3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 #undef sv_flags /* Convex has this in <signal.h> for sigvec() */
18 =for apidoc AmU||svtype
19 An enum of flags for Perl types. These are found in the file B<sv.h>
20 in the C<svtype> enum. Test these flags with the C<SvTYPE> macro.
22 =for apidoc AmU||SVt_PV
23 Pointer type flag for scalars. See C<svtype>.
25 =for apidoc AmU||SVt_IV
26 Integer type flag for scalars. See C<svtype>.
28 =for apidoc AmU||SVt_NV
29 Double type flag for scalars. See C<svtype>.
31 =for apidoc AmU||SVt_PVMG
32 Type flag for blessed scalars. See C<svtype>.
34 =for apidoc AmU||SVt_PVAV
35 Type flag for arrays. See C<svtype>.
37 =for apidoc AmU||SVt_PVHV
38 Type flag for hashes. See C<svtype>.
40 =for apidoc AmU||SVt_PVCV
41 Type flag for code refs. See C<svtype>.
65 /* Using C's structural equivalence to help emulate C++ inheritance here... */
67 struct STRUCT_SV { /* struct sv { */
68 void* sv_any; /* pointer to something */
69 U32 sv_refcnt; /* how many references to us */
70 U32 sv_flags; /* what we are */
74 XPVGV* sv_any; /* pointer to something */
75 U32 sv_refcnt; /* how many references to us */
76 U32 sv_flags; /* what we are */
80 XPVCV* sv_any; /* pointer to something */
81 U32 sv_refcnt; /* how many references to us */
82 U32 sv_flags; /* what we are */
86 XPVAV* sv_any; /* pointer to something */
87 U32 sv_refcnt; /* how many references to us */
88 U32 sv_flags; /* what we are */
92 XPVHV* sv_any; /* pointer to something */
93 U32 sv_refcnt; /* how many references to us */
94 U32 sv_flags; /* what we are */
98 XPVIO* sv_any; /* pointer to something */
99 U32 sv_refcnt; /* how many references to us */
100 U32 sv_flags; /* what we are */
104 =head1 SV Manipulation Functions
106 =for apidoc Am|U32|SvREFCNT|SV* sv
107 Returns the value of the object's reference count.
109 =for apidoc Am|SV*|SvREFCNT_inc|SV* sv
110 Increments the reference count of the given SV.
112 =for apidoc Am|void|SvREFCNT_dec|SV* sv
113 Decrements the reference count of the given SV.
115 =for apidoc Am|svtype|SvTYPE|SV* sv
116 Returns the type of the SV. See C<svtype>.
118 =for apidoc Am|void|SvUPGRADE|SV* sv|svtype type
119 Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to
120 perform the upgrade if necessary. See C<svtype>.
125 #define SvANY(sv) (sv)->sv_any
126 #define SvFLAGS(sv) (sv)->sv_flags
127 #define SvREFCNT(sv) (sv)->sv_refcnt
129 #ifdef USE_5005THREADS
132 # define ATOMIC_INC(count) __ATOMIC_INCREMENT_LONG(&count)
133 # define ATOMIC_DEC_AND_TEST(res,count) res=(1==__ATOMIC_DECREMENT_LONG(&count))
135 # ifdef EMULATE_ATOMIC_REFCOUNTS
136 # define ATOMIC_INC(count) STMT_START { \
137 MUTEX_LOCK(&PL_svref_mutex); \
139 MUTEX_UNLOCK(&PL_svref_mutex); \
141 # define ATOMIC_DEC_AND_TEST(res,count) STMT_START { \
142 MUTEX_LOCK(&PL_svref_mutex); \
143 res = (--count == 0); \
144 MUTEX_UNLOCK(&PL_svref_mutex); \
147 # define ATOMIC_INC(count) atomic_inc(&count)
148 # define ATOMIC_DEC_AND_TEST(res,count) (res = atomic_dec_and_test(&count))
149 # endif /* EMULATE_ATOMIC_REFCOUNTS */
152 # define ATOMIC_INC(count) (++count)
153 # define ATOMIC_DEC_AND_TEST(res, count) (res = (--count == 0))
154 #endif /* USE_5005THREADS */
156 #if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
157 # define SvREFCNT_inc(sv) \
159 SV *_sv = (SV*)(sv); \
161 ATOMIC_INC(SvREFCNT(_sv)); \
165 # ifdef USE_5005THREADS
166 # if defined(VMS) && defined(__ALPHA)
167 # define SvREFCNT_inc(sv) \
168 (PL_Sv=(SV*)(sv), (PL_Sv && __ATOMIC_INCREMENT_LONG(&(SvREFCNT(PL_Sv)))), (SV *)PL_Sv)
170 # define SvREFCNT_inc(sv) sv_newref((SV*)sv)
173 # define SvREFCNT_inc(sv) \
174 ((PL_Sv=(SV*)(sv)), (PL_Sv && ATOMIC_INC(SvREFCNT(PL_Sv))), (SV*)PL_Sv)
178 #define SvREFCNT_dec(sv) sv_free((SV*)(sv))
180 #define SVTYPEMASK 0xff
181 #define SvTYPE(sv) ((sv)->sv_flags & SVTYPEMASK)
183 #define SvUPGRADE(sv, mt) (SvTYPE(sv) >= mt || sv_upgrade(sv, mt))
185 #define SVs_PADBUSY 0x00000100 /* reserved for tmp or my already */
186 #define SVs_PADTMP 0x00000200 /* in use as tmp */
187 #define SVs_PADMY 0x00000400 /* in use a "my" variable */
188 #define SVs_TEMP 0x00000800 /* string is stealable? */
189 #define SVs_OBJECT 0x00001000 /* is "blessed" */
190 #define SVs_GMG 0x00002000 /* has magical get method */
191 #define SVs_SMG 0x00004000 /* has magical set method */
192 #define SVs_RMG 0x00008000 /* has random magical methods */
194 #define SVf_IOK 0x00010000 /* has valid public integer value */
195 #define SVf_NOK 0x00020000 /* has valid public numeric value */
196 #define SVf_POK 0x00040000 /* has valid public pointer value */
197 #define SVf_ROK 0x00080000 /* has a valid reference pointer */
199 #define SVf_FAKE 0x00100000 /* glob or lexical is just a copy */
200 #define SVf_OOK 0x00200000 /* has valid offset value */
201 #define SVf_BREAK 0x00400000 /* refcnt is artificially low - used
202 * by SV's in final arena cleanup */
203 #define SVf_READONLY 0x00800000 /* may not be modified */
206 #define SVp_IOK 0x01000000 /* has valid non-public integer value */
207 #define SVp_NOK 0x02000000 /* has valid non-public numeric value */
208 #define SVp_POK 0x04000000 /* has valid non-public pointer value */
209 #define SVp_SCREAM 0x08000000 /* has been studied? */
