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 Compiler 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 START_EXTERN_C extern "C" {
118 # define END_EXTERN_C }
119 # define EXTERN_C 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 /* this used to be off by default, now its on, see perlio.h */
139 #define PERLIO_FUNCS_CONST
141 #ifdef PERL_IMPLICIT_CONTEXT
142 # ifndef MULTIPLICITY
143 # define MULTIPLICITY
145 # define tTHX PerlInterpreter*
146 # define pTHX tTHX my_perl PERL_UNUSED_DECL
147 # define aTHX my_perl
148 # define aTHXa(a) aTHX = (tTHX)a
149 # define dTHXa(a) pTHX = (tTHX)a
150 # define dTHX pTHX = PERL_GET_THX
163 # if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL)
164 # define PERL_TRACK_MEMPOOL
167 # undef PERL_TRACK_MEMPOOL
171 # define dTHX_DEBUGGING dTHX
173 # define dTHX_DEBUGGING dNOOP
176 #define STATIC static
179 /* Do not use these macros. They were part of PERL_OBJECT, which was an
180 * implementation of multiplicity using C++ objects. They have been left
181 * here solely for the sake of XS code which has incorrectly
184 * The only one Devel::PPPort handles is this; list it as deprecated
186 =for apidoc_section Concurrency
187 =for apidoc AmD|void|CPERLscope|void x
192 #define CPERLscope(x) x
193 #define CPERLarg void
196 #define PERL_OBJECT_THIS
197 #define _PERL_OBJECT_THIS
198 #define PERL_OBJECT_THIS_
199 #define CALL_FPTR(fptr) (*fptr)
200 #define MEMBER_TO_FPTR(name) name
201 #endif /* !PERL_CORE */
203 #define CALLRUNOPS PL_runops
205 #define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags))
207 #define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags)
208 #define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \
209 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \
210 (strbeg),(minend),(sv),(data),(flags))
211 #define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \
212 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \
213 (strend),(flags),(data))
214 #define CALLREG_INTUIT_STRING(prog) \
215 RX_ENGINE(prog)->checkstr(aTHX_ (prog))
217 #define CALLREGFREE(prog) \
218 Perl_pregfree(aTHX_ (prog))
220 #define CALLREGFREE_PVT(prog) \
221 if(prog && RX_ENGINE(prog)) RX_ENGINE(prog)->rxfree(aTHX_ (prog))
223 #define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \
224 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv))
226 #define CALLREG_NUMBUF_STORE(rx,paren,value) \
227 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value))
229 #define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \
230 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren))
232 #define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \
233 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH))
235 #define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \
236 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE))
238 #define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \
239 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE))
241 #define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \
242 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR))
244 #define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \
245 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS))
247 #define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \
248 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY))
250 #define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \
251 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY))
253 #define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \
254 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR))
256 #define CALLREG_NAMED_BUFF_COUNT(rx) \
257 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT)
259 #define CALLREG_NAMED_BUFF_ALL(rx, flags) \
260 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags)
262 #define CALLREG_PACKAGE(rx) \
263 RX_ENGINE(rx)->qr_package(aTHX_ (rx))
265 #if defined(USE_ITHREADS)
266 #define CALLREGDUPE(prog,param) \
267 Perl_re_dup(aTHX_ (prog),(param))
269 #define CALLREGDUPE_PVT(prog,param) \
270 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \
274 /* some compilers impersonate gcc */
275 #if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
276 # define PERL_IS_GCC 1
279 /* In case Configure was not used (we are using a "canned config"
280 * such as Win32, or a cross-compilation setup, for example) try going
281 * by the gcc major and minor versions. One useful URL is
282 * http://www.ohse.de/uwe/articles/gcc-attributes.html,
283 * but contrary to this information warn_unused_result seems
284 * not to be in gcc 3.3.5, at least. --jhi
285 * Also, when building extensions with an installed perl, this allows
286 * the user to upgrade gcc and get the right attributes, rather than
287 * relying on the list generated at Configure time. --AD
288 * Set these up now otherwise we get confused when some of the <*thread.h>
289 * includes below indirectly pull in <perlio.h> (which needs to know if we
290 * have HASATTRIBUTE_FORMAT).
294 #if defined __GNUC__ && !defined(__INTEL_COMPILER)
295 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 1 || __GNUC__ > 3 /* 3.1 -> */
296 # define HASATTRIBUTE_DEPRECATED
298 # if __GNUC__ >= 3 /* 3.0 -> */ /* XXX Verify this version */
299 # define HASATTRIBUTE_FORMAT
300 # if defined __MINGW32__
301 # define PRINTF_FORMAT_NULL_OK
304 # if __GNUC__ >= 3 /* 3.0 -> */
305 # define HASATTRIBUTE_MALLOC
307 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 3 || __GNUC__ > 3 /* 3.3 -> */
308 # define HASATTRIBUTE_NONNULL
310 # if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 || __GNUC__ > 2 /* 2.5 -> */
311 # define HASATTRIBUTE_NORETURN
313 # if __GNUC__ >= 3 /* gcc 3.0 -> */
314 # define HASATTRIBUTE_PURE
316 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
317 # define HASATTRIBUTE_UNUSED
319 # if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus)
320 # define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */
322 # if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
323 # define HASATTRIBUTE_WARN_UNUSED_RESULT
325 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */
326 # if __GNUC__ == 4 && __GNUC_MINOR__ >= 7 || __GNUC__ > 4 /* 4.7 -> */
327 # define HASATTRIBUTE_ALWAYS_INLINE
330 #endif /* #ifndef PERL_MICRO */
332 #ifdef HASATTRIBUTE_DEPRECATED
333 # define __attribute__deprecated__ __attribute__((deprecated))
335 #ifdef HASATTRIBUTE_FORMAT
336 # define __attribute__format__(x,y,z) __attribute__((format(x,y,z)))
338 #ifdef HASATTRIBUTE_MALLOC
339 # define __attribute__malloc__ __attribute__((__malloc__))
341 #ifdef HASATTRIBUTE_NONNULL
342 # define __attribute__nonnull__(a) __attribute__((nonnull(a)))
344 #ifdef HASATTRIBUTE_NORETURN
345 # define __attribute__noreturn__ __attribute__((noreturn))
347 #ifdef HASATTRIBUTE_PURE
348 # define __attribute__pure__ __attribute__((pure))
350 #ifdef HASATTRIBUTE_UNUSED
351 # define __attribute__unused__ __attribute__((unused))
353 #ifdef HASATTRIBUTE_WARN_UNUSED_RESULT
354 # define __attribute__warn_unused_result__ __attribute__((warn_unused_result))
356 #ifdef HASATTRIBUTE_ALWAYS_INLINE
357 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */
358 # if !defined(PERL_IS_GCC) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7 || __GNUC__ > 4)
359 # define __attribute__always_inline__ __attribute__((always_inline))
363 /* If we haven't defined the attributes yet, define them to blank. */
364 #ifndef __attribute__deprecated__
365 # define __attribute__deprecated__
367 #ifndef __attribute__format__
368 # define __attribute__format__(x,y,z)
370 #ifndef __attribute__malloc__
371 # define __attribute__malloc__
373 #ifndef __attribute__nonnull__
374 # define __attribute__nonnull__(a)
376 #ifndef __attribute__noreturn__
377 # define __attribute__noreturn__
379 #ifndef __attribute__pure__
380 # define __attribute__pure__
382 #ifndef __attribute__unused__
383 # define __attribute__unused__
385 #ifndef __attribute__warn_unused_result__
386 # define __attribute__warn_unused_result__
388 #ifndef __attribute__always_inline__
389 # define __attribute__always_inline__
392 /* Some OS warn on NULL format to printf */
393 #ifdef PRINTF_FORMAT_NULL_OK
394 # define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z)
396 # define __attribute__format__null_ok__(x,y,z)
400 * Because of backward compatibility reasons the PERL_UNUSED_DECL
401 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh.
403 * Note that there are C compilers such as MetroWerks CodeWarrior
404 * which do not have an "inlined" way (like the gcc __attribute__) of
405 * marking unused variables (they need e.g. a #pragma) and therefore
406 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even
407 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above).
409 =for apidoc_section Compiler directives
410 =for apidoc AmnU||PERL_UNUSED_DECL
411 Tells the compiler that the parameter in the function prototype just before it
412 is not necessarily expected to be used in the function. Not that many
413 compilers understand this, so this should only be used in cases where
414 C<L</PERL_UNUSED_ARG>> can't conveniently be used.
421 Perl_perly_sighandler(int sig, Siginfo_t *sip PERL_UNUSED_DECL,
422 void *uap PERL_UNUSED_DECL, bool safe)
429 #ifndef PERL_UNUSED_DECL
430 # define PERL_UNUSED_DECL __attribute__unused__
434 * for silencing unused variables that are actually used most of the time,
435 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs,
436 * or variables/arguments that are used only in certain configurations.
438 =for apidoc Ams||PERL_UNUSED_ARG|void x
439 This is used to suppress compiler warnings that a parameter to a function is
440 not used. This situation can arise, for example, when a parameter is needed
441 under some configuration conditions, but not others, so that C preprocessor
442 conditional compilation causes it be used just some times.
