3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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.
16 * This file is being used for x2p stuff.
17 * Above symbol is defined via -D in 'x2p/Makefile.SH'
18 * Decouple x2p stuff from some of perls more extreme eccentricities.
23 #endif /* PERL_FOR_X2P */
31 /* this is used for functions which take a depth trailing
32 * argument under debugging */
34 #define _pDEPTH ,U32 depth
35 #define _aDEPTH ,depth
41 /* NOTE 1: that with gcc -std=c89 the __STDC_VERSION__ is *not* defined
42 * because the __STDC_VERSION__ became a thing only with C90. Therefore,
43 * with gcc, HAS_C99 will never become true as long as we use -std=c89.
45 * NOTE 2: headers lie. Do not expect that if HAS_C99 gets to be true,
46 * all the C99 features are there and are correct. */
47 #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
48 defined(_STDC_C99) || defined(__c99)
52 /* See L<perlguts/"The Perl API"> for detailed notes on
53 * PERL_IMPLICIT_CONTEXT and PERL_IMPLICIT_SYS */
55 /* XXX NOTE that from here --> to <-- the same logic is
56 * repeated in makedef.pl, so be certain to update
57 * both places when editing. */
60 # if !defined(MULTIPLICITY)
65 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
66 # ifndef PERL_GLOBAL_STRUCT
67 # define PERL_GLOBAL_STRUCT
71 #ifdef PERL_GLOBAL_STRUCT
78 # ifndef PERL_IMPLICIT_CONTEXT
79 # define PERL_IMPLICIT_CONTEXT
83 /* undef WIN32 when building on Cygwin (for libwin32) - gph */
89 #if defined(__SYMBIAN32__) || (defined(__VC32__) && defined(WINS))
96 # include "symbian/symbian_proto.h"
99 /* Any stack-challenged places. The limit varies (and often
100 * is configurable), but using more than a kilobyte of stack
101 * is usually dubious in these systems. */
102 #if defined(__SYMBIAN32__)
103 /* Symbian: need to work around the SDK features. *
104 * On WINS: MS VC5 generates calls to _chkstk, *
105 * if a "large" stack frame is allocated. *
106 * gcc on MARM does not generate calls like these. */
107 # define USE_HEAP_INSTEAD_OF_STACK
110 /* Use the reentrant APIs like localtime_r and getpwent_r */
111 /* Win32 has naturally threadsafe libraries, no need to use any _r variants.
112 * XXX KEEP makedef.pl copy of this code in sync */
113 #if defined(USE_ITHREADS) && !defined(USE_REENTRANT_API) && !defined(NETWARE) && !defined(WIN32)
114 # define USE_REENTRANT_API
117 /* <--- here ends the logic shared by perl.h and makedef.pl */
119 #undef START_EXTERN_C
123 # define START_EXTERN_C extern "C" {
124 # define END_EXTERN_C }
125 # define EXTERN_C extern "C"
127 # define START_EXTERN_C
128 # define END_EXTERN_C
129 # define EXTERN_C extern
132 /* Fallback definitions in case we don't have definitions from config.h.
133 This should only matter for systems that don't use Configure and
134 haven't been modified to define PERL_STATIC_INLINE yet.
136 #if !defined(PERL_STATIC_INLINE)
137 # ifdef HAS_STATIC_INLINE
138 # define PERL_STATIC_INLINE static inline
140 # define PERL_STATIC_INLINE static
144 #if defined(PERL_GLOBAL_STRUCT) && !defined(PERL_GET_VARS)
145 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
146 EXTERN_C struct perl_vars* Perl_GetVarsPrivate();
147 # define PERL_GET_VARS() Perl_GetVarsPrivate() /* see miniperlmain.c */
149 # define PERL_GET_VARS() PL_VarsPtr
153 /* this used to be off by default, now its on, see perlio.h */
154 #define PERLIO_FUNCS_CONST
156 #define pVAR struct perl_vars* my_vars PERL_UNUSED_DECL
158 #ifdef PERL_GLOBAL_STRUCT
159 # define dVAR pVAR = (struct perl_vars*)PERL_GET_VARS()
164 #ifdef PERL_IMPLICIT_CONTEXT
165 # ifndef MULTIPLICITY
166 # define MULTIPLICITY
168 # define tTHX PerlInterpreter*
169 # define pTHX tTHX my_perl PERL_UNUSED_DECL
170 # define aTHX my_perl
171 # define aTHXa(a) aTHX = (tTHX)a
172 # ifdef PERL_GLOBAL_STRUCT
173 # define dTHXa(a) dVAR; pTHX = (tTHX)a
175 # define dTHXa(a) pTHX = (tTHX)a
177 # ifdef PERL_GLOBAL_STRUCT
178 # define dTHX dVAR; pTHX = PERL_GET_THX
180 # define dTHX pTHX = PERL_GET_THX
194 # if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL)
195 # define PERL_TRACK_MEMPOOL
198 # undef PERL_TRACK_MEMPOOL
202 # define dTHX_DEBUGGING dTHX
204 # define dTHX_DEBUGGING dNOOP
207 #define STATIC static
210 /* Do not use these macros. They were part of PERL_OBJECT, which was an
211 * implementation of multiplicity using C++ objects. They have been left
212 * here solely for the sake of XS code which has incorrectly
215 #define CPERLscope(x) x
216 #define CPERLarg void
219 #define PERL_OBJECT_THIS
220 #define _PERL_OBJECT_THIS
221 #define PERL_OBJECT_THIS_
222 #define CALL_FPTR(fptr) (*fptr)
223 #define MEMBER_TO_FPTR(name) name
224 #endif /* !PERL_CORE */
226 #define CALLRUNOPS PL_runops
228 #define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags))
230 #define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags)
231 #define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \
232 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \
233 (strbeg),(minend),(sv),(data),(flags))
234 #define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \
235 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \
236 (strend),(flags),(data))
237 #define CALLREG_INTUIT_STRING(prog) \
238 RX_ENGINE(prog)->checkstr(aTHX_ (prog))
240 #define CALLREGFREE(prog) \
241 Perl_pregfree(aTHX_ (prog))
243 #define CALLREGFREE_PVT(prog) \
244 if(prog && RX_ENGINE(prog)) RX_ENGINE(prog)->rxfree(aTHX_ (prog))
246 #define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \
247 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv))
249 #define CALLREG_NUMBUF_STORE(rx,paren,value) \
250 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value))
252 #define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \
253 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren))
255 #define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \
256 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH))
258 #define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \
259 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE))
261 #define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \
262 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE))
264 #define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \
265 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR))
267 #define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \
268 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS))
270 #define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \
271 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY))
273 #define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \
274 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY))
276 #define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \
277 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR))
279 #define CALLREG_NAMED_BUFF_COUNT(rx) \
280 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT)
282 #define CALLREG_NAMED_BUFF_ALL(rx, flags) \
283 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags)
285 #define CALLREG_PACKAGE(rx) \
286 RX_ENGINE(rx)->qr_package(aTHX_ (rx))
288 #if defined(USE_ITHREADS)
289 #define CALLREGDUPE(prog,param) \
290 Perl_re_dup(aTHX_ (prog),(param))
292 #define CALLREGDUPE_PVT(prog,param) \
293 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \
302 * Because of backward compatibility reasons the PERL_UNUSED_DECL
303 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh.
305 * Note that there are C compilers such as MetroWerks CodeWarrior
306 * which do not have an "inlined" way (like the gcc __attribute__) of
307 * marking unused variables (they need e.g. a #pragma) and therefore
308 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even
309 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above).
313 #if defined(__SYMBIAN32__) && defined(__GNUC__)
315 # define PERL_UNUSED_DECL
317 # define PERL_UNUSED_DECL __attribute__((unused))
321 #ifndef PERL_UNUSED_DECL
322 # if defined(HASATTRIBUTE_UNUSED) && (!defined(__cplusplus) || __GNUC__ >= 4)
323 # define PERL_UNUSED_DECL __attribute__unused__
325 # define PERL_UNUSED_DECL
330 * for silencing unused variables that are actually used most of the time,
331 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs,
332 * or variables/arguments that are used only in certain configurations.
334 #ifndef PERL_UNUSED_ARG
335 # define PERL_UNUSED_ARG(x) ((void)sizeof(x))
337 #ifndef PERL_UNUSED_VAR
338 # define PERL_UNUSED_VAR(x) ((void)sizeof(x))
341 #if defined(USE_ITHREADS) || defined(PERL_GLOBAL_STRUCT)
342 # define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl)
344 # define PERL_UNUSED_CONTEXT
347 /* gcc (-ansi) -pedantic doesn't allow gcc statement expressions,
348 * g++ allows them but seems to have problems with them
349 * (insane errors ensue).
350 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2).
352 #if defined(PERL_GCC_PEDANTIC) || \
353 (defined(__GNUC__) && defined(__cplusplus) && \
354 ((__GNUC__ < 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ < 2))))
355 # ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
356 # define PERL_GCC_BRACE_GROUPS_FORBIDDEN
360 /* Use PERL_UNUSED_RESULT() to suppress the warnings about unused results
361 * of function calls, e.g. PERL_UNUSED_RESULT(foo(a, b)).
363 * The main reason for this is that the combination of gcc -Wunused-result
364 * (part of -Wall) and the __attribute__((warn_unused_result)) cannot
365 * be silenced with casting to void. This causes trouble when the system
366 * header files use the attribute.
368 * Use PERL_UNUSED_RESULT sparingly, though, since usually the warning
369 * is there for a good reason: you might lose success/failure information,
370 * or leak resources, or changes in resources.
372 * But sometimes you just want to ignore the return value, e.g. on
373 * codepaths soon ending up in abort, or in "best effort" attempts,
374 * or in situations where there is no good way to handle failures.
376 * Sometimes PERL_UNUSED_RESULT might not be the most natural way:
377 * another possibility is that you can capture the return value
378 * and use PERL_UNUSED_VAR on that.
380 * The __typeof__() is used instead of typeof() since typeof() is not
381 * available under strict C89, and because of compilers masquerading
382 * as gcc (clang and icc), we want exactly the gcc extension
383 * __typeof__ and nothing else.
385 #ifndef PERL_UNUSED_RESULT
386 # if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT)
387 # define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END
389 # define PERL_UNUSED_RESULT(v) ((void)(v))
393 #if defined(_MSC_VER)
394 /* XXX older MSVC versions have a smallish macro buffer */
395 #define PERL_SMALL_MACRO_BUFFER
398 /* on gcc (and clang), specify that a warning should be temporarily
401 * GCC_DIAG_IGNORE_DECL(-Wmultichar);
403 * GCC_DIAG_RESTORE_DECL;
405 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html
407 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011;
408 * clang only pretends to be GCC 4.2, but still supports push/pop.
410 * Note on usage: all macros must be used at a place where a declaration
411 * or statement can occur, i.e., not in the middle of an expression.
412 * *_DIAG_IGNORE() and *_DIAG_RESTORE can be used in any such place, but
413 * must be used without a following semicolon. *_DIAG_IGNORE_DECL() and
414 * *_DIAG_RESTORE_DECL must be used with a following semicolon, and behave
415 * syntactically as declarations (like dNOOP). *_DIAG_IGNORE_STMT()
416 * and *_DIAG_RESTORE_STMT must be used with a following semicolon,
417 * and behave syntactically as statements (like NOOP).
421 #if defined(__clang__) || defined(__clang) || \
422 (defined( __GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406)
423 # define GCC_DIAG_PRAGMA(x) _Pragma (#x)
424 /* clang has "clang diagnostic" pragmas, but also understands gcc. */
425 # define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \
426 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x)
427 # define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop")
429 # define GCC_DIAG_IGNORE(w)
430 # define GCC_DIAG_RESTORE
432 #define GCC_DIAG_IGNORE_DECL(x) GCC_DIAG_IGNORE(x) dNOOP
433 #define GCC_DIAG_RESTORE_DECL GCC_DIAG_RESTORE dNOOP
434 #define GCC_DIAG_IGNORE_STMT(x) GCC_DIAG_IGNORE(x) NOOP
435 #define GCC_DIAG_RESTORE_STMT GCC_DIAG_RESTORE NOOP
436 /* for clang specific pragmas */
437 #if defined(__clang__) || defined(__clang)
438 # define CLANG_DIAG_PRAGMA(x) _Pragma (#x)
439 # define CLANG_DIAG_IGNORE(x) _Pragma("clang diagnostic push") \
440 CLANG_DIAG_PRAGMA(clang diagnostic ignored #x)
441 # define CLANG_DIAG_RESTORE _Pragma("clang diagnostic pop")
443 # define CLANG_DIAG_IGNORE(w)
444 # define CLANG_DIAG_RESTORE
446 #define CLANG_DIAG_IGNORE_DECL(x) CLANG_DIAG_IGNORE(x) dNOOP
447 #define CLANG_DIAG_RESTORE_DECL CLANG_DIAG_RESTORE dNOOP
448 #define CLANG_DIAG_IGNORE_STMT(x) CLANG_DIAG_IGNORE(x) NOOP
449 #define CLANG_DIAG_RESTORE_STMT CLANG_DIAG_RESTORE NOOP
451 #if defined(_MSC_VER) && (_MSC_VER >= 1300)
452 # define MSVC_DIAG_IGNORE(x) __pragma(warning(push)) \
453 __pragma(warning(disable : x))
454 # define MSVC_DIAG_RESTORE __pragma(warning(pop))
456 # define MSVC_DIAG_IGNORE(x)
457 # define MSVC_DIAG_RESTORE
459 #define MSVC_DIAG_IGNORE_DECL(x) MSVC_DIAG_IGNORE(x) dNOOP
460 #define MSVC_DIAG_RESTORE_DECL MSVC_DIAG_RESTORE dNOOP
461 #define MSVC_DIAG_IGNORE_STMT(x) MSVC_DIAG_IGNORE(x) NOOP
462 #define MSVC_DIAG_RESTORE_STMT MSVC_DIAG_RESTORE NOOP
464 #define NOOP /*EMPTY*/(void)0
465 #define dNOOP struct Perl___notused_struct
468 /* Don't bother defining tTHX ; using it outside
469 * code guarded by PERL_IMPLICIT_CONTEXT is an error.
475 # define aTHXa(a) NOOP
476 # define dTHXa(a) dNOOP
494 /* these are only defined for compatibility; should not be used internally */
495 #if !defined(pTHXo) && !defined(PERL_CORE)
497 # define pTHXo_ pTHX_
499 # define aTHXo_ aTHX_
501 # define dTHXoa(x) dTHXa(x)
505 # define pTHXx PerlInterpreter *my_perl
506 # define pTHXx_ pTHXx,
507 # define aTHXx my_perl
508 # define aTHXx_ aTHXx,
512 /* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation)
513 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...).
514 * dTHXs is therefore needed for all functions using PerlIO_foo(). */
515 #ifdef PERL_IMPLICIT_SYS
516 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
517 # define dTHXs dVAR; dTHX
522 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
529 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
530 # ifndef PERL_USE_GCC_BRACE_GROUPS
531 # define PERL_USE_GCC_BRACE_GROUPS
536 =head1 Miscellaneous Functions
538 =for apidoc AmnUu|void|STMT_START
540 STMT_START { statements; } STMT_END;
542 can be used as a single statement, as in
544 if (x) STMT_START { ... } STMT_END; else ...
546 These are often used in macro definitions. Note that you can't return a value
549 =for apidoc AmnUhu|void|STMT_END
553 Trying to select a version that gives no warnings...
555 #if !(defined(STMT_START) && defined(STMT_END))
556 # ifdef PERL_USE_GCC_BRACE_GROUPS
557 # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
560 # define STMT_START do
561 # define STMT_END while (0)
565 #ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
566 # define BYTEORDER 0x1234
569 #if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
576 * The following contortions are brought to you on behalf of all the
577 * standards, semi-standards, de facto standards, not-so-de-facto standards
578 * of the world, as well as all the other botches anyone ever thought of.
579 * The basic theory is that if we work hard enough here, the rest of the
580 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
583 /* define this once if either system, instead of cluttering up the src */
584 #if defined(MSDOS) || defined(WIN32) || defined(NETWARE)
588 /* These exist only for back-compat with XS modules. */
591 #define CAN_PROTOTYPE
598 /* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT,
599 * you get a perl without taint support, but doubtlessly with a lesser
600 * degree of support. Do not do so unless you know exactly what it means
601 * technically, have a good reason to do so, and know exactly how the
602 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered
603 * a potential security risk due to flat out ignoring the security-relevant
604 * taint flags. This being said, a perl without taint support compiled in
605 * has marginal run-time performance benefits.
606 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT.
607 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it
608 * silently ignores -t/-T instead of throwing an exception.
610 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT
611 * voids your nonexistent warranty!
613 #if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT)
614 # define NO_TAINT_SUPPORT 1
617 /* NO_TAINT_SUPPORT can be set to transform virtually all taint-related
618 * operations into no-ops for a very modest speed-up. Enable only if you
619 * know what you're doing: tests and CPAN modules' tests are bound to fail.
621 #ifdef NO_TAINT_SUPPORT
623 # define TAINT_NOT NOOP
624 # define TAINT_IF(c) NOOP
625 # define TAINT_ENV() NOOP
626 # define TAINT_PROPER(s) NOOP
627 # define TAINT_set(s) NOOP
629 # define TAINTING_get 0
630 # define TAINTING_set(s) NOOP
631 # define TAINT_WARN_get 0
632 # define TAINT_WARN_set(s) NOOP
634 /* Set to tainted if we are running under tainting mode */
635 # define TAINT (PL_tainted = PL_tainting)
637 # define TAINT_NOT (PL_tainted = FALSE) /* Untaint */
638 # define TAINT_IF(c) if (UNLIKELY(c)) { TAINT; } /* Conditionally taint */
639 # define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); }
640 /* croak or warn if tainting */
641 # define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { \
642 taint_proper(NULL, s); \
644 # define TAINT_set(s) (PL_tainted = (s))
645 # define TAINT_get (PL_tainted) /* Is something tainted? */
646 # define TAINTING_get (PL_tainting) /* Is taint checking enabled? */
647 # define TAINTING_set(s) (PL_tainting = (s))
648 # define TAINT_WARN_get (PL_taint_warn) /* FALSE => tainting violations
652 # define TAINT_WARN_set(s) (PL_taint_warn = (s))
655 /* flags used internally only within pp_subst and pp_substcont */
657 # define SUBST_TAINT_STR 1 /* string tainted */
658 # define SUBST_TAINT_PAT 2 /* pattern tainted */
659 # define SUBST_TAINT_REPL 4 /* replacement tainted */
660 # define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */
661 # define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */
664 /* XXX All process group stuff is handled in pp_sys.c. Should these
665 defines move there? If so, I could simplify this a lot. --AD 9/96.
667 /* Process group stuff changed from traditional BSD to POSIX.
668 perlfunc.pod documents the traditional BSD-style syntax, so we'll
669 try to preserve that, if possible.
672 # define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
673 #elif defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
674 # define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
675 #elif defined(HAS_SETPGRP2)
676 # define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
678 #if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
679 # define HAS_SETPGRP /* Well, effectively it does . . . */
682 /* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
683 our life easier :-) so we'll try it.
686 # define BSD_GETPGRP(pid) getpgid((pid))
687 #elif defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
688 # define BSD_GETPGRP(pid) getpgrp((pid))
689 #elif defined(HAS_GETPGRP2)
690 # define BSD_GETPGRP(pid) getpgrp2((pid))
692 #if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
693 # define HAS_GETPGRP /* Well, effectively it does . . . */
696 /* These are not exact synonyms, since setpgrp() and getpgrp() may
697 have different behaviors, but perl.h used to define USE_BSDPGRP
698 (prior to 5.003_05) so some extension might depend on it.
700 #if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
706 /* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that
707 pthread.h must be included before all other header files.
709 #if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
710 # include <pthread.h>
713 #include <sys/types.h>
725 #ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
738 # include <xlocale.h>
741 /* If not forbidden, we enable locale handling if either 1) the POSIX 2008
742 * functions are available, or 2) just the setlocale() function. This logic is
743 * repeated in t/loc_tools.pl and makedef.pl; The three should be kept in
745 #if ! defined(NO_LOCALE)
747 # if ! defined(NO_POSIX_2008_LOCALE) \
748 && defined(HAS_NEWLOCALE) \
749 && defined(HAS_USELOCALE) \
750 && defined(HAS_DUPLOCALE) \
751 && defined(HAS_FREELOCALE) \
752 && defined(LC_ALL_MASK)
754 /* For simplicity, the code is written to assume that any platform advanced
755 * enough to have the Posix 2008 locale functions has LC_ALL. The final
756 * test above makes sure that assumption is valid */
758 # define HAS_POSIX_2008_LOCALE
760 # elif defined(HAS_SETLOCALE)
766 # define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
768 # if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
769 && defined(HAS_STRXFRM)
770 # define USE_LOCALE_COLLATE
772 # if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
773 # define USE_LOCALE_CTYPE
775 # if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
776 # define USE_LOCALE_NUMERIC
778 # if !defined(NO_LOCALE_MESSAGES) && defined(LC_MESSAGES)
779 # define USE_LOCALE_MESSAGES
781 # if !defined(NO_LOCALE_MONETARY) && defined(LC_MONETARY)
782 # define USE_LOCALE_MONETARY
784 # if !defined(NO_LOCALE_TIME) && defined(LC_TIME)
785 # define USE_LOCALE_TIME
787 # if !defined(NO_LOCALE_ADDRESS) && defined(LC_ADDRESS)
788 # define USE_LOCALE_ADDRESS
790 # if !defined(NO_LOCALE_IDENTIFICATION) && defined(LC_IDENTIFICATION)
791 # define USE_LOCALE_IDENTIFICATION
793 # if !defined(NO_LOCALE_MEASUREMENT) && defined(LC_MEASUREMENT)
794 # define USE_LOCALE_MEASUREMENT
796 # if !defined(NO_LOCALE_PAPER) && defined(LC_PAPER)
797 # define USE_LOCALE_PAPER
799 # if !defined(NO_LOCALE_TELEPHONE) && defined(LC_TELEPHONE)
800 # define USE_LOCALE_TELEPHONE
803 /* XXX The next few defines are unfortunately duplicated in makedef.pl, and
804 * changes here MUST also be made there */
806 # if ! defined(HAS_SETLOCALE) && defined(HAS_POSIX_2008_LOCALE)
807 # define USE_POSIX_2008_LOCALE
808 # ifndef USE_THREAD_SAFE_LOCALE
809 # define USE_THREAD_SAFE_LOCALE
812 * -DUSE_THREAD_SAFE_LOCALE, will do so even
813 * on unthreaded builds */
814 # elif (defined(USE_ITHREADS) || defined(USE_THREAD_SAFE_LOCALE)) \
815 && ( defined(HAS_POSIX_2008_LOCALE) \
816 || (defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1400)) \
817 && ! defined(NO_THREAD_SAFE_LOCALE)
818 # ifndef USE_THREAD_SAFE_LOCALE
819 # define USE_THREAD_SAFE_LOCALE
821 # ifdef HAS_POSIX_2008_LOCALE
822 # define USE_POSIX_2008_LOCALE
827 /* Microsoft documentation reads in the change log for VS 2015:
828 * "The localeconv function declared in locale.h now works correctly when
829 * per-thread locale is enabled. In previous versions of the library, this
830 * function would return the lconv data for the global locale, not the
833 #if defined(WIN32) && defined(USE_THREAD_SAFE_LOCALE) && _MSC_VER < 1900
834 # define TS_W32_BROKEN_LOCALECONV
840 # ifdef PARAM_NEEDS_TYPES
841 # include <sys/types.h>
843 # include <sys/param.h>
846 /* On BSD-derived systems, <sys/param.h> defines BSD to a year-month
847 value something like 199306. This may be useful if no more-specific
848 feature test is available.
856 /* Use all the "standard" definitions */
859 /* If this causes problems, set i_unistd=undef in the hint file. */
861 # if defined(__amigaos4__)
863 # include <netinet/in.h>
867 # if defined(__amigaos4__)
868 /* Under AmigaOS 4 newlib.library provides an environ. However using
869 * it doesn't give us enough control over inheritance of variables by
870 * subshells etc. so replace with custom version based on abc-shell
872 extern char **myenviron;
874 # define environ myenviron
880 # include <sys/wait.h>
884 # undef _SC_ARG_MAX /* Symbian has _SC_ARG_MAX but no sysconf() */
887 #if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO)
888 EXTERN_C int syscall(int, ...);
891 #if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO)
892 EXTERN_C int usleep(unsigned int);
895 /* macros for correct constant construction. These are in C99 <stdint.h>
896 * (so they will not be available in strict C89 mode), but they are nice, so
897 * let's define them if necessary. */
900 # define UINT16_C(x) ((U16_TYPE)x##U)
902 # define UINT16_C(x) ((U16_TYPE)x##UL)
908 # define UINT32_C(x) ((U32_TYPE)x##U)
910 # define UINT32_C(x) ((U32_TYPE)x##UL)
915 typedef intmax_t PERL_INTMAX_T;
916 typedef uintmax_t PERL_UINTMAX_T;
919 /* N.B. We use QUADKIND here instead of HAS_QUAD here, because that doesn't
920 * actually mean what it has always been documented to mean (see RT #119753)
921 * and is explicitly turned off outside of core with dire warnings about
922 * removing the undef. */
924 #if defined(QUADKIND)
926 # undef PeRl_UINT64_C
927 /* Prefer the native integer types (int and long) over long long
928 * (which is not C89) and Win32-specific __int64. */
929 # if QUADKIND == QUAD_IS_INT && INTSIZE == 8
930 # define PeRl_INT64_C(c) (c)
931 # define PeRl_UINT64_C(c) CAT2(c,U)
933 # if QUADKIND == QUAD_IS_LONG && LONGSIZE == 8
934 # define PeRl_INT64_C(c) CAT2(c,L)
935 # define PeRl_UINT64_C(c) CAT2(c,UL)
937 # if QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LONG_LONG)
938 # define PeRl_INT64_C(c) CAT2(c,LL)
939 # define PeRl_UINT64_C(c) CAT2(c,ULL)
941 # if QUADKIND == QUAD_IS___INT64
942 # define PeRl_INT64_C(c) CAT2(c,I64)
943 # define PeRl_UINT64_C(c) CAT2(c,UI64)
945 # ifndef PeRl_INT64_C
946 # define PeRl_INT64_C(c) ((I64)(c)) /* last resort */
947 # define PeRl_UINT64_C(c) ((U64TYPE)(c))
949 /* In OS X the INT64_C/UINT64_C are defined with LL/ULL, which will
950 * not fly with C89-pedantic gcc, so let's undefine them first so that
951 * we can redefine them with our native integer preferring versions. */
952 # if defined(PERL_DARWIN) && defined(PERL_GCC_PEDANTIC)
957 # define INT64_C(c) PeRl_INT64_C(c)
960 # define UINT64_C(c) PeRl_UINT64_C(c)
964 typedef I64TYPE PERL_INTMAX_T;
965 typedef U64TYPE PERL_UINTMAX_T;
968 # define INTMAX_C(c) INT64_C(c)
971 # define UINTMAX_C(c) UINT64_C(c)
974 #else /* below QUADKIND is undefined */
976 /* Perl doesn't work on 16 bit systems, so must be 32 bit */
978 typedef I32TYPE PERL_INTMAX_T;
979 typedef U32TYPE PERL_UINTMAX_T;
982 # define INTMAX_C(c) INT32_C(c)
985 # define UINTMAX_C(c) UINT32_C(c)
988 #endif /* no QUADKIND */
992 /* byte-swapping functions for big-/little-endian conversion */
993 # define _swab_16_(x) ((U16)( \
994 (((U16)(x) & UINT16_C(0x00ff)) << 8) | \
995 (((U16)(x) & UINT16_C(0xff00)) >> 8) ))
997 # define _swab_32_(x) ((U32)( \
998 (((U32)(x) & UINT32_C(0x000000ff)) << 24) | \
999 (((U32)(x) & UINT32_C(0x0000ff00)) << 8) | \
1000 (((U32)(x) & UINT32_C(0x00ff0000)) >> 8) | \
1001 (((U32)(x) & UINT32_C(0xff000000)) >> 24) ))
1004 # define _swab_64_(x) ((U64)( \
1005 (((U64)(x) & UINT64_C(0x00000000000000ff)) << 56) | \
1006 (((U64)(x) & UINT64_C(0x000000000000ff00)) << 40) | \
1007 (((U64)(x) & UINT64_C(0x0000000000ff0000)) << 24) | \
1008 (((U64)(x) & UINT64_C(0x00000000ff000000)) << 8) | \
1009 (((U64)(x) & UINT64_C(0x000000ff00000000)) >> 8) | \
1010 (((U64)(x) & UINT64_C(0x0000ff0000000000)) >> 24) | \
1011 (((U64)(x) & UINT64_C(0x00ff000000000000)) >> 40) | \
1012 (((U64)(x) & UINT64_C(0xff00000000000000)) >> 56) ))
1015 /* The old value was hard coded at 1008. (4096-16) seems to be a bit faster,
1016 at least on FreeBSD. YMMV, so experiment. */
1017 #ifndef PERL_ARENA_SIZE
1018 #define PERL_ARENA_SIZE 4080
1021 /* Maximum level of recursion */
1022 #ifndef PERL_SUB_DEPTH_WARN
1023 #define PERL_SUB_DEPTH_WARN 100
1026 #endif /* PERL_CORE */
1028 /* Maximum number of args that may be passed to an OP_MULTICONCAT op.
1029 * It determines the size of local arrays in S_maybe_multiconcat() and
1032 #define PERL_MULTICONCAT_MAXARG 64
1034 /* The indexes of fields of a multiconcat aux struct.
1035 * The fixed fields are followed by nargs+1 const segment lengths,
1036 * and if utf8 and non-utf8 differ, a second nargs+1 set for utf8.
1039 #define PERL_MULTICONCAT_IX_NARGS 0 /* number of arguments */
1040 #define PERL_MULTICONCAT_IX_PLAIN_PV 1 /* non-utf8 constant string */
1041 #define PERL_MULTICONCAT_IX_PLAIN_LEN 2 /* non-utf8 constant string length */
1042 #define PERL_MULTICONCAT_IX_UTF8_PV 3 /* utf8 constant string */
1043 #define PERL_MULTICONCAT_IX_UTF8_LEN 4 /* utf8 constant string length */
1044 #define PERL_MULTICONCAT_IX_LENGTHS 5 /* first of nargs+1 const segment lens */
1045 #define PERL_MULTICONCAT_HEADER_SIZE 5 /* The number of fields of a
1046 multiconcat header */
1048 /* We no longer default to creating a new SV for GvSV.
1049 Do this before embed. */
1050 #ifndef PERL_CREATE_GVSV
1051 # ifndef PERL_DONT_CREATE_GVSV
1052 # define PERL_DONT_CREATE_GVSV
1056 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
1057 #define PERL_USES_PL_PIDSTATUS
1060 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(__SYMBIAN32__)
1061 #define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
1064 #define MEM_SIZE Size_t
1066 /* Round all values passed to malloc up, by default to a multiple of
1069 #ifndef PERL_STRLEN_ROUNDUP_QUANTUM
1070 #define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size
1073 /* sv_grow() will expand strings by at least a certain percentage of
1074 the previously *used* length to avoid excessive calls to realloc().
1075 The default is 25% of the current length.
1077 #ifndef PERL_STRLEN_EXPAND_SHIFT
1078 # define PERL_STRLEN_EXPAND_SHIFT 2
1081 /* This use of offsetof() requires /Zc:offsetof- for VS2017 (and presumably
1082 * onwards) when building Socket.xs, but we can just use a different definition
1083 * for STRUCT_OFFSET instead. */
1084 #if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1910
1085 # define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
1087 # include <stddef.h>
1088 # define STRUCT_OFFSET(s,m) offsetof(s,m)
1091 /* ptrdiff_t is C11, so undef it under pedantic builds. (Actually it is
1092 * in C89, but apparently there are platforms where it doesn't exist. See
1093 * thread beginning at http://nntp.perl.org/group/perl.perl5.porters/251541.)
1095 #ifdef PERL_GCC_PEDANTIC
1096 # undef HAS_PTRDIFF_T
1099 #ifdef HAS_PTRDIFF_T
1100 # define Ptrdiff_t ptrdiff_t
1102 # define Ptrdiff_t SSize_t
1105 #ifndef __SYMBIAN32__
1106 # include <string.h>
1109 /* This comes after <stdlib.h> so we don't try to change the standard
1110 * library prototypes; we'll use our own in proto.h instead. */
1113 # ifdef PERL_POLLUTE_MALLOC
1114 # ifndef PERL_EXTMALLOC_DEF
1115 # define Perl_malloc malloc
1116 # define Perl_calloc calloc
1117 # define Perl_realloc realloc
1118 # define Perl_mfree free
1121 # define EMBEDMYMALLOC /* for compatibility */
1124 # define safemalloc Perl_malloc
1125 # define safecalloc Perl_calloc
1126 # define saferealloc Perl_realloc
1127 # define safefree Perl_mfree
1128 # define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \
1129 if (!TAINTING_get && MallocCfg_ptr[MallocCfg_cfg_env_read]) \
1132 # define CHECK_MALLOC_TOO_LATE_FOR(ch) \
1133 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch))
1134 # define panic_write2(s) write(2, s, strlen(s))
1135 # define CHECK_MALLOC_TAINT(newval) \
1136 CHECK_MALLOC_TOO_LATE_FOR_( \
1138 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\
1140 # define MALLOC_CHECK_TAINT(argc,argv,env) STMT_START { \
1141 if (doing_taint(argc,argv,env)) { \
1142 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \
1144 #else /* MYMALLOC */
1145 # define safemalloc safesysmalloc
1146 # define safecalloc safesyscalloc
1147 # define saferealloc safesysrealloc
1148 # define safefree safesysfree
1149 # define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0)
1150 # define CHECK_MALLOC_TAINT(newval) ((void)0)
1151 # define MALLOC_CHECK_TAINT(argc,argv,env)
1152 #endif /* MYMALLOC */
1154 /* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */
1155 #define TOO_LATE_FOR_(ch,what) Perl_croak(aTHX_ "\"-%c\" is on the #! line, it must also be used on the command line%s", (char)(ch), what)
1156 #define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "")
1157 #define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
1158 #define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
1161 # define memzero(d,l) memset(d,0,l)
1165 # include <netinet/in.h>
1169 # include <arpa/inet.h>
1173 # include <sys/stat.h>
1176 /* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO.
1177 This definition should ideally go into win32/win32.h, but S_IFIFO is
1178 used later here in perl.h before win32/win32.h is being included. */
1179 #if !defined(S_IFIFO) && defined(_S_IFIFO)
1180 # define S_IFIFO _S_IFIFO
1183 /* The stat macros for Unisoft System V/88 (and derivatives
1184 like UTekV) are broken, sometimes giving false positives. Undefine
1185 them here and let the code below set them to proper values.
1187 The ghs macro stands for GreenHills Software C-1.8.5 which
1188 is the C compiler for sysV88 and the various derivatives.