211 #define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded */
213 #define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE)
215 #define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \
216 SVp_IOK|SVp_NOK|SVp_POK)
218 #define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */
220 #define PRIVSHIFT 8 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */
222 /* Some private flags. */
224 /* SVpad_OUR may be set on SVt_PV{NV,MG,GV} types */
225 #define SVpad_OUR 0x80000000 /* pad name is "our" instead of "my" */
226 #define SVpad_TYPED 0x40000000 /* Typed Lexical */
228 #define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */
230 #define SVpfm_COMPILED 0x80000000 /* FORMLINE is compiled */
232 #define SVpbm_VALID 0x80000000
233 #define SVpbm_TAIL 0x40000000
235 #define SVrepl_EVAL 0x40000000 /* Replacement part of s///e */
237 #define SVphv_REHASH 0x10000000 /* HV is recalculating hash values */
238 #define SVphv_SHAREKEYS 0x20000000 /* keys live on shared string table */
239 #define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */
240 #define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */
242 #define SVprv_WEAKREF 0x80000000 /* Weak reference */
245 SV * xrv_rv; /* pointer to another SV */
249 char * xpv_pv; /* pointer to malloced string */
250 STRLEN xpv_cur; /* length of xpv_pv as a C string */
251 STRLEN xpv_len; /* allocated size */
255 char * xpv_pv; /* pointer to malloced string */
256 STRLEN xpv_cur; /* length of xpv_pv as a C string */
257 STRLEN xpv_len; /* allocated size */
258 IV xiv_iv; /* integer value or pv offset */
262 char * xpv_pv; /* pointer to malloced string */
263 STRLEN xpv_cur; /* length of xpv_pv as a C string */
264 STRLEN xpv_len; /* allocated size */
265 UV xuv_uv; /* unsigned value or pv offset */
269 char * xpv_pv; /* pointer to malloced string */
270 STRLEN xpv_cur; /* length of xpv_pv as a C string */
271 STRLEN xpv_len; /* allocated size */
272 IV xiv_iv; /* integer value or pv offset */
273 NV xnv_nv; /* numeric value, if any */
276 /* These structure must match the beginning of struct xpvhv in hv.h. */
278 char * xpv_pv; /* pointer to malloced string */
279 STRLEN xpv_cur; /* length of xpv_pv as a C string */
280 STRLEN xpv_len; /* allocated size */
281 IV xiv_iv; /* integer value or pv offset */
282 NV xnv_nv; /* numeric value, if any */
283 MAGIC* xmg_magic; /* linked list of magicalness */
284 HV* xmg_stash; /* class package */
288 char * xpv_pv; /* pointer to malloced string */
289 STRLEN xpv_cur; /* length of xpv_pv as a C string */
290 STRLEN xpv_len; /* allocated size */
291 IV xiv_iv; /* integer value or pv offset */
292 NV xnv_nv; /* numeric value, if any */
293 MAGIC* xmg_magic; /* linked list of magicalness */
294 HV* xmg_stash; /* class package */
299 char xlv_type; /* k=keys .=pos x=substr v=vec /=join/re
300 * y=alem/helem/iter t=tie T=tied HE */
304 char * xpv_pv; /* pointer to malloced string */
305 STRLEN xpv_cur; /* length of xpv_pv as a C string */
306 STRLEN xpv_len; /* allocated size */
307 IV xiv_iv; /* integer value or pv offset */
308 NV xnv_nv; /* numeric value, if any */
309 MAGIC* xmg_magic; /* linked list of magicalness */
310 HV* xmg_stash; /* class package */
320 char * xpv_pv; /* pointer to malloced string */
321 STRLEN xpv_cur; /* length of xpv_pv as a C string */
322 STRLEN xpv_len; /* allocated size */
323 IV xiv_iv; /* integer value or pv offset */
324 NV xnv_nv; /* numeric value, if any */
325 MAGIC* xmg_magic; /* linked list of magicalness */
326 HV* xmg_stash; /* class package */
328 I32 xbm_useful; /* is this constant pattern being useful? */
329 U16 xbm_previous; /* how many characters in string before rare? */
330 U8 xbm_rare; /* rarest character in string */
333 /* This structure must match XPVCV in cv.h */
335 typedef U16 cv_flags_t;
338 char * xpv_pv; /* pointer to malloced string */
339 STRLEN xpv_cur; /* length of xpv_pv as a C string */
340 STRLEN xpv_len; /* allocated size */
341 IV xiv_iv; /* integer value or pv offset */
342 NV xnv_nv; /* numeric value, if any */
343 MAGIC* xmg_magic; /* linked list of magicalness */
344 HV* xmg_stash; /* class package */
349 void (*xcv_xsub)(pTHX_ CV*);
353 long xcv_depth; /* >= 2 indicates recursive call */
356 #ifdef USE_5005THREADS
357 perl_mutex *xcv_mutexp; /* protects xcv_owner */
358 struct perl_thread *xcv_owner; /* current owner thread */
359 #endif /* USE_5005THREADS */
360 cv_flags_t xcv_flags;
361 U32 xcv_outside_seq; /* the COP sequence (at the point of our
362 * compilation) in the lexically enclosing
368 char * xpv_pv; /* pointer to malloced string */
369 STRLEN xpv_cur; /* length of xpv_pv as a C string */
370 STRLEN xpv_len; /* allocated size */
371 IV xiv_iv; /* integer value or pv offset */
372 NV xnv_nv; /* numeric value, if any */
373 MAGIC* xmg_magic; /* linked list of magicalness */
374 HV* xmg_stash; /* class package */
376 PerlIO * xio_ifp; /* ifp and ofp are normally the same */
377 PerlIO * xio_ofp; /* but sockets need separate streams */
378 /* Cray addresses everything by word boundaries (64 bits) and
379 * code and data pointers cannot be mixed (which is exactly what
380 * Perl_filter_add() tries to do with the dirp), hence the following
381 * union trick (as suggested by Gurusamy Sarathy).