444 =for apidoc Amns||PERL_UNUSED_CONTEXT
445 This is used to suppress compiler warnings that the thread context parameter to
446 a function is not used. This situation can arise, for example, when a
447 C preprocessor conditional compilation causes it be used just some times.
449 =for apidoc Ams||PERL_UNUSED_VAR|void x
450 This is used to suppress compiler warnings that the variable I<x> is not used.
451 This situation can arise, for example, when a C preprocessor conditional
452 compilation causes it be used just some times.
456 #ifndef PERL_UNUSED_ARG
457 # define PERL_UNUSED_ARG(x) ((void)sizeof(x))
459 #ifndef PERL_UNUSED_VAR
460 # define PERL_UNUSED_VAR(x) ((void)sizeof(x))
463 #if defined(USE_ITHREADS)
464 # define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl)
466 # define PERL_UNUSED_CONTEXT
469 /* gcc (-ansi) -pedantic doesn't allow gcc statement expressions,
470 * g++ allows them but seems to have problems with them
471 * (insane errors ensue).
472 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2).
474 #if defined(PERL_GCC_PEDANTIC) || \
475 (defined(__GNUC__) && defined(__cplusplus) && \
476 ((__GNUC__ < 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ < 2))))
477 # ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
478 # define PERL_GCC_BRACE_GROUPS_FORBIDDEN
484 =for apidoc Am||PERL_UNUSED_RESULT|void x
486 This macro indicates to discard the return value of the function call inside
489 PERL_UNUSED_RESULT(foo(a, b))
491 The main reason for this is that the combination of C<gcc -Wunused-result>
492 (part of C<-Wall>) and the C<__attribute__((warn_unused_result))> cannot
493 be silenced with casting to C<void>. This causes trouble when the system
494 header files use the attribute.
496 Use C<PERL_UNUSED_RESULT> sparingly, though, since usually the warning
497 is there for a good reason: you might lose success/failure information,
498 or leak resources, or changes in resources.
500 But sometimes you just want to ignore the return value, I<e.g.>, on
501 codepaths soon ending up in abort, or in "best effort" attempts,
502 or in situations where there is no good way to handle failures.
504 Sometimes C<PERL_UNUSED_RESULT> might not be the most natural way:
505 another possibility is that you can capture the return value
506 and use C<L</PERL_UNUSED_VAR>> on that.
510 The __typeof__() is used instead of typeof() since typeof() is not
511 available under strict C89, and because of compilers masquerading
512 as gcc (clang and icc), we want exactly the gcc extension
513 __typeof__ and nothing else.
516 #ifndef PERL_UNUSED_RESULT
517 # if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT)
518 # define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END
520 # define PERL_UNUSED_RESULT(v) ((void)(v))
524 #if defined(_MSC_VER)
525 /* XXX older MSVC versions have a smallish macro buffer */
526 #define PERL_SMALL_MACRO_BUFFER
529 /* on gcc (and clang), specify that a warning should be temporarily
532 * GCC_DIAG_IGNORE_DECL(-Wmultichar);
534 * GCC_DIAG_RESTORE_DECL;
536 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html
538 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011;
539 * clang only pretends to be GCC 4.2, but still supports push/pop.
541 * Note on usage: all macros must be used at a place where a declaration
542 * or statement can occur, i.e., not in the middle of an expression.
543 * *_DIAG_IGNORE() and *_DIAG_RESTORE can be used in any such place, but
544 * must be used without a following semicolon. *_DIAG_IGNORE_DECL() and
545 * *_DIAG_RESTORE_DECL must be used with a following semicolon, and behave
546 * syntactically as declarations (like dNOOP). *_DIAG_IGNORE_STMT()
547 * and *_DIAG_RESTORE_STMT must be used with a following semicolon,
548 * and behave syntactically as statements (like NOOP).
552 #if defined(__clang__) || defined(__clang) || \
553 (defined( __GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406)
554 # define GCC_DIAG_PRAGMA(x) _Pragma (#x)
555 /* clang has "clang diagnostic" pragmas, but also understands gcc. */
556 # define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \
557 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x)
558 # define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop")
560 # define GCC_DIAG_IGNORE(w)
561 # define GCC_DIAG_RESTORE
563 #define GCC_DIAG_IGNORE_DECL(x) GCC_DIAG_IGNORE(x) dNOOP
564 #define GCC_DIAG_RESTORE_DECL GCC_DIAG_RESTORE dNOOP
565 #define GCC_DIAG_IGNORE_STMT(x) GCC_DIAG_IGNORE(x) NOOP
566 #define GCC_DIAG_RESTORE_STMT GCC_DIAG_RESTORE NOOP
567 /* for clang specific pragmas */
568 #if defined(__clang__) || defined(__clang)
569 # define CLANG_DIAG_PRAGMA(x) _Pragma (#x)
570 # define CLANG_DIAG_IGNORE(x) _Pragma("clang diagnostic push") \
571 CLANG_DIAG_PRAGMA(clang diagnostic ignored #x)
572 # define CLANG_DIAG_RESTORE _Pragma("clang diagnostic pop")
574 # define CLANG_DIAG_IGNORE(w)
575 # define CLANG_DIAG_RESTORE
577 #define CLANG_DIAG_IGNORE_DECL(x) CLANG_DIAG_IGNORE(x) dNOOP
578 #define CLANG_DIAG_RESTORE_DECL CLANG_DIAG_RESTORE dNOOP
579 #define CLANG_DIAG_IGNORE_STMT(x) CLANG_DIAG_IGNORE(x) NOOP
580 #define CLANG_DIAG_RESTORE_STMT CLANG_DIAG_RESTORE NOOP
582 #if defined(_MSC_VER) && (_MSC_VER >= 1300)
583 # define MSVC_DIAG_IGNORE(x) __pragma(warning(push)) \
584 __pragma(warning(disable : x))
585 # define MSVC_DIAG_RESTORE __pragma(warning(pop))
587 # define MSVC_DIAG_IGNORE(x)
588 # define MSVC_DIAG_RESTORE
590 #define MSVC_DIAG_IGNORE_DECL(x) MSVC_DIAG_IGNORE(x) dNOOP
591 #define MSVC_DIAG_RESTORE_DECL MSVC_DIAG_RESTORE dNOOP
592 #define MSVC_DIAG_IGNORE_STMT(x) MSVC_DIAG_IGNORE(x) NOOP
593 #define MSVC_DIAG_RESTORE_STMT MSVC_DIAG_RESTORE NOOP
596 =for apidoc Amns||NOOP
597 Do nothing; typically used as a placeholder to replace something that used to
600 =for apidoc Amns||dNOOP
601 Declare nothing; typically used as a placeholder to replace something that used
602 to declare something. Works on compilers that require declarations before any
607 #define NOOP /*EMPTY*/(void)0
608 #define dNOOP struct Perl___notused_struct
611 /* Don't bother defining tTHX ; using it outside
612 * code guarded by PERL_IMPLICIT_CONTEXT is an error.
618 # define aTHXa(a) NOOP
619 # define dTHXa(a) dNOOP
634 =for apidoc_section Concurrency
635 =for apidoc AmnU||dVAR
636 This is now a synonym for dNOOP: declare nothing
642 /* Backwards compatibility macro for XS code. It used to be part of the
643 * PERL_GLOBAL_STRUCT(_PRIVATE) feature, which no longer exists */
646 /* these are only defined for compatibility; should not be used internally.
650 # define pTHXo_ pTHX_
652 # define aTHXo_ aTHX_
654 # define dTHXoa(x) dTHXa(x)
659 # define pTHXx PerlInterpreter *my_perl
660 # define pTHXx_ pTHXx,
661 # define aTHXx my_perl
662 # define aTHXx_ aTHXx,
666 /* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation)
667 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...).
668 * dTHXs is therefore needed for all functions using PerlIO_foo(). */
669 #ifdef PERL_IMPLICIT_SYS
675 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
676 # ifndef PERL_USE_GCC_BRACE_GROUPS
677 # define PERL_USE_GCC_BRACE_GROUPS
682 =for apidoc_section Compiler directives
683 =for apidoc AmnUu|void|STMT_START
684 =for apidoc_item ||STMT_END
686 This allows a series of statements in a macro to be used as a single statement,
689 if (x) STMT_START { ... } STMT_END else ...
691 Note that you can't return a value out of them, which limits their utility.
692 But see C<L</PERL_USE_GCC_BRACE_GROUPS>>.
694 =for apidoc AmnuU|bool|PERL_USE_GCC_BRACE_GROUPS
696 This C pre-processor value, if defined, indicates that it is permissible to use
697 the GCC brace groups extension. This extension, of the form
701 turns the block consisting of I<statements ...> into an expression with a
702 value, unlike plain C language blocks. This can present optimization
703 possibilities, B<BUT> you generally need to specify an alternative in case this
704 ability doesn't exist or has otherwise been forbidden.
710 #ifdef PERL_USE_GCC_BRACE_GROUPS
720 Trying to select a version that gives no warnings...
722 #if !(defined(STMT_START) && defined(STMT_END))
723 # ifdef PERL_USE_GCC_BRACE_GROUPS
724 # define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
727 # define STMT_START do
728 # define STMT_END while (0)
732 #ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
733 # define BYTEORDER 0x1234
736 #if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
743 * The following contortions are brought to you on behalf of all the
744 * standards, semi-standards, de facto standards, not-so-de-facto standards
745 * of the world, as well as all the other botches anyone ever thought of.
