d0e21e |
530 | if (SvGMAGICAL(sv)) { |
531 | mg_get(sv); |
532 | if (SvROK(sv)) |
533 | goto wasref; |
534 | } |
535 | if (!SvOK(sv)) { |
536 | if (op->op_flags & OPf_REF || |
537 | op->op_private & HINT_STRICT_REFS) |
538 | DIE(no_usym, "a HASH"); |
4633a7c4 |
539 | if (GIMME == G_ARRAY) { |
540 | SP--; |
541 | RETURN; |
542 | } |
a0d0e21e |
543 | RETSETUNDEF; |
544 | } |
748a9306 |
545 | sym = SvPV(sv,na); |
a0d0e21e |
546 | if (op->op_private & HINT_STRICT_REFS) |
748a9306 |
547 | DIE(no_symref, sym, "a HASH"); |
548 | sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
a0d0e21e |
549 | } |
550 | hv = GvHVn(sv); |
551 | if (op->op_private & OPpLVAL_INTRO) |
552 | hv = save_hash(sv); |
553 | if (op->op_flags & OPf_REF) { |
554 | SETs((SV*)hv); |
555 | RETURN; |
556 | } |
557 | } |
558 | } |
559 | |
560 | if (GIMME == G_ARRAY) { /* array wanted */ |
561 | *stack_sp = (SV*)hv; |
562 | return do_kv(ARGS); |
563 | } |
564 | else { |
565 | dTARGET; |
566 | if (HvFILL(hv)) { |
567 | sprintf(buf, "%d/%d", HvFILL(hv), HvMAX(hv)+1); |
568 | sv_setpv(TARG, buf); |
569 | } |
570 | else |
571 | sv_setiv(TARG, 0); |
572 | SETTARG; |
573 | RETURN; |
574 | } |
575 | } |
576 | |
577 | PP(pp_aassign) |
578 | { |
579 | dSP; |
580 | SV **lastlelem = stack_sp; |
581 | SV **lastrelem = stack_base + POPMARK; |
582 | SV **firstrelem = stack_base + POPMARK + 1; |
583 | SV **firstlelem = lastrelem + 1; |
584 | |
585 | register SV **relem; |
586 | register SV **lelem; |
587 | |
588 | register SV *sv; |
589 | register AV *ary; |
590 | |
591 | HV *hash; |
592 | I32 i; |
593 | int magic; |
594 | |
595 | delaymagic = DM_DELAY; /* catch simultaneous items */ |
596 | |
597 | /* If there's a common identifier on both sides we have to take |
598 | * special care that assigning the identifier on the left doesn't |
599 | * clobber a value on the right that's used later in the list. |
600 | */ |
601 | if (op->op_private & OPpASSIGN_COMMON) { |
602 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
603 | /*SUPPRESS 560*/ |
604 | if (sv = *relem) |
605 | *relem = sv_mortalcopy(sv); |
606 | } |
607 | } |
608 | |
609 | relem = firstrelem; |
610 | lelem = firstlelem; |
611 | ary = Null(AV*); |
612 | hash = Null(HV*); |
613 | while (lelem <= lastlelem) { |
4633a7c4 |
614 | tainted = 0; /* Each item stands on its own, taintwise. */ |
a0d0e21e |
615 | sv = *lelem++; |
616 | switch (SvTYPE(sv)) { |
617 | case SVt_PVAV: |
618 | ary = (AV*)sv; |
748a9306 |
619 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e |
620 | |
621 | av_clear(ary); |
622 | i = 0; |
623 | while (relem <= lastrelem) { /* gobble up all the rest */ |
624 | sv = NEWSV(28,0); |
625 | assert(*relem); |
626 | sv_setsv(sv,*relem); |
627 | *(relem++) = sv; |
628 | (void)av_store(ary,i++,sv); |
629 | if (magic) |
630 | mg_set(sv); |
4633a7c4 |
631 | tainted = 0; |
a0d0e21e |
632 | } |
633 | break; |
634 | case SVt_PVHV: { |
635 | char *tmps; |
636 | SV *tmpstr; |
637 | |
638 | hash = (HV*)sv; |
748a9306 |
639 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e |
640 | hv_clear(hash); |
641 | |
642 | while (relem < lastrelem) { /* gobble up all the rest */ |
643 | STRLEN len; |
4633a7c4 |
644 | if (*relem) |
a0d0e21e |
645 | sv = *(relem++); |
4633a7c4 |
646 | else |
a0d0e21e |
647 | sv = &sv_no, relem++; |
648 | tmps = SvPV(sv, len); |
649 | tmpstr = NEWSV(29,0); |
650 | if (*relem) |
651 | sv_setsv(tmpstr,*relem); /* value */ |
652 | *(relem++) = tmpstr; |
653 | (void)hv_store(hash,tmps,len,tmpstr,0); |
654 | if (magic) |
655 | mg_set(tmpstr); |
4633a7c4 |
656 | tainted = 0; |
8e07c86e |
657 | } |
a0d0e21e |
658 | } |
659 | break; |
660 | default: |
661 | if (SvTHINKFIRST(sv)) { |
662 | if (SvREADONLY(sv) && curcop != &compiling) { |
663 | if (sv != &sv_undef && sv != &sv_yes && sv != &sv_no) |
664 | DIE(no_modify); |
665 | if (relem <= lastrelem) |
666 | relem++; |
667 | break; |
668 | } |
669 | if (SvROK(sv)) |
670 | sv_unref(sv); |
671 | } |
672 | if (relem <= lastrelem) { |
673 | sv_setsv(sv, *relem); |
674 | *(relem++) = sv; |
675 | } |
676 | else |
677 | sv_setsv(sv, &sv_undef); |
678 | SvSETMAGIC(sv); |
679 | break; |
680 | } |
681 | } |
682 | if (delaymagic & ~DM_DELAY) { |
683 | if (delaymagic & DM_UID) { |
684 | #ifdef HAS_SETRESUID |
685 | (void)setresuid(uid,euid,(Uid_t)-1); |
56febc5e |
686 | #else |
687 | # ifdef HAS_SETREUID |
a0d0e21e |
688 | (void)setreuid(uid,euid); |
56febc5e |
689 | # else |
690 | # ifdef HAS_SETRUID |
a0d0e21e |
691 | if ((delaymagic & DM_UID) == DM_RUID) { |
692 | (void)setruid(uid); |
748a9306 |
693 | delaymagic &= ~DM_RUID; |
a0d0e21e |
694 | } |
56febc5e |
695 | # endif /* HAS_SETRUID */ |
696 | # ifdef HAS_SETEUID |
a0d0e21e |
697 | if ((delaymagic & DM_UID) == DM_EUID) { |
698 | (void)seteuid(uid); |
748a9306 |
699 | delaymagic &= ~DM_EUID; |
a0d0e21e |
700 | } |
56febc5e |
701 | # endif /* HAS_SETEUID */ |
a0d0e21e |
702 | if (delaymagic & DM_UID) { |
703 | if (uid != euid) |
704 | DIE("No setreuid available"); |
705 | (void)setuid(uid); |
706 | } |
56febc5e |
707 | # endif /* HAS_SETREUID */ |
708 | #endif /* HAS_SETRESUID */ |
a0d0e21e |
709 | uid = (int)getuid(); |
710 | euid = (int)geteuid(); |
711 | } |
712 | if (delaymagic & DM_GID) { |
713 | #ifdef HAS_SETRESGID |
714 | (void)setresgid(gid,egid,(Gid_t)-1); |
56febc5e |
715 | #else |
716 | # ifdef HAS_SETREGID |
a0d0e21e |
717 | (void)setregid(gid,egid); |
56febc5e |
718 | # else |
719 | # ifdef HAS_SETRGID |
a0d0e21e |
720 | if ((delaymagic & DM_GID) == DM_RGID) { |
721 | (void)setrgid(gid); |
748a9306 |
722 | delaymagic &= ~DM_RGID; |
a0d0e21e |
723 | } |
56febc5e |
724 | # endif /* HAS_SETRGID */ |
725 | # ifdef HAS_SETEGID |
a0d0e21e |
726 | if ((delaymagic & DM_GID) == DM_EGID) { |
727 | (void)setegid(gid); |
748a9306 |
728 | delaymagic &= ~DM_EGID; |
a0d0e21e |
729 | } |
56febc5e |
730 | # endif /* HAS_SETEGID */ |
a0d0e21e |
731 | if (delaymagic & DM_GID) { |
732 | if (gid != egid) |
733 | DIE("No setregid available"); |
734 | (void)setgid(gid); |
735 | } |
56febc5e |