1189 This header file bug is corrected in gcc-2.5.8 and later versions.
1190 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
1192 #if defined(m88k) && defined(ghs)
1204 # ifdef I_SYS_TIME_KERNEL
1207 # include <sys/time.h>
1208 # ifdef I_SYS_TIME_KERNEL
1213 #if defined(HAS_TIMES) && defined(I_SYS_TIMES)
1214 # include <sys/times.h>
1219 #if defined(WIN32) && defined(PERL_IMPLICIT_SYS)
1220 # define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
1223 #if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */
1224 # include <sys/socket.h>
1225 # if defined(USE_SOCKS) && defined(I_SOCKS)
1226 # if !defined(INCLUDE_PROTOTYPES)
1227 # define INCLUDE_PROTOTYPES /* for <socks.h> */
1228 # define PERL_SOCKS_NEED_PROTOTYPES
1231 # ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
1232 # undef INCLUDE_PROTOTYPES
1233 # undef PERL_SOCKS_NEED_PROTOTYPES
1244 # include <net/errno.h>
1249 /* sockatmark() is so new (2001) that many places might have it hidden
1250 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required
1251 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */
1252 #if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO)
1253 # if defined(__THROW) && defined(__GLIBC__)
1254 int sockatmark(int) __THROW;
1256 int sockatmark(int);
1260 #if defined(__osf__) && defined(__cplusplus) && !defined(_XOPEN_SOURCE_EXTENDED) /* Tru64 "cxx" (C++), see hints/dec_osf.sh for why the _XOPEN_SOURCE_EXTENDED cannot be defined. */
1261 EXTERN_C int fchdir(int);
1262 EXTERN_C int flock(int, int);
1263 EXTERN_C int fseeko(FILE *, off_t, int);
1264 EXTERN_C off_t ftello(FILE *);
1267 #if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */
1268 EXTERN_C char *crypt(const char *, const char *);
1271 #if defined(__cplusplus) && defined(__CYGWIN__)
1272 EXTERN_C char *crypt(const char *, const char *);
1278 =for apidoc m|void|SETERRNO|int errcode|int vmserrcode
1280 Set C<errno>, and on VMS set C<vaxc$errno>.
1282 =for apidoc mn|void|dSAVEDERRNO
1284 Declare variables needed to save C<errno> and any operating system
1285 specific error number.
1287 =for apidoc mn|void|dSAVE_ERRNO
1289 Declare variables needed to save C<errno> and any operating system
1290 specific error number, and save them for optional later restoration
1291 by C<RESTORE_ERRNO>.
1293 =for apidoc mn|void|SAVE_ERRNO
1295 Save C<errno> and any operating system specific error number for
1296 optional later restoration by C<RESTORE_ERRNO>. Requires
1297 C<dSAVEDERRNO> or C<dSAVE_ERRNO> in scope.
1299 =for apidoc mn|void|RESTORE_ERRNO
1301 Restore C<errno> and any operating system specific error number that
1302 was saved by C<dSAVE_ERRNO> or C<RESTORE_ERRNO>.
1308 # undef SETERRNO /* SOCKS might have defined this */
1312 # define SETERRNO(errcode,vmserrcode) \
1314 set_errno(errcode); \
1315 set_vaxc_errno(vmserrcode); \
1317 # define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno
1318 # define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno
1319 # define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno )
1320 # define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno)
1322 # define LIB_INVARG LIB$_INVARG
1323 # define RMS_DIR RMS$_DIR
1324 # define RMS_FAC RMS$_FAC
1325 # define RMS_FEX RMS$_FEX
1326 # define RMS_FNF RMS$_FNF
1327 # define RMS_IFI RMS$_IFI
1328 # define RMS_ISI RMS$_ISI
1329 # define RMS_PRV RMS$_PRV
1330 # define SS_ACCVIO SS$_ACCVIO
1331 # define SS_DEVOFFLINE SS$_DEVOFFLINE
1332 # define SS_IVCHAN SS$_IVCHAN
1333 # define SS_NORMAL SS$_NORMAL
1334 # define SS_NOPRIV SS$_NOPRIV
1335 # define SS_BUFFEROVF SS$_BUFFEROVF
1337 # define LIB_INVARG 0
1345 # define SS_ACCVIO 0
1346 # define SS_DEVOFFLINE 0
1347 # define SS_IVCHAN 0
1348 # define SS_NORMAL 0
1349 # define SS_NOPRIV 0
1350 # define SS_BUFFEROVF 0
1354 # define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno
1355 # define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError()
1356 # define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() )
1357 # define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) )
1361 # define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno
1362 # define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc
1363 # define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc )
1364 # define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno )
1368 # define SETERRNO(errcode,vmserrcode) (errno = (errcode))
1372 # define dSAVEDERRNO int saved_errno
1373 # define dSAVE_ERRNO int saved_errno = errno
1374 # define SAVE_ERRNO (saved_errno = errno)
1375 # define RESTORE_ERRNO (errno = saved_errno)
1379 =head1 Warning and Dieing
1381 =for apidoc Amn|SV *|ERRSV
1383 Returns the SV for C<$@>, creating it if needed.
1385 =for apidoc Am|void|CLEAR_ERRSV
1387 Clear the contents of C<$@>, setting it to the empty string.
1389 This replaces any read-only SV with a fresh SV and removes any magic.
1391 =for apidoc Am|void|SANE_ERRSV
1393 Clean up ERRSV so we can safely set it.
1395 This replaces any read-only SV with a fresh writable copy and removes
1401 #define ERRSV GvSVn(PL_errgv)
1403 /* contains inlined gv_add_by_type */
1404 #define CLEAR_ERRSV() STMT_START { \
1405 SV ** const svp = &GvSV(PL_errgv); \
1407 *svp = newSVpvs(""); \
1408 } else if (SvREADONLY(*svp)) { \
1409 SvREFCNT_dec_NN(*svp); \
1410 *svp = newSVpvs(""); \
1412 SV *const errsv = *svp; \
1414 SvPOK_only(errsv); \
1415 if (SvMAGICAL(errsv)) { \
1421 /* contains inlined gv_add_by_type */
1422 #define SANE_ERRSV() STMT_START { \
1423 SV ** const svp = &GvSV(PL_errgv); \
1425 *svp = newSVpvs(""); \
1426 } else if (SvREADONLY(*svp)) { \
1427 SV *dupsv = newSVsv(*svp); \
1428 SvREFCNT_dec_NN(*svp); \
1431 SV *const errsv = *svp; \
1432 if (SvMAGICAL(errsv)) { \
1440 # define DEFSV (0 + GvSVn(PL_defgv))
1441 # define DEFSV_set(sv) \
1442 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv))
1443 # define SAVE_DEFSV \
1445 save_gp(PL_defgv, 0), \
1446 GvINTRO_off(PL_defgv), \
1447 SAVEGENERICSV(GvSV(PL_defgv)), \
1448 GvSV(PL_defgv) = NULL \
1451 # define DEFSV GvSVn(PL_defgv)
1452 # define DEFSV_set(sv) (GvSV(PL_defgv) = (sv))
1453 # define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
1457 extern int errno; /* ANSI allows errno to be an lvalue expr.
1458 * For example in multithreaded environments
1459 * something like this might happen:
1460 * extern int *_errno(void);
1461 * #define errno (*_errno()) */
1464 #define UNKNOWN_ERRNO_MSG "(unknown)"
1467 #define Strerror(e) strerror((e), vaxc$errno)
1469 #define Strerror(e) strerror(e)
1474 # include <sys/ioctl.h>
1478 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
1479 # ifdef HAS_SOCKETPAIR
1480 # undef HAS_SOCKETPAIR
1487 #ifndef HAS_SOCKETPAIR
1489 # define socketpair Perl_my_socketpair
1494 # define htoni htons
1495 # define ntohi ntohs
1497 # define htoni htonl
1498 # define ntohi ntohl
1501 /* Configure already sets Direntry_t */
1502 #if defined(I_DIRENT)
1503 # include <dirent.h>
1504 #elif defined(I_SYS_NDIR)
1505 # include <sys/ndir.h>
1506 #elif defined(I_SYS_DIR)
1507 # include <sys/dir.h>
1511 * The following gobbledygook brought to you on behalf of __STDC__.
1512 * (I could just use #ifndef __STDC__, but this is more bulletproof
1513 * in the face of half-implementations.)
1516 #if defined(I_SYSMODE)
1517 #include <sys/mode.h>
1522 # define S_IFMT _S_IFMT
1524 # define S_IFMT 0170000
1529 # define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
1533 # define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
1538 # define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
1540 # define S_ISBLK(m) (0)
1545 # define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
1550 # define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
1552 # define S_ISFIFO(m) (0)
1558 # define S_ISLNK(m) _S_ISLNK(m)
1559 # elif defined(_S_IFLNK)
1560 # define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
1561 # elif defined(S_IFLNK)
1562 # define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
1564 # define S_ISLNK(m) (0)
1570 # define S_ISSOCK(m) _S_ISSOCK(m)
1571 # elif defined(_S_IFSOCK)
1572 # define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
1573 # elif defined(S_IFSOCK)
1574 # define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
1576 # define S_ISSOCK(m) (0)
1582 # define S_IRUSR S_IREAD
1583 # define S_IWUSR S_IWRITE
1584 # define S_IXUSR S_IEXEC
1586 # define S_IRUSR 0400
1587 # define S_IWUSR 0200
1588 # define S_IXUSR 0100
1594 # define S_IRGRP (S_IRUSR>>3)
1595 # define S_IWGRP (S_IWUSR>>3)
1596 # define S_IXGRP (S_IXUSR>>3)
1598 # define S_IRGRP 0040
1599 # define S_IWGRP 0020
1600 # define S_IXGRP 0010
1606 # define S_IROTH (S_IRUSR>>6)
1607 # define S_IWOTH (S_IWUSR>>6)
1608 # define S_IXOTH (S_IXUSR>>6)
1610 # define S_IROTH 0040
1611 # define S_IWOTH 0020
1612 # define S_IXOTH 0010
1617 # define S_ISUID 04000
1621 # define S_ISGID 02000
1625 # define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
1629 # define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
1633 # define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
1636 /* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h>
1637 * which would get included through <sys/file.h >, but that is 3000
1638 * lines in the future. --jhi */
1640 #if !defined(S_IREAD) && !defined(__HAIKU__)
1641 # define S_IREAD S_IRUSR
1644 #if !defined(S_IWRITE) && !defined(__HAIKU__)
1645 # define S_IWRITE S_IWUSR
1649 # define S_IEXEC S_IXUSR
1652 #if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
1653 # define SLOPPYDIVIDE
1660 /* This used to be conditionally defined based on whether we had a sprintf()
1661 * that correctly returns the string length (as required by C89), but we no
1662 * longer need that. XS modules can (and do) use this name, so it must remain
1663 * a part of the API that's visible to modules.
1665 =head1 Miscellaneous Functions
1667 =for apidoc ATmD|int|my_sprintf|NN char *buffer|NN const char *pat|...
1669 Do NOT use this due to the possibility of overflowing C<buffer>. Instead use
1674 #define my_sprintf sprintf
1677 * If we have v?snprintf() and the C99 variadic macros, we can just
1678 * use just the v?snprintf(). It is nice to try to trap the buffer
1679 * overflow, however, so if we are DEBUGGING, and we cannot use the
1680 * gcc statement expressions, then use the function wrappers which try
1681 * to trap the overflow. If we can use the gcc statement expressions,
1682 * we can try that even with the version that uses the C99 variadic
1686 /* Note that we do not check against snprintf()/vsnprintf() returning
1687 * negative values because that is non-standard behaviour and we use
1688 * snprintf/vsnprintf only iff HAS_VSNPRINTF has been defined, and
1689 * that should be true only if the snprintf()/vsnprintf() are true
1690 * to the standard. */
1692 #define PERL_SNPRINTF_CHECK(len, max, api) STMT_START { if ((max) > 0 && (Size_t)len > (max)) Perl_croak_nocontext("panic: %s buffer overflow", STRINGIFY(api)); } STMT_END
1695 # define my_snprintf Perl_my_snprintf
1696 # define PERL_MY_SNPRINTF_GUARDED
1697 #elif defined(HAS_SNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
1698 # ifdef PERL_USE_GCC_BRACE_GROUPS
1699 # define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; })
1700 # define PERL_MY_SNPRINTF_GUARDED
1702 # define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__)
1705 # define my_snprintf Perl_my_snprintf
1706 # define PERL_MY_SNPRINTF_GUARDED
1709 /* There is no quadmath_vsnprintf, and therefore my_vsnprintf()
1710 * dies if called under USE_QUADMATH. */
1711 #if defined(HAS_VSNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
1712 # ifdef PERL_USE_GCC_BRACE_GROUPS
1713 # define my_vsnprintf(buffer, max, ...) ({ int len = vsnprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, vsnprintf); len; })
1714 # define PERL_MY_VSNPRINTF_GUARDED
1716 # define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__)
1719 # define my_vsnprintf Perl_my_vsnprintf
1720 # define PERL_MY_VSNPRINTF_GUARDED
1723 /* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD()
1724 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore
1725 * the result of my_snprintf() or my_vsnprintf(). (No, you should not
1726 * completely ignore it: otherwise you cannot know whether your output
1729 * int len = my_sprintf(buf, max, ...);
1730 * PERL_MY_SNPRINTF_POST_GUARD(len, max);
1732 * The trick is that in certain platforms [a] the my_sprintf() already
1733 * contains the sanity check, while in certain platforms [b] it needs
1734 * to be done as a separate step. The POST_GUARD is that step-- in [a]
1735 * platforms the POST_GUARD actually does nothing since the check has
1736 * already been done. Watch out for the max being the same in both calls.
1738 * If you actually use the snprintf/vsnprintf return value already,
1739 * you assumedly are checking its validity somehow. But you can
1740 * insert the POST_GUARD() also in that case. */
1742 #ifndef PERL_MY_SNPRINTF_GUARDED
1743 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf)
1745 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1748 #ifndef PERL_MY_VSNPRINTF_GUARDED
1749 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf)
1751 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1755 # define my_strlcat strlcat
1758 #if defined(PERL_CORE) || defined(PERL_EXT)
1760 # define my_memrchr memrchr
1762 # define my_memrchr S_my_memrchr
1767 # define my_strlcpy strlcpy
1771 # define my_strnlen strnlen
1775 The IV type is supposed to be long enough to hold any integral
1777 --Andy Dougherty August 1996
1783 #if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
1784 # if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
1785 # define IV_MAX INT64_MAX
1786 # define IV_MIN INT64_MIN
1787 # define UV_MAX UINT64_MAX
1789 # define UINT64_MIN 0
1791 # define UV_MIN UINT64_MIN
1793 # define IV_MAX PERL_QUAD_MAX
1794 # define IV_MIN PERL_QUAD_MIN
1795 # define UV_MAX PERL_UQUAD_MAX
1796 # define UV_MIN PERL_UQUAD_MIN
1801 # if defined(INT32_MAX) && IVSIZE == 4
1802 # define IV_MAX INT32_MAX
1803 # define IV_MIN INT32_MIN
1804 # ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
1805 # define UV_MAX UINT32_MAX
1807 # define UV_MAX 4294967295U
1810 # define UINT32_MIN 0
1812 # define UV_MIN UINT32_MIN
1814 # define IV_MAX PERL_LONG_MAX
1815 # define IV_MIN PERL_LONG_MIN
1816 # define UV_MAX PERL_ULONG_MAX
1817 # define UV_MIN PERL_ULONG_MIN
1828 #if !defined(PERL_CORE)
1829 /* We think that removing this decade-old undef this will cause too much
1830 breakage on CPAN for too little gain. (See RT #119753)
1831 However, we do need HAS_QUAD in the core for use by the drand48 code. */
1837 #define Size_t_MAX (~(Size_t)0)
1838 #define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1)
1840 #define IV_DIG (BIT_DIGITS(IVSIZE * 8))
1841 #define UV_DIG (BIT_DIGITS(UVSIZE * 8))
1843 #ifndef NO_PERL_PRESERVE_IVUV
1844 #define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */
1848 * The macros INT2PTR and NUM2PTR are (despite their names)
1849 * bi-directional: they will convert int/float to or from pointers.
1850 * However the conversion to int/float are named explicitly:
1851 * PTR2IV, PTR2UV, PTR2NV.
1853 * For int conversions we do not need two casts if pointers are
1854 * the same size as IV and UV. Otherwise we need an explicit
1855 * cast (PTRV) to avoid compiler warnings.
1857 #if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
1859 # define INT2PTR(any,d) (any)(d)
1860 #elif PTRSIZE == LONGSIZE
1861 # define PTRV unsigned long
1862 # define PTR2ul(p) (unsigned long)(p)
1864 # define PTRV unsigned
1868 # define INT2PTR(any,d) (any)(PTRV)(d)
1872 # define PTR2ul(p) INT2PTR(unsigned long,p)
1875 #define NUM2PTR(any,d) (any)(PTRV)(d)
1876 #define PTR2IV(p) INT2PTR(IV,p)
1877 #define PTR2UV(p) INT2PTR(UV,p)
1878 #define PTR2NV(p) NUM2PTR(NV,p)
1879 #define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */
1881 /* According to strict ANSI C89 one cannot freely cast between
1882 * data pointers and function (code) pointers. There are at least
1883 * two ways around this. One (used below) is to do two casts,
1884 * first the other pointer to an (unsigned) integer, and then
1885 * the integer to the other pointer. The other way would be
1886 * to use unions to "overlay" the pointers. For an example of
1887 * the latter technique, see union dirpu in struct xpvio in sv.h.
1888 * The only feasible use is probably temporarily storing
1889 * function pointers in a data pointer (such as a void pointer). */
1891 #define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */
1892 #define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */
1894 #ifdef USE_LONG_DOUBLE
1895 # if LONG_DOUBLESIZE == DOUBLESIZE
1896 # define LONG_DOUBLE_EQUALS_DOUBLE
1897 # undef USE_LONG_DOUBLE /* Ouch! */
1901 /* The following is all to get LDBL_DIG, in order to pick a nice
1902 default value for printing floating point numbers in Gconvert.
1905 #ifndef HAS_LDBL_DIG
1906 # if LONG_DOUBLESIZE == 10
1907 # define LDBL_DIG 18 /* assume IEEE */
1908 # elif LONG_DOUBLESIZE == 12
1909 # define LDBL_DIG 18 /* gcc? */
1910 # elif LONG_DOUBLESIZE == 16
1911 # define LDBL_DIG 33 /* assume IEEE */
1912 # elif LONG_DOUBLESIZE == DOUBLESIZE
1913 # define LDBL_DIG DBL_DIG /* bummer */
1920 # include <ieeefp.h>
1923 #if defined(__DECC) && defined(__osf__)
1924 /* Also Tru64 cc has broken NaN comparisons. */
1925 # define NAN_COMPARE_BROKEN
1928 # define NAN_COMPARE_BROKEN
1931 #ifdef USE_LONG_DOUBLE
1933 # include <sunmath.h>
1935 # if defined(LDBL_DIG)
1936 # define NV_DIG LDBL_DIG
1937 # ifdef LDBL_MANT_DIG
1938 # define NV_MANT_DIG LDBL_MANT_DIG
1941 # define NV_MIN LDBL_MIN
1944 # define NV_MAX LDBL_MAX
1946 # ifdef LDBL_MIN_EXP
1947 # define NV_MIN_EXP LDBL_MIN_EXP
1949 # ifdef LDBL_MAX_EXP
1950 # define NV_MAX_EXP LDBL_MAX_EXP
1952 # ifdef LDBL_MIN_10_EXP
1953 # define NV_MIN_10_EXP LDBL_MIN_10_EXP
1955 # ifdef LDBL_MAX_10_EXP
1956 # define NV_MAX_10_EXP LDBL_MAX_10_EXP
1958 # ifdef LDBL_EPSILON
1959 # define NV_EPSILON LDBL_EPSILON
1962 # define NV_MAX LDBL_MAX
1963 /* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */
1964 # elif defined(HUGE_VALL)
1965 # define NV_MAX HUGE_VALL
1968 # if defined(HAS_SQRTL)
1969 # define Perl_acos acosl
1970 # define Perl_asin asinl
1971 # define Perl_atan atanl
1972 # define Perl_atan2 atan2l
1973 # define Perl_ceil ceill
1974 # define Perl_cos cosl
1975 # define Perl_cosh coshl
1976 # define Perl_exp expl
1977 /* no Perl_fabs, but there's PERL_ABS */
1978 # define Perl_floor floorl
1979 # define Perl_fmod fmodl
1980 # define Perl_log logl
1981 # define Perl_log10 log10l
1982 # define Perl_pow powl
1983 # define Perl_sin sinl
1984 # define Perl_sinh sinhl
1985 # define Perl_sqrt sqrtl
1986 # define Perl_tan tanl
1987 # define Perl_tanh tanhl
1989 /* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */
1992 # define Perl_modf(x,y) modfl(x,y)
1993 /* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no
1994 prototype in <math.h> */
1995 # ifndef HAS_MODFL_PROTO
1996 EXTERN_C long double modfl(long double, long double *);
1998 # elif (defined(HAS_TRUNCL) || defined(HAS_AINTL)) && defined(HAS_COPYSIGNL)
1999 extern long double Perl_my_modfl(long double x, long double *ip);
2000 # define Perl_modf(x,y) Perl_my_modfl(x,y)
2005 # define Perl_frexp(x,y) frexpl(x,y)
2006 # elif defined(HAS_ILOGBL) && defined(HAS_SCALBNL)
2007 extern long double Perl_my_frexpl(long double x, int *e);
2008 # define Perl_frexp(x,y) Perl_my_frexpl(x,y)
2013 # define Perl_ldexp(x, y) ldexpl(x,y)
2014 # elif defined(HAS_SCALBNL) && FLT_RADIX == 2
2015 # define Perl_ldexp(x,y) scalbnl(x,y)
2019 # if defined(HAS_ISNANL) && !(defined(isnan) && defined(HAS_C99))
2020 # define Perl_isnan(x) isnanl(x)
2021 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2022 # define Perl_isnan(x) isnan(x)
2026 # if defined(HAS_ISINFL) && !(defined(isinf) && defined(HAS_C99))
2027 # define Perl_isinf(x) isinfl(x)
2028 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2029 # define Perl_isinf(x) isinf(x)
2030 # elif defined(LDBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2031 # define Perl_isinf(x) ((x) > LDBL_MAX || (x) < -LDBL_MAX)
2034 # ifndef Perl_isfinite
2035 # define Perl_isfinite(x) Perl_isfinitel(x)
2037 #elif defined(USE_QUADMATH) && defined(I_QUADMATH)
2038 # include <quadmath.h>
2039 # define NV_DIG FLT128_DIG
2040 # define NV_MANT_DIG FLT128_MANT_DIG
2041 # define NV_MIN FLT128_MIN
2042 # define NV_MAX FLT128_MAX
2043 # define NV_MIN_EXP FLT128_MIN_EXP
2044 # define NV_MAX_EXP FLT128_MAX_EXP
2045 # define NV_EPSILON FLT128_EPSILON
2046 # define NV_MIN_10_EXP FLT128_MIN_10_EXP
2047 # define NV_MAX_10_EXP FLT128_MAX_10_EXP
2048 # define Perl_acos acosq
2049 # define Perl_asin asinq
2050 # define Perl_atan atanq
2051 # define Perl_atan2 atan2q
2052 # define Perl_ceil ceilq
2053 # define Perl_cos cosq
2054 # define Perl_cosh coshq
2055 # define Perl_exp expq
2056 /* no Perl_fabs, but there's PERL_ABS */
2057 # define Perl_floor floorq
2058 # define Perl_fmod fmodq
2059 # define Perl_log logq
2060 # define Perl_log10 log10q
2061 # define Perl_signbit signbitq
2062 # define Perl_pow powq
2063 # define Perl_sin sinq
2064 # define Perl_sinh sinhq
2065 # define Perl_sqrt sqrtq
2066 # define Perl_tan tanq
2067 # define Perl_tanh tanhq
2068 # define Perl_modf(x,y) modfq(x,y)
2069 # define Perl_frexp(x,y) frexpq(x,y)
2070 # define Perl_ldexp(x, y) ldexpq(x,y)
2071 # define Perl_isinf(x) isinfq(x)
2072 # define Perl_isnan(x) isnanq(x)
2073 # define Perl_isfinite(x) !(isnanq(x) || isinfq(x))
2074 # define Perl_fp_class(x) ((x) == 0.0Q ? 0 : isinfq(x) ? 3 : isnanq(x) ? 4 : PERL_ABS(x) < FLT128_MIN ? 2 : 1)
2075 # define Perl_fp_class_inf(x) (Perl_fp_class(x) == 3)
2076 # define Perl_fp_class_nan(x) (Perl_fp_class(x) == 4)
2077 # define Perl_fp_class_norm(x) (Perl_fp_class(x) == 1)
2078 # define Perl_fp_class_denorm(x) (Perl_fp_class(x) == 2)
2079 # define Perl_fp_class_zero(x) (Perl_fp_class(x) == 0)
2081 # define NV_DIG DBL_DIG
2082 # define NV_MANT_DIG DBL_MANT_DIG
2083 # define NV_MIN DBL_MIN
2084 # define NV_MAX DBL_MAX
2085 # define NV_MIN_EXP DBL_MIN_EXP
2086 # define NV_MAX_EXP DBL_MAX_EXP
2087 # define NV_MIN_10_EXP DBL_MIN_10_EXP
2088 # define NV_MAX_10_EXP DBL_MAX_10_EXP
2089 # define NV_EPSILON DBL_EPSILON
2090 # define NV_MAX DBL_MAX
2091 # define NV_MIN DBL_MIN
2093 /* These math interfaces are C89. */
2094 # define Perl_acos acos
2095 # define Perl_asin asin
2096 # define Perl_atan atan
2097 # define Perl_atan2 atan2
2098 # define Perl_ceil ceil
2099 # define Perl_cos cos
2100 # define Perl_cosh cosh
2101 # define Perl_exp exp
2102 /* no Perl_fabs, but there's PERL_ABS */
2103 # define Perl_floor floor
2104 # define Perl_fmod fmod
2105 # define Perl_log log
2106 # define Perl_log10 log10
2107 # define Perl_pow pow
2108 # define Perl_sin sin
2109 # define Perl_sinh sinh
2110 # define Perl_sqrt sqrt
2111 # define Perl_tan tan
2112 # define Perl_tanh tanh
2114 # define Perl_modf(x,y) modf(x,y)
2115 # define Perl_frexp(x,y) frexp(x,y)
2116 # define Perl_ldexp(x,y) ldexp(x,y)
2120 # define Perl_isnan(x) isnan(x)
2124 # if defined(HAS_ISINF)
2125 # define Perl_isinf(x) isinf(x)
2126 # elif defined(DBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2127 # define Perl_isinf(x) ((x) > DBL_MAX || (x) < -DBL_MAX)
2130 # ifndef Perl_isfinite
2131 # ifdef HAS_ISFINITE
2132 # define Perl_isfinite(x) isfinite(x)
2133 # elif defined(HAS_FINITE)
2134 # define Perl_isfinite(x) finite(x)
2139 /* fpclassify(): C99. It is supposed to be a macro that switches on
2140 * the sizeof() of its argument, so there's no need for e.g. fpclassifyl().*/
2141 #if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
2143 # if defined(FP_INFINITE) && defined(FP_NAN)
2144 # define Perl_fp_class(x) fpclassify(x)
2145 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2146 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2147 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2148 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2149 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2150 # elif defined(FP_PLUS_INF) && defined(FP_QNAN)
2151 /* Some versions of HP-UX (10.20) have (only) fpclassify() but which is
2152 * actually not the C99 fpclassify, with its own set of return defines. */
2153 # define Perl_fp_class(x) fpclassify(x)
2154 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2155 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2156 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2157 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2158 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2159 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2160 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2161 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2162 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2163 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2165 # undef Perl_fp_class /* Unknown set of defines */
2169 /* fp_classify(): Legacy: VMS, maybe Unicos? The values, however,
2170 * are identical to the C99 fpclassify(). */
2171 #if !defined(Perl_fp_class) && defined(HAS_FP_CLASSIFY)
2174 /* FP_INFINITE and others are here rather than in math.h as C99 stipulates */
2176 /* oh, and the isnormal macro has a typo in it! */
2178 # define isnormal(x) Perl_fp_class_norm(x)
2180 # if defined(FP_INFINITE) && defined(FP_NAN)
2181 # define Perl_fp_class(x) fp_classify(x)
2182 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2183 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2184 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2185 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2186 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2188 # undef Perl_fp_class /* Unknown set of defines */
2192 /* Feel free to check with me for the SGI manpages, SGI testing,
2193 * etcetera, if you want to try getting this to work with IRIX.
2195 * - Allen <allens@cpan.org> */
2197 /* fpclass(): SysV, at least Solaris and some versions of IRIX. */
2198 #if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
2199 /* Solaris and IRIX have fpclass/fpclassl, but they are using
2200 * an enum typedef, not cpp symbols, and Configure doesn't detect that.
2201 * Define some symbols also as cpp symbols so we can detect them. */
2202 # if defined(__sun) || defined(__sgi) /* XXX Configure test instead */
2203 # define FP_PINF FP_PINF
2204 # define FP_QNAN FP_QNAN
2208 # include <ieeefp.h>
2213 # if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
2214 # define Perl_fp_class(x) fpclassl(x)
2216 # define Perl_fp_class(x) fpclass(x)
2218 # if defined(FP_CLASS_PINF) && defined(FP_CLASS_SNAN)
2219 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
2220 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
2221 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
2222 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
2223 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
2224 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
2225 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
2226 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
2227 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
2228 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
2229 # elif defined(FP_PINF) && defined(FP_QNAN)
2230 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2231 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2232 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NINF)
2233 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PINF)
2234 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NNORM)
2235 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PNORM)
2236 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NDENORM)
2237 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PDENORM)
2238 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NZERO)
2239 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PZERO)
2241 # undef Perl_fp_class /* Unknown set of defines */
2245 /* fp_class(): Legacy: at least Tru64, some versions of IRIX. */
2246 #if !defined(Perl_fp_class) && (defined(HAS_FP_CLASS)||defined(HAS_FP_CLASSL))
2248 # if !defined(FP_SNAN) && defined(I_FP_CLASS)
2249 # include <fp_class.h>
2251 # if defined(FP_POS_INF) && defined(FP_QNAN)
2252 # ifdef __sgi /* XXX Configure test instead */
2253 # ifdef USE_LONG_DOUBLE
2254 # define Perl_fp_class(x) fp_class_l(x)
2256 # define Perl_fp_class(x) fp_class_d(x)
2259 # if defined(USE_LONG_DOUBLE) && defined(HAS_FP_CLASSL)
2260 # define Perl_fp_class(x) fp_classl(x)
2262 # define Perl_fp_class(x) fp_class(x)
2265 # if defined(FP_POS_INF) && defined(FP_QNAN)
2266 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2267 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2268 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NEG_INF)
2269 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_POS_INF)
2270 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NEG_NORM)
2271 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_POS_NORM)
2272 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NEG_DENORM)
2273 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_POS_DENORM)
2274 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NEG_ZERO)
2275 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_POS_ZERO)
2277 # undef Perl_fp_class /* Unknown set of defines */
2282 /* class(), _class(): Legacy: AIX. */
2283 #if !defined(Perl_fp_class) && defined(HAS_CLASS)
2285 # if defined(FP_PLUS_NORM) && defined(FP_PLUS_INF)
2287 # define Perl_fp_class(x) class(x)
2289 # define Perl_fp_class(x) _class(x)
2291 # if defined(FP_PLUS_INF) && defined(FP_NANQ)
2292 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
2293 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
2294 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2295 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2296 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2297 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2298 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2299 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2300 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2301 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2303 # undef Perl_fp_class /* Unknown set of defines */
2308 /* Win32: _fpclass(), _isnan(), _finite(). */
2311 # define Perl_isnan(x) _isnan(x)
2313 # ifndef Perl_isfinite
2314 # define Perl_isfinite(x) _finite(x)
2316 # ifndef Perl_fp_class_snan
2317 /* No simple way to #define Perl_fp_class because _fpclass()
2318 * returns a set of bits. */
2319 # define Perl_fp_class_snan(x) (_fpclass(x) & _FPCLASS_SNAN)
2320 # define Perl_fp_class_qnan(x) (_fpclass(x) & _FPCLASS_QNAN)
2321 # define Perl_fp_class_nan(x) (_fpclass(x) & (_FPCLASS_SNAN|_FPCLASS_QNAN))
2322 # define Perl_fp_class_ninf(x) (_fpclass(x) & _FPCLASS_NINF))
2323 # define Perl_fp_class_pinf(x) (_fpclass(x) & _FPCLASS_PINF))
2324 # define Perl_fp_class_inf(x) (_fpclass(x) & (_FPCLASS_NINF|_FPCLASS_PINF))
2325 # define Perl_fp_class_nnorm(x) (_fpclass(x) & _FPCLASS_NN)
2326 # define Perl_fp_class_pnorm(x) (_fpclass(x) & _FPCLASS_PN)
2327 # define Perl_fp_class_norm(x) (_fpclass(x) & (_FPCLASS_NN|_FPCLASS_PN))
2328 # define Perl_fp_class_ndenorm(x) (_fpclass(x) & _FPCLASS_ND)
2329 # define Perl_fp_class_pdenorm(x) (_fpclass(x) & _FPCLASS_PD)
2330 # define Perl_fp_class_denorm(x) (_fpclass(x) & (_FPCLASS_ND|_FPCLASS_PD))
2331 # define Perl_fp_class_nzero(x) (_fpclass(x) & _FPCLASS_NZ)
2332 # define Perl_fp_class_pzero(x) (_fpclass(x) & _FPCLASS_PZ)
2333 # define Perl_fp_class_zero(x) (_fpclass(x) & (_FPCLASS_NZ|_FPCLASS_PZ))
2337 #if !defined(Perl_fp_class_inf) && \
2338 defined(Perl_fp_class_pinf) && defined(Perl_fp_class_ninf)
2339 # define Perl_fp_class_inf(x) \
2340 (Perl_fp_class_pinf(x) || Perl_fp_class_ninf(x))
2343 #if !defined(Perl_fp_class_nan) && \
2344 defined(Perl_fp_class_snan) && defined(Perl_fp_class_qnan)
2345 # define Perl_fp_class_nan(x) \
2346 (Perl_fp_class_snan(x) || Perl_fp_class_qnan(x))
2349 #if !defined(Perl_fp_class_zero) && \
2350 defined(Perl_fp_class_pzero) && defined(Perl_fp_class_nzero)
2351 # define Perl_fp_class_zero(x) \
2352 (Perl_fp_class_pzero(x) || Perl_fp_class_nzero(x))
2355 #if !defined(Perl_fp_class_norm) && \
2356 defined(Perl_fp_class_pnorm) && defined(Perl_fp_class_nnorm)
2357 # define Perl_fp_class_norm(x) \
2358 (Perl_fp_class_pnorm(x) || Perl_fp_class_nnorm(x))
2361 #if !defined(Perl_fp_class_denorm) && \
2362 defined(Perl_fp_class_pdenorm) && defined(Perl_fp_class_ndenorm)
2363 # define Perl_fp_class_denorm(x) \
2364 (Perl_fp_class_pdenorm(x) || Perl_fp_class_ndenorm(x))
2368 # ifdef Perl_fp_class_nan
2369 # define Perl_isnan(x) Perl_fp_class_nan(x)
2370 # elif defined(HAS_UNORDERED)
2371 # define Perl_isnan(x) unordered((x), 0.0)
2373 # define Perl_isnan(x) ((x)!=(x))
2378 # ifdef Perl_fp_class_inf
2379 # define Perl_isinf(x) Perl_fp_class_inf(x)
2383 #ifndef Perl_isfinite
2384 # if defined(HAS_ISFINITE) && !defined(isfinite)
2385 # define Perl_isfinite(x) isfinite((double)(x))
2386 # elif defined(HAS_FINITE)
2387 # define Perl_isfinite(x) finite((double)(x))
2388 # elif defined(Perl_fp_class_finite)
2389 # define Perl_isfinite(x) Perl_fp_class_finite(x)
2391 /* For the infinities the multiplication returns nan,
2392 * for the nan the multiplication also returns nan,
2393 * for everything else (that is, finite) zero should be returned. */
2394 # define Perl_isfinite(x) (((x) * 0) == 0)
2399 # if defined(Perl_isfinite) && defined(Perl_isnan)
2400 # define Perl_isinf(x) !(Perl_isfinite(x)||Perl_isnan(x))
2404 /* We need Perl_isfinitel (ends with ell) (if available) even when
2405 * not USE_LONG_DOUBLE because the printf code (sv_catpvfn_flags)
2407 #if defined(HAS_LONG_DOUBLE) && !defined(Perl_isfinitel)
2408 /* If isfinite() is a macro and looks like we have C99,
2409 * we assume it's the type-aware C99 isfinite(). */
2410 # if defined(HAS_ISFINITE) && defined(isfinite) && defined(HAS_C99)
2411 # define Perl_isfinitel(x) isfinite(x)
2412 # elif defined(HAS_ISFINITEL)
2413 # define Perl_isfinitel(x) isfinitel(x)
2414 # elif defined(HAS_FINITEL)
2415 # define Perl_isfinitel(x) finitel(x)
2416 # elif defined(HAS_INFL) && defined(HAS_NANL)
2417 # define Perl_isfinitel(x) !(isinfl(x)||isnanl(x))
2419 # define Perl_isfinitel(x) ((x) * 0 == 0) /* See Perl_isfinite. */
2423 /* The default is to use Perl's own atof() implementation (in numeric.c).