746 * The basic theory is that if we work hard enough here, the rest of the
747 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
750 /* define this once if either system, instead of cluttering up the src */
751 #if defined(MSDOS) || defined(WIN32) || defined(NETWARE)
755 /* These exist only for back-compat with XS modules. */
758 #define CAN_PROTOTYPE
765 /* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT,
766 * you get a perl without taint support, but doubtlessly with a lesser
767 * degree of support. Do not do so unless you know exactly what it means
768 * technically, have a good reason to do so, and know exactly how the
769 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered
770 * a potential security risk due to flat out ignoring the security-relevant
771 * taint flags. This being said, a perl without taint support compiled in
772 * has marginal run-time performance benefits.
773 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT.
774 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it
775 * silently ignores -t/-T instead of throwing an exception.
777 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT
778 * voids your nonexistent warranty!
780 #if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT)
781 # define NO_TAINT_SUPPORT 1
784 /* NO_TAINT_SUPPORT can be set to transform virtually all taint-related
785 * operations into no-ops for a very modest speed-up. Enable only if you
786 * know what you're doing: tests and CPAN modules' tests are bound to fail.
788 #ifdef NO_TAINT_SUPPORT
790 # define TAINT_NOT NOOP
791 # define TAINT_IF(c) NOOP
792 # define TAINT_ENV() NOOP
793 # define TAINT_PROPER(s) NOOP
794 # define TAINT_set(s) NOOP
796 # define TAINTING_get 0
797 # define TAINTING_set(s) NOOP
798 # define TAINT_WARN_get 0
799 # define TAINT_WARN_set(s) NOOP
801 /* Set to tainted if we are running under tainting mode */
802 # define TAINT (PL_tainted = PL_tainting)
804 # define TAINT_NOT (PL_tainted = FALSE) /* Untaint */
805 # define TAINT_IF(c) if (UNLIKELY(c)) { TAINT; } /* Conditionally taint */
806 # define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); }
807 /* croak or warn if tainting */
808 # define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { \
809 taint_proper(NULL, s); \
811 # define TAINT_set(s) (PL_tainted = (s))
812 # define TAINT_get (cBOOL(UNLIKELY(PL_tainted))) /* Is something tainted? */
813 # define TAINTING_get (cBOOL(UNLIKELY(PL_tainting))) /* Is taint checking enabled? */
814 # define TAINTING_set(s) (PL_tainting = (s))
815 # define TAINT_WARN_get (PL_taint_warn) /* FALSE => tainting violations
819 # define TAINT_WARN_set(s) (PL_taint_warn = (s))
822 /* flags used internally only within pp_subst and pp_substcont */
824 # define SUBST_TAINT_STR 1 /* string tainted */
825 # define SUBST_TAINT_PAT 2 /* pattern tainted */
826 # define SUBST_TAINT_REPL 4 /* replacement tainted */
827 # define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */
828 # define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */
831 /* XXX All process group stuff is handled in pp_sys.c. Should these
832 defines move there? If so, I could simplify this a lot. --AD 9/96.
834 /* Process group stuff changed from traditional BSD to POSIX.
835 perlfunc.pod documents the traditional BSD-style syntax, so we'll
836 try to preserve that, if possible.
839 # define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
840 #elif defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
841 # define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
842 #elif defined(HAS_SETPGRP2)
843 # define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
845 #if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
846 # define HAS_SETPGRP /* Well, effectively it does . . . */
849 /* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
850 our life easier :-) so we'll try it.
853 # define BSD_GETPGRP(pid) getpgid((pid))
854 #elif defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
855 # define BSD_GETPGRP(pid) getpgrp((pid))
856 #elif defined(HAS_GETPGRP2)
857 # define BSD_GETPGRP(pid) getpgrp2((pid))
859 #if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
860 # define HAS_GETPGRP /* Well, effectively it does . . . */
863 /* These are not exact synonyms, since setpgrp() and getpgrp() may
864 have different behaviors, but perl.h used to define USE_BSDPGRP
865 (prior to 5.003_05) so some extension might depend on it.
867 #if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
873 /* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that
874 pthread.h must be included before all other header files.
876 #if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
877 # include <pthread.h>
880 #include <sys/types.h>
896 #ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
909 # include <xlocale.h>
912 /* If not forbidden, we enable locale handling if either 1) the POSIX 2008
913 * functions are available, or 2) just the setlocale() function. This logic is
914 * repeated in t/loc_tools.pl and makedef.pl; The three should be kept in
916 #if ! defined(NO_LOCALE)
918 # if ! defined(NO_POSIX_2008_LOCALE) \
919 && defined(HAS_NEWLOCALE) \
920 && defined(HAS_USELOCALE) \
921 && defined(HAS_DUPLOCALE) \
922 && defined(HAS_FREELOCALE) \
923 && defined(LC_ALL_MASK)
925 /* For simplicity, the code is written to assume that any platform advanced
926 * enough to have the Posix 2008 locale functions has LC_ALL. The final
927 * test above makes sure that assumption is valid */
929 # define HAS_POSIX_2008_LOCALE
931 # elif defined(HAS_SETLOCALE)
937 # define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
939 # if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
940 && defined(HAS_STRXFRM)
941 # define USE_LOCALE_COLLATE
943 # if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
944 # define USE_LOCALE_CTYPE
946 # if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
947 # define USE_LOCALE_NUMERIC
949 # if !defined(NO_LOCALE_MESSAGES) && defined(LC_MESSAGES)
950 # define USE_LOCALE_MESSAGES
952 # if !defined(NO_LOCALE_MONETARY) && defined(LC_MONETARY)
953 # define USE_LOCALE_MONETARY
955 # if !defined(NO_LOCALE_TIME) && defined(LC_TIME)
956 # define USE_LOCALE_TIME
958 # if !defined(NO_LOCALE_ADDRESS) && defined(LC_ADDRESS)
959 # define USE_LOCALE_ADDRESS
961 # if !defined(NO_LOCALE_IDENTIFICATION) && defined(LC_IDENTIFICATION)
962 # define USE_LOCALE_IDENTIFICATION
964 # if !defined(NO_LOCALE_MEASUREMENT) && defined(LC_MEASUREMENT)
965 # define USE_LOCALE_MEASUREMENT
967 # if !defined(NO_LOCALE_PAPER) && defined(LC_PAPER)
968 # define USE_LOCALE_PAPER
970 # if !defined(NO_LOCALE_TELEPHONE) && defined(LC_TELEPHONE)
971 # define USE_LOCALE_TELEPHONE
973 # if !defined(NO_LOCALE_SYNTAX) && defined(LC_SYNTAX)
974 # define USE_LOCALE_SYNTAX
976 # if !defined(NO_LOCALE_TOD) && defined(LC_TOD)
977 # define USE_LOCALE_TOD
980 /* XXX The next few defines are unfortunately duplicated in makedef.pl, and
981 * changes here MUST also be made there */
983 # if ! defined(HAS_SETLOCALE) && defined(HAS_POSIX_2008_LOCALE)
984 # define USE_POSIX_2008_LOCALE
985 # ifndef USE_THREAD_SAFE_LOCALE
986 # define USE_THREAD_SAFE_LOCALE
989 * -DUSE_THREAD_SAFE_LOCALE, will do so even
990 * on unthreaded builds */
991 # elif (defined(USE_ITHREADS) || defined(USE_THREAD_SAFE_LOCALE)) \
992 && ( defined(HAS_POSIX_2008_LOCALE) \
993 || (defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1400)) \
994 && ! defined(NO_THREAD_SAFE_LOCALE)
995 # ifndef USE_THREAD_SAFE_LOCALE
996 # define USE_THREAD_SAFE_LOCALE
998 # ifdef HAS_POSIX_2008_LOCALE
999 # define USE_POSIX_2008_LOCALE
1004 /* Microsoft documentation reads in the change log for VS 2015:
1005 * "The localeconv function declared in locale.h now works correctly when
1006 * per-thread locale is enabled. In previous versions of the library, this
1007 * function would return the lconv data for the global locale, not the
1010 #if defined(WIN32) && defined(USE_THREAD_SAFE_LOCALE) && _MSC_VER < 1900
1011 # define TS_W32_BROKEN_LOCALECONV
1017 # ifdef PARAM_NEEDS_TYPES
1018 # include <sys/types.h>
1020 # include <sys/param.h>
1023 /* On BSD-derived systems, <sys/param.h> defines BSD to a year-month
1024 value something like 199306. This may be useful if no more-specific
1025 feature test is available.
1033 /* Use all the "standard" definitions */
1036 /* If this causes problems, set i_unistd=undef in the hint file. */
1038 # if defined(__amigaos4__)
1039 # ifdef I_NETINET_IN
1040 # include <netinet/in.h>
1043 # include <unistd.h>
1044 # if defined(__amigaos4__)
1045 /* Under AmigaOS 4 newlib.library provides an environ. However using
1046 * it doesn't give us enough control over inheritance of variables by
1047 * subshells etc. so replace with custom version based on abc-shell
1049 extern char **myenviron;
1051 # define environ myenviron
1057 # include <sys/wait.h>
1060 #if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO)
1061 EXTERN_C int syscall(int, ...);
1064 #if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO)
1065 EXTERN_C int usleep(unsigned int);
1068 /* Macros for correct constant construction. These are in C99 <stdint.h>
1069 * (so they will not be available in strict C89 mode), but they are nice, so
1070 * let's define them if necessary.
1071 =for apidoc_section Integer configuration values
1072 =for apidoc Am|I16|INT16_C|number
1073 =for apidoc_item |I32|INT32_C|number
1074 =for apidoc_item |I64|INT64_C|number
1076 Returns a token the C compiler recognizes for the constant C<number> of the
1077 corresponding integer type on the machine.
1079 If the machine does not have a 64-bit type, C<INT64_C> is undefined.
1080 Use C<L</INTMAX_C>> to get the largest type available on the platform.
1082 =for apidoc Am|U16|UINT16_C|number
1083 =for apidoc_item |U32|UINT32_C|number
1084 =for apidoc_item |U64|UINT64_C|number
1086 Returns a token the C compiler recognizes for the constant C<number> of the
1087 corresponding unsigned integer type on the machine.
1089 If the machine does not have a 64-bit type, C<UINT64_C> is undefined.
1090 Use C<L</UINTMAX_C>> to get the largest type available on the platform.
1097 # define UINT16_C(x) ((U16_TYPE)x##U)
1099 # define UINT16_C(x) ((U16_TYPE)x##UL)
1105 # define UINT32_C(x) ((U32_TYPE)x##U)
1107 # define UINT32_C(x) ((U32_TYPE)x##UL)
1112 typedef intmax_t PERL_INTMAX_T;
1113 typedef uintmax_t PERL_UINTMAX_T;
1116 /* N.B. We use QUADKIND here instead of HAS_QUAD here, because that doesn't
1117 * actually mean what it has always been documented to mean (see RT #119753)
1118 * and is explicitly turned off outside of core with dire warnings about
1119 * removing the undef. */
1121 #if defined(QUADKIND)
1122 # undef PeRl_INT64_C
1123 # undef PeRl_UINT64_C
1124 /* Prefer the native integer types (int and long) over long long
1125 * (which is not C89) and Win32-specific __int64. */
1126 # if QUADKIND == QUAD_IS_INT && INTSIZE == 8
1127 # define PeRl_INT64_C(c) (c)
1128 # define PeRl_UINT64_C(c) CAT2(c,U)
1130 # if QUADKIND == QUAD_IS_LONG && LONGSIZE == 8
1131 # define PeRl_INT64_C(c) CAT2(c,L)
1132 # define PeRl_UINT64_C(c) CAT2(c,UL)
1134 # if QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LONG_LONG)
1135 # define PeRl_INT64_C(c) CAT2(c,LL)
1136 # define PeRl_UINT64_C(c) CAT2(c,ULL)
1138 # if QUADKIND == QUAD_IS___INT64
1139 # define PeRl_INT64_C(c) CAT2(c,I64)
1140 # define PeRl_UINT64_C(c) CAT2(c,UI64)
1142 # ifndef PeRl_INT64_C
1143 # define PeRl_INT64_C(c) ((I64)(c)) /* last resort */
1144 # define PeRl_UINT64_C(c) ((U64TYPE)(c))
1146 /* In OS X the INT64_C/UINT64_C are defined with LL/ULL, which will
1147 * not fly with C89-pedantic gcc, so let's undefine them first so that
1148 * we can redefine them with our native integer preferring versions. */
1149 # if defined(PERL_DARWIN) && defined(PERL_GCC_PEDANTIC)
1154 # define INT64_C(c) PeRl_INT64_C(c)
1157 # define UINT64_C(c) PeRl_UINT64_C(c)
1161 =for apidoc_section Integer configuration values
1162 =for apidoc Am||INTMAX_C|number
1163 Returns a token the C compiler recognizes for the constant C<number> of the
1164 widest integer type on the machine. For example, if the machine has C<long
1165 long>s, C<INTMAX_C(-1)> would yield
1169 See also, for example, C<L</INT32_C>>.
1171 Use L</IV> to declare variables of the maximum usable size on this platform.
1173 =for apidoc Am||UINTMAX_C|number
1174 Returns a token the C compiler recognizes for the constant C<number> of the
1175 widest unsigned integer type on the machine. For example, if the machine has
1176 C<long>s, C<UINTMAX_C(1)> would yield
1180 See also, for example, C<L</UINT32_C>>.
1182 Use L</UV> to declare variables of the maximum usable size on this platform.
1188 typedef I64TYPE PERL_INTMAX_T;
1189 typedef U64TYPE PERL_UINTMAX_T;
1192 # define INTMAX_C(c) INT64_C(c)
1195 # define UINTMAX_C(c) UINT64_C(c)
1198 #else /* below QUADKIND is undefined */
1200 /* Perl doesn't work on 16 bit systems, so must be 32 bit */
1202 typedef I32TYPE PERL_INTMAX_T;
1203 typedef U32TYPE PERL_UINTMAX_T;
1206 # define INTMAX_C(c) INT32_C(c)
1209 # define UINTMAX_C(c) UINT32_C(c)
1212 #endif /* no QUADKIND */
1216 /* byte-swapping functions for big-/little-endian conversion */
1217 # define _swab_16_(x) ((U16)( \
1218 (((U16)(x) & UINT16_C(0x00ff)) << 8) | \
1219 (((U16)(x) & UINT16_C(0xff00)) >> 8) ))
1221 # define _swab_32_(x) ((U32)( \
1222 (((U32)(x) & UINT32_C(0x000000ff)) << 24) | \
1223 (((U32)(x) & UINT32_C(0x0000ff00)) << 8) | \
1224 (((U32)(x) & UINT32_C(0x00ff0000)) >> 8) | \
1225 (((U32)(x) & UINT32_C(0xff000000)) >> 24) ))
1228 # define _swab_64_(x) ((U64)( \
1229 (((U64)(x) & UINT64_C(0x00000000000000ff)) << 56) | \
1230 (((U64)(x) & UINT64_C(0x000000000000ff00)) << 40) | \
1231 (((U64)(x) & UINT64_C(0x0000000000ff0000)) << 24) | \
1232 (((U64)(x) & UINT64_C(0x00000000ff000000)) << 8) | \
1233 (((U64)(x) & UINT64_C(0x000000ff00000000)) >> 8) | \
1234 (((U64)(x) & UINT64_C(0x0000ff0000000000)) >> 24) | \
1235 (((U64)(x) & UINT64_C(0x00ff000000000000)) >> 40) | \
1236 (((U64)(x) & UINT64_C(0xff00000000000000)) >> 56) ))
1239 /* The old value was hard coded at 1008. (4096-16) seems to be a bit faster,
1240 at least on FreeBSD. YMMV, so experiment. */
1241 #ifndef PERL_ARENA_SIZE
1242 #define PERL_ARENA_SIZE 4080
1245 /* Maximum level of recursion */
1246 #ifndef PERL_SUB_DEPTH_WARN
1247 #define PERL_SUB_DEPTH_WARN 100
1250 #endif /* PERL_CORE */
1252 /* Maximum number of args that may be passed to an OP_MULTICONCAT op.
1253 * It determines the size of local arrays in S_maybe_multiconcat() and
1256 #define PERL_MULTICONCAT_MAXARG 64
1258 /* The indexes of fields of a multiconcat aux struct.
1259 * The fixed fields are followed by nargs+1 const segment lengths,
1260 * and if utf8 and non-utf8 differ, a second nargs+1 set for utf8.
1263 #define PERL_MULTICONCAT_IX_NARGS 0 /* number of arguments */
1264 #define PERL_MULTICONCAT_IX_PLAIN_PV 1 /* non-utf8 constant string */
1265 #define PERL_MULTICONCAT_IX_PLAIN_LEN 2 /* non-utf8 constant string length */
1266 #define PERL_MULTICONCAT_IX_UTF8_PV 3 /* utf8 constant string */
1267 #define PERL_MULTICONCAT_IX_UTF8_LEN 4 /* utf8 constant string length */
1268 #define PERL_MULTICONCAT_IX_LENGTHS 5 /* first of nargs+1 const segment lens */
1269 #define PERL_MULTICONCAT_HEADER_SIZE 5 /* The number of fields of a
1270 multiconcat header */
1272 /* We no longer default to creating a new SV for GvSV.
1273 Do this before embed. */
1274 #ifndef PERL_CREATE_GVSV
1275 # ifndef PERL_DONT_CREATE_GVSV
1276 # define PERL_DONT_CREATE_GVSV
1280 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
1281 #define PERL_USES_PL_PIDSTATUS
1284 #if !defined(OS2) && !defined(WIN32) && !defined(DJGPP)
1285 #define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
1288 #define MEM_SIZE Size_t
1290 /* Round all values passed to malloc up, by default to a multiple of
1293 #ifndef PERL_STRLEN_ROUNDUP_QUANTUM
1294 #define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size
1297 /* sv_grow() will expand strings by at least a certain percentage of
1298 the previously *used* length to avoid excessive calls to realloc().
1299 The default is 25% of the current length.
1301 #ifndef PERL_STRLEN_EXPAND_SHIFT
1302 # define PERL_STRLEN_EXPAND_SHIFT 2
1305 /* This use of offsetof() requires /Zc:offsetof- for VS2017 (and presumably
1306 * onwards) when building Socket.xs, but we can just use a different definition
1307 * for STRUCT_OFFSET instead. */
1308 #if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1910
1309 # define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
1311 # include <stddef.h>
1312 # define STRUCT_OFFSET(s,m) offsetof(s,m)
1315 /* ptrdiff_t is C11, so undef it under pedantic builds. (Actually it is
1316 * in C89, but apparently there are platforms where it doesn't exist. See
1317 * thread beginning at http://nntp.perl.org/group/perl.perl5.porters/251541.)