736 | # endif /* HAS_SETREGID */ |
737 | #endif /* HAS_SETRESGID */ |
a0d0e21e |
738 | gid = (int)getgid(); |
739 | egid = (int)getegid(); |
740 | } |
4633a7c4 |
741 | tainting |= (uid && (euid != uid || egid != gid)); |
a0d0e21e |
742 | } |
743 | delaymagic = 0; |
744 | if (GIMME == G_ARRAY) { |
745 | if (ary || hash) |
746 | SP = lastrelem; |
747 | else |
748 | SP = firstrelem + (lastlelem - firstlelem); |
749 | RETURN; |
750 | } |
751 | else { |
4633a7c4 |
752 | dTARGET; |
a0d0e21e |
753 | SP = firstrelem; |
a0d0e21e |
754 | |
4633a7c4 |
755 | SETi(lastrelem - firstrelem + 1); |
756 | RETURN; |
a0d0e21e |
757 | } |
758 | } |
759 | |
760 | PP(pp_match) |
761 | { |
762 | dSP; dTARG; |
763 | register PMOP *pm = cPMOP; |
764 | register char *t; |
765 | register char *s; |
766 | char *strend; |
767 | I32 global; |
768 | I32 safebase; |
769 | char *truebase; |
770 | register REGEXP *rx = pm->op_pmregexp; |
771 | I32 gimme = GIMME; |
772 | STRLEN len; |
748a9306 |
773 | I32 minmatch = 0; |
4633a7c4 |
774 | I32 oldsave = savestack_ix; |
a0d0e21e |
775 | |
776 | if (op->op_flags & OPf_STACKED) |
777 | TARG = POPs; |
778 | else { |
779 | TARG = GvSV(defgv); |
780 | EXTEND(SP,1); |
781 | } |
782 | s = SvPV(TARG, len); |
783 | strend = s + len; |
784 | if (!s) |
785 | DIE("panic: do_match"); |
786 | |
787 | if (pm->op_pmflags & PMf_USED) { |
788 | if (gimme == G_ARRAY) |
789 | RETURN; |
790 | RETPUSHNO; |
791 | } |
792 | |
793 | if (!rx->prelen && curpm) { |
794 | pm = curpm; |
795 | rx = pm->op_pmregexp; |
796 | } |
797 | truebase = t = s; |
798 | if (global = pm->op_pmflags & PMf_GLOBAL) { |
799 | rx->startp[0] = 0; |
800 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
801 | MAGIC* mg = mg_find(TARG, 'g'); |
748a9306 |
802 | if (mg && mg->mg_len >= 0) { |
a0d0e21e |
803 | rx->endp[0] = rx->startp[0] = s + mg->mg_len; |
748a9306 |
804 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
805 | } |
a0d0e21e |
806 | } |
807 | } |
748a9306 |
808 | if (!rx->nparens && !global) |
809 | gimme = G_SCALAR; /* accidental array context? */ |
a0d0e21e |
810 | safebase = (gimme == G_ARRAY) || global; |
811 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
812 | SAVEINT(multiline); |
813 | multiline = pm->op_pmflags & PMf_MULTILINE; |
814 | } |
815 | |
816 | play_it_again: |
817 | if (global && rx->startp[0]) { |
818 | t = s = rx->endp[0]; |
819 | if (s > strend) |
820 | goto nope; |
748a9306 |
821 | minmatch = (s == rx->startp[0]); |
a0d0e21e |
822 | } |
823 | if (pm->op_pmshort) { |
824 | if (pm->op_pmflags & PMf_SCANFIRST) { |
825 | if (SvSCREAM(TARG)) { |
826 | if (screamfirst[BmRARE(pm->op_pmshort)] < 0) |
827 | goto nope; |
828 | else if (!(s = screaminstr(TARG, pm->op_pmshort))) |
829 | goto nope; |
830 | else if (pm->op_pmflags & PMf_ALL) |
831 | goto yup; |
832 | } |
833 | else if (!(s = fbm_instr((unsigned char*)s, |
834 | (unsigned char*)strend, pm->op_pmshort))) |
835 | goto nope; |
836 | else if (pm->op_pmflags & PMf_ALL) |
837 | goto yup; |
838 | if (s && rx->regback >= 0) { |
839 | ++BmUSEFUL(pm->op_pmshort); |
840 | s -= rx->regback; |
841 | if (s < t) |
842 | s = t; |
843 | } |
844 | else |
845 | s = t; |
846 | } |
847 | else if (!multiline) { |
848 | if (*SvPVX(pm->op_pmshort) != *s || |
849 | bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) { |
850 | if (pm->op_pmflags & PMf_FOLD) { |
851 | if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) ) |
852 | goto nope; |
853 | } |
854 | else |
855 | goto nope; |
856 | } |
857 | } |
858 | if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) { |
859 | SvREFCNT_dec(pm->op_pmshort); |
860 | pm->op_pmshort = Nullsv; /* opt is being useless */ |
861 | } |
862 | } |
e50aee73 |
863 | if (pregexec(rx, s, strend, truebase, minmatch, |
a0d0e21e |
864 | SvSCREAM(TARG) ? TARG : Nullsv, |
865 | safebase)) { |
866 | curpm = pm; |
867 | if (pm->op_pmflags & PMf_ONCE) |
868 | pm->op_pmflags |= PMf_USED; |
869 | goto gotcha; |
870 | } |
871 | else |
872 | goto ret_no; |
873 | /*NOTREACHED*/ |
874 | |
875 | gotcha: |
876 | if (gimme == G_ARRAY) { |
877 | I32 iters, i, len; |
878 | |
879 | iters = rx->nparens; |
880 | if (global && !iters) |
881 | i = 1; |
882 | else |
883 | i = 0; |
884 | EXTEND(SP, iters + i); |
885 | for (i = !i; i <= iters; i++) { |
886 | PUSHs(sv_newmortal()); |
887 | /*SUPPRESS 560*/ |
888 | if ((s = rx->startp[i]) && rx->endp[i] ) { |
889 | len = rx->endp[i] - s; |
890 | sv_setpvn(*SP, s, len); |
891 | } |
892 | } |
893 | if (global) { |
894 | truebase = rx->subbeg; |
895 | if (rx->startp[0] && rx->startp[0] == rx->endp[0]) |
896 | ++rx->endp[0]; |
897 | goto play_it_again; |
898 | } |
4633a7c4 |
899 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
900 | RETURN; |
901 | } |
902 | else { |
903 | if (global) { |
904 | MAGIC* mg = 0; |
905 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
906 | mg = mg_find(TARG, 'g'); |
907 | if (!mg) { |
908 | sv_magic(TARG, (SV*)0, 'g', Nullch, 0); |
909 | mg = mg_find(TARG, 'g'); |
910 | } |
748a9306 |
911 | if (rx->startp[0]) { |
912 | mg->mg_len = rx->endp[0] - truebase; |
913 | if (rx->startp[0] == rx->endp[0]) |
914 | mg->mg_flags |= MGf_MINMATCH; |
915 | else |
916 | mg->mg_flags &= ~MGf_MINMATCH; |
917 | } |
918 | else |
919 | mg->mg_len = -1; |
a0d0e21e |
920 | } |
4633a7c4 |
921 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
922 | RETPUSHYES; |
923 | } |
924 | |
925 | yup: |
926 | ++BmUSEFUL(pm->op_pmshort); |
927 | curpm = pm; |
928 | if (pm->op_pmflags & PMf_ONCE) |
929 | pm->op_pmflags |= PMf_USED; |
930 | if (global) { |
931 | rx->subbeg = truebase; |
932 | rx->subend = strend; |
933 | rx->startp[0] = s; |
934 | rx->endp[0] = s + SvCUR(pm->op_pmshort); |
935 | goto gotcha; |
936 | } |
937 | if (sawampersand) { |
938 | char *tmps; |
939 | |
940 | if (rx->subbase) |
941 | Safefree(rx->subbase); |
942 | tmps = rx->subbase = savepvn(t, strend-t); |
943 | rx->subbeg = tmps; |
944 | rx->subend = tmps + (strend-t); |
945 | tmps = rx->startp[0] = tmps + (s - t); |
946 | rx->endp[0] = tmps + SvCUR(pm->op_pmshort); |