2424 * Usually that is the one to use but for some platforms (e.g. UNICOS)
2425 * it is however best to use the native implementation of atof.
2426 * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
2427 * Some good tests to try out with either setting are t/base/num.t,
2428 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles
2429 * you may need to be using a different function than atof! */
2431 #ifndef USE_PERL_ATOF
2433 # define USE_PERL_ATOF
2436 # if USE_PERL_ATOF == 0
2437 # undef USE_PERL_ATOF
2441 #ifdef USE_PERL_ATOF
2442 # define Perl_atof(s) Perl_my_atof(s)
2443 # define Perl_atof2(s, n) Perl_my_atof3(aTHX_ (s), &(n), 0)
2445 # define Perl_atof(s) (NV)atof(s)
2446 # define Perl_atof2(s, n) ((n) = atof(s))
2448 #define my_atof2(a,b) my_atof3(a,b,0)
2451 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
2452 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
2453 * depending on local options. Until Configure detects this (or at least
2454 * detects whether the "signed" keyword is available) the CHAR ranges
2455 * will not be included. UCHAR functions normally.
2459 #define PERL_UCHAR_MIN ((unsigned char)0)
2460 #define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
2462 #define PERL_USHORT_MIN ((unsigned short)0)
2463 #define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
2465 #define PERL_SHORT_MAX ((short)SHRT_MAX)
2466 #define PERL_SHORT_MIN ((short)SHRT_MIN)
2468 #define PERL_UINT_MAX ((unsigned int)UINT_MAX)
2469 #define PERL_UINT_MIN ((unsigned int)0)
2471 #define PERL_INT_MAX ((int)INT_MAX)
2472 #define PERL_INT_MIN ((int)INT_MIN)
2474 #define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
2475 #define PERL_ULONG_MIN ((unsigned long)0L)
2477 #define PERL_LONG_MAX ((long)LONG_MAX)
2478 #define PERL_LONG_MIN ((long)LONG_MIN)
2481 # define PERL_UQUAD_MAX (~(UV)0)
2482 # define PERL_UQUAD_MIN ((UV)0)
2483 # define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
2484 # define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
2488 =head1 Numeric functions
2490 =for apidoc AmnUh||PERL_INT_MIN
2491 =for apidoc AmnUh||PERL_LONG_MAX
2492 =for apidoc AmnUh||PERL_LONG_MIN
2493 =for apidoc AmnUh||PERL_QUAD_MAX
2494 =for apidoc AmnUh||PERL_SHORT_MAX
2495 =for apidoc AmnUh||PERL_SHORT_MIN
2496 =for apidoc AmnUh||PERL_UCHAR_MAX
2497 =for apidoc AmnUh||PERL_UCHAR_MIN
2498 =for apidoc AmnUh||PERL_UINT_MAX
2499 =for apidoc AmnUh||PERL_ULONG_MAX
2500 =for apidoc AmnUh||PERL_ULONG_MIN
2501 =for apidoc AmnUh||PERL_UQUAD_MAX
2502 =for apidoc AmnUh||PERL_UQUAD_MIN
2503 =for apidoc AmnUh||PERL_USHORT_MAX
2504 =for apidoc AmnUh||PERL_USHORT_MIN
2505 =for apidoc AmnUh||PERL_QUAD_MIN
2506 =for apidoc AmnU||PERL_INT_MAX
2524 give the largest and smallest number representable in the current
2525 platform in variables of the corresponding types.
2527 For signed types, the smallest representable number is the most negative
2528 number, the one furthest away from zero.
2530 For C99 and later compilers, these correspond to things like C<INT_MAX>, which
2531 are available to the C code. But these constants, furnished by Perl,
2532 allow code compiled on earlier compilers to portably have access to the same
2539 typedef MEM_SIZE STRLEN;
2541 typedef struct op OP;
2542 typedef struct cop COP;
2543 typedef struct unop UNOP;
2544 typedef struct unop_aux UNOP_AUX;
2545 typedef struct binop BINOP;
2546 typedef struct listop LISTOP;
2547 typedef struct logop LOGOP;
2548 typedef struct pmop PMOP;
2549 typedef struct svop SVOP;
2550 typedef struct padop PADOP;
2551 typedef struct pvop PVOP;
2552 typedef struct loop LOOP;
2553 typedef struct methop METHOP;
2556 typedef struct opslab OPSLAB;
2557 typedef struct opslot OPSLOT;
2560 typedef struct block_hooks BHK;
2561 typedef struct custom_op XOP;
2563 typedef struct interpreter PerlInterpreter;
2565 /* SGI's <sys/sema.h> has struct sv */
2567 # define STRUCT_SV perl_sv
2569 # define STRUCT_SV sv
2571 typedef struct STRUCT_SV SV;
2572 typedef struct av AV;
2573 typedef struct hv HV;
2574 typedef struct cv CV;
2575 typedef struct p5rx REGEXP;
2576 typedef struct gp GP;
2577 typedef struct gv GV;
2578 typedef struct io IO;
2579 typedef struct context PERL_CONTEXT;
2580 typedef struct block BLOCK;
2582 typedef struct magic MAGIC;
2583 typedef struct xpv XPV;
2584 typedef struct xpviv XPVIV;
2585 typedef struct xpvuv XPVUV;
2586 typedef struct xpvnv XPVNV;
2587 typedef struct xpvmg XPVMG;
2588 typedef struct xpvlv XPVLV;
2589 typedef struct xpvinvlist XINVLIST;
2590 typedef struct xpvav XPVAV;
2591 typedef struct xpvhv XPVHV;
2592 typedef struct xpvgv XPVGV;
2593 typedef struct xpvcv XPVCV;
2594 typedef struct xpvbm XPVBM;
2595 typedef struct xpvfm XPVFM;
2596 typedef struct xpvio XPVIO;
2597 typedef struct mgvtbl MGVTBL;
2598 typedef union any ANY;
2599 typedef struct ptr_tbl_ent PTR_TBL_ENT_t;
2600 typedef struct ptr_tbl PTR_TBL_t;
2601 typedef struct clone_params CLONE_PARAMS;
2603 /* a pad is currently just an AV; but that might change,
2604 * so hide the type. */
2605 typedef struct padlist PADLIST;
2607 typedef struct padnamelist PADNAMELIST;
2608 typedef struct padname PADNAME;
2610 /* always enable PERL_OP_PARENT */
2611 #if !defined(PERL_OP_PARENT)
2612 # define PERL_OP_PARENT
2615 /* enable PERL_COPY_ON_WRITE by default */
2616 #if !defined(PERL_COPY_ON_WRITE) && !defined(PERL_NO_COW)
2617 # define PERL_COPY_ON_WRITE
2620 #ifdef PERL_COPY_ON_WRITE
2621 # define PERL_ANY_COW
2623 # define PERL_SAWAMPERSAND
2626 #if defined(PERL_DEBUG_READONLY_OPS) && !defined(USE_ITHREADS)
2627 # error PERL_DEBUG_READONLY_OPS only works with ithreads
2631 #include "charclass_invlists.h"
2633 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO)
2634 # if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO)
2635 # define USE_64_BIT_RAWIO /* implicit */
2639 /* Notice the use of HAS_FSEEKO: now we are obligated to always use
2640 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself,
2641 * however, because operating systems like to do that themself. */
2644 # define FSEEKSIZE LSEEKSIZE
2646 # define FSEEKSIZE LONGSIZE
2650 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO)
2651 # if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO)
2652 # define USE_64_BIT_STDIO /* implicit */
2656 #ifdef USE_64_BIT_RAWIO
2659 # define Off_t off64_t
2661 # define LSEEKSIZE 8
2663 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2664 * will trigger defines like the ones below. Some 64-bit environments,
2665 * however, do not. Therefore we have to explicitly mix and match. */
2666 # if defined(USE_OPEN64)
2667 # define open open64
2669 # if defined(USE_LSEEK64)
2670 # define lseek lseek64
2672 # if defined(USE_LLSEEK)
2673 # define lseek llseek
2676 # if defined(USE_STAT64)
2677 # define stat stat64
2679 # if defined(USE_FSTAT64)
2680 # define fstat fstat64
2682 # if defined(USE_LSTAT64)
2683 # define lstat lstat64
2685 # if defined(USE_FLOCK64)
2686 # define flock flock64
2688 # if defined(USE_LOCKF64)
2689 # define lockf lockf64
2691 # if defined(USE_FCNTL64)
2692 # define fcntl fcntl64
2694 # if defined(USE_TRUNCATE64)
2695 # define truncate truncate64
2697 # if defined(USE_FTRUNCATE64)
2698 # define ftruncate ftruncate64
2702 #ifdef USE_64_BIT_STDIO
2703 # ifdef HAS_FPOS64_T
2705 # define Fpos_t fpos64_t
2707 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2708 * will trigger defines like the ones below. Some 64-bit environments,
2709 * however, do not. */
2710 # if defined(USE_FOPEN64)
2711 # define fopen fopen64
2713 # if defined(USE_FSEEK64)
2714 # define fseek fseek64 /* don't do fseeko here, see perlio.c */
2716 # if defined(USE_FTELL64)
2717 # define ftell ftell64 /* don't do ftello here, see perlio.c */
2719 # if defined(USE_FSETPOS64)
2720 # define fsetpos fsetpos64
2722 # if defined(USE_FGETPOS64)
2723 # define fgetpos fgetpos64
2725 # if defined(USE_TMPFILE64)
2726 # define tmpfile tmpfile64
2728 # if defined(USE_FREOPEN64)
2729 # define freopen freopen64
2734 # include "iperlsys.h"
2739 # include "os2ish.h"
2741 # include "dosish.h"
2744 # include "vmsish.h"
2745 #elif defined(PLAN9)
2746 # include "./plan9/plan9ish.h"
2747 #elif defined(__VOS__)
2749 # include "./vos/vosish.h"
2751 # include "vos/vosish.h"
2753 #elif defined(__SYMBIAN32__)
2754 # include "symbian/symbianish.h"
2755 #elif defined(__HAIKU__)
2756 # include "haiku/haikuish.h"
2758 # include "unixish.h"
2762 # include "amigaos.h"
2763 # undef FD_CLOEXEC /* a lie in AmigaOS */
2766 /* NSIG logic from Configure --> */
2769 # define NSIG (_NSIG)
2770 # elif defined(SIGMAX)
2771 # define NSIG (SIGMAX+1)
2772 # elif defined(SIG_MAX)
2773 # define NSIG (SIG_MAX+1)
2774 # elif defined(_SIG_MAX)
2775 # define NSIG (_SIG_MAX+1)
2776 # elif defined(MAXSIG)
2777 # define NSIG (MAXSIG+1)
2778 # elif defined(MAX_SIG)
2779 # define NSIG (MAX_SIG+1)
2780 # elif defined(SIGARRAYSIZE)
2781 # define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
2782 # elif defined(_sys_nsig)
2783 # define NSIG (_sys_nsig) /* Solaris 2.5 */
2785 /* Default to some arbitrary number that's big enough to get most
2786 * of the common signals. */
2790 /* <-- NSIG logic from Configure */
2792 #ifndef NO_ENVIRON_ARRAY
2793 # define USE_ENVIRON_ARRAY
2797 * initialise to avoid floating-point exceptions from overflow, etc
2799 #ifndef PERL_FPU_INIT
2800 # ifdef HAS_FPSETMASK
2801 # if HAS_FLOATINGPOINT_H
2802 # include <floatingpoint.h>
2804 /* Some operating systems have this as a macro, which in turn expands to a comma
2805 expression, and the last sub-expression is something that gets calculated,
2806 and then they have the gall to warn that a value computed is not used. Hence
2808 # define PERL_FPU_INIT (void)fpsetmask(0)
2809 # elif defined(SIGFPE) && defined(SIG_IGN) && !defined(PERL_MICRO)
2810 # define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN)
2811 # define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
2812 # define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
2814 # define PERL_FPU_INIT
2817 #ifndef PERL_FPU_PRE_EXEC
2818 # define PERL_FPU_PRE_EXEC {
2819 # define PERL_FPU_POST_EXEC }
2822 /* In Tru64 the cc -ieee enables the IEEE math but disables traps.
2823 * We need to reenable the "invalid" trap because otherwise generation
2824 * of NaN values leaves the IEEE fp flags in bad state, leaving any further
2825 * fp ops behaving strangely (Inf + 1 resulting in zero, for example). */
2827 # include <machine/fpu.h>
2828 # define PERL_SYS_FPU_INIT \
2830 ieee_set_fp_control(IEEE_TRAP_ENABLE_INV); \
2831 signal(SIGFPE, SIG_IGN); \
2834 /* In IRIX the default for Flush to Zero bit is true,
2835 * which means that results going below the minimum of normal
2836 * floating points go to zero, instead of going denormal/subnormal.
2837 * This is unlike almost any other system running Perl, so let's clear it.
2838 * [perl #123767] IRIX64 blead (ddce084a) opbasic/arith.t failure, originally
2839 * [perl #120426] small numbers shouldn't round to zero if they have extra floating digits
2841 * XXX The flush-to-zero behaviour should be a Configure scan.
2842 * To change the behaviour usually requires some system-specific
2843 * incantation, though, like the below. */
2845 # include <sys/fpu.h>
2846 # define PERL_SYS_FPU_INIT \
2848 union fpc_csr csr; \
2849 csr.fc_word = get_fpc_csr(); \
2850 csr.fc_struct.flush = 0; \
2851 set_fpc_csr(csr.fc_word); \
2855 #ifndef PERL_SYS_FPU_INIT
2856 # define PERL_SYS_FPU_INIT NOOP
2859 #ifndef PERL_SYS_INIT3_BODY
2860 # define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp)
2864 =head1 Miscellaneous Functions
2866 =for apidoc Am|void|PERL_SYS_INIT|int *argc|char*** argv
2867 Provides system-specific tune up of the C runtime environment necessary to
2868 run Perl interpreters. This should be called only once, before creating
2869 any Perl interpreters.
2871 =for apidoc Am|void|PERL_SYS_INIT3|int *argc|char*** argv|char*** env
2872 Provides system-specific tune up of the C runtime environment necessary to
2873 run Perl interpreters. This should be called only once, before creating
2874 any Perl interpreters.
2876 =for apidoc Am|void|PERL_SYS_TERM|
2877 Provides system-specific clean up of the C runtime environment after
2878 running Perl interpreters. This should be called only once, after
2879 freeing any remaining Perl interpreters.
2884 #define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv)
2885 #define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env)
2886 #define PERL_SYS_TERM() Perl_sys_term()
2888 #ifndef PERL_WRITE_MSG_TO_CONSOLE
2889 # define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len)
2894 # ifdef _POSIX_PATH_MAX
2895 # if PATH_MAX > _POSIX_PATH_MAX
2896 /* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX
2897 * included the null byte or not. Later amendments of POSIX,
2898 * XPG4, the Austin Group, and the Single UNIX Specification
2899 * all explicitly include the null byte in the PATH_MAX.
2900 * Ditto for _POSIX_PATH_MAX. */
2901 # define MAXPATHLEN PATH_MAX
2903 # define MAXPATHLEN _POSIX_PATH_MAX
2906 # define MAXPATHLEN (PATH_MAX+1)
2909 # define MAXPATHLEN 1024 /* Err on the large side. */
2913 /* In case Configure was not used (we are using a "canned config"
2914 * such as Win32, or a cross-compilation setup, for example) try going
2915 * by the gcc major and minor versions. One useful URL is
2916 * http://www.ohse.de/uwe/articles/gcc-attributes.html,
2917 * but contrary to this information warn_unused_result seems
2918 * not to be in gcc 3.3.5, at least. --jhi
2919 * Also, when building extensions with an installed perl, this allows
2920 * the user to upgrade gcc and get the right attributes, rather than
2921 * relying on the list generated at Configure time. --AD
2922 * Set these up now otherwise we get confused when some of the <*thread.h>
2923 * includes below indirectly pull in <perlio.h> (which needs to know if we
2924 * have HASATTRIBUTE_FORMAT).
2928 #if defined __GNUC__ && !defined(__INTEL_COMPILER)
2929 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 1 || __GNUC__ > 3 /* 3.1 -> */
2930 # define HASATTRIBUTE_DEPRECATED
2932 # if __GNUC__ >= 3 /* 3.0 -> */ /* XXX Verify this version */
2933 # define HASATTRIBUTE_FORMAT
2934 # if defined __MINGW32__
2935 # define PRINTF_FORMAT_NULL_OK
2938 # if __GNUC__ >= 3 /* 3.0 -> */
2939 # define HASATTRIBUTE_MALLOC
2941 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 3 || __GNUC__ > 3 /* 3.3 -> */
2942 # define HASATTRIBUTE_NONNULL
2944 # if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 || __GNUC__ > 2 /* 2.5 -> */
2945 # define HASATTRIBUTE_NORETURN
2947 # if __GNUC__ >= 3 /* gcc 3.0 -> */
2948 # define HASATTRIBUTE_PURE
2950 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
2951 # define HASATTRIBUTE_UNUSED
2953 # if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus)
2954 # define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */
2956 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
2957 # define HASATTRIBUTE_WARN_UNUSED_RESULT
2960 #endif /* #ifndef PERL_MICRO */
2962 /* USE_5005THREADS needs to be after unixish.h as <pthread.h> includes
2963 * <sys/signal.h> which defines NSIG - which will stop inclusion of <signal.h>
2964 * this results in many functions being undeclared which bothers C++
2965 * May make sense to have threads after "*ish.h" anyway
2968 /* clang Thread Safety Analysis/Annotations/Attributes
2969 * http://clang.llvm.org/docs/ThreadSafetyAnalysis.html
2971 * Available since clang 3.6-ish (appeared in 3.4, but shaky still in 3.5).
2972 * Apple XCode hijacks __clang_major__ and __clang_minor__
2973 * (6.1 means really clang 3.6), so needs extra hijinks
2974 * (could probably also test the contents of __apple_build_version__).
2976 #if defined(USE_ITHREADS) && defined(I_PTHREAD) && \
2977 defined(__clang__) && \
2978 !defined(PERL_GLOBAL_STRUCT) && \
2979 !defined(PERL_GLOBAL_STRUCT_PRIVATE) && \
2981 ((!defined(__apple_build_version__) && \
2982 ((__clang_major__ == 3 && __clang_minor__ >= 6) || \
2983 (__clang_major__ >= 4))) || \
2984 (defined(__apple_build_version__) && \
2985 ((__clang_major__ == 6 && __clang_minor__ >= 1) || \
2986 (__clang_major__ >= 7))))
2987 # define PERL_TSA__(x) __attribute__((x))
2988 # define PERL_TSA_ACTIVE
2990 # define PERL_TSA__(x) /* No TSA, make TSA attributes no-ops. */
2991 # undef PERL_TSA_ACTIVE
2994 /* PERL_TSA_CAPABILITY() is used to annotate typedefs.
2995 * typedef old_type PERL_TSA_CAPABILITY("mutex") new_type;
2997 #define PERL_TSA_CAPABILITY(x) \
2998 PERL_TSA__(capability(x))
3000 /* In the below examples the mutex must be lexically visible, usually
3001 * either as global variables, or as function arguments. */
3003 /* PERL_TSA_GUARDED_BY() is used to annotate global variables.
3005 * Foo foo PERL_TSA_GUARDED_BY(mutex);
3007 #define PERL_TSA_GUARDED_BY(x) \
3008 PERL_TSA__(guarded_by(x))
3010 /* PERL_TSA_PT_GUARDED_BY() is used to annotate global pointers.
3011 * The data _behind_ the pointer is guarded.
3013 * Foo* ptr PERL_TSA_PT_GUARDED_BY(mutex);
3015 #define PERL_TSA_PT_GUARDED_BY(x) \
3016 PERL_TSA__(pt_guarded_by(x))
3018 /* PERL_TSA_REQUIRES() is used to annotate functions.
3019 * The caller MUST hold the resource when calling the function.
3021 * void Foo() PERL_TSA_REQUIRES(mutex);
3023 #define PERL_TSA_REQUIRES(x) \
3024 PERL_TSA__(requires_capability(x))
3026 /* PERL_TSA_EXCLUDES() is used to annotate functions.
3027 * The caller MUST NOT hold resource when calling the function.
3029 * EXCLUDES should be used when the function first acquires
3030 * the resource and then releases it. Use to avoid deadlock.
3032 * void Foo() PERL_TSA_EXCLUDES(mutex);
3034 #define PERL_TSA_EXCLUDES(x) \
3035 PERL_TSA__(locks_excluded(x))
3037 /* PERL_TSA_ACQUIRE() is used to annotate functions.
3038 * The caller MUST NOT hold the resource when calling the function,
3039 * and the function will acquire the resource.
3041 * void Foo() PERL_TSA_ACQUIRE(mutex);
3043 #define PERL_TSA_ACQUIRE(x) \
3044 PERL_TSA__(acquire_capability(x))
3046 /* PERL_TSA_RELEASE() is used to annotate functions.
3047 * The caller MUST hold the resource when calling the function,
3048 * and the function will release the resource.
3050 * void Foo() PERL_TSA_RELEASE(mutex);
3052 #define PERL_TSA_RELEASE(x) \
3053 PERL_TSA__(release_capability(x))
3055 /* PERL_TSA_NO_TSA is used to annotate functions.
3056 * Used when being intentionally unsafe, or when the code is too
3057 * complicated for the analysis. Use sparingly.
3059 * void Foo() PERL_TSA_NO_TSA;
3061 #define PERL_TSA_NO_TSA \
3062 PERL_TSA__(no_thread_safety_analysis)
3064 /* There are more annotations/attributes available, see the clang
3065 * documentation for details. */
3067 #if defined(USE_ITHREADS)
3069 # include <nw5thread.h>
3070 # elif defined(WIN32)
3071 # include <win32thread.h>
3073 # include "os2thread.h"
3074 # elif defined(I_MACH_CTHREADS)
3075 # include <mach/cthreads.h>
3076 typedef cthread_t perl_os_thread;
3077 typedef mutex_t perl_mutex;
3078 typedef condition_t perl_cond;
3079 typedef void * perl_key;
3080 # elif defined(I_PTHREAD) /* Posix threads */
3081 # include <pthread.h>
3082 typedef pthread_t perl_os_thread;
3083 typedef pthread_mutex_t PERL_TSA_CAPABILITY("mutex") perl_mutex;
3084 typedef pthread_cond_t perl_cond;
3085 typedef pthread_key_t perl_key;
3087 #endif /* USE_ITHREADS */
3089 #ifdef PERL_TSA_ACTIVE
3090 /* Since most pthread mutex interfaces have not been annotated, we
3091 * need to have these wrappers. The NO_TSA annotation is quite ugly
3092 * but it cannot be avoided in plain C, unlike in C++, where one could
3093 * e.g. use ACQUIRE() with no arg on a mutex lock method.
3095 * The bodies of these wrappers are in util.c
3097 * TODO: however, some platforms are starting to get these clang
3098 * thread safety annotations for pthreads, for example FreeBSD.
3099 * Do we need a way to a bypass these wrappers? */
3100 EXTERN_C int perl_tsa_mutex_lock(perl_mutex* mutex)
3101 PERL_TSA_ACQUIRE(*mutex)
3103 EXTERN_C int perl_tsa_mutex_unlock(perl_mutex* mutex)
3104 PERL_TSA_RELEASE(*mutex)
3113 # include "netware.h"
3116 #define STATUS_UNIX PL_statusvalue
3118 # define STATUS_NATIVE PL_statusvalue_vms
3120 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise
3121 * its contents can not be trusted. Unfortunately, Perl seems to check
3122 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should
3125 # include <stsdef.h>
3127 /* Presume this because if VMS changes it, it will require a new
3128 * set of APIs for waiting on children for binary compatibility.
3130 # define child_offset_bits (8)
3131 # ifndef C_FAC_POSIX
3132 # define C_FAC_POSIX 0x35A000
3135 /* STATUS_EXIT - validates and returns a NATIVE exit status code for the
3136 * platform from the existing UNIX or Native status values.
3139 # define STATUS_EXIT \
3140 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \
3141 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0))
3144 /* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child
3145 * exit code and shifts the UNIX value over the correct number of bits to
3146 * be a child status. Usually the number of bits is 8, but that could be
3147 * platform dependent. The NATIVE status code is presumed to have either
3148 * from a child process.
3151 /* This is complicated. The child processes return a true native VMS
3152 status which must be saved. But there is an assumption in Perl that
3153 the UNIX child status has some relationship to errno values, so
3154 Perl tries to translate it to text in some of the tests.
3155 In order to get the string translation correct, for the error, errno
3156 must be EVMSERR, but that generates a different text message
3157 than what the test programs are expecting. So an errno value must
3158 be derived from the native status value when an error occurs.
3159 That will hide the true native status message. With this version of
3160 perl, the true native child status can always be retrieved so that
3161 is not a problem. But in this case, Pl_statusvalue and errno may
3162 have different values in them.
3165 # define STATUS_NATIVE_CHILD_SET(n) \
3167 I32 evalue = (I32)n; \
3168 if (evalue == EVMSERR) { \
3169 PL_statusvalue_vms = vaxc$errno; \
3170 PL_statusvalue = evalue; \
3172 PL_statusvalue_vms = evalue; \
3173 if (evalue == -1) { \
3174 PL_statusvalue = -1; \
3175 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \
3177 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \
3178 set_vaxc_errno(evalue); \
3179 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \
3180 set_errno(EVMSERR); \
3181 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \
3182 PL_statusvalue = PL_statusvalue << child_offset_bits; \
3186 # ifdef VMSISH_STATUS
3187 # define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX)
3189 # define STATUS_CURRENT STATUS_UNIX
3192 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update
3193 * the NATIVE status to an equivalent value. Can not be used to translate
3194 * exit code values as exit code values are not guaranteed to have any
3195 * relationship at all to errno values.
3196 * This is used when Perl is forcing errno to have a specific value.
3198 # define STATUS_UNIX_SET(n) \
3200 I32 evalue = (I32)n; \
3201 PL_statusvalue = evalue; \
3202 if (PL_statusvalue != -1) { \
3203 if (PL_statusvalue != EVMSERR) { \
3204 PL_statusvalue &= 0xFFFF; \
3205 if (MY_POSIX_EXIT) \
3206 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\
3207 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \
3210 PL_statusvalue_vms = vaxc$errno; \
3213 else PL_statusvalue_vms = SS$_ABORT; \
3214 set_vaxc_errno(PL_statusvalue_vms); \
3217 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets
3218 * the NATIVE error status based on it.
3220 * When in the default mode to comply with the Perl VMS documentation,
3221 * 0 is a success and any other code sets the NATIVE status to a failure
3222 * code of SS$_ABORT.
3224 * In the new POSIX EXIT mode, native status will be set so that the
3225 * actual exit code will can be retrieved by the calling program or
3228 * If the exit code is not clearly a UNIX parent or child exit status,
3229 * it will be passed through as a VMS status.
3232 # define STATUS_UNIX_EXIT_SET(n) \
3234 I32 evalue = (I32)n; \
3235 PL_statusvalue = evalue; \
3236 if (MY_POSIX_EXIT) { \
3237 if (evalue <= 0xFF00) { \
3238 if (evalue > 0xFF) \
3239 evalue = (evalue >> child_offset_bits) & 0xFF; \
3240 PL_statusvalue_vms = \
3241 (C_FAC_POSIX | (evalue << 3 ) | \
3242 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \
3243 } else /* forgive them Perl, for they have sinned */ \
3244 PL_statusvalue_vms = evalue; \
3247 PL_statusvalue_vms = SS$_NORMAL; \
3248 else if (evalue <= 0xFF00) \
3249 PL_statusvalue_vms = SS$_ABORT; \
3250 else { /* forgive them Perl, for they have sinned */ \
3251 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \
3252 else PL_statusvalue_vms = vaxc$errno; \
3253 /* And obviously used a VMS status value instead of UNIX */ \
3254 PL_statusvalue = EVMSERR; \
3256 set_vaxc_errno(PL_statusvalue_vms); \
3261 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code
3262 * and sets the NATIVE error status based on it. This special case
3263 * is needed to maintain compatibility with past VMS behavior.
3265 * In the default mode on VMS, this number is passed through as
3266 * both the NATIVE and UNIX status. Which makes it different
3267 * that the STATUS_UNIX_EXIT_SET.
3269 * In the new POSIX EXIT mode, native status will be set so that the
3270 * actual exit code will can be retrieved by the calling program or
3273 * A POSIX exit code is from 0 to 255. If the exit code is higher
3274 * than this, it needs to be assumed that it is a VMS exit code and
3278 # define STATUS_EXIT_SET(n) \
3280 I32 evalue = (I32)n; \
3281 PL_statusvalue = evalue; \
3282 if (MY_POSIX_EXIT) \
3283 if (evalue > 255) PL_statusvalue_vms = evalue; else { \
3284 PL_statusvalue_vms = \
3285 (C_FAC_POSIX | (evalue << 3 ) | \
3286 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \
3288 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \
3289 set_vaxc_errno(PL_statusvalue_vms); \
3293 /* This macro forces a success status */
3294 # define STATUS_ALL_SUCCESS \
3295 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL)
3297 /* This macro forces a failure status */
3298 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, \
3299 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \
3300 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT)
3302 #elif defined(__amigaos4__)
3303 /* A somewhat experimental attempt to simulate posix return code values */
3304 # define STATUS_NATIVE PL_statusvalue_posix
3305 # define STATUS_NATIVE_CHILD_SET(n) \
3307 PL_statusvalue_posix = (n); \
3308 if (PL_statusvalue_posix < 0) { \
3309 PL_statusvalue = -1; \
3312 PL_statusvalue = n << 8; \
3315 # define STATUS_UNIX_SET(n) \
3317 PL_statusvalue = (n); \
3318 if (PL_statusvalue != -1) \
3319 PL_statusvalue &= 0xFFFF; \
3321 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3322 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3323 # define STATUS_CURRENT STATUS_UNIX
3324 # define STATUS_EXIT STATUS_UNIX
3325 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3326 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3329 # define STATUS_NATIVE PL_statusvalue_posix
3330 # if defined(WCOREDUMP)
3331 # define STATUS_NATIVE_CHILD_SET(n) \
3333 PL_statusvalue_posix = (n); \
3334 if (PL_statusvalue_posix == -1) \
3335 PL_statusvalue = -1; \
3338 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3339 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \
3340 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \
3343 # elif defined(WIFEXITED)
3344 # define STATUS_NATIVE_CHILD_SET(n) \
3346 PL_statusvalue_posix = (n); \
3347 if (PL_statusvalue_posix == -1) \
3348 PL_statusvalue = -1; \
3351 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3352 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \
3356 # define STATUS_NATIVE_CHILD_SET(n) \
3358 PL_statusvalue_posix = (n); \
3359 if (PL_statusvalue_posix == -1) \
3360 PL_statusvalue = -1; \
3363 PL_statusvalue_posix & 0xFFFF; \
3367 # define STATUS_UNIX_SET(n) \
3369 PL_statusvalue = (n); \
3370 if (PL_statusvalue != -1) \
3371 PL_statusvalue &= 0xFFFF; \
3373 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3374 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3375 # define STATUS_CURRENT STATUS_UNIX
3376 # define STATUS_EXIT STATUS_UNIX
3377 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3378 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3381 /* flags in PL_exit_flags for nature of exit() */
3382 #define PERL_EXIT_EXPECTED 0x01
3383 #define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */
3384 #define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */
3385 #define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */
3388 /* format to use for version numbers in file/directory names */
3389 /* XXX move to Configure? */
3390 /* This was only ever used for the current version, and that can be done at
3391 compile time, as PERL_FS_VERSION, so should we just delete it? */
3392 # ifndef PERL_FS_VER_FMT
3393 # define PERL_FS_VER_FMT "%d.%d.%d"
3397 #ifndef PERL_FS_VERSION
3398 # define PERL_FS_VERSION PERL_VERSION_STRING
3401 /* This defines a way to flush all output buffers. This may be a
3402 * performance issue, so we allow people to disable it. Also, if
3403 * we are using stdio, there are broken implementations of fflush(NULL)
3404 * out there, Solaris being the most prominent.
3406 #ifndef PERL_FLUSHALL_FOR_CHILD
3407 # if defined(USE_PERLIO) || defined(FFLUSH_NULL)
3408 # define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL)
3409 # elif defined(FFLUSH_ALL)
3410 # define PERL_FLUSHALL_FOR_CHILD my_fflush_all()
3412 # define PERL_FLUSHALL_FOR_CHILD NOOP
3416 #ifndef PERL_WAIT_FOR_CHILDREN
3417 # define PERL_WAIT_FOR_CHILDREN NOOP
3420 /* the traditional thread-unsafe notion of "current interpreter". */
3421 #ifndef PERL_SET_INTERP
3422 # define PERL_SET_INTERP(i) (PL_curinterp = (PerlInterpreter*)(i))
3425 #ifndef PERL_GET_INTERP
3426 # define PERL_GET_INTERP (PL_curinterp)
3429 #if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_GET_THX)
3430 # ifdef MULTIPLICITY
3431 # define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT)
3433 # define PERL_SET_THX(t) PERL_SET_CONTEXT(t)
3437 This replaces the previous %_ "hack" by the "%p" hacks.
3438 All that is required is that the perl source does not
3439 use "%-p" or "%-<number>p" or "%<number>p" formats.
3440 These formats will still work in perl code.
3441 See comments in sv.c for further details.
3443 Robin Barker 2005-07-14
3445 No longer use %1p for VDf = %vd. RMB 2007-10-19
3449 # define SVf_(n) "-" STRINGIFY(n) "p"
3457 # define SVf32 SVf_(32)
3461 # define SVf256 SVf_(256)
3464 #define SVfARG(p) ((void*)(p))
3470 /* Not ideal, but we cannot easily include a number in an already-numeric
3471 * format sequence. */
3473 # define HEKf256 "3p"
3476 #define HEKfARG(p) ((void*)(p))
3479 =for apidoc Amnh||UTF8f
3480 =for apidoc Amh||UTF8fARG|bool is_utf8|Size_t byte_len|char *str
3483 * %4p is a custom format
3486 # define UTF8f "d%" UVuf "%4p"
3488 #define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p)
3491 #define PNfARG(pn) (int)1, (UV)PadnameLEN(pn), (void *)PadnamePV(pn)
3494 /* not used; but needed for backward compatibility with XS code? - RMB */
3500 #ifdef HASATTRIBUTE_DEPRECATED
3501 # define __attribute__deprecated__ __attribute__((deprecated))
3503 #ifdef HASATTRIBUTE_FORMAT
3504 # define __attribute__format__(x,y,z) __attribute__((format(x,y,z)))
3506 #ifdef HASATTRIBUTE_MALLOC
3507 # define __attribute__malloc__ __attribute__((__malloc__))
3509 #ifdef HASATTRIBUTE_NONNULL
3510 # define __attribute__nonnull__(a) __attribute__((nonnull(a)))
3512 #ifdef HASATTRIBUTE_NORETURN
3513 # define __attribute__noreturn__ __attribute__((noreturn))
3515 #ifdef HASATTRIBUTE_PURE
3516 # define __attribute__pure__ __attribute__((pure))
3518 #ifdef HASATTRIBUTE_UNUSED
3519 # define __attribute__unused__ __attribute__((unused))
3521 #ifdef HASATTRIBUTE_WARN_UNUSED_RESULT
3522 # define __attribute__warn_unused_result__ __attribute__((warn_unused_result))
3525 /* If we haven't defined the attributes yet, define them to blank. */
3526 #ifndef __attribute__deprecated__
3527 # define __attribute__deprecated__
3529 #ifndef __attribute__format__
3530 # define __attribute__format__(x,y,z)
3532 #ifndef __attribute__malloc__
3533 # define __attribute__malloc__
3535 #ifndef __attribute__nonnull__
3536 # define __attribute__nonnull__(a)
3538 #ifndef __attribute__noreturn__
3539 # define __attribute__noreturn__
3541 #ifndef __attribute__pure__
3542 # define __attribute__pure__
3544 #ifndef __attribute__unused__
3545 # define __attribute__unused__
3547 #ifndef __attribute__warn_unused_result__
3548 # define __attribute__warn_unused_result__
3551 #if !defined(DEBUGGING) && !defined(NDEBUG)
3556 /* For functions that are marked as __attribute__noreturn__, it's not
3557 appropriate to call return. In either case, include the lint directive.