382 * For further information see Geir Johansen's problem report titled
383 [ID 20000612.002] Perl problem on Cray system
384 * The any pointer (known as IoANY()) will also be a good place
385 * to hang any IO disciplines to.
388 DIR * xiou_dirp; /* for opendir, readdir, etc */
389 void * xiou_any; /* for alignment */
391 IV xio_lines; /* $. */
392 IV xio_page; /* $% */
393 IV xio_page_len; /* $= */
394 IV xio_lines_left; /* $- */
395 char * xio_top_name; /* $^ */
396 GV * xio_top_gv; /* $^ */
397 char * xio_fmt_name; /* $~ */
398 GV * xio_fmt_gv; /* $~ */
399 char * xio_bottom_name;/* $^B */
400 GV * xio_bottom_gv; /* $^B */
401 short xio_subprocess; /* -| or |- */
405 #define xio_dirp xio_dirpu.xiou_dirp
406 #define xio_any xio_dirpu.xiou_any
408 #define IOf_ARGV 1 /* this fp iterates over ARGV */
409 #define IOf_START 2 /* check for null ARGV and substitute '-' */
410 #define IOf_FLUSH 4 /* this fp wants a flush after write op */
411 #define IOf_DIDTOP 8 /* just did top of form */
412 #define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */
413 #define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */
414 #define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) */
416 /* The following macros define implementation-independent predicates on SVs. */
419 =for apidoc Am|bool|SvNIOK|SV* sv
420 Returns a boolean indicating whether the SV contains a number, integer or
423 =for apidoc Am|bool|SvNIOKp|SV* sv
424 Returns a boolean indicating whether the SV contains a number, integer or
425 double. Checks the B<private> setting. Use C<SvNIOK>.
427 =for apidoc Am|void|SvNIOK_off|SV* sv
428 Unsets the NV/IV status of an SV.
430 =for apidoc Am|bool|SvOK|SV* sv
431 Returns a boolean indicating whether the value is an SV. It also tells
432 whether the value is defined or not.
434 =for apidoc Am|bool|SvIOKp|SV* sv
435 Returns a boolean indicating whether the SV contains an integer. Checks
436 the B<private> setting. Use C<SvIOK>.
438 =for apidoc Am|bool|SvNOKp|SV* sv
439 Returns a boolean indicating whether the SV contains a double. Checks the
440 B<private> setting. Use C<SvNOK>.
442 =for apidoc Am|bool|SvPOKp|SV* sv
443 Returns a boolean indicating whether the SV contains a character string.
444 Checks the B<private> setting. Use C<SvPOK>.
446 =for apidoc Am|bool|SvIOK|SV* sv
447 Returns a boolean indicating whether the SV contains an integer.
449 =for apidoc Am|void|SvIOK_on|SV* sv
450 Tells an SV that it is an integer.
452 =for apidoc Am|void|SvIOK_off|SV* sv
453 Unsets the IV status of an SV.
455 =for apidoc Am|void|SvIOK_only|SV* sv
456 Tells an SV that it is an integer and disables all other OK bits.
458 =for apidoc Am|void|SvIOK_only_UV|SV* sv
459 Tells and SV that it is an unsigned integer and disables all other OK bits.
461 =for apidoc Am|bool|SvIOK_UV|SV* sv
462 Returns a boolean indicating whether the SV contains an unsigned integer.
464 =for apidoc Am|void|SvUOK|SV* sv
465 Returns a boolean indicating whether the SV contains an unsigned integer.
467 =for apidoc Am|bool|SvIOK_notUV|SV* sv
468 Returns a boolean indicating whether the SV contains a signed integer.
470 =for apidoc Am|bool|SvNOK|SV* sv
471 Returns a boolean indicating whether the SV contains a double.
473 =for apidoc Am|void|SvNOK_on|SV* sv
474 Tells an SV that it is a double.
476 =for apidoc Am|void|SvNOK_off|SV* sv
477 Unsets the NV status of an SV.
479 =for apidoc Am|void|SvNOK_only|SV* sv
480 Tells an SV that it is a double and disables all other OK bits.
482 =for apidoc Am|bool|SvPOK|SV* sv
483 Returns a boolean indicating whether the SV contains a character
486 =for apidoc Am|void|SvPOK_on|SV* sv
487 Tells an SV that it is a string.
489 =for apidoc Am|void|SvPOK_off|SV* sv
490 Unsets the PV status of an SV.
492 =for apidoc Am|void|SvPOK_only|SV* sv
493 Tells an SV that it is a string and disables all other OK bits.
494 Will also turn off the UTF-8 status.
496 =for apidoc Am|bool|SvOOK|SV* sv
497 Returns a boolean indicating whether the SvIVX is a valid offset value for
498 the SvPVX. This hack is used internally to speed up removal of characters
499 from the beginning of a SvPV. When SvOOK is true, then the start of the
500 allocated string buffer is really (SvPVX - SvIVX).