1319 #ifdef PERL_GCC_PEDANTIC
1320 # undef HAS_PTRDIFF_T
1323 #ifdef HAS_PTRDIFF_T
1324 # define Ptrdiff_t ptrdiff_t
1326 # define Ptrdiff_t SSize_t
1329 # include <string.h>
1331 /* This comes after <stdlib.h> so we don't try to change the standard
1332 * library prototypes; we'll use our own in proto.h instead. */
1335 # ifdef PERL_POLLUTE_MALLOC
1336 # ifndef PERL_EXTMALLOC_DEF
1337 # define Perl_malloc malloc
1338 # define Perl_calloc calloc
1339 # define Perl_realloc realloc
1340 # define Perl_mfree free
1343 # define EMBEDMYMALLOC /* for compatibility */
1346 # define safemalloc Perl_malloc
1347 # define safecalloc Perl_calloc
1348 # define saferealloc Perl_realloc
1349 # define safefree Perl_mfree
1350 # define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \
1351 if (!TAINTING_get && MallocCfg_ptr[MallocCfg_cfg_env_read]) \
1354 # define CHECK_MALLOC_TOO_LATE_FOR(ch) \
1355 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch))
1356 # define panic_write2(s) write(2, s, strlen(s))
1357 # define CHECK_MALLOC_TAINT(newval) \
1358 CHECK_MALLOC_TOO_LATE_FOR_( \
1360 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\
1362 # define MALLOC_CHECK_TAINT(argc,argv,env) STMT_START { \
1363 if (doing_taint(argc,argv,env)) { \
1364 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \
1366 #else /* MYMALLOC */
1367 # define safemalloc safesysmalloc
1368 # define safecalloc safesyscalloc
1369 # define saferealloc safesysrealloc
1370 # define safefree safesysfree
1371 # define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0)
1372 # define CHECK_MALLOC_TAINT(newval) ((void)0)
1373 # define MALLOC_CHECK_TAINT(argc,argv,env)
1374 #endif /* MYMALLOC */
1376 /* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */
1377 #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)
1378 #define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "")
1379 #define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
1380 #define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
1383 # define memzero(d,l) memset(d,0,l)
1387 # include <netinet/in.h>
1391 # include <arpa/inet.h>
1395 # include <sys/stat.h>
1398 /* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO.
1399 This definition should ideally go into win32/win32.h, but S_IFIFO is
1400 used later here in perl.h before win32/win32.h is being included. */
1401 #if !defined(S_IFIFO) && defined(_S_IFIFO)
1402 # define S_IFIFO _S_IFIFO
1405 /* The stat macros for Unisoft System V/88 (and derivatives
1406 like UTekV) are broken, sometimes giving false positives. Undefine
1407 them here and let the code below set them to proper values.
1409 The ghs macro stands for GreenHills Software C-1.8.5 which
1410 is the C compiler for sysV88 and the various derivatives.
1411 This header file bug is corrected in gcc-2.5.8 and later versions.
1412 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
1414 #if defined(m88k) && defined(ghs)
1426 # ifdef I_SYS_TIME_KERNEL
1429 # include <sys/time.h>
1430 # ifdef I_SYS_TIME_KERNEL
1435 #if defined(HAS_TIMES) && defined(I_SYS_TIMES)
1436 # include <sys/times.h>
1441 #if defined(WIN32) && defined(PERL_IMPLICIT_SYS)
1442 # define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
1445 #if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */
1446 # include <sys/socket.h>
1447 # if defined(USE_SOCKS) && defined(I_SOCKS)
1448 # if !defined(INCLUDE_PROTOTYPES)
1449 # define INCLUDE_PROTOTYPES /* for <socks.h> */
1450 # define PERL_SOCKS_NEED_PROTOTYPES
1453 # ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
1454 # undef INCLUDE_PROTOTYPES
1455 # undef PERL_SOCKS_NEED_PROTOTYPES
1466 # include <net/errno.h>
1471 /* sockatmark() is so new (2001) that many places might have it hidden
1472 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required
1473 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */
1474 #if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO)
1475 # if defined(__THROW) && defined(__GLIBC__)
1476 int sockatmark(int) __THROW;
1478 int sockatmark(int);
1482 #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. */
1483 EXTERN_C int fchdir(int);
1484 EXTERN_C int flock(int, int);
1485 EXTERN_C int fseeko(FILE *, off_t, int);
1486 EXTERN_C off_t ftello(FILE *);
1489 #if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */
1490 EXTERN_C char *crypt(const char *, const char *);
1493 #if defined(__cplusplus) && defined(__CYGWIN__)
1494 EXTERN_C char *crypt(const char *, const char *);
1498 =for apidoc_section Errno
1500 =for apidoc m|void|SETERRNO|int errcode|int vmserrcode
1502 Set C<errno>, and on VMS set C<vaxc$errno>.
1504 =for apidoc mn|void|dSAVEDERRNO
1506 Declare variables needed to save C<errno> and any operating system
1507 specific error number.
1509 =for apidoc mn|void|dSAVE_ERRNO
1511 Declare variables needed to save C<errno> and any operating system
1512 specific error number, and save them for optional later restoration
1513 by C<RESTORE_ERRNO>.
1515 =for apidoc mn|void|SAVE_ERRNO
1517 Save C<errno> and any operating system specific error number for
1518 optional later restoration by C<RESTORE_ERRNO>. Requires
1519 C<dSAVEDERRNO> or C<dSAVE_ERRNO> in scope.
1521 =for apidoc mn|void|RESTORE_ERRNO
1523 Restore C<errno> and any operating system specific error number that
1524 was saved by C<dSAVE_ERRNO> or C<RESTORE_ERRNO>.
1530 # undef SETERRNO /* SOCKS might have defined this */
1534 # define SETERRNO(errcode,vmserrcode) \
1536 set_errno(errcode); \
1537 set_vaxc_errno(vmserrcode); \
1539 # define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno
1540 # define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno
1541 # define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno )
1542 # define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno)
1544 # define LIB_INVARG LIB$_INVARG
1545 # define RMS_DIR RMS$_DIR
1546 # define RMS_FAC RMS$_FAC
1547 # define RMS_FEX RMS$_FEX
1548 # define RMS_FNF RMS$_FNF
1549 # define RMS_IFI RMS$_IFI
1550 # define RMS_ISI RMS$_ISI
1551 # define RMS_PRV RMS$_PRV
1552 # define SS_ACCVIO SS$_ACCVIO
1553 # define SS_DEVOFFLINE SS$_DEVOFFLINE
1554 # define SS_IVCHAN SS$_IVCHAN
1555 # define SS_NORMAL SS$_NORMAL
1556 # define SS_NOPRIV SS$_NOPRIV
1557 # define SS_BUFFEROVF SS$_BUFFEROVF
1559 # define LIB_INVARG 0
1567 # define SS_ACCVIO 0
1568 # define SS_DEVOFFLINE 0
1569 # define SS_IVCHAN 0
1570 # define SS_NORMAL 0
1571 # define SS_NOPRIV 0
1572 # define SS_BUFFEROVF 0
1576 # define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno
1577 # define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError()
1578 # define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() )
1579 # define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) )
1583 # define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno
1584 # define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc
1585 # define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc )
1586 # define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno )
1590 # define SETERRNO(errcode,vmserrcode) (errno = (errcode))
1594 # define dSAVEDERRNO int saved_errno
1595 # define dSAVE_ERRNO int saved_errno = errno
1596 # define SAVE_ERRNO (saved_errno = errno)
1597 # define RESTORE_ERRNO (errno = saved_errno)
1601 =for apidoc_section Warning and Dieing
1603 =for apidoc Amn|SV *|ERRSV
1605 Returns the SV for C<$@>, creating it if needed.
1607 =for apidoc Am|void|CLEAR_ERRSV
1609 Clear the contents of C<$@>, setting it to the empty string.
1611 This replaces any read-only SV with a fresh SV and removes any magic.
1613 =for apidoc Am|void|SANE_ERRSV
1615 Clean up ERRSV so we can safely set it.
1617 This replaces any read-only SV with a fresh writable copy and removes
1623 #define ERRSV GvSVn(PL_errgv)
1625 /* contains inlined gv_add_by_type */
1626 #define CLEAR_ERRSV() STMT_START { \
1627 SV ** const svp = &GvSV(PL_errgv); \
1629 *svp = newSVpvs(""); \
1630 } else if (SvREADONLY(*svp)) { \
1631 SvREFCNT_dec_NN(*svp); \
1632 *svp = newSVpvs(""); \
1634 SV *const errsv = *svp; \
1636 SvPOK_only(errsv); \
1637 if (SvMAGICAL(errsv)) { \
1643 /* contains inlined gv_add_by_type */
1644 #define SANE_ERRSV() STMT_START { \
1645 SV ** const svp = &GvSV(PL_errgv); \
1647 *svp = newSVpvs(""); \
1648 } else if (SvREADONLY(*svp)) { \
1649 SV *dupsv = newSVsv(*svp); \
1650 SvREFCNT_dec_NN(*svp); \
1653 SV *const errsv = *svp; \
1654 if (SvMAGICAL(errsv)) { \
1662 # define DEFSV (0 + GvSVn(PL_defgv))
1663 # define DEFSV_set(sv) \
1664 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv))
1665 # define SAVE_DEFSV \
1667 save_gp(PL_defgv, 0), \
1668 GvINTRO_off(PL_defgv), \
1669 SAVEGENERICSV(GvSV(PL_defgv)), \
1670 GvSV(PL_defgv) = NULL \
1673 # define DEFSV GvSVn(PL_defgv)
1674 # define DEFSV_set(sv) (GvSV(PL_defgv) = (sv))
1675 # define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
1679 =for apidoc_section SV Handling
1680 =for apidoc Amn|SV *|DEFSV
1681 Returns the SV associated with C<$_>
1683 =for apidoc Am|void|DEFSV_set|SV * sv
1684 Associate C<sv> with C<$_>
1686 =for apidoc Amn|void|SAVE_DEFSV
1687 Localize C<$_>. See L<perlguts/Localizing changes>.
1693 extern int errno; /* ANSI allows errno to be an lvalue expr.