3559 #ifdef HASATTRIBUTE_NORETURN
3560 # define NORETURN_FUNCTION_END NOT_REACHED;
3562 # define NORETURN_FUNCTION_END NOT_REACHED; return 0
3565 /* Some OS warn on NULL format to printf */
3566 #ifdef PRINTF_FORMAT_NULL_OK
3567 # define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z)
3569 # define __attribute__format__null_ok__(x,y,z)
3572 #ifdef HAS_BUILTIN_EXPECT
3573 # define EXPECT(expr,val) __builtin_expect(expr,val)
3575 # define EXPECT(expr,val) (expr)
3579 =head1 Miscellaneous Functions
3581 =for apidoc AmU|bool|LIKELY|const bool expr
3583 Returns the input unchanged, but at the same time it gives a branch prediction
3584 hint to the compiler that this condition is likely to be true.
3586 =for apidoc AmU|bool|UNLIKELY|const bool expr
3588 Returns the input unchanged, but at the same time it gives a branch prediction
3589 hint to the compiler that this condition is likely to be false.
3593 #define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
3594 #define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
3596 #ifdef HAS_BUILTIN_CHOOSE_EXPR
3600 /* STATIC_ASSERT_DECL/STATIC_ASSERT_STMT are like assert(), but for compile
3601 time invariants. That is, their argument must be a constant expression that
3602 can be verified by the compiler. This expression can contain anything that's
3603 known to the compiler, e.g. #define constants, enums, or sizeof (...). If
3604 the expression evaluates to 0, compilation fails.
3605 Because they generate no runtime code (i.e. their use is "free"), they're
3606 always active, even under non-DEBUGGING builds.
3607 STATIC_ASSERT_DECL expands to a declaration and is suitable for use at
3608 file scope (outside of any function).
3609 STATIC_ASSERT_STMT expands to a statement and is suitable for use inside a
3612 #if (defined(static_assert) || (defined(__cplusplus) && __cplusplus >= 201103L)) && (!defined(__IBMC__) || __IBMC__ >= 1210)
3613 /* static_assert is a macro defined in <assert.h> in C11 or a compiler
3614 builtin in C++11. But IBM XL C V11 does not support _Static_assert, no
3615 matter what <assert.h> says.
3617 # define STATIC_ASSERT_DECL(COND) static_assert(COND, #COND)
3619 /* We use a bit-field instead of an array because gcc accepts
3620 'typedef char x[n]' where n is not a compile-time constant.
3621 We want to enforce constantness.
3623 # define STATIC_ASSERT_2(COND, SUFFIX) \
3625 unsigned int _static_assertion_failed_##SUFFIX : (COND) ? 1 : -1; \
3626 } _static_assertion_failed_##SUFFIX PERL_UNUSED_DECL
3627 # define STATIC_ASSERT_1(COND, SUFFIX) STATIC_ASSERT_2(COND, SUFFIX)
3628 # define STATIC_ASSERT_DECL(COND) STATIC_ASSERT_1(COND, __LINE__)
3630 /* We need this wrapper even in C11 because 'case X: static_assert(...);' is an
3631 error (static_assert is a declaration, and only statements can have labels).
3633 #define STATIC_ASSERT_STMT(COND) STMT_START { STATIC_ASSERT_DECL(COND); } STMT_END
3635 #ifndef __has_builtin
3636 # define __has_builtin(x) 0 /* not a clang style compiler */
3639 /* ASSUME is like assert(), but it has a benefit in a release build. It is a
3640 hint to a compiler about a statement of fact in a function call free
3641 expression, which allows the compiler to generate better machine code.
3642 In a debug build, ASSUME(x) is a synonym for assert(x). ASSUME(0) means
3643 the control path is unreachable. In a for loop, ASSUME can be used to hint
3644 that a loop will run at least X times. ASSUME is based off MSVC's __assume
3645 intrinsic function, see its documents for more details.
3649 # if __has_builtin(__builtin_unreachable) \
3650 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5 || __GNUC__ > 4) /* 4.5 -> */
3651 # define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable())
3652 # elif defined(_MSC_VER)
3653 # define ASSUME(x) __assume(x)
3654 # elif defined(__ARMCC_VERSION) /* untested */
3655 # define ASSUME(x) __promise(x)
3657 /* a random compiler might define assert to its own special optimization token
3658 so pass it through to C lib as a last resort */
3659 # define ASSUME(x) assert(x)
3662 # define ASSUME(x) assert(x)
3665 #if defined(__sun) /* ASSUME() generates warnings on Solaris */
3666 # define NOT_REACHED
3667 #elif defined(DEBUGGING) && (__has_builtin(__builtin_unreachable) \
3668 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5 || __GNUC__ > 4)) /* 4.5 -> */
3669 # define NOT_REACHED STMT_START { ASSUME(!"UNREACHABLE"); __builtin_unreachable(); } STMT_END
3671 # define NOT_REACHED ASSUME(!"UNREACHABLE")
3674 /* Some unistd.h's give a prototype for pause() even though
3675 HAS_PAUSE ends up undefined. This causes the #define
3676 below to be rejected by the compiler. Sigh.
3681 #define Pause() sleep((32767<<16)+32767)
3685 # ifdef IOCPARM_MASK
3686 /* on BSDish systems we're safe */
3687 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
3688 # elif defined(_IOC_SIZE) && defined(__GLIBC__)
3689 /* on Linux systems we're safe; except when we're not [perl #38223] */
3690 # define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x))
3692 /* otherwise guess at what's safe */
3693 # define IOCPARM_LEN(x) 256
3697 #if defined(__CYGWIN__)
3699 * This symbol, if defined, indicates that the program should
3700 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
3701 * that a file is in "binary" mode -- that is, that no translation
3702 * of bytes occurs on read or write operations.
3704 # define USEMYBINMODE /**/
3705 # include <io.h> /* for setmode() prototype */
3706 # define my_binmode(fp, iotype, mode) \
3707 cBOOL(PerlLIO_setmode(fileno(fp), mode) != -1)
3711 void init_os_extras(void);
3714 #ifdef UNION_ANY_DEFINITION
3715 UNION_ANY_DEFINITION;
3733 void (*any_dptr) (void*);
3734 void (*any_dxptr) (pTHX_ void*);
3738 typedef I32 (*filter_t) (pTHX_ int, SV *, int);
3740 #define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
3741 #define FILTER_DATA(idx) \
3742 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL)
3743 #define FILTER_ISREADER(idx) \
3744 (PL_parser && PL_parser->rsfp_filters \
3745 && idx >= AvFILLp(PL_parser->rsfp_filters))
3746 #define PERL_FILTER_EXISTS(i) \
3747 (PL_parser && PL_parser->rsfp_filters \
3748 && (i) <= av_tindex(PL_parser->rsfp_filters))
3750 #if defined(_AIX) && !defined(_AIX43)
3751 #if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE)
3752 /* We cannot include <crypt.h> to get the struct crypt_data
3753 * because of setkey prototype problems when threading */
3754 typedef struct crypt_data { /* straight from /usr/include/crypt.h */
3755 /* From OSF, Not needed in AIX
3763 #endif /* threading */
3766 #ifndef PERL_CALLCONV
3768 # define PERL_CALLCONV extern "C"
3770 # define PERL_CALLCONV
3773 #ifndef PERL_CALLCONV_NO_RET
3774 # define PERL_CALLCONV_NO_RET PERL_CALLCONV
3777 /* PERL_STATIC_NO_RET is supposed to be equivalent to STATIC on builds that
3778 dont have a noreturn as a declaration specifier
3780 #ifndef PERL_STATIC_NO_RET
3781 # define PERL_STATIC_NO_RET STATIC
3783 /* PERL_STATIC_NO_RET is supposed to be equivalent to PERL_STATIC_INLINE on
3784 builds that dont have a noreturn as a declaration specifier
3786 #ifndef PERL_STATIC_INLINE_NO_RET
3787 # define PERL_STATIC_INLINE_NO_RET PERL_STATIC_INLINE
3791 # include "iperlsys.h"
3794 #ifdef __LIBCATAMOUNT__
3795 #undef HAS_PASSWD /* unixish.h but not unixish enough. */
3797 #define FAKE_BIT_BUCKET
3800 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0.
3801 * Note that the USE_HASH_SEED and similar defines are *NOT* defined by
3802 * Configure, despite their names being similar to other defines like
3803 * USE_ITHREADS. Configure in fact knows nothing about the randomised
3804 * hashes. Therefore to enable/disable the hash randomisation defines
3805 * use the Configure -Accflags=... instead. */
3806 #if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED)
3807 # define USE_HASH_SEED
3813 /* macros to define bit-fields in structs. */
3814 #ifndef PERL_BITFIELD8
3815 # define PERL_BITFIELD8 unsigned
3817 #ifndef PERL_BITFIELD16
3818 # define PERL_BITFIELD16 unsigned
3820 #ifndef PERL_BITFIELD32
3821 # define PERL_BITFIELD32 unsigned
3831 #include "opnames.h"
3838 #include "warnings.h"
3841 /* these would be in doio.h if there was such a file */
3842 #define my_stat() my_stat_flags(SV_GMAGIC)
3843 #define my_lstat() my_lstat_flags(SV_GMAGIC)
3845 /* defined in sv.c, but also used in [ach]v.c */
3848 #undef _XPVCV_COMMON
3852 typedef struct magic_state MGS; /* struct magic_state defined in mg.c */
3854 #if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C)
3856 /* These have to be predeclared, as they are used in proto.h which is #included
3857 * before their definitions in regcomp.h. */
3860 typedef struct regnode_charclass regnode_charclass;
3862 /* A hopefully less confusing name. The sub-classes are all Posix classes only
3863 * used under /l matching */
3864 typedef struct regnode_charclass_posixl regnode_charclass_class;
3865 typedef struct regnode_charclass_posixl regnode_charclass_posixl;
3867 typedef struct regnode_ssc regnode_ssc;
3868 typedef struct RExC_state_t RExC_state_t;
3869 struct _reg_trie_data;
3873 struct ptr_tbl_ent {
3874 struct ptr_tbl_ent* next;
3880 struct ptr_tbl_ent** tbl_ary;
3883 struct ptr_tbl_arena *tbl_arena;
3884 struct ptr_tbl_ent *tbl_arena_next;
3885 struct ptr_tbl_ent *tbl_arena_end;
3888 #if defined(htonl) && !defined(HAS_HTONL)
3891 #if defined(htons) && !defined(HAS_HTONS)
3894 #if defined(ntohl) && !defined(HAS_NTOHL)
3897 #if defined(ntohs) && !defined(HAS_NTOHS)
3905 # if (BYTEORDER & 0xffff) == 0x4321
3906 /* Big endian system, so ntohl, ntohs, htonl and htons do not need to
3907 re-order their values. However, to behave identically to the alternative
3908 implementations, they should truncate to the correct size. */
3909 # define ntohl(x) ((x)&0xFFFFFFFF)
3910 # define htonl(x) ntohl(x)
3911 # define ntohs(x) ((x)&0xFFFF)
3912 # define htons(x) ntohs(x)
3913 # elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
3915 /* Note that we can't straight out declare our own htonl and htons because
3916 the Win32 build process forcibly undefines HAS_HTONL etc for its miniperl,
3917 to avoid the overhead of initialising the socket subsystem, but the headers
3918 that *declare* the various functions are still seen. If we declare our own
3919 htonl etc they will clash with the declarations in the Win32 headers. */
3921 PERL_STATIC_INLINE U32
3922 my_swap32(const U32 x) {
3923 return ((x & 0xFF) << 24) | ((x >> 24) & 0xFF)
3924 | ((x & 0x0000FF00) << 8) | ((x & 0x00FF0000) >> 8);
3927 PERL_STATIC_INLINE U16
3928 my_swap16(const U16 x) {
3929 return ((x & 0xFF) << 8) | ((x >> 8) & 0xFF);
3932 # define htonl(x) my_swap32(x)
3933 # define ntohl(x) my_swap32(x)
3934 # define ntohs(x) my_swap16(x)
3935 # define htons(x) my_swap16(x)
3937 # error "Unsupported byteorder"
3938 /* The C pre-processor doesn't let us return the value of BYTEORDER as part of
3939 the error message. Please check the value of the macro BYTEORDER, as defined
3940 in config.h. The values of BYTEORDER we expect are
3942 big endian little endian
3943 32 bit 0x4321 0x1234
3944 64 bit 0x87654321 0x12345678
3946 If you have a system with a different byte order, please see
3947 pod/perlhack.pod for how to submit a patch to add supporting code.
3953 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
3956 #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
3957 /* Little endian system, so vtohl, vtohs, htovl and htovs do not need to
3958 re-order their values. However, to behave identically to the alternative
3959 implementations, they should truncate to the correct size. */
3960 # define vtohl(x) ((x)&0xFFFFFFFF)
3961 # define vtohs(x) ((x)&0xFFFF)
3962 # define htovl(x) vtohl(x)
3963 # define htovs(x) vtohs(x)
3964 #elif BYTEORDER == 0x4321 || BYTEORDER == 0x87654321
3965 # define vtohl(x) ((((x)&0xFF)<<24) \
3967 +(((x)&0x0000FF00)<<8) \
3968 +(((x)&0x00FF0000)>>8) )
3969 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
3970 # define htovl(x) vtohl(x)
3971 # define htovs(x) vtohs(x)
3973 # error "Unsupported byteorder"
3974 /* If you have need for current perl on PDP-11 or similar, and can help test
3975 that blead keeps working on a mixed-endian system, then see
3976 pod/perlhack.pod for how to submit patches to things working again. */
3979 /* *MAX Plus 1. A floating point value.
3980 Hopefully expressed in a way that dodgy floating point can't mess up.
3981 >> 2 rather than 1, so that value is safely less than I32_MAX after 1
3983 May find that some broken compiler will want the value cast to I32.
3984 [after the shift, as signed >> may not be as secure as unsigned >>]
3986 #define I32_MAX_P1 (2.0 * (1 + (((U32)I32_MAX) >> 1)))
3987 #define U32_MAX_P1 (4.0 * (1 + ((U32_MAX) >> 2)))
3988 /* For compilers that can't correctly cast NVs over 0x7FFFFFFF (or
3989 0x7FFFFFFFFFFFFFFF) to an unsigned integer. In the future, sizeof(UV)
3990 may be greater than sizeof(IV), so don't assume that half max UV is max IV.
3992 #define U32_MAX_P1_HALF (2.0 * (1 + ((U32_MAX) >> 2)))
3994 #define UV_MAX_P1 (4.0 * (1 + ((UV_MAX) >> 2)))
3995 #define IV_MAX_P1 (2.0 * (1 + (((UV)IV_MAX) >> 1)))
3996 #define UV_MAX_P1_HALF (2.0 * (1 + ((UV_MAX) >> 2)))
3998 /* This may look like unnecessary jumping through hoops, but converting
3999 out of range floating point values to integers *is* undefined behaviour,
4000 and it is starting to bite.
4003 #define I_32(what) (cast_i32((NV)(what)))
4004 #define U_32(what) (cast_ulong((NV)(what)))
4005 #define I_V(what) (cast_iv((NV)(what)))
4006 #define U_V(what) (cast_uv((NV)(what)))
4008 #define I_32(n) ((n) < I32_MAX_P1 ? ((n) < I32_MIN ? I32_MIN : (I32) (n)) \
4009 : ((n) < U32_MAX_P1 ? (I32)(U32) (n) \
4010 : ((n) > 0 ? (I32) U32_MAX : 0 /* NaN */)))
4011 #define U_32(n) ((n) < 0.0 ? ((n) < I32_MIN ? (UV) I32_MIN : (U32)(I32) (n)) \
4012 : ((n) < U32_MAX_P1 ? (U32) (n) \
4013 : ((n) > 0 ? U32_MAX : 0 /* NaN */)))
4014 #define I_V(n) (LIKELY((n) < IV_MAX_P1) ? (UNLIKELY((n) < IV_MIN) ? IV_MIN : (IV) (n)) \
4015 : (LIKELY((n) < UV_MAX_P1) ? (IV)(UV) (n) \
4016 : ((n) > 0 ? (IV)UV_MAX : 0 /* NaN */)))
4017 #define U_V(n) ((n) < 0.0 ? (UNLIKELY((n) < IV_MIN) ? (UV) IV_MIN : (UV)(IV) (n)) \
4018 : (LIKELY((n) < UV_MAX_P1) ? (UV) (n) \
4019 : ((n) > 0 ? UV_MAX : 0 /* NaN */)))
4022 #define U_S(what) ((U16)U_32(what))
4023 #define U_I(what) ((unsigned int)U_32(what))
4024 #define U_L(what) U_32(what)
4027 # ifndef Perl_signbit
4028 # define Perl_signbit signbit
4032 /* These do not care about the fractional part, only about the range. */
4033 #define NV_WITHIN_IV(nv) (I_V(nv) >= IV_MIN && I_V(nv) <= IV_MAX)
4034 #define NV_WITHIN_UV(nv) ((nv)>=0.0 && U_V(nv) >= UV_MIN && U_V(nv) <= UV_MAX)
4036 /* Used with UV/IV arguments: */
4037 /* XXXX: need to speed it up */
4038 #define CLUMP_2UV(iv) ((iv) < 0 ? 0 : (UV)(iv))
4039 #define CLUMP_2IV(uv) ((uv) > (UV)IV_MAX ? IV_MAX : (IV)(uv))
4046 #if !(defined(WIN32) || defined(SYMBIAN))
4047 Uid_t getuid (void);
4048 Uid_t geteuid (void);
4049 Gid_t getgid (void);
4050 Gid_t getegid (void);
4054 #ifndef Perl_debug_log
4055 # define Perl_debug_log PerlIO_stderr()
4058 #ifndef Perl_error_log
4059 # define Perl_error_log (PL_stderrgv \
4060 && isGV(PL_stderrgv) \
4061 && GvIOp(PL_stderrgv) \
4062 && IoOFP(GvIOp(PL_stderrgv)) \
4063 ? IoOFP(GvIOp(PL_stderrgv)) \
4068 #define DEBUG_p_FLAG 0x00000001 /* 1 */
4069 #define DEBUG_s_FLAG 0x00000002 /* 2 */
4070 #define DEBUG_l_FLAG 0x00000004 /* 4 */
4071 #define DEBUG_t_FLAG 0x00000008 /* 8 */
4072 #define DEBUG_o_FLAG 0x00000010 /* 16 */
4073 #define DEBUG_c_FLAG 0x00000020 /* 32 */
4074 #define DEBUG_P_FLAG 0x00000040 /* 64 */
4075 #define DEBUG_m_FLAG 0x00000080 /* 128 */
4076 #define DEBUG_f_FLAG 0x00000100 /* 256 */
4077 #define DEBUG_r_FLAG 0x00000200 /* 512 */
4078 #define DEBUG_x_FLAG 0x00000400 /* 1024 */
4079 #define DEBUG_u_FLAG 0x00000800 /* 2048 */
4080 /* U is reserved for Unofficial, exploratory hacking */
4081 #define DEBUG_U_FLAG 0x00001000 /* 4096 */
4083 #define DEBUG_X_FLAG 0x00004000 /* 16384 */
4084 #define DEBUG_D_FLAG 0x00008000 /* 32768 */
4085 #define DEBUG_S_FLAG 0x00010000 /* 65536 */
4086 #define DEBUG_T_FLAG 0x00020000 /* 131072 */
4087 #define DEBUG_R_FLAG 0x00040000 /* 262144 */
4088 #define DEBUG_J_FLAG 0x00080000 /* 524288 */
4089 #define DEBUG_v_FLAG 0x00100000 /*1048576 */
4090 #define DEBUG_C_FLAG 0x00200000 /*2097152 */
4091 #define DEBUG_A_FLAG 0x00400000 /*4194304 */
4092 #define DEBUG_q_FLAG 0x00800000 /*8388608 */
4093 #define DEBUG_M_FLAG 0x01000000 /*16777216*/
4094 #define DEBUG_B_FLAG 0x02000000 /*33554432*/
4095 #define DEBUG_L_FLAG 0x04000000 /*67108864*/
4096 #define DEBUG_i_FLAG 0x08000000 /*134217728*/
4097 #define DEBUG_MASK 0x0FFFEFFF /* mask of all the standard flags */
4099 #define DEBUG_DB_RECURSE_FLAG 0x40000000
4100 #define DEBUG_TOP_FLAG 0x80000000 /* -D was given --> PL_debug |= FLAG */
4102 # define DEBUG_p_TEST_ UNLIKELY(PL_debug & DEBUG_p_FLAG)
4103 # define DEBUG_s_TEST_ UNLIKELY(PL_debug & DEBUG_s_FLAG)
4104 # define DEBUG_l_TEST_ UNLIKELY(PL_debug & DEBUG_l_FLAG)
4105 # define DEBUG_t_TEST_ UNLIKELY(PL_debug & DEBUG_t_FLAG)
4106 # define DEBUG_o_TEST_ UNLIKELY(PL_debug & DEBUG_o_FLAG)
4107 # define DEBUG_c_TEST_ UNLIKELY(PL_debug & DEBUG_c_FLAG)
4108 # define DEBUG_P_TEST_ UNLIKELY(PL_debug & DEBUG_P_FLAG)
4109 # define DEBUG_m_TEST_ UNLIKELY(PL_debug & DEBUG_m_FLAG)
4110 # define DEBUG_f_TEST_ UNLIKELY(PL_debug & DEBUG_f_FLAG)
4111 # define DEBUG_r_TEST_ UNLIKELY(PL_debug & DEBUG_r_FLAG)
4112 # define DEBUG_x_TEST_ UNLIKELY(PL_debug & DEBUG_x_FLAG)
4113 # define DEBUG_u_TEST_ UNLIKELY(PL_debug & DEBUG_u_FLAG)
4114 # define DEBUG_U_TEST_ UNLIKELY(PL_debug & DEBUG_U_FLAG)
4115 # define DEBUG_X_TEST_ UNLIKELY(PL_debug & DEBUG_X_FLAG)
4116 # define DEBUG_D_TEST_ UNLIKELY(PL_debug & DEBUG_D_FLAG)
4117 # define DEBUG_S_TEST_ UNLIKELY(PL_debug & DEBUG_S_FLAG)
4118 # define DEBUG_T_TEST_ UNLIKELY(PL_debug & DEBUG_T_FLAG)
4119 # define DEBUG_R_TEST_ UNLIKELY(PL_debug & DEBUG_R_FLAG)
4120 # define DEBUG_J_TEST_ UNLIKELY(PL_debug & DEBUG_J_FLAG)
4121 # define DEBUG_v_TEST_ UNLIKELY(PL_debug & DEBUG_v_FLAG)
4122 # define DEBUG_C_TEST_ UNLIKELY(PL_debug & DEBUG_C_FLAG)
4123 # define DEBUG_A_TEST_ UNLIKELY(PL_debug & DEBUG_A_FLAG)
4124 # define DEBUG_q_TEST_ UNLIKELY(PL_debug & DEBUG_q_FLAG)
4125 # define DEBUG_M_TEST_ UNLIKELY(PL_debug & DEBUG_M_FLAG)
4126 # define DEBUG_B_TEST_ UNLIKELY(PL_debug & DEBUG_B_FLAG)
4127 # define DEBUG_L_TEST_ UNLIKELY(PL_debug & DEBUG_L_FLAG)
4128 # define DEBUG_i_TEST_ UNLIKELY(PL_debug & DEBUG_i_FLAG)
4129 # define DEBUG_Xv_TEST_ (DEBUG_X_TEST_ && DEBUG_v_TEST_)
4130 # define DEBUG_Uv_TEST_ (DEBUG_U_TEST_ && DEBUG_v_TEST_)
4131 # define DEBUG_Pv_TEST_ (DEBUG_P_TEST_ && DEBUG_v_TEST_)
4132 # define DEBUG_Lv_TEST_ (DEBUG_L_TEST_ && DEBUG_v_TEST_)
4136 # define DEBUG_p_TEST DEBUG_p_TEST_
4137 # define DEBUG_s_TEST DEBUG_s_TEST_
4138 # define DEBUG_l_TEST DEBUG_l_TEST_
4139 # define DEBUG_t_TEST DEBUG_t_TEST_
4140 # define DEBUG_o_TEST DEBUG_o_TEST_
4141 # define DEBUG_c_TEST DEBUG_c_TEST_
4142 # define DEBUG_P_TEST DEBUG_P_TEST_
4143 # define DEBUG_m_TEST DEBUG_m_TEST_
4144 # define DEBUG_f_TEST DEBUG_f_TEST_
4145 # define DEBUG_r_TEST DEBUG_r_TEST_
4146 # define DEBUG_x_TEST DEBUG_x_TEST_
4147 # define DEBUG_u_TEST DEBUG_u_TEST_
4148 # define DEBUG_U_TEST DEBUG_U_TEST_
4149 # define DEBUG_X_TEST DEBUG_X_TEST_
4150 # define DEBUG_D_TEST DEBUG_D_TEST_
4151 # define DEBUG_S_TEST DEBUG_S_TEST_
4152 # define DEBUG_T_TEST DEBUG_T_TEST_
4153 # define DEBUG_R_TEST DEBUG_R_TEST_
4154 # define DEBUG_J_TEST DEBUG_J_TEST_
4155 # define DEBUG_v_TEST DEBUG_v_TEST_
4156 # define DEBUG_C_TEST DEBUG_C_TEST_
4157 # define DEBUG_A_TEST DEBUG_A_TEST_
4158 # define DEBUG_q_TEST DEBUG_q_TEST_
4159 # define DEBUG_M_TEST DEBUG_M_TEST_
4160 # define DEBUG_B_TEST DEBUG_B_TEST_
4161 # define DEBUG_L_TEST DEBUG_L_TEST_
4162 # define DEBUG_i_TEST DEBUG_i_TEST_
4163 # define DEBUG_Xv_TEST DEBUG_Xv_TEST_
4164 # define DEBUG_Uv_TEST DEBUG_Uv_TEST_
4165 # define DEBUG_Pv_TEST DEBUG_Pv_TEST_
4166 # define DEBUG_Lv_TEST DEBUG_Lv_TEST_
4168 # define PERL_DEB(a) a
4169 # define PERL_DEB2(a,b) a
4170 # define PERL_DEBUG(a) if (PL_debug) a
4171 # define DEBUG_p(a) if (DEBUG_p_TEST) a
4172 # define DEBUG_s(a) if (DEBUG_s_TEST) a
4173 # define DEBUG_l(a) if (DEBUG_l_TEST) a
4174 # define DEBUG_t(a) if (DEBUG_t_TEST) a
4175 # define DEBUG_o(a) if (DEBUG_o_TEST) a
4176 # define DEBUG_c(a) if (DEBUG_c_TEST) a
4177 # define DEBUG_P(a) if (DEBUG_P_TEST) a
4179 /* Temporarily turn off memory debugging in case the a
4180 * does memory allocation, either directly or indirectly. */
4181 # define DEBUG_m(a) \
4183 if (PERL_GET_INTERP) { \
4185 if (DEBUG_m_TEST) { \
4186 PL_debug &= ~DEBUG_m_FLAG; \
4188 PL_debug |= DEBUG_m_FLAG; \
4193 # define DEBUG__(t, a) \
4195 if (t) STMT_START {a;} STMT_END; \
4198 # define DEBUG_f(a) DEBUG__(DEBUG_f_TEST, a)
4200 # ifndef PERL_EXT_RE_BUILD
4201 # define DEBUG_r(a) DEBUG__(DEBUG_r_TEST, a)
4203 # define DEBUG_r(a) STMT_START {a;} STMT_END
4204 # endif /* PERL_EXT_RE_BUILD */
4206 # define DEBUG_x(a) DEBUG__(DEBUG_x_TEST, a)
4207 # define DEBUG_u(a) DEBUG__(DEBUG_u_TEST, a)
4208 # define DEBUG_U(a) DEBUG__(DEBUG_U_TEST, a)
4209 # define DEBUG_X(a) DEBUG__(DEBUG_X_TEST, a)
4210 # define DEBUG_D(a) DEBUG__(DEBUG_D_TEST, a)
4211 # define DEBUG_Xv(a) DEBUG__(DEBUG_Xv_TEST, a)
4212 # define DEBUG_Uv(a) DEBUG__(DEBUG_Uv_TEST, a)
4213 # define DEBUG_Pv(a) DEBUG__(DEBUG_Pv_TEST, a)
4214 # define DEBUG_Lv(a) DEBUG__(DEBUG_Lv_TEST, a)
4216 # define DEBUG_S(a) DEBUG__(DEBUG_S_TEST, a)
4217 # define DEBUG_T(a) DEBUG__(DEBUG_T_TEST, a)
4218 # define DEBUG_R(a) DEBUG__(DEBUG_R_TEST, a)
4219 # define DEBUG_v(a) DEBUG__(DEBUG_v_TEST, a)
4220 # define DEBUG_C(a) DEBUG__(DEBUG_C_TEST, a)
4221 # define DEBUG_A(a) DEBUG__(DEBUG_A_TEST, a)
4222 # define DEBUG_q(a) DEBUG__(DEBUG_q_TEST, a)
4223 # define DEBUG_M(a) DEBUG__(DEBUG_M_TEST, a)
4224 # define DEBUG_B(a) DEBUG__(DEBUG_B_TEST, a)
4225 # define DEBUG_L(a) DEBUG__(DEBUG_L_TEST, a)
4226 # define DEBUG_i(a) DEBUG__(DEBUG_i_TEST, a)
4228 #else /* ! DEBUGGING below */
4230 # define DEBUG_p_TEST (0)
4231 # define DEBUG_s_TEST (0)
4232 # define DEBUG_l_TEST (0)
4233 # define DEBUG_t_TEST (0)
4234 # define DEBUG_o_TEST (0)
4235 # define DEBUG_c_TEST (0)
4236 # define DEBUG_P_TEST (0)
4237 # define DEBUG_m_TEST (0)
4238 # define DEBUG_f_TEST (0)
4239 # define DEBUG_r_TEST (0)
4240 # define DEBUG_x_TEST (0)
4241 # define DEBUG_u_TEST (0)
4242 # define DEBUG_U_TEST (0)
4243 # define DEBUG_X_TEST (0)
4244 # define DEBUG_D_TEST (0)
4245 # define DEBUG_S_TEST (0)
4246 # define DEBUG_T_TEST (0)
4247 # define DEBUG_R_TEST (0)
4248 # define DEBUG_J_TEST (0)
4249 # define DEBUG_v_TEST (0)
4250 # define DEBUG_C_TEST (0)
4251 # define DEBUG_A_TEST (0)
4252 # define DEBUG_q_TEST (0)
4253 # define DEBUG_M_TEST (0)
4254 # define DEBUG_B_TEST (0)
4255 # define DEBUG_L_TEST (0)
4256 # define DEBUG_i_TEST (0)
4257 # define DEBUG_Xv_TEST (0)
4258 # define DEBUG_Uv_TEST (0)
4259 # define DEBUG_Pv_TEST (0)
4260 # define DEBUG_Lv_TEST (0)
4262 # define PERL_DEB(a)
4263 # define PERL_DEB2(a,b) b
4264 # define PERL_DEBUG(a)
4291 # define DEBUG_Xv(a)
4292 # define DEBUG_Uv(a)
4293 # define DEBUG_Pv(a)
4294 # define DEBUG_Lv(a)
4295 #endif /* DEBUGGING */
4298 #define DEBUG_SCOPE(where) \
4300 Perl_deb(aTHX_ "%s scope %ld (savestack=%ld) at %s:%d\n", \
4301 where, (long)PL_scopestack_ix, (long)PL_savestack_ix, \
4302 __FILE__, __LINE__));
4304 /* Keep the old croak based assert for those who want it, and as a fallback if
4305 the platform is so heretically non-ANSI that it can't assert. */
4307 #define Perl_assert(what) PERL_DEB2( \
4308 ((what) ? ((void) 0) : \
4309 (Perl_croak_nocontext("Assertion %s failed: file \"" __FILE__ \
4310 "\", line %d", STRINGIFY(what), __LINE__), \
4311 (void) 0)), ((void)0))
4313 /* assert() gets defined if DEBUGGING.
4314 * If no DEBUGGING, the <assert.h> has not been included. */
4316 # define assert(what) Perl_assert(what)
4319 # define assert_(what) assert(what),
4321 # define assert_(what)
4325 I32 (*uf_val)(pTHX_ IV, SV*);
4326 I32 (*uf_set)(pTHX_ IV, SV*);
4330 /* In pre-5.7-Perls the PERL_MAGIC_uvar magic didn't get the thread context.