502 =for apidoc Am|bool|SvROK|SV* sv
503 Tests if the SV is an RV.
505 =for apidoc Am|void|SvROK_on|SV* sv
506 Tells an SV that it is an RV.
508 =for apidoc Am|void|SvROK_off|SV* sv
509 Unsets the RV status of an SV.
511 =for apidoc Am|SV*|SvRV|SV* sv
512 Dereferences an RV to return the SV.
514 =for apidoc Am|IV|SvIVX|SV* sv
515 Returns the raw value in the SV's IV slot, without checks or conversions.
516 Only use when you are sure SvIOK is true. See also C<SvIV()>.
518 =for apidoc Am|UV|SvUVX|SV* sv
519 Returns the raw value in the SV's UV slot, without checks or conversions.
520 Only use when you are sure SvIOK is true. See also C<SvUV()>.
522 =for apidoc Am|NV|SvNVX|SV* sv
523 Returns the raw value in the SV's NV slot, without checks or conversions.
524 Only use when you are sure SvNOK is true. See also C<SvNV()>.
526 =for apidoc Am|char*|SvPVX|SV* sv
527 Returns a pointer to the physical string in the SV. The SV must contain a
530 =for apidoc Am|STRLEN|SvCUR|SV* sv
531 Returns the length of the string which is in the SV. See C<SvLEN>.
533 =for apidoc Am|STRLEN|SvLEN|SV* sv
534 Returns the size of the string buffer in the SV, not including any part
535 attributable to C<SvOOK>. See C<SvCUR>.
537 =for apidoc Am|char*|SvEND|SV* sv
538 Returns a pointer to the last character in the string which is in the SV.
539 See C<SvCUR>. Access the character as *(SvEND(sv)).
541 =for apidoc Am|HV*|SvSTASH|SV* sv
542 Returns the stash of the SV.
544 =for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len
545 Set the length of the string which is in the SV. See C<SvCUR>.
550 #define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK))
551 #define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK))
552 #define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \
553 SVp_IOK|SVp_NOK|SVf_IVisUV))
555 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
556 #define assert_not_ROK(sv) ({assert(!SvROK(sv) || !SvRV(sv));}),
558 #define assert_not_ROK(sv)
561 #define SvOK(sv) (SvFLAGS(sv) & SVf_OK)
562 #define SvOK_off(sv) (assert_not_ROK(sv) \
563 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
564 SVf_IVisUV|SVf_UTF8), \
566 #define SvOK_off_exc_UV(sv) (assert_not_ROK(sv) \
567 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
571 #define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK))
572 #define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK)
573 #define SvIOKp_on(sv) ((void)SvOOK_off(sv), SvFLAGS(sv) |= SVp_IOK)
574 #define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK)
575 #define SvNOKp_on(sv) (SvFLAGS(sv) |= SVp_NOK)
576 #define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK)
577 #define SvPOKp_on(sv) (assert_not_ROK(sv) \
578 SvFLAGS(sv) |= SVp_POK)
580 #define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK)
581 #define SvIOK_on(sv) ((void)SvOOK_off(sv), \
582 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
583 #define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV))
584 #define SvIOK_only(sv) (SvOK_off(sv), \
585 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
586 #define SvIOK_only_UV(sv) (SvOK_off_exc_UV(sv), \
587 SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
589 #define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
590 == (SVf_IOK|SVf_IVisUV))
591 #define SvUOK(sv) SvIOK_UV(sv)
592 #define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \
595 #define SvVOK(sv) (SvMAGICAL(sv) && mg_find(sv,'V'))
596 #define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV)
597 #define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV)
598 #define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV)
600 #define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK)
601 #define SvNOK_on(sv) (SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
602 #define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK))
603 #define SvNOK_only(sv) (SvOK_off(sv), \
604 SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
607 =for apidoc Am|bool|SvUTF8|SV* sv
608 Returns a boolean indicating whether the SV contains UTF-8 encoded data.
610 =for apidoc Am|void|SvUTF8_on|SV *sv
611 Turn on the UTF-8 status of an SV (the data is not changed, just the flag).
612 Do not use frivolously.
614 =for apidoc Am|void|SvUTF8_off|SV *sv
615 Unsets the UTF-8 status of an SV.
617 =for apidoc Am|void|SvPOK_only_UTF8|SV* sv
618 Tells an SV that it is a string and disables all other OK bits,
619 and leaves the UTF-8 status as it was.
624 #define SvUTF8(sv) (SvFLAGS(sv) & SVf_UTF8)
625 #define SvUTF8_on(sv) (SvFLAGS(sv) |= (SVf_UTF8))
626 #define SvUTF8_off(sv) (SvFLAGS(sv) &= ~(SVf_UTF8))
628 #define SvPOK(sv) (SvFLAGS(sv) & SVf_POK)
629 #define SvPOK_on(sv) (assert_not_ROK(sv) \
630 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
631 #define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK))
632 #define SvPOK_only(sv) (assert_not_ROK(sv) \
633 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
634 SVf_IVisUV|SVf_UTF8), \
635 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
636 #define SvPOK_only_UTF8(sv) (assert_not_ROK(sv) \
637 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \
639 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
641 #define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK)
642 #define SvOOK_on(sv) ((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
643 #define SvOOK_off(sv) ((void)(SvOOK(sv) && sv_backoff(sv)))
645 #define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE)
646 #define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
647 #define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
649 #define SvROK(sv) (SvFLAGS(sv) & SVf_ROK)
650 #define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK)
651 #define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVf_AMAGIC))
653 #define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG))
654 #define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG))
655 #define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG))
657 #define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG)
658 #define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG)
659 #define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG)
661 #define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG)
662 #define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG)
663 #define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG)
665 #define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG)
666 #define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG)
667 #define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG)
669 #define SvAMAGIC(sv) (SvFLAGS(sv) & SVf_AMAGIC)
670 #define SvAMAGIC_on(sv) (SvFLAGS(sv) |= SVf_AMAGIC)
671 #define SvAMAGIC_off(sv) (SvFLAGS(sv) &= ~SVf_AMAGIC)
673 #define SvGAMAGIC(sv) (SvFLAGS(sv) & (SVs_GMG|SVf_AMAGIC))
676 #define Gv_AMG(stash) \
677 (HV_AMAGICmb(stash) && \
678 ((!HV_AMAGICbad(stash) && HV_AMAGIC(stash)) || Gv_AMupdate(stash)))
680 #define Gv_AMG(stash) (PL_amagic_generation && Gv_AMupdate(stash))
682 #define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \
683 == (SVf_ROK|SVprv_WEAKREF))
684 #define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF))
685 #define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF))
687 #define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST)
689 #define SvPADBUSY(sv) (SvFLAGS(sv) & SVs_PADBUSY)
691 #define SvPADTMP(sv) (SvFLAGS(sv) & SVs_PADTMP)
692 #define SvPADTMP_on(sv) (SvFLAGS(sv) |= SVs_PADTMP|SVs_PADBUSY)
693 #define SvPADTMP_off(sv) (SvFLAGS(sv) &= ~SVs_PADTMP)
695 #define SvPADMY(sv) (SvFLAGS(sv) & SVs_PADMY)
696 #define SvPADMY_on(sv) (SvFLAGS(sv) |= SVs_PADMY|SVs_PADBUSY)
698 #define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP)
699 #define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP)
700 #define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP)
702 #define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT)
703 #define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT)
704 #define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT)
706 #define SvREADONLY(sv) (SvFLAGS(sv) & SVf_READONLY)
707 #define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY)
708 #define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY)
710 #define SvSCREAM(sv) (SvFLAGS(sv) & SVp_SCREAM)
711 #define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM)
712 #define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM)
714 #define SvCOMPILED(sv) (SvFLAGS(sv) & SVpfm_COMPILED)
715 #define SvCOMPILED_on(sv) (SvFLAGS(sv) |= SVpfm_COMPILED)
716 #define SvCOMPILED_off(sv) (SvFLAGS(sv) &= ~SVpfm_COMPILED)
718 #define SvEVALED(sv) (SvFLAGS(sv) & SVrepl_EVAL)
719 #define SvEVALED_on(sv) (SvFLAGS(sv) |= SVrepl_EVAL)
720 #define SvEVALED_off(sv) (SvFLAGS(sv) &= ~SVrepl_EVAL)
722 #define SvTAIL(sv) (SvFLAGS(sv) & SVpbm_TAIL)
723 #define SvTAIL_on(sv) (SvFLAGS(sv) |= SVpbm_TAIL)
724 #define SvTAIL_off(sv) (SvFLAGS(sv) &= ~SVpbm_TAIL)
726 #define SvVALID(sv) (SvFLAGS(sv) & SVpbm_VALID)
727 #define SvVALID_on(sv) (SvFLAGS(sv) |= SVpbm_VALID)
728 #define SvVALID_off(sv) (SvFLAGS(sv) &= ~SVpbm_VALID)
731 /* The following uses the FAKE flag to show that a regex pointer is infact
732 its own offset in the regexpad for ithreads */
733 #define SvREPADTMP(sv) (SvFLAGS(sv) & SVf_FAKE)
734 #define SvREPADTMP_on(sv) (SvFLAGS(sv) |= SVf_FAKE)
735 #define SvREPADTMP_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE)
738 #define SvRV(sv) ((XRV*) SvANY(sv))->xrv_rv
739 #define SvRVx(sv) SvRV(sv)
741 #define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv
742 #define SvIVXx(sv) SvIVX(sv)
743 #define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv
744 #define SvUVXx(sv) SvUVX(sv)
745 #define SvNVX(sv) ((XPVNV*)SvANY(sv))->xnv_nv
746 #define SvNVXx(sv) SvNVX(sv)
747 #define SvPVX(sv) ((XPV*) SvANY(sv))->xpv_pv
748 #define SvPVXx(sv) SvPVX(sv)
749 #define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur
750 #define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len
751 #define SvLENx(sv) SvLEN(sv)
752 #define SvEND(sv)(((XPV*) SvANY(sv))->xpv_pv + ((XPV*)SvANY(sv))->xpv_cur)
753 #define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv))
754 #define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic
755 #define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash
757 /* Ask a scalar nicely to try to become an IV, if possible.