947 | } |
4633a7c4 |
948 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
949 | RETPUSHYES; |
950 | |
951 | nope: |
952 | if (pm->op_pmshort) |
953 | ++BmUSEFUL(pm->op_pmshort); |
954 | |
955 | ret_no: |
956 | if (global) { |
957 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
958 | MAGIC* mg = mg_find(TARG, 'g'); |
959 | if (mg) |
960 | mg->mg_len = -1; |
961 | } |
962 | } |
4633a7c4 |
963 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
964 | if (gimme == G_ARRAY) |
965 | RETURN; |
966 | RETPUSHNO; |
967 | } |
968 | |
969 | OP * |
970 | do_readline() |
971 | { |
11343788 |
972 | dTHR; |
a0d0e21e |
973 | dSP; dTARGETSTACKED; |
974 | register SV *sv; |
975 | STRLEN tmplen = 0; |
976 | STRLEN offset; |
977 | FILE *fp; |
978 | register IO *io = GvIO(last_in_gv); |
979 | register I32 type = op->op_type; |
980 | |
981 | fp = Nullfp; |
982 | if (io) { |
983 | fp = IoIFP(io); |
984 | if (!fp) { |
985 | if (IoFLAGS(io) & IOf_ARGV) { |
986 | if (IoFLAGS(io) & IOf_START) { |
987 | IoFLAGS(io) &= ~IOf_START; |
988 | IoLINES(io) = 0; |
989 | if (av_len(GvAVn(last_in_gv)) < 0) { |
990 | SV *tmpstr = newSVpv("-", 1); /* assume stdin */ |
991 | av_push(GvAVn(last_in_gv), tmpstr); |
992 | } |
993 | } |
994 | fp = nextargv(last_in_gv); |
995 | if (!fp) { /* Note: fp != IoIFP(io) */ |
996 | (void)do_close(last_in_gv, FALSE); /* now it does*/ |
997 | IoFLAGS(io) |= IOf_START; |
998 | } |
999 | } |
1000 | else if (type == OP_GLOB) { |
1001 | SV *tmpcmd = NEWSV(55, 0); |
1002 | SV *tmpglob = POPs; |
1003 | ENTER; |
1004 | SAVEFREESV(tmpcmd); |
1005 | #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */ |
1006 | /* since spawning off a process is a real performance hit */ |
1007 | { |
1008 | #include <descrip.h> |
1009 | #include <lib$routines.h> |
1010 | #include <nam.h> |
1011 | #include <rmsdef.h> |
1012 | char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'}; |
1013 | char vmsspec[NAM$C_MAXRSS+1]; |
1014 | char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp; |
1015 | char tmpfnam[L_tmpnam] = "SYS$SCRATCH:"; |
1016 | $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;"); |
1017 | FILE *tmpfp; |
1018 | STRLEN i; |
1019 | struct dsc$descriptor_s wilddsc |
1020 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; |
1021 | struct dsc$descriptor_vs rsdsc |
1022 | = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt}; |
1023 | unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0; |
1024 | |
1025 | /* We could find out if there's an explicit dev/dir or version |
1026 | by peeking into lib$find_file's internal context at |
1027 | ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb |
1028 | but that's unsupported, so I don't want to do it now and |
1029 | have it bite someone in the future. */ |
1030 | strcat(tmpfnam,tmpnam(NULL)); |
1031 | cp = SvPV(tmpglob,i); |
1032 | for (; i; i--) { |
1033 | if (cp[i] == ';') hasver = 1; |
1034 | if (cp[i] == '.') { |
1035 | if (sts) hasver = 1; |
1036 | else sts = 1; |
1037 | } |
1038 | if (cp[i] == '/') { |
1039 | hasdir = isunix = 1; |
1040 | break; |
748a9306 |
1041 | } |
a0d0e21e |
1042 | if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') { |
1043 | hasdir = 1; |
1044 | break; |
1045 | } |
1046 | } |
1047 | if ((tmpfp = fopen(tmpfnam,"w+","fop=dlt")) != NULL) { |
1048 | ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL); |
1049 | if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer); |
1050 | while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt, |
1051 | &dfltdsc,NULL,NULL,NULL))&1)) { |
1052 | end = rstr + (unsigned long int) *rslt; |
1053 | if (!hasver) while (*end != ';') end--; |
1054 | *(end++) = '\n'; *end = '\0'; |
1055 | for (cp = rstr; *cp; cp++) *cp = _tolower(*cp); |
1056 | if (hasdir) { |
271c2963 |
1057 | if (isunix) trim_unixpath(rstr,SvPVX(tmpglob)); |
a0d0e21e |
1058 | begin = rstr; |
1059 | } |
1060 | else { |
1061 | begin = end; |
1062 | while (*(--begin) != ']' && *begin != '>') ; |
1063 | ++begin; |
1064 | } |
1065 | ok = (fputs(begin,tmpfp) != EOF); |
1066 | } |
1067 | if (cxt) (void)lib$find_file_end(&cxt); |
748a9306 |
1068 | if (ok && sts != RMS$_NMF && |
1069 | sts != RMS$_DNF && sts != RMS$_FNF) ok = 0; |
a0d0e21e |
1070 | if (!ok) { |
c07a80fd |
1071 | if (!(sts & 1)) { |
1072 | SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts); |
1073 | } |
1074 | fclose(tmpfp); |
a0d0e21e |
1075 | fp = NULL; |
1076 | } |
1077 | else { |
1078 | rewind(tmpfp); |
1079 | IoTYPE(io) = '<'; |
1080 | IoIFP(io) = fp = tmpfp; |
1081 | } |
1082 | } |
1083 | } |
1084 | #else /* !VMS */ |
1085 | #ifdef DOSISH |
1086 | sv_setpv(tmpcmd, "perlglob "); |
1087 | sv_catsv(tmpcmd, tmpglob); |
1088 | sv_catpv(tmpcmd, " |"); |
1089 | #else |
1090 | #ifdef CSH |
1091 | sv_setpvn(tmpcmd, cshname, cshlen); |
1092 | sv_catpv(tmpcmd, " -cf 'set nonomatch; glob "); |
1093 | sv_catsv(tmpcmd, tmpglob); |
16d20bd9 |
1094 | sv_catpv(tmpcmd, "' 2>/dev/null |"); |
a0d0e21e |
1095 | #else |
1096 | sv_setpv(tmpcmd, "echo "); |
1097 | sv_catsv(tmpcmd, tmpglob); |
1098 | #if 'z' - 'a' == 25 |
1099 | sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|"); |
1100 | #else |
1101 | sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|"); |
1102 | #endif |
1103 | #endif /* !CSH */ |
1104 | #endif /* !MSDOS */ |
c07a80fd |
1105 | (void)do_open(last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd), |
1106 | FALSE, 0, 0, Nullfp); |
a0d0e21e |
1107 | fp = IoIFP(io); |
1108 | #endif /* !VMS */ |
1109 | LEAVE; |
1110 | } |
1111 | } |
1112 | else if (type == OP_GLOB) |
1113 | SP--; |
1114 | } |
1115 | if (!fp) { |
4633a7c4 |
1116 | if (dowarn && io && !(IoFLAGS(io) & IOf_START)) |
a0d0e21e |
1117 | warn("Read on closed filehandle <%s>", GvENAME(last_in_gv)); |
1118 | if (GIMME == G_SCALAR) { |
1119 | (void)SvOK_off(TARG); |
1120 | PUSHTARG; |
1121 | } |
1122 | RETURN; |
1123 | } |
1124 | if (GIMME == G_ARRAY) { |
1125 | sv = sv_2mortal(NEWSV(57, 80)); |
1126 | offset = 0; |
1127 | } |
1128 | else { |
1129 | sv = TARG; |
1130 | (void)SvUPGRADE(sv, SVt_PV); |