4331 * XS code wanting to be backward compatible can do something
4332 * like the following:
4334 #ifndef PERL_MG_UFUNC
4335 #define PERL_MG_UFUNC(name,ix,sv) I32 name(IV ix, SV *sv)
4338 static PERL_MG_UFUNC(foo_get, index, val)
4348 #ifndef PERL_MG_UFUNC
4349 #define PERL_MG_UFUNC(name,ix,sv) I32 name(pTHX_ IV ix, SV *sv)
4354 /* isfinite and others are here rather than in math.h as C99 stipulates */
4359 # if !defined(WIN32) && !defined(VMS)
4361 char *crypt (const char*, const char*);
4363 # endif /* !WIN32 */
4366 char *getlogin (void);
4368 # endif /* !WIN32 */
4369 #endif /* !__cplusplus */
4371 /* Fixme on VMS. This needs to be a run-time, not build time options */
4372 /* Also rename() is affected by this */
4373 #ifdef UNLINK_ALL_VERSIONS /* Currently only makes sense for VMS */
4374 #define UNLINK unlnk
4375 I32 unlnk (pTHX_ const char*);
4377 #define UNLINK PerlLIO_unlink
4380 /* some versions of glibc are missing the setresuid() proto */
4381 #if defined(HAS_SETRESUID) && !defined(HAS_SETRESUID_PROTO)
4382 int setresuid(uid_t ruid, uid_t euid, uid_t suid);
4384 /* some versions of glibc are missing the setresgid() proto */
4385 #if defined(HAS_SETRESGID) && !defined(HAS_SETRESGID_PROTO)
4386 int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
4389 #ifndef HAS_SETREUID
4390 # ifdef HAS_SETRESUID
4391 # define setreuid(r,e) setresuid(r,e,(Uid_t)-1)
4392 # define HAS_SETREUID
4395 #ifndef HAS_SETREGID
4396 # ifdef HAS_SETRESGID
4397 # define setregid(r,e) setresgid(r,e,(Gid_t)-1)
4398 # define HAS_SETREGID
4402 /* Sighandler_t defined in iperlsys.h */
4404 #ifdef HAS_SIGACTION
4405 typedef struct sigaction Sigsave_t;
4407 typedef Sighandler_t Sigsave_t;
4418 # define RUNOPS_DEFAULT Perl_runops_debug
4420 # define RUNOPS_DEFAULT Perl_runops_standard
4423 #if defined(USE_PERLIO)
4424 EXTERN_C void PerlIO_teardown(void);
4425 # ifdef USE_ITHREADS
4426 # define PERLIO_INIT MUTEX_INIT(&PL_perlio_mutex)
4427 # define PERLIO_TERM \
4429 PerlIO_teardown(); \
4430 MUTEX_DESTROY(&PL_perlio_mutex);\
4433 # define PERLIO_INIT
4434 # define PERLIO_TERM PerlIO_teardown()
4437 # define PERLIO_INIT
4438 # define PERLIO_TERM
4442 # ifdef MUTEX_INIT_CALLS_MALLOC
4443 # define MALLOC_INIT \
4445 PL_malloc_mutex = NULL; \
4446 MUTEX_INIT(&PL_malloc_mutex); \
4448 # define MALLOC_TERM \
4450 perl_mutex tmp = PL_malloc_mutex; \
4451 PL_malloc_mutex = NULL; \
4452 MUTEX_DESTROY(&tmp); \
4455 # define MALLOC_INIT MUTEX_INIT(&PL_malloc_mutex)
4456 # define MALLOC_TERM MUTEX_DESTROY(&PL_malloc_mutex)
4459 # define MALLOC_INIT
4460 # define MALLOC_TERM
4463 #if defined(PERL_IMPLICIT_CONTEXT)
4465 struct perl_memory_debug_header;
4466 struct perl_memory_debug_header {
4468 # if defined(PERL_POISON) || defined(PERL_DEBUG_READONLY_COW)
4471 struct perl_memory_debug_header *prev;
4472 struct perl_memory_debug_header *next;
4473 # ifdef PERL_DEBUG_READONLY_COW
4478 #elif defined(PERL_DEBUG_READONLY_COW)
4480 struct perl_memory_debug_header;
4481 struct perl_memory_debug_header {
4487 #if defined (PERL_TRACK_MEMPOOL) || defined (PERL_DEBUG_READONLY_COW)
4489 # define PERL_MEMORY_DEBUG_HEADER_SIZE \
4490 (sizeof(struct perl_memory_debug_header) + \
4491 (MEM_ALIGNBYTES - sizeof(struct perl_memory_debug_header) \
4492 %MEM_ALIGNBYTES) % MEM_ALIGNBYTES)
4495 # define PERL_MEMORY_DEBUG_HEADER_SIZE 0
4498 #ifdef PERL_TRACK_MEMPOOL
4499 # ifdef PERL_DEBUG_READONLY_COW
4500 # define INIT_TRACK_MEMPOOL(header, interp) \
4502 (header).interpreter = (interp); \
4503 (header).prev = (header).next = &(header); \
4504 (header).readonly = 0; \
4507 # define INIT_TRACK_MEMPOOL(header, interp) \
4509 (header).interpreter = (interp); \
4510 (header).prev = (header).next = &(header); \
4514 # define INIT_TRACK_MEMPOOL(header, interp)
4517 #ifdef I_MALLOCMALLOC
4518 /* Needed for malloc_size(), malloc_good_size() on some systems */
4519 # include <malloc/malloc.h>
4523 # define Perl_safesysmalloc_size(where) Perl_malloced_size(where)
4525 # if defined(HAS_MALLOC_SIZE) && !defined(PERL_DEBUG_READONLY_COW)
4526 # ifdef PERL_TRACK_MEMPOOL
4527 # define Perl_safesysmalloc_size(where) \
4528 (malloc_size(((char *)(where)) - PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
4530 # define Perl_safesysmalloc_size(where) malloc_size(where)
4533 # ifdef HAS_MALLOC_GOOD_SIZE
4534 # ifdef PERL_TRACK_MEMPOOL
4535 # define Perl_malloc_good_size(how_much) \
4536 (malloc_good_size((how_much) + PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
4538 # define Perl_malloc_good_size(how_much) malloc_good_size(how_much)
4541 /* Having this as the identity operation makes some code simpler. */
4542 # define Perl_malloc_good_size(how_much) (how_much)
4546 typedef int (*runops_proc_t)(pTHX);
4547 typedef void (*share_proc_t) (pTHX_ SV *sv);
4548 typedef int (*thrhook_proc_t) (pTHX);
4549 typedef OP* (*PPADDR_t[]) (pTHX);
4550 typedef bool (*destroyable_proc_t) (pTHX_ SV *sv);
4551 typedef void (*despatch_signals_proc_t) (pTHX);
4553 #if defined(__DYNAMIC__) && defined(PERL_DARWIN) && defined(PERL_CORE)
4554 # include <crt_externs.h> /* for the env array */
4555 # define environ (*_NSGetEnviron())
4556 #elif defined(USE_ENVIRON_ARRAY) && !defined(environ)
4557 /* VMS and some other platforms don't use the environ array */
4558 EXTERN_C char **environ; /* environment variables supplied via exec */
4561 #define PERL_PATCHLEVEL_H_IMPLICIT
4562 #include "patchlevel.h"
4563 #undef PERL_PATCHLEVEL_H_IMPLICIT
4565 #define PERL_VERSION_STRING STRINGIFY(PERL_REVISION) "." \
4566 STRINGIFY(PERL_VERSION) "." \
4567 STRINGIFY(PERL_SUBVERSION)
4569 #define PERL_API_VERSION_STRING STRINGIFY(PERL_API_REVISION) "." \
4570 STRINGIFY(PERL_API_VERSION) "." \
4571 STRINGIFY(PERL_API_SUBVERSION)
4575 /* handy constants */
4576 EXTCONST char PL_warn_uninit[]
4577 INIT("Use of uninitialized value%s%s%s");
4578 EXTCONST char PL_warn_uninit_sv[]
4579 INIT("Use of uninitialized value%" SVf "%s%s");
4580 EXTCONST char PL_warn_nosemi[]
4581 INIT("Semicolon seems to be missing");
4582 EXTCONST char PL_warn_reserved[]
4583 INIT("Unquoted string \"%s\" may clash with future reserved word");
4584 EXTCONST char PL_warn_nl[]
4585 INIT("Unsuccessful %s on filename containing newline");
4586 EXTCONST char PL_no_wrongref[]
4587 INIT("Can't use %s ref as %s ref");
4588 /* The core no longer needs this here. If you require the string constant,
4589 please inline a copy into your own code. */
4590 EXTCONST char PL_no_symref[] __attribute__deprecated__
4591 INIT("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use");
4592 EXTCONST char PL_no_symref_sv[]
4593 INIT("Can't use string (\"%" SVf32 "\"%s) as %s ref while \"strict refs\" in use");
4595 EXTCONST char PL_no_usym[]
4596 INIT("Can't use an undefined value as %s reference");
4597 EXTCONST char PL_no_aelem[]
4598 INIT("Modification of non-creatable array value attempted, subscript %d");
4599 EXTCONST char PL_no_helem_sv[]
4600 INIT("Modification of non-creatable hash value attempted, subscript \"%" SVf "\"");
4601 EXTCONST char PL_no_modify[]
4602 INIT("Modification of a read-only value attempted");
4603 EXTCONST char PL_no_mem[sizeof("Out of memory!\n")]
4604 INIT("Out of memory!\n");
4605 EXTCONST char PL_no_security[]
4606 INIT("Insecure dependency in %s%s");
4607 EXTCONST char PL_no_sock_func[]
4608 INIT("Unsupported socket function \"%s\" called");
4609 EXTCONST char PL_no_dir_func[]
4610 INIT("Unsupported directory function \"%s\" called");
4611 EXTCONST char PL_no_func[]
4612 INIT("The %s function is unimplemented");
4613 EXTCONST char PL_no_myglob[]
4614 INIT("\"%s\" %s %s can't be in a package");
4615 EXTCONST char PL_no_localize_ref[]
4616 INIT("Can't localize through a reference");
4617 EXTCONST char PL_memory_wrap[]
4618 INIT("panic: memory wrap");
4620 EXTCONST char PL_Yes[]
4622 EXTCONST char PL_No[]
4624 EXTCONST char PL_Zero[]
4626 EXTCONST char PL_hexdigit[]
4627 INIT("0123456789abcdef0123456789ABCDEF");
4629 EXTCONST STRLEN PL_WARN_ALL
4631 EXTCONST STRLEN PL_WARN_NONE
4634 /* This is constant on most architectures, a global on OS/2 */
4636 EXTCONST char PL_sh_path[]
4637 INIT(SH_PATH); /* full path of shell */
4641 EXTCONST char PL_cshname[]
4643 # define PL_cshlen (sizeof(CSH "") - 1)
4646 /* These are baked at compile time into any shared perl library.
4647 In future releases this will allow us in main() to sanity test the
4648 library we're linking against. */
4650 EXTCONST U8 PL_revision
4651 INIT(PERL_REVISION);
4652 EXTCONST U8 PL_version
4654 EXTCONST U8 PL_subversion
4655 INIT(PERL_SUBVERSION);
4657 EXTCONST char PL_uuemap[65]
4658 INIT("`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_");
4660 /* a special string address whose value is "isa", but which perl knows
4661 * to treat as if it were really "DOES" when printing the method name in
4662 * the "Can't call method '%s'" error message */
4663 EXTCONST char PL_isa_DOES[]
4667 EXTCONST char PL_uudmap[256] =
4669 # include "uuudmap.h"
4671 # include "uudmap.h"
4674 EXTCONST char PL_bitcount[256] =
4676 # include "ubitcount.h"
4678 # include "bitcount.h"
4681 EXTCONST char* const PL_sig_name[] = { SIG_NAME };
4682 EXTCONST int PL_sig_num[] = { SIG_NUM };
4684 EXTCONST char PL_uudmap[256];
4685 EXTCONST char PL_bitcount[256];
4686 EXTCONST char* const PL_sig_name[];
4687 EXTCONST int PL_sig_num[];
4690 /* fast conversion and case folding tables. The folding tables complement the
4691 * fold, so that 'a' maps to 'A' and 'A' maps to 'a', ignoring more complicated
4692 * folds such as outside the range or to multiple characters. */
4697 /* The EBCDIC fold table depends on the code page, and hence is found in
4700 EXTCONST unsigned char PL_fold[] = {
4701 0, 1, 2, 3, 4, 5, 6, 7,
4702 8, 9, 10, 11, 12, 13, 14, 15,
4703 16, 17, 18, 19, 20, 21, 22, 23,
4704 24, 25, 26, 27, 28, 29, 30, 31,
4705 32, 33, 34, 35, 36, 37, 38, 39,
4706 40, 41, 42, 43, 44, 45, 46, 47,
4707 48, 49, 50, 51, 52, 53, 54, 55,
4708 56, 57, 58, 59, 60, 61, 62, 63,
4709 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
4710 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
4711 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
4712 'x', 'y', 'z', 91, 92, 93, 94, 95,
4713 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
4714 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
4715 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
4716 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
4717 128, 129, 130, 131, 132, 133, 134, 135,
4718 136, 137, 138, 139, 140, 141, 142, 143,
4719 144, 145, 146, 147, 148, 149, 150, 151,
4720 152, 153, 154, 155, 156, 157, 158, 159,
4721 160, 161, 162, 163, 164, 165, 166, 167,
4722 168, 169, 170, 171, 172, 173, 174, 175,
4723 176, 177, 178, 179, 180, 181, 182, 183,
4724 184, 185, 186, 187, 188, 189, 190, 191,
4725 192, 193, 194, 195, 196, 197, 198, 199,
4726 200, 201, 202, 203, 204, 205, 206, 207,
4727 208, 209, 210, 211, 212, 213, 214, 215,
4728 216, 217, 218, 219, 220, 221, 222, 223,
4729 224, 225, 226, 227, 228, 229, 230, 231,
4730 232, 233, 234, 235, 236, 237, 238, 239,
4731 240, 241, 242, 243, 244, 245, 246, 247,
4732 248, 249, 250, 251, 252, 253, 254, 255
4734 EXTCONST unsigned char PL_fold_latin1[] = {
4735 /* Full latin1 complement folding, except for three problematic code points:
4736 * Micro sign (181 = 0xB5) and y with diearesis (255 = 0xFF) have their
4737 * fold complements outside the Latin1 range, so can't match something
4738 * that isn't in utf8.
4739 * German lower case sharp s (223 = 0xDF) folds to two characters, 'ss',
4740 * not one, so can't be represented in this table.
4742 * All have to be specially handled */
4743 0, 1, 2, 3, 4, 5, 6, 7,
4744 8, 9, 10, 11, 12, 13, 14, 15,
4745 16, 17, 18, 19, 20, 21, 22, 23,
4746 24, 25, 26, 27, 28, 29, 30, 31,
4747 32, 33, 34, 35, 36, 37, 38, 39,
4748 40, 41, 42, 43, 44, 45, 46, 47,
4749 48, 49, 50, 51, 52, 53, 54, 55,
4750 56, 57, 58, 59, 60, 61, 62, 63,
4751 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
4752 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
4753 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
4754 'x', 'y', 'z', 91, 92, 93, 94, 95,
4755 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
4756 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
4757 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
4758 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
4759 128, 129, 130, 131, 132, 133, 134, 135,
4760 136, 137, 138, 139, 140, 141, 142, 143,
4761 144, 145, 146, 147, 148, 149, 150, 151,
4762 152, 153, 154, 155, 156, 157, 158, 159,
4763 160, 161, 162, 163, 164, 165, 166, 167,
4764 168, 169, 170, 171, 172, 173, 174, 175,
4765 176, 177, 178, 179, 180, 181 /*micro */, 182, 183,
4766 184, 185, 186, 187, 188, 189, 190, 191,
4767 192+32, 193+32, 194+32, 195+32, 196+32, 197+32, 198+32, 199+32,
4768 200+32, 201+32, 202+32, 203+32, 204+32, 205+32, 206+32, 207+32,
4769 208+32, 209+32, 210+32, 211+32, 212+32, 213+32, 214+32, 215,
4770 216+32, 217+32, 218+32, 219+32, 220+32, 221+32, 222+32, 223 /* ss */,
4771 224-32, 225-32, 226-32, 227-32, 228-32, 229-32, 230-32, 231-32,
4772 232-32, 233-32, 234-32, 235-32, 236-32, 237-32, 238-32, 239-32,
4773 240-32, 241-32, 242-32, 243-32, 244-32, 245-32, 246-32, 247,
4774 248-32, 249-32, 250-32, 251-32, 252-32, 253-32, 254-32,
4775 255 /* y with diaeresis */
4778 /* If these tables are accessed through ebcdic, the access will be converted to
4780 EXTCONST unsigned char PL_latin1_lc[] = { /* lowercasing */
4781 0, 1, 2, 3, 4, 5, 6, 7,
4782 8, 9, 10, 11, 12, 13, 14, 15,
4783 16, 17, 18, 19, 20, 21, 22, 23,
4784 24, 25, 26, 27, 28, 29, 30, 31,
4785 32, 33, 34, 35, 36, 37, 38, 39,
4786 40, 41, 42, 43, 44, 45, 46, 47,
4787 48, 49, 50, 51, 52, 53, 54, 55,
4788 56, 57, 58, 59, 60, 61, 62, 63,
4789 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
4790 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
4791 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
4792 'x', 'y', 'z', 91, 92, 93, 94, 95,
4793 96, 97, 98, 99, 100, 101, 102, 103,
4794 104, 105, 106, 107, 108, 109, 110, 111,
4795 112, 113, 114, 115, 116, 117, 118, 119,
4796 120, 121, 122, 123, 124, 125, 126, 127,
4797 128, 129, 130, 131, 132, 133, 134, 135,
4798 136, 137, 138, 139, 140, 141, 142, 143,
4799 144, 145, 146, 147, 148, 149, 150, 151,
4800 152, 153, 154, 155, 156, 157, 158, 159,
4801 160, 161, 162, 163, 164, 165, 166, 167,
4802 168, 169, 170, 171, 172, 173, 174, 175,
4803 176, 177, 178, 179, 180, 181, 182, 183,
4804 184, 185, 186, 187, 188, 189, 190, 191,
4805 192+32, 193+32, 194+32, 195+32, 196+32, 197+32, 198+32, 199+32,
4806 200+32, 201+32, 202+32, 203+32, 204+32, 205+32, 206+32, 207+32,
4807 208+32, 209+32, 210+32, 211+32, 212+32, 213+32, 214+32, 215,
4808 216+32, 217+32, 218+32, 219+32, 220+32, 221+32, 222+32, 223,
4809 224, 225, 226, 227, 228, 229, 230, 231,
4810 232, 233, 234, 235, 236, 237, 238, 239,
4811 240, 241, 242, 243, 244, 245, 246, 247,
4812 248, 249, 250, 251, 252, 253, 254, 255
4815 /* upper and title case of latin1 characters, modified so that the three tricky
4816 * ones are mapped to 255 (which is one of the three) */
4817 EXTCONST unsigned char PL_mod_latin1_uc[] = {
4818 0, 1, 2, 3, 4, 5, 6, 7,
4819 8, 9, 10, 11, 12, 13, 14, 15,
4820 16, 17, 18, 19, 20, 21, 22, 23,
4821 24, 25, 26, 27, 28, 29, 30, 31,
4822 32, 33, 34, 35, 36, 37, 38, 39,
4823 40, 41, 42, 43, 44, 45, 46, 47,
4824 48, 49, 50, 51, 52, 53, 54, 55,
4825 56, 57, 58, 59, 60, 61, 62, 63,
4826 64, 65, 66, 67, 68, 69, 70, 71,
4827 72, 73, 74, 75, 76, 77, 78, 79,
4828 80, 81, 82, 83, 84, 85, 86, 87,
4829 88, 89, 90, 91, 92, 93, 94, 95,
4830 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
4831 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
4832 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
4833 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
4834 128, 129, 130, 131, 132, 133, 134, 135,
4835 136, 137, 138, 139, 140, 141, 142, 143,
4836 144, 145, 146, 147, 148, 149, 150, 151,
4837 152, 153, 154, 155, 156, 157, 158, 159,
4838 160, 161, 162, 163, 164, 165, 166, 167,
4839 168, 169, 170, 171, 172, 173, 174, 175,
4840 176, 177, 178, 179, 180, 255 /*micro*/, 182, 183,
4841 184, 185, 186, 187, 188, 189, 190, 191,
4842 192, 193, 194, 195, 196, 197, 198, 199,
4843 200, 201, 202, 203, 204, 205, 206, 207,
4844 208, 209, 210, 211, 212, 213, 214, 215,
4845 216, 217, 218, 219, 220, 221, 222,
4846 #if UNICODE_MAJOR_VERSION > 2 \
4847 || (UNICODE_MAJOR_VERSION == 2 && UNICODE_DOT_VERSION >= 1 \
4848 && UNICODE_DOT_DOT_VERSION >= 8)
4850 #else /* uc(sharp s) is 'sharp s' itself in early unicode */
4853 224-32, 225-32, 226-32, 227-32, 228-32, 229-32, 230-32, 231-32,
4854 232-32, 233-32, 234-32, 235-32, 236-32, 237-32, 238-32, 239-32,
4855 240-32, 241-32, 242-32, 243-32, 244-32, 245-32, 246-32, 247,
4856 248-32, 249-32, 250-32, 251-32, 252-32, 253-32, 254-32, 255
4858 #endif /* !EBCDIC, but still in DOINIT */
4859 #else /* ! DOINIT */
4861 EXTCONST unsigned char PL_fold[];
4862 EXTCONST unsigned char PL_fold_latin1[];
4863 EXTCONST unsigned char PL_mod_latin1_uc[];
4864 EXTCONST unsigned char PL_latin1_lc[];
4868 #ifndef PERL_GLOBAL_STRUCT /* or perlvars.h */
4870 EXT unsigned char PL_fold_locale[256] = { /* Unfortunately not EXTCONST. */
4871 0, 1, 2, 3, 4, 5, 6, 7,
4872 8, 9, 10, 11, 12, 13, 14, 15,
4873 16, 17, 18, 19, 20, 21, 22, 23,
4874 24, 25, 26, 27, 28, 29, 30, 31,
4875 32, 33, 34, 35, 36, 37, 38, 39,
4876 40, 41, 42, 43, 44, 45, 46, 47,
4877 48, 49, 50, 51, 52, 53, 54, 55,
4878 56, 57, 58, 59, 60, 61, 62, 63,
4879 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
4880 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
4881 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
4882 'x', 'y', 'z', 91, 92, 93, 94, 95,
4883 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
4884 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
4885 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
4886 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
4887 128, 129, 130, 131, 132, 133, 134, 135,
4888 136, 137, 138, 139, 140, 141, 142, 143,
4889 144, 145, 146, 147, 148, 149, 150, 151,
4890 152, 153, 154, 155, 156, 157, 158, 159,
4891 160, 161, 162, 163, 164, 165, 166, 167,
4892 168, 169, 170, 171, 172, 173, 174, 175,
4893 176, 177, 178, 179, 180, 181, 182, 183,
4894 184, 185, 186, 187, 188, 189, 190, 191,
4895 192, 193, 194, 195, 196, 197, 198, 199,
4896 200, 201, 202, 203, 204, 205, 206, 207,
4897 208, 209, 210, 211, 212, 213, 214, 215,
4898 216, 217, 218, 219, 220, 221, 222, 223,
4899 224, 225, 226, 227, 228, 229, 230, 231,
4900 232, 233, 234, 235, 236, 237, 238, 239,
4901 240, 241, 242, 243, 244, 245, 246, 247,
4902 248, 249, 250, 251, 252, 253, 254, 255
4905 EXT unsigned char PL_fold_locale[256]; /* Unfortunately not EXTCONST. */
4907 #endif /* !PERL_GLOBAL_STRUCT */
4911 EXTCONST unsigned char PL_freq[] = {/* EBCDIC frequencies for mixed English/C */
4912 1, 2, 84, 151, 154, 155, 156, 157,
4913 165, 246, 250, 3, 158, 7, 18, 29,
4914 40, 51, 62, 73, 85, 96, 107, 118,
4915 129, 140, 147, 148, 149, 150, 152, 153,
4916 255, 6, 8, 9, 10, 11, 12, 13,
4917 14, 15, 24, 25, 26, 27, 28, 226,
4918 29, 30, 31, 32, 33, 43, 44, 45,
4919 46, 47, 48, 49, 50, 76, 77, 78,
4920 79, 80, 81, 82, 83, 84, 85, 86,
4921 87, 94, 95, 234, 181, 233, 187, 190,
4922 180, 96, 97, 98, 99, 100, 101, 102,
4923 104, 112, 182, 174, 236, 232, 229, 103,
4924 228, 226, 114, 115, 116, 117, 118, 119,
4925 120, 121, 122, 235, 176, 230, 194, 162,
4926 130, 131, 132, 133, 134, 135, 136, 137,
4927 138, 139, 201, 205, 163, 217, 220, 224,
4928 5, 248, 227, 244, 242, 255, 241, 231,
4929 240, 253, 16, 197, 19, 20, 21, 187,
4930 23, 169, 210, 245, 237, 249, 247, 239,
4931 168, 252, 34, 196, 36, 37, 38, 39,
4932 41, 42, 251, 254, 238, 223, 221, 213,
4933 225, 177, 52, 53, 54, 55, 56, 57,
4934 58, 59, 60, 61, 63, 64, 65, 66,
4935 67, 68, 69, 70, 71, 72, 74, 75,
4936 205, 208, 186, 202, 200, 218, 198, 179,
4937 178, 214, 88, 89, 90, 91, 92, 93,
4938 217, 166, 170, 207, 199, 209, 206, 204,
4939 160, 212, 105, 106, 108, 109, 110, 111,
4940 203, 113, 216, 215, 192, 175, 193, 243,
4941 172, 161, 123, 124, 125, 126, 127, 128,
4942 222, 219, 211, 195, 188, 193, 185, 184,
4943 191, 183, 141, 142, 143, 144, 145, 146
4945 #else /* ascii rather than ebcdic */
4946 EXTCONST unsigned char PL_freq[] = { /* letter frequencies for mixed English/C */
4947 1, 2, 84, 151, 154, 155, 156, 157,
4948 165, 246, 250, 3, 158, 7, 18, 29,
4949 40, 51, 62, 73, 85, 96, 107, 118,
4950 129, 140, 147, 148, 149, 150, 152, 153,
4951 255, 182, 224, 205, 174, 176, 180, 217,
4952 233, 232, 236, 187, 235, 228, 234, 226,
4953 222, 219, 211, 195, 188, 193, 185, 184,
4954 191, 183, 201, 229, 181, 220, 194, 162,
4955 163, 208, 186, 202, 200, 218, 198, 179,
4956 178, 214, 166, 170, 207, 199, 209, 206,
4957 204, 160, 212, 216, 215, 192, 175, 173,
4958 243, 172, 161, 190, 203, 189, 164, 230,
4959 167, 248, 227, 244, 242, 255, 241, 231,
4960 240, 253, 169, 210, 245, 237, 249, 247,
4961 239, 168, 252, 251, 254, 238, 223, 221,
4962 213, 225, 177, 197, 171, 196, 159, 4,
4963 5, 6, 8, 9, 10, 11, 12, 13,
4964 14, 15, 16, 17, 19, 20, 21, 22,
4965 23, 24, 25, 26, 27, 28, 30, 31,
4966 32, 33, 34, 35, 36, 37, 38, 39,
4967 41, 42, 43, 44, 45, 46, 47, 48,
4968 49, 50, 52, 53, 54, 55, 56, 57,
4969 58, 59, 60, 61, 63, 64, 65, 66,
4970 67, 68, 69, 70, 71, 72, 74, 75,
4971 76, 77, 78, 79, 80, 81, 82, 83,
4972 86, 87, 88, 89, 90, 91, 92, 93,
4973 94, 95, 97, 98, 99, 100, 101, 102,
4974 103, 104, 105, 106, 108, 109, 110, 111,
4975 112, 113, 114, 115, 116, 117, 119, 120,
4976 121, 122, 123, 124, 125, 126, 127, 128,
4977 130, 131, 132, 133, 134, 135, 136, 137,
4978 138, 139, 141, 142, 143, 144, 145, 146
4982 EXTCONST unsigned char PL_freq[];
4985 /* Although only used for debugging, these constants must be available in
4986 * non-debugging builds too, since they're used in ext/re/re_exec.c,
4987 * which has DEBUGGING enabled always */
4989 EXTCONST char* const PL_block_type[] = {
5005 EXTCONST char* PL_block_type[];
5008 /* These are all the compile time options that affect binary compatibility.
5009 Other compile time options that are binary compatible are in perl.c
5010 (in S_Internals_V()). Both are combined for the output of perl -V
5011 However, this string will be embedded in any shared perl library, which will
5012 allow us add a comparison check in perlmain.c in the near future. */
5014 EXTCONST char PL_bincompat_options[] =
5015 # ifdef DEBUG_LEAKING_SCALARS
5016 " DEBUG_LEAKING_SCALARS"
5018 # ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
5019 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
5027 # ifdef HAVE_INTERP_INTERN
5028 " HAVE_INTERP_INTERN"
5030 # ifdef MULTIPLICITY
5036 # ifdef PERLIO_LAYERS
5039 # ifdef PERL_DEBUG_READONLY_COW
5040 " PERL_DEBUG_READONLY_COW"
5042 # ifdef PERL_DEBUG_READONLY_OPS
5043 " PERL_DEBUG_READONLY_OPS"
5045 # ifdef PERL_GLOBAL_STRUCT
5046 " PERL_GLOBAL_STRUCT"
5048 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
5049 " PERL_GLOBAL_STRUCT_PRIVATE"
5051 # ifdef PERL_IMPLICIT_CONTEXT
5052 " PERL_IMPLICIT_CONTEXT"
5054 # ifdef PERL_IMPLICIT_SYS
5055 " PERL_IMPLICIT_SYS"
5060 # ifdef PERL_NEED_APPCTX
5063 # ifdef PERL_NEED_TIMESBASE
5064 " PERL_NEED_TIMESBASE"
5069 # ifdef PERL_SAWAMPERSAND
5070 " PERL_SAWAMPERSAND"
5072 # ifdef PERL_TRACK_MEMPOOL
5073 " PERL_TRACK_MEMPOOL"
5075 # ifdef PERL_USES_PL_PIDSTATUS
5076 " PERL_USES_PL_PIDSTATUS"
5078 # ifdef USE_64_BIT_ALL
5081 # ifdef USE_64_BIT_INT
5087 # ifdef USE_ITHREADS
5090 # ifdef USE_LARGE_FILES
5093 # ifdef USE_LOCALE_COLLATE
5094 " USE_LOCALE_COLLATE"
5096 # ifdef USE_LOCALE_NUMERIC
5097 " USE_LOCALE_NUMERIC"
5099 # ifdef USE_LOCALE_TIME
5102 # ifdef USE_LONG_DOUBLE
5108 # ifdef USE_QUADMATH
5111 # ifdef USE_REENTRANT_API
5112 " USE_REENTRANT_API"
5117 # ifdef VMS_DO_SOCKETS
5120 # ifdef VMS_SHORTEN_LONG_SYMBOLS
5121 " VMS_SHORTEN_LONG_SYMBOLS"
5123 # ifdef VMS_WE_ARE_CASE_SENSITIVE
5124 " VMS_SYMBOL_CASE_AS_IS"
5128 EXTCONST char PL_bincompat_options[];
5131 #ifndef PERL_SET_PHASE
5132 # define PERL_SET_PHASE(new_phase) \
5133 PERL_DTRACE_PROBE_PHASE(new_phase); \
5134 PL_phase = new_phase;
5137 /* The interpreter phases. If these ever change, PL_phase_names right below will
5138 * need to be updated accordingly. */
5140 PERL_PHASE_CONSTRUCT = 0,
5141 PERL_PHASE_START = 1,
5142 PERL_PHASE_CHECK = 2,
5143 PERL_PHASE_INIT = 3,
5146 PERL_PHASE_DESTRUCT = 6
5150 EXTCONST char *const PL_phase_names[] = {
5160 EXTCONST char *const PL_phase_names[];
5164 /* Do not use this macro. It only exists for extensions that rely on PL_dirty
5165 * instead of using the newer PL_phase, which provides everything PL_dirty
5166 * provided, and more. */
5167 # define PL_dirty cBOOL(PL_phase == PERL_PHASE_DESTRUCT)
5169 # define PL_amagic_generation PL_na
5170 # define PL_encoding ((SV *)NULL)
5171 #endif /* !PERL_CORE */
5173 #define PL_hints PL_compiling.cop_hints
5174 #define PL_maxo MAXO
5178 /*****************************************************************************/
5179 /* This lexer/parser stuff is currently global since yacc is hard to reenter */
5180 /*****************************************************************************/
5181 /* XXX This needs to be revisited, since BEGIN makes yacc re-enter... */
5184 /* LynxOS defines these in scsi.h which is included via ioctl.h */
5193 #define LEX_NOTPARSING 11 /* borrowed from toke.c */
5201 XATTRBLOCK, /* next token should be an attribute or block */
5202 XATTRTERM, /* next token should be an attribute, or block in a term */
5206 XTERMORDORDOR /* evil hack */
5207 /* update exp_name[] in toke.c if adding to this enum */
5210 #define KEY_sigvar 0xFFFF /* fake keyword representing a signature var */
5212 /* Hints are now stored in a dedicated U32, so the bottom 8 bits are no longer
5213 special and there is no need for HINT_PRIVATE_MASK for COPs
5214 However, bitops store HINT_INTEGER in their op_private.
5216 NOTE: The typical module using these has the bit value hard-coded, so don't
5217 blindly change the values of these.
5219 If we run out of bits, the 2 locale ones could be combined. The PARTIAL one
5220 is for "use locale 'FOO'" which excludes some categories. It requires going
5221 to %^H to find out which are in and which are out. This could be extended
5222 for the normal case of a plain HINT_LOCALE, so that %^H would be used for
5224 #define HINT_INTEGER 0x00000001 /* integer pragma */
5225 #define HINT_STRICT_REFS 0x00000002 /* strict pragma */
5226 #define HINT_LOCALE 0x00000004 /* locale pragma */
5227 #define HINT_BYTES 0x00000008 /* bytes pragma */
5228 #define HINT_LOCALE_PARTIAL 0x00000010 /* locale, but a subset of categories */
5230 #define HINT_EXPLICIT_STRICT_REFS 0x00000020 /* strict.pm */
5231 #define HINT_EXPLICIT_STRICT_SUBS 0x00000040 /* strict.pm */
5232 #define HINT_EXPLICIT_STRICT_VARS 0x00000080 /* strict.pm */
5234 #define HINT_BLOCK_SCOPE 0x00000100
5235 #define HINT_STRICT_SUBS 0x00000200 /* strict pragma */
5236 #define HINT_STRICT_VARS 0x00000400 /* strict pragma */
5237 #define HINT_UNI_8_BIT 0x00000800 /* unicode_strings feature */
5239 /* The HINT_NEW_* constants are used by the overload pragma */
5240 #define HINT_NEW_INTEGER 0x00001000
5241 #define HINT_NEW_FLOAT 0x00002000
5242 #define HINT_NEW_BINARY 0x00004000
5243 #define HINT_NEW_STRING 0x00008000
5244 #define HINT_NEW_RE 0x00010000
5245 #define HINT_LOCALIZE_HH 0x00020000 /* %^H needs to be copied */
5246 #define HINT_LEXICAL_IO_IN 0x00040000 /* ${^OPEN} is set for input */
5247 #define HINT_LEXICAL_IO_OUT 0x00080000 /* ${^OPEN} is set for output */
5249 #define HINT_RE_TAINT 0x00100000 /* re pragma */
5250 #define HINT_RE_EVAL 0x00200000 /* re pragma */
5252 #define HINT_FILETEST_ACCESS 0x00400000 /* filetest pragma */
5253 #define HINT_UTF8 0x00800000 /* utf8 pragma */
5255 #define HINT_NO_AMAGIC 0x01000000 /* overloading pragma */
5257 #define HINT_RE_FLAGS 0x02000000 /* re '/xism' pragma */
5259 #define HINT_FEATURE_MASK 0x1c000000 /* 3 bits for feature bundles */
5261 /* Note: Used for HINT_M_VMSISH_*,
5262 currently defined by vms/vmsish.h:
5267 /* The following are stored in $^H{sort}, not in PL_hints */
5268 #define HINT_SORT_STABLE 0x00000100 /* sort styles */
5269 #define HINT_SORT_UNSTABLE 0x00000200
5271 /* flags for PL_sawampersand */
5273 #define SAWAMPERSAND_LEFT 1 /* saw $` */
5274 #define SAWAMPERSAND_MIDDLE 2 /* saw $& */
5275 #define SAWAMPERSAND_RIGHT 4 /* saw $' */
5277 #ifndef PERL_SAWAMPERSAND
5278 # define PL_sawampersand \
5279 (SAWAMPERSAND_LEFT|SAWAMPERSAND_MIDDLE|SAWAMPERSAND_RIGHT)
5282 /* Used for debugvar magic */
5283 #define DBVARMG_SINGLE 0
5284 #define DBVARMG_TRACE 1
5285 #define DBVARMG_SIGNAL 2
5286 #define DBVARMG_COUNT 3
5288 #define PL_DBsingle_iv (PL_DBcontrol[DBVARMG_SINGLE])
5289 #define PL_DBtrace_iv (PL_DBcontrol[DBVARMG_TRACE])
5290 #define PL_DBsignal_iv (PL_DBcontrol[DBVARMG_SIGNAL])
5292 /* Various states of the input record separator SV (rs) */
5293 #define RsSNARF(sv) (! SvOK(sv))
5294 #define RsSIMPLE(sv) (SvOK(sv) && (! SvPOK(sv) || SvCUR(sv)))
5295 #define RsPARA(sv) (SvPOK(sv) && ! SvCUR(sv))
5296 #define RsRECORD(sv) (SvROK(sv) && (SvIV(SvRV(sv)) > 0))
5298 /* A struct for keeping various DEBUGGING related stuff,
5299 * neatly packed. Currently only scratch variables for
5300 * constructing debug output are included. Needed always,
5301 * not just when DEBUGGING, though, because of the re extension. c*/
5302 struct perl_debug_pad {
5306 #define PERL_DEBUG_PAD(i) &(PL_debug_pad.pad[i])
5307 #define PERL_DEBUG_PAD_ZERO(i) (SvPVX(PERL_DEBUG_PAD(i))[0] = 0, \
5308 (((XPV*) SvANY(PERL_DEBUG_PAD(i)))->xpv_cur = 0), \
5311 /* Enable variables which are pointers to functions */
5312 typedef void (*peep_t)(pTHX_ OP* o);
5313 typedef regexp* (*regcomp_t) (pTHX_ char* exp, char* xend, PMOP* pm);
5314 typedef I32 (*regexec_t) (pTHX_ regexp* prog, char* stringarg,
5315 char* strend, char* strbeg, I32 minend,
5316 SV* screamer, void* data, U32 flags);
5317 typedef char* (*re_intuit_start_t) (pTHX_ regexp *prog, SV *sv,
5318 char *strpos, char *strend,
5320 re_scream_pos_data *d);
5321 typedef SV* (*re_intuit_string_t) (pTHX_ regexp *prog);
5322 typedef void (*regfree_t) (pTHX_ struct regexp* r);
5323 typedef regexp* (*regdupe_t) (pTHX_ const regexp* r, CLONE_PARAMS *param);
5324 typedef I32 (*re_fold_t)(const char *, char const *, I32);
5326 typedef void (*DESTRUCTORFUNC_NOCONTEXT_t) (void*);
5327 typedef void (*DESTRUCTORFUNC_t) (pTHX_ void*);
5328 typedef void (*SVFUNC_t) (pTHX_ SV* const);
5329 typedef I32 (*SVCOMPARE_t) (pTHX_ SV* const, SV* const);
5330 typedef void (*XSINIT_t) (pTHX);
5331 typedef void (*ATEXIT_t) (pTHX_ void*);
5332 typedef void (*XSUBADDR_t) (pTHX_ CV *);
5334 typedef OP* (*Perl_ppaddr_t)(pTHX);
5335 typedef OP* (*Perl_check_t) (pTHX_ OP*);
5336 typedef void(*Perl_ophook_t)(pTHX_ OP*);
5337 typedef int (*Perl_keyword_plugin_t)(pTHX_ char*, STRLEN, OP**);
5338 typedef void(*Perl_cpeep_t)(pTHX_ OP *, OP *);
5340 typedef void(*globhook_t)(pTHX);
5342 #define KEYWORD_PLUGIN_DECLINE 0
5343 #define KEYWORD_PLUGIN_STMT 1
5344 #define KEYWORD_PLUGIN_EXPR 2
5346 /* Interpreter exitlist entry */
5347 typedef struct exitlistentry {
5348 void (*fn) (pTHX_ void*);
5350 } PerlExitListEntry;
5352 /* if you only have signal() and it resets on each signal, FAKE_PERSISTENT_SIGNAL_HANDLERS fixes */
5353 /* These have to be before perlvars.h */
5354 #if !defined(HAS_SIGACTION) && defined(VMS)
5355 # define FAKE_PERSISTENT_SIGNAL_HANDLERS
5357 /* if we're doing kill() with sys$sigprc on VMS, FAKE_DEFAULT_SIGNAL_HANDLERS */
5358 #if defined(KILL_BY_SIGPRC)
5359 # define FAKE_DEFAULT_SIGNAL_HANDLERS
5362 #if !defined(MULTIPLICITY)
5364 struct interpreter {
5370 /* If we have multiple interpreters define a struct
5371 holding variables which must be per-interpreter
5372 If we don't have threads anything that would have
5373 be per-thread is per-interpreter.