1694 * For example in multithreaded environments
1695 * something like this might happen:
1696 * extern int *_errno(void);
1697 * #define errno (*_errno()) */
1700 #define UNKNOWN_ERRNO_MSG "(unknown)"
1703 #define Strerror(e) strerror((e), vaxc$errno)
1705 #define Strerror(e) strerror(e)
1710 # include <sys/ioctl.h>
1714 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
1715 # ifdef HAS_SOCKETPAIR
1716 # undef HAS_SOCKETPAIR
1723 #ifndef HAS_SOCKETPAIR
1725 # define socketpair Perl_my_socketpair
1730 # define htoni htons
1731 # define ntohi ntohs
1733 # define htoni htonl
1734 # define ntohi ntohl
1737 /* Configure already sets Direntry_t */
1738 #if defined(I_DIRENT)
1739 # include <dirent.h>
1740 #elif defined(I_SYS_NDIR)
1741 # include <sys/ndir.h>
1742 #elif defined(I_SYS_DIR)
1743 # include <sys/dir.h>
1747 * The following gobbledygook brought to you on behalf of __STDC__.
1748 * (I could just use #ifndef __STDC__, but this is more bulletproof
1749 * in the face of half-implementations.)
1752 #if defined(I_SYSMODE)
1753 #include <sys/mode.h>
1758 # define S_IFMT _S_IFMT
1760 # define S_IFMT 0170000
1765 # define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
1769 # define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
1774 # define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
1776 # define S_ISBLK(m) (0)
1781 # define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
1786 # define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
1788 # define S_ISFIFO(m) (0)
1794 # define S_ISLNK(m) _S_ISLNK(m)
1795 # elif defined(_S_IFLNK)
1796 # define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
1797 # elif defined(S_IFLNK)
1798 # define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
1800 # define S_ISLNK(m) (0)
1806 # define S_ISSOCK(m) _S_ISSOCK(m)
1807 # elif defined(_S_IFSOCK)
1808 # define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
1809 # elif defined(S_IFSOCK)
1810 # define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
1812 # define S_ISSOCK(m) (0)
1818 # define S_IRUSR S_IREAD
1819 # define S_IWUSR S_IWRITE
1820 # define S_IXUSR S_IEXEC
1822 # define S_IRUSR 0400
1823 # define S_IWUSR 0200
1824 # define S_IXUSR 0100
1830 # define S_IRGRP (S_IRUSR>>3)
1831 # define S_IWGRP (S_IWUSR>>3)
1832 # define S_IXGRP (S_IXUSR>>3)
1834 # define S_IRGRP 0040
1835 # define S_IWGRP 0020
1836 # define S_IXGRP 0010
1842 # define S_IROTH (S_IRUSR>>6)
1843 # define S_IWOTH (S_IWUSR>>6)
1844 # define S_IXOTH (S_IXUSR>>6)
1846 # define S_IROTH 0040
1847 # define S_IWOTH 0020
1848 # define S_IXOTH 0010
1853 # define S_ISUID 04000
1857 # define S_ISGID 02000
1861 # define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
1865 # define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
1869 # define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
1872 /* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h>
1873 * which would get included through <sys/file.h >, but that is 3000
1874 * lines in the future. --jhi */
1876 #if !defined(S_IREAD) && !defined(__HAIKU__)
1877 # define S_IREAD S_IRUSR
1880 #if !defined(S_IWRITE) && !defined(__HAIKU__)
1881 # define S_IWRITE S_IWUSR
1885 # define S_IEXEC S_IXUSR
1888 #if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
1889 # define SLOPPYDIVIDE
1896 /* This used to be conditionally defined based on whether we had a sprintf()
1897 * that correctly returns the string length (as required by C89), but we no
1898 * longer need that. XS modules can (and do) use this name, so it must remain
1899 * a part of the API that's visible to modules.
1901 =for apidoc_section String Handling
1902 =for apidoc ATmD|int|my_sprintf|NN char *buffer|NN const char *pat|...
1904 Do NOT use this due to the possibility of overflowing C<buffer>. Instead use
1909 #define my_sprintf sprintf
1912 * If we have v?snprintf() and the C99 variadic macros, we can just
1913 * use just the v?snprintf(). It is nice to try to trap the buffer
1914 * overflow, however, so if we are DEBUGGING, and we cannot use the
1915 * gcc statement expressions, then use the function wrappers which try
1916 * to trap the overflow. If we can use the gcc statement expressions,
1917 * we can try that even with the version that uses the C99 variadic
1921 /* Note that we do not check against snprintf()/vsnprintf() returning
1922 * negative values because that is non-standard behaviour and we use
1923 * snprintf/vsnprintf only iff HAS_VSNPRINTF has been defined, and
1924 * that should be true only if the snprintf()/vsnprintf() are true
1925 * to the standard. */
1927 #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
1930 # define my_snprintf Perl_my_snprintf
1931 # define PERL_MY_SNPRINTF_GUARDED
1932 #elif defined(HAS_SNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
1933 # ifdef PERL_USE_GCC_BRACE_GROUPS
1934 # define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; })
1935 # define PERL_MY_SNPRINTF_GUARDED
1937 # define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__)
1940 # define my_snprintf Perl_my_snprintf
1941 # define PERL_MY_SNPRINTF_GUARDED
1944 /* There is no quadmath_vsnprintf, and therefore my_vsnprintf()
1945 * dies if called under USE_QUADMATH. */
1946 #if defined(HAS_VSNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
1947 # ifdef PERL_USE_GCC_BRACE_GROUPS
1948 # define my_vsnprintf(buffer, max, ...) ({ int len = vsnprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, vsnprintf); len; })
1949 # define PERL_MY_VSNPRINTF_GUARDED
1951 # define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__)
1954 # define my_vsnprintf Perl_my_vsnprintf
1955 # define PERL_MY_VSNPRINTF_GUARDED
1958 /* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD()
1959 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore
1960 * the result of my_snprintf() or my_vsnprintf(). (No, you should not
1961 * completely ignore it: otherwise you cannot know whether your output
1964 * int len = my_sprintf(buf, max, ...);
1965 * PERL_MY_SNPRINTF_POST_GUARD(len, max);
1967 * The trick is that in certain platforms [a] the my_sprintf() already
1968 * contains the sanity check, while in certain platforms [b] it needs
1969 * to be done as a separate step. The POST_GUARD is that step-- in [a]
1970 * platforms the POST_GUARD actually does nothing since the check has
1971 * already been done. Watch out for the max being the same in both calls.
1973 * If you actually use the snprintf/vsnprintf return value already,
1974 * you assumedly are checking its validity somehow. But you can
1975 * insert the POST_GUARD() also in that case. */
1977 #ifndef PERL_MY_SNPRINTF_GUARDED
1978 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf)
1980 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1983 #ifndef PERL_MY_VSNPRINTF_GUARDED
1984 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf)
1986 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1990 # define my_strlcat strlcat
1993 #if defined(PERL_CORE) || defined(PERL_EXT)
1995 # define my_memrchr memrchr
1997 # define my_memrchr S_my_memrchr
2002 # define my_strlcpy strlcpy
2006 # define my_strnlen strnlen
2010 The IV type is supposed to be long enough to hold any integral
2012 --Andy Dougherty August 1996
2018 #if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
2019 # if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
2020 # define IV_MAX ((IV)INT64_MAX)
2021 # define IV_MIN ((IV)INT64_MIN)
2022 # define UV_MAX ((UV)UINT64_MAX)
2024 # define UINT64_MIN 0
2026 # define UV_MIN ((UV)UINT64_MIN)
2028 # define IV_MAX PERL_QUAD_MAX
2029 # define IV_MIN PERL_QUAD_MIN
2030 # define UV_MAX PERL_UQUAD_MAX
2031 # define UV_MIN PERL_UQUAD_MIN
2036 # if defined(INT32_MAX) && IVSIZE == 4
2037 # define IV_MAX ((IV)INT32_MAX)
2038 # define IV_MIN ((IV)INT32_MIN)
2039 # ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
2040 # define UV_MAX ((UV)UINT32_MAX)
2042 # define UV_MAX ((UV)4294967295U)
2045 # define UINT32_MIN 0
2047 # define UV_MIN ((UV)UINT32_MIN)
2049 # define IV_MAX PERL_LONG_MAX
2050 # define IV_MIN PERL_LONG_MIN
2051 # define UV_MAX PERL_ULONG_MAX
2052 # define UV_MIN PERL_ULONG_MIN
2063 #if !defined(PERL_CORE)
2064 /* We think that removing this decade-old undef this will cause too much
2065 breakage on CPAN for too little gain. (See RT #119753)
2066 However, we do need HAS_QUAD in the core for use by the drand48 code. */
2072 #define Size_t_MAX (~(Size_t)0)
2073 #define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1)
2075 #define IV_DIG (BIT_DIGITS(IVSIZE * 8))
2076 #define UV_DIG (BIT_DIGITS(UVSIZE * 8))
2078 #ifndef NO_PERL_PRESERVE_IVUV
2079 #define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */
2083 * The macros INT2PTR and NUM2PTR are (despite their names)
2084 * bi-directional: they will convert int/float to or from pointers.
2085 * However the conversion to int/float are named explicitly:
2086 * PTR2IV, PTR2UV, PTR2NV.
2088 * For int conversions we do not need two casts if pointers are
2089 * the same size as IV and UV. Otherwise we need an explicit
2090 * cast (PTRV) to avoid compiler warnings.
2092 * These are mentioned in perlguts
2094 #if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
2096 # define INT2PTR(any,d) (any)(d)
2097 #elif PTRSIZE == LONGSIZE
2098 # define PTRV unsigned long
2099 # define PTR2ul(p) (unsigned long)(p)
2101 # define PTRV unsigned
2105 # define INT2PTR(any,d) (any)(PTRV)(d)
2109 # define PTR2ul(p) INT2PTR(unsigned long,p)
2112 #define NUM2PTR(any,d) (any)(PTRV)(d)
2113 #define PTR2IV(p) INT2PTR(IV,p)
2114 #define PTR2UV(p) INT2PTR(UV,p)
2115 #define PTR2NV(p) NUM2PTR(NV,p)
2116 #define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */
2118 /* According to strict ANSI C89 one cannot freely cast between
2119 * data pointers and function (code) pointers. There are at least
2120 * two ways around this. One (used below) is to do two casts,
2121 * first the other pointer to an (unsigned) integer, and then
2122 * the integer to the other pointer. The other way would be
2123 * to use unions to "overlay" the pointers. For an example of
2124 * the latter technique, see union dirpu in struct xpvio in sv.h.
2125 * The only feasible use is probably temporarily storing
2126 * function pointers in a data pointer (such as a void pointer). */
2128 #define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */
2129 #define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */
2131 #ifdef USE_LONG_DOUBLE
2132 # if LONG_DOUBLESIZE == DOUBLESIZE
2133 # define LONG_DOUBLE_EQUALS_DOUBLE
2134 # undef USE_LONG_DOUBLE /* Ouch! */
2138 /* The following is all to get LDBL_DIG, in order to pick a nice
2139 default value for printing floating point numbers in Gconvert.
2142 #ifndef HAS_LDBL_DIG
2143 # if LONG_DOUBLESIZE == 10
2144 # define LDBL_DIG 18 /* assume IEEE */
2145 # elif LONG_DOUBLESIZE == 12
2146 # define LDBL_DIG 18 /* gcc? */
2147 # elif LONG_DOUBLESIZE == 16
2148 # define LDBL_DIG 33 /* assume IEEE */
2149 # elif LONG_DOUBLESIZE == DOUBLESIZE
2150 # define LDBL_DIG DBL_DIG /* bummer */
2157 # include <ieeefp.h>
2160 #if defined(__DECC) && defined(__osf__)
2161 /* Also Tru64 cc has broken NaN comparisons. */
2162 # define NAN_COMPARE_BROKEN
2165 # define NAN_COMPARE_BROKEN
2168 #ifdef USE_LONG_DOUBLE
2170 # include <sunmath.h>
2172 # if defined(LDBL_DIG)
2173 # define NV_DIG LDBL_DIG
2174 # ifdef LDBL_MANT_DIG
2175 # define NV_MANT_DIG LDBL_MANT_DIG
2178 # define NV_MIN LDBL_MIN
2181 # define NV_MAX LDBL_MAX
2183 # ifdef LDBL_MIN_EXP
2184 # define NV_MIN_EXP LDBL_MIN_EXP
2186 # ifdef LDBL_MAX_EXP
2187 # define NV_MAX_EXP LDBL_MAX_EXP
2189 # ifdef LDBL_MIN_10_EXP
2190 # define NV_MIN_10_EXP LDBL_MIN_10_EXP
2192 # ifdef LDBL_MAX_10_EXP
2193 # define NV_MAX_10_EXP LDBL_MAX_10_EXP
2195 # ifdef LDBL_EPSILON
2196 # define NV_EPSILON LDBL_EPSILON
2199 # define NV_MAX LDBL_MAX
2200 /* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */
2201 # elif defined(HUGE_VALL)
2202 # define NV_MAX HUGE_VALL
2205 # if defined(HAS_SQRTL)
2206 # define Perl_acos acosl
2207 # define Perl_asin asinl
2208 # define Perl_atan atanl
2209 # define Perl_atan2 atan2l
2210 # define Perl_ceil ceill
2211 # define Perl_cos cosl
2212 # define Perl_cosh coshl
2213 # define Perl_exp expl
2214 /* no Perl_fabs, but there's PERL_ABS */
2215 # define Perl_floor floorl
2216 # define Perl_fmod fmodl
2217 # define Perl_log logl
2218 # define Perl_log10 log10l
2219 # define Perl_pow powl
2220 # define Perl_sin sinl
2221 # define Perl_sinh sinhl
2222 # define Perl_sqrt sqrtl
2223 # define Perl_tan tanl
2224 # define Perl_tanh tanhl
2226 /* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */
2229 # define Perl_modf(x,y) modfl(x,y)
2230 /* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no
2231 prototype in <math.h> */
2232 # ifndef HAS_MODFL_PROTO
2233 EXTERN_C long double modfl(long double, long double *);
2235 # elif (defined(HAS_TRUNCL) || defined(HAS_AINTL)) && defined(HAS_COPYSIGNL)
2236 extern long double Perl_my_modfl(long double x, long double *ip);
2237 # define Perl_modf(x,y) Perl_my_modfl(x,y)
2242 # define Perl_frexp(x,y) frexpl(x,y)
2243 # elif defined(HAS_ILOGBL) && defined(HAS_SCALBNL)
2244 extern long double Perl_my_frexpl(long double x, int *e);
2245 # define Perl_frexp(x,y) Perl_my_frexpl(x,y)
2250 # define Perl_ldexp(x, y) ldexpl(x,y)
2251 # elif defined(HAS_SCALBNL) && FLT_RADIX == 2
2252 # define Perl_ldexp(x,y) scalbnl(x,y)
2256 # if defined(HAS_ISNANL) && !(defined(isnan) && defined(HAS_C99))
2257 # define Perl_isnan(x) isnanl(x)
2258 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2259 # define Perl_isnan(x) isnan(x)
2263 # if defined(HAS_ISINFL) && !(defined(isinf) && defined(HAS_C99))
2264 # define Perl_isinf(x) isinfl(x)
2265 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2266 # define Perl_isinf(x) isinf(x)
2267 # elif defined(LDBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2268 # define Perl_isinf(x) ((x) > LDBL_MAX || (x) < -LDBL_MAX)
2271 # ifndef Perl_isfinite
2272 # define Perl_isfinite(x) Perl_isfinitel(x)
2274 #elif defined(USE_QUADMATH) && defined(I_QUADMATH)
2275 # include <quadmath.h>
2276 # define NV_DIG FLT128_DIG
2277 # define NV_MANT_DIG FLT128_MANT_DIG
2278 # define NV_MIN FLT128_MIN
2279 # define NV_MAX FLT128_MAX
2280 # define NV_MIN_EXP FLT128_MIN_EXP
2281 # define NV_MAX_EXP FLT128_MAX_EXP
2282 # define NV_EPSILON FLT128_EPSILON
2283 # define NV_MIN_10_EXP FLT128_MIN_10_EXP
2284 # define NV_MAX_10_EXP FLT128_MAX_10_EXP
2285 # define Perl_acos acosq
2286 # define Perl_asin asinq
2287 # define Perl_atan atanq
2288 # define Perl_atan2 atan2q
2289 # define Perl_ceil ceilq
2290 # define Perl_cos cosq
2291 # define Perl_cosh coshq
2292 # define Perl_exp expq
2293 /* no Perl_fabs, but there's PERL_ABS */
2294 # define Perl_floor floorq
2295 # define Perl_fmod fmodq
2296 # define Perl_log logq
2297 # define Perl_log10 log10q
2298 # define Perl_signbit signbitq
2299 # define Perl_pow powq
2300 # define Perl_sin sinq
2301 # define Perl_sinh sinhq
2302 # define Perl_sqrt sqrtq
2303 # define Perl_tan tanq
2304 # define Perl_tanh tanhq
2305 # define Perl_modf(x,y) modfq(x,y)
2306 # define Perl_frexp(x,y) frexpq(x,y)
2307 # define Perl_ldexp(x, y) ldexpq(x,y)
2308 # define Perl_isinf(x) isinfq(x)
2309 # define Perl_isnan(x) isnanq(x)
2310 # define Perl_isfinite(x) !(isnanq(x) || isinfq(x))
2311 # define Perl_fp_class(x) ((x) == 0.0Q ? 0 : isinfq(x) ? 3 : isnanq(x) ? 4 : PERL_ABS(x) < FLT128_MIN ? 2 : 1)
2312 # define Perl_fp_class_inf(x) (Perl_fp_class(x) == 3)
2313 # define Perl_fp_class_nan(x) (Perl_fp_class(x) == 4)
2314 # define Perl_fp_class_norm(x) (Perl_fp_class(x) == 1)
2315 # define Perl_fp_class_denorm(x) (Perl_fp_class(x) == 2)
2316 # define Perl_fp_class_zero(x) (Perl_fp_class(x) == 0)
2318 # define NV_DIG DBL_DIG
2319 # define NV_MANT_DIG DBL_MANT_DIG
2320 # define NV_MIN DBL_MIN
2321 # define NV_MAX DBL_MAX
2322 # define NV_MIN_EXP DBL_MIN_EXP
2323 # define NV_MAX_EXP DBL_MAX_EXP
2324 # define NV_MIN_10_EXP DBL_MIN_10_EXP
2325 # define NV_MAX_10_EXP DBL_MAX_10_EXP
2326 # define NV_EPSILON DBL_EPSILON
2327 # define NV_MAX DBL_MAX
2328 # define NV_MIN DBL_MIN
2330 /* These math interfaces are C89. */
2331 # define Perl_acos acos
2332 # define Perl_asin asin
2333 # define Perl_atan atan
2334 # define Perl_atan2 atan2
2335 # define Perl_ceil ceil
2336 # define Perl_cos cos
2337 # define Perl_cosh cosh
2338 # define Perl_exp exp
2339 /* no Perl_fabs, but there's PERL_ABS */
2340 # define Perl_floor floor
2341 # define Perl_fmod fmod
2342 # define Perl_log log
2343 # define Perl_log10 log10
2344 # define Perl_pow pow
2345 # define Perl_sin sin
2346 # define Perl_sinh sinh
2347 # define Perl_sqrt sqrt
2348 # define Perl_tan tan
2349 # define Perl_tanh tanh
2351 # define Perl_modf(x,y) modf(x,y)
2352 # define Perl_frexp(x,y) frexp(x,y)
2353 # define Perl_ldexp(x,y) ldexp(x,y)
2357 # define Perl_isnan(x) isnan(x)
2361 # if defined(HAS_ISINF)
2362 # define Perl_isinf(x) isinf(x)
2363 # elif defined(DBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2364 # define Perl_isinf(x) ((x) > DBL_MAX || (x) < -DBL_MAX)
2367 # ifndef Perl_isfinite
2368 # ifdef HAS_ISFINITE
2369 # define Perl_isfinite(x) isfinite(x)
2370 # elif defined(HAS_FINITE)
2371 # define Perl_isfinite(x) finite(x)
2376 /* fpclassify(): C99. It is supposed to be a macro that switches on
2377 * the sizeof() of its argument, so there's no need for e.g. fpclassifyl().*/
2378 #if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
2380 # if defined(FP_INFINITE) && defined(FP_NAN)
2381 # define Perl_fp_class(x) fpclassify(x)
2382 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2383 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2384 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2385 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2386 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2387 # elif defined(FP_PLUS_INF) && defined(FP_QNAN)
2388 /* Some versions of HP-UX (10.20) have (only) fpclassify() but which is
2389 * actually not the C99 fpclassify, with its own set of return defines. */
2390 # define Perl_fp_class(x) fpclassify(x)
2391 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2392 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2393 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2394 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2395 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2396 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2397 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2398 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2399 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2400 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2402 # undef Perl_fp_class /* Unknown set of defines */
2406 /* fp_classify(): Legacy: VMS, maybe Unicos? The values, however,
2407 * are identical to the C99 fpclassify(). */
2408 #if !defined(Perl_fp_class) && defined(HAS_FP_CLASSIFY)
2411 /* FP_INFINITE and others are here rather than in math.h as C99 stipulates */
2413 /* oh, and the isnormal macro has a typo in it! */
2415 # define isnormal(x) Perl_fp_class_norm(x)
2417 # if defined(FP_INFINITE) && defined(FP_NAN)
2418 # define Perl_fp_class(x) fp_classify(x)
2419 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2420 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2421 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2422 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2423 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2425 # undef Perl_fp_class /* Unknown set of defines */
2429 /* Feel free to check with me for the SGI manpages, SGI testing,
2430 * etcetera, if you want to try getting this to work with IRIX.
2432 * - Allen <allens@cpan.org> */
2434 /* fpclass(): SysV, at least Solaris and some versions of IRIX. */
2435 #if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
2436 /* Solaris and IRIX have fpclass/fpclassl, but they are using
2437 * an enum typedef, not cpp symbols, and Configure doesn't detect that.
2438 * Define some symbols also as cpp symbols so we can detect them. */
2439 # if defined(__sun) || defined(__sgi) /* XXX Configure test instead */
2440 # define FP_PINF FP_PINF
2441 # define FP_QNAN FP_QNAN
2445 # include <ieeefp.h>
2450 # if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
2451 # define Perl_fp_class(x) fpclassl(x)
2453 # define Perl_fp_class(x) fpclass(x)
2455 # if defined(FP_CLASS_PINF) && defined(FP_CLASS_SNAN)
2456 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
2457 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
2458 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
2459 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
2460 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
2461 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
2462 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
2463 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
2464 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
2465 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
2466 # elif defined(FP_PINF) && defined(FP_QNAN)
2467 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2468 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2469 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NINF)
2470 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PINF)
2471 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NNORM)
2472 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PNORM)
2473 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NDENORM)
2474 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PDENORM)
2475 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NZERO)
2476 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PZERO)
2478 # undef Perl_fp_class /* Unknown set of defines */
2482 /* fp_class(): Legacy: at least Tru64, some versions of IRIX. */
2483 #if !defined(Perl_fp_class) && (defined(HAS_FP_CLASS)||defined(HAS_FP_CLASSL))
2485 # if !defined(FP_SNAN) && defined(I_FP_CLASS)
2486 # include <fp_class.h>
2488 # if defined(FP_POS_INF) && defined(FP_QNAN)
2489 # ifdef __sgi /* XXX Configure test instead */
2490 # ifdef USE_LONG_DOUBLE
2491 # define Perl_fp_class(x) fp_class_l(x)
2493 # define Perl_fp_class(x) fp_class_d(x)
2496 # if defined(USE_LONG_DOUBLE) && defined(HAS_FP_CLASSL)
2497 # define Perl_fp_class(x) fp_classl(x)
2499 # define Perl_fp_class(x) fp_class(x)
2502 # if defined(FP_POS_INF) && defined(FP_QNAN)
2503 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2504 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2505 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NEG_INF)
2506 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_POS_INF)
2507 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NEG_NORM)
2508 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_POS_NORM)
2509 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NEG_DENORM)
2510 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_POS_DENORM)
2511 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NEG_ZERO)
2512 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_POS_ZERO)
2514 # undef Perl_fp_class /* Unknown set of defines */
2519 /* class(), _class(): Legacy: AIX. */
2520 #if !defined(Perl_fp_class) && defined(HAS_CLASS)
2522 # if defined(FP_PLUS_NORM) && defined(FP_PLUS_INF)
2524 # define Perl_fp_class(x) class(x)
2526 # define Perl_fp_class(x) _class(x)
2528 # if defined(FP_PLUS_INF) && defined(FP_NANQ)
2529 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
2530 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
2531 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2532 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2533 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2534 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2535 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2536 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2537 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2538 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2540 # undef Perl_fp_class /* Unknown set of defines */
2545 /* Win32: _fpclass(), _isnan(), _finite(). */
2548 # define Perl_isnan(x) _isnan(x)
2550 # ifndef Perl_isfinite
2551 # define Perl_isfinite(x) _finite(x)
2553 # ifndef Perl_fp_class_snan
2554 /* No simple way to #define Perl_fp_class because _fpclass()
2555 * returns a set of bits. */
2556 # define Perl_fp_class_snan(x) (_fpclass(x) & _FPCLASS_SNAN)
2557 # define Perl_fp_class_qnan(x) (_fpclass(x) & _FPCLASS_QNAN)
2558 # define Perl_fp_class_nan(x) (_fpclass(x) & (_FPCLASS_SNAN|_FPCLASS_QNAN))
2559 # define Perl_fp_class_ninf(x) (_fpclass(x) & _FPCLASS_NINF))
2560 # define Perl_fp_class_pinf(x) (_fpclass(x) & _FPCLASS_PINF))
2561 # define Perl_fp_class_inf(x) (_fpclass(x) & (_FPCLASS_NINF|_FPCLASS_PINF))
2562 # define Perl_fp_class_nnorm(x) (_fpclass(x) & _FPCLASS_NN)
2563 # define Perl_fp_class_pnorm(x) (_fpclass(x) & _FPCLASS_PN)
2564 # define Perl_fp_class_norm(x) (_fpclass(x) & (_FPCLASS_NN|_FPCLASS_PN))
2565 # define Perl_fp_class_ndenorm(x) (_fpclass(x) & _FPCLASS_ND)
2566 # define Perl_fp_class_pdenorm(x) (_fpclass(x) & _FPCLