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)
66 # ifndef PERL_IMPLICIT_CONTEXT
67 # define PERL_IMPLICIT_CONTEXT
71 /* undef WIN32 when building on Cygwin (for libwin32) - gph */
77 /* Use the reentrant APIs like localtime_r and getpwent_r */
78 /* Win32 has naturally threadsafe libraries, no need to use any _r variants.
79 * XXX KEEP makedef.pl copy of this code in sync */
80 #if defined(USE_ITHREADS) && !defined(USE_REENTRANT_API) && !defined(NETWARE) && !defined(WIN32)
81 # define USE_REENTRANT_API
84 /* <--- here ends the logic shared by perl.h and makedef.pl */
87 =for apidoc_section $directives
88 =for apidoc AmnUu|void|EXTERN_C
89 When not compiling using C++, expands to nothing.
90 Otherwise is used in a declaration of a function to indicate the function
91 should have external C linkage. This is required for things to work for just
92 about all functions with external linkage compiled into perl.
93 Often, you can use C<L</START_EXTERN_C>> ... C<L</END_EXTERN_C>> blocks
94 surrounding all your code that you need to have this linkage.
98 EXTERN_C int flock(int fd, int op);
100 =for apidoc Amnu||START_EXTERN_C
101 When not compiling using C++, expands to nothing.
102 Otherwise begins a section of code in which every function will effectively
103 have C<L</EXTERN_C>> applied to it, that is to have external C linkage. The
104 section is ended by a C<L</END_EXTERN_C>>.
106 =for apidoc Amnu||END_EXTERN_C
107 When not compiling using C++, expands to nothing.
108 Otherwise ends a section of code already begun by a C<L</START_EXTERN_C>>.
113 #undef START_EXTERN_C
117 # define EXTERN_C extern "C"
118 # define START_EXTERN_C EXTERN_C {
119 # define END_EXTERN_C }
121 # define START_EXTERN_C
122 # define END_EXTERN_C
123 # define EXTERN_C extern
126 /* Fallback definitions in case we don't have definitions from config.h.
127 This should only matter for systems that don't use Configure and
128 haven't been modified to define PERL_STATIC_INLINE yet.
130 #if !defined(PERL_STATIC_INLINE)
131 # ifdef HAS_STATIC_INLINE
132 # define PERL_STATIC_INLINE static inline
134 # define PERL_STATIC_INLINE static
138 #ifdef PERL_IMPLICIT_CONTEXT
139 # ifndef MULTIPLICITY
140 # define MULTIPLICITY
142 # define tTHX PerlInterpreter*
143 # define pTHX tTHX my_perl PERL_UNUSED_DECL
144 # define aTHX my_perl
145 # define aTHXa(a) aTHX = (tTHX)a
146 # define dTHXa(a) pTHX = (tTHX)a
147 # define dTHX pTHX = PERL_GET_THX
160 # if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL)
161 # define PERL_TRACK_MEMPOOL
164 # undef PERL_TRACK_MEMPOOL
168 # define dTHX_DEBUGGING dTHX
170 # define dTHX_DEBUGGING dNOOP
173 #define STATIC static
176 /* Do not use these macros. They were part of PERL_OBJECT, which was an
177 * implementation of multiplicity using C++ objects. They have been left
178 * here solely for the sake of XS code which has incorrectly
181 * The only one Devel::PPPort handles is this; list it as deprecated
183 =for apidoc_section $concurrency
184 =for apidoc AmD|void|CPERLscope|void x
189 #define CPERLscope(x) x
190 #define CPERLarg void
193 #define PERL_OBJECT_THIS
194 #define _PERL_OBJECT_THIS
195 #define PERL_OBJECT_THIS_
196 #define CALL_FPTR(fptr) (*fptr)
197 #define MEMBER_TO_FPTR(name) name
198 #endif /* !PERL_CORE */
200 #define CALLRUNOPS PL_runops
202 #define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags))
204 #define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags)
205 #define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \
206 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \
207 (strbeg),(minend),(sv),(data),(flags))
208 #define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \
209 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \
210 (strend),(flags),(data))
211 #define CALLREG_INTUIT_STRING(prog) \
212 RX_ENGINE(prog)->checkstr(aTHX_ (prog))
214 #define CALLREGFREE(prog) \
215 Perl_pregfree(aTHX_ (prog))
217 #define CALLREGFREE_PVT(prog) \
218 if(prog && RX_ENGINE(prog)) RX_ENGINE(prog)->rxfree(aTHX_ (prog))
220 #define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \
221 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv))
223 #define CALLREG_NUMBUF_STORE(rx,paren,value) \
224 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value))
226 #define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \
227 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren))
229 #define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \
230 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH))
232 #define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \
233 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE))
235 #define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \
236 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE))
238 #define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \
239 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR))
241 #define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \
242 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS))
244 #define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \
245 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY))
247 #define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \
248 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY))
250 #define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \
251 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR))
253 #define CALLREG_NAMED_BUFF_COUNT(rx) \
254 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT)
256 #define CALLREG_NAMED_BUFF_ALL(rx, flags) \
257 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags)
259 #define CALLREG_PACKAGE(rx) \
260 RX_ENGINE(rx)->qr_package(aTHX_ (rx))
262 #if defined(USE_ITHREADS)
263 #define CALLREGDUPE(prog,param) \
264 Perl_re_dup(aTHX_ (prog),(param))
266 #define CALLREGDUPE_PVT(prog,param) \
267 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \
271 /* some compilers impersonate gcc */
272 #if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
273 # define PERL_IS_GCC 1
276 /* In case Configure was not used (we are using a "canned config"
277 * such as Win32, or a cross-compilation setup, for example) try going
278 * by the gcc major and minor versions. One useful URL is
279 * http://www.ohse.de/uwe/articles/gcc-attributes.html,
280 * but contrary to this information warn_unused_result seems
281 * not to be in gcc 3.3.5, at least. --jhi
282 * Also, when building extensions with an installed perl, this allows
283 * the user to upgrade gcc and get the right attributes, rather than
284 * relying on the list generated at Configure time. --AD
285 * Set these up now otherwise we get confused when some of the <*thread.h>
286 * includes below indirectly pull in <perlio.h> (which needs to know if we
287 * have HASATTRIBUTE_FORMAT).
291 #if defined __GNUC__ && !defined(__INTEL_COMPILER)
292 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 1 || __GNUC__ > 3 /* 3.1 -> */
293 # define HASATTRIBUTE_DEPRECATED
295 # if __GNUC__ >= 3 /* 3.0 -> */ /* XXX Verify this version */
296 # define HASATTRIBUTE_FORMAT
297 # if defined __MINGW32__
298 # define PRINTF_FORMAT_NULL_OK
301 # if __GNUC__ >= 3 /* 3.0 -> */
302 # define HASATTRIBUTE_MALLOC
304 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 3 || __GNUC__ > 3 /* 3.3 -> */
305 # define HASATTRIBUTE_NONNULL
307 # if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 || __GNUC__ > 2 /* 2.5 -> */
308 # define HASATTRIBUTE_NORETURN
310 # if __GNUC__ >= 3 /* gcc 3.0 -> */
311 # define HASATTRIBUTE_PURE
313 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
314 # define HASATTRIBUTE_UNUSED
316 # if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus)
317 # define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */
319 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
320 # define HASATTRIBUTE_WARN_UNUSED_RESULT
322 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */
323 # if __GNUC__ == 4 && __GNUC_MINOR__ >= 7 || __GNUC__ > 4 /* 4.7 -> */
324 # define HASATTRIBUTE_ALWAYS_INLINE
327 #endif /* #ifndef PERL_MICRO */
329 #ifdef HASATTRIBUTE_DEPRECATED
330 # define __attribute__deprecated__ __attribute__((deprecated))
332 #ifdef HASATTRIBUTE_FORMAT
333 # define __attribute__format__(x,y,z) __attribute__((format(x,y,z)))
335 #ifdef HASATTRIBUTE_MALLOC
336 # define __attribute__malloc__ __attribute__((__malloc__))
338 #ifdef HASATTRIBUTE_NONNULL
339 # define __attribute__nonnull__(a) __attribute__((nonnull(a)))
341 #ifdef HASATTRIBUTE_NORETURN
342 # define __attribute__noreturn__ __attribute__((noreturn))
344 #ifdef HASATTRIBUTE_PURE
345 # define __attribute__pure__ __attribute__((pure))
347 #ifdef HASATTRIBUTE_UNUSED
348 # define __attribute__unused__ __attribute__((unused))
350 #ifdef HASATTRIBUTE_WARN_UNUSED_RESULT
351 # define __attribute__warn_unused_result__ __attribute__((warn_unused_result))
353 #ifdef HASATTRIBUTE_ALWAYS_INLINE
354 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */
355 # if !defined(PERL_IS_GCC) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7 || __GNUC__ > 4)
356 # define __attribute__always_inline__ __attribute__((always_inline))
360 /* If we haven't defined the attributes yet, define them to blank. */
361 #ifndef __attribute__deprecated__
362 # define __attribute__deprecated__
364 #ifndef __attribute__format__
365 # define __attribute__format__(x,y,z)
367 #ifndef __attribute__malloc__
368 # define __attribute__malloc__
370 #ifndef __attribute__nonnull__
371 # define __attribute__nonnull__(a)
373 #ifndef __attribute__noreturn__
374 # define __attribute__noreturn__
376 #ifndef __attribute__pure__
377 # define __attribute__pure__
379 #ifndef __attribute__unused__
380 # define __attribute__unused__
382 #ifndef __attribute__warn_unused_result__
383 # define __attribute__warn_unused_result__
385 #ifndef __attribute__always_inline__
386 # define __attribute__always_inline__
389 /* Some OS warn on NULL format to printf */
390 #ifdef PRINTF_FORMAT_NULL_OK
391 # define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z)
393 # define __attribute__format__null_ok__(x,y,z)
397 * Because of backward compatibility reasons the PERL_UNUSED_DECL
398 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh.
400 * Note that there are C compilers such as MetroWerks CodeWarrior
401 * which do not have an "inlined" way (like the gcc __attribute__) of
402 * marking unused variables (they need e.g. a #pragma) and therefore
403 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even
404 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above).
406 =for apidoc_section $directives
407 =for apidoc AmnU||PERL_UNUSED_DECL
408 Tells the compiler that the parameter in the function prototype just before it
409 is not necessarily expected to be used in the function. Not that many
410 compilers understand this, so this should only be used in cases where
411 C<L</PERL_UNUSED_ARG>> can't conveniently be used.
418 Perl_perly_sighandler(int sig, Siginfo_t *sip PERL_UNUSED_DECL,
419 void *uap PERL_UNUSED_DECL, bool safe)
426 #ifndef PERL_UNUSED_DECL
427 # define PERL_UNUSED_DECL __attribute__unused__
431 * for silencing unused variables that are actually used most of the time,
432 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs,
433 * or variables/arguments that are used only in certain configurations.
435 =for apidoc Ams||PERL_UNUSED_ARG|void x
436 This is used to suppress compiler warnings that a parameter to a function is
437 not used. This situation can arise, for example, when a parameter is needed
438 under some configuration conditions, but not others, so that C preprocessor
439 conditional compilation causes it be used just some times.
441 =for apidoc Amns||PERL_UNUSED_CONTEXT
442 This is used to suppress compiler warnings that the thread context parameter to
443 a function is not used. This situation can arise, for example, when a
444 C preprocessor conditional compilation causes it be used just some times.
446 =for apidoc Ams||PERL_UNUSED_VAR|void x
447 This is used to suppress compiler warnings that the variable I<x> is not used.
448 This situation can arise, for example, when a C preprocessor conditional
449 compilation causes it be used just some times.
453 #ifndef PERL_UNUSED_ARG
454 # define PERL_UNUSED_ARG(x) ((void)sizeof(x))
456 #ifndef PERL_UNUSED_VAR
457 # define PERL_UNUSED_VAR(x) ((void)sizeof(x))
460 #if defined(USE_ITHREADS)
461 # define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl)
463 # define PERL_UNUSED_CONTEXT
466 /* gcc (-ansi) -pedantic doesn't allow gcc statement expressions,
467 * g++ allows them but seems to have problems with them
468 * (insane errors ensue).
469 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2).
471 #if defined(PERL_GCC_PEDANTIC) || \
472 (defined(__GNUC__) && defined(__cplusplus) && \
473 ((__GNUC__ < 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ < 2))))
474 # ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
475 # define PERL_GCC_BRACE_GROUPS_FORBIDDEN
481 =for apidoc Am||PERL_UNUSED_RESULT|void x
483 This macro indicates to discard the return value of the function call inside
486 PERL_UNUSED_RESULT(foo(a, b))
488 The main reason for this is that the combination of C<gcc -Wunused-result>
489 (part of C<-Wall>) and the C<__attribute__((warn_unused_result))> cannot
490 be silenced with casting to C<void>. This causes trouble when the system
491 header files use the attribute.
493 Use C<PERL_UNUSED_RESULT> sparingly, though, since usually the warning
494 is there for a good reason: you might lose success/failure information,
495 or leak resources, or changes in resources.
497 But sometimes you just want to ignore the return value, I<e.g.>, on
498 codepaths soon ending up in abort, or in "best effort" attempts,
499 or in situations where there is no good way to handle failures.
501 Sometimes C<PERL_UNUSED_RESULT> might not be the most natural way:
502 another possibility is that you can capture the return value
503 and use C<L</PERL_UNUSED_VAR>> on that.
507 The __typeof__() is used instead of typeof() since typeof() is not
508 available under strict C89, and because of compilers masquerading
509 as gcc (clang and icc), we want exactly the gcc extension
510 __typeof__ and nothing else.
513 #ifndef PERL_UNUSED_RESULT
514 # if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT)
515 # define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END
517 # define PERL_UNUSED_RESULT(v) ((void)(v))
521 #if defined(_MSC_VER)
522 /* XXX older MSVC versions have a smallish macro buffer */
523 #define PERL_SMALL_MACRO_BUFFER
526 /* on gcc (and clang), specify that a warning should be temporarily
529 * GCC_DIAG_IGNORE_DECL(-Wmultichar);
531 * GCC_DIAG_RESTORE_DECL;
533 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html
535 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011;
536 * clang only pretends to be GCC 4.2, but still supports push/pop.
538 * Note on usage: all macros must be used at a place where a declaration
539 * or statement can occur, i.e., not in the middle of an expression.
540 * *_DIAG_IGNORE() and *_DIAG_RESTORE can be used in any such place, but
541 * must be used without a following semicolon. *_DIAG_IGNORE_DECL() and
542 * *_DIAG_RESTORE_DECL must be used with a following semicolon, and behave
543 * syntactically as declarations (like dNOOP). *_DIAG_IGNORE_STMT()
544 * and *_DIAG_RESTORE_STMT must be used with a following semicolon,
545 * and behave syntactically as statements (like NOOP).
549 #if defined(__clang__) || defined(__clang) || \
550 (defined( __GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406)
551 # define GCC_DIAG_PRAGMA(x) _Pragma (#x)
552 /* clang has "clang diagnostic" pragmas, but also understands gcc. */
553 # define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \
554 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x)
555 # define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop")
557 # define GCC_DIAG_IGNORE(w)
558 # define GCC_DIAG_RESTORE
560 #define GCC_DIAG_IGNORE_DECL(x) GCC_DIAG_IGNORE(x) dNOOP
561 #define GCC_DIAG_RESTORE_DECL GCC_DIAG_RESTORE dNOOP
562 #define GCC_DIAG_IGNORE_STMT(x) GCC_DIAG_IGNORE(x) NOOP
563 #define GCC_DIAG_RESTORE_STMT GCC_DIAG_RESTORE NOOP
564 /* for clang specific pragmas */
565 #if defined(__clang__) || defined(__clang)
566 # define CLANG_DIAG_PRAGMA(x) _Pragma (#x)
567 # define CLANG_DIAG_IGNORE(x) _Pragma("clang diagnostic push") \
568 CLANG_DIAG_PRAGMA(clang diagnostic ignored #x)
569 # define CLANG_DIAG_RESTORE _Pragma("clang diagnostic pop")
571 # define CLANG_DIAG_IGNORE(w)
572 # define CLANG_DIAG_RESTORE
574 #define CLANG_DIAG_IGNORE_DECL(x) CLANG_DIAG_IGNORE(x) dNOOP
575 #define CLANG_DIAG_RESTORE_DECL CLANG_DIAG_RESTORE dNOOP
576 #define CLANG_DIAG_IGNORE_STMT(x) CLANG_DIAG_IGNORE(x) NOOP
577 #define CLANG_DIAG_RESTORE_STMT CLANG_DIAG_RESTORE NOOP
579 #if defined(_MSC_VER) && (_MSC_VER >= 1300)
580 # define MSVC_DIAG_IGNORE(x) __pragma(warning(push)) \
581 __pragma(warning(disable : x))
582 # define MSVC_DIAG_RESTORE __pragma(warning(pop))
584 # define MSVC_DIAG_IGNORE(x)
585 # define MSVC_DIAG_RESTORE
587 #define MSVC_DIAG_IGNORE_DECL(x) MSVC_DIAG_IGNORE(x) dNOOP
588 #define MSVC_DIAG_RESTORE_DECL MSVC_DIAG_RESTORE dNOOP
589 #define MSVC_DIAG_IGNORE_STMT(x) MSVC_DIAG_IGNORE(x) NOOP
590 #define MSVC_DIAG_RESTORE_STMT MSVC_DIAG_RESTORE NOOP
593 =for apidoc Amns||NOOP
594 Do nothing; typically used as a placeholder to replace something that used to
597 =for apidoc Amns||dNOOP
598 Declare nothing; typically used as a placeholder to replace something that used
599 to declare something. Works on compilers that require declarations before any
604 #define NOOP /*EMPTY*/(void)0
605 #define dNOOP struct Perl___notused_struct
608 /* Don't bother defining tTHX ; using it outside
609 * code guarded by PERL_IMPLICIT_CONTEXT is an error.
615 # define aTHXa(a) NOOP
616 # define dTHXa(a) dNOOP
631 =for apidoc_section $concurrency
632 =for apidoc AmnU||dVAR
633 This is now a synonym for dNOOP: declare nothing
639 /* Backwards compatibility macro for XS code. It used to be part of the
640 * PERL_GLOBAL_STRUCT(_PRIVATE) feature, which no longer exists */
643 /* these are only defined for compatibility; should not be used internally.
647 # define pTHXo_ pTHX_
649 # define aTHXo_ aTHX_
651 # define dTHXoa(x) dTHXa(x)
656 # define pTHXx PerlInterpreter *my_perl
657 # define pTHXx_ pTHXx,
658 # define aTHXx my_perl
659 # define aTHXx_ aTHXx,
663 /* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation)
664 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...).
665 * dTHXs is therefore needed for all functions using PerlIO_foo(). */
666 #ifdef PERL_IMPLICIT_SYS
672 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
673 # ifndef PERL_USE_GCC_BRACE_GROUPS
674 # define PERL_USE_GCC_BRACE_GROUPS
679 =for apidoc_section $directives
680 =for apidoc AmnUu|void|STMT_START
681 =for apidoc_item ||STMT_END
683 This allows a series of statements in a macro to be used as a single statement,
686 if (x) STMT_START { ... } STMT_END else ...
688 Note that you can't return a value out of them, which limits their utility.
689 But see C<L</PERL_USE_GCC_BRACE_GROUPS>>.
691 =for apidoc AmnuU|bool|PERL_USE_GCC_BRACE_GROUPS
693 This C pre-processor value, if defined, indicates that it is permissible to use
694 the GCC brace groups extension. This extension, of the form
698 turns the block consisting of I<statements ...> into an expression with a
699 value, unlike plain C language blocks. This can present optimization
700 possibilities, B<BUT> you generally need to specify an alternative in case this
701 ability doesn't exist or has otherwise been forbidden.
707 #ifdef PERL_USE_GCC_BRACE_GROUPS
717 Trying to select a version that gives no warnings...
719 #if !(defined(STMT_START) && defined(STMT_END))
720 # ifdef PERL_USE_GCC_BRACE_GROUPS
721 # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
724 # define STMT_START do
725 # define STMT_END while (0)
729 #ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
730 # define BYTEORDER 0x1234
733 #if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
740 * The following contortions are brought to you on behalf of all the
741 * standards, semi-standards, de facto standards, not-so-de-facto standards
742 * of the world, as well as all the other botches anyone ever thought of.
743 * The basic theory is that if we work hard enough here, the rest of the
744 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
747 /* define this once if either system, instead of cluttering up the src */
748 #if defined(MSDOS) || defined(WIN32) || defined(NETWARE)
752 /* These exist only for back-compat with XS modules. */
755 #define CAN_PROTOTYPE
762 /* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT,
763 * you get a perl without taint support, but doubtlessly with a lesser
764 * degree of support. Do not do so unless you know exactly what it means
765 * technically, have a good reason to do so, and know exactly how the
766 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered
767 * a potential security risk due to flat out ignoring the security-relevant
768 * taint flags. This being said, a perl without taint support compiled in
769 * has marginal run-time performance benefits.
770 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT.
771 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it
772 * silently ignores -t/-T instead of throwing an exception.
774 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT
775 * voids your nonexistent warranty!
777 #if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT)
778 # define NO_TAINT_SUPPORT 1
781 /* NO_TAINT_SUPPORT can be set to transform virtually all taint-related
782 * operations into no-ops for a very modest speed-up. Enable only if you
783 * know what you're doing: tests and CPAN modules' tests are bound to fail.
785 #ifdef NO_TAINT_SUPPORT
787 # define TAINT_NOT NOOP
788 # define TAINT_IF(c) NOOP
789 # define TAINT_ENV() NOOP
790 # define TAINT_PROPER(s) NOOP
791 # define TAINT_set(s) NOOP
793 # define TAINTING_get 0
794 # define TAINTING_set(s) NOOP
795 # define TAINT_WARN_get 0
796 # define TAINT_WARN_set(s) NOOP
798 /* Set to tainted if we are running under tainting mode */
799 # define TAINT (PL_tainted = PL_tainting)
801 # define TAINT_NOT (PL_tainted = FALSE) /* Untaint */
802 # define TAINT_IF(c) if (UNLIKELY(c)) { TAINT; } /* Conditionally taint */
803 # define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); }
804 /* croak or warn if tainting */
805 # define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { \
806 taint_proper(NULL, s); \
808 # define TAINT_set(s) (PL_tainted = (s))
809 # define TAINT_get (cBOOL(UNLIKELY(PL_tainted))) /* Is something tainted? */
810 # define TAINTING_get (cBOOL(UNLIKELY(PL_tainting))) /* Is taint checking enabled? */
811 # define TAINTING_set(s) (PL_tainting = (s))
812 # define TAINT_WARN_get (PL_taint_warn) /* FALSE => tainting violations
816 # define TAINT_WARN_set(s) (PL_taint_warn = (s))
819 /* flags used internally only within pp_subst and pp_substcont */
821 # define SUBST_TAINT_STR 1 /* string tainted */
822 # define SUBST_TAINT_PAT 2 /* pattern tainted */
823 # define SUBST_TAINT_REPL 4 /* replacement tainted */
824 # define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */
825 # define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */
828 /* XXX All process group stuff is handled in pp_sys.c. Should these
829 defines move there? If so, I could simplify this a lot. --AD 9/96.
831 /* Process group stuff changed from traditional BSD to POSIX.
832 perlfunc.pod documents the traditional BSD-style syntax, so we'll
833 try to preserve that, if possible.
836 # define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
837 #elif defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
838 # define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
839 #elif defined(HAS_SETPGRP2)
840 # define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
842 #if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
843 # define HAS_SETPGRP /* Well, effectively it does . . . */
846 /* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
847 our life easier :-) so we'll try it.
850 # define BSD_GETPGRP(pid) getpgid((pid))
851 #elif defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
852 # define BSD_GETPGRP(pid) getpgrp((pid))
853 #elif defined(HAS_GETPGRP2)
854 # define BSD_GETPGRP(pid) getpgrp2((pid))
856 #if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
857 # define HAS_GETPGRP /* Well, effectively it does . . . */
860 /* These are not exact synonyms, since setpgrp() and getpgrp() may
861 have different behaviors, but perl.h used to define USE_BSDPGRP
862 (prior to 5.003_05) so some extension might depend on it.
864 #if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
870 /* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that
871 pthread.h must be included before all other header files.
873 #if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
874 # include <pthread.h>
877 #include <sys/types.h>
893 #ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
906 # include <xlocale.h>
909 /* If not forbidden, we enable locale handling if either 1) the POSIX 2008
910 * functions are available, or 2) just the setlocale() function. This logic is
911 * repeated in t/loc_tools.pl and makedef.pl; The three should be kept in
913 #if ! defined(NO_LOCALE)
915 # if ! defined(NO_POSIX_2008_LOCALE) \
916 && defined(HAS_NEWLOCALE) \
917 && defined(HAS_USELOCALE) \
918 && defined(HAS_DUPLOCALE) \
919 && defined(HAS_FREELOCALE) \
920 && defined(LC_ALL_MASK)
922 /* For simplicity, the code is written to assume that any platform advanced
923 * enough to have the Posix 2008 locale functions has LC_ALL. The final
924 * test above makes sure that assumption is valid */
926 # define HAS_POSIX_2008_LOCALE
928 # elif defined(HAS_SETLOCALE)
934 # define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
936 # if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
937 && defined(HAS_STRXFRM)
938 # define USE_LOCALE_COLLATE
940 # if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
941 # define USE_LOCALE_CTYPE
943 # if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
944 # define USE_LOCALE_NUMERIC
946 # if !defined(NO_LOCALE_MESSAGES) && defined(LC_MESSAGES)
947 # define USE_LOCALE_MESSAGES
949 # if !defined(NO_LOCALE_MONETARY) && defined(LC_MONETARY)
950 # define USE_LOCALE_MONETARY
952 # if !defined(NO_LOCALE_TIME) && defined(LC_TIME)
953 # define USE_LOCALE_TIME
955 # if !defined(NO_LOCALE_ADDRESS) && defined(LC_ADDRESS)
956 # define USE_LOCALE_ADDRESS
958 # if !defined(NO_LOCALE_IDENTIFICATION) && defined(LC_IDENTIFICATION)
959 # define USE_LOCALE_IDENTIFICATION
961 # if !defined(NO_LOCALE_MEASUREMENT) && defined(LC_MEASUREMENT)
962 # define USE_LOCALE_MEASUREMENT
964 # if !defined(NO_LOCALE_PAPER) && defined(LC_PAPER)
965 # define USE_LOCALE_PAPER
967 # if !defined(NO_LOCALE_TELEPHONE) && defined(LC_TELEPHONE)
968 # define USE_LOCALE_TELEPHONE
970 # if !defined(NO_LOCALE_SYNTAX) && defined(LC_SYNTAX)
971 # define USE_LOCALE_SYNTAX
973 # if !defined(NO_LOCALE_TOD) && defined(LC_TOD)
974 # define USE_LOCALE_TOD
977 /* XXX The next few defines are unfortunately duplicated in makedef.pl, and
978 * changes here MUST also be made there */
980 # if ! defined(HAS_SETLOCALE) && defined(HAS_POSIX_2008_LOCALE)
981 # define USE_POSIX_2008_LOCALE
982 # ifndef USE_THREAD_SAFE_LOCALE
983 # define USE_THREAD_SAFE_LOCALE
986 * -DUSE_THREAD_SAFE_LOCALE, will do so even
987 * on unthreaded builds */
988 # elif (defined(USE_ITHREADS) || defined(USE_THREAD_SAFE_LOCALE)) \
989 && ( defined(HAS_POSIX_2008_LOCALE) \
990 || (defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1400)) \
991 && ! defined(NO_THREAD_SAFE_LOCALE)
992 # ifndef USE_THREAD_SAFE_LOCALE
993 # define USE_THREAD_SAFE_LOCALE
995 # ifdef HAS_POSIX_2008_LOCALE
996 # define USE_POSIX_2008_LOCALE
1001 /* Microsoft documentation reads in the change log for VS 2015:
1002 * "The localeconv function declared in locale.h now works correctly when
1003 * per-thread locale is enabled. In previous versions of the library, this
1004 * function would return the lconv data for the global locale, not the
1007 #if defined(WIN32) && defined(USE_THREAD_SAFE_LOCALE) && _MSC_VER < 1900
1008 # define TS_W32_BROKEN_LOCALECONV
1014 # ifdef PARAM_NEEDS_TYPES
1015 # include <sys/types.h>
1017 # include <sys/param.h>
1020 /* On BSD-derived systems, <sys/param.h> defines BSD to a year-month
1021 value something like 199306. This may be useful if no more-specific
1022 feature test is available.
1030 /* Use all the "standard" definitions */
1033 /* If this causes problems, set i_unistd=undef in the hint file. */
1035 # if defined(__amigaos4__)
1036 # ifdef I_NETINET_IN
1037 # include <netinet/in.h>
1040 # include <unistd.h>
1041 # if defined(__amigaos4__)
1042 /* Under AmigaOS 4 newlib.library provides an environ. However using
1043 * it doesn't give us enough control over inheritance of variables by
1044 * subshells etc. so replace with custom version based on abc-shell
1046 extern char **myenviron;
1048 # define environ myenviron
1054 # include <sys/wait.h>
1057 #if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO)
1058 EXTERN_C int syscall(int, ...);
1061 #if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO)
1062 EXTERN_C int usleep(unsigned int);
1065 /* Macros for correct constant construction. These are in C99 <stdint.h>
1066 * (so they will not be available in strict C89 mode), but they are nice, so
1067 * let's define them if necessary.
1068 =for apidoc_section $integer
1069 =for apidoc Am|I16|INT16_C|number
1070 =for apidoc_item |I32|INT32_C|number
1071 =for apidoc_item |I64|INT64_C|number
1073 Returns a token the C compiler recognizes for the constant C<number> of the
1074 corresponding integer type on the machine.
1076 If the machine does not have a 64-bit type, C<INT64_C> is undefined.
1077 Use C<L</INTMAX_C>> to get the largest type available on the platform.
1079 =for apidoc Am|U16|UINT16_C|number
1080 =for apidoc_item |U32|UINT32_C|number
1081 =for apidoc_item |U64|UINT64_C|number
1083 Returns a token the C compiler recognizes for the constant C<number> of the
1084 corresponding unsigned integer type on the machine.
1086 If the machine does not have a 64-bit type, C<UINT64_C> is undefined.
1087 Use C<L</UINTMAX_C>> to get the largest type available on the platform.
1094 # define UINT16_C(x) ((U16_TYPE)x##U)
1096 # define UINT16_C(x) ((U16_TYPE)x##UL)
1102 # define UINT32_C(x) ((U32_TYPE)x##U)
1104 # define UINT32_C(x) ((U32_TYPE)x##UL)
1109 typedef intmax_t PERL_INTMAX_T;
1110 typedef uintmax_t PERL_UINTMAX_T;
1113 /* N.B. We use QUADKIND here instead of HAS_QUAD here, because that doesn't
1114 * actually mean what it has always been documented to mean (see RT #119753)
1115 * and is explicitly turned off outside of core with dire warnings about
1116 * removing the undef. */
1118 #if defined(QUADKIND)
1119 # undef PeRl_INT64_C
1120 # undef PeRl_UINT64_C
1121 /* Prefer the native integer types (int and long) over long long
1122 * (which is not C89) and Win32-specific __int64. */
1123 # if QUADKIND == QUAD_IS_INT && INTSIZE == 8
1124 # define PeRl_INT64_C(c) (c)
1125 # define PeRl_UINT64_C(c) CAT2(c,U)
1127 # if QUADKIND == QUAD_IS_LONG && LONGSIZE == 8
1128 # define PeRl_INT64_C(c) CAT2(c,L)
1129 # define PeRl_UINT64_C(c) CAT2(c,UL)
1131 # if QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LONG_LONG)
1132 # define PeRl_INT64_C(c) CAT2(c,LL)
1133 # define PeRl_UINT64_C(c) CAT2(c,ULL)
1135 # if QUADKIND == QUAD_IS___INT64
1136 # define PeRl_INT64_C(c) CAT2(c,I64)
1137 # define PeRl_UINT64_C(c) CAT2(c,UI64)
1139 # ifndef PeRl_INT64_C
1140 # define PeRl_INT64_C(c) ((I64)(c)) /* last resort */
1141 # define PeRl_UINT64_C(c) ((U64TYPE)(c))
1143 /* In OS X the INT64_C/UINT64_C are defined with LL/ULL, which will
1144 * not fly with C89-pedantic gcc, so let's undefine them first so that
1145 * we can redefine them with our native integer preferring versions. */
1146 # if defined(PERL_DARWIN) && defined(PERL_GCC_PEDANTIC)
1151 # define INT64_C(c) PeRl_INT64_C(c)
1154 # define UINT64_C(c) PeRl_UINT64_C(c)
1158 =for apidoc_section $integer
1159 =for apidoc Am||INTMAX_C|number
1160 Returns a token the C compiler recognizes for the constant C<number> of the
1161 widest integer type on the machine. For example, if the machine has C<long
1162 long>s, C<INTMAX_C(-1)> would yield
1166 See also, for example, C<L</INT32_C>>.
1168 Use L</IV> to declare variables of the maximum usable size on this platform.
1170 =for apidoc Am||UINTMAX_C|number
1171 Returns a token the C compiler recognizes for the constant C<number> of the
1172 widest unsigned integer type on the machine. For example, if the machine has
1173 C<long>s, C<UINTMAX_C(1)> would yield
1177 See also, for example, C<L</UINT32_C>>.
1179 Use L</UV> to declare variables of the maximum usable size on this platform.
1185 typedef I64TYPE PERL_INTMAX_T;
1186 typedef U64TYPE PERL_UINTMAX_T;
1189 # define INTMAX_C(c) INT64_C(c)
1192 # define UINTMAX_C(c) UINT64_C(c)
1195 #else /* below QUADKIND is undefined */
1197 /* Perl doesn't work on 16 bit systems, so must be 32 bit */
1199 typedef I32TYPE PERL_INTMAX_T;
1200 typedef U32TYPE PERL_UINTMAX_T;
1203 # define INTMAX_C(c) INT32_C(c)
1206 # define UINTMAX_C(c) UINT32_C(c)
1209 #endif /* no QUADKIND */
1213 /* byte-swapping functions for big-/little-endian conversion */
1214 # define _swab_16_(x) ((U16)( \
1215 (((U16)(x) & UINT16_C(0x00ff)) << 8) | \
1216 (((U16)(x) & UINT16_C(0xff00)) >> 8) ))
1218 # define _swab_32_(x) ((U32)( \
1219 (((U32)(x) & UINT32_C(0x000000ff)) << 24) | \
1220 (((U32)(x) & UINT32_C(0x0000ff00)) << 8) | \
1221 (((U32)(x) & UINT32_C(0x00ff0000)) >> 8) | \
1222 (((U32)(x) & UINT32_C(0xff000000)) >> 24) ))
1225 # define _swab_64_(x) ((U64)( \
1226 (((U64)(x) & UINT64_C(0x00000000000000ff)) << 56) | \
1227 (((U64)(x) & UINT64_C(0x000000000000ff00)) << 40) | \
1228 (((U64)(x) & UINT64_C(0x0000000000ff0000)) << 24) | \
1229 (((U64)(x) & UINT64_C(0x00000000ff000000)) << 8) | \
1230 (((U64)(x) & UINT64_C(0x000000ff00000000)) >> 8) | \
1231 (((U64)(x) & UINT64_C(0x0000ff0000000000)) >> 24) | \
1232 (((U64)(x) & UINT64_C(0x00ff000000000000)) >> 40) | \
1233 (((U64)(x) & UINT64_C(0xff00000000000000)) >> 56) ))
1236 /* The old value was hard coded at 1008. (4096-16) seems to be a bit faster,
1237 at least on FreeBSD. YMMV, so experiment. */
1238 #ifndef PERL_ARENA_SIZE
1239 #define PERL_ARENA_SIZE 4080
1242 /* Maximum level of recursion */
1243 #ifndef PERL_SUB_DEPTH_WARN
1244 #define PERL_SUB_DEPTH_WARN 100
1247 #endif /* PERL_CORE */
1249 /* Maximum number of args that may be passed to an OP_MULTICONCAT op.
1250 * It determines the size of local arrays in S_maybe_multiconcat() and
1253 #define PERL_MULTICONCAT_MAXARG 64
1255 /* The indexes of fields of a multiconcat aux struct.
1256 * The fixed fields are followed by nargs+1 const segment lengths,
1257 * and if utf8 and non-utf8 differ, a second nargs+1 set for utf8.
1260 #define PERL_MULTICONCAT_IX_NARGS 0 /* number of arguments */
1261 #define PERL_MULTICONCAT_IX_PLAIN_PV 1 /* non-utf8 constant string */
1262 #define PERL_MULTICONCAT_IX_PLAIN_LEN 2 /* non-utf8 constant string length */
1263 #define PERL_MULTICONCAT_IX_UTF8_PV 3 /* utf8 constant string */
1264 #define PERL_MULTICONCAT_IX_UTF8_LEN 4 /* utf8 constant string length */
1265 #define PERL_MULTICONCAT_IX_LENGTHS 5 /* first of nargs+1 const segment lens */
1266 #define PERL_MULTICONCAT_HEADER_SIZE 5 /* The number of fields of a
1267 multiconcat header */
1269 /* We no longer default to creating a new SV for GvSV.
1270 Do this before embed. */
1271 #ifndef PERL_CREATE_GVSV
1272 # ifndef PERL_DONT_CREATE_GVSV
1273 # define PERL_DONT_CREATE_GVSV
1277 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
1278 #define PERL_USES_PL_PIDSTATUS
1281 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP)
1282 #define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
1285 #define MEM_SIZE Size_t
1287 /* Round all values passed to malloc up, by default to a multiple of
1290 #ifndef PERL_STRLEN_ROUNDUP_QUANTUM
1291 #define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size
1294 /* sv_grow() will expand strings by at least a certain percentage of
1295 the previously *used* length to avoid excessive calls to realloc().
1296 The default is 25% of the current length.
1298 #ifndef PERL_STRLEN_EXPAND_SHIFT
1299 # define PERL_STRLEN_EXPAND_SHIFT 2
1302 /* This use of offsetof() requires /Zc:offsetof- for VS2017 (and presumably
1303 * onwards) when building Socket.xs, but we can just use a different definition
1304 * for STRUCT_OFFSET instead. */
1305 #if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1910
1306 # define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
1308 # include <stddef.h>
1309 # define STRUCT_OFFSET(s,m) offsetof(s,m)
1312 /* ptrdiff_t is C11, so undef it under pedantic builds. (Actually it is
1313 * in C89, but apparently there are platforms where it doesn't exist. See
1314 * thread beginning at http://nntp.perl.org/group/perl.perl5.porters/251541.)
1316 #ifdef PERL_GCC_PEDANTIC
1317 # undef HAS_PTRDIFF_T
1320 #ifdef HAS_PTRDIFF_T
1321 # define Ptrdiff_t ptrdiff_t
1323 # define Ptrdiff_t SSize_t
1326 # include <string.h>
1328 /* This comes after <stdlib.h> so we don't try to change the standard
1329 * library prototypes; we'll use our own in proto.h instead. */
1332 # ifdef PERL_POLLUTE_MALLOC
1333 # ifndef PERL_EXTMALLOC_DEF
1334 # define Perl_malloc malloc
1335 # define Perl_calloc calloc
1336 # define Perl_realloc realloc
1337 # define Perl_mfree free
1340 # define EMBEDMYMALLOC /* for compatibility */
1343 # define safemalloc Perl_malloc
1344 # define safecalloc Perl_calloc
1345 # define saferealloc Perl_realloc
1346 # define safefree Perl_mfree
1347 # define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \
1348 if (!TAINTING_get && MallocCfg_ptr[MallocCfg_cfg_env_read]) \
1351 # define CHECK_MALLOC_TOO_LATE_FOR(ch) \
1352 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch))
1353 # define panic_write2(s) write(2, s, strlen(s))
1354 # define CHECK_MALLOC_TAINT(newval) \
1355 CHECK_MALLOC_TOO_LATE_FOR_( \
1357 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\
1359 # define MALLOC_CHECK_TAINT(argc,argv,env) STMT_START { \
1360 if (doing_taint(argc,argv,env)) { \
1361 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \
1363 #else /* MYMALLOC */
1364 # define safemalloc safesysmalloc
1365 # define safecalloc safesyscalloc
1366 # define saferealloc safesysrealloc
1367 # define safefree safesysfree
1368 # define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0)
1369 # define CHECK_MALLOC_TAINT(newval) ((void)0)
1370 # define MALLOC_CHECK_TAINT(argc,argv,env)
1371 #endif /* MYMALLOC */
1373 /* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */
1374 #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)
1375 #define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "")
1376 #define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
1377 #define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
1380 =for apidoc Am|void|memzero|void * d|Size_t l
1381 Set the C<l> bytes starting at C<*d> to all zeroes.
1386 # define memzero(d,l) memset(d,0,l)
1390 # include <netinet/in.h>
1394 # include <arpa/inet.h>
1398 # include <sys/stat.h>
1401 /* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO.
1402 This definition should ideally go into win32/win32.h, but S_IFIFO is
1403 used later here in perl.h before win32/win32.h is being included. */
1404 #if !defined(S_IFIFO) && defined(_S_IFIFO)
1405 # define S_IFIFO _S_IFIFO
1408 /* The stat macros for Unisoft System V/88 (and derivatives
1409 like UTekV) are broken, sometimes giving false positives. Undefine
1410 them here and let the code below set them to proper values.
1412 The ghs macro stands for GreenHills Software C-1.8.5 which
1413 is the C compiler for sysV88 and the various derivatives.
1414 This header file bug is corrected in gcc-2.5.8 and later versions.
1415 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
1417 #if defined(m88k) && defined(ghs)
1429 # ifdef I_SYS_TIME_KERNEL
1432 # include <sys/time.h>
1433 # ifdef I_SYS_TIME_KERNEL
1438 #if defined(HAS_TIMES) && defined(I_SYS_TIMES)
1439 # include <sys/times.h>
1444 #if defined(WIN32) && defined(PERL_IMPLICIT_SYS)
1445 # define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
1448 #if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */
1449 # include <sys/socket.h>
1450 # if defined(USE_SOCKS) && defined(I_SOCKS)
1451 # if !defined(INCLUDE_PROTOTYPES)
1452 # define INCLUDE_PROTOTYPES /* for <socks.h> */
1453 # define PERL_SOCKS_NEED_PROTOTYPES
1456 # ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
1457 # undef INCLUDE_PROTOTYPES
1458 # undef PERL_SOCKS_NEED_PROTOTYPES
1469 # include <net/errno.h>
1474 /* sockatmark() is so new (2001) that many places might have it hidden
1475 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required
1476 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */
1477 #if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO)
1478 # if defined(__THROW) && defined(__GLIBC__)
1479 int sockatmark(int) __THROW;
1481 int sockatmark(int);
1485 #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. */
1486 EXTERN_C int fchdir(int);
1487 EXTERN_C int flock(int, int);
1488 EXTERN_C int fseeko(FILE *, off_t, int);
1489 EXTERN_C off_t ftello(FILE *);
1492 #if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */
1493 EXTERN_C char *crypt(const char *, const char *);
1496 #if defined(__cplusplus) && defined(__CYGWIN__)
1497 EXTERN_C char *crypt(const char *, const char *);
1501 =for apidoc_section $errno
1503 =for apidoc m|void|SETERRNO|int errcode|int vmserrcode
1505 Set C<errno>, and on VMS set C<vaxc$errno>.
1507 =for apidoc mn|void|dSAVEDERRNO
1509 Declare variables needed to save C<errno> and any operating system
1510 specific error number.
1512 =for apidoc mn|void|dSAVE_ERRNO
1514 Declare variables needed to save C<errno> and any operating system
1515 specific error number, and save them for optional later restoration
1516 by C<RESTORE_ERRNO>.
1518 =for apidoc mn|void|SAVE_ERRNO
1520 Save C<errno> and any operating system specific error number for
1521 optional later restoration by C<RESTORE_ERRNO>. Requires
1522 C<dSAVEDERRNO> or C<dSAVE_ERRNO> in scope.
1524 =for apidoc mn|void|RESTORE_ERRNO
1526 Restore C<errno> and any operating system specific error number that
1527 was saved by C<dSAVE_ERRNO> or C<RESTORE_ERRNO>.
1533 # undef SETERRNO /* SOCKS might have defined this */
1537 # define SETERRNO(errcode,vmserrcode) \
1539 set_errno(errcode); \
1540 set_vaxc_errno(vmserrcode); \
1542 # define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno
1543 # define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno
1544 # define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno )
1545 # define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno)
1547 # define LIB_INVARG LIB$_INVARG
1548 # define RMS_DIR RMS$_DIR
1549 # define RMS_FAC RMS$_FAC
1550 # define RMS_FEX RMS$_FEX
1551 # define RMS_FNF RMS$_FNF
1552 # define RMS_IFI RMS$_IFI
1553 # define RMS_ISI RMS$_ISI
1554 # define RMS_PRV RMS$_PRV
1555 # define SS_ACCVIO SS$_ACCVIO
1556 # define SS_DEVOFFLINE SS$_DEVOFFLINE
1557 # define SS_IVCHAN SS$_IVCHAN
1558 # define SS_NORMAL SS$_NORMAL
1559 # define SS_NOPRIV SS$_NOPRIV
1560 # define SS_BUFFEROVF SS$_BUFFEROVF
1562 # define LIB_INVARG 0
1570 # define SS_ACCVIO 0
1571 # define SS_DEVOFFLINE 0
1572 # define SS_IVCHAN 0
1573 # define SS_NORMAL 0
1574 # define SS_NOPRIV 0
1575 # define SS_BUFFEROVF 0
1579 # define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno
1580 # define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError()
1581 # define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() )
1582 # define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) )
1586 # define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno
1587 # define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc
1588 # define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc )
1589 # define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno )
1593 # define SETERRNO(errcode,vmserrcode) (errno = (errcode))
1597 # define dSAVEDERRNO int saved_errno
1598 # define dSAVE_ERRNO int saved_errno = errno
1599 # define SAVE_ERRNO (saved_errno = errno)
1600 # define RESTORE_ERRNO (errno = saved_errno)
1604 =for apidoc_section $warning
1606 =for apidoc Amn|SV *|ERRSV
1608 Returns the SV for C<$@>, creating it if needed.
1610 =for apidoc Am|void|CLEAR_ERRSV
1612 Clear the contents of C<$@>, setting it to the empty string.
1614 This replaces any read-only SV with a fresh SV and removes any magic.
1616 =for apidoc Am|void|SANE_ERRSV
1618 Clean up ERRSV so we can safely set it.
1620 This replaces any read-only SV with a fresh writable copy and removes
1626 #define ERRSV GvSVn(PL_errgv)
1628 /* contains inlined gv_add_by_type */
1629 #define CLEAR_ERRSV() STMT_START { \
1630 SV ** const svp = &GvSV(PL_errgv); \
1632 *svp = newSVpvs(""); \
1633 } else if (SvREADONLY(*svp)) { \
1634 SvREFCNT_dec_NN(*svp); \
1635 *svp = newSVpvs(""); \
1637 SV *const errsv = *svp; \
1639 SvPOK_only(errsv); \
1640 if (SvMAGICAL(errsv)) { \
1646 /* contains inlined gv_add_by_type */
1647 #define SANE_ERRSV() STMT_START { \
1648 SV ** const svp = &GvSV(PL_errgv); \
1650 *svp = newSVpvs(""); \
1651 } else if (SvREADONLY(*svp)) { \
1652 SV *dupsv = newSVsv(*svp); \
1653 SvREFCNT_dec_NN(*svp); \
1656 SV *const errsv = *svp; \
1657 if (SvMAGICAL(errsv)) { \
1665 # define DEFSV (0 + GvSVn(PL_defgv))
1666 # define DEFSV_set(sv) \
1667 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv))
1668 # define SAVE_DEFSV \
1670 save_gp(PL_defgv, 0), \
1671 GvINTRO_off(PL_defgv), \
1672 SAVEGENERICSV(GvSV(PL_defgv)), \
1673 GvSV(PL_defgv) = NULL \
1676 # define DEFSV GvSVn(PL_defgv)
1677 # define DEFSV_set(sv) (GvSV(PL_defgv) = (sv))
1678 # define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
1682 =for apidoc_section $SV
1683 =for apidoc Amn|SV *|DEFSV
1684 Returns the SV associated with C<$_>
1686 =for apidoc Am|void|DEFSV_set|SV * sv
1687 Associate C<sv> with C<$_>
1689 =for apidoc Amn|void|SAVE_DEFSV
1690 Localize C<$_>. See L<perlguts/Localizing changes>.
1696 extern int errno; /* ANSI allows errno to be an lvalue expr.
1697 * For example in multithreaded environments
1698 * something like this might happen:
1699 * extern int *_errno(void);
1700 * #define errno (*_errno()) */
1703 #define UNKNOWN_ERRNO_MSG "(unknown)"
1706 #define Strerror(e) strerror((e), vaxc$errno)
1708 #define Strerror(e) strerror(e)
1713 # include <sys/ioctl.h>
1717 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
1718 # ifdef HAS_SOCKETPAIR
1719 # undef HAS_SOCKETPAIR
1726 #ifndef HAS_SOCKETPAIR
1728 # define socketpair Perl_my_socketpair
1733 # define htoni htons
1734 # define ntohi ntohs
1736 # define htoni htonl
1737 # define ntohi ntohl
1740 /* Configure already sets Direntry_t */
1741 #if defined(I_DIRENT)
1742 # include <dirent.h>
1743 #elif defined(I_SYS_NDIR)
1744 # include <sys/ndir.h>
1745 #elif defined(I_SYS_DIR)
1746 # include <sys/dir.h>
1750 * The following gobbledygook brought to you on behalf of __STDC__.
1751 * (I could just use #ifndef __STDC__, but this is more bulletproof
1752 * in the face of half-implementations.)
1755 #if defined(I_SYSMODE)
1756 #include <sys/mode.h>
1761 # define S_IFMT _S_IFMT
1763 # define S_IFMT 0170000
1768 # define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
1772 # define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
1777 # define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
1779 # define S_ISBLK(m) (0)
1784 # define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
1789 # define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
1791 # define S_ISFIFO(m) (0)
1797 # define S_ISLNK(m) _S_ISLNK(m)
1798 # elif defined(_S_IFLNK)
1799 # define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
1800 # elif defined(S_IFLNK)
1801 # define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
1803 # define S_ISLNK(m) (0)
1809 # define S_ISSOCK(m) _S_ISSOCK(m)
1810 # elif defined(_S_IFSOCK)
1811 # define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
1812 # elif defined(S_IFSOCK)
1813 # define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
1815 # define S_ISSOCK(m) (0)
1821 # define S_IRUSR S_IREAD
1822 # define S_IWUSR S_IWRITE
1823 # define S_IXUSR S_IEXEC
1825 # define S_IRUSR 0400
1826 # define S_IWUSR 0200
1827 # define S_IXUSR 0100
1833 # define S_IRGRP (S_IRUSR>>3)
1834 # define S_IWGRP (S_IWUSR>>3)
1835 # define S_IXGRP (S_IXUSR>>3)
1837 # define S_IRGRP 0040
1838 # define S_IWGRP 0020
1839 # define S_IXGRP 0010
1845 # define S_IROTH (S_IRUSR>>6)
1846 # define S_IWOTH (S_IWUSR>>6)
1847 # define S_IXOTH (S_IXUSR>>6)
1849 # define S_IROTH 0040
1850 # define S_IWOTH 0020
1851 # define S_IXOTH 0010
1856 # define S_ISUID 04000
1860 # define S_ISGID 02000
1864 # define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
1868 # define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
1872 # define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
1875 /* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h>
1876 * which would get included through <sys/file.h >, but that is 3000
1877 * lines in the future. --jhi */
1879 #if !defined(S_IREAD) && !defined(__HAIKU__)
1880 # define S_IREAD S_IRUSR
1883 #if !defined(S_IWRITE) && !defined(__HAIKU__)
1884 # define S_IWRITE S_IWUSR
1888 # define S_IEXEC S_IXUSR
1891 #if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
1892 # define SLOPPYDIVIDE
1899 /* This used to be conditionally defined based on whether we had a sprintf()
1900 * that correctly returns the string length (as required by C89), but we no
1901 * longer need that. XS modules can (and do) use this name, so it must remain
1902 * a part of the API that's visible to modules.
1904 =for apidoc_section $string
1905 =for apidoc ATmD|int|my_sprintf|NN char *buffer|NN const char *pat|...
1907 Do NOT use this due to the possibility of overflowing C<buffer>. Instead use
1912 #define my_sprintf sprintf
1915 * If we have v?snprintf() and the C99 variadic macros, we can just
1916 * use just the v?snprintf(). It is nice to try to trap the buffer
1917 * overflow, however, so if we are DEBUGGING, and we cannot use the
1918 * gcc statement expressions, then use the function wrappers which try
1919 * to trap the overflow. If we can use the gcc statement expressions,
1920 * we can try that even with the version that uses the C99 variadic
1924 /* Note that we do not check against snprintf()/vsnprintf() returning
1925 * negative values because that is non-standard behaviour and we use
1926 * snprintf/vsnprintf only iff HAS_VSNPRINTF has been defined, and
1927 * that should be true only if the snprintf()/vsnprintf() are true
1928 * to the standard. */
1930 #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
1933 # define my_snprintf Perl_my_snprintf
1934 # define PERL_MY_SNPRINTF_GUARDED
1935 #elif defined(HAS_SNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
1936 # ifdef PERL_USE_GCC_BRACE_GROUPS
1937 # define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; })
1938 # define PERL_MY_SNPRINTF_GUARDED
1940 # define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__)
1943 # define my_snprintf Perl_my_snprintf
1944 # define PERL_MY_SNPRINTF_GUARDED
1947 /* There is no quadmath_vsnprintf, and therefore my_vsnprintf()
1948 * dies if called under USE_QUADMATH. */
1949 #if defined(HAS_VSNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
1950 # ifdef PERL_USE_GCC_BRACE_GROUPS
1951 # define my_vsnprintf(buffer, max, ...) ({ int len = vsnprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, vsnprintf); len; })
1952 # define PERL_MY_VSNPRINTF_GUARDED
1954 # define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__)
1957 # define my_vsnprintf Perl_my_vsnprintf
1958 # define PERL_MY_VSNPRINTF_GUARDED
1961 /* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD()
1962 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore
1963 * the result of my_snprintf() or my_vsnprintf(). (No, you should not
1964 * completely ignore it: otherwise you cannot know whether your output
1967 * int len = my_sprintf(buf, max, ...);
1968 * PERL_MY_SNPRINTF_POST_GUARD(len, max);
1970 * The trick is that in certain platforms [a] the my_sprintf() already
1971 * contains the sanity check, while in certain platforms [b] it needs
1972 * to be done as a separate step. The POST_GUARD is that step-- in [a]
1973 * platforms the POST_GUARD actually does nothing since the check has
1974 * already been done. Watch out for the max being the same in both calls.
1976 * If you actually use the snprintf/vsnprintf return value already,
1977 * you assumedly are checking its validity somehow. But you can
1978 * insert the POST_GUARD() also in that case. */
1980 #ifndef PERL_MY_SNPRINTF_GUARDED
1981 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf)
1983 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1986 #ifndef PERL_MY_VSNPRINTF_GUARDED
1987 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf)
1989 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1993 # define my_strlcat strlcat
1996 #if defined(PERL_CORE) || defined(PERL_EXT)
1998 # define my_memrchr memrchr
2000 # define my_memrchr S_my_memrchr
2005 # define my_strlcpy strlcpy
2009 # define my_strnlen strnlen
2013 The IV type is supposed to be long enough to hold any integral
2015 --Andy Dougherty August 1996
2021 #if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
2022 # if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
2023 # define IV_MAX ((IV)INT64_MAX)
2024 # define IV_MIN ((IV)INT64_MIN)
2025 # define UV_MAX ((UV)UINT64_MAX)
2027 # define UINT64_MIN 0
2029 # define UV_MIN ((UV)UINT64_MIN)
2031 # define IV_MAX PERL_QUAD_MAX
2032 # define IV_MIN PERL_QUAD_MIN
2033 # define UV_MAX PERL_UQUAD_MAX
2034 # define UV_MIN PERL_UQUAD_MIN
2039 # if defined(INT32_MAX) && IVSIZE == 4
2040 # define IV_MAX ((IV)INT32_MAX)
2041 # define IV_MIN ((IV)INT32_MIN)
2042 # ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
2043 # define UV_MAX ((UV)UINT32_MAX)
2045 # define UV_MAX ((UV)4294967295U)
2048 # define UINT32_MIN 0
2050 # define UV_MIN ((UV)UINT32_MIN)
2052 # define IV_MAX PERL_LONG_MAX
2053 # define IV_MIN PERL_LONG_MIN
2054 # define UV_MAX PERL_ULONG_MAX
2055 # define UV_MIN PERL_ULONG_MIN
2066 #if !defined(PERL_CORE)
2067 /* We think that removing this decade-old undef this will cause too much
2068 breakage on CPAN for too little gain. (See RT #119753)
2069 However, we do need HAS_QUAD in the core for use by the drand48 code. */
2075 #define Size_t_MAX (~(Size_t)0)
2076 #define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1)
2078 #define IV_DIG (BIT_DIGITS(IVSIZE * 8))
2079 #define UV_DIG (BIT_DIGITS(UVSIZE * 8))
2081 #ifndef NO_PERL_PRESERVE_IVUV
2082 #define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */
2086 * The macros INT2PTR and NUM2PTR are (despite their names)
2087 * bi-directional: they will convert int/float to or from pointers.
2088 * However the conversion to int/float are named explicitly:
2089 * PTR2IV, PTR2UV, PTR2NV.
2091 * For int conversions we do not need two casts if pointers are
2092 * the same size as IV and UV. Otherwise we need an explicit
2093 * cast (PTRV) to avoid compiler warnings.
2095 * These are mentioned in perlguts
2097 #if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
2099 # define INT2PTR(any,d) (any)(d)
2100 #elif PTRSIZE == LONGSIZE
2101 # define PTRV unsigned long
2102 # define PTR2ul(p) (unsigned long)(p)
2104 # define PTRV unsigned
2108 # define INT2PTR(any,d) (any)(PTRV)(d)
2112 # define PTR2ul(p) INT2PTR(unsigned long,p)
2116 =for apidoc_section Casting
2117 =for apidoc Cyh|type|NUM2PTR|type|int value
2118 You probably want to be using L<C</INT2PTR>> instead.
2123 #define NUM2PTR(any,d) (any)(PTRV)(d)
2124 #define PTR2IV(p) INT2PTR(IV,p)
2125 #define PTR2UV(p) INT2PTR(UV,p)
2126 #define PTR2NV(p) NUM2PTR(NV,p)
2127 #define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */
2129 /* According to strict ANSI C89 one cannot freely cast between
2130 * data pointers and function (code) pointers. There are at least
2131 * two ways around this. One (used below) is to do two casts,
2132 * first the other pointer to an (unsigned) integer, and then
2133 * the integer to the other pointer. The other way would be
2134 * to use unions to "overlay" the pointers. For an example of
2135 * the latter technique, see union dirpu in struct xpvio in sv.h.
2136 * The only feasible use is probably temporarily storing
2137 * function pointers in a data pointer (such as a void pointer). */
2139 #define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */
2140 #define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */
2142 #ifdef USE_LONG_DOUBLE
2143 # if LONG_DOUBLESIZE == DOUBLESIZE
2144 # define LONG_DOUBLE_EQUALS_DOUBLE
2145 # undef USE_LONG_DOUBLE /* Ouch! */
2149 /* The following is all to get LDBL_DIG, in order to pick a nice
2150 default value for printing floating point numbers in Gconvert.
2153 #ifndef HAS_LDBL_DIG
2154 # if LONG_DOUBLESIZE == 10
2155 # define LDBL_DIG 18 /* assume IEEE */
2156 # elif LONG_DOUBLESIZE == 12
2157 # define LDBL_DIG 18 /* gcc? */
2158 # elif LONG_DOUBLESIZE == 16
2159 # define LDBL_DIG 33 /* assume IEEE */
2160 # elif LONG_DOUBLESIZE == DOUBLESIZE
2161 # define LDBL_DIG DBL_DIG /* bummer */
2168 # include <ieeefp.h>
2171 #if defined(__DECC) && defined(__osf__)
2172 /* Also Tru64 cc has broken NaN comparisons. */
2173 # define NAN_COMPARE_BROKEN
2176 # define NAN_COMPARE_BROKEN
2179 #ifdef USE_LONG_DOUBLE
2181 # include <sunmath.h>
2183 # if defined(LDBL_DIG)
2184 # define NV_DIG LDBL_DIG
2185 # ifdef LDBL_MANT_DIG
2186 # define NV_MANT_DIG LDBL_MANT_DIG
2189 # define NV_MIN LDBL_MIN
2192 # define NV_MAX LDBL_MAX
2194 # ifdef LDBL_MIN_EXP
2195 # define NV_MIN_EXP LDBL_MIN_EXP
2197 # ifdef LDBL_MAX_EXP
2198 # define NV_MAX_EXP LDBL_MAX_EXP
2200 # ifdef LDBL_MIN_10_EXP
2201 # define NV_MIN_10_EXP LDBL_MIN_10_EXP
2203 # ifdef LDBL_MAX_10_EXP
2204 # define NV_MAX_10_EXP LDBL_MAX_10_EXP
2206 # ifdef LDBL_EPSILON
2207 # define NV_EPSILON LDBL_EPSILON
2210 # define NV_MAX LDBL_MAX
2211 /* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */
2212 # elif defined(HUGE_VALL)
2213 # define NV_MAX HUGE_VALL
2216 # if defined(HAS_SQRTL)
2217 # define Perl_acos acosl
2218 # define Perl_asin asinl
2219 # define Perl_atan atanl
2220 # define Perl_atan2 atan2l
2221 # define Perl_ceil ceill
2222 # define Perl_cos cosl
2223 # define Perl_cosh coshl
2224 # define Perl_exp expl
2225 /* no Perl_fabs, but there's PERL_ABS */
2226 # define Perl_floor floorl
2227 # define Perl_fmod fmodl
2228 # define Perl_log logl
2229 # define Perl_log10 log10l
2230 # define Perl_pow powl
2231 # define Perl_sin sinl
2232 # define Perl_sinh sinhl
2233 # define Perl_sqrt sqrtl
2234 # define Perl_tan tanl
2235 # define Perl_tanh tanhl
2237 /* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */
2240 # define Perl_modf(x,y) modfl(x,y)
2241 /* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no
2242 prototype in <math.h> */
2243 # ifndef HAS_MODFL_PROTO
2244 EXTERN_C long double modfl(long double, long double *);
2246 # elif (defined(HAS_TRUNCL) || defined(HAS_AINTL)) && defined(HAS_COPYSIGNL)
2247 extern long double Perl_my_modfl(long double x, long double *ip);
2248 # define Perl_modf(x,y) Perl_my_modfl(x,y)
2253 # define Perl_frexp(x,y) frexpl(x,y)
2254 # elif defined(HAS_ILOGBL) && defined(HAS_SCALBNL)
2255 extern long double Perl_my_frexpl(long double x, int *e);
2256 # define Perl_frexp(x,y) Perl_my_frexpl(x,y)
2261 # define Perl_ldexp(x, y) ldexpl(x,y)
2262 # elif defined(HAS_SCALBNL) && FLT_RADIX == 2
2263 # define Perl_ldexp(x,y) scalbnl(x,y)
2267 # if defined(HAS_ISNANL) && !(defined(isnan) && defined(HAS_C99))
2268 # define Perl_isnan(x) isnanl(x)
2269 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2270 # define Perl_isnan(x) isnan(x)
2274 # if defined(HAS_ISINFL) && !(defined(isinf) && defined(HAS_C99))
2275 # define Perl_isinf(x) isinfl(x)
2276 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2277 # define Perl_isinf(x) isinf(x)
2278 # elif defined(LDBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2279 # define Perl_isinf(x) ((x) > LDBL_MAX || (x) < -LDBL_MAX)
2282 # ifndef Perl_isfinite
2283 # define Perl_isfinite(x) Perl_isfinitel(x)
2285 #elif defined(USE_QUADMATH) && defined(I_QUADMATH)
2286 # include <quadmath.h>
2287 # define NV_DIG FLT128_DIG
2288 # define NV_MANT_DIG FLT128_MANT_DIG
2289 # define NV_MIN FLT128_MIN
2290 # define NV_MAX FLT128_MAX
2291 # define NV_MIN_EXP FLT128_MIN_EXP
2292 # define NV_MAX_EXP FLT128_MAX_EXP
2293 # define NV_EPSILON FLT128_EPSILON
2294 # define NV_MIN_10_EXP FLT128_MIN_10_EXP
2295 # define NV_MAX_10_EXP FLT128_MAX_10_EXP
2296 # define Perl_acos acosq
2297 # define Perl_asin asinq
2298 # define Perl_atan atanq
2299 # define Perl_atan2 atan2q
2300 # define Perl_ceil ceilq
2301 # define Perl_cos cosq
2302 # define Perl_cosh coshq
2303 # define Perl_exp expq
2304 /* no Perl_fabs, but there's PERL_ABS */
2305 # define Perl_floor floorq
2306 # define Perl_fmod fmodq
2307 # define Perl_log logq
2308 # define Perl_log10 log10q
2309 # define Perl_signbit signbitq
2310 # define Perl_pow powq
2311 # define Perl_sin sinq
2312 # define Perl_sinh sinhq
2313 # define Perl_sqrt sqrtq
2314 # define Perl_tan tanq
2315 # define Perl_tanh tanhq
2316 # define Perl_modf(x,y) modfq(x,y)
2317 # define Perl_frexp(x,y) frexpq(x,y)
2318 # define Perl_ldexp(x, y) ldexpq(x,y)
2319 # define Perl_isinf(x) isinfq(x)
2320 # define Perl_isnan(x) isnanq(x)
2321 # define Perl_isfinite(x) !(isnanq(x) || isinfq(x))
2322 # define Perl_fp_class(x) ((x) == 0.0Q ? 0 : isinfq(x) ? 3 : isnanq(x) ? 4 : PERL_ABS(x) < FLT128_MIN ? 2 : 1)
2323 # define Perl_fp_class_inf(x) (Perl_fp_class(x) == 3)
2324 # define Perl_fp_class_nan(x) (Perl_fp_class(x) == 4)
2325 # define Perl_fp_class_norm(x) (Perl_fp_class(x) == 1)
2326 # define Perl_fp_class_denorm(x) (Perl_fp_class(x) == 2)
2327 # define Perl_fp_class_zero(x) (Perl_fp_class(x) == 0)
2329 # define NV_DIG DBL_DIG
2330 # define NV_MANT_DIG DBL_MANT_DIG
2331 # define NV_MIN DBL_MIN
2332 # define NV_MAX DBL_MAX
2333 # define NV_MIN_EXP DBL_MIN_EXP
2334 # define NV_MAX_EXP DBL_MAX_EXP
2335 # define NV_MIN_10_EXP DBL_MIN_10_EXP
2336 # define NV_MAX_10_EXP DBL_MAX_10_EXP
2337 # define NV_EPSILON DBL_EPSILON
2338 # define NV_MAX DBL_MAX
2339 # define NV_MIN DBL_MIN
2341 /* These math interfaces are C89. */
2342 # define Perl_acos acos
2343 # define Perl_asin asin
2344 # define Perl_atan atan
2345 # define Perl_atan2 atan2
2346 # define Perl_ceil ceil
2347 # define Perl_cos cos
2348 # define Perl_cosh cosh
2349 # define Perl_exp exp
2350 /* no Perl_fabs, but there's PERL_ABS */
2351 # define Perl_floor floor
2352 # define Perl_fmod fmod
2353 # define Perl_log log
2354 # define Perl_log10 log10
2355 # define Perl_pow pow
2356 # define Perl_sin sin
2357 # define Perl_sinh sinh
2358 # define Perl_sqrt sqrt
2359 # define Perl_tan tan
2360 # define Perl_tanh tanh
2362 # define Perl_modf(x,y) modf(x,y)
2363 # define Perl_frexp(x,y) frexp(x,y)
2364 # define Perl_ldexp(x,y) ldexp(x,y)
2368 # define Perl_isnan(x) isnan(x)
2372 # if defined(HAS_ISINF)
2373 # define Perl_isinf(x) isinf(x)
2374 # elif defined(DBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2375 # define Perl_isinf(x) ((x) > DBL_MAX || (x) < -DBL_MAX)
2378 # ifndef Perl_isfinite
2379 # ifdef HAS_ISFINITE
2380 # define Perl_isfinite(x) isfinite(x)
2381 # elif defined(HAS_FINITE)
2382 # define Perl_isfinite(x) finite(x)
2387 /* fpclassify(): C99. It is supposed to be a macro that switches on
2388 * the sizeof() of its argument, so there's no need for e.g. fpclassifyl().*/
2389 #if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
2391 # if defined(FP_INFINITE) && defined(FP_NAN)
2392 # define Perl_fp_class(x) fpclassify(x)
2393 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2394 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2395 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2396 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2397 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2398 # elif defined(FP_PLUS_INF) && defined(FP_QNAN)
2399 /* Some versions of HP-UX (10.20) have (only) fpclassify() but which is
2400 * actually not the C99 fpclassify, with its own set of return defines. */
2401 # define Perl_fp_class(x) fpclassify(x)
2402 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2403 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2404 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2405 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2406 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2407 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2408 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2409 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2410 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2411 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2413 # undef Perl_fp_class /* Unknown set of defines */
2417 /* fp_classify(): Legacy: VMS, maybe Unicos? The values, however,
2418 * are identical to the C99 fpclassify(). */
2419 #if !defined(Perl_fp_class) && defined(HAS_FP_CLASSIFY)
2422 /* FP_INFINITE and others are here rather than in math.h as C99 stipulates */
2424 /* oh, and the isnormal macro has a typo in it! */
2426 # define isnormal(x) Perl_fp_class_norm(x)
2428 # if defined(FP_INFINITE) && defined(FP_NAN)
2429 # define Perl_fp_class(x) fp_classify(x)
2430 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2431 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2432 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2433 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2434 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2436 # undef Perl_fp_class /* Unknown set of defines */
2440 /* Feel free to check with me for the SGI manpages, SGI testing,
2441 * etcetera, if you want to try getting this to work with IRIX.
2443 * - Allen <allens@cpan.org> */
2445 /* fpclass(): SysV, at least Solaris and some versions of IRIX. */
2446 #if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
2447 /* Solaris and IRIX have fpclass/fpclassl, but they are using
2448 * an enum typedef, not cpp symbols, and Configure doesn't detect that.
2449 * Define some symbols also as cpp symbols so we can detect them. */
2450 # if defined(__sun) || defined(__sgi) /* XXX Configure test instead */
2451 # define FP_PINF FP_PINF
2452 # define FP_QNAN FP_QNAN
2456 # include <ieeefp.h>
2461 # if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
2462 # define Perl_fp_class(x) fpclassl(x)
2464 # define Perl_fp_class(x) fpclass(x)
2466 # if defined(FP_CLASS_PINF) && defined(FP_CLASS_SNAN)
2467 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
2468 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
2469 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
2470 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
2471 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
2472 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
2473 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
2474 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
2475 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
2476 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
2477 # elif defined(FP_PINF) && defined(FP_QNAN)
2478 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2479 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2480 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NINF)
2481 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PINF)
2482 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NNORM)
2483 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PNORM)
2484 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NDENORM)
2485 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PDENORM)
2486 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NZERO)
2487 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PZERO)
2489 # undef Perl_fp_class /* Unknown set of defines */
2493 /* fp_class(): Legacy: at least Tru64, some versions of IRIX. */
2494 #if !defined(Perl_fp_class) && (defined(HAS_FP_CLASS)||defined(HAS_FP_CLASSL))
2496 # if !defined(FP_SNAN) && defined(I_FP_CLASS)
2497 # include <fp_class.h>
2499 # if defined(FP_POS_INF) && defined(FP_QNAN)
2500 # ifdef __sgi /* XXX Configure test instead */
2501 # ifdef USE_LONG_DOUBLE
2502 # define Perl_fp_class(x) fp_class_l(x)
2504 # define Perl_fp_class(x) fp_class_d(x)
2507 # if defined(USE_LONG_DOUBLE) && defined(HAS_FP_CLASSL)
2508 # define Perl_fp_class(x) fp_classl(x)
2510 # define Perl_fp_class(x) fp_class(x)
2513 # if defined(FP_POS_INF) && defined(FP_QNAN)
2514 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2515 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2516 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NEG_INF)
2517 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_POS_INF)
2518 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NEG_NORM)
2519 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_POS_NORM)
2520 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NEG_DENORM)
2521 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_POS_DENORM)
2522 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NEG_ZERO)
2523 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_POS_ZERO)
2525 # undef Perl_fp_class /* Unknown set of defines */
2530 /* class(), _class(): Legacy: AIX. */
2531 #if !defined(Perl_fp_class) && defined(HAS_CLASS)
2533 # if defined(FP_PLUS_NORM) && defined(FP_PLUS_INF)
2535 # define Perl_fp_class(x) class(x)
2537 # define Perl_fp_class(x) _class(x)
2539 # if defined(FP_PLUS_INF) && defined(FP_NANQ)
2540 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
2541 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
2542 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2543 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2544 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2545 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2546 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2547 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2548 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2549 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2551 # undef Perl_fp_class /* Unknown set of defines */
2556 /* Win32: _fpclass(), _isnan(), _finite(). */
2559 # define Perl_isnan(x) _isnan(x)
2561 # ifndef Perl_isfinite
2562 # define Perl_isfinite(x) _finite(x)
2564 # ifndef Perl_fp_class_snan
2565 /* No simple way to #define Perl_fp_class because _fpclass()
2566 * returns a set of bits. */
2567 # define Perl_fp_class_snan(x) (_fpclass(x) & _FPCLASS_SNAN)
2568 # define Perl_fp_class_qnan(x) (_fpclass(x) & _FPCLASS_QNAN)
2569 # define Perl_fp_class_nan(x) (_fpclass(x) & (_FPCLASS_SNAN|_FPCLASS_QNAN))
2570 # define Perl_fp_class_ninf(x) (_fpclass(x) & _FPCLASS_NINF)
2571 # define Perl_fp_class_pinf(x) (_fpclass(x) & _FPCLASS_PINF)
2572 # define Perl_fp_class_inf(x) (_fpclass(x) & (_FPCLASS_NINF|_FPCLASS_PINF))
2573 # define Perl_fp_class_nnorm(x) (_fpclass(x) & _FPCLASS_NN)
2574 # define Perl_fp_class_pnorm(x) (_fpclass(x) & _FPCLASS_PN)
2575 # define Perl_fp_class_norm(x) (_fpclass(x) & (_FPCLASS_NN|_FPCLASS_PN))
2576 # define Perl_fp_class_ndenorm(x) (_fpclass(x) & _FPCLASS_ND)
2577 # define Perl_fp_class_pdenorm(x) (_fpclass(x) & _FPCLASS_PD)
2578 # define Perl_fp_class_denorm(x) (_fpclass(x) & (_FPCLASS_ND|_FPCLASS_PD))
2579 # define Perl_fp_class_nzero(x) (_fpclass(x) & _FPCLASS_NZ)
2580 # define Perl_fp_class_pzero(x) (_fpclass(x) & _FPCLASS_PZ)
2581 # define Perl_fp_class_zero(x) (_fpclass(x) & (_FPCLASS_NZ|_FPCLASS_PZ))
2585 #if !defined(Perl_fp_class_inf) && \
2586 defined(Perl_fp_class_pinf) && defined(Perl_fp_class_ninf)
2587 # define Perl_fp_class_inf(x) \
2588 (Perl_fp_class_pinf(x) || Perl_fp_class_ninf(x))
2591 #if !defined(Perl_fp_class_nan) && \
2592 defined(Perl_fp_class_snan) && defined(Perl_fp_class_qnan)
2593 # define Perl_fp_class_nan(x) \
2594 (Perl_fp_class_snan(x) || Perl_fp_class_qnan(x))
2597 #if !defined(Perl_fp_class_zero) && \
2598 defined(Perl_fp_class_pzero) && defined(Perl_fp_class_nzero)
2599 # define Perl_fp_class_zero(x) \
2600 (Perl_fp_class_pzero(x) || Perl_fp_class_nzero(x))
2603 #if !defined(Perl_fp_class_norm) && \
2604 defined(Perl_fp_class_pnorm) && defined(Perl_fp_class_nnorm)
2605 # define Perl_fp_class_norm(x) \
2606 (Perl_fp_class_pnorm(x) || Perl_fp_class_nnorm(x))
2609 #if !defined(Perl_fp_class_denorm) && \
2610 defined(Perl_fp_class_pdenorm) && defined(Perl_fp_class_ndenorm)
2611 # define Perl_fp_class_denorm(x) \
2612 (Perl_fp_class_pdenorm(x) || Perl_fp_class_ndenorm(x))
2616 # ifdef Perl_fp_class_nan
2617 # define Perl_isnan(x) Perl_fp_class_nan(x)
2618 # elif defined(HAS_UNORDERED)
2619 # define Perl_isnan(x) unordered((x), 0.0)
2621 # define Perl_isnan(x) ((x)!=(x))
2626 # ifdef Perl_fp_class_inf
2627 # define Perl_isinf(x) Perl_fp_class_inf(x)
2631 #ifndef Perl_isfinite
2632 # if defined(HAS_ISFINITE) && !defined(isfinite)
2633 # define Perl_isfinite(x) isfinite((double)(x))
2634 # elif defined(HAS_FINITE)
2635 # define Perl_isfinite(x) finite((double)(x))
2636 # elif defined(Perl_fp_class_finite)
2637 # define Perl_isfinite(x) Perl_fp_class_finite(x)
2639 /* For the infinities the multiplication returns nan,
2640 * for the nan the multiplication also returns nan,
2641 * for everything else (that is, finite) zero should be returned. */
2642 # define Perl_isfinite(x) (((x) * 0) == 0)
2647 # if defined(Perl_isfinite) && defined(Perl_isnan)
2648 # define Perl_isinf(x) !(Perl_isfinite(x)||Perl_isnan(x))
2652 /* We need Perl_isfinitel (ends with ell) (if available) even when
2653 * not USE_LONG_DOUBLE because the printf code (sv_catpvfn_flags)
2655 #if defined(HAS_LONG_DOUBLE) && !defined(Perl_isfinitel)
2656 /* If isfinite() is a macro and looks like we have C99,
2657 * we assume it's the type-aware C99 isfinite(). */
2658 # if defined(HAS_ISFINITE) && defined(isfinite) && defined(HAS_C99)
2659 # define Perl_isfinitel(x) isfinite(x)
2660 # elif defined(HAS_ISFINITEL)
2661 # define Perl_isfinitel(x) isfinitel(x)
2662 # elif defined(HAS_FINITEL)
2663 # define Perl_isfinitel(x) finitel(x)
2664 # elif defined(HAS_INFL) && defined(HAS_NANL)
2665 # define Perl_isfinitel(x) !(isinfl(x)||isnanl(x))
2667 # define Perl_isfinitel(x) ((x) * 0 == 0) /* See Perl_isfinite. */
2671 /* The default is to use Perl's own atof() implementation (in numeric.c).
2672 * Usually that is the one to use but for some platforms (e.g. UNICOS)
2673 * it is however best to use the native implementation of atof.
2674 * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
2675 * Some good tests to try out with either setting are t/base/num.t,
2676 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles
2677 * you may need to be using a different function than atof! */
2679 #ifndef USE_PERL_ATOF
2681 # define USE_PERL_ATOF
2684 # if USE_PERL_ATOF == 0
2685 # undef USE_PERL_ATOF
2689 #ifdef USE_PERL_ATOF
2690 # define Perl_atof(s) Perl_my_atof(s)
2691 # define Perl_atof2(s, n) Perl_my_atof3(aTHX_ (s), &(n), 0)
2693 # define Perl_atof(s) (NV)atof(s)
2694 # define Perl_atof2(s, n) ((n) = atof(s))
2696 #define my_atof2(a,b) my_atof3(a,b,0)
2699 =for apidoc_section $numeric
2700 =for apidoc AmT|NV|Perl_acos|NV x
2701 =for apidoc_item |NV|Perl_asin|NV x
2702 =for apidoc_item |NV|Perl_atan|NV x
2703 =for apidoc_item |NV|Perl_atan2|NV x|NV y
2704 =for apidoc_item |NV|Perl_ceil|NV x
2705 =for apidoc_item |NV|Perl_cos|NV x
2706 =for apidoc_item |NV|Perl_cosh|NV x
2707 =for apidoc_item |NV|Perl_exp|NV x
2708 =for apidoc_item |NV|Perl_floor|NV x
2709 =for apidoc_item |NV|Perl_fmod|NV x|NV y
2710 =for apidoc_item |NV|Perl_frexp|NV x|int *exp
2711 =for apidoc_item |IV|Perl_isfinite|NV x
2712 =for apidoc_item |IV|Perl_isinf|NV x
2713 =for apidoc_item |IV|Perl_isnan|NV x
2714 =for apidoc_item |NV|Perl_ldexp|NV x|int exp
2715 =for apidoc_item |NV|Perl_log|NV x
2716 =for apidoc_item |NV|Perl_log10|NV x
2717 =for apidoc_item |NV|Perl_modf|NV x|NV *iptr
2718 =for apidoc_item |NV|Perl_pow|NV x|NV y
2719 =for apidoc_item |NV|Perl_sin|NV x
2720 =for apidoc_item |NV|Perl_sinh|NV x
2721 =for apidoc_item |NV|Perl_sqrt|NV x
2722 =for apidoc_item |NV|Perl_tan|NV x
2723 =for apidoc_item |NV|Perl_tanh|NV x
2725 These perform the corresponding mathematical operation on the operand(s), using
2726 the libc function designed for the task that has just enough precision for an
2727 NV on this platform. If no such function with sufficient precision exists,
2728 the highest precision one available is used.
2734 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
2735 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
2736 * depending on local options. Until Configure detects this (or at least
2737 * detects whether the "signed" keyword is available) the CHAR ranges
2738 * will not be included. UCHAR functions normally.
2742 #define PERL_UCHAR_MIN ((unsigned char)0)
2743 #define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
2745 #define PERL_USHORT_MIN ((unsigned short)0)
2746 #define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
2748 #define PERL_SHORT_MAX ((short)SHRT_MAX)
2749 #define PERL_SHORT_MIN ((short)SHRT_MIN)
2751 #define PERL_UINT_MAX ((unsigned int)UINT_MAX)
2752 #define PERL_UINT_MIN ((unsigned int)0)
2754 #define PERL_INT_MAX ((int)INT_MAX)
2755 #define PERL_INT_MIN ((int)INT_MIN)
2757 #define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
2758 #define PERL_ULONG_MIN ((unsigned long)0L)
2760 #define PERL_LONG_MAX ((long)LONG_MAX)
2761 #define PERL_LONG_MIN ((long)LONG_MIN)
2764 # define PERL_UQUAD_MAX (~(UV)0)
2765 # define PERL_UQUAD_MIN ((UV)0)
2766 # define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
2767 # define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
2771 =for apidoc_section $integer
2773 =for apidoc AmnU||PERL_INT_MAX
2774 =for apidoc_item ||PERL_INT_MIN
2775 =for apidoc_item ||PERL_LONG_MAX
2776 =for apidoc_item ||PERL_LONG_MIN
2777 =for apidoc_item ||PERL_SHORT_MAX
2778 =for apidoc_item ||PERL_SHORT_MIN
2779 =for apidoc_item ||PERL_UCHAR_MAX
2780 =for apidoc_item ||PERL_UCHAR_MIN
2781 =for apidoc_item ||PERL_UINT_MAX
2782 =for apidoc_item ||PERL_UINT_MIN
2783 =for apidoc_item ||PERL_ULONG_MAX
2784 =for apidoc_item ||PERL_ULONG_MIN
2785 =for apidoc_item ||PERL_USHORT_MAX
2786 =for apidoc_item ||PERL_USHORT_MIN
2787 =for apidoc_item ||PERL_QUAD_MAX
2788 =for apidoc_item ||PERL_QUAD_MIN
2789 =for apidoc_item ||PERL_UQUAD_MAX
2790 =for apidoc_item ||PERL_UQUAD_MIN
2792 These give the largest and smallest number representable in the current
2793 platform in variables of the corresponding types.
2795 For signed types, the smallest representable number is the most negative
2796 number, the one furthest away from zero.
2798 For C99 and later compilers, these correspond to things like C<INT_MAX>, which
2799 are available to the C code. But these constants, furnished by Perl,
2800 allow code compiled on earlier compilers to portably have access to the same
2807 typedef MEM_SIZE STRLEN;
2809 typedef struct op OP;
2810 typedef struct cop COP;
2811 typedef struct unop UNOP;
2812 typedef struct unop_aux UNOP_AUX;
2813 typedef struct binop BINOP;
2814 typedef struct listop LISTOP;
2815 typedef struct logop LOGOP;
2816 typedef struct pmop PMOP;
2817 typedef struct svop SVOP;
2818 typedef struct padop PADOP;
2819 typedef struct pvop PVOP;
2820 typedef struct loop LOOP;
2821 typedef struct methop METHOP;
2824 typedef struct opslab OPSLAB;
2825 typedef struct opslot OPSLOT;
2828 typedef struct block_hooks BHK;
2829 typedef struct custom_op XOP;
2831 typedef struct interpreter PerlInterpreter;
2833 /* SGI's <sys/sema.h> has struct sv */
2835 # define STRUCT_SV perl_sv
2837 # define STRUCT_SV sv
2839 typedef struct STRUCT_SV SV;
2840 typedef struct av AV;
2841 typedef struct hv HV;
2842 typedef struct cv CV;
2843 typedef struct p5rx REGEXP;
2844 typedef struct gp GP;
2845 typedef struct gv GV;
2846 typedef struct io IO;
2847 typedef struct context PERL_CONTEXT;
2848 typedef struct block BLOCK;
2849 typedef struct invlist INVLIST;
2851 typedef struct magic MAGIC;
2852 typedef struct xpv XPV;
2853 typedef struct xpviv XPVIV;
2854 typedef struct xpvuv XPVUV;
2855 typedef struct xpvnv XPVNV;
2856 typedef struct xpvmg XPVMG;
2857 typedef struct xpvlv XPVLV;
2858 typedef struct xpvinvlist XINVLIST;
2859 typedef struct xpvav XPVAV;
2860 typedef struct xpvhv XPVHV;
2861 typedef struct xpvgv XPVGV;
2862 typedef struct xpvcv XPVCV;
2863 typedef struct xpvbm XPVBM;
2864 typedef struct xpvfm XPVFM;
2865 typedef struct xpvio XPVIO;
2866 typedef struct mgvtbl MGVTBL;
2867 typedef union any ANY;
2868 typedef struct ptr_tbl_ent PTR_TBL_ENT_t;
2869 typedef struct ptr_tbl PTR_TBL_t;
2870 typedef struct clone_params CLONE_PARAMS;
2872 /* a pad is currently just an AV; but that might change,
2873 * so hide the type. */
2874 typedef struct padlist PADLIST;
2876 typedef struct padnamelist PADNAMELIST;
2877 typedef struct padname PADNAME;
2879 /* always enable PERL_OP_PARENT */
2880 #if !defined(PERL_OP_PARENT)
2881 # define PERL_OP_PARENT
2884 /* enable PERL_COPY_ON_WRITE by default */
2885 #if !defined(PERL_COPY_ON_WRITE) && !defined(PERL_NO_COW)
2886 # define PERL_COPY_ON_WRITE
2889 #ifdef PERL_COPY_ON_WRITE
2890 # define PERL_ANY_COW
2892 # define PERL_SAWAMPERSAND
2895 #if defined(PERL_DEBUG_READONLY_OPS) && !defined(USE_ITHREADS)
2896 # error PERL_DEBUG_READONLY_OPS only works with ithreads
2900 #include "charclass_invlists.h"
2902 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO)
2903 # if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO)
2904 # define USE_64_BIT_RAWIO /* implicit */
2908 /* Notice the use of HAS_FSEEKO: now we are obligated to always use
2909 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself,
2910 * however, because operating systems like to do that themself. */
2913 # define FSEEKSIZE LSEEKSIZE
2915 # define FSEEKSIZE LONGSIZE
2919 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO)
2920 # if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO)
2921 # define USE_64_BIT_STDIO /* implicit */
2925 #ifdef USE_64_BIT_RAWIO
2928 # define Off_t off64_t
2930 # define LSEEKSIZE 8
2932 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2933 * will trigger defines like the ones below. Some 64-bit environments,
2934 * however, do not. Therefore we have to explicitly mix and match. */
2935 # if defined(USE_OPEN64)
2936 # define open open64
2938 # if defined(USE_LSEEK64)
2939 # define lseek lseek64
2941 # if defined(USE_LLSEEK)
2942 # define lseek llseek
2945 # if defined(USE_STAT64)
2946 # define stat stat64
2948 # if defined(USE_FSTAT64)
2949 # define fstat fstat64
2951 # if defined(USE_LSTAT64)
2952 # define lstat lstat64
2954 # if defined(USE_FLOCK64)
2955 # define flock flock64
2957 # if defined(USE_LOCKF64)
2958 # define lockf lockf64
2960 # if defined(USE_FCNTL64)
2961 # define fcntl fcntl64
2963 # if defined(USE_TRUNCATE64)
2964 # define truncate truncate64
2966 # if defined(USE_FTRUNCATE64)
2967 # define ftruncate ftruncate64
2971 #ifdef USE_64_BIT_STDIO
2972 # ifdef HAS_FPOS64_T
2974 # define Fpos_t fpos64_t
2976 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2977 * will trigger defines like the ones below. Some 64-bit environments,
2978 * however, do not. */
2979 # if defined(USE_FOPEN64)
2980 # define fopen fopen64
2982 # if defined(USE_FSEEK64)
2983 # define fseek fseek64 /* don't do fseeko here, see perlio.c */
2985 # if defined(USE_FTELL64)
2986 # define ftell ftell64 /* don't do ftello here, see perlio.c */
2988 # if defined(USE_FSETPOS64)
2989 # define fsetpos fsetpos64
2991 # if defined(USE_FGETPOS64)
2992 # define fgetpos fgetpos64
2994 # if defined(USE_TMPFILE64)
2995 # define tmpfile tmpfile64
2997 # if defined(USE_FREOPEN64)
2998 # define freopen freopen64
3003 # include "iperlsys.h"
3008 # include "os2ish.h"
3010 # include "dosish.h"
3013 # include "vmsish.h"
3014 #elif defined(PLAN9)
3015 # include "./plan9/plan9ish.h"
3016 #elif defined(__VOS__)
3018 # include "./vos/vosish.h"
3020 # include "vos/vosish.h"
3022 #elif defined(__HAIKU__)
3023 # include "haiku/haikuish.h"
3025 # include "unixish.h"
3029 # include "amigaos.h"
3030 # undef FD_CLOEXEC /* a lie in AmigaOS */
3033 /* NSIG logic from Configure --> */
3036 # define NSIG (_NSIG)
3037 # elif defined(SIGMAX)
3038 # define NSIG (SIGMAX+1)
3039 # elif defined(SIG_MAX)
3040 # define NSIG (SIG_MAX+1)
3041 # elif defined(_SIG_MAX)
3042 # define NSIG (_SIG_MAX+1)
3043 # elif defined(MAXSIG)
3044 # define NSIG (MAXSIG+1)
3045 # elif defined(MAX_SIG)
3046 # define NSIG (MAX_SIG+1)
3047 # elif defined(SIGARRAYSIZE)
3048 # define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
3049 # elif defined(_sys_nsig)
3050 # define NSIG (_sys_nsig) /* Solaris 2.5 */
3052 /* Default to some arbitrary number that's big enough to get most
3053 * of the common signals. */
3057 /* <-- NSIG logic from Configure */
3059 #ifndef NO_ENVIRON_ARRAY
3060 # define USE_ENVIRON_ARRAY
3064 /* On some platforms it would be safe to use a read/write mutex with many
3065 * readers possible at the same time. On other platforms, notably IBM ones,
3066 * subsequent getenv calls destroy earlier ones. Those platforms would not
3067 * be able to handle simultaneous getenv calls */
3068 # define ENV_LOCK MUTEX_LOCK(&PL_env_mutex)
3069 # define ENV_UNLOCK MUTEX_UNLOCK(&PL_env_mutex)
3070 # define ENV_INIT MUTEX_INIT(&PL_env_mutex);
3071 # define ENV_TERM MUTEX_DESTROY(&PL_env_mutex);
3073 # define ENV_LOCK NOOP;
3074 # define ENV_UNLOCK NOOP;
3075 # define ENV_INIT NOOP;
3076 # define ENV_TERM NOOP;
3079 /* Some critical sections need to lock both the locale and the environment.
3080 * XXX khw intends to change this to lock both mutexes, but that brings up
3081 * issues of potential deadlock, so should be done at the beginning of a
3082 * development cycle. So for now, it just locks the environment. Note that
3083 * many modern platforms are locale-thread-safe anyway, so locking the locale
3084 * mutex is a no-op anyway */
3085 #define ENV_LOCALE_LOCK ENV_LOCK
3086 #define ENV_LOCALE_UNLOCK ENV_UNLOCK
3088 /* And some critical sections care only that no one else is writing either the
3089 * locale nor the environment. XXX Again this is for the future. This can be
3090 * simulated with using COND_WAIT in thread.h */
3091 #define ENV_LOCALE_READ_LOCK ENV_LOCALE_LOCK
3092 #define ENV_LOCALE_READ_UNLOCK ENV_LOCALE_UNLOCK
3094 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
3095 /* having sigaction(2) means that the OS supports both 1-arg and 3-arg
3096 * signal handlers. But the perl core itself only fully supports 1-arg
3097 * handlers, so don't enable for now.
3098 * NB: POSIX::sigaction() supports both.
3100 * # define PERL_USE_3ARG_SIGHANDLER
3105 * This is an alias for the OS's siginfo_t, except that where the OS
3106 * doesn't support it, declare a dummy version instead. This allows us to
3107 * have signal handler functions which always have a Siginfo_t parameter
3108 * regardless of platform, (and which will just be passed a NULL value
3109 * where the OS doesn't support HAS_SIGACTION).
3112 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
3113 typedef siginfo_t Siginfo_t;
3115 #ifdef si_signo /* minix */
3125 * initialise to avoid floating-point exceptions from overflow, etc
3127 #ifndef PERL_FPU_INIT
3128 # ifdef HAS_FPSETMASK
3129 # if HAS_FLOATINGPOINT_H
3130 # include <floatingpoint.h>
3132 /* Some operating systems have this as a macro, which in turn expands to a comma
3133 expression, and the last sub-expression is something that gets calculated,
3134 and then they have the gall to warn that a value computed is not used. Hence
3136 # define PERL_FPU_INIT (void)fpsetmask(0)
3137 # elif defined(SIGFPE) && defined(SIG_IGN) && !defined(PERL_MICRO)
3138 # define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN)
3139 # define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
3140 # define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
3142 # define PERL_FPU_INIT
3145 #ifndef PERL_FPU_PRE_EXEC
3146 # define PERL_FPU_PRE_EXEC {
3147 # define PERL_FPU_POST_EXEC }
3150 /* In Tru64 the cc -ieee enables the IEEE math but disables traps.
3151 * We need to reenable the "invalid" trap because otherwise generation
3152 * of NaN values leaves the IEEE fp flags in bad state, leaving any further
3153 * fp ops behaving strangely (Inf + 1 resulting in zero, for example). */
3155 # include <machine/fpu.h>
3156 # define PERL_SYS_FPU_INIT \
3158 ieee_set_fp_control(IEEE_TRAP_ENABLE_INV); \
3159 signal(SIGFPE, SIG_IGN); \
3162 /* In IRIX the default for Flush to Zero bit is true,
3163 * which means that results going below the minimum of normal
3164 * floating points go to zero, instead of going denormal/subnormal.
3165 * This is unlike almost any other system running Perl, so let's clear it.
3166 * [perl #123767] IRIX64 blead (ddce084a) opbasic/arith.t failure, originally
3167 * [perl #120426] small numbers shouldn't round to zero if they have extra floating digits
3169 * XXX The flush-to-zero behaviour should be a Configure scan.
3170 * To change the behaviour usually requires some system-specific
3171 * incantation, though, like the below. */
3173 # include <sys/fpu.h>
3174 # define PERL_SYS_FPU_INIT \
3176 union fpc_csr csr; \
3177 csr.fc_word = get_fpc_csr(); \
3178 csr.fc_struct.flush = 0; \
3179 set_fpc_csr(csr.fc_word); \
3183 #ifndef PERL_SYS_FPU_INIT
3184 # define PERL_SYS_FPU_INIT NOOP
3187 #ifndef PERL_SYS_INIT3_BODY
3188 # define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp)
3192 =for apidoc_section $embedding
3194 =for apidoc Am|void|PERL_SYS_INIT|int *argc|char*** argv
3195 Provides system-specific tune up of the C runtime environment necessary to
3196 run Perl interpreters. This should be called only once, before creating
3197 any Perl interpreters.
3199 =for apidoc Am|void|PERL_SYS_INIT3|int *argc|char*** argv|char*** env
3200 Provides system-specific tune up of the C runtime environment necessary to
3201 run Perl interpreters. This should be called only once, before creating
3202 any Perl interpreters.
3204 =for apidoc Am|void|PERL_SYS_TERM|
3205 Provides system-specific clean up of the C runtime environment after
3206 running Perl interpreters. This should be called only once, after
3207 freeing any remaining Perl interpreters.
3212 #define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv)
3213 #define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env)
3214 #define PERL_SYS_TERM() Perl_sys_term()
3216 #ifndef PERL_WRITE_MSG_TO_CONSOLE
3217 # define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len)
3222 # ifdef _POSIX_PATH_MAX
3223 # if PATH_MAX > _POSIX_PATH_MAX
3224 /* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX
3225 * included the null byte or not. Later amendments of POSIX,
3226 * XPG4, the Austin Group, and the Single UNIX Specification
3227 * all explicitly include the null byte in the PATH_MAX.
3228 * Ditto for _POSIX_PATH_MAX. */
3229 # define MAXPATHLEN PATH_MAX
3231 # define MAXPATHLEN _POSIX_PATH_MAX
3234 # define MAXPATHLEN (PATH_MAX+1)
3237 # define MAXPATHLEN 1024 /* Err on the large side. */
3241 /* clang Thread Safety Analysis/Annotations/Attributes
3242 * http://clang.llvm.org/docs/ThreadSafetyAnalysis.html
3244 * Available since clang 3.6-ish (appeared in 3.4, but shaky still in 3.5).
3245 * Apple XCode hijacks __clang_major__ and __clang_minor__
3246 * (6.1 means really clang 3.6), so needs extra hijinks
3247 * (could probably also test the contents of __apple_build_version__).
3249 #if defined(USE_ITHREADS) && defined(I_PTHREAD) && \
3250 defined(__clang__) && \
3252 ((!defined(__apple_build_version__) && \
3253 ((__clang_major__ == 3 && __clang_minor__ >= 6) || \
3254 (__clang_major__ >= 4))) || \
3255 (defined(__apple_build_version__) && \
3256 ((__clang_major__ == 6 && __clang_minor__ >= 1) || \
3257 (__clang_major__ >= 7))))
3258 # define PERL_TSA__(x) __attribute__((x))
3259 # define PERL_TSA_ACTIVE
3261 # define PERL_TSA__(x) /* No TSA, make TSA attributes no-ops. */
3262 # undef PERL_TSA_ACTIVE
3265 /* PERL_TSA_CAPABILITY() is used to annotate typedefs.
3266 * typedef old_type PERL_TSA_CAPABILITY("mutex") new_type;
3268 #define PERL_TSA_CAPABILITY(x) \
3269 PERL_TSA__(capability(x))
3271 /* In the below examples the mutex must be lexically visible, usually
3272 * either as global variables, or as function arguments. */
3274 /* PERL_TSA_GUARDED_BY() is used to annotate global variables.
3276 * Foo foo PERL_TSA_GUARDED_BY(mutex);
3278 #define PERL_TSA_GUARDED_BY(x) \
3279 PERL_TSA__(guarded_by(x))
3281 /* PERL_TSA_PT_GUARDED_BY() is used to annotate global pointers.
3282 * The data _behind_ the pointer is guarded.
3284 * Foo* ptr PERL_TSA_PT_GUARDED_BY(mutex);
3286 #define PERL_TSA_PT_GUARDED_BY(x) \
3287 PERL_TSA__(pt_guarded_by(x))
3289 /* PERL_TSA_REQUIRES() is used to annotate functions.
3290 * The caller MUST hold the resource when calling the function.
3292 * void Foo() PERL_TSA_REQUIRES(mutex);
3294 #define PERL_TSA_REQUIRES(x) \
3295 PERL_TSA__(requires_capability(x))
3297 /* PERL_TSA_EXCLUDES() is used to annotate functions.
3298 * The caller MUST NOT hold resource when calling the function.
3300 * EXCLUDES should be used when the function first acquires
3301 * the resource and then releases it. Use to avoid deadlock.
3303 * void Foo() PERL_TSA_EXCLUDES(mutex);
3305 #define PERL_TSA_EXCLUDES(x) \
3306 PERL_TSA__(locks_excluded(x))
3308 /* PERL_TSA_ACQUIRE() is used to annotate functions.
3309 * The caller MUST NOT hold the resource when calling the function,
3310 * and the function will acquire the resource.
3312 * void Foo() PERL_TSA_ACQUIRE(mutex);
3314 #define PERL_TSA_ACQUIRE(x) \
3315 PERL_TSA__(acquire_capability(x))
3317 /* PERL_TSA_RELEASE() is used to annotate functions.
3318 * The caller MUST hold the resource when calling the function,
3319 * and the function will release the resource.
3321 * void Foo() PERL_TSA_RELEASE(mutex);
3323 #define PERL_TSA_RELEASE(x) \
3324 PERL_TSA__(release_capability(x))
3326 /* PERL_TSA_NO_TSA is used to annotate functions.
3327 * Used when being intentionally unsafe, or when the code is too
3328 * complicated for the analysis. Use sparingly.
3330 * void Foo() PERL_TSA_NO_TSA;
3332 #define PERL_TSA_NO_TSA \
3333 PERL_TSA__(no_thread_safety_analysis)
3335 /* There are more annotations/attributes available, see the clang
3336 * documentation for details. */
3338 #if defined(USE_ITHREADS)
3340 # include <nw5thread.h>
3341 # elif defined(WIN32)
3342 # include <win32thread.h>
3344 # include "os2thread.h"
3345 # elif defined(I_MACH_CTHREADS)
3346 # include <mach/cthreads.h>
3347 typedef cthread_t perl_os_thread;
3348 typedef mutex_t perl_mutex;
3349 typedef condition_t perl_cond;
3350 typedef void * perl_key;
3351 # elif defined(I_PTHREAD) /* Posix threads */
3352 # include <pthread.h>
3353 typedef pthread_t perl_os_thread;
3354 typedef pthread_mutex_t PERL_TSA_CAPABILITY("mutex") perl_mutex;
3355 typedef pthread_cond_t perl_cond;
3356 typedef pthread_key_t perl_key;
3358 #endif /* USE_ITHREADS */
3360 #ifdef PERL_TSA_ACTIVE
3361 /* Since most pthread mutex interfaces have not been annotated, we
3362 * need to have these wrappers. The NO_TSA annotation is quite ugly
3363 * but it cannot be avoided in plain C, unlike in C++, where one could
3364 * e.g. use ACQUIRE() with no arg on a mutex lock method.
3366 * The bodies of these wrappers are in util.c
3368 * TODO: however, some platforms are starting to get these clang
3369 * thread safety annotations for pthreads, for example FreeBSD.
3370 * Do we need a way to a bypass these wrappers? */
3371 EXTERN_C int perl_tsa_mutex_lock(perl_mutex* mutex)
3372 PERL_TSA_ACQUIRE(*mutex)
3374 EXTERN_C int perl_tsa_mutex_unlock(perl_mutex* mutex)
3375 PERL_TSA_RELEASE(*mutex)
3384 # include "netware.h"
3387 #define STATUS_UNIX PL_statusvalue
3389 # define STATUS_NATIVE PL_statusvalue_vms
3391 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise
3392 * its contents can not be trusted. Unfortunately, Perl seems to check
3393 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should
3396 # include <stsdef.h>
3398 /* Presume this because if VMS changes it, it will require a new
3399 * set of APIs for waiting on children for binary compatibility.
3401 # define child_offset_bits (8)
3402 # ifndef C_FAC_POSIX
3403 # define C_FAC_POSIX 0x35A000
3406 /* STATUS_EXIT - validates and returns a NATIVE exit status code for the
3407 * platform from the existing UNIX or Native status values.
3410 # define STATUS_EXIT \
3411 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \
3412 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0))
3415 /* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child
3416 * exit code and shifts the UNIX value over the correct number of bits to
3417 * be a child status. Usually the number of bits is 8, but that could be
3418 * platform dependent. The NATIVE status code is presumed to have either
3419 * from a child process.
3422 /* This is complicated. The child processes return a true native VMS
3423 status which must be saved. But there is an assumption in Perl that
3424 the UNIX child status has some relationship to errno values, so
3425 Perl tries to translate it to text in some of the tests.
3426 In order to get the string translation correct, for the error, errno
3427 must be EVMSERR, but that generates a different text message
3428 than what the test programs are expecting. So an errno value must
3429 be derived from the native status value when an error occurs.
3430 That will hide the true native status message. With this version of
3431 perl, the true native child status can always be retrieved so that
3432 is not a problem. But in this case, Pl_statusvalue and errno may
3433 have different values in them.
3436 # define STATUS_NATIVE_CHILD_SET(n) \
3438 I32 evalue = (I32)n; \
3439 if (evalue == EVMSERR) { \
3440 PL_statusvalue_vms = vaxc$errno; \
3441 PL_statusvalue = evalue; \
3443 PL_statusvalue_vms = evalue; \
3444 if (evalue == -1) { \
3445 PL_statusvalue = -1; \
3446 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \
3448 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \
3449 set_vaxc_errno(evalue); \
3450 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \
3451 set_errno(EVMSERR); \
3452 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \
3453 PL_statusvalue = PL_statusvalue << child_offset_bits; \
3457 # ifdef VMSISH_STATUS
3458 # define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX)
3460 # define STATUS_CURRENT STATUS_UNIX
3463 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update
3464 * the NATIVE status to an equivalent value. Can not be used to translate
3465 * exit code values as exit code values are not guaranteed to have any
3466 * relationship at all to errno values.
3467 * This is used when Perl is forcing errno to have a specific value.
3469 # define STATUS_UNIX_SET(n) \
3471 I32 evalue = (I32)n; \
3472 PL_statusvalue = evalue; \
3473 if (PL_statusvalue != -1) { \
3474 if (PL_statusvalue != EVMSERR) { \
3475 PL_statusvalue &= 0xFFFF; \
3476 if (MY_POSIX_EXIT) \
3477 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\
3478 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \
3481 PL_statusvalue_vms = vaxc$errno; \
3484 else PL_statusvalue_vms = SS$_ABORT; \
3485 set_vaxc_errno(PL_statusvalue_vms); \
3488 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets
3489 * the NATIVE error status based on it.
3491 * When in the default mode to comply with the Perl VMS documentation,
3492 * 0 is a success and any other code sets the NATIVE status to a failure
3493 * code of SS$_ABORT.
3495 * In the new POSIX EXIT mode, native status will be set so that the
3496 * actual exit code will can be retrieved by the calling program or
3499 * If the exit code is not clearly a UNIX parent or child exit status,
3500 * it will be passed through as a VMS status.
3503 # define STATUS_UNIX_EXIT_SET(n) \
3505 I32 evalue = (I32)n; \
3506 PL_statusvalue = evalue; \
3507 if (MY_POSIX_EXIT) { \
3508 if (evalue <= 0xFF00) { \
3509 if (evalue > 0xFF) \
3510 evalue = (evalue >> child_offset_bits) & 0xFF; \
3511 PL_statusvalue_vms = \
3512 (C_FAC_POSIX | (evalue << 3 ) | \
3513 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \
3514 } else /* forgive them Perl, for they have sinned */ \
3515 PL_statusvalue_vms = evalue; \
3518 PL_statusvalue_vms = SS$_NORMAL; \
3519 else if (evalue <= 0xFF00) \
3520 PL_statusvalue_vms = SS$_ABORT; \
3521 else { /* forgive them Perl, for they have sinned */ \
3522 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \
3523 else PL_statusvalue_vms = vaxc$errno; \
3524 /* And obviously used a VMS status value instead of UNIX */ \
3525 PL_statusvalue = EVMSERR; \
3527 set_vaxc_errno(PL_statusvalue_vms); \
3532 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code
3533 * and sets the NATIVE error status based on it. This special case
3534 * is needed to maintain compatibility with past VMS behavior.
3536 * In the default mode on VMS, this number is passed through as
3537 * both the NATIVE and UNIX status. Which makes it different
3538 * that the STATUS_UNIX_EXIT_SET.
3540 * In the new POSIX EXIT mode, native status will be set so that the
3541 * actual exit code will can be retrieved by the calling program or
3544 * A POSIX exit code is from 0 to 255. If the exit code is higher
3545 * than this, it needs to be assumed that it is a VMS exit code and
3549 # define STATUS_EXIT_SET(n) \
3551 I32 evalue = (I32)n; \
3552 PL_statusvalue = evalue; \
3553 if (MY_POSIX_EXIT) \
3554 if (evalue > 255) PL_statusvalue_vms = evalue; else { \
3555 PL_statusvalue_vms = \
3556 (C_FAC_POSIX | (evalue << 3 ) | \
3557 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \
3559 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \
3560 set_vaxc_errno(PL_statusvalue_vms); \
3564 /* This macro forces a success status */
3565 # define STATUS_ALL_SUCCESS \
3566 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL)
3568 /* This macro forces a failure status */
3569 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, \
3570 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \
3571 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT)
3573 #elif defined(__amigaos4__)
3574 /* A somewhat experimental attempt to simulate posix return code values */
3575 # define STATUS_NATIVE PL_statusvalue_posix
3576 # define STATUS_NATIVE_CHILD_SET(n) \
3578 PL_statusvalue_posix = (n); \
3579 if (PL_statusvalue_posix < 0) { \
3580 PL_statusvalue = -1; \
3583 PL_statusvalue = n << 8; \
3586 # define STATUS_UNIX_SET(n) \
3588 PL_statusvalue = (n); \
3589 if (PL_statusvalue != -1) \
3590 PL_statusvalue &= 0xFFFF; \
3592 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3593 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3594 # define STATUS_CURRENT STATUS_UNIX
3595 # define STATUS_EXIT STATUS_UNIX
3596 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3597 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3600 # define STATUS_NATIVE PL_statusvalue_posix
3601 # if defined(WCOREDUMP)
3602 # define STATUS_NATIVE_CHILD_SET(n) \
3604 PL_statusvalue_posix = (n); \
3605 if (PL_statusvalue_posix == -1) \
3606 PL_statusvalue = -1; \
3609 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3610 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \
3611 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \
3614 # elif defined(WIFEXITED)
3615 # define STATUS_NATIVE_CHILD_SET(n) \
3617 PL_statusvalue_posix = (n); \
3618 if (PL_statusvalue_posix == -1) \
3619 PL_statusvalue = -1; \
3622 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3623 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \
3627 # define STATUS_NATIVE_CHILD_SET(n) \
3629 PL_statusvalue_posix = (n); \
3630 if (PL_statusvalue_posix == -1) \
3631 PL_statusvalue = -1; \
3634 PL_statusvalue_posix & 0xFFFF; \
3638 # define STATUS_UNIX_SET(n) \
3640 PL_statusvalue = (n); \
3641 if (PL_statusvalue != -1) \
3642 PL_statusvalue &= 0xFFFF; \
3644 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3645 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3646 # define STATUS_CURRENT STATUS_UNIX
3647 # define STATUS_EXIT STATUS_UNIX
3648 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3649 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3652 /* flags in PL_exit_flags for nature of exit() */
3653 #define PERL_EXIT_EXPECTED 0x01
3654 #define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */
3655 #define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */
3656 #define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */
3659 /* format to use for version numbers in file/directory names */
3660 /* XXX move to Configure? */
3661 /* This was only ever used for the current version, and that can be done at
3662 compile time, as PERL_FS_VERSION, so should we just delete it? */
3663 # ifndef PERL_FS_VER_FMT
3664 # define PERL_FS_VER_FMT "%d.%d.%d"
3668 #ifndef PERL_FS_VERSION
3669 # define PERL_FS_VERSION PERL_VERSION_STRING
3672 /* This defines a way to flush all output buffers. This may be a
3673 * performance issue, so we allow people to disable it. Also, if
3674 * we are using stdio, there are broken implementations of fflush(NULL)
3675 * out there, Solaris being the most prominent.
3677 #ifndef PERL_FLUSHALL_FOR_CHILD
3678 # if defined(USE_PERLIO) || defined(FFLUSH_NULL)
3679 # define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL)
3680 # elif defined(FFLUSH_ALL)
3681 # define PERL_FLUSHALL_FOR_CHILD my_fflush_all()
3683 # define PERL_FLUSHALL_FOR_CHILD NOOP
3687 #ifndef PERL_WAIT_FOR_CHILDREN
3688 # define PERL_WAIT_FOR_CHILDREN NOOP
3691 /* the traditional thread-unsafe notion of "current interpreter". */
3692 #ifndef PERL_SET_INTERP
3693 # define PERL_SET_INTERP(i) (PL_curinterp = (PerlInterpreter*)(i))
3696 #ifndef PERL_GET_INTERP
3697 # define PERL_GET_INTERP (PL_curinterp)
3700 #if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_GET_THX)
3701 # ifdef MULTIPLICITY
3702 # define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT)
3704 # define PERL_SET_THX(t) PERL_SET_CONTEXT(t)
3708 This replaces the previous %_ "hack" by the "%p" hacks.
3709 All that is required is that the perl source does not
3710 use "%-p" or "%-<number>p" or "%<number>p" formats.
3711 These formats will still work in perl code.
3712 See comments in sv.c for further details.
3714 Robin Barker 2005-07-14
3716 No longer use %1p for VDf = %vd. RMB 2007-10-19
3720 # define SVf_(n) "-" STRINGIFY(n) "p"
3728 # define SVf32 SVf_(32)
3732 # define SVf256 SVf_(256)
3735 #define SVfARG(p) ((void*)(p))
3741 /* Not ideal, but we cannot easily include a number in an already-numeric
3742 * format sequence. */
3744 # define HEKf256 "3p"
3747 #define HEKfARG(p) ((void*)(p))
3749 /* Documented in perlguts
3751 * %4p is a custom format
3754 # define UTF8f "d%" UVuf "%4p"
3756 #define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p)
3759 #define PNfARG(pn) (int)1, (UV)PadnameLEN(pn), (void *)PadnamePV(pn)
3762 /* not used; but needed for backward compatibility with XS code? - RMB */
3768 #if !defined(DEBUGGING) && !defined(NDEBUG)
3773 /* For functions that are marked as __attribute__noreturn__, it's not
3774 appropriate to call return. In either case, include the lint directive.
3776 #ifdef HASATTRIBUTE_NORETURN
3777 # define NORETURN_FUNCTION_END NOT_REACHED;
3779 # define NORETURN_FUNCTION_END NOT_REACHED; return 0
3782 #ifdef HAS_BUILTIN_EXPECT
3783 # define EXPECT(expr,val) __builtin_expect(expr,val)
3785 # define EXPECT(expr,val) (expr)
3789 =for apidoc_section $directives
3791 =for apidoc Am||LIKELY|bool expr
3793 Returns the input unchanged, but at the same time it gives a branch prediction
3794 hint to the compiler that this condition is likely to be true.
3796 =for apidoc Am||UNLIKELY|bool expr
3798 Returns the input unchanged, but at the same time it gives a branch prediction
3799 hint to the compiler that this condition is likely to be false.
3803 #define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
3804 #define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
3806 #ifdef HAS_BUILTIN_CHOOSE_EXPR
3810 /* STATIC_ASSERT_DECL/STATIC_ASSERT_STMT are like assert(), but for compile
3811 time invariants. That is, their argument must be a constant expression that
3812 can be verified by the compiler. This expression can contain anything that's
3813 known to the compiler, e.g. #define constants, enums, or sizeof (...). If
3814 the expression evaluates to 0, compilation fails.
3815 Because they generate no runtime code (i.e. their use is "free"), they're
3816 always active, even under non-DEBUGGING builds.
3817 STATIC_ASSERT_DECL expands to a declaration and is suitable for use at
3818 file scope (outside of any function).
3819 STATIC_ASSERT_STMT expands to a statement and is suitable for use inside a
3822 #if (! defined(__IBMC__) || __IBMC__ >= 1210) \
3823 && (( defined(static_assert) && ( defined(_ISOC11_SOURCE) \
3824 || (__STDC_VERSION__ - 0) >= 201101L)) \
3825 || (defined(__cplusplus) && __cplusplus >= 201103L))
3826 /* XXX static_assert is a macro defined in <assert.h> in C11 or a compiler
3827 builtin in C++11. But IBM XL C V11 does not support _Static_assert, no
3828 matter what <assert.h> says.
3830 # define STATIC_ASSERT_DECL(COND) static_assert(COND, #COND)
3832 /* We use a bit-field instead of an array because gcc accepts
3833 'typedef char x[n]' where n is not a compile-time constant.
3834 We want to enforce constantness.
3836 # define STATIC_ASSERT_2(COND, SUFFIX) \
3838 unsigned int _static_assertion_failed_##SUFFIX : (COND) ? 1 : -1; \
3839 } _static_assertion_failed_##SUFFIX PERL_UNUSED_DECL
3840 # define STATIC_ASSERT_1(COND, SUFFIX) STATIC_ASSERT_2(COND, SUFFIX)
3841 # define STATIC_ASSERT_DECL(COND) STATIC_ASSERT_1(COND, __LINE__)
3843 /* We need this wrapper even in C11 because 'case X: static_assert(...);' is an
3844 error (static_assert is a declaration, and only statements can have labels).
3846 #define STATIC_ASSERT_STMT(COND) STMT_START { STATIC_ASSERT_DECL(COND); } STMT_END
3848 #ifndef __has_builtin
3849 # define __has_builtin(x) 0 /* not a clang style compiler */
3853 =for apidoc Am||ASSUME|bool expr
3854 C<ASSUME> is like C<assert()>, but it has a benefit in a release build. It is a
3855 hint to a compiler about a statement of fact in a function call free
3856 expression, which allows the compiler to generate better machine code. In a
3857 debug build, C<ASSUME(x)> is a synonym for C<assert(x)>. C<ASSUME(0)> means the
3858 control path is unreachable. In a for loop, C<ASSUME> can be used to hint that
3859 a loop will run at least X times. C<ASSUME> is based off MSVC's C<__assume>
3860 intrinsic function, see its documents for more details.
3866 # define ASSUME(x) assert(x)
3867 # if __has_builtin(__builtin_unreachable)
3868 # define HAS_BUILTIN_UNREACHABLE
3869 # elif (defined(__GNUC__) && ( __GNUC__ > 4 \
3870 || __GNUC__ == 4 && __GNUC_MINOR__ >= 5))
3871 # define HAS_BUILTIN_UNREACHABLE
3875 #if defined(__sun) || (defined(__hpux) && !defined(__GNUC__))
3877 # define ASSUME(x) /* ASSUME() generates warnings on Solaris */
3879 # define NOT_REACHED
3880 #elif defined(HAS_BUILTIN_UNREACHABLE)
3882 # define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable())
3884 # define NOT_REACHED \
3886 ASSUME(!"UNREACHABLE"); __builtin_unreachable(); \
3889 # if defined(_MSC_VER)
3890 # define ASSUME(x) __assume(x)
3891 # elif defined(__ARMCC_VERSION) /* untested */
3892 # define ASSUME(x) __promise(x)
3894 /* a random compiler might define assert to its own special optimization
3895 * token so pass it through to C lib as a last resort */
3896 # define ASSUME(x) assert(x)
3898 # define NOT_REACHED ASSUME(!"UNREACHABLE")
3900 #undef HAS_BUILTIN_UNREACHABLE
3902 /* Some unistd.h's give a prototype for pause() even though
3903 HAS_PAUSE ends up undefined. This causes the #define
3904 below to be rejected by the compiler. Sigh.
3909 #define Pause() sleep((32767<<16)+32767)
3913 # ifdef IOCPARM_MASK
3914 /* on BSDish systems we're safe */
3915 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
3916 # elif defined(_IOC_SIZE) && defined(__GLIBC__)
3917 /* on Linux systems we're safe; except when we're not [perl #38223] */
3918 # define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x))
3920 /* otherwise guess at what's safe */
3921 # define IOCPARM_LEN(x) 256
3925 #if defined(__CYGWIN__)
3927 * This symbol, if defined, indicates that the program should
3928 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
3929 * that a file is in "binary" mode -- that is, that no translation
3930 * of bytes occurs on read or write operations.
3932 # define USEMYBINMODE /**/
3933 # include <io.h> /* for setmode() prototype */
3934 # define my_binmode(fp, iotype, mode) \
3935 cBOOL(PerlLIO_setmode(fileno(fp), mode) != -1)
3939 void init_os_extras(void);
3942 #ifdef UNION_ANY_DEFINITION
3943 UNION_ANY_DEFINITION;
3961 void (*any_dptr) (void*);
3962 void (*any_dxptr) (pTHX_ void*);
3966 typedef I32 (*filter_t) (pTHX_ int, SV *, int);
3968 #define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
3969 #define FILTER_DATA(idx) \
3970 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL)
3971 #define FILTER_ISREADER(idx) \
3972 (PL_parser && PL_parser->rsfp_filters \
3973 && idx >= AvFILLp(PL_parser->rsfp_filters))
3974 #define PERL_FILTER_EXISTS(i) \
3975 (PL_parser && PL_parser->rsfp_filters \
3976 && (Size_t) (i) < av_count(PL_parser->rsfp_filters))
3978 #if defined(_AIX) && !defined(_AIX43)
3979 #if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE)
3980 /* We cannot include <crypt.h> to get the struct crypt_data
3981 * because of setkey prototype problems when threading */
3982 typedef struct crypt_data { /* straight from /usr/include/crypt.h */
3983 /* From OSF, Not needed in AIX
3991 #endif /* threading */
3994 #ifndef PERL_CALLCONV
3996 # define PERL_CALLCONV EXTERN_C
3998 # define PERL_CALLCONV
4001 #ifndef PERL_CALLCONV_NO_RET
4002 # define PERL_CALLCONV_NO_RET PERL_CALLCONV
4005 /* PERL_STATIC_NO_RET is supposed to be equivalent to STATIC on builds that
4006 dont have a noreturn as a declaration specifier
4008 #ifndef PERL_STATIC_NO_RET
4009 # define PERL_STATIC_NO_RET STATIC
4012 /* PERL_STATIC_INLINE_NO_RET is supposed to be equivalent to PERL_STATIC_INLINE
4013 * on builds that dont have a noreturn as a declaration specifier
4015 #ifndef PERL_STATIC_INLINE_NO_RET
4016 # define PERL_STATIC_INLINE_NO_RET PERL_STATIC_INLINE
4019 #ifndef PERL_STATIC_FORCE_INLINE
4020 # define PERL_STATIC_FORCE_INLINE PERL_STATIC_INLINE
4023 #ifndef PERL_STATIC_FORCE_INLINE_NO_RET
4024 # define PERL_STATIC_FORCE_INLINE_NO_RET PERL_STATIC_INLINE
4028 # include "iperlsys.h"
4031 #ifdef __LIBCATAMOUNT__
4032 #undef HAS_PASSWD /* unixish.h but not unixish enough. */
4034 #define FAKE_BIT_BUCKET
4037 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0.
4038 * Note that the USE_HASH_SEED and similar defines are *NOT* defined by
4039 * Configure, despite their names being similar to other defines like
4040 * USE_ITHREADS. Configure in fact knows nothing about the randomised
4041 * hashes. Therefore to enable/disable the hash randomisation defines
4042 * use the Configure -Accflags=... instead. */
4043 #if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED)
4044 # define USE_HASH_SEED
4050 /* macros to define bit-fields in structs. */
4051 #ifndef PERL_BITFIELD8
4052 # define PERL_BITFIELD8 U8
4054 #ifndef PERL_BITFIELD16
4055 # define PERL_BITFIELD16 U16
4057 #ifndef PERL_BITFIELD32
4058 # define PERL_BITFIELD32 U32
4068 #include "opnames.h"
4075 #include "warnings.h"
4078 /* these would be in doio.h if there was such a file */
4079 #define my_stat() my_stat_flags(SV_GMAGIC)
4080 #define my_lstat() my_lstat_flags(SV_GMAGIC)
4082 /* defined in sv.c, but also used in [ach]v.c */
4085 #undef _XPVCV_COMMON
4089 typedef struct magic_state MGS; /* struct magic_state defined in mg.c */
4091 #if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C) \
4092 || defined(PERL_EXT_RE_BUILD)
4094 /* These have to be predeclared, as they are used in proto.h which is #included
4095 * before their definitions in regcomp.h. */
4098 typedef struct regnode_charclass regnode_charclass;
4100 /* A hopefully less confusing name. The sub-classes are all Posix classes only
4101 * used under /l matching */
4102 typedef struct regnode_charclass_posixl regnode_charclass_class;
4103 typedef struct regnode_charclass_posixl regnode_charclass_posixl;
4105 typedef struct regnode_ssc regnode_ssc;
4106 typedef struct RExC_state_t RExC_state_t;
4107 struct _reg_trie_data;
4111 struct ptr_tbl_ent {
4112 struct ptr_tbl_ent* next;
4118 struct ptr_tbl_ent** tbl_ary;
4121 struct ptr_tbl_arena *tbl_arena;
4122 struct ptr_tbl_ent *tbl_arena_next;
4123 struct ptr_tbl_ent *tbl_arena_end;
4126 #if defined(htonl) && !defined(HAS_HTONL)
4129 #if defined(htons) && !defined(HAS_HTONS)
4132 #if defined(ntohl) && !defined(HAS_NTOHL)
4135 #if defined(ntohs) && !defined(HAS_NTOHS)
4143 # if (BYTEORDER & 0xffff) == 0x4321
4144 /* Big endian system, so ntohl, ntohs, htonl and htons do not need to
4145 re-order their values. However, to behave identically to the alternative
4146 implementations, they should truncate to the correct size. */
4147 # define ntohl(x) ((x)&0xFFFFFFFF)
4148 # define htonl(x) ntohl(x)
4149 # define ntohs(x) ((x)&0xFFFF)
4150 # define htons(x) ntohs(x)
4151 # elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
4153 /* Note that we can't straight out declare our own htonl and htons because
4154 the Win32 build process forcibly undefines HAS_HTONL etc for its miniperl,
4155 to avoid the overhead of initialising the socket subsystem, but the headers
4156 that *declare* the various functions are still seen. If we declare our own
4157 htonl etc they will clash with the declarations in the Win32 headers. */
4159 PERL_STATIC_INLINE U32
4160 my_swap32(const U32 x) {
4161 return ((x & 0xFF) << 24) | ((x >> 24) & 0xFF)
4162 | ((x & 0x0000FF00) << 8) | ((x & 0x00FF0000) >> 8);
4165 PERL_STATIC_INLINE U16
4166 my_swap16(const U16 x) {
4167 return ((x & 0xFF) << 8) | ((x >> 8) & 0xFF);
4170 # define htonl(x) my_swap32(x)
4171 # define ntohl(x) my_swap32(x)
4172 # define ntohs(x) my_swap16(x)
4173 # define htons(x) my_swap16(x)
4175 # error "Unsupported byteorder"
4176 /* The C pre-processor doesn't let us return the value of BYTEORDER as part of
4177 the error message. Please check the value of the macro BYTEORDER, as defined
4178 in config.h. The values of BYTEORDER we expect are
4180 big endian little endian
4181 32 bit 0x4321 0x1234
4182 64 bit 0x87654321 0x12345678
4184 If you have a system with a different byte order, please see
4185 pod/perlhack.pod for how to submit a patch to add supporting code.
4191 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
4194 #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
4195 /* Little endian system, so vtohl, vtohs, htovl and htovs do not need to
4196 re-order their values. However, to behave identically to the alternative
4197 implementations, they should truncate to the correct size. */
4198 # define vtohl(x) ((x)&0xFFFFFFFF)
4199 # define vtohs(x) ((x)&0xFFFF)
4200 # define htovl(x) vtohl(x)
4201 # define htovs(x) vtohs(x)
4202 #elif BYTEORDER == 0x4321 || BYTEORDER == 0x87654321
4203 # define vtohl(x) ((((x)&0xFF)<<24) \
4205 +(((x)&0x0000FF00)<<8) \
4206 +(((x)&0x00FF0000)>>8) )
4207 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
4208 # define htovl(x) vtohl(x)
4209 # define htovs(x) vtohs(x)
4211 # error "Unsupported byteorder"
4212 /* If you have need for current perl on PDP-11 or similar, and can help test
4213 that blead keeps working on a mixed-endian system, then see
4214 pod/perlhack.pod for how to submit patches to things working again. */
4217 /* *MAX Plus 1. A floating point value.
4218 Hopefully expressed in a way that dodgy floating point can't mess up.
4219 >> 2 rather than 1, so that value is safely less than I32_MAX after 1
4221 May find that some broken compiler will want the value cast to I32.
4222 [after the shift, as signed >> may not be as secure as unsigned >>]
4224 #define I32_MAX_P1 (2.0 * (1 + (((U32)I32_MAX) >> 1)))
4225 #define U32_MAX_P1 (4.0 * (1 + ((U32_MAX) >> 2)))
4226 /* For compilers that can't correctly cast NVs over 0x7FFFFFFF (or
4227 0x7FFFFFFFFFFFFFFF) to an unsigned integer. In the future, sizeof(UV)
4228 may be greater than sizeof(IV), so don't assume that half max UV is max IV.
4230 #define U32_MAX_P1_HALF (2.0 * (1 + ((U32_MAX) >> 2)))
4232 #define UV_MAX_P1 (4.0 * (1 + ((UV_MAX) >> 2)))
4233 #define IV_MAX_P1 (2.0 * (1 + (((UV)IV_MAX) >> 1)))
4234 #define UV_MAX_P1_HALF (2.0 * (1 + ((UV_MAX) >> 2)))
4236 /* This may look like unnecessary jumping through hoops, but converting
4237 out of range floating point values to integers *is* undefined behaviour,
4238 and it is starting to bite.
4240 =for apidoc_section $casting
4241 =for apidoc Am|I32|I_32|NV what
4242 Cast an NV to I32 while avoiding undefined C behavior
4244 =for apidoc Am|U32|U_32|NV what
4245 Cast an NV to U32 while avoiding undefined C behavior
4247 =for apidoc Am|IV|I_V|NV what
4248 Cast an NV to IV while avoiding undefined C behavior
4250 =for apidoc Am|UV|U_V|NV what
4251 Cast an NV to UV while avoiding undefined C behavior
4256 #define I_32(what) (cast_i32((NV)(what)))
4257 #define U_32(what) (cast_ulong((NV)(what)))
4258 #define I_V(what) (cast_iv((NV)(what)))
4259 #define U_V(what) (cast_uv((NV)(what)))
4261 #define I_32(n) ((n) < I32_MAX_P1 ? ((n) < I32_MIN ? I32_MIN : (I32) (n)) \
4262 : ((n) < U32_MAX_P1 ? (I32)(U32) (n) \
4263 : ((n) > 0 ? (I32) U32_MAX : 0 /* NaN */)))
4264 #define U_32(n) ((n) < 0.0 ? ((n) < I32_MIN ? (UV) I32_MIN : (U32)(I32) (n)) \
4265 : ((n) < U32_MAX_P1 ? (U32) (n) \
4266 : ((n) > 0 ? U32_MAX : 0 /* NaN */)))
4267 #define I_V(n) (LIKELY((n) < IV_MAX_P1) ? (UNLIKELY((n) < IV_MIN) ? IV_MIN : (IV) (n)) \
4268 : (LIKELY((n) < UV_MAX_P1) ? (IV)(UV) (n) \
4269 : ((n) > 0 ? (IV)UV_MAX : 0 /* NaN */)))
4270 #define U_V(n) ((n) < 0.0 ? (UNLIKELY((n) < IV_MIN) ? (UV) IV_MIN : (UV)(IV) (n)) \
4271 : (LIKELY((n) < UV_MAX_P1) ? (UV) (n) \
4272 : ((n) > 0 ? UV_MAX : 0 /* NaN */)))
4275 #define U_S(what) ((U16)U_32(what))
4276 #define U_I(what) ((unsigned int)U_32(what))
4277 #define U_L(what) U_32(what)
4280 =for apidoc_section $integer
4281 =for apidoc Amn|IV|IV_MAX
4282 The largest signed integer that fits in an IV on this platform.
4284 =for apidoc Amn|IV|IV_MIN
4285 The negative signed integer furthest away from 0 that fits in an IV on this
4288 =for apidoc Amn|UV|UV_MAX
4289 The largest unsigned integer that fits in a UV on this platform.
4291 =for apidoc Amn|UV|UV_MIN
4292 The smallest unsigned integer that fits in a UV on this platform. It should
4299 # ifndef Perl_signbit
4300 # define Perl_signbit signbit
4304 /* These do not care about the fractional part, only about the range. */
4305 #define NV_WITHIN_IV(nv) (I_V(nv) >= IV_MIN && I_V(nv) <= IV_MAX)
4306 #define NV_WITHIN_UV(nv) ((nv)>=0.0 && U_V(nv) >= UV_MIN && U_V(nv) <= UV_MAX)
4308 /* Used with UV/IV arguments: */
4309 /* XXXX: need to speed it up */
4310 #define CLUMP_2UV(iv) ((iv) < 0 ? 0 : (UV)(iv))
4311 #define CLUMP_2IV(uv) ((uv) > (UV)IV_MAX ? IV_MAX : (IV)(uv))
4319 Uid_t getuid (void);
4320 Uid_t geteuid (void);
4321 Gid_t getgid (void);
4322 Gid_t getegid (void);
4326 #ifndef Perl_debug_log
4327 # define Perl_debug_log PerlIO_stderr()
4330 #ifndef Perl_error_log
4331 # define Perl_error_log (PL_stderrgv \
4332 && isGV(PL_stderrgv) \
4333 && GvIOp(PL_stderrgv) \
4334 && IoOFP(GvIOp(PL_stderrgv)) \
4335 ? IoOFP(GvIOp(PL_stderrgv)) \
4340 #define DEBUG_p_FLAG 0x00000001 /* 1 */
4341 #define DEBUG_s_FLAG 0x00000002 /* 2 */
4342 #define DEBUG_l_FLAG 0x00000004 /* 4 */
4343 #define DEBUG_t_FLAG 0x00000008 /* 8 */
4344 #define DEBUG_o_FLAG 0x00000010 /* 16 */
4345 #define DEBUG_c_FLAG 0x00000020 /* 32 */
4346 #define DEBUG_P_FLAG 0x00000040 /* 64 */
4347 #define DEBUG_m_FLAG 0x00000080 /* 128 */
4348 #define DEBUG_f_FLAG 0x00000100 /* 256 */
4349 #define DEBUG_r_FLAG 0x00000200 /* 512 */
4350 #define DEBUG_x_FLAG 0x00000400 /* 1024 */
4351 #define DEBUG_u_FLAG 0x00000800 /* 2048 */
4352 /* U is reserved for Unofficial, exploratory hacking */
4353 #define DEBUG_U_FLAG 0x00001000 /* 4096 */
4355 #define DEBUG_X_FLAG 0x00004000 /* 16384 */
4356 #define DEBUG_D_FLAG 0x00008000 /* 32768 */
4357 #define DEBUG_S_FLAG 0x00010000 /* 65536 */
4358 #define DEBUG_T_FLAG 0x00020000 /* 131072 */
4359 #define DEBUG_R_FLAG 0x00040000 /* 262144 */
4360 #define DEBUG_J_FLAG 0x00080000 /* 524288 */
4361 #define DEBUG_v_FLAG 0x00100000 /*1048576 */
4362 #define DEBUG_C_FLAG 0x00200000 /*2097152 */
4363 #define DEBUG_A_FLAG 0x00400000 /*4194304 */
4364 #define DEBUG_q_FLAG 0x00800000 /*8388608 */
4365 #define DEBUG_M_FLAG 0x01000000 /*16777216*/
4366 #define DEBUG_B_FLAG 0x02000000 /*33554432*/
4367 #define DEBUG_L_FLAG 0x04000000 /*67108864*/
4368 #define DEBUG_i_FLAG 0x08000000 /*134217728*/
4369 #define DEBUG_y_FLAG 0x10000000 /*268435456*/
4370 #define DEBUG_MASK 0x1FFFEFFF /* mask of all the standard flags */
4372 #define DEBUG_DB_RECURSE_FLAG 0x40000000
4373 #define DEBUG_TOP_FLAG 0x80000000 /* -D was given --> PL_debug |= FLAG */
4375 # define DEBUG_p_TEST_ UNLIKELY(PL_debug & DEBUG_p_FLAG)
4376 # define DEBUG_s_TEST_ UNLIKELY(PL_debug & DEBUG_s_FLAG)
4377 # define DEBUG_l_TEST_ UNLIKELY(PL_debug & DEBUG_l_FLAG)
4378 # define DEBUG_t_TEST_ UNLIKELY(PL_debug & DEBUG_t_FLAG)
4379 # define DEBUG_o_TEST_ UNLIKELY(PL_debug & DEBUG_o_FLAG)
4380 # define DEBUG_c_TEST_ UNLIKELY(PL_debug & DEBUG_c_FLAG)
4381 # define DEBUG_P_TEST_ UNLIKELY(PL_debug & DEBUG_P_FLAG)
4382 # define DEBUG_m_TEST_ UNLIKELY(PL_debug & DEBUG_m_FLAG)
4383 # define DEBUG_f_TEST_ UNLIKELY(PL_debug & DEBUG_f_FLAG)
4384 # define DEBUG_r_TEST_ UNLIKELY(PL_debug & DEBUG_r_FLAG)
4385 # define DEBUG_x_TEST_ UNLIKELY(PL_debug & DEBUG_x_FLAG)
4386 # define DEBUG_u_TEST_ UNLIKELY(PL_debug & DEBUG_u_FLAG)
4387 # define DEBUG_U_TEST_ UNLIKELY(PL_debug & DEBUG_U_FLAG)
4388 # define DEBUG_X_TEST_ UNLIKELY(PL_debug & DEBUG_X_FLAG)
4389 # define DEBUG_D_TEST_ UNLIKELY(PL_debug & DEBUG_D_FLAG)
4390 # define DEBUG_S_TEST_ UNLIKELY(PL_debug & DEBUG_S_FLAG)
4391 # define DEBUG_T_TEST_ UNLIKELY(PL_debug & DEBUG_T_FLAG)
4392 # define DEBUG_R_TEST_ UNLIKELY(PL_debug & DEBUG_R_FLAG)
4393 # define DEBUG_J_TEST_ UNLIKELY(PL_debug & DEBUG_J_FLAG)
4394 # define DEBUG_v_TEST_ UNLIKELY(PL_debug & DEBUG_v_FLAG)
4395 # define DEBUG_C_TEST_ UNLIKELY(PL_debug & DEBUG_C_FLAG)
4396 # define DEBUG_A_TEST_ UNLIKELY(PL_debug & DEBUG_A_FLAG)
4397 # define DEBUG_q_TEST_ UNLIKELY(PL_debug & DEBUG_q_FLAG)
4398 # define DEBUG_M_TEST_ UNLIKELY(PL_debug & DEBUG_M_FLAG)
4399 # define DEBUG_B_TEST_ UNLIKELY(PL_debug & DEBUG_B_FLAG)
4400 # define DEBUG_L_TEST_ UNLIKELY(PL_debug & DEBUG_L_FLAG)
4401 # define DEBUG_i_TEST_ UNLIKELY(PL_debug & DEBUG_i_FLAG)
4402 # define DEBUG_y_TEST_ UNLIKELY(PL_debug & DEBUG_y_FLAG)
4403 # define DEBUG_Xv_TEST_ (DEBUG_X_TEST_ && DEBUG_v_TEST_)
4404 # define DEBUG_Uv_TEST_ (DEBUG_U_TEST_ && DEBUG_v_TEST_)
4405 # define DEBUG_Pv_TEST_ (DEBUG_P_TEST_ && DEBUG_v_TEST_)
4406 # define DEBUG_Lv_TEST_ (DEBUG_L_TEST_ && DEBUG_v_TEST_)
4407 # define DEBUG_yv_TEST_ (DEBUG_y_TEST_ && DEBUG_v_TEST_)
4411 # define DEBUG_p_TEST DEBUG_p_TEST_
4412 # define DEBUG_s_TEST DEBUG_s_TEST_
4413 # define DEBUG_l_TEST DEBUG_l_TEST_
4414 # define DEBUG_t_TEST DEBUG_t_TEST_
4415 # define DEBUG_o_TEST DEBUG_o_TEST_
4416 # define DEBUG_c_TEST DEBUG_c_TEST_
4417 # define DEBUG_P_TEST DEBUG_P_TEST_
4418 # define DEBUG_m_TEST DEBUG_m_TEST_
4419 # define DEBUG_f_TEST DEBUG_f_TEST_
4420 # define DEBUG_r_TEST DEBUG_r_TEST_
4421 # define DEBUG_x_TEST DEBUG_x_TEST_
4422 # define DEBUG_u_TEST DEBUG_u_TEST_
4423 # define DEBUG_U_TEST DEBUG_U_TEST_
4424 # define DEBUG_X_TEST DEBUG_X_TEST_
4425 # define DEBUG_D_TEST DEBUG_D_TEST_
4426 # define DEBUG_S_TEST DEBUG_S_TEST_
4427 # define DEBUG_T_TEST DEBUG_T_TEST_
4428 # define DEBUG_R_TEST DEBUG_R_TEST_
4429 # define DEBUG_J_TEST DEBUG_J_TEST_
4430 # define DEBUG_v_TEST DEBUG_v_TEST_
4431 # define DEBUG_C_TEST DEBUG_C_TEST_
4432 # define DEBUG_A_TEST DEBUG_A_TEST_
4433 # define DEBUG_q_TEST DEBUG_q_TEST_
4434 # define DEBUG_M_TEST DEBUG_M_TEST_
4435 # define DEBUG_B_TEST DEBUG_B_TEST_
4436 # define DEBUG_L_TEST DEBUG_L_TEST_
4437 # define DEBUG_i_TEST DEBUG_i_TEST_
4438 # define DEBUG_y_TEST DEBUG_y_TEST_
4439 # define DEBUG_Xv_TEST DEBUG_Xv_TEST_
4440 # define DEBUG_Uv_TEST DEBUG_Uv_TEST_
4441 # define DEBUG_Pv_TEST DEBUG_Pv_TEST_
4442 # define DEBUG_Lv_TEST DEBUG_Lv_TEST_
4443 # define DEBUG_yv_TEST DEBUG_yv_TEST_
4445 # define PERL_DEB(a) a
4446 # define PERL_DEB2(a,b) a
4447 # define PERL_DEBUG(a) if (PL_debug) a
4448 # define DEBUG_p(a) if (DEBUG_p_TEST) a
4449 # define DEBUG_s(a) if (DEBUG_s_TEST) a
4450 # define DEBUG_l(a) if (DEBUG_l_TEST) a
4451 # define DEBUG_t(a) if (DEBUG_t_TEST) a
4452 # define DEBUG_o(a) if (DEBUG_o_TEST) a
4453 # define DEBUG_c(a) if (DEBUG_c_TEST) a
4454 # define DEBUG_P(a) if (DEBUG_P_TEST) a
4456 /* Temporarily turn off memory debugging in case the a
4457 * does memory allocation, either directly or indirectly. */
4458 # define DEBUG_m(a) \
4460 if (PERL_GET_INTERP) { \
4462 if (DEBUG_m_TEST) { \
4463 PL_debug &= ~DEBUG_m_FLAG; \
4465 PL_debug |= DEBUG_m_FLAG; \
4470 # define DEBUG__(t, a) \
4472 if (t) STMT_START {a;} STMT_END; \
4475 # define DEBUG_f(a) DEBUG__(DEBUG_f_TEST, a)
4477 /* For re_comp.c, re_exec.c, assume -Dr has been specified */
4478 # ifdef PERL_EXT_RE_BUILD
4479 # define DEBUG_r(a) STMT_START {a;} STMT_END
4481 # define DEBUG_r(a) DEBUG__(DEBUG_r_TEST, a)
4482 # endif /* PERL_EXT_RE_BUILD */
4484 # define DEBUG_x(a) DEBUG__(DEBUG_x_TEST, a)
4485 # define DEBUG_u(a) DEBUG__(DEBUG_u_TEST, a)
4486 # define DEBUG_U(a) DEBUG__(DEBUG_U_TEST, a)
4487 # define DEBUG_X(a) DEBUG__(DEBUG_X_TEST, a)
4488 # define DEBUG_D(a) DEBUG__(DEBUG_D_TEST, a)
4489 # define DEBUG_Xv(a) DEBUG__(DEBUG_Xv_TEST, a)
4490 # define DEBUG_Uv(a) DEBUG__(DEBUG_Uv_TEST, a)
4491 # define DEBUG_Pv(a) DEBUG__(DEBUG_Pv_TEST, a)
4492 # define DEBUG_Lv(a) DEBUG__(DEBUG_Lv_TEST, a)
4493 # define DEBUG_yv(a) DEBUG__(DEBUG_yv_TEST, a)
4495 # define DEBUG_S(a) DEBUG__(DEBUG_S_TEST, a)
4496 # define DEBUG_T(a) DEBUG__(DEBUG_T_TEST, a)
4497 # define DEBUG_R(a) DEBUG__(DEBUG_R_TEST, a)
4498 # define DEBUG_v(a) DEBUG__(DEBUG_v_TEST, a)
4499 # define DEBUG_C(a) DEBUG__(DEBUG_C_TEST, a)
4500 # define DEBUG_A(a) DEBUG__(DEBUG_A_TEST, a)
4501 # define DEBUG_q(a) DEBUG__(DEBUG_q_TEST, a)
4502 # define DEBUG_M(a) DEBUG__(DEBUG_M_TEST, a)
4503 # define DEBUG_B(a) DEBUG__(DEBUG_B_TEST, a)
4504 # define DEBUG_L(a) DEBUG__(DEBUG_L_TEST, a)
4505 # define DEBUG_i(a) DEBUG__(DEBUG_i_TEST, a)
4506 # define DEBUG_y(a) DEBUG__(DEBUG_y_TEST, a)
4508 #else /* ! DEBUGGING below */
4510 # define DEBUG_p_TEST (0)
4511 # define DEBUG_s_TEST (0)
4512 # define DEBUG_l_TEST (0)
4513 # define DEBUG_t_TEST (0)
4514 # define DEBUG_o_TEST (0)
4515 # define DEBUG_c_TEST (0)
4516 # define DEBUG_P_TEST (0)
4517 # define DEBUG_m_TEST (0)
4518 # define DEBUG_f_TEST (0)
4519 # define DEBUG_r_TEST (0)
4520 # define DEBUG_x_TEST (0)
4521 # define DEBUG_u_TEST (0)
4522 # define DEBUG_U_TEST (0)
4523 # define DEBUG_X_TEST (0)
4524 # define DEBUG_D_TEST (0)
4525 # define DEBUG_S_TEST (0)
4526 # define DEBUG_T_TEST (0)
4527 # define DEBUG_R_TEST (0)
4528 # define DEBUG_J_TEST (0)
4529 # define DEBUG_v_TEST (0)
4530 # define DEBUG_C_TEST (0)
4531 # define DEBUG_A_TEST (0)
4532 # define DEBUG_q_TEST (0)
4533 # define DEBUG_M_TEST (0)
4534 # define DEBUG_B_TEST (0)
4535 # define DEBUG_L_TEST (0)
4536 # define DEBUG_i_TEST (0)
4537 # define DEBUG_y_TEST (0)
4538 # define DEBUG_Xv_TEST (0)
4539 # define DEBUG_Uv_TEST (0)
4540 # define DEBUG_Pv_TEST (0)
4541 # define DEBUG_Lv_TEST (0)
4542 # define DEBUG_yv_TEST (0)
4544 # define PERL_DEB(a)
4545 # define PERL_DEB2(a,b) b
4546 # define PERL_DEBUG(a)
4574 # define DEBUG_Xv(a)
4575 # define DEBUG_Uv(a)
4576 # define DEBUG_Pv(a)
4577 # define DEBUG_Lv(a)
4578 # define DEBUG_yv(a)
4579 #endif /* DEBUGGING */
4582 #define DEBUG_SCOPE(where) \
4584 Perl_deb(aTHX_ "%s scope %ld (savestack=%ld) at %s:%d\n", \
4585 where, (long)PL_scopestack_ix, (long)PL_savestack_ix, \
4586 __FILE__, __LINE__));
4588 /* Keep the old croak based assert for those who want it, and as a fallback if
4589 the platform is so heretically non-ANSI that it can't assert. */
4591 #define Perl_assert(what) PERL_DEB2( \
4592 ((what) ? ((void) 0) : \
4593 (Perl_croak_nocontext("Assertion %s failed: file \"" __FILE__ \
4594 "\", line %d", STRINGIFY(what), __LINE__), \
4595 (void) 0)), ((void)0))
4597 /* assert() gets defined if DEBUGGING.
4598 * If no DEBUGGING, the <assert.h> has not been included. */
4600 # define assert(what) Perl_assert(what)
4603 # define assert_(what) assert(what),
4605 # define assert_(what)
4609 I32 (*uf_val)(pTHX_ IV, SV*);
4610 I32 (*uf_set)(pTHX_ IV, SV*);
4614 /* In pre-5.7-Perls the PERL_MAGIC_uvar magic didn't get the thread context.
4615 * XS code wanting to be backward compatible can do something
4616 * like the following:
4618 #ifndef PERL_MG_UFUNC
4619 #define PERL_MG_UFUNC(name,ix,sv) I32 name(IV ix, SV *sv)
4622 static PERL_MG_UFUNC(foo_get, index, val)
4632 #ifndef PERL_MG_UFUNC
4633 #define PERL_MG_UFUNC(name,ix,sv) I32 name(pTHX_ IV ix, SV *sv)
4638 /* isfinite and others are here rather than in math.h as C99 stipulates */
4643 # if !defined(WIN32) && !defined(VMS)
4645 char *crypt (const char*, const char*);
4647 # endif /* !WIN32 */
4650 char *getlogin (void);
4652 # endif /* !WIN32 */
4653 #endif /* !__cplusplus */
4655 /* Fixme on VMS. This needs to be a run-time, not build time options */
4656 /* Also rename() is affected by this */
4657 #ifdef UNLINK_ALL_VERSIONS /* Currently only makes sense for VMS */
4658 #define UNLINK unlnk
4659 I32 unlnk (pTHX_ const char*);
4661 #define UNLINK PerlLIO_unlink
4664 /* some versions of glibc are missing the setresuid() proto */
4665 #if defined(HAS_SETRESUID) && !defined(HAS_SETRESUID_PROTO)
4666 int setresuid(uid_t ruid, uid_t euid, uid_t suid);
4668 /* some versions of glibc are missing the setresgid() proto */
4669 #if defined(HAS_SETRESGID) && !defined(HAS_SETRESGID_PROTO)
4670 int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
4673 #ifndef HAS_SETREUID
4674 # ifdef HAS_SETRESUID
4675 # define setreuid(r,e) setresuid(r,e,(Uid_t)-1)
4676 # define HAS_SETREUID
4679 #ifndef HAS_SETREGID
4680 # ifdef HAS_SETRESGID
4681 # define setregid(r,e) setresgid(r,e,(Gid_t)-1)
4682 # define HAS_SETREGID
4686 /* Sighandler_t defined in iperlsys.h */
4688 #ifdef HAS_SIGACTION
4689 typedef struct sigaction Sigsave_t;
4691 typedef Sighandler_t Sigsave_t;
4702 # define RUNOPS_DEFAULT Perl_runops_debug
4704 # define RUNOPS_DEFAULT Perl_runops_standard
4707 #if defined(USE_PERLIO)
4708 EXTERN_C void PerlIO_teardown(void);
4709 # ifdef USE_ITHREADS
4710 # define PERLIO_INIT MUTEX_INIT(&PL_perlio_mutex)
4711 # define PERLIO_TERM \
4713 PerlIO_teardown(); \
4714 MUTEX_DESTROY(&PL_perlio_mutex);\
4717 # define PERLIO_INIT
4718 # define PERLIO_TERM PerlIO_teardown()
4721 # define PERLIO_INIT
4722 # define PERLIO_TERM
4726 # ifdef MUTEX_INIT_CALLS_MALLOC
4727 # define MALLOC_INIT \
4729 PL_malloc_mutex = NULL; \
4730 MUTEX_INIT(&PL_malloc_mutex); \
4732 # define MALLOC_TERM \
4734 perl_mutex tmp = PL_malloc_mutex; \
4735 PL_malloc_mutex = NULL; \
4736 MUTEX_DESTROY(&tmp); \
4739 # define MALLOC_INIT MUTEX_INIT(&PL_malloc_mutex)
4740 # define MALLOC_TERM MUTEX_DESTROY(&PL_malloc_mutex)
4743 # define MALLOC_INIT
4744 # define MALLOC_TERM
4747 #if defined(PERL_IMPLICIT_CONTEXT)
4749 struct perl_memory_debug_header;
4750 struct perl_memory_debug_header {
4752 # if defined(PERL_POISON) || defined(PERL_DEBUG_READONLY_COW)
4755 struct perl_memory_debug_header *prev;
4756 struct perl_memory_debug_header *next;
4757 # ifdef PERL_DEBUG_READONLY_COW
4762 #elif defined(PERL_DEBUG_READONLY_COW)
4764 struct perl_memory_debug_header;
4765 struct perl_memory_debug_header {
4771 #if defined (PERL_TRACK_MEMPOOL) || defined (PERL_DEBUG_READONLY_COW)
4773 # define PERL_MEMORY_DEBUG_HEADER_SIZE \
4774 (sizeof(struct perl_memory_debug_header) + \
4775 (MEM_ALIGNBYTES - sizeof(struct perl_memory_debug_header) \
4776 %MEM_ALIGNBYTES) % MEM_ALIGNBYTES)
4779 # define PERL_MEMORY_DEBUG_HEADER_SIZE 0
4782 #ifdef PERL_TRACK_MEMPOOL
4783 # ifdef PERL_DEBUG_READONLY_COW
4784 # define INIT_TRACK_MEMPOOL(header, interp) \
4786 (header).interpreter = (interp); \
4787 (header).prev = (header).next = &(header); \
4788 (header).readonly = 0; \
4791 # define INIT_TRACK_MEMPOOL(header, interp) \
4793 (header).interpreter = (interp); \
4794 (header).prev = (header).next = &(header); \
4798 # define INIT_TRACK_MEMPOOL(header, interp)
4801 #ifdef I_MALLOCMALLOC
4802 /* Needed for malloc_size(), malloc_good_size() on some systems */
4803 # include <malloc/malloc.h>
4807 # define Perl_safesysmalloc_size(where) Perl_malloced_size(where)
4809 # if defined(HAS_MALLOC_SIZE) && !defined(PERL_DEBUG_READONLY_COW)
4810 # ifdef PERL_TRACK_MEMPOOL
4811 # define Perl_safesysmalloc_size(where) \
4812 (malloc_size(((char *)(where)) - PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
4814 # define Perl_safesysmalloc_size(where) malloc_size(where)
4817 # ifdef HAS_MALLOC_GOOD_SIZE
4818 # ifdef PERL_TRACK_MEMPOOL
4819 # define Perl_malloc_good_size(how_much) \
4820 (malloc_good_size((how_much) + PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
4822 # define Perl_malloc_good_size(how_much) malloc_good_size(how_much)
4825 /* Having this as the identity operation makes some code simpler. */
4826 # define Perl_malloc_good_size(how_much) (how_much)
4830 typedef int (*runops_proc_t)(pTHX);
4831 typedef void (*share_proc_t) (pTHX_ SV *sv);
4832 typedef int (*thrhook_proc_t) (pTHX);
4833 typedef OP* (*PPADDR_t[]) (pTHX);
4834 typedef bool (*destroyable_proc_t) (pTHX_ SV *sv);
4835 typedef void (*despatch_signals_proc_t) (pTHX);
4837 #if defined(__DYNAMIC__) && defined(PERL_DARWIN) && defined(PERL_CORE)
4838 # include <crt_externs.h> /* for the env array */
4839 # define environ (*_NSGetEnviron())
4840 #elif defined(USE_ENVIRON_ARRAY) && !defined(environ)
4841 /* VMS and some other platforms don't use the environ array */
4842 EXTERN_C char **environ; /* environment variables supplied via exec */
4845 #define PERL_PATCHLEVEL_H_IMPLICIT
4846 #include "patchlevel.h"
4847 #undef PERL_PATCHLEVEL_H_IMPLICIT
4849 #define PERL_VERSION_STRING STRINGIFY(PERL_REVISION) "." \
4850 STRINGIFY(PERL_VERSION) "." \
4851 STRINGIFY(PERL_SUBVERSION)
4853 #define PERL_API_VERSION_STRING STRINGIFY(PERL_API_REVISION) "." \
4854 STRINGIFY(PERL_API_VERSION) "." \
4855 STRINGIFY(PERL_API_SUBVERSION)
4859 /* handy constants */
4860 EXTCONST char PL_warn_uninit[]
4861 INIT("Use of uninitialized value%s%s%s");
4862 EXTCONST char PL_warn_uninit_sv[]
4863 INIT("Use of uninitialized value%" SVf "%s%s");
4864 EXTCONST char PL_warn_nosemi[]
4865 INIT("Semicolon seems to be missing");
4866 EXTCONST char PL_warn_reserved[]
4867 INIT("Unquoted string \"%s\" may clash with future reserved word");
4868 EXTCONST char PL_warn_nl[]
4869 INIT("Unsuccessful %s on filename containing newline");
4870 EXTCONST char PL_no_wrongref[]
4871 INIT("Can't use %s ref as %s ref");
4872 /* The core no longer needs this here. If you require the string constant,
4873 please inline a copy into your own code. */
4874 EXTCONST char PL_no_symref[] __attribute__deprecated__
4875 INIT("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use");
4876 EXTCONST char PL_no_symref_sv[]
4877 INIT("Can't use string (\"%" SVf32 "\"%s) as %s ref while \"strict refs\" in use");
4879 EXTCONST char PL_no_usym[]
4880 INIT("Can't use an undefined value as %s reference");
4881 EXTCONST char PL_no_aelem[]
4882 INIT("Modification of non-creatable array value attempted, subscript %d");
4883 EXTCONST char PL_no_helem_sv[]
4884 INIT("Modification of non-creatable hash value attempted, subscript \"%" SVf "\"");
4885 EXTCONST char PL_no_modify[]
4886 INIT("Modification of a read-only value attempted");
4887 EXTCONST char PL_no_mem[sizeof("Out of memory!\n")]
4888 INIT("Out of memory!\n");
4889 EXTCONST char PL_no_security[]
4890 INIT("Insecure dependency in %s%s");
4891 EXTCONST char PL_no_sock_func[]
4892 INIT("Unsupported socket function \"%s\" called");
4893 EXTCONST char PL_no_dir_func[]
4894 INIT("Unsupported directory function \"%s\" called");
4895 EXTCONST char PL_no_func[]
4896 INIT("The %s function is unimplemented");
4897 EXTCONST char PL_no_myglob[]
4898 INIT("\"%s\" %s %s can't be in a package");
4899 EXTCONST char PL_no_localize_ref[]
4900 INIT("Can't localize through a reference");
4901 EXTCONST char PL_memory_wrap[]
4902 INIT("panic: memory wrap");
4903 EXTCONST char PL_extended_cp_format[]
4904 INIT("Code point 0x%" UVXf " is not Unicode, requires a Perl extension,"
4905 " and so is not portable");
4906 EXTCONST char PL_Yes[]
4908 EXTCONST char PL_No[]
4910 EXTCONST char PL_Zero[]
4914 =for apidoc_section $numeric
4915 =for apidoc AmTuU|const char *|PL_hexdigit|U8 value
4917 This array, indexed by an integer, converts that value into the character that
4918 represents it. For example, if the input is 8, the return will be a string
4919 whose first character is '8'. What is actually returned is a pointer into a
4920 string. All you are interested in is the first character of that string. To
4921 get uppercase letters (for the values 10..15), add 16 to the index. Hence,
4922 C<PL_hexdigit[11]> is C<'b'>, and C<PL_hexdigit[11+16]> is C<'B'>. Adding 16
4923 to an index whose representation is '0'..'9' yields the same as not adding 16.
4924 Indices outside the range 0..31 result in (bad) undedefined behavior.
4928 EXTCONST char PL_hexdigit[]
4929 INIT("0123456789abcdef0123456789ABCDEF");
4931 EXTCONST STRLEN PL_WARN_ALL
4933 EXTCONST STRLEN PL_WARN_NONE
4936 /* This is constant on most architectures, a global on OS/2 */
4938 EXTCONST char PL_sh_path[]
4939 INIT(SH_PATH); /* full path of shell */
4943 EXTCONST char PL_cshname[]
4945 # define PL_cshlen (sizeof(CSH "") - 1)
4948 /* These are baked at compile time into any shared perl library.
4949 In future releases this will allow us in main() to sanity test the
4950 library we're linking against. */
4952 EXTCONST U8 PL_revision
4953 INIT(PERL_REVISION);
4954 EXTCONST U8 PL_version
4956 EXTCONST U8 PL_subversion
4957 INIT(PERL_SUBVERSION);
4959 EXTCONST char PL_uuemap[65]
4960 INIT("`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_");
4962 /* a special string address whose value is "isa", but which perl knows
4963 * to treat as if it were really "DOES" when printing the method name in
4964 * the "Can't call method '%s'" error message */
4965 EXTCONST char PL_isa_DOES[]
4969 EXTCONST char PL_uudmap[256] =
4971 # include "uuudmap.h"
4973 # include "uudmap.h"
4976 EXTCONST char PL_bitcount[256] =
4978 # include "ubitcount.h"
4980 # include "bitcount.h"
4983 EXTCONST char* const PL_sig_name[] = { SIG_NAME };
4984 EXTCONST int PL_sig_num[] = { SIG_NUM };
4986 EXTCONST char PL_uudmap[256];
4987 EXTCONST char PL_bitcount[256];
4988 EXTCONST char* const PL_sig_name[];
4989 EXTCONST int PL_sig_num[];
4992 /* fast conversion and case folding tables. The folding tables complement the
4993 * fold, so that 'a' maps to 'A' and 'A' maps to 'a', ignoring more complicated
4994 * folds such as outside the range or to multiple characters. */
4999 /* The EBCDIC fold table depends on the code page, and hence is found in
5000 * ebcdic_tables.h */
5002 EXTCONST unsigned char PL_fold[] = {
5003 0, 1, 2, 3, 4, 5, 6, 7,
5004 8, 9, 10, 11, 12, 13, 14, 15,
5005 16, 17, 18, 19, 20, 21,