758 Not guaranteed to stay returning void */
759 /* Macro won't actually call sv_2iv if already IOK */
760 #define SvIV_please(sv) \
761 STMT_START {if (!SvIOKp(sv) && (SvNOK(sv) || SvPOK(sv))) \
762 (void) SvIV(sv); } STMT_END
763 #define SvIV_set(sv, val) \
764 STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
765 (SvIVX(sv) = (val)); } STMT_END
766 #define SvNV_set(sv, val) \
767 STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \
768 (SvNVX(sv) = (val)); } STMT_END
769 #define SvPV_set(sv, val) \
770 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
771 (SvPVX(sv) = (val)); } STMT_END
772 #define SvCUR_set(sv, val) \
773 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
774 (SvCUR(sv) = (val)); } STMT_END
775 #define SvLEN_set(sv, val) \
776 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
777 (SvLEN(sv) = (val)); } STMT_END
778 #define SvEND_set(sv, val) \
779 STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
780 (SvCUR(sv) = (val) - SvPVX(sv)); } STMT_END
782 #define BmRARE(sv) ((XPVBM*) SvANY(sv))->xbm_rare
783 #define BmUSEFUL(sv) ((XPVBM*) SvANY(sv))->xbm_useful
784 #define BmPREVIOUS(sv) ((XPVBM*) SvANY(sv))->xbm_previous
786 #define FmLINES(sv) ((XPVFM*) SvANY(sv))->xfm_lines
788 #define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type
789 #define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ
790 #define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff
791 #define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen
793 #define IoIFP(sv) ((XPVIO*) SvANY(sv))->xio_ifp
794 #define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp
795 #define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp
796 #define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any
797 #define IoLINES(sv) ((XPVIO*) SvANY(sv))->xio_lines
798 #define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page
799 #define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len
800 #define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left
801 #define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name
802 #define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv
803 #define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name
804 #define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv
805 #define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name
806 #define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv
807 #define IoSUBPROCESS(sv)((XPVIO*) SvANY(sv))->xio_subprocess
808 #define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type
809 #define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags
811 /* IoTYPE(sv) is a single character telling the type of I/O connection. */
812 #define IoTYPE_RDONLY '<'
813 #define IoTYPE_WRONLY '>'
814 #define IoTYPE_RDWR '+'
815 #define IoTYPE_APPEND 'a'
816 #define IoTYPE_PIPE '|'
817 #define IoTYPE_STD '-' /* stdin or stdout */
818 #define IoTYPE_SOCKET 's'
819 #define IoTYPE_CLOSED ' '
820 #define IoTYPE_IMPLICIT 'I' /* stdin or stdout or stderr */
821 #define IoTYPE_NUMERIC '#' /* fdopen */
824 =for apidoc Am|bool|SvTAINTED|SV* sv
825 Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
828 =for apidoc Am|void|SvTAINTED_on|SV* sv
829 Marks an SV as tainted if tainting is enabled.
831 =for apidoc Am|void|SvTAINTED_off|SV* sv
832 Untaints an SV. Be I<very> careful with this routine, as it short-circuits
833 some of Perl's fundamental security features. XS module authors should not
834 use this function unless they fully understand all the implications of
835 unconditionally untainting the value. Untainting should be done in the
836 standard perl fashion, via a carefully crafted regexp, rather than directly
837 untainting variables.
839 =for apidoc Am|void|SvTAINT|SV* sv
840 Taints an SV if tainting is enabled.
845 #define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv))
846 #define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END
847 #define SvTAINTED_off(sv) STMT_START{ if(PL_tainting){sv_untaint(sv);} }STMT_END
849 #define SvTAINT(sv) \
858 =for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len
859 Like C<SvPV> but will force the SV into containing just a string
860 (C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
863 =for apidoc Am|char*|SvPV_force_nomg|SV* sv|STRLEN len
864 Like C<SvPV> but will force the SV into containing just a string
865 (C<SvPOK_only>). You want force if you are going to update the C<SvPVX>
866 directly. Doesn't process magic.
868 =for apidoc Am|char*|SvPV|SV* sv|STRLEN len
869 Returns a pointer to the string in the SV, or a stringified form of
870 the SV if the SV does not contain a string. The SV may cache the
871 stringified version becoming C<SvPOK>. Handles 'get' magic. See also
872 C<SvPVx> for a version which guarantees to evaluate sv only once.
874 =for apidoc Am|char*|SvPVx|SV* sv|STRLEN len
875 A version of C<SvPV> which guarantees to evaluate sv only once.
877 =for apidoc Am|char*|SvPV_nolen|SV* sv
878 Returns a pointer to the string in the SV, or a stringified form of
879 the SV if the SV does not contain a string. The SV may cache the
880 stringified form becoming C<SvPOK>. Handles 'get' magic.
882 =for apidoc Am|IV|SvIV|SV* sv
883 Coerces the given SV to an integer and returns it. See C<SvIVx> for a
884 version which guarantees to evaluate sv only once.
886 =for apidoc Am|IV|SvIVx|SV* sv
887 Coerces the given SV to an integer and returns it. Guarantees to evaluate
888 sv only once. Use the more efficient C<SvIV> otherwise.
890 =for apidoc Am|NV|SvNV|SV* sv
891 Coerce the given SV to a double and return it. See C<SvNVx> for a version
892 which guarantees to evaluate sv only once.
894 =for apidoc Am|NV|SvNVx|SV* sv
895 Coerces the given SV to a double and returns it. Guarantees to evaluate
896 sv only once. Use the more efficient C<SvNV> otherwise.
898 =for apidoc Am|UV|SvUV|SV* sv
899 Coerces the given SV to an unsigned integer and returns it. See C<SvUVx>
900 for a version which guarantees to evaluate sv only once.
902 =for apidoc Am|UV|SvUVx|SV* sv
903 Coerces the given SV to an unsigned integer and returns it. Guarantees to
904 evaluate sv only once. Use the more efficient C<SvUV> otherwise.
906 =for apidoc Am|bool|SvTRUE|SV* sv
907 Returns a boolean indicating whether Perl would evaluate the SV as true or
908 false, defined or undefined. Does not handle 'get' magic.