1131 | tmplen = SvLEN(sv); /* remember if already alloced */ |
1132 | if (!tmplen) |
1133 | Sv_Grow(sv, 80); /* try short-buffering it */ |
1134 | if (type == OP_RCATLINE) |
1135 | offset = SvCUR(sv); |
1136 | else |
1137 | offset = 0; |
1138 | } |
1139 | for (;;) { |
1140 | if (!sv_gets(sv, fp, offset)) { |
1141 | clearerr(fp); |
1142 | if (IoFLAGS(io) & IOf_ARGV) { |
1143 | fp = nextargv(last_in_gv); |
1144 | if (fp) |
1145 | continue; |
1146 | (void)do_close(last_in_gv, FALSE); |
1147 | IoFLAGS(io) |= IOf_START; |
1148 | } |
1149 | else if (type == OP_GLOB) { |
1150 | (void)do_close(last_in_gv, FALSE); |
1151 | } |
1152 | if (GIMME == G_SCALAR) { |
1153 | (void)SvOK_off(TARG); |
1154 | PUSHTARG; |
1155 | } |
1156 | RETURN; |
1157 | } |
1158 | IoLINES(io)++; |
1159 | XPUSHs(sv); |
1160 | if (tainting) { |
1161 | tainted = TRUE; |
1162 | SvTAINT(sv); /* Anything from the outside world...*/ |
1163 | } |
1164 | if (type == OP_GLOB) { |
1165 | char *tmps; |
1166 | |
c07a80fd |
1167 | if (SvCUR(sv) > 0 && SvCUR(rs) > 0) { |
1168 | tmps = SvEND(sv) - 1; |
1169 | if (*tmps == *SvPVX(rs)) { |
1170 | *tmps = '\0'; |
1171 | SvCUR(sv)--; |
1172 | } |
1173 | } |
a0d0e21e |
1174 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1175 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && |
1176 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) |
1177 | break; |
1178 | if (*tmps && Stat(SvPVX(sv), &statbuf) < 0) { |
1179 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1180 | continue; |
1181 | } |
1182 | } |
1183 | if (GIMME == G_ARRAY) { |
1184 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1185 | SvLEN_set(sv, SvCUR(sv)+1); |
1186 | Renew(SvPVX(sv), SvLEN(sv), char); |
1187 | } |
1188 | sv = sv_2mortal(NEWSV(58, 80)); |
1189 | continue; |
1190 | } |
1191 | else if (!tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
1192 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1193 | if (SvCUR(sv) < 60) |
1194 | SvLEN_set(sv, 80); |
1195 | else |
1196 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ |
1197 | Renew(SvPVX(sv), SvLEN(sv), char); |
1198 | } |
1199 | RETURN; |
1200 | } |
1201 | } |
1202 | |
1203 | PP(pp_enter) |
1204 | { |
1205 | dSP; |
1206 | register CONTEXT *cx; |
1207 | I32 gimme; |
1208 | |
1209 | /* |
1210 | * We don't just use the GIMME macro here because it assumes there's |
1211 | * already a context, which ain't necessarily so at initial startup. |
1212 | */ |
1213 | |
1214 | if (op->op_flags & OPf_KNOW) |
1215 | gimme = op->op_flags & OPf_LIST; |
1216 | else if (cxstack_ix >= 0) |
1217 | gimme = cxstack[cxstack_ix].blk_gimme; |
1218 | else |
1219 | gimme = G_SCALAR; |
1220 | |
1221 | ENTER; |
1222 | |
1223 | SAVETMPS; |
1224 | PUSHBLOCK(cx, CXt_BLOCK, sp); |
1225 | |
1226 | RETURN; |
1227 | } |
1228 | |
1229 | PP(pp_helem) |
1230 | { |
1231 | dSP; |
1232 | SV** svp; |
1233 | SV *keysv = POPs; |
1234 | STRLEN keylen; |
1235 | char *key = SvPV(keysv, keylen); |
1236 | HV *hv = (HV*)POPs; |
1237 | I32 lval = op->op_flags & OPf_MOD; |
1238 | |
1239 | if (SvTYPE(hv) != SVt_PVHV) |
1240 | RETPUSHUNDEF; |
1241 | svp = hv_fetch(hv, key, keylen, lval); |
1242 | if (lval) { |
1243 | if (!svp || *svp == &sv_undef) |
1244 | DIE(no_helem, key); |
1245 | if (op->op_private & OPpLVAL_INTRO) |
1246 | save_svref(svp); |
02a9e968 |
1247 | else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV)) |
1248 | provide_ref(op, *svp); |
a0d0e21e |
1249 | } |
1250 | PUSHs(svp ? *svp : &sv_undef); |
1251 | RETURN; |
1252 | } |
1253 | |
1254 | PP(pp_leave) |
1255 | { |
1256 | dSP; |
1257 | register CONTEXT *cx; |
1258 | register SV **mark; |
1259 | SV **newsp; |
1260 | PMOP *newpm; |
1261 | I32 gimme; |
1262 | |
1263 | if (op->op_flags & OPf_SPECIAL) { |
1264 | cx = &cxstack[cxstack_ix]; |
1265 | cx->blk_oldpm = curpm; /* fake block should preserve $1 et al */ |
1266 | } |
1267 | |
1268 | POPBLOCK(cx,newpm); |
1269 | |
1270 | if (op->op_flags & OPf_KNOW) |
1271 | gimme = op->op_flags & OPf_LIST; |
1272 | else if (cxstack_ix >= 0) |
1273 | gimme = cxstack[cxstack_ix].blk_gimme; |
1274 | else |
1275 | gimme = G_SCALAR; |
1276 | |
1277 | if (gimme == G_SCALAR) { |
1278 | if (op->op_private & OPpLEAVE_VOID) |
1279 | SP = newsp; |
1280 | else { |
1281 | MARK = newsp + 1; |
1282 | if (MARK <= SP) |
1283 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1284 | *MARK = TOPs; |
1285 | else |
1286 | *MARK = sv_mortalcopy(TOPs); |
1287 | else { |
1288 | MEXTEND(mark,0); |
1289 | *MARK = &sv_undef; |
1290 | } |
1291 | SP = MARK; |
1292 | } |
1293 | } |
1294 | else { |
1295 | for (mark = newsp + 1; mark <= SP; mark++) |
1296 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) |
1297 | *mark = sv_mortalcopy(*mark); |
1298 | /* in case LEAVE wipes old return values */ |
1299 | } |
1300 | curpm = newpm; /* Don't pop $1 et al till now */ |
1301 | |
1302 | LEAVE; |
1303 | |
1304 | RETURN; |
1305 | } |
1306 | |
1307 | PP(pp_iter) |
1308 | { |
1309 | dSP; |
1310 | register CONTEXT *cx; |
1311 | SV *sv; |
4633a7c4 |
1312 | AV* av; |
a0d0e21e |
1313 | |
1314 | EXTEND(sp, 1); |
1315 | cx = &cxstack[cxstack_ix]; |
1316 | if (cx->cx_type != CXt_LOOP) |
1317 | DIE("panic: pp_iter"); |
4633a7c4 |
1318 | av = cx->blk_loop.iterary; |
1319 | if (av == stack && cx->blk_loop.iterix >= cx->blk_oldsp) |
1320 | RETPUSHNO; |
a0d0e21e |
1321 | |
4633a7c4 |
1322 | if (cx->blk_loop.iterix >= AvFILL(av)) |
a0d0e21e |
1323 | RETPUSHNO; |
1324 | |
4633a7c4 |
1325 | if (sv = AvARRAY(av)[++cx->blk_loop.iterix]) { |
a0d0e21e |
1326 | SvTEMP_off(sv); |
1327 | *cx->blk_loop.itervar = sv; |
1328 | } |
1329 | else |
1330 | *cx->blk_loop.itervar = &sv_undef; |
1331 | |
1332 | RETPUSHYES; |
1333 | } |
1334 | |
1335 | PP(pp_subst) |
1336 | { |
1337 | dSP; dTARG; |
1338 | register PMOP *pm = cPMOP; |
1339 | PMOP *rpm = pm; |
1340 | register SV *dstr; |
1341 | register char *s; |
1342 | char *strend; |
1343 | register char *m; |
1344 | char *c; |
1345 | register char *d; |
1346 | STRLEN clen; |
1347 | I32 iters = 0; |
1348 | I32 maxiters; |
1349 | register I32 i; |
1350 | bool once; |
1351 | char *orig; |
1352 | I32 safebase; |
1353 | register REGEXP *rx = pm->op_pmregexp; |
1354 | STRLEN len; |
1355 | int force_on_match = 0; |
4633a7c4 |
1356 | I32 oldsave = savestack_ix; |
a0d0e21e |
1357 | |
1358 | if (pm->op_pmflags & PMf_CONST) /* known replacement string? */ |
1359 | dstr = POPs; |
1360 | if (op->op_flags & OPf_STACKED) |
1361 | TARG = POPs; |
1362 | else { |
1363 | TARG = GvSV(defgv); |
1364 | EXTEND(SP,1); |
1365 | } |
1366 | s = SvPV(TARG, len); |
8e07c86e |
1367 | if (!SvPOKp(TARG) || SvREADONLY(TARG) || (SvTYPE(TARG) == SVt_PVGV)) |
a0d0e21e |
1368 | force_on_match = 1; |
1369 | |
1370 | force_it: |
1371 | if (!pm || !s) |
1372 | DIE("panic: do_subst"); |
1373 | |
1374 | strend = s + len; |
1375 | maxiters = (strend - s) + 10; |
1376 | |
1377 | if (!rx->prelen && curpm) { |
1378 | pm = curpm; |
1379 | rx = pm->op_pmregexp; |
1380 | } |
1381 | safebase = ((!rx || !rx->nparens) && !sawampersand); |
1382 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
1383 | SAVEINT(multiline); |
1384 | multiline = pm->op_pmflags & PMf_MULTILINE; |
1385 | } |
1386 | orig = m = s; |
1387 | if (pm->op_pmshort) { |
1388 | if (pm->op_pmflags & PMf_SCANFIRST) { |
1389 | if (SvSCREAM(TARG)) { |
1390 | if (screamfirst[BmRARE(pm->op_pmshort)] < 0) |
1391 | goto nope; |
1392 | else if (!(s = screaminstr(TARG, pm->op_pmshort))) |
1393 | goto nope; |
1394 | } |
1395 | else if (!(s = fbm_instr((unsigned char*)s, (unsigned char*)strend, |
1396 | pm->op_pmshort))) |
1397 | goto nope; |
1398 | if (s && rx->regback >= 0) { |
1399 | ++BmUSEFUL(pm->op_pmshort); |
1400 | s -= rx->regback; |
1401 | if (s < m) |
1402 | s = m; |
1403 | } |
1404 | else |
1405 | s = m; |
1406 | } |
1407 | else if (!multiline) { |
1408 | if (*SvPVX(pm->op_pmshort) != *s || |
1409 | bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) { |
1410 | if (pm->op_pmflags & PMf_FOLD) { |
1411 | if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) ) |
1412 | goto nope; |
1413 | } |
1414 | else |
1415 | goto nope; |
1416 | } |
1417 | } |
1418 | if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) { |
1419 | SvREFCNT_dec(pm->op_pmshort); |
1420 | pm->op_pmshort = Nullsv; /* opt is being useless */ |
1421 | } |
1422 | } |
1423 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
1424 | if (rpm->op_pmflags & PMf_CONST) { /* known replacement string? */ |
1425 | c = SvPV(dstr, clen); |
1426 | if (clen <= rx->minlen) { |
1427 | /* can do inplace substitution */ |
e50aee73 |
1428 | if (pregexec(rx, s, strend, orig, 0, |
a0d0e21e |
1429 | SvSCREAM(TARG) ? TARG : Nullsv, safebase)) { |
1430 | if (force_on_match) { |
1431 | force_on_match = 0; |
1432 | s = SvPV_force(TARG, len); |
1433 | goto force_it; |
1434 | } |
1435 | if (rx->subbase) /* oops, no we can't */ |
1436 | goto long_way; |
1437 | d = s; |
1438 | curpm = pm; |
1439 | SvSCREAM_off(TARG); /* disable possible screamer */ |
1440 | if (once) { |
1441 | m = rx->startp[0]; |
1442 | d = rx->endp[0]; |
1443 | s = orig; |
1444 | if (m - s > strend - d) { /* faster to shorten from end */ |
1445 | if (clen) { |
1446 | Copy(c, m, clen, char); |
1447 | m += clen; |
1448 | } |
1449 | i = strend - d; |
1450 | if (i > 0) { |
1451 | Move(d, m, i, char); |
1452 | m += i; |
1453 | } |
1454 | *m = '\0'; |
1455 | SvCUR_set(TARG, m - s); |
1456 | (void)SvPOK_only(TARG); |
1457 | SvSETMAGIC(TARG); |
1458 | PUSHs(&sv_yes); |
4633a7c4 |
1459 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1460 | RETURN; |
1461 | } |
1462 | /*SUPPRESS 560*/ |
1463 | else if (i = m - s) { /* faster from front */ |
1464 | d -= clen; |
1465 | m = d; |
1466 | sv_chop(TARG, d-i); |
1467 | s += i; |
1468 | while (i--) |
1469 | *--d = *--s; |
1470 | if (clen) |
1471 | Copy(c, m, clen, char); |
1472 | (void)SvPOK_only(TARG); |
1473 | SvSETMAGIC(TARG); |
1474 | PUSHs(&sv_yes); |
4633a7c4 |
1475 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1476 | RETURN; |
1477 | } |
1478 | else if (clen) { |
1479 | d -= clen; |
1480 | sv_chop(TARG, d); |
1481 | Copy(c, d, clen, char); |
1482 | (void)SvPOK_only(TARG); |
1483 | SvSETMAGIC(TARG); |
1484 | PUSHs(&sv_yes); |
4633a7c4 |
1485 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1486 | RETURN; |
1487 | } |
1488 | else { |
1489 | sv_chop(TARG, d); |
1490 | (void)SvPOK_only(TARG); |
1491 | SvSETMAGIC(TARG); |
1492 | PUSHs(&sv_yes); |
4633a7c4 |
1493 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1494 | RETURN; |
1495 | } |
1496 | /* NOTREACHED */ |
1497 | } |
1498 | do { |
1499 | if (iters++ > maxiters) |
1500 | DIE("Substitution loop"); |
1501 | m = rx->startp[0]; |
1502 | /*SUPPRESS 560*/ |
1503 | if (i = m - s) { |
1504 | if (s != d) |
1505 | Move(s, d, i, char); |
1506 | d += i; |
1507 | } |
1508 | if (clen) { |
1509 | Copy(c, d, clen, char); |
1510 | d += clen; |
1511 | } |
1512 | s = rx->endp[0]; |
e50aee73 |
1513 | } while (pregexec(rx, s, strend, orig, s == m, |
a0d0e21e |
1514 | Nullsv, TRUE)); /* (don't match same null twice) */ |
1515 | if (s != d) { |
1516 | i = strend - s; |
1517 | SvCUR_set(TARG, d - SvPVX(TARG) + i); |
1518 | Move(s, d, i+1, char); /* include the Null */ |
1519 | } |
1520 | (void)SvPOK_only(TARG); |
1521 | SvSETMAGIC(TARG); |
1522 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
4633a7c4 |
1523 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1524 | RETURN; |
1525 | } |
1526 | PUSHs(&sv_no); |
4633a7c4 |
1527 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1528 | RETURN; |
1529 | } |
1530 | } |
1531 | else |
1532 | c = Nullch; |
e50aee73 |
1533 | if (pregexec(rx, s, strend, orig, 0, |
a0d0e21e |
1534 | SvSCREAM(TARG) ? TARG : Nullsv, safebase)) { |
1535 | long_way: |
1536 | if (force_on_match) { |
1537 | force_on_match = 0; |
1538 | s = SvPV_force(TARG, len); |
1539 | goto force_it; |
1540 | } |
1541 | dstr = NEWSV(25, sv_len(TARG)); |
1542 | sv_setpvn(dstr, m, s-m); |
1543 | curpm = pm; |
1544 | if (!c) { |
1545 | register CONTEXT *cx; |
1546 | PUSHSUBST(cx); |
1547 | RETURNOP(cPMOP->op_pmreplroot); |