5376 /* Set up PERLVAR macros for populating structs */
5377 # define PERLVAR(prefix,var,type) type prefix##var;
5379 /* 'var' is an array of length 'n' */
5380 # define PERLVARA(prefix,var,n,type) type prefix##var[n];
5382 /* initialize 'var' to init' */
5383 # define PERLVARI(prefix,var,type,init) type prefix##var;
5385 /* like PERLVARI, but make 'var' a const */
5386 # define PERLVARIC(prefix,var,type,init) type prefix##var;
5388 struct interpreter {
5389 # include "intrpvar.h"
5392 EXTCONST U16 PL_interp_size
5393 INIT(sizeof(struct interpreter));
5395 # define PERL_INTERPRETER_SIZE_UPTO_MEMBER(member) \
5396 STRUCT_OFFSET(struct interpreter, member) + \
5397 sizeof(((struct interpreter*)0)->member)
5399 /* This will be useful for subsequent releases, because this has to be the
5400 same in your libperl as in main(), else you have a mismatch and must abort.
5402 EXTCONST U16 PL_interp_size_5_18_0
5403 INIT(PERL_INTERPRETER_SIZE_UPTO_MEMBER(PERL_LAST_5_18_0_INTERP_MEMBER));
5406 # ifdef PERL_GLOBAL_STRUCT
5407 /* MULTIPLICITY is automatically defined when PERL_GLOBAL_STRUCT is defined,
5408 hence it's safe and sane to nest this within #ifdef MULTIPLICITY */
5411 # include "perlvars.h"
5414 EXTCONST U16 PL_global_struct_size
5415 INIT(sizeof(struct perl_vars));
5418 # ifndef PERL_GLOBAL_STRUCT_PRIVATE
5419 EXT struct perl_vars PL_Vars;
5420 EXT struct perl_vars *PL_VarsPtr INIT(&PL_Vars);
5421 # undef PERL_GET_VARS
5422 # define PERL_GET_VARS() PL_VarsPtr
5423 # endif /* !PERL_GLOBAL_STRUCT_PRIVATE */
5424 # else /* PERL_CORE */
5425 # if !defined(__GNUC__) || !defined(WIN32)
5428 struct perl_vars *PL_VarsPtr;
5429 # define PL_Vars (*((PL_VarsPtr) \
5430 ? PL_VarsPtr : (PL_VarsPtr = Perl_GetVars(aTHX))))
5431 # endif /* PERL_CORE */
5432 # endif /* PERL_GLOBAL_STRUCT */
5434 /* Done with PERLVAR macros for now ... */
5440 #endif /* MULTIPLICITY */
5442 struct tempsym; /* defined in pp_pack.c */
5449 #define PERL_CKDEF(s) PERL_CALLCONV OP *s (pTHX_ OP *o);
5450 #define PERL_PPDEF(s) PERL_CALLCONV OP *s (pTHX);
5453 # include "malloc_ctl.h"
5457 * This provides a layer of functions and macros to ensure extensions will
5458 * get to use the same RTL functions as the core.
5461 # include "win32iop.h"
5467 /* this has structure inits, so it cannot be included before here */
5470 /* The following must follow proto.h as #defines mess up syntax */
5472 #if !defined(PERL_FOR_X2P)
5473 # include "embedvar.h"
5476 /* Now include all the 'global' variables
5477 * If we don't have threads or multiple interpreters
5478 * these include variables that would have been their struct-s
5481 #define PERLVAR(prefix,var,type) EXT type PL_##var;
5482 #define PERLVARA(prefix,var,n,type) EXT type PL_##var[n];
5483 #define PERLVARI(prefix,var,type,init) EXT type PL_##var INIT(init);
5484 #define PERLVARIC(prefix,var,type,init) EXTCONST type PL_##var INIT(init);
5486 #if !defined(MULTIPLICITY)
5488 # include "intrpvar.h"
5490 # define PL_sv_yes (PL_sv_immortals[0])
5491 # define PL_sv_undef (PL_sv_immortals[1])
5492 # define PL_sv_no (PL_sv_immortals[2])
5493 # define PL_sv_zero (PL_sv_immortals[3])
5497 /* All core uses now exterminated. Ensure no zombies can return: */
5501 /* Now all the config stuff is setup we can include embed.h
5502 In particular, need the relevant *ish file included already, as it may
5503 define HAVE_INTERP_INTERN */
5506 #ifndef PERL_GLOBAL_STRUCT
5509 # include "perlvars.h"
5519 #if !defined(MULTIPLICITY)
5520 /* Set up PERLVAR macros for populating structs */
5521 # define PERLVAR(prefix,var,type) type prefix##var;
5522 /* 'var' is an array of length 'n' */
5523 # define PERLVARA(prefix,var,n,type) type prefix##var[n];
5524 /* initialize 'var' to init' */
5525 # define PERLVARI(prefix,var,type,init) type prefix##var;
5526 /* like PERLVARI, but make 'var' a const */
5527 # define PERLVARIC(prefix,var,type,init) type prefix##var;
5529 /* this is never instantiated, is it just used for sizeof(struct PerlHandShakeInterpreter) */
5530 struct PerlHandShakeInterpreter {
5531 # include "intrpvar.h"
5541 /* dummy variables that hold pointers to both runops functions, thus forcing
5542 * them *both* to get linked in (useful for Peek.xs, debugging etc) */
5544 EXTCONST runops_proc_t PL_runops_std
5545 INIT(Perl_runops_standard);
5546 EXTCONST runops_proc_t PL_runops_dbg
5547 INIT(Perl_runops_debug);
5549 #define EXT_MGVTBL EXTCONST MGVTBL
5551 #define PERL_MAGIC_READONLY_ACCEPTABLE 0x40
5552 #define PERL_MAGIC_VALUE_MAGIC 0x80
5553 #define PERL_MAGIC_VTABLE_MASK 0x3F
5554 #define PERL_MAGIC_TYPE_READONLY_ACCEPTABLE(t) \
5555 (PL_magic_data[(U8)(t)] & PERL_MAGIC_READONLY_ACCEPTABLE)
5556 #define PERL_MAGIC_TYPE_IS_VALUE_MAGIC(t) \
5557 (PL_magic_data[(U8)(t)] & PERL_MAGIC_VALUE_MAGIC)
5559 #include "mg_vtable.h"
5562 EXTCONST U8 PL_magic_data[256] =
5564 # include "umg_data.h"
5566 # include "mg_data.h"
5570 EXTCONST U8 PL_magic_data[256];
5574 /* NL IV NV PV INV PI PN MG RX GV LV AV HV CV FM IO */
5576 PL_valid_types_IVX[] = { 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0 };
5578 PL_valid_types_NVX[] = { 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0 };
5580 PL_valid_types_PVX[] = { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1 };
5582 PL_valid_types_RV[] = { 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1 };
5584 PL_valid_types_IV_set[] = { 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1 };
5586 PL_valid_types_NV_set[] = { 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
5590 EXTCONST bool PL_valid_types_IVX[];
5591 EXTCONST bool PL_valid_types_NVX[];
5592 EXTCONST bool PL_valid_types_PVX[];
5593 EXTCONST bool PL_valid_types_RV[];
5594 EXTCONST bool PL_valid_types_IV_set[];
5595 EXTCONST bool PL_valid_types_NV_set[];
5599 /* In C99 we could use designated (named field) union initializers.
5600 * In C89 we need to initialize the member declared first.
5601 * In C++ we need extern C initializers.
5603 * With the U8_NV version you will want to have inner braces,
5604 * while with the NV_U8 use just the NV. */
5606 #define INFNAN_U8_NV_DECL EXTCONST union { U8 u8[NVSIZE]; NV nv; }
5607 #define INFNAN_NV_U8_DECL EXTCONST union { NV nv; U8 u8[NVSIZE]; }
5609 /* if these never got defined, they need defaults */
5610 #ifndef PERL_SET_CONTEXT
5611 # define PERL_SET_CONTEXT(i) PERL_SET_INTERP(i)
5614 #ifndef PERL_GET_CONTEXT
5615 # define PERL_GET_CONTEXT PERL_GET_INTERP
5618 #ifndef PERL_GET_THX
5619 # define PERL_GET_THX ((void*)NULL)
5622 #ifndef PERL_SET_THX
5623 # define PERL_SET_THX(t) NOOP
5628 /* The tables below are adapted from
5629 * https://bjoern.hoehrmann.de/utf-8/decoder/dfa/, which requires this copyright
5632 Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
5634 Permission is hereby granted, free of charge, to any person obtaining a copy of
5635 this software and associated documentation files (the "Software"), to deal in
5636 the Software without restriction, including without limitation the rights to
5637 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
5638 of the Software, and to permit persons to whom the Software is furnished to do
5639 so, subject to the following conditions:
5641 The above copyright notice and this permission notice shall be included in all
5642 copies or substantial portions of the Software.
5644 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
5645 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
5646 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
5647 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
5648 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
5649 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
5655 # if 0 /* This is the original table given in
5656 https://bjoern.hoehrmann.de/utf-8/decoder/dfa/ */
5657 static U8 utf8d_C9[] = {
5658 /* The first part of the table maps bytes to character classes that
5659 * to reduce the size of the transition table and create bitmasks. */
5660 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-1F*/
5661 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-3F*/
5662 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-5F*/
5663 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /*-7F*/
5664 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, /*-9F*/
5665 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, /*-BF*/
5666 8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /*-DF*/
5667 10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8, /*-FF*/
5669 /* The second part is a transition table that maps a combination
5670 * of a state of the automaton and a character class to a state. */
5671 0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12,
5672 12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12,
5673 12,12,12,12,12,12,12,24,12,12,12,12, 12,24,12,12,12,12,12,12,12,24,12,12,
5674 12,12,12,12,12,12,12,36,12,36,12,12, 12,36,12,12,12,12,12,36,12,36,12,12,
5675 12,36,12,12,12,12,12,12,12,12,12,12
5680 /* This is a version of the above table customized for Perl that doesn't
5681 * exclude surrogates and accepts start bytes up through FD (FE on 64-bit
5682 * machines). The classes have been renumbered so that the patterns are more
5683 * evident in the table. The class numbers for start bytes are constrained so
5684 * that they can be used as a shift count for masking off the leading one bits.
5685 * It would make the code simpler if start byte FF could also be handled, but
5686 * doing so would mean adding nodes for each of continuation bytes 6-12
5687 * remaining, and two more nodes for overlong detection (a total of 9), and
5688 * there is room only for 4 more nodes unless we make the array U16 instead of
5693 * 80-81 7 Not legal immediately after start bytes E0 F0 F8 FC
5695 * 82-83 8 Not legal immediately after start bytes E0 F0 F8 FC
5696 * 84-87 9 Not legal immediately after start bytes E0 F0 F8
5697 * 88-8F 10 Not legal immediately after start bytes E0 F0
5698 * 90-9F 11 Not legal immediately after start byte E0
5710 * FE 17 (or 1 on 32-bit machines, since it overflows)
5714 EXTCONST U8 PL_extended_utf8_dfa_tab[] = {
5715 /* The first part of the table maps bytes to character classes to reduce
5716 * the size of the transition table and create bitmasks. */
5717 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/
5718 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/
5719 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/
5720 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/
5721 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/
5722 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/
5723 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/
5724 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/
5725 7, 7, 8, 8, 9, 9, 9, 9,10,10,10,10,10,10,10,10, /*80-8F*/
5726 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*90-9F*/
5727 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12, /*A0-AF*/
5728 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12, /*B0-BF*/
5729 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/
5730 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/
5731 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /*E0-EF*/
5732 14, 4, 4, 4, 4, 4, 4, 4,15, 5, 5, 5,16, 6, /*F0-FD*/
5740 /* The second part is a transition table that maps a combination
5741 * of a state of the automaton and a character class to a new state, called a
5742 * node. The nodes are:
5743 * N0 The initial state, and final accepting one.
5744 * N1 Any one continuation byte (80-BF) left. This is transitioned to
5745 * immediately when the start byte indicates a two-byte sequence
5746 * N2 Any two continuation bytes left.
5747 * N3 Any three continuation bytes left.
5748 * N4 Any four continuation bytes left.
5749 * N5 Any five continuation bytes left.
5750 * N6 Start byte is E0. Continuation bytes 80-9F are illegal (overlong);
5751 * the other continuations transition to N1
5752 * N7 Start byte is F0. Continuation bytes 80-8F are illegal (overlong);
5753 * the other continuations transition to N2
5754 * N8 Start byte is F8. Continuation bytes 80-87 are illegal (overlong);
5755 * the other continuations transition to N3
5756 * N9 Start byte is FC. Continuation bytes 80-83 are illegal (overlong);
5757 * the other continuations transition to N4
5758 * N10 Start byte is FE. Continuation bytes 80-81 are illegal (overlong);
5759 * the other continuations transition to N5
5760 * 1 Reject. All transitions not mentioned above (except the single
5761 * byte ones (as they are always legal) are to this state.
5764 # define NUM_CLASSES 18
5766 # define N1 ((N0) + NUM_CLASSES)
5767 # define N2 ((N1) + NUM_CLASSES)
5768 # define N3 ((N2) + NUM_CLASSES)
5769 # define N4 ((N3) + NUM_CLASSES)
5770 # define N5 ((N4) + NUM_CLASSES)
5771 # define N6 ((N5) + NUM_CLASSES)
5772 # define N7 ((N6) + NUM_CLASSES)
5773 # define N8 ((N7) + NUM_CLASSES)
5774 # define N9 ((N8) + NUM_CLASSES)
5775 # define N10 ((N9) + NUM_CLASSES)
5777 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 */
5778 /*N0*/ 0, 1,N1,N2,N3,N4,N5, 1, 1, 1, 1, 1, 1,N6,N7,N8,N9,N10,
5779 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
5780 /*N2*/ 1, 1, 1, 1, 1, 1, 1,N1,N1,N1,N1,N1,N1, 1, 1, 1, 1, 1,
5781 /*N3*/ 1, 1, 1, 1, 1, 1, 1,N2,N2,N2,N2,N2,N2, 1, 1, 1, 1, 1,
5782 /*N4*/ 1, 1, 1, 1, 1, 1, 1,N3,N3,N3,N3,N3,N3, 1, 1, 1, 1, 1,
5783 /*N5*/ 1, 1, 1, 1, 1, 1, 1,N4,N4,N4,N4,N4,N4, 1, 1, 1, 1, 1,
5785 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N1, 1, 1, 1, 1, 1,
5786 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N2,N2, 1, 1, 1, 1, 1,
5787 /*N8*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,N3,N3,N3, 1, 1, 1, 1, 1,
5788 /*N9*/ 1, 1, 1, 1, 1, 1, 1, 1, 1,N4,N4,N4,N4, 1, 1, 1, 1, 1,
5789 /*N10*/ 1, 1, 1, 1, 1, 1, 1, 1,N5,N5,N5,N5,N5, 1, 1, 1, 1, 1,
5792 /* And below is a version of the above table that accepts only strict UTF-8.
5793 * Hence no surrogates nor non-characters, nor non-Unicode. Thus, if the input
5794 * passes this dfa, it will be for a well-formed, non-problematic code point
5795 * that can be returned immediately.
5797 * The "Implementation details" portion of
5798 * https://bjoern.hoehrmann.de/utf-8/decoder/dfa/ shows how
5799 * the first portion of the table maps each possible byte into a character
5800 * class. And that the classes for those bytes which are start bytes have been
5801 * carefully chosen so they serve as well to be used as a shift value to mask
5802 * off the leading 1 bits of the start byte. Unfortunately the addition of
5803 * being able to distinguish non-characters makes this not fully work. This is
5804 * because, now, the start bytes E1-EF have to be broken into 3 classes instead
5806 * 1) ED because it could be a surrogate
5807 * 2) EF because it could be a non-character
5808 * 3) the rest, which can never evaluate to a problematic code point.
5810 * Each of E1-EF has three leading 1 bits, then a 0. That means we could use a
5811 * shift (and hence class number) of either 3 or 4 to get a mask that works.
5812 * But that only allows two categories, and we need three. khw made the
5813 * decision to therefore treat the ED start byte as an error, so that the dfa
5814 * drops out immediately for that. In the dfa, classes 3 and 4 are used to
5815 * distinguish EF vs the rest. Then special code is used to deal with ED,
5816 * that's executed only when the dfa drops out. The code points started by ED
5817 * are half surrogates, and half hangul syllables. This means that 2048 of the
5818 * the hangul syllables (about 18%) take longer than all other non-problematic
5819 * code points to handle.
5821 * The changes to handle non-characters requires the addition of states and
5822 * classes to the dfa. (See the section on "Mapping bytes to character
5823 * classes" in the linked-to document for further explanation of the original
5847 * F1-F3 6 (6 bits can be stripped)
5848 * F4 5 (only 5 can be stripped)
5852 EXTCONST U8 PL_strict_utf8_dfa_tab[] = {
5853 /* The first part of the table maps bytes to character classes to reduce
5854 * the size of the transition table and create bitmasks. */
5855 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/
5856 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/
5857 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/
5858 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/
5859 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/
5860 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/
5861 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/
5862 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/
5863 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,10, /*80-8F*/
5864 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12, /*90-9F*/
5865 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14, /*A0-AF*/
5866 15,15,15,15,15,15,15,16,15,15,15,15,15,15,17,18, /*B0-BF*/
5867 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/
5868 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/
5869 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 3, 4, /*E0-EF*/
5870 8, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /*F0-FF*/
5872 /* The second part is a transition table that maps a combination
5873 * of a state of the automaton and a character class to a new state, called a
5874 * node. The nodes are:
5875 * N0 The initial state, and final accepting one.
5876 * N1 Any one continuation byte (80-BF) left. This is transitioned to
5877 * immediately when the start byte indicates a two-byte sequence
5878 * N2 Any two continuation bytes left.
5879 * N3 Start byte is E0. Continuation bytes 80-9F are illegal (overlong);
5880 * the other continuations transition to state N1
5881 * N4 Start byte is EF. Continuation byte B7 transitions to N8; BF to N9;
5882 * the other continuations transitions to N1
5883 * N5 Start byte is F0. Continuation bytes 80-8F are illegal (overlong);
5884 * [9AB]F transition to N10; the other continuations to N2.
5885 * N6 Start byte is F[123]. Continuation bytes [89AB]F transition
5886 * to N10; the other continuations to N2.
5887 * N7 Start byte is F4. Continuation bytes 90-BF are illegal
5888 * (non-unicode); 8F transitions to N10; the other continuations to N2
5889 * N8 Initial sequence is EF B7. Continuation bytes 90-AF are illegal
5890 * (non-characters); the other continuations transition to N0.
5891 * N9 Initial sequence is EF BF. Continuation bytes BE and BF are illegal
5892 * (non-characters); the other continuations transition to N0.
5893 * N10 Initial sequence is one of: F0 [9-B]F; F[123] [8-B]F; or F4 8F.
5894 * Continuation byte BF transitions to N11; the other continuations to
5896 * N11 Initial sequence is the two bytes given in N10 followed by BF.
5897 * Continuation bytes BE and BF are illegal (non-characters); the other
5898 * continuations transition to N0.
5899 * 1 Reject. All transitions not mentioned above (except the single
5900 * byte ones (as they are always legal) are to this state.
5914 # define NUM_CLASSES 19
5916 # define N1 ((N0) + NUM_CLASSES)
5917 # define N2 ((N1) + NUM_CLASSES)
5918 # define N3 ((N2) + NUM_CLASSES)
5919 # define N4 ((N3) + NUM_CLASSES)
5920 # define N5 ((N4) + NUM_CLASSES)
5921 # define N6 ((N5) + NUM_CLASSES)
5922 # define N7 ((N6) + NUM_CLASSES)
5923 # define N8 ((N7) + NUM_CLASSES)
5924 # define N9 ((N8) + NUM_CLASSES)
5925 # define N10 ((N9) + NUM_CLASSES)
5926 # define N11 ((N10) + NUM_CLASSES)
5928 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 */
5929 /*N0*/ 0, 1, N1, N2, N4, N7, N6, N3, N5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
5930 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
5931 /*N2*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N1, N1, N1,
5933 /*N3*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1,
5934 /*N4*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N8, N1, N9,
5935 /*N5*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, N2,N10, N2, N2, N2,N10,
5936 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, N2,N10, N2,N10, N2, N2, N2,N10,
5937 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2,N10, 1, 1, 1, 1, 1, 1, 1, 1,
5938 /*N8*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
5939 /*N9*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
5940 /*N10*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1, N1, N1, N1, N1, N1, N1,N11,
5941 /*N11*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
5944 /* And below is yet another version of the above tables that accepts only UTF-8
5945 * as defined by Corregidum #9. Hence no surrogates nor non-Unicode, but
5946 * it allows non-characters. This is isomorphic to the original table
5947 * in https://bjoern.hoehrmann.de/utf-8/decoder/dfa/
5961 * F1-F3 6 (6 bits can be stripped)
5962 * F4 5 (only 5 can be stripped)
5966 EXTCONST U8 PL_c9_utf8_dfa_tab[] = {
5967 /* The first part of the table maps bytes to character classes to reduce
5968 * the size of the transition table and create bitmasks. */
5969 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*00-0F*/
5970 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*10-1F*/
5971 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*20-2F*/
5972 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*30-3F*/
5973 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*40-4F*/
5974 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*50-5F*/
5975 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*60-6F*/
5976 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*70-7F*/
5977 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, /*80-8F*/
5978 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10, /*90-9F*/
5979 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*A0-AF*/
5980 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, /*B0-BF*/
5981 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*C0-CF*/
5982 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /*D0-DF*/
5983 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3, /*E0-EF*/
5984 8, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /*F0-FF*/
5986 /* The second part is a transition table that maps a combination
5987 * of a state of the automaton and a character class to a new state, called a
5988 * node. The nodes are:
5989 * N0 The initial state, and final accepting one.
5990 * N1 Any one continuation byte (80-BF) left. This is transitioned to
5991 * immediately when the start byte indicates a two-byte sequence
5992 * N2 Any two continuation bytes left.
5993 * N3 Any three continuation bytes left.
5994 * N4 Start byte is E0. Continuation bytes 80-9F are illegal (overlong);
5995 * the other continuations transition to state N1
5996 * N5 Start byte is ED. Continuation bytes A0-BF all lead to surrogates,
5997 * so are illegal. The other continuations transition to state N1.
5998 * N6 Start byte is F0. Continuation bytes 80-8F are illegal (overlong);
5999 * the other continuations transition to N2
6000 * N7 Start byte is F4. Continuation bytes 90-BF are illegal
6001 * (non-unicode); the other continuations transition to N2
6002 * 1 Reject. All transitions not mentioned above (except the single
6003 * byte ones (as they are always legal) are to this state.
6015 # define NUM_CLASSES 12
6017 # define N1 ((N0) + NUM_CLASSES)
6018 # define N2 ((N1) + NUM_CLASSES)
6019 # define N3 ((N2) + NUM_CLASSES)
6020 # define N4 ((N3) + NUM_CLASSES)
6021 # define N5 ((N4) + NUM_CLASSES)
6022 # define N6 ((N5) + NUM_CLASSES)
6023 # define N7 ((N6) + NUM_CLASSES)
6025 /*Class: 0 1 2 3 4 5 6 7 8 9 10 11 */
6026 /*N0*/ 0, 1, N1, N2, N5, N7, N3, N4, N6, 1, 1, 1,
6027 /*N1*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0,
6028 /*N2*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, N1,
6029 /*N3*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, N2, N2,
6031 /*N4*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N1,
6032 /*N5*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N1, N1, 1,
6033 /*N6*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, N2,
6034 /*N7*/ 1, 1, 1, 1, 1, 1, 1, 1, 1, N2, 1, 1,
6037 # else /* End of is DOINIT */
6039 EXTCONST U8 PL_extended_utf8_dfa_tab[];
6040 EXTCONST U8 PL_strict_utf8_dfa_tab[];
6041 EXTCONST U8 PL_c9_utf8_dfa_tab[];
6044 #endif /* end of isn't EBCDIC */
6046 #ifndef PERL_NO_INLINE_FUNCTIONS
6047 /* Static inline funcs that depend on includes and declarations above.
6048 Some of these reference functions in the perl object files, and some
6049 compilers aren't smart enough to eliminate unused static inline
6050 functions, so including this file in source code can cause link errors
6051 even if the source code uses none of the functions. Hence including these
6052 can be be suppressed by setting PERL_NO_INLINE_FUNCTIONS. Doing this will
6053 (obviously) result in unworkable XS code, but allows simple probing code
6054 to continue to work, because it permits tests to include the perl headers
6055 for definitions without creating a link dependency on the perl library
6056 (which may not exist yet).
6059 # include "inline.h"
6062 #include "overload.h"
6071 CV* table[NofAMmeth];
6073 struct am_table_short {
6079 typedef struct am_table AMT;
6080 typedef struct am_table_short AMTS;
6082 #define AMGfallNEVER 1
6084 #define AMGfallYES 3
6086 #define AMTf_AMAGIC 1
6087 #define AMT_AMAGIC(amt) ((amt)->flags & AMTf_AMAGIC)
6088 #define AMT_AMAGIC_on(amt) ((amt)->flags |= AMTf_AMAGIC)
6089 #define AMT_AMAGIC_off(amt) ((amt)->flags &= ~AMTf_AMAGIC)
6091 #define StashHANDLER(stash,meth) gv_handler((stash),CAT2(meth,_amg))
6094 * some compilers like to redefine cos et alia as faster
6095 * (and less accurate?) versions called F_cos et cetera (Quidquid
6096 * latine dictum sit, altum viditur.) This trick collides with
6097 * the Perl overloading (amg). The following #defines fool both.
6102 # define F_atan2_amg atan2_amg
6105 # define F_cos_amg cos_amg
6108 # define F_exp_amg exp_amg
6111 # define F_log_amg log_amg
6114 # define F_pow_amg pow_amg
6117 # define F_sin_amg sin_amg
6120 # define F_sqrt_amg sqrt_amg
6122 #endif /* _FASTMATH */
6124 #define PERLDB_ALL (PERLDBf_SUB | PERLDBf_LINE | \
6125 PERLDBf_NOOPT | PERLDBf_INTER | \
6126 PERLDBf_SUBLINE| PERLDBf_SINGLE| \
6127 PERLDBf_NAMEEVAL| PERLDBf_NAMEANON | \
6129 /* No _NONAME, _GOTO */
6130 #define PERLDBf_SUB 0x01 /* Debug sub enter/exit */
6131 #define PERLDBf_LINE 0x02 /* Keep line # */
6132 #define PERLDBf_NOOPT 0x04 /* Switch off optimizations */
6133 #define PERLDBf_INTER 0x08 /* Preserve more data for
6134 later inspections */
6135 #define PERLDBf_SUBLINE 0x10 /* Keep subr source lines */
6136 #define PERLDBf_SINGLE 0x20 /* Start with single-step on */
6137 #define PERLDBf_NONAME 0x40 /* For _SUB: no name of the subr */
6138 #define PERLDBf_GOTO 0x80 /* Report goto: call DB::goto */
6139 #define PERLDBf_NAMEEVAL 0x100 /* Informative names for evals */
6140 #define PERLDBf_NAMEANON 0x200 /* Informative names for anon subs */
6141 #define PERLDBf_SAVESRC 0x400 /* Save source lines into @{"_<$filename"} */
6142 #define PERLDBf_SAVESRC_NOSUBS 0x800 /* Including evals that generate no subroutines */
6143 #define PERLDBf_SAVESRC_INVALID 0x1000 /* Save source that did not compile */
6145 #define PERLDB_SUB (PL_perldb & PERLDBf_SUB)
6146 #define PERLDB_LINE (PL_perldb & PERLDBf_LINE)
6147 #define PERLDB_NOOPT (PL_perldb & PERLDBf_NOOPT)
6148 #define PERLDB_INTER (PL_perldb & PERLDBf_INTER)
6149 #define PERLDB_SUBLINE (PL_perldb & PERLDBf_SUBLINE)
6150 #define PERLDB_SINGLE (PL_perldb & PERLDBf_SINGLE)
6151 #define PERLDB_SUB_NN (PL_perldb & PERLDBf_NONAME)
6152 #define PERLDB_GOTO (PL_perldb & PERLDBf_GOTO)
6153 #define PERLDB_NAMEEVAL (PL_perldb & PERLDBf_NAMEEVAL)
6154 #define PERLDB_NAMEANON (PL_perldb & PERLDBf_NAMEANON)
6155 #define PERLDB_SAVESRC (PL_perldb & PERLDBf_SAVESRC)
6156 #define PERLDB_SAVESRC_NOSUBS (PL_perldb & PERLDBf_SAVESRC_NOSUBS)
6157 #define PERLDB_SAVESRC_INVALID (PL_perldb & PERLDBf_SAVESRC_INVALID)
6159 #define PERLDB_LINE_OR_SAVESRC (PL_perldb & (PERLDBf_LINE | PERLDBf_SAVESRC))
6162 # define KEYWORD_PLUGIN_MUTEX_INIT MUTEX_INIT(&PL_keyword_plugin_mutex)
6163 # define KEYWORD_PLUGIN_MUTEX_LOCK MUTEX_LOCK(&PL_keyword_plugin_mutex)
6164 # define KEYWORD_PLUGIN_MUTEX_UNLOCK MUTEX_UNLOCK(&PL_keyword_plugin_mutex)
6165 # define KEYWORD_PLUGIN_MUTEX_TERM MUTEX_DESTROY(&PL_keyword_plugin_mutex)
6166 # define USER_PROP_MUTEX_INIT MUTEX_INIT(&PL_user_prop_mutex)
6167 # define USER_PROP_MUTEX_LOCK MUTEX_LOCK(&PL_user_prop_mutex)
6168 # define USER_PROP_MUTEX_UNLOCK MUTEX_UNLOCK(&PL_user_prop_mutex)
6169 # define USER_PROP_MUTEX_TERM MUTEX_DESTROY(&PL_user_prop_mutex)
6171 # define KEYWORD_PLUGIN_MUTEX_INIT NOOP
6172 # define KEYWORD_PLUGIN_MUTEX_LOCK NOOP
6173 # define KEYWORD_PLUGIN_MUTEX_UNLOCK NOOP
6174 # define KEYWORD_PLUGIN_MUTEX_TERM NOOP
6175 # define USER_PROP_MUTEX_INIT NOOP
6176 # define USER_PROP_MUTEX_LOCK NOOP
6177 # define USER_PROP_MUTEX_UNLOCK NOOP
6178 # define USER_PROP_MUTEX_TERM NOOP
6181 #ifdef USE_LOCALE /* These locale things are all subject to change */
6183 /* Returns TRUE if the plain locale pragma without a parameter is in effect.
6185 # define IN_LOCALE_RUNTIME (PL_curcop \
6186 && CopHINTS_get(PL_curcop) & HINT_LOCALE)
6188 /* Returns TRUE if either form of the locale pragma is in effect */
6189 # define IN_SOME_LOCALE_FORM_RUNTIME \
6190 cBOOL(CopHINTS_get(PL_curcop) & (HINT_LOCALE|HINT_LOCALE_PARTIAL))
6192 # define IN_LOCALE_COMPILETIME cBOOL(PL_hints & HINT_LOCALE)
6193 # define IN_SOME_LOCALE_FORM_COMPILETIME \
6194 cBOOL(PL_hints & (HINT_LOCALE|HINT_LOCALE_PARTIAL))
6197 =head1 Locale-related functions and macros
6199 =for apidoc Amn|bool|IN_LOCALE
6201 Evaluates to TRUE if the plain locale pragma without a parameter (S<C<use
6202 locale>>) is in effect.
6204 =for apidoc Amn|bool|IN_LOCALE_COMPILETIME
6206 Evaluates to TRUE if, when compiling a perl program (including an C<eval>) if
6207 the plain locale pragma without a parameter (S<C<use locale>>) is in effect.
6209 =for apidoc Amn|bool|IN_LOCALE_RUNTIME
6211 Evaluates to TRUE if, when executing a perl program (including an C<eval>) if
6212 the plain locale pragma without a parameter (S<C<use locale>>) is in effect.
6217 # define IN_LOCALE \
6218 (IN_PERL_COMPILETIME ? IN_LOCALE_COMPILETIME : IN_LOCALE_RUNTIME)
6219 # define IN_SOME_LOCALE_FORM \
6220 (IN_PERL_COMPILETIME ? IN_SOME_LOCALE_FORM_COMPILETIME \
6221 : IN_SOME_LOCALE_FORM_RUNTIME)
6223 # define IN_LC_ALL_COMPILETIME IN_LOCALE_COMPILETIME
6224 # define IN_LC_ALL_RUNTIME IN_LOCALE_RUNTIME
6226 # define IN_LC_PARTIAL_COMPILETIME cBOOL(PL_hints & HINT_LOCALE_PARTIAL)
6227 # define IN_LC_PARTIAL_RUNTIME \
6228 (PL_curcop && CopHINTS_get(PL_curcop) & HINT_LOCALE_PARTIAL)
6230 # define IN_LC_COMPILETIME(category) \
6231 ( IN_LC_ALL_COMPILETIME \
6232 || ( IN_LC_PARTIAL_COMPILETIME \
6233 && Perl__is_in_locale_category(aTHX_ TRUE, (category))))
6234 # define IN_LC_RUNTIME(category) \
6235 (IN_LC_ALL_RUNTIME || (IN_LC_PARTIAL_RUNTIME \
6236 && Perl__is_in_locale_category(aTHX_ FALSE, (category))))
6237 # define IN_LC(category) \
6238 (IN_LC_COMPILETIME(category) || IN_LC_RUNTIME(category))
6240 # if defined (PERL_CORE) || defined (PERL_IN_XSUB_RE)
6242 /* This internal macro should be called from places that operate under
6243 * locale rules. If there is a problem with the current locale that
6244 * hasn't been raised yet, it will output a warning this time. Because
6245 * this will so rarely be true, there is no point to optimize for time;
6246 * instead it makes sense to minimize space used and do all the work in
6247 * the rarely called function */
6248 # ifdef USE_LOCALE_CTYPE
6249 # define _CHECK_AND_WARN_PROBLEMATIC_LOCALE \
6251 if (UNLIKELY(PL_warn_locale)) { \
6252 Perl__warn_problematic_locale(); \
6256 # define _CHECK_AND_WARN_PROBLEMATIC_LOCALE
6260 /* These two internal macros are called when a warning should be raised,
6261 * and will do so if enabled. The first takes a single code point
6262 * argument; the 2nd, is a pointer to the first byte of the UTF-8 encoded
6263 * string, and an end position which it won't try to read past */
6264 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_CP_MSG(cp) \
6266 if (! PL_in_utf8_CTYPE_locale && ckWARN(WARN_LOCALE)) { \
6267 Perl_warner(aTHX_ packWARN(WARN_LOCALE), \
6268 "Wide character (U+%" UVXf ") in %s",\
6269 (UV) cp, OP_DESC(PL_op)); \
6273 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(s, send) \
6274 STMT_START { /* Check if to warn before doing the conversion work */\
6275 if (! PL_in_utf8_CTYPE_locale && ckWARN(WARN_LOCALE)) { \
6276 UV cp = utf8_to_uvchr_buf((U8 *) (s), (U8 *) (send), NULL); \
6277 Perl_warner(aTHX_ packWARN(WARN_LOCALE), \
6278 "Wide character (U+%" UVXf ") in %s", \
6280 ? UNICODE_REPLACEMENT \
6286 # endif /* PERL_CORE or PERL_IN_XSUB_RE */
6287 #else /* No locale usage */
6288 # define IN_LOCALE_RUNTIME 0
6289 # define IN_SOME_LOCALE_FORM_RUNTIME 0
6290 # define IN_LOCALE_COMPILETIME 0
6291 # define IN_SOME_LOCALE_FORM_COMPILETIME 0
6292 # define IN_LOCALE 0
6293 # define IN_SOME_LOCALE_FORM 0
6294 # define IN_LC_ALL_COMPILETIME 0
6295 # define IN_LC_ALL_RUNTIME 0
6296 # define IN_LC_PARTIAL_COMPILETIME 0
6297 # define IN_LC_PARTIAL_RUNTIME 0
6298 # define IN_LC_COMPILETIME(category) 0
6299 # define IN_LC_RUNTIME(category) 0
6300 # define IN_LC(category) 0
6301 # define _CHECK_AND_WARN_PROBLEMATIC_LOCALE
6302 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(s, send)
6303 # define _CHECK_AND_OUTPUT_WIDE_LOCALE_CP_MSG(c)
6307 /* Locale/thread synchronization macros. These aren't needed if using
6308 * thread-safe locale operations, except if something is broken */
6309 #if defined(USE_LOCALE) \
6310 && defined(USE_ITHREADS) \
6311 && (! defined(USE_THREAD_SAFE_LOCALE) || defined(TS_W32_BROKEN_LOCALECONV))
6313 /* We have a locale object holding the 'C' locale for Posix 2008 */
6314 # ifndef USE_POSIX_2008_LOCALE
6315 # define _LOCALE_TERM_POSIX_2008 NOOP
6317 # define _LOCALE_TERM_POSIX_2008 \
6319 if (PL_C_locale_obj) { \
6320 /* Make sure we aren't using the locale \
6321 * space we are about to free */ \
6322 uselocale(LC_GLOBAL_LOCALE); \
6323 freelocale(PL_C_locale_obj); \
6324 PL_C_locale_obj = (locale_t) NULL; \
6329 /* This is used as a generic lock for locale operations. For example this is
6330 * used when calling nl_langinfo() so that another thread won't zap the
6331 * contents of its buffer before it gets saved; and it's called when changing
6332 * the locale of LC_MESSAGES. On some systems the latter can cause the
6333 * nl_langinfo buffer to be zapped under a race condition.
6335 * If combined with LC_NUMERIC_LOCK, calls to this and its corresponding unlock
6336 * should be contained entirely within the locked portion of LC_NUMERIC. This
6337 * mutex should be used only in very short sections of code, while
6338 * LC_NUMERIC_LOCK may span more operations. By always following this
6339 * convention, deadlock should be impossible. But if necessary, the two
6340 * mutexes could be combined.
6342 * Actually, the two macros just below with the '_V' suffixes are used in just
6343 * a few places where there is a broken localeconv(), but otherwise things are
6344 * thread safe, and hence don't need locking. Just below LOCALE_LOCK and
6345 * LOCALE_UNLOCK are defined in terms of these for use everywhere else */
6346 # define LOCALE_LOCK_V \
6348 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
6349 "%s: %d: locking locale\n", __FILE__, __LINE__)); \
6350 MUTEX_LOCK(&PL_locale_mutex); \
6352 # define LOCALE_UNLOCK_V \
6354 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
6355 "%s: %d: unlocking locale\n", __FILE__, __LINE__)); \
6356 MUTEX_UNLOCK(&PL_locale_mutex); \
6359 /* On windows, we just need the mutex for LOCALE_LOCK */
6360 # ifdef TS_W32_BROKEN_LOCALECONV
6361 # define LOCALE_LOCK NOOP
6362 # define LOCALE_UNLOCK NOOP
6363 # define LOCALE_INIT MUTEX_INIT(&PL_locale_mutex);
6364 # define LOCALE_TERM MUTEX_DESTROY(&PL_locale_mutex)
6365 # define LC_NUMERIC_LOCK(cond)
6366 # define LC_NUMERIC_UNLOCK
6368 # define LOCALE_LOCK LOCALE_LOCK_V
6369 # define LOCALE_UNLOCK LOCALE_UNLOCK_V
6371 /* We also need to lock LC_NUMERIC for non-windows (hence Posix 2008)
6373 # define LOCALE_INIT STMT_START { \
6374 MUTEX_INIT(&PL_locale_mutex); \
6375 MUTEX_INIT(&PL_lc_numeric_mutex); \
6378 # define LOCALE_TERM STMT_START { \
6379 MUTEX_DESTROY(&PL_locale_mutex); \
6380 MUTEX_DESTROY(&PL_lc_numeric_mutex); \
6381 _LOCALE_TERM_POSIX_2008; \
6384 /* This mutex is used to create critical sections where we want the
6385 * LC_NUMERIC locale to be locked into either the C (standard) locale, or
6386 * the underlying locale, so that other threads interrupting this one don't
6387 * change it to the wrong state before we've had a chance to complete our
6388 * operation. It can stay locked over an entire printf operation, for
6389 * example. And so is made distinct from the LOCALE_LOCK mutex.
6391 * This simulates kind of a general semaphore. The current thread will
6392 * lock the mutex if the per-thread variable is zero, and then increments
6393 * that variable. Each corresponding UNLOCK decrements the variable until
6394 * it is 0, at which point it actually unlocks the mutex. Since the
6395 * variable is per-thread, there is no race with other threads.
6397 * The single argument is a condition to test for, and if true, to panic,
6398 * as this would be an attempt to complement the LC_NUMERIC state, and
6399 * we're not supposed to because it's locked.
6401 * Clang improperly gives warnings for this, if not silenced:
6402 * https://clang.llvm.org/docs/ThreadSafetyAnalysis.html#conditional-locks
6404 # define LC_NUMERIC_LOCK(cond_to_panic_if_already_locked) \
6405 CLANG_DIAG_IGNORE(-Wthread-safety) \
6407 if (PL_lc_numeric_mutex_depth <= 0) { \
6408 MUTEX_LOCK(&PL_lc_numeric_mutex); \
6409 PL_lc_numeric_mutex_depth = 1; \
6410 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
6411 "%s: %d: locking lc_numeric; depth=1\n", \
6412 __FILE__, __LINE__)); \
6415 PL_lc_numeric_mutex_depth++; \
6416 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
6417 "%s: %d: avoided lc_numeric_lock; new depth=%d\n", \
6418 __FILE__, __LINE__, PL_lc_numeric_mutex_depth)); \
6419 if (cond_to_panic_if_already_locked) { \
6420 Perl_croak_nocontext("panic: %s: %d: Trying to change" \
6421 " LC_NUMERIC incompatibly", \
6422 __FILE__, __LINE__); \
6427 # define LC_NUMERIC_UNLOCK \
6429 if (PL_lc_numeric_mutex_depth <= 1) { \
6430 MUTEX_UNLOCK(&PL_lc_numeric_mutex); \
6431 PL_lc_numeric_mutex_depth = 0; \
6432 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
6433 "%s: %d: unlocking lc_numeric; depth=0\n", \
6434 __FILE__, __LINE__)); \
6437 PL_lc_numeric_mutex_depth--; \
6438 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
6439 "%s: %d: avoided lc_numeric_unlock; new depth=%d\n",\
6440 __FILE__, __LINE__, PL_lc_numeric_mutex_depth)); \
6445 # endif /* End of needs locking LC_NUMERIC */
6446 #else /* Below is no locale sync needed */
6447 # define LOCALE_INIT
6448 # define LOCALE_LOCK
6449 # define LOCALE_LOCK_V
6450 # define LOCALE_UNLOCK
6451 # define LOCALE_UNLOCK_V
6452 # define LC_NUMERIC_LOCK(cond)
6453 # define LC_NUMERIC_UNLOCK
6454 # define LOCALE_TERM
6457 #ifdef USE_LOCALE_NUMERIC
6459 /* These macros are for toggling between the underlying locale (UNDERLYING or
6460 * LOCAL) and the C locale (STANDARD). (Actually we don't have to use the C
6461 * locale if the underlying locale is indistinguishable from it in the numeric
6462 * operations used by Perl, namely the decimal point, and even the thousands
6465 =head1 Locale-related functions and macros
6467 =for apidoc Amn|void|DECLARATION_FOR_LC_NUMERIC_MANIPULATION
6469 This macro should be used as a statement. It declares a private variable
6470 (whose name begins with an underscore) that is needed by the other macros in
6471 this section. Failing to include this correctly should lead to a syntax error.
6472 For compatibility with C89 C compilers it should be placed in a block before
6473 any executable statements.
6475 =for apidoc Am|void|STORE_LC_NUMERIC_FORCE_TO_UNDERLYING
6477 This is used by XS code that that is C<LC_NUMERIC> locale-aware to force the
6478 locale for category C<LC_NUMERIC> to be what perl thinks is the current
6479 underlying locale. (The perl interpreter could be wrong about what the
6480 underlying locale actually is if some C or XS code has called the C library
6481 function L<setlocale(3)> behind its back; calling L</sync_locale> before calling
6482 this macro will update perl's records.)
6484 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to
6485 declare at compile time a private variable used by this macro. This macro
6486 should be called as a single statement, not an expression, but with an empty
6487 argument list, like this:
6490 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
6492 STORE_LC_NUMERIC_FORCE_TO_UNDERLYING();
6494 RESTORE_LC_NUMERIC();
6498 The private variable is used to save the current locale state, so
6499 that the requisite matching call to L</RESTORE_LC_NUMERIC> can restore it.
6501 On threaded perls not operating with thread-safe functionality, this macro uses
6502 a mutex to force a critical section. Therefore the matching RESTORE should be
6503 close by, and guaranteed to be called.
6505 =for apidoc Am|void|STORE_LC_NUMERIC_SET_TO_NEEDED
6507 This is used to help wrap XS or C code that is C<LC_NUMERIC> locale-aware.
6508 This locale category is generally kept set to a locale where the decimal radix
6509 character is a dot, and the separator between groups of digits is empty. This
6510 is because most XS code that reads floating point numbers is expecting them to
6513 This macro makes sure the current C<LC_NUMERIC> state is set properly, to be
6514 aware of locale if the call to the XS or C code from the Perl program is
6515 from within the scope of a S<C<use locale>>; or to ignore locale if the call is
6516 instead from outside such scope.
6518 This macro is the start of wrapping the C or XS code; the wrap ending is done
6519 by calling the L</RESTORE_LC_NUMERIC> macro after the operation. Otherwise
6520 the state can be changed that will adversely affect other XS code.
6522 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to
6523 declare at compile time a private variable used by this macro. This macro
6524 should be called as a single statement, not an expression, but with an empty
6525 argument list, like this:
6528 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
6530 STORE_LC_NUMERIC_SET_TO_NEEDED();
6532 RESTORE_LC_NUMERIC();
6536 On threaded perls not operating with thread-safe functionality, this macro uses
6537 a mutex to force a critical section. Therefore the matching RESTORE should be
6538 close by, and guaranteed to be called; see L</WITH_LC_NUMERIC_SET_TO_NEEDED>
6539 for a more contained way to ensure that.
6541 =for apidoc Am|void|STORE_LC_NUMERIC_SET_TO_NEEDED_IN|bool in_lc_numeric
6543 Same as L</STORE_LC_NUMERIC_SET_TO_NEEDED> with in_lc_numeric provided
6544 as the precalculated value of C<IN_LC(LC_NUMERIC)>. It is the caller's
6545 responsibility to ensure that the status of C<PL_compiling> and C<PL_hints>
6546 cannot have changed since the precalculation.
6548 =for apidoc Am|void|RESTORE_LC_NUMERIC
6550 This is used in conjunction with one of the macros
6551 L</STORE_LC_NUMERIC_SET_TO_NEEDED>
6552 and L</STORE_LC_NUMERIC_FORCE_TO_UNDERLYING> to properly restore the
6553 C<LC_NUMERIC> state.
6555 A call to L</DECLARATION_FOR_LC_NUMERIC_MANIPULATION> must have been made to
6556 declare at compile time a private variable used by this macro and the two
6557 C<STORE> ones. This macro should be called as a single statement, not an
6558 expression, but with an empty argument list, like this:
6561 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
6563 RESTORE_LC_NUMERIC();
6567 =for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED|block
6569 This macro invokes the supplied statement or block within the context
6570 of a L</STORE_LC_NUMERIC_SET_TO_NEEDED> .. L</RESTORE_LC_NUMERIC> pair
6573 WITH_LC_NUMERIC_SET_TO_NEEDED(
6574 SNPRINTF_G(fv, ebuf, sizeof(ebuf), precis)
6580 #ifdef USE_LOCALE_NUMERIC
6581 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
6582 STORE_LC_NUMERIC_SET_TO_NEEDED();
6584 SNPRINTF_G(fv, ebuf, sizeof(ebuf), precis);
6585 #ifdef USE_LOCALE_NUMERIC
6586 RESTORE_LC_NUMERIC();
6590 =for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED_IN|bool in_lc_numeric|block
6592 Same as L</WITH_LC_NUMERIC_SET_TO_NEEDED> with in_lc_numeric provided
6593 as the precalculated value of C<IN_LC(LC_NUMERIC)>. It is the caller's
6594 responsibility to ensure that the status of C<PL_compiling> and C<PL_hints>
6595 cannot have changed since the precalculation.
6601 /* If the underlying numeric locale has a non-dot decimal point or has a
6602 * non-empty floating point thousands separator, the current locale is instead
6603 * generally kept in the C locale instead of that underlying locale. The
6604 * current status is known by looking at two words. One is non-zero if the
6605 * current numeric locale is the standard C/POSIX one or is indistinguishable
6606 * from C. The other is non-zero if the current locale is the underlying
6607 * locale. Both can be non-zero if, as often happens, the underlying locale is
6608 * C or indistinguishable from it.
6610 * khw believes the reason for the variables instead of the bits in a single
6611 * word is to avoid having to have masking instructions. */
6613 # define _NOT_IN_NUMERIC_STANDARD (! PL_numeric_standard)
6615 /* We can lock the category to stay in the C locale, making requests to the
6616 * contrary be noops, in the dynamic scope by setting PL_numeric_standard to 2.
6618 # define _NOT_IN_NUMERIC_UNDERLYING \
6619 (! PL_numeric_underlying && PL_numeric_standard < 2)
6621 # define DECLARATION_FOR_LC_NUMERIC_MANIPULATION \
6622 void (*_restore_LC_NUMERIC_function)(pTHX) = NULL
6624 # define STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in) \
6626 bool _in_lc_numeric = (in); \
6628 ( ( _in_lc_numeric && _NOT_IN_NUMERIC_UNDERLYING) \
6629 || (! _in_lc_numeric && _NOT_IN_NUMERIC_STANDARD))); \
6630 if (_in_lc_numeric) { \
6631 if (_NOT_IN_NUMERIC_UNDERLYING) { \
6632 Perl_set_numeric_underlying(aTHX); \
6633 _restore_LC_NUMERIC_function \
6634 = &Perl_set_numeric_standard; \
6638 if (_NOT_IN_NUMERIC_STANDARD) { \
6639 Perl_set_numeric_standard(aTHX); \
6640 _restore_LC_NUMERIC_function \
6641 = &Perl_set_numeric_underlying; \
6646 # define STORE_LC_NUMERIC_SET_TO_NEEDED() \
6647 STORE_LC_NUMERIC_SET_TO_NEEDED_IN(IN_LC(LC_NUMERIC))
6649 # define RESTORE_LC_NUMERIC() \
6651 if (_restore_LC_NUMERIC_function) { \
6652 _restore_LC_NUMERIC_function(aTHX); \
6654 LC_NUMERIC_UNLOCK; \
6657 /* The next two macros set unconditionally. These should be rarely used, and
6658 * only after being sure that this is what is needed */
6659 # define SET_NUMERIC_STANDARD() \
6661 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
6662 "%s: %d: lc_numeric standard=%d\n", \
6663 __FILE__, __LINE__, PL_numeric_standard)); \
6664 Perl_set_numeric_standard(aTHX); \
6665 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
6666 "%s: %d: lc_numeric standard=%d\n", \
6667 __FILE__, __LINE__, PL_numeric_standard)); \
6670 # define SET_NUMERIC_UNDERLYING() \
6672 if (_NOT_IN_NUMERIC_UNDERLYING) { \
6673 Perl_set_numeric_underlying(aTHX); \
6677 /* The rest of these LC_NUMERIC macros toggle to one or the other state, with
6678 * the RESTORE_foo ones called to switch back, but only if need be */
6679 # define STORE_LC_NUMERIC_SET_STANDARD() \
6681 LC_NUMERIC_LOCK(_NOT_IN_NUMERIC_STANDARD); \
6682 if (_NOT_IN_NUMERIC_STANDARD) { \
6683 _restore_LC_NUMERIC_function = &Perl_set_numeric_underlying;\
6684 Perl_set_numeric_standard(aTHX); \
6688 /* Rarely, we want to change to the underlying locale even outside of 'use
6689 * locale'. This is principally in the POSIX:: functions */
6690 # define STORE_LC_NUMERIC_FORCE_TO_UNDERLYING() \
6692 LC_NUMERIC_LOCK(_NOT_IN_NUMERIC_UNDERLYING); \
6693 if (_NOT_IN_NUMERIC_UNDERLYING) { \
6694 Perl_set_numeric_underlying(aTHX); \
6695 _restore_LC_NUMERIC_function = &Perl_set_numeric_standard; \
6699 /* Lock/unlock to the C locale until unlock is called. This needs to be
6700 * recursively callable. [perl #128207] */
6701 # define LOCK_LC_NUMERIC_STANDARD() \
6703 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
6704 "%s: %d: lock lc_numeric_standard: new depth=%d\n", \
6705 __FILE__, __LINE__, PL_numeric_standard + 1)); \
6706 __ASSERT_(PL_numeric_standard) \
6707 PL_numeric_standard++; \
6710 # define UNLOCK_LC_NUMERIC_STANDARD() \
6712 if (PL_numeric_standard > 1) { \
6713 PL_numeric_standard--; \
6718 DEBUG_Lv(PerlIO_printf(Perl_debug_log, \
6719 "%s: %d: lc_numeric_standard decrement lock, new depth=%d\n", \
6720 __FILE__, __LINE__, PL_numeric_standard)); \
6723 # define WITH_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric, block) \
6725 DECLARATION_FOR_LC_NUMERIC_MANIPULATION; \
6726 STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric); \
6728 RESTORE_LC_NUMERIC(); \
6731 # define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \
6732 WITH_LC_NUMERIC_SET_TO_NEEDED_IN(IN_LC(LC_NUMERIC), block)
6734 #else /* !USE_LOCALE_NUMERIC */
6736 # define SET_NUMERIC_STANDARD()
6737 # define SET_NUMERIC_UNDERLYING()
6738 # define IS_NUMERIC_RADIX(a, b) (0)
6739 # define DECLARATION_FOR_LC_NUMERIC_MANIPULATION
6740 # define STORE_LC_NUMERIC_SET_STANDARD()
6741 # define STORE_LC_NUMERIC_FORCE_TO_UNDERLYING()
6742 # define STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric)
6743 # define STORE_LC_NUMERIC_SET_TO_NEEDED()
6744 # define RESTORE_LC_NUMERIC()
6745 # define LOCK_LC_NUMERIC_STANDARD()
6746 # define UNLOCK_LC_NUMERIC_STANDARD()
6747 # define WITH_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric, block) \
6748 STMT_START { block; } STMT_END
6749 # define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \
6750 STMT_START { block; } STMT_END
6752 #endif /* !USE_LOCALE_NUMERIC */
6754 #define Atof my_atof
6758 =head1 Numeric functions
6760 =for apidoc AmTR|NV|Strtod|NN const char * const s|NULLOK char ** e
6762 This is a synonym for L</my_strtod>.
6764 =for apidoc AmTR|NV|Strtol|NN const char * const s|NULLOK char ** e|int base
6766 Platform and configuration independent C<strtol>. This expands to the
6767 appropriate C<strotol>-like function based on the platform and F<Configure>
6768 options>. For example it could expand to C<strtoll> or C<strtoq> instead of
6771 =for apidoc AmTR|NV|Strtoul|NN const char * const s|NULLOK char ** e|int base
6773 Platform and configuration independent C<strtoul>. This expands to the
6774 appropriate C<strotoul>-like function based on the platform and F<Configure>
6775 options>. For example it could expand to C<strtoull> or C<strtouq> instead of
6782 #define Strtod my_strtod
6784 #if defined(HAS_STRTOD) \
6785 || defined(USE_QUADMATH) \
6786 || (defined(HAS_STRTOLD) && defined(HAS_LONG_DOUBLE) \
6787 && defined(USE_LONG_DOUBLE))
6788 # define Perl_strtod Strtod
6791 #if !defined(Strtol) && defined(USE_64_BIT_INT) && defined(IV_IS_QUAD) && \
6792 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64)
6794 # define strtoll __strtoll /* secret handshake */
6796 # if defined(WIN64) && defined(_MSC_VER)
6797 # define strtoll _strtoi64 /* secret handshake */
6799 # if !defined(Strtol) && defined(HAS_STRTOLL)
6800 # define Strtol strtoll
6802 # if !defined(Strtol) && defined(HAS_STRTOQ)
6803 # define Strtol strtoq
6805 /* is there atoq() anywhere? */
6807 #if !defined(Strtol) && defined(HAS_STRTOL)
6808 # define Strtol strtol
6811 /* It would be more fashionable to use Strtol() to define atol()
6812 * (as is done for Atoul(), see below) but for backward compatibility
6813 * we just assume atol(). */
6814 # if defined(USE_64_BIT_INT) && defined(IV_IS_QUAD) && defined(HAS_ATOLL) && \
6815 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64)
6817 # define atoll _atoi64 /* secret handshake */
6825 #if !defined(Strtoul) && defined(USE_64_BIT_INT) && defined(UV_IS_QUAD) && \
6826 (QUADKIND == QUAD_IS_LONG_LONG || QUADKIND == QUAD_IS___INT64)
6828 # define strtoull __strtoull /* secret handshake */
6830 # if defined(WIN64) && defined(_MSC_VER)
6831 # define strtoull _strtoui64 /* secret handshake */
6833 # if !defined(Strtoul) && defined(HAS_STRTOULL)
6834 # define Strtoul strtoull
6836 # if !defined(Strtoul) && defined(HAS_STRTOUQ)
6837 # define Strtoul strtouq
6839 /* is there atouq() anywhere? */
6841 #if !defined(Strtoul) && defined(HAS_STRTOUL)
6842 # define Strtoul strtoul
6844 #if !defined(Strtoul) && defined(HAS_STRTOL) /* Last resort. */
6845 # define Strtoul(s, e, b) strchr((s), '-') ? ULONG_MAX : (unsigned long)strtol((s), (e), (b))
6848 # define Atoul(s) Strtoul(s, NULL, 10)
6851 #ifndef PERL_SCRIPT_MODE
6852 #define PERL_SCRIPT_MODE "r"
6855 /* not used. Kept as a NOOP for backcompat */
6856 #define PERL_STACK_OVERFLOW_CHECK() NOOP
6859 * Some nonpreemptive operating systems find it convenient to
6860 * check for asynchronous conditions after each op execution.
6861 * Keep this check simple, or it may slow down execution
6866 # ifndef PERL_ASYNC_CHECK
6867 # define PERL_ASYNC_CHECK() if (UNLIKELY(PL_sig_pending)) PL_signalhook(aTHX)
6871 #ifndef PERL_ASYNC_CHECK
6872 # define PERL_ASYNC_CHECK() NOOP
6876 * On some operating systems, a memory allocation may succeed,
6877 * but put the process too close to the system's comfort limit.
6878 * In this case, PERL_ALLOC_CHECK frees the pointer and sets
6881 #ifndef PERL_ALLOC_CHECK
6882 #define PERL_ALLOC_CHECK(p) NOOP
6886 # include <sys/ipc.h>
6887 # include <sys/sem.h>
6888 # ifndef HAS_UNION_SEMUN /* Provide the union semun. */
6891 struct semid_ds *buf;
6892 unsigned short *array;
6895 # ifdef USE_SEMCTL_SEMUN
6896 # ifdef IRIX32_SEMUN_BROKEN_BY_GCC
6897 union gccbug_semun {
6899 struct semid_ds *buf;
6900 unsigned short *array;
6903 # define semun gccbug_semun
6905 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun)
6906 # elif defined(USE_SEMCTL_SEMID_DS)
6907 # ifdef EXTRA_F_IN_SEMUN_BUF
6908 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buff)
6910 # define Semctl(id, num, cmd, semun) semctl(id, num, cmd, semun.buf)
6916 * Boilerplate macros for initializing and accessing interpreter-local
6917 * data from C. All statics in extensions should be reworked to use
6918 * this, if you want to make the extension thread-safe. See
6919 * ext/XS/APItest/APItest.xs for an example of the use of these macros,
6920 * and perlxs.pod for more.
6922 * Code that uses these macros is responsible for the following:
6923 * 1. #define MY_CXT_KEY to a unique string, e.g.
6924 * "DynaLoader::_guts" XS_VERSION
6925 * XXX in the current implementation, this string is ignored.
6926 * 2. Declare a typedef named my_cxt_t that is a structure that contains
6927 * all the data that needs to be interpreter-local.
6928 * 3. Use the START_MY_CXT macro after the declaration of my_cxt_t.
6929 * 4. Use the MY_CXT_INIT macro such that it is called exactly once
6930 * (typically put in the BOOT: section).
6931 * 5. Use the members of the my_cxt_t structure everywhere as
6933 * 6. Use the dMY_CXT macro (a declaration) in all the functions that
6937 #if defined(PERL_IMPLICIT_CONTEXT)
6939 /* START_MY_CXT must appear in all extensions that define a my_cxt_t structure,
6940 * right after the definition (i.e. at file scope). The non-threads
6941 * case below uses it to declare the data as static. */
6942 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
6943 # define START_MY_CXT
6944 # define MY_CXT_INDEX Perl_my_cxt_index(aTHX_ MY_CXT_KEY)
6945 # define MY_CXT_INIT_ARG MY_CXT_KEY
6947 # define START_MY_CXT static int my_cxt_index = -1;
6948 # define MY_CXT_INDEX my_cxt_index
6949 # define MY_CXT_INIT_ARG &my_cxt_index
6950 # endif /* #ifdef PERL_GLOBAL_STRUCT_PRIVATE */
6952 /* Creates and zeroes the per-interpreter data.
6953 * (We allocate my_cxtp in a Perl SV so that it will be released when
6954 * the interpreter goes away.) */
6955 # define MY_CXT_INIT \
6956 my_cxt_t *my_cxtp = \
6957 (my_cxt_t*)Perl_my_cxt_init(aTHX_ MY_CXT_INIT_ARG, sizeof(my_cxt_t)); \
6958 PERL_UNUSED_VAR(my_cxtp)
6959 # define MY_CXT_INIT_INTERP(my_perl) \
6960 my_cxt_t *my_cxtp = \
6961 (my_cxt_t*)Perl_my_cxt_init(my_perl, MY_CXT_INIT_ARG, sizeof(my_cxt_t)); \
6962 PERL_UNUSED_VAR(my_cxtp)
6964 /* This declaration should be used within all functions that use the
6965 * interpreter-local data. */
6967 my_cxt_t *my_cxtp = (my_cxt_t *)PL_my_cxt_list[MY_CXT_INDEX]
6968 # define dMY_CXT_INTERP(my_perl) \
6969 my_cxt_t *my_cxtp = (my_cxt_t *)(my_perl)->Imy_cxt_list[MY_CXT_INDEX]
6971 /* Clones the per-interpreter data. */
6972 # define MY_CXT_CLONE \
6973 my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1));\
6974 void * old_my_cxtp = PL_my_cxt_list[MY_CXT_INDEX]; \
6975 PL_my_cxt_list[MY_CXT_INDEX] = my_cxtp; \
6976 Copy(old_my_cxtp, my_cxtp, 1, my_cxt_t);
6980 /* This macro must be used to access members of the my_cxt_t structure.
6981 * e.g. MY_CXT.some_data */
6982 # define MY_CXT (*my_cxtp)
6984 /* Judicious use of these macros can reduce the number of times dMY_CXT
6985 * is used. Use is similar to pTHX, aTHX etc. */
6986 # define pMY_CXT my_cxt_t *my_cxtp
6987 # define pMY_CXT_ pMY_CXT,
6988 # define _pMY_CXT ,pMY_CXT
6989 # define aMY_CXT my_cxtp
6990 # define aMY_CXT_ aMY_CXT,
6991 # define _aMY_CXT ,aMY_CXT
6993 #else /* PERL_IMPLICIT_CONTEXT */
6995 # define START_MY_CXT static my_cxt_t my_cxt;
6996 # define dMY_CXT_SV dNOOP
6997 # define dMY_CXT dNOOP
6998 # define dMY_CXT_INTERP(my_perl) dNOOP
6999 # define MY_CXT_INIT NOOP
7000 # define MY_CXT_CLONE NOOP
7001 # define MY_CXT my_cxt
7003 # define pMY_CXT void
7010 #endif /* !defined(PERL_IMPLICIT_CONTEXT) */
7021 # undef FD_CLOEXEC /* a lie in AmigaOS */
7025 # include <sys/file.h>
7028 #if defined(HAS_FLOCK) && !defined(HAS_FLOCK_PROTO)
7029 int flock(int fd, int op);
7033 /* Assume UNIX defaults */
7034 # define O_RDONLY 0000
7035 # define O_WRONLY 0001
7036 # define O_RDWR 0002
7037 # define O_CREAT 0100
7048 #if O_TEXT != O_BINARY
7049 /* If you have different O_TEXT and O_BINARY and you are a CRLF shop,
7050 * that is, you are somehow DOSish. */
7051 # if defined(__HAIKU__) || defined(__VOS__) || defined(__CYGWIN__)
7052 /* Haiku has O_TEXT != O_BINARY but O_TEXT and O_BINARY have no effect;
7053 * Haiku is always UNIXoid (LF), not DOSish (CRLF). */
7054 /* VOS has O_TEXT != O_BINARY, and they have effect,
7055 * but VOS always uses LF, never CRLF. */
7056 /* If you have O_TEXT different from your O_BINARY but you still are
7057 * not a CRLF shop. */
7058 # undef PERLIO_USING_CRLF
7060 /* If you really are DOSish. */
7061 # define PERLIO_USING_CRLF 1
7066 # include <libutil.h> /* setproctitle() in some FreeBSDs */
7069 #ifndef EXEC_ARGV_CAST
7070 #define EXEC_ARGV_CAST(x) (char **)x
7073 #define IS_NUMBER_IN_UV 0x01 /* number within UV range (maybe not
7074 int). value returned in pointed-
7076 #define IS_NUMBER_GREATER_THAN_UV_MAX 0x02 /* pointed to UV undefined */
7077 #define IS_NUMBER_NOT_INT 0x04 /* saw . or E notation or infnan */
7078 #define IS_NUMBER_NEG 0x08 /* leading minus sign */
7079 #define IS_NUMBER_INFINITY 0x10 /* this is big */
7080 #define IS_NUMBER_NAN 0x20 /* this is not */
7081 #define IS_NUMBER_TRAILING 0x40 /* number has trailing trash */
7084 =head1 Numeric functions
7086 =for apidoc AmdR|bool|GROK_NUMERIC_RADIX|NN const char **sp|NN const char *send
7088 A synonym for L</grok_numeric_radix>
7092 #define GROK_NUMERIC_RADIX(sp, send) grok_numeric_radix(sp, send)
7095 #define PERL_SCAN_ALLOW_UNDERSCORES 0x01 /* grok_??? accept _ in numbers */
7096 #define PERL_SCAN_DISALLOW_PREFIX 0x02 /* grok_??? reject 0x in hex etc */
7097 #define PERL_SCAN_SILENT_ILLDIGIT 0x04 /* grok_??? not warn about illegal digits */
7098 #define PERL_SCAN_SILENT_NON_PORTABLE 0x08 /* grok_??? not warn about very large
7099 numbers which are <= UV_MAX */
7100 #define PERL_SCAN_TRAILING 0x10 /* grok_number_flags() allow trailing
7101 and set IS_NUMBER_TRAILING */
7104 #define PERL_SCAN_GREATER_THAN_UV_MAX 0x02 /* should this merge with above? */
7106 /* to let user control profiling */
7107 #ifdef PERL_GPROF_CONTROL
7108 extern void moncontrol(int);
7109 #define PERL_GPROF_MONCONTROL(x) moncontrol(x)
7111 #define PERL_GPROF_MONCONTROL(x)
7114 /* ISO 6429 NEL - C1 control NExt Line */
7115 /* See https://www.unicode.org/unicode/reports/tr13/ */
7116 #define NEXT_LINE_CHAR NEXT_LINE_NATIVE
7118 #ifndef PIPESOCK_MODE
7119 # define PIPESOCK_MODE
7122 #ifndef SOCKET_OPEN_MODE
7123 # define SOCKET_OPEN_MODE PIPESOCK_MODE
7126 #ifndef PIPE_OPEN_MODE
7127 # define PIPE_OPEN_MODE PIPESOCK_MODE
7130 #define PERL_MAGIC_UTF8_CACHESIZE 2
7132 #define PERL_UNICODE_STDIN_FLAG 0x0001
7133 #define PERL_UNICODE_STDOUT_FLAG 0x0002
7134 #define PERL_UNICODE_STDERR_FLAG 0x0004
7135 #define PERL_UNICODE_IN_FLAG 0x0008
7136 #define PERL_UNICODE_OUT_FLAG 0x0010
7137 #define PERL_UNICODE_ARGV_FLAG 0x0020
7138 #define PERL_UNICODE_LOCALE_FLAG 0x0040
7139 #define PERL_UNICODE_WIDESYSCALLS_FLAG 0x0080 /* for Sarathy */
7140 #define PERL_UNICODE_UTF8CACHEASSERT_FLAG 0x0100
7142 #define PERL_UNICODE_STD_FLAG \
7143 (PERL_UNICODE_STDIN_FLAG | \
7144 PERL_UNICODE_STDOUT_FLAG | \
7145 PERL_UNICODE_STDERR_FLAG)
7147 #define PERL_UNICODE_INOUT_FLAG \
7148 (PERL_UNICODE_IN_FLAG | \
7149 PERL_UNICODE_OUT_FLAG)
7151 #define PERL_UNICODE_DEFAULT_FLAGS \
7152 (PERL_UNICODE_STD_FLAG | \
7153 PERL_UNICODE_INOUT_FLAG | \
7154 PERL_UNICODE_LOCALE_FLAG)
7156 #define PERL_UNICODE_ALL_FLAGS 0x01ff
7158 #define PERL_UNICODE_STDIN 'I'
7159 #define PERL_UNICODE_STDOUT 'O'
7160 #define PERL_UNICODE_STDERR 'E'
7161 #define PERL_UNICODE_STD 'S'
7162 #define PERL_UNICODE_IN 'i'
7163 #define PERL_UNICODE_OUT 'o'
7164 #define PERL_UNICODE_INOUT 'D'
7165 #define PERL_UNICODE_ARGV 'A'
7166 #define PERL_UNICODE_LOCALE 'L'
7167 #define PERL_UNICODE_WIDESYSCALLS 'W'
7168 #define PERL_UNICODE_UTF8CACHEASSERT 'a'
7170 #define PERL_SIGNALS_UNSAFE_FLAG 0x0001
7173 =head1 Numeric functions
7175 =for apidoc Am|int|PERL_ABS|int
7177 Typeless C<abs> or C<fabs>, I<etc>. (The usage below indicates it is for
7178 integers, but it works for any type.) Use instead of these, since the C
7179 library ones force their argument to be what it is expecting, potentially
7180 leading to disaster. But also beware that this evaluates its argument twice,
7186 #define PERL_ABS(x) ((x) < 0 ? -(x) : (x))
7188 #if defined(__DECC) && defined(__osf__)
7189 #pragma message disable (mainparm) /* Perl uses the envp in main(). */
7192 #define do_open(g, n, l, a, rm, rp, sf) \
7193 do_openn(g, n, l, a, rm, rp, sf, (SV **) NULL, 0)
7194 #ifdef PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
7195 # define do_exec(cmd) do_exec3(cmd,0,0)
7198 # define do_aexec Perl_do_aexec
7200 # define do_aexec(really, mark,sp) do_aexec5(really, mark, sp, 0, 0)
7205 =head1 Miscellaneous Functions
7207 =for apidoc Am|bool|IS_SAFE_SYSCALL|NN const char *pv|STRLEN len|NN const char *what|NN const char *op_name
7209 Same as L</is_safe_syscall>.
7213 Allows one ending \0
7215 #define IS_SAFE_SYSCALL(p, len, what, op_name) (Perl_is_safe_syscall(aTHX_ (p), (len), (what), (op_name)))
7217 #define IS_SAFE_PATHNAME(p, len, op_name) IS_SAFE_SYSCALL((p), (len), "pathname", (op_name))
7219 #if defined(OEMVS) || defined(__amigaos4__)
7220 #define NO_ENV_ARRAY_IN_MAIN
7223 /* These are used by Perl_pv_escape() and Perl_pv_pretty()
7224 * are here so that they are available throughout the core
7225 * NOTE that even though some are for _escape and some for _pretty
7226 * there must not be any clashes as the flags from _pretty are
7227 * passed straight through to _escape.