910 =for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len
911 Like C<SvPV_force>, but converts sv to utf8 first if necessary.
913 =for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len
914 Like C<SvPV>, but converts sv to utf8 first if necessary.
916 =for apidoc Am|char*|SvPVutf8_nolen|SV* sv
917 Like C<SvPV_nolen>, but converts sv to utf8 first if necessary.
919 =for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len
920 Like C<SvPV_force>, but converts sv to byte representation first if necessary.
922 =for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len
923 Like C<SvPV>, but converts sv to byte representation first if necessary.
925 =for apidoc Am|char*|SvPVbyte_nolen|SV* sv
926 Like C<SvPV_nolen>, but converts sv to byte representation first if necessary.
928 =for apidoc Am|char*|SvPVutf8x_force|SV* sv|STRLEN len
929 Like C<SvPV_force>, but converts sv to utf8 first if necessary.
930 Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8_force>
933 =for apidoc Am|char*|SvPVutf8x|SV* sv|STRLEN len
934 Like C<SvPV>, but converts sv to utf8 first if necessary.
935 Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8>
938 =for apidoc Am|char*|SvPVbytex_force|SV* sv|STRLEN len
939 Like C<SvPV_force>, but converts sv to byte representation first if necessary.
940 Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte_force>
943 =for apidoc Am|char*|SvPVbytex|SV* sv|STRLEN len
944 Like C<SvPV>, but converts sv to byte representation first if necessary.
945 Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte>
948 =for apidoc Am|bool|SvIsCOW|SV* sv
949 Returns a boolean indicating whether the SV is Copy-On-Write. (either shared
950 hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for
953 =for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv
954 Returns a boolean indicating whether the SV is Copy-On-Write shared hash key
957 =for apidoc Am|void|sv_catpvn_nomg|SV* sv|const char* ptr|STRLEN len
958 Like C<sv_catpvn> but doesn't process magic.
960 =for apidoc Am|void|sv_setsv_nomg|SV* dsv|SV* ssv
961 Like C<sv_setsv> but doesn't process magic.
963 =for apidoc Am|void|sv_catsv_nomg|SV* dsv|SV* ssv
964 Like C<sv_catsv> but doesn't process magic.
969 /* Let us hope that bitmaps for UV and IV are the same */
970 #define SvIV(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))
971 #define SvUV(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv))
972 #define SvNV(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv))
976 #define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC)
978 #define SvPV_flags(sv, lp, flags) \
979 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
980 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags))
982 #define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC)
984 #define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0)
986 #define SvPV_force_flags(sv, lp, flags) \
987 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \
988 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags))
990 #define SvPV_nolen(sv) \
991 ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
992 ? SvPVX(sv) : sv_2pv_nolen(sv))
994 #define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0)
998 #define SvPVutf8(sv, lp) \
999 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8) \
1000 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp))
1002 #define SvPVutf8_force(sv, lp) \
1003 ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == (SVf_POK|SVf_UTF8) \
1004 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp))
1007 #define SvPVutf8_nolen(sv) \
1008 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8)\
1009 ? SvPVX(sv) : sv_2pvutf8_nolen(sv))
1013 #define SvPVbyte(sv, lp) \
1014 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \
1015 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp))
1017 #define SvPVbyte_force(sv, lp) \
1018 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST)) == (SVf_POK) \
1019 ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyten_force(sv, &lp))
1021 #define SvPVbyte_nolen(sv) \
1022 ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK)\
1023 ? SvPVX(sv) : sv_2pvbyte_nolen(sv))
1027 /* define FOOx(): idempotent versions of FOO(). If possible, use a local
1028 * var to evaluate the arg once; failing that, use a global if possible;
1029 * failing that, call a function to do the work
1032 #define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp)
1033 #define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp)
1034 #define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp)
1036 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
1038 # define SvIVx(sv) ({SV *_sv = (SV*)(sv); SvIV(_sv); })
1039 # define SvUVx(sv) ({SV *_sv = (SV*)(sv); SvUV(_sv); })
1040 # define SvNVx(sv) ({SV *_sv = (SV*)(sv); SvNV(_sv); })
1041 # define SvPVx(sv, lp) ({SV *_sv = (sv); SvPV(_sv, lp); })
1042 # define SvPVutf8x(sv, lp) ({SV *_sv = (sv); SvPVutf8(_sv, lp); })
1043 # define SvPVbytex(sv, lp) ({SV *_sv = (sv); SvPVbyte(_sv, lp); })
1044 # define SvTRUE(sv) ( \
1048 ? (({XPV *nxpv = (XPV*)SvANY(sv); \
1050 (nxpv->xpv_cur > 1 || \
1051 (nxpv->xpv_cur && *nxpv->xpv_pv != '0')); }) \
1058 ? SvNVX(sv) != 0.0 \
1060 # define SvTRUEx(sv) ({SV *_sv = (sv); SvTRUE(_sv); })
1062 #else /* __GNUC__ */
1064 # ifdef USE_5005THREADS
1065 # define SvIVx(sv) sv_iv(sv)
1066 # define SvUVx(sv) sv_uv(sv)
1067 # define SvNVx(sv) sv_nv(sv)
1068 # define SvPVx(sv, lp) sv_pvn(sv, &lp)
1069 # define SvPVutf8x(sv, lp) sv_pvutf8n(sv, &lp)
1070 # define SvPVbytex(sv, lp) sv_pvbyten(sv, &lp)
1071 # define SvTRUE(sv) SvTRUEx(sv)
1072 # define SvTRUEx(sv) sv_true(sv)
1074 # else /* USE_5005THREADS */
1076 /* These inlined macros use globals, which will require a thread
1077 * declaration in user code, so we avoid them under threads */
1079 # define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv))
1080 # define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv))
1081 # define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv))
1082 # define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp))
1083 # define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp))
1084 # define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp))
1085 # define SvTRUE(sv) ( \
1089 ? ((PL_Xpv = (XPV*)SvANY(sv)) && \
1090 (PL_Xpv->xpv_cur > 1 || \
1091 (PL_Xpv->xpv_cur && *PL_Xpv->xpv_pv != '0')) \
1098 ? SvNVX(sv) != 0.0 \
1100 # define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv))
1101 # endif /* USE_5005THREADS */
1102 #endif /* __GNU__ */
1104 #define SvIsCOW(sv) ((SvFLAGS(sv) & (SVf_FAKE | SVf_READONLY)) == \
1105 (SVf_FAKE | SVf_READONLY))
1106 #define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0)
1108 /* flag values for sv_*_flags functions */
1109 #define SV_IMMEDIATE_UNREF 1
1111 #define SV_COW_DROP_PV 4 /* Unused in Perl 5.8.x */
1112 #define SV_UTF8_NO_ENCODING 8
1113 #define SV_NOSTEAL 16
1115 /* all these 'functions' are now just macros */
1117 #define sv_pv(sv) SvPV_nolen(sv)
1118 #define sv_pvutf8(sv) SvPVutf8_nolen(sv)
1119 #define sv_pvbyte(sv) SvPVbyte_nolen(sv)
1121 #define sv_pvn_force_nomg(sv, lp) sv_pvn_force_flags(sv, lp, 0)
1122 #define sv_utf8_upgrade_nomg(sv) sv_utf8_upgrade_flags(sv, 0)
1123 #define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0)
1124 #define sv_setsv(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_GMAGIC)
1125 #define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, 0)
1126 #define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC)
1127 #define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0)
1128 #define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC)
1129 #define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC)
1130 #define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0)
1131 #define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC)
1132 #define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC)
1134 /* Should be named SvCatPVN_utf8_upgrade? */
1135 #define sv_catpvn_utf8_upgrade(dsv, sstr, slen, nsv) \
1138 nsv = sv_2mortal(newSVpvn(sstr, slen)); \
1140 sv_setpvn(nsv, sstr, slen); \
1142 sv_utf8_upgrade(nsv); \
1143 sv_catsv(dsv, nsv); \
1147 =for apidoc Am|SV*|newRV_inc|SV* sv
1149 Creates an RV wrapper for an SV. The reference count for the original SV is
1155 #define newRV_inc(sv) newRV(sv)
1157 /* the following macros update any magic values this sv is associated with */
1160 =head1 Magical Functions
1162 =for apidoc Am|void|SvGETMAGIC|SV* sv
1163 Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its
1164 argument more than once.
1166 =for apidoc Am|void|SvSETMAGIC|SV* sv
1167 Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its
1168 argument more than once.
1170 =for apidoc Am|void|SvSetSV|SV* dsb|SV* ssv
1171 Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments
1174 =for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv
1175 Calls a non-destructive version of C<sv_setsv> if dsv is not the same as
1176 ssv. May evaluate arguments more than once.
1178 =for apidoc Am|void|SvSetMagicSV|SV* dsb|SV* ssv
1179 Like C<SvSetSV>, but does any set magic required afterwards.
1181 =for apidoc Am|void|SvSetMagicSV_nosteal|SV* dsv|SV* ssv
1182 Like C<SvSetSV_nosteal>, but does any set magic required afterwards.
1184 =for apidoc Am|void|SvSHARE|SV* sv
1185 Arranges for sv to be shared between threads if a suitable module
1188 =for apidoc Am|void|SvLOCK|SV* sv
1189 Arranges for a mutual exclusion lock to be obtained on sv if a suitable module
1192 =for apidoc Am|void|SvUNLOCK|SV* sv
1193 Releases a mutual exclusion lock on sv if a suitable module
1196 =head1 SV Manipulation Functions
1198 =for apidoc Am|char *|SvGROW|SV* sv|STRLEN len
1199 Expands the character buffer in the SV so that it has room for the
1200 indicated number of bytes (remember to reserve space for an extra trailing
1201 NUL character). Calls C<sv_grow> to perform the expansion if necessary.
1202 Returns a pointer to the character buffer.
1207 #define SvSHARE(sv) CALL_FPTR(PL_sharehook)(aTHX_ sv)
1208 #define SvLOCK(sv) CALL_FPTR(PL_lockhook)(aTHX_ sv)
1209 #define SvUNLOCK(sv) CALL_FPTR(PL_unlockhook)(aTHX_ sv)
1211 #define SvGETMAGIC(x) STMT_START { if (SvGMAGICAL(x)) mg_get(x); } STMT_END
1212 #define SvSETMAGIC(x) STMT_START { if (SvSMAGICAL(x)) mg_set(x); } STMT_END
1214 #define SvSetSV_and(dst,src,finally) \
1216 if ((dst) != (src)) { \
1217 sv_setsv(dst, src); \
1221 #define SvSetSV_nosteal_and(dst,src,finally) \
1223 if ((dst) != (src)) { \
1224 sv_setsv_flags(dst, src, SV_GMAGIC | SV_NOSTEAL); \
1229 #define SvSetSV(dst,src) \
1230 SvSetSV_and(dst,src,/*nothing*/;)
1231 #define SvSetSV_nosteal(dst,src) \
1232 SvSetSV_nosteal_and(dst,src,/*nothing*/;)
1234 #define SvSetMagicSV(dst,src) \
1235 SvSetSV_and(dst,src,SvSETMAGIC(dst))
1236 #define SvSetMagicSV_nosteal(dst,src) \
1237 SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst))
1240 #if !defined(SKIP_DEBUGGING)
1241 #define SvPEEK(sv) sv_peek(sv)
1243 #define SvPEEK(sv) ""
1246 #define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no || (sv)==&PL_sv_placeholder)
1248 #define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no)
1250 #define isGV(sv) (SvTYPE(sv) == SVt_PVGV)
1252 #define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv))
1253 #define Sv_Grow sv_grow
1255 #define CLONEf_COPY_STACKS 1
1256 #define CLONEf_KEEP_PTR_TABLE 2
1257 #define CLONEf_CLONE_HOST 4
1258 #define CLONEf_JOIN_IN 8
1260 struct clone_params {
1263 PerlInterpreter *proto_perl;
1266 #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)