1548 | } |
1549 | do { |
1550 | if (iters++ > maxiters) |
1551 | DIE("Substitution loop"); |
1552 | if (rx->subbase && rx->subbase != orig) { |
1553 | m = s; |
1554 | s = orig; |
1555 | orig = rx->subbase; |
1556 | s = orig + (m - s); |
1557 | strend = s + (strend - m); |
1558 | } |
1559 | m = rx->startp[0]; |
1560 | sv_catpvn(dstr, s, m-s); |
1561 | s = rx->endp[0]; |
1562 | if (clen) |
1563 | sv_catpvn(dstr, c, clen); |
1564 | if (once) |
1565 | break; |
e50aee73 |
1566 | } while (pregexec(rx, s, strend, orig, s == m, Nullsv, |
a0d0e21e |
1567 | safebase)); |
1568 | sv_catpvn(dstr, s, strend - s); |
748a9306 |
1569 | |
4633a7c4 |
1570 | (void)SvOOK_off(TARG); |
cb0b1708 |
1571 | Safefree(SvPVX(TARG)); |
748a9306 |
1572 | SvPVX(TARG) = SvPVX(dstr); |
1573 | SvCUR_set(TARG, SvCUR(dstr)); |
1574 | SvLEN_set(TARG, SvLEN(dstr)); |
1575 | SvPVX(dstr) = 0; |
1576 | sv_free(dstr); |
1577 | |
a0d0e21e |
1578 | (void)SvPOK_only(TARG); |
1579 | SvSETMAGIC(TARG); |
1580 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
4633a7c4 |
1581 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1582 | RETURN; |
1583 | } |
1584 | PUSHs(&sv_no); |
4633a7c4 |
1585 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1586 | RETURN; |
1587 | |
1588 | nope: |
1589 | ++BmUSEFUL(pm->op_pmshort); |
1590 | PUSHs(&sv_no); |
4633a7c4 |
1591 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1592 | RETURN; |
1593 | } |
1594 | |
1595 | PP(pp_grepwhile) |
1596 | { |
1597 | dSP; |
1598 | |
1599 | if (SvTRUEx(POPs)) |
1600 | stack_base[markstack_ptr[-1]++] = stack_base[*markstack_ptr]; |
1601 | ++*markstack_ptr; |
1602 | LEAVE; /* exit inner scope */ |
1603 | |
1604 | /* All done yet? */ |
1605 | if (stack_base + *markstack_ptr > sp) { |
1606 | I32 items; |
1607 | |
1608 | LEAVE; /* exit outer scope */ |
1609 | (void)POPMARK; /* pop src */ |
1610 | items = --*markstack_ptr - markstack_ptr[-1]; |
1611 | (void)POPMARK; /* pop dst */ |
1612 | SP = stack_base + POPMARK; /* pop original mark */ |
1613 | if (GIMME != G_ARRAY) { |
1614 | dTARGET; |
1615 | XPUSHi(items); |
1616 | RETURN; |
1617 | } |
1618 | SP += items; |
1619 | RETURN; |
1620 | } |
1621 | else { |
1622 | SV *src; |
1623 | |
1624 | ENTER; /* enter inner scope */ |
1625 | SAVESPTR(curpm); |
1626 | |
1627 | src = stack_base[*markstack_ptr]; |
1628 | SvTEMP_off(src); |
1629 | GvSV(defgv) = src; |
1630 | |
1631 | RETURNOP(cLOGOP->op_other); |
1632 | } |
1633 | } |
1634 | |
1635 | PP(pp_leavesub) |
1636 | { |
1637 | dSP; |
1638 | SV **mark; |
1639 | SV **newsp; |
1640 | PMOP *newpm; |
1641 | I32 gimme; |
1642 | register CONTEXT *cx; |
1643 | |
1644 | POPBLOCK(cx,newpm); |
1645 | POPSUB(cx); |
1646 | |
1647 | if (gimme == G_SCALAR) { |
1648 | MARK = newsp + 1; |
1649 | if (MARK <= SP) |
1650 | if (SvFLAGS(TOPs) & SVs_TEMP) |
1651 | *MARK = TOPs; |
1652 | else |
1653 | *MARK = sv_mortalcopy(TOPs); |
1654 | else { |
1655 | MEXTEND(mark,0); |
1656 | *MARK = &sv_undef; |
1657 | } |
1658 | SP = MARK; |
1659 | } |
1660 | else { |
1661 | for (mark = newsp + 1; mark <= SP; mark++) |
1662 | if (!(SvFLAGS(*mark) & SVs_TEMP)) |
1663 | *mark = sv_mortalcopy(*mark); |
1664 | /* in case LEAVE wipes old return values */ |
1665 | } |
1666 | |
1667 | if (cx->blk_sub.hasargs) { /* You don't exist; go away. */ |
1668 | AV* av = cx->blk_sub.argarray; |
1669 | |
1670 | av_clear(av); |
1671 | AvREAL_off(av); |
1672 | } |
1673 | curpm = newpm; /* Don't pop $1 et al till now */ |
1674 | |
1675 | LEAVE; |
1676 | PUTBACK; |
1677 | return pop_return(); |
1678 | } |
1679 | |
1680 | PP(pp_entersub) |
1681 | { |
1682 | dSP; dPOPss; |
1683 | GV *gv; |
1684 | HV *stash; |
1685 | register CV *cv; |
1686 | register CONTEXT *cx; |
5d94fbed |
1687 | I32 gimme; |
a0d0e21e |
1688 | |
1689 | if (!sv) |
1690 | DIE("Not a CODE reference"); |
1691 | switch (SvTYPE(sv)) { |
1692 | default: |
1693 | if (!SvROK(sv)) { |
748a9306 |
1694 | char *sym; |
1695 | |
a0d0e21e |
1696 | if (sv == &sv_yes) /* unfound import, ignore */ |
1697 | RETURN; |
1698 | if (!SvOK(sv)) |
1699 | DIE(no_usym, "a subroutine"); |
748a9306 |
1700 | sym = SvPV(sv,na); |
a0d0e21e |
1701 | if (op->op_private & HINT_STRICT_REFS) |
748a9306 |
1702 | DIE(no_symref, sym, "a subroutine"); |
1703 | cv = perl_get_cv(sym, TRUE); |
a0d0e21e |
1704 | break; |
1705 | } |
1706 | cv = (CV*)SvRV(sv); |
1707 | if (SvTYPE(cv) == SVt_PVCV) |
1708 | break; |
1709 | /* FALL THROUGH */ |
1710 | case SVt_PVHV: |
1711 | case SVt_PVAV: |
1712 | DIE("Not a CODE reference"); |
1713 | case SVt_PVCV: |
1714 | cv = (CV*)sv; |
1715 | break; |
1716 | case SVt_PVGV: |
1717 | if (!(cv = GvCV((GV*)sv))) |
1718 | cv = sv_2cv(sv, &stash, &gv, TRUE); |
1719 | break; |
1720 | } |
1721 | |
1722 | ENTER; |
1723 | SAVETMPS; |
1724 | |
1725 | retry: |
1726 | if (!cv) |
1727 | DIE("Not a CODE reference"); |
1728 | |
1729 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
1730 | if (gv = CvGV(cv)) { |
4633a7c4 |
1731 | SV *tmpstr; |
a0d0e21e |
1732 | GV *ngv; |
4633a7c4 |
1733 | if (SvFAKE(cv) && GvCV(gv) != cv) { /* autoloaded stub? */ |
1734 | cv = GvCV(gv); |
1735 | if (SvTYPE(sv) == SVt_PVGV) { |
1736 | SvREFCNT_dec(GvCV((GV*)sv)); |
1737 | GvCV((GV*)sv) = (CV*)SvREFCNT_inc((SV*)cv); |
1738 | } |
1739 | goto retry; |
1740 | } |
1741 | tmpstr = sv_newmortal(); |
a0d0e21e |
1742 | gv_efullname(tmpstr, gv); |
1743 | ngv = gv_fetchmethod(GvESTASH(gv), "AUTOLOAD"); |
1744 | if (ngv && ngv != gv && (cv = GvCV(ngv))) { /* One more chance... */ |
1745 | gv = ngv; |
1746 | sv_setsv(GvSV(CvGV(cv)), tmpstr); /* Set CV's $AUTOLOAD */ |
c07a80fd |
1747 | if (tainting) |
1748 | sv_unmagic(GvSV(CvGV(cv)), 't'); |
a0d0e21e |
1749 | goto retry; |
1750 | } |
1751 | else |
1752 | DIE("Undefined subroutine &%s called",SvPVX(tmpstr)); |
1753 | } |
1754 | DIE("Undefined subroutine called"); |
1755 | } |
1756 | |
4633a7c4 |
1757 | gimme = GIMME; |
c07a80fd |
1758 | if ((op->op_private & OPpENTERSUB_DB) && !CvXSUB(cv)) { |
a0d0e21e |
1759 | sv = GvSV(DBsub); |
1760 | save_item(sv); |
a5f75d66 |
1761 | if (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) { |
1762 | /* GV is potentially non-unique */ |
748a9306 |
1763 | sv_setsv(sv, newRV((SV*)cv)); |
a5f75d66 |
1764 | } |
748a9306 |
1765 | else { |
1766 | gv = CvGV(cv); |
1767 | gv_efullname(sv,gv); |
1768 | } |
a0d0e21e |
1769 | cv = GvCV(DBsub); |
1770 | if (!cv) |
1771 | DIE("No DBsub routine"); |
1772 | } |
1773 | |
11343788 |
1774 | #ifdef USE_THREADS |
1775 | MUTEX_LOCK(CvMUTEXP(cv)); |
1776 | if (!CvCONDP(cv)) { |
1777 | #ifdef DEBUGGING |
1778 | DEBUG_L((fprintf(stderr, "0x%lx entering fast %s\n", |
1779 | (unsigned long)thr, SvPEEK((SV*)cv)))); |
1780 | #endif /* DEBUGGING */ |
1781 | MUTEX_UNLOCK(CvMUTEXP(cv)); /* fast sub wants neither sync nor clone */ |
1782 | } |
1783 | else if (SvFLAGS(cv) & SVpcv_SYNC) { |
1784 | /* |
1785 | * It's a synchronised CV. Wait until it's free unless |
1786 | * we own it already (in which case we're recursing). |
1787 | */ |
1788 | if (CvOWNER(cv) && CvOWNER(cv) != thr) { |
1789 | do { |
1790 | DEBUG_L((fprintf(stderr, "0x%lx wait for 0x%lx to leave %s\n", |
1791 | (unsigned long)thr,(unsigned long)CvOWNER(cv), |
1792 | SvPEEK((SV*)cv)))); |
1793 | COND_WAIT(CvCONDP(cv), CvMUTEXP(cv)); /* yawn */ |
1794 | } while (CvOWNER(cv)); |
1795 | } |
1796 | CvOWNER(cv) = thr; /* Assert ownership */ |
1797 | SvREFCNT_inc(cv); |
1798 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
1799 | if (CvDEPTH(cv) == 0) |
1800 | SAVEDESTRUCTOR(unset_cvowner, (void*) cv); |
1801 | } |
1802 | else { |
1803 | /* |
1804 | * It's an ordinary unsynchronised CV so we must distinguish |
1805 | * three cases. (1) It's ours already (and we're recursing); |
1806 | * (2) it's free (but we may already be using a cached clone); |
1807 | * (3) another thread owns it. Case (1) is easy: we just use it. |
1808 | * Case (2) means we look for a clone--if we have one, use it |
1809 | * otherwise grab ownership of cv. Case (3) means look we for a |
1810 | * clone and have to create one if we don't already have one. |
1811 | * Why look for a clone in case (2) when we could just grab |
1812 | * ownership of cv straight away? Well, we could be recursing, |
1813 | * i.e. we originally tried to enter cv while another thread |
1814 | * owned it (hence we used a clone) but it has been freed up |
1815 | * and we're now recursing into it. It may or may not be "better" |
1816 | * to use the clone but at least CvDEPTH can be trusted. |
1817 | */ |
1818 | if (CvOWNER(cv) == thr) |
1819 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
1820 | else { |
1821 | /* Case (2) or (3) */ |
1822 | SV **svp; |
1823 | |
1824 | /* |
1825 | * XXX Might it be better to release CvMUTEXP(cv) while we |
1826 | * do the hv_fetch? We might find someone has pinched it |
1827 | * when we look again, in which case we would be in case |
1828 | * (3) instead of (2) so we'd have to clone. Would the fact |
1829 | * that we released the mutex more quickly make up for this? |
1830 | */ |
1831 | svp = hv_fetch(cvcache, (char *)cv, sizeof(cv), FALSE); |
1832 | if (svp) { |
1833 | /* We already have a clone to use */ |
1834 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
1835 | cv = *(CV**)svp; |
1836 | DEBUG_L(fprintf(stderr, |
1837 | "entersub: 0x%lx already has clone 0x%lx:%s\n", |
1838 | (unsigned long) thr, (unsigned long) cv, |
1839 | SvPEEK((SV*)cv))); |
1840 | CvOWNER(cv) = thr; |
1841 | SvREFCNT_inc(cv); |
1842 | if (CvDEPTH(cv) == 0) |
1843 | SAVEDESTRUCTOR(unset_cvowner, (void*) cv); |
1844 | } |
1845 | else { |
1846 | /* (2) => grab ownership of cv. (3) => make clone */ |
1847 | if (!CvOWNER(cv)) { |
1848 | CvOWNER(cv) = thr; |
1849 | SvREFCNT_inc(cv); |
1850 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
1851 | DEBUG_L(fprintf(stderr, |
1852 | "entersub: 0x%lx grabbing 0x%lx:%s\n", |
1853 | (unsigned long) thr, (unsigned long) cv, |
1854 | SvPEEK((SV*)cv))); |
1855 | } else { |
1856 | /* Make a new clone. */ |
1857 | CV *clonecv; |
1858 | SvREFCNT_inc(cv); /* don't let it vanish from under us */ |
1859 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
1860 | DEBUG_L((fprintf(stderr, |
1861 | "entersub: 0x%lx cloning 0x%lx:%s\n", |
1862 | (unsigned long) thr, (unsigned long) cv, |
1863 | SvPEEK((SV*)cv)))); |
1864 | /* |
1865 | * We're creating a new clone so there's no race |
1866 | * between the original MUTEX_UNLOCK and the |
1867 | * SvREFCNT_inc since no one will be trying to undef |
1868 | * it out from underneath us. At least, I don't think |
1869 | * there's a race... |
1870 | */ |
1871 | clonecv = cv_clone(cv); |
1872 | SvREFCNT_dec(cv); /* finished with this */ |
1873 | hv_store(cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0); |
1874 | CvOWNER(clonecv) = thr; |
1875 | cv = clonecv; |
1876 | SvREFCNT_inc(cv); |
1877 | } |
1878 | assert(CvDEPTH(cv) == 0); |
1879 | SAVEDESTRUCTOR(unset_cvowner, (void*) cv); |
1880 | } |
1881 | } |
1882 | } |
1883 | #endif /* USE_THREADS */ |
1884 | |
1885 | gimme = GIMME; |
1886 | |
a0d0e21e |
1887 | if (CvXSUB(cv)) { |
1888 | if (CvOLDSTYLE(cv)) { |
ecfc5424 |
1889 | I32 (*fp3)_((int,int,int)); |
a0d0e21e |
1890 | dMARK; |
1891 | register I32 items = SP - MARK; |
1892 | while (sp > mark) { |
1893 | sp[1] = sp[0]; |
1894 | sp--; |
1895 | } |
1896 | stack_sp = mark + 1; |
ecfc5424 |
1897 | fp3 = (I32(*)_((int,int,int)))CvXSUB(cv); |
1898 | items = (*fp3)(CvXSUBANY(cv).any_i32, |
1899 | MARK - stack_base + 1, |
1900 | items); |
a0d0e21e |
1901 | stack_sp = stack_base + items; |
1902 | } |
1903 | else { |
748a9306 |
1904 | I32 markix = TOPMARK; |
1905 | |
a0d0e21e |
1906 | PUTBACK; |
1907 | (void)(*CvXSUB(cv))(cv); |
748a9306 |
1908 | |
1909 | /* Enforce some sanity in scalar context. */ |
5d94fbed |
1910 | if (gimme == G_SCALAR && ++markix != stack_sp - stack_base ) { |
748a9306 |
1911 | if (markix > stack_sp - stack_base) |
1912 | *(stack_base + markix) = &sv_undef; |
1913 | else |
1914 | *(stack_base + markix) = *stack_sp; |
1915 | stack_sp = stack_base + markix; |
1916 | } |
a0d0e21e |
1917 | } |
1918 | LEAVE; |
1919 | return NORMAL; |
1920 | } |
1921 | else { |
1922 | dMARK; |
1923 | register I32 items = SP - MARK; |
1924 | I32 hasargs = (op->op_flags & OPf_STACKED) != 0; |
a0d0e21e |
1925 | AV* padlist = CvPADLIST(cv); |
1926 | SV** svp = AvARRAY(padlist); |
1927 | push_return(op->op_next); |
1928 | PUSHBLOCK(cx, CXt_SUB, MARK); |
1929 | PUSHSUB(cx); |
1930 | CvDEPTH(cv)++; |
1931 | if (CvDEPTH(cv) < 2) |
1932 | (void)SvREFCNT_inc(cv); |
1933 | else { /* save temporaries on recursion? */ |
1934 | if (CvDEPTH(cv) == 100 && dowarn) |
1935 | warn("Deep recursion on subroutine \"%s\"",GvENAME(CvGV(cv))); |
1936 | if (CvDEPTH(cv) > AvFILL(padlist)) { |
1937 | AV *av; |
1938 | AV *newpad = newAV(); |
4aa0a1f7 |
1939 | SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]); |
a0d0e21e |
1940 | I32 ix = AvFILL((AV*)svp[1]); |
1941 | svp = AvARRAY(svp[0]); |
748a9306 |
1942 | for ( ;ix > 0; ix--) { |
a0d0e21e |
1943 | if (svp[ix] != &sv_undef) { |
748a9306 |
1944 | char *name = SvPVX(svp[ix]); |
1945 | if (SvFLAGS(svp[ix]) & SVf_FAKE) { /* outer lexical? */ |
1946 | av_store(newpad, ix, |
4aa0a1f7 |
1947 | SvREFCNT_inc(oldpad[ix]) ); |
748a9306 |
1948 | } |
1949 | else { /* our own lexical */ |
1950 | if (*name == '@') |
1951 | av_store(newpad, ix, sv = (SV*)newAV()); |
1952 | else if (*name == '%') |
1953 | av_store(newpad, ix, sv = (SV*)newHV()); |
1954 | else |
1955 | av_store(newpad, ix, sv = NEWSV(0,0)); |
1956 | SvPADMY_on(sv); |
1957 | } |
a0d0e21e |
1958 | } |
1959 | else { |
748a9306 |
1960 | av_store(newpad, ix, sv = NEWSV(0,0)); |
a0d0e21e |
1961 | SvPADTMP_on(sv); |
1962 | } |
1963 | } |
1964 | av = newAV(); /* will be @_ */ |
1965 | av_extend(av, 0); |
1966 | av_store(newpad, 0, (SV*)av); |
1967 | AvFLAGS(av) = AVf_REIFY; |
1968 | av_store(padlist, CvDEPTH(cv), (SV*)newpad); |
1969 | AvFILL(padlist) = CvDEPTH(cv); |
1970 | svp = AvARRAY(padlist); |
1971 | } |
1972 | } |
1973 | SAVESPTR(curpad); |
1974 | curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]); |
1975 | if (hasargs) { |
1976 | AV* av = (AV*)curpad[0]; |
1977 | SV** ary; |
1978 | |
1979 | if (AvREAL(av)) { |
1980 | av_clear(av); |
1981 | AvREAL_off(av); |
1982 | } |
1983 | cx->blk_sub.savearray = GvAV(defgv); |
1984 | cx->blk_sub.argarray = av; |
1985 | GvAV(defgv) = cx->blk_sub.argarray; |
1986 | ++MARK; |
1987 | |
1988 | if (items > AvMAX(av) + 1) { |
1989 | ary = AvALLOC(av); |
1990 | if (AvARRAY(av) != ary) { |
1991 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); |
1992 | SvPVX(av) = (char*)ary; |
1993 | } |
1994 | if (items > AvMAX(av) + 1) { |
1995 | AvMAX(av) = items - 1; |
1996 | Renew(ary,items,SV*); |
1997 | AvALLOC(av) = ary; |
1998 | SvPVX(av) = (char*)ary; |
1999 | } |
2000 | } |
2001 | Copy(MARK,AvARRAY(av),items,SV*); |
2002 | AvFILL(av) = items - 1; |
2003 | |
2004 | while (items--) { |
2005 | if (*MARK) |
2006 | SvTEMP_off(*MARK); |
2007 | MARK++; |
2008 | } |
2009 | } |
2010 | RETURNOP(CvSTART(cv)); |
2011 | } |
2012 | } |
2013 | |
2014 | PP(pp_aelem) |
2015 | { |
2016 | dSP; |
2017 | SV** svp; |
748a9306 |
2018 | I32 elem = POPi; |
a0d0e21e |
2019 | AV *av = (AV*)POPs; |
2020 | I32 lval = op->op_flags & OPf_MOD; |
2021 | |
748a9306 |
2022 | if (elem > 0) |
2023 | elem -= curcop->cop_arybase; |
a0d0e21e |
2024 | if (SvTYPE(av) != SVt_PVAV) |
2025 | RETPUSHUNDEF; |
2026 | svp = av_fetch(av, elem, lval); |
2027 | if (lval) { |
2028 | if (!svp || *svp == &sv_undef) |
2029 | DIE(no_aelem, elem); |
2030 | if (op->op_private & OPpLVAL_INTRO) |
2031 | save_svref(svp); |
02a9e968 |
2032 | else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV)) |
2033 | provide_ref(op, *svp); |
a0d0e21e |
2034 | } |
2035 | PUSHs(svp ? *svp : &sv_undef); |
2036 | RETURN; |
2037 | } |
2038 | |
02a9e968 |
2039 | void |
11343788 |
2040 | provide_ref(o, sv) |
2041 | OP* o; |
02a9e968 |
2042 | SV* sv; |
2043 | { |
2044 | if (SvGMAGICAL(sv)) |
2045 | mg_get(sv); |
2046 | if (!SvOK(sv)) { |
2047 | if (SvREADONLY(sv)) |
2048 | croak(no_modify); |
2049 | (void)SvUPGRADE(sv, SVt_RV); |
11343788 |
2050 | SvRV(sv) = (o->op_private & OPpDEREF_HV ? |
02a9e968 |
2051 | (SV*)newHV() : (SV*)newAV()); |
2052 | SvROK_on(sv); |
2053 | SvSETMAGIC(sv); |
2054 | } |
2055 | } |
2056 | |
a0d0e21e |
2057 | PP(pp_method) |
2058 | { |
2059 | dSP; |
2060 | SV* sv; |
2061 | SV* ob; |
2062 | GV* gv; |
2063 | SV* nm; |
2064 | |
2065 | nm = TOPs; |
2066 | sv = *(stack_base + TOPMARK + 1); |
2067 | |
2068 | gv = 0; |
16d20bd9 |
2069 | if (SvGMAGICAL(sv)) |
2070 | mg_get(sv); |
a0d0e21e |
2071 | if (SvROK(sv)) |
16d20bd9 |
2072 | ob = (SV*)SvRV(sv); |
a0d0e21e |
2073 | else { |
2074 | GV* iogv; |
2075 | char* packname = 0; |
2076 | |
2077 | if (!SvOK(sv) || |
2078 | !(packname = SvPV(sv, na)) || |
2079 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
2080 | !(ob=(SV*)GvIO(iogv))) |
2081 | { |
2082 | char *name = SvPV(nm, na); |
2083 | HV *stash; |
2084 | if (!packname || !isALPHA(*packname)) |
2085 | DIE("Can't call method \"%s\" without a package or object reference", name); |
2086 | if (!(stash = gv_stashpv(packname, FALSE))) { |
2087 | if (gv_stashpv("UNIVERSAL", FALSE)) |
2088 | stash = gv_stashpv(packname, TRUE); |
2089 | else |
2090 | DIE("Can't call method \"%s\" in empty package \"%s\"", |
2091 | name, packname); |
2092 | } |
2093 | gv = gv_fetchmethod(stash,name); |
2094 | if (!gv) |
2095 | DIE("Can't locate object method \"%s\" via package \"%s\"", |
2096 | name, packname); |
2097 | SETs(gv); |
2098 | RETURN; |
2099 | } |
c07a80fd |
2100 | *(stack_base + TOPMARK + 1) = sv_2mortal(newRV(iogv)); |
a0d0e21e |
2101 | } |
2102 | |
2103 | if (!ob || !SvOBJECT(ob)) { |
2104 | char *name = SvPV(nm, na); |
2105 | DIE("Can't call method \"%s\" on unblessed reference", name); |
2106 | } |
2107 | |
2108 | if (!gv) { /* nothing cached */ |
2109 | char *name = SvPV(nm, na); |
2110 | gv = gv_fetchmethod(SvSTASH(ob),name); |
2111 | if (!gv) |
2112 | DIE("Can't locate object method \"%s\" via package \"%s\"", |
2113 | name, HvNAME(SvSTASH(ob))); |
2114 | } |
2115 | |
2116 | SETs(gv); |
2117 | RETURN; |
2118 | } |
2119 | |