7230 #define PERL_PV_ESCAPE_QUOTE 0x000001
7231 #define PERL_PV_PRETTY_QUOTE PERL_PV_ESCAPE_QUOTE
7233 #define PERL_PV_PRETTY_ELLIPSES 0x000002
7234 #define PERL_PV_PRETTY_LTGT 0x000004
7235 #define PERL_PV_PRETTY_EXACTSIZE 0x000008
7237 #define PERL_PV_ESCAPE_UNI 0x000100
7238 #define PERL_PV_ESCAPE_UNI_DETECT 0x000200
7239 #define PERL_PV_ESCAPE_NONASCII 0x000400
7240 #define PERL_PV_ESCAPE_FIRSTCHAR 0x000800
7242 #define PERL_PV_ESCAPE_ALL 0x001000
7243 #define PERL_PV_ESCAPE_NOBACKSLASH 0x002000
7244 #define PERL_PV_ESCAPE_NOCLEAR 0x004000
7245 #define PERL_PV_PRETTY_NOCLEAR PERL_PV_ESCAPE_NOCLEAR
7246 #define PERL_PV_ESCAPE_RE 0x008000
7248 #define PERL_PV_ESCAPE_DWIM 0x010000
7251 /* used by pv_display in dump.c*/
7252 #define PERL_PV_PRETTY_DUMP PERL_PV_PRETTY_ELLIPSES|PERL_PV_PRETTY_QUOTE
7253 #define PERL_PV_PRETTY_REGPROP PERL_PV_PRETTY_ELLIPSES|PERL_PV_PRETTY_LTGT|PERL_PV_ESCAPE_RE|PERL_PV_ESCAPE_NONASCII
7255 #if DOUBLEKIND == DOUBLE_IS_VAX_F_FLOAT || \
7256 DOUBLEKIND == DOUBLE_IS_VAX_D_FLOAT || \
7257 DOUBLEKIND == DOUBLE_IS_VAX_G_FLOAT
7258 # define DOUBLE_IS_VAX_FLOAT
7260 # define DOUBLE_IS_IEEE_FORMAT
7263 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN || \
7264 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN || \
7265 DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
7266 # define DOUBLE_LITTLE_ENDIAN
7269 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN || \
7270 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN || \
7271 DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
7272 # define DOUBLE_BIG_ENDIAN
7275 #if DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE || \
7276 DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE
7277 # define DOUBLE_MIX_ENDIAN
7280 /* The VAX fp formats are neither consistently little-endian nor
7281 * big-endian, and neither are they really IEEE-mixed endian like
7282 * the mixed-endian ARM IEEE formats (with swapped bytes).
7283 * Ultimately, the VAX format came from the PDP-11.
7285 * The ordering of the parts in VAX floats is quite vexing.
7286 * In the below the fraction_n are the mantissa bits.
7288 * The fraction_1 is the most significant (numbering as by DEC/Digital),
7289 * while the rightmost bit in each fraction is the least significant:
7290 * in other words, big-endian bit order within the fractions.
7292 * The fraction segments themselves would be big-endianly, except that
7293 * within 32 bit segments the less significant half comes first, the more
7294 * significant after, except that in the format H (used for long doubles)
7295 * the first fraction segment is alone, because the exponent is wider.
7296 * This means for example that both the most and the least significant
7297 * bits can be in the middle of the floats, not at either end.
7300 * http://nssdc.gsfc.nasa.gov/nssdc/formats/VAXFloatingPoint.htm
7301 * http://www.quadibloc.com/comp/cp0201.htm
7302 * http://h71000.www7.hp.com/doc/82final/6443/6443pro_028.html
7303 * (somebody at HP should be fired for the URLs)
7305 * F fraction_2:16 sign:1 exp:8 fraction_1:7
7306 * (exponent bias 128, hidden first one-bit)
7308 * D fraction_2:16 sign:1 exp:8 fraction_1:7
7309 * fraction_4:16 fraction_3:16
7310 * (exponent bias 128, hidden first one-bit)
7312 * G fraction_2:16 sign:1 exp:11 fraction_1:4
7313 * fraction_4:16 fraction_3:16
7314 * (exponent bias 1024, hidden first one-bit)
7316 * H fraction_1:16 sign:1 exp:15
7317 * fraction_3:16 fraction_2:16
7318 * fraction_5:16 fraction_4:16
7319 * fraction_7:16 fraction_6:16
7320 * (exponent bias 16384, hidden first one-bit)
7321 * (available only on VAX, and only on Fortran?)
7323 * The formats S, T and X are available on the Alpha (and Itanium,
7324 * also known as I64/IA64) and are equivalent with the IEEE-754 formats
7325 * binary32, binary64, and binary128 (commonly: float, double, long double).
7327 * S sign:1 exp:8 mantissa:23
7328 * (exponent bias 127, hidden first one-bit)
7330 * T sign:1 exp:11 mantissa:52
7331 * (exponent bias 1022, hidden first one-bit)
7333 * X sign:1 exp:15 mantissa:112
7334 * (exponent bias 16382, hidden first one-bit)
7338 #ifdef DOUBLE_IS_VAX_FLOAT
7339 # define DOUBLE_VAX_ENDIAN
7342 #ifdef DOUBLE_IS_IEEE_FORMAT
7343 /* All the basic IEEE formats have the implicit bit,
7344 * except for the x86 80-bit extended formats, which will undef this.
7345 * Also note that the IEEE 754 subnormals (formerly known as denormals)
7346 * do not have the implicit bit of one. */
7347 # define NV_IMPLICIT_BIT
7350 #if defined(LONG_DOUBLEKIND) && LONG_DOUBLEKIND != LONG_DOUBLE_IS_DOUBLE
7352 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN || \
7353 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \
7354 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE
7355 # define LONGDOUBLE_LITTLE_ENDIAN
7358 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN || \
7359 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN || \
7360 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE
7361 # define LONGDOUBLE_BIG_ENDIAN
7364 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \
7365 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
7366 # define LONGDOUBLE_MIX_ENDIAN
7369 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \
7370 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN
7371 # define LONGDOUBLE_X86_80_BIT
7372 # ifdef USE_LONG_DOUBLE
7373 # undef NV_IMPLICIT_BIT
7374 # define NV_X86_80_BIT
7378 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE || \
7379 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE || \
7380 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \
7381 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
7382 # define LONGDOUBLE_DOUBLEDOUBLE
7385 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_VAX_H_FLOAT
7386 # define LONGDOUBLE_VAX_ENDIAN
7389 #endif /* LONG_DOUBLEKIND */
7391 #ifdef USE_QUADMATH /* assume quadmath endianness == native double endianness */
7392 # if defined(DOUBLE_LITTLE_ENDIAN)
7393 # define NV_LITTLE_ENDIAN
7394 # elif defined(DOUBLE_BIG_ENDIAN)
7395 # define NV_BIG_ENDIAN
7396 # elif defined(DOUBLE_MIX_ENDIAN) /* stretch */
7397 # define NV_MIX_ENDIAN
7399 #elif NVSIZE == DOUBLESIZE
7400 # ifdef DOUBLE_LITTLE_ENDIAN
7401 # define NV_LITTLE_ENDIAN
7403 # ifdef DOUBLE_BIG_ENDIAN
7404 # define NV_BIG_ENDIAN
7406 # ifdef DOUBLE_MIX_ENDIAN
7407 # define NV_MIX_ENDIAN
7409 # ifdef DOUBLE_VAX_ENDIAN
7410 # define NV_VAX_ENDIAN
7412 #elif NVSIZE == LONG_DOUBLESIZE
7413 # ifdef LONGDOUBLE_LITTLE_ENDIAN
7414 # define NV_LITTLE_ENDIAN
7416 # ifdef LONGDOUBLE_BIG_ENDIAN
7417 # define NV_BIG_ENDIAN
7419 # ifdef LONGDOUBLE_MIX_ENDIAN
7420 # define NV_MIX_ENDIAN
7422 # ifdef LONGDOUBLE_VAX_ENDIAN
7423 # define NV_VAX_ENDIAN
7427 /* We have somehow managed not to define the denormal/subnormal
7430 * This may happen if the compiler doesn't expose the C99 math like
7431 * the fpclassify() without some special switches. Perl tries to
7432 * stay C89, so for example -std=c99 is not an option.
7434 * The Perl_isinf() and Perl_isnan() should have been defined even if
7435 * the C99 isinf() and isnan() are unavailable, and the NV_MIN becomes
7436 * from the C89 DBL_MIN or moral equivalent. */
7437 #if !defined(Perl_fp_class_denorm) && defined(Perl_isinf) && defined(Perl_isnan) && defined(NV_MIN)
7438 # define Perl_fp_class_denorm(x) ((x) != 0.0 && !Perl_isinf(x) && !Perl_isnan(x) && PERL_ABS(x) < NV_MIN)
7441 /* This is not a great fallback: subnormals tests will fail,
7442 * but at least Perl will link and 99.999% of tests will work. */
7443 #if !defined(Perl_fp_class_denorm)
7444 # define Perl_fp_class_denorm(x) FALSE
7447 #ifdef DOUBLE_IS_IEEE_FORMAT
7448 # define DOUBLE_HAS_INF
7449 # define DOUBLE_HAS_NAN
7452 #ifdef DOUBLE_HAS_NAN
7458 /* PL_inf and PL_nan initialization.
7460 * For inf and nan initialization the ultimate fallback is dividing
7461 * one or zero by zero: however, some compilers will warn or even fail
7462 * on divide-by-zero, but hopefully something earlier will work.
7464 * If you are thinking of using HUGE_VAL for infinity, or using
7465 * <math.h> functions to generate NV_INF (e.g. exp(1e9), log(-1.0)),
7466 * stop. Neither will work portably: HUGE_VAL can be just DBL_MAX,
7467 * and the math functions might be just generating DBL_MAX, or even zero.
7469 * Also, do NOT try doing NV_NAN based on NV_INF and trying (NV_INF-NV_INF).
7470 * Though logically correct, some compilers (like Visual C 2003)
7471 * falsely misoptimize that to zero (x-x is always zero, right?)
7473 * Finally, note that not all floating point formats define Inf (or NaN).
7474 * For the infinity a large number may be used instead. Operations that
7475 * under the IEEE floating point would return Inf or NaN may return
7476 * either large numbers (positive or negative), or they may cause
7477 * a floating point exception or some other fault.
7480 /* The quadmath literals are anon structs which -Wc++-compat doesn't like. */
7481 GCC_DIAG_IGNORE_DECL(-Wpragmas);
7482 GCC_DIAG_IGNORE_DECL(-Wc++-compat);
7484 # ifdef USE_QUADMATH
7485 /* Cannot use HUGE_VALQ for PL_inf because not a compile-time
7487 INFNAN_NV_U8_DECL PL_inf = { 1.0Q/0.0Q };
7488 # elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLINFBYTES)
7489 INFNAN_U8_NV_DECL PL_inf = { { LONGDBLINFBYTES } };
7490 # elif NVSIZE == DOUBLESIZE && defined(DOUBLEINFBYTES)
7491 INFNAN_U8_NV_DECL PL_inf = { { DOUBLEINFBYTES } };
7493 # if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE)
7494 # if defined(LDBL_INFINITY)
7495 INFNAN_NV_U8_DECL PL_inf = { LDBL_INFINITY };
7496 # elif defined(LDBL_INF)
7497 INFNAN_NV_U8_DECL PL_inf = { LDBL_INF };
7498 # elif defined(INFINITY)
7499 INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY };
7501 INFNAN_NV_U8_DECL PL_inf = { (NV)INF };
7503 INFNAN_NV_U8_DECL PL_inf = { 1.0L/0.0L }; /* keep last */
7506 # if defined(DBL_INFINITY)
7507 INFNAN_NV_U8_DECL PL_inf = { DBL_INFINITY };
7508 # elif defined(DBL_INF)
7509 INFNAN_NV_U8_DECL PL_inf = { DBL_INF };
7510 # elif defined(INFINITY) /* C99 */
7511 INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY };
7513 INFNAN_NV_U8_DECL PL_inf = { (NV)INF };
7515 INFNAN_NV_U8_DECL PL_inf = { 1.0/0.0 }; /* keep last */
7520 # ifdef USE_QUADMATH
7521 /* Cannot use nanq("0") for PL_nan because not a compile-time
7523 INFNAN_NV_U8_DECL PL_nan = { 0.0Q/0.0Q };
7524 # elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLNANBYTES)
7525 INFNAN_U8_NV_DECL PL_nan = { { LONGDBLNANBYTES } };
7526 # elif NVSIZE == DOUBLESIZE && defined(DOUBLENANBYTES)
7527 INFNAN_U8_NV_DECL PL_nan = { { DOUBLENANBYTES } };
7529 # if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE)
7530 # if defined(LDBL_NAN)
7531 INFNAN_NV_U8_DECL PL_nan = { LDBL_NAN };
7532 # elif defined(LDBL_QNAN)
7533 INFNAN_NV_U8_DECL PL_nan = { LDBL_QNAN };
7535 INFNAN_NV_U8_DECL PL_nan = { (NV)NAN };
7537 INFNAN_NV_U8_DECL PL_nan = { 0.0L/0.0L }; /* keep last */
7540 # if defined(DBL_NAN)
7541 INFNAN_NV_U8_DECL PL_nan = { DBL_NAN };
7542 # elif defined(DBL_QNAN)
7543 INFNAN_NV_U8_DECL PL_nan = { DBL_QNAN };
7544 # elif defined(NAN) /* C99 */
7545 INFNAN_NV_U8_DECL PL_nan = { (NV)NAN };
7547 INFNAN_NV_U8_DECL PL_nan = { 0.0/0.0 }; /* keep last */
7552 GCC_DIAG_RESTORE_DECL;
7553 GCC_DIAG_RESTORE_DECL;
7557 INFNAN_NV_U8_DECL PL_inf;
7558 INFNAN_NV_U8_DECL PL_nan;
7564 /* If you have not defined NV_INF/NV_NAN (like for example win32/win32.h),
7565 * we will define NV_INF/NV_NAN as the nv part of the global const
7566 * PL_inf/PL_nan. Note, however, that the preexisting NV_INF/NV_NAN
7567 * might not be a compile-time constant, in which case it cannot be
7568 * used to initialize PL_inf/PL_nan above. */
7570 # define NV_INF PL_inf.nv
7573 # define NV_NAN PL_nan.nv
7576 /* NaNs (not-a-numbers) can carry payload bits, in addition to
7577 * "nan-ness". Part of the payload is the quiet/signaling bit.
7578 * To back up a bit (harhar):
7580 * For IEEE 754 64-bit formats [1]:
7582 * s 000 (mantissa all-zero) zero
7583 * s 000 (mantissa non-zero) subnormals (denormals)
7584 * s 001 ... 7fe normals
7587 * For IEEE 754 128-bit formats:
7589 * s 0000 (mantissa all-zero) zero
7590 * s 0000 (mantissa non-zero) subnormals (denormals)
7591 * s 0001 ... 7ffe normals
7594 * [1] this looks like big-endian, but applies equally to little-endian.
7596 * s = Sign bit. Yes, zeros and nans can have negative sign,
7597 * the interpretation is application-specific.
7599 * q = Quietness bit, the interpretation is platform-specific.
7600 * Most platforms have the most significant bit being one
7601 * meaning quiet, but some (older mips, hppa) have the msb
7602 * being one meaning signaling. Note that the above means
7603 * that on most platforms there cannot be signaling nan with
7604 * zero payload because that is identical with infinity;
7605 * while conversely on older mips/hppa there cannot be a quiet nan
7606 * because that is identical with infinity.
7608 * Moreover, whether there is any behavioral difference
7609 * between quiet and signaling NaNs, depends on the platform.
7611 * x86 80-bit extended precision is different, the mantissa bits:
7613 * 63 62 61 30387+ pre-387 visual c
7614 * -------- ---- -------- --------
7615 * 0 0 0 invalid infinity
7616 * 0 0 1 invalid snan
7617 * 0 1 0 invalid snan
7618 * 0 1 1 invalid snan
7619 * 1 0 0 infinity snan 1.#INF
7620 * 1 0 1 snan 1.#SNAN
7621 * 1 1 0 qnan -1.#IND (x86 chooses this to negative)
7622 * 1 1 1 qnan 1.#QNAN
7624 * This means that in this format there are 61 bits available
7625 * for the nan payload.
7627 * Note that the 32-bit x86 ABI cannot do signaling nans: the x87
7628 * simply cannot preserve the bit. You can either use the 80-bit
7629 * extended precision (long double, -Duselongdouble), or use x86-64.
7631 * In all platforms, the payload bytes (and bits, some of them are
7632 * often in a partial byte) themselves can be either all zero (x86),
7633 * all one (sparc or mips), or a mixture: in IEEE 754 128-bit double
7634 * or in a double-double, the first half of the payload can follow the
7635 * native double, while in the second half the payload can be all
7636 * zeros. (Therefore the mask for payload bits is not necessarily
7637 * identical to bit complement of the NaN.) Another way of putting
7638 * this: the payload for the default NaN might not be zero.
7640 * For the x86 80-bit long doubles, the trailing bytes (the 80 bits
7641 * being 'packaged' in either 12 or 16 bytes) can be whatever random
7644 * Furthermore, the semantics of the sign bit on NaNs are platform-specific.
7645 * On normal floats, the sign bit being on means negative. But this may,
7646 * or may not, be reverted on NaNs: in other words, the default NaN might
7647 * have the sign bit on, and therefore look like negative if you look
7648 * at it at the bit level.
7650 * NaN payloads are not propagated even on copies, or in arithmetics.
7651 * They *might* be, according to some rules, on your particular
7652 * cpu/os/compiler/libraries, but no guarantees.
7654 * To summarize, on most platforms, and for 64-bit doubles
7655 * (using big-endian ordering here):
7657 * [7FF8000000000000..7FFFFFFFFFFFFFFF] quiet
7658 * [FFF8000000000000..FFFFFFFFFFFFFFFF] quiet
7659 * [7FF0000000000001..7FF7FFFFFFFFFFFF] signaling
7660 * [FFF0000000000001..FFF7FFFFFFFFFFFF] signaling
7662 * The C99 nan() is supposed to generate *quiet* NaNs.
7664 * Note the asymmetry:
7665 * The 7FF0000000000000 is positive infinity,
7666 * the FFF0000000000000 is negative infinity.
7669 /* NVMANTBITS is the number of _real_ mantissa bits in an NV.
7670 * For the standard IEEE 754 fp this number is usually one less that
7671 * *DBL_MANT_DIG because of the implicit (aka hidden) bit, which isn't
7672 * real. For the 80-bit extended precision formats (x86*), the number
7673 * of mantissa bits... depends. For normal floats, it's 64. But for
7674 * the inf/nan, it's different (zero for inf, 61 for nan).
7675 * NVMANTBITS works for normal floats. */
7677 /* We do not want to include the quiet/signaling bit. */
7678 #define NV_NAN_BITS (NVMANTBITS - 1)
7680 #if defined(USE_LONG_DOUBLE) && NVSIZE > DOUBLESIZE
7681 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
7682 # define NV_NAN_QS_BYTE_OFFSET 13
7683 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
7684 # define NV_NAN_QS_BYTE_OFFSET 2
7685 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN
7686 # define NV_NAN_QS_BYTE_OFFSET 7
7687 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN
7688 # define NV_NAN_QS_BYTE_OFFSET 2
7689 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE
7690 # define NV_NAN_QS_BYTE_OFFSET 13
7691 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE
7692 # define NV_NAN_QS_BYTE_OFFSET 1
7693 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE
7694 # define NV_NAN_QS_BYTE_OFFSET 9
7695 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
7696 # define NV_NAN_QS_BYTE_OFFSET 6
7698 # error "Unexpected long double format"
7701 # ifdef USE_QUADMATH
7702 # ifdef NV_LITTLE_ENDIAN
7703 # define NV_NAN_QS_BYTE_OFFSET 13
7704 # elif defined(NV_BIG_ENDIAN)
7705 # define NV_NAN_QS_BYTE_OFFSET 2
7707 # error "Unexpected quadmath format"
7709 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN
7710 # define NV_NAN_QS_BYTE_OFFSET 2
7711 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN
7712 # define NV_NAN_QS_BYTE_OFFSET 1
7713 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN
7714 # define NV_NAN_QS_BYTE_OFFSET 6
7715 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN
7716 # define NV_NAN_QS_BYTE_OFFSET 1
7717 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
7718 # define NV_NAN_QS_BYTE_OFFSET 13
7719 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
7720 # define NV_NAN_QS_BYTE_OFFSET 2
7721 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE
7722 # define NV_NAN_QS_BYTE_OFFSET 2 /* bytes 4 5 6 7 0 1 2 3 (MSB 7) */
7723 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE
7724 # define NV_NAN_QS_BYTE_OFFSET 5 /* bytes 3 2 1 0 7 6 5 4 (MSB 7) */
7726 /* For example the VAX formats should never
7727 * get here because they do not have NaN. */
7728 # error "Unexpected double format"
7731 /* NV_NAN_QS_BYTE is the byte to test for the quiet/signaling */
7732 #define NV_NAN_QS_BYTE(nvp) (((U8*)(nvp))[NV_NAN_QS_BYTE_OFFSET])
7733 /* NV_NAN_QS_BIT is the bit to test in the NV_NAN_QS_BYTE_OFFSET
7734 * for the quiet/signaling */
7735 #if defined(USE_LONG_DOUBLE) && \
7736 (LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN || \
7737 LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN)
7738 # define NV_NAN_QS_BIT_SHIFT 6 /* 0x40 */
7739 #elif defined(USE_LONG_DOUBLE) && \
7740 (LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE || \
7741 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE || \
7742 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE || \
7743 LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE)
7744 # define NV_NAN_QS_BIT_SHIFT 3 /* 0x08, but not via NV_NAN_BITS */
7746 # define NV_NAN_QS_BIT_SHIFT ((NV_NAN_BITS) % 8) /* usually 3, or 0x08 */
7748 #define NV_NAN_QS_BIT (1 << (NV_NAN_QS_BIT_SHIFT))
7749 /* NV_NAN_QS_BIT_OFFSET is the bit offset from the beginning of a NV
7750 * (bytes ordered big-endianly) for the quiet/signaling bit
7751 * for the quiet/signaling */
7752 #define NV_NAN_QS_BIT_OFFSET \
7753 (8 * (NV_NAN_QS_BYTE_OFFSET) + (NV_NAN_QS_BIT_SHIFT))
7754 /* NV_NAN_QS_QUIET (always defined) is true if the NV_NAN_QS_QS_BIT being
7755 * on indicates quiet NaN. NV_NAN_QS_SIGNALING (also always defined)
7756 * is true if the NV_NAN_QS_BIT being on indicates signaling NaN. */
7757 #define NV_NAN_QS_QUIET \
7758 ((NV_NAN_QS_BYTE(PL_nan.u8) & NV_NAN_QS_BIT) == NV_NAN_QS_BIT)
7759 #define NV_NAN_QS_SIGNALING (!(NV_NAN_QS_QUIET))
7760 #define NV_NAN_QS_TEST(nvp) (NV_NAN_QS_BYTE(nvp) & NV_NAN_QS_BIT)
7761 /* NV_NAN_IS_QUIET() returns true if the NV behind nvp is a NaN,
7762 * whether it is a quiet NaN, NV_NAN_IS_SIGNALING() if a signaling NaN.
7763 * Note however that these do not check whether the nvp is a NaN. */
7764 #define NV_NAN_IS_QUIET(nvp) \
7765 (NV_NAN_QS_TEST(nvp) == (NV_NAN_QS_QUIET ? NV_NAN_QS_BIT : 0))
7766 #define NV_NAN_IS_SIGNALING(nvp) \
7767 (NV_NAN_QS_TEST(nvp) == (NV_NAN_QS_QUIET ? 0 : NV_NAN_QS_BIT))
7768 #define NV_NAN_SET_QUIET(nvp) \
7769 (NV_NAN_QS_QUIET ? \
7770 (NV_NAN_QS_BYTE(nvp) |= NV_NAN_QS_BIT) : \
7771 (NV_NAN_QS_BYTE(nvp) &= ~NV_NAN_QS_BIT))
7772 #define NV_NAN_SET_SIGNALING(nvp) \
7773 (NV_NAN_QS_QUIET ? \
7774 (NV_NAN_QS_BYTE(nvp) &= ~NV_NAN_QS_BIT) : \
7775 (NV_NAN_QS_BYTE(nvp) |= NV_NAN_QS_BIT))
7776 #define NV_NAN_QS_XOR(nvp) (NV_NAN_QS_BYTE(nvp) ^= NV_NAN_QS_BIT)
7778 /* NV_NAN_PAYLOAD_MASK: masking the nan payload bits.
7780 * NV_NAN_PAYLOAD_PERM: permuting the nan payload bytes.
7781 * 0xFF means "don't go here".*/
7783 /* Shorthands to avoid typoses. */
7784 #define NV_NAN_PAYLOAD_MASK_SKIP_EIGHT \
7785 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0
7786 #define NV_NAN_PAYLOAD_PERM_SKIP_EIGHT \
7787 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
7788 #define NV_NAN_PAYLOAD_PERM_0_TO_7 \
7789 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7
7790 #define NV_NAN_PAYLOAD_PERM_7_TO_0 \
7791 0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0
7792 #define NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE \
7793 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
7794 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x00, 0x00
7795 #define NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE \
7796 NV_NAN_PAYLOAD_PERM_0_TO_7, \
7797 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xFF, 0xFF
7798 #define NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE \
7799 0x00, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, \
7800 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
7801 #define NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE \
7802 0xFF, 0xFF, 0xd, 0xc, 0xb, 0xa, 0x9, 0x8, \
7803 NV_NAN_PAYLOAD_PERM_7_TO_0
7804 #define NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE \
7805 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x00
7806 #define NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE \
7807 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0xFF
7808 #define NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE \
7809 0x00, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
7810 #define NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE \
7811 0xFF, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0
7813 #if defined(USE_LONG_DOUBLE) && NVSIZE > DOUBLESIZE
7814 # if LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
7815 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE
7816 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE
7817 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
7818 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE
7819 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE
7820 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_LITTLE_ENDIAN
7821 # if LONG_DOUBLESIZE == 10
7822 # define NV_NAN_PAYLOAD_MASK \
7823 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \
7825 # define NV_NAN_PAYLOAD_PERM \
7826 NV_NAN_PAYLOAD_PERM_0_TO_7, 0xFF, 0xFF
7827 # elif LONG_DOUBLESIZE == 12
7828 # define NV_NAN_PAYLOAD_MASK \
7829 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \
7830 0x00, 0x00, 0x00, 0x00
7831 # define NV_NAN_PAYLOAD_PERM \
7832 NV_NAN_PAYLOAD_PERM_0_TO_7, 0xFF, 0xFF, 0xFF, 0xFF
7833 # elif LONG_DOUBLESIZE == 16
7834 # define NV_NAN_PAYLOAD_MASK \
7835 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, \
7836 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
7837 # define NV_NAN_PAYLOAD_PERM \
7838 NV_NAN_PAYLOAD_PERM_0_TO_7, \
7839 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
7841 # error "Unexpected x86 80-bit little-endian long double format"
7843 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_X86_80_BIT_BIG_ENDIAN
7844 # if LONG_DOUBLESIZE == 10
7845 # define NV_NAN_PAYLOAD_MASK \
7846 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \
7848 # define NV_NAN_PAYLOAD_PERM \
7849 NV_NAN_PAYLOAD_PERM_7_TO_0, 0xFF, 0xFF
7850 # elif LONG_DOUBLESIZE == 12
7851 # define NV_NAN_PAYLOAD_MASK \
7852 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \
7853 0xff, 0xff, 0x00, 0x00
7854 # define NV_NAN_PAYLOAD_PERM \
7855 NV_NAN_PAYLOAD_PERM_7_TO_0, 0xFF, 0xFF, 0xFF, 0xFF
7856 # elif LONG_DOUBLESIZE == 16
7857 # define NV_NAN_PAYLOAD_MASK \
7858 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, \
7859 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
7860 # define NV_NAN_PAYLOAD_PERM \
7861 NV_NAN_PAYLOAD_PERM_7_TO_0, \
7862 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
7864 # error "Unexpected x86 80-bit big-endian long double format"
7866 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_LE
7867 /* For double-double we assume only the first double (in LE or BE terms)
7868 * is used for NaN. */
7869 # define NV_NAN_PAYLOAD_MASK \
7870 NV_NAN_PAYLOAD_MASK_SKIP_EIGHT, NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE
7871 # define NV_NAN_PAYLOAD_PERM \
7872 NV_NAN_PAYLOAD_PERM_SKIP_EIGHT, NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE
7873 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_BE
7874 # define NV_NAN_PAYLOAD_MASK \
7875 NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE
7876 # define NV_NAN_PAYLOAD_PERM \
7877 NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE
7878 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_LE_BE
7879 # define NV_NAN_PAYLOAD_MASK \
7880 NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE
7881 # define NV_NAN_PAYLOAD_PERM \
7882 NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE
7883 # elif LONG_DOUBLEKIND == LONG_DOUBLE_IS_DOUBLEDOUBLE_128_BIT_BE_LE
7884 # define NV_NAN_PAYLOAD_MASK \
7885 NV_NAN_PAYLOAD_MASK_SKIP_EIGHT, NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE
7886 # define NV_NAN_PAYLOAD_PERM \
7887 NV_NAN_PAYLOAD_PERM_SKIP_EIGHT, NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE
7889 # error "Unexpected long double format"
7892 # ifdef USE_QUADMATH /* quadmath is not long double */
7893 # ifdef NV_LITTLE_ENDIAN
7894 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE
7895 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE
7896 # elif defined(NV_BIG_ENDIAN)
7897 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE
7898 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE
7900 # error "Unexpected quadmath format"
7902 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_LITTLE_ENDIAN
7903 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0x07, 0x00
7904 # define NV_NAN_PAYLOAD_PERM 0x0, 0x1, 0x2, 0xFF
7905 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_32_BIT_BIG_ENDIAN
7906 # define NV_NAN_PAYLOAD_MASK 0x00, 0x07, 0xff, 0xff
7907 # define NV_NAN_PAYLOAD_PERM 0xFF, 0x2, 0x1, 0x0
7908 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_LITTLE_ENDIAN
7909 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_64_LE
7910 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_64_LE
7911 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_BIG_ENDIAN
7912 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_64_BE
7913 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_64_BE
7914 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_LITTLE_ENDIAN
7915 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_LE
7916 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_LE
7917 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_128_BIT_BIG_ENDIAN
7918 # define NV_NAN_PAYLOAD_MASK NV_NAN_PAYLOAD_MASK_IEEE_754_128_BE
7919 # define NV_NAN_PAYLOAD_PERM NV_NAN_PAYLOAD_PERM_IEEE_754_128_BE
7920 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_LE_BE
7921 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0x07, 0x00, 0xff, 0xff, 0xff, 0xff
7922 # define NV_NAN_PAYLOAD_PERM 0x4, 0x5, 0x6, 0xFF, 0x0, 0x1, 0x2, 0x3
7923 # elif DOUBLEKIND == DOUBLE_IS_IEEE_754_64_BIT_MIXED_ENDIAN_BE_LE
7924 # define NV_NAN_PAYLOAD_MASK 0xff, 0xff, 0xff, 0xff, 0x00, 0x07, 0xff, 0xff
7925 # define NV_NAN_PAYLOAD_PERM 0x3, 0x2, 0x1, 0x0, 0xFF, 0x6, 0x5, 0x4
7927 # error "Unexpected double format"
7931 #endif /* DOUBLE_HAS_NAN */
7936 (KEEP THIS LAST IN perl.h!)
7978 so that Configure picks them up.
7980 (KEEP THIS LAST IN perl.h!)
7984 #endif /* Include guard */
7987 * ex: set ts=8 sts=4 sw=4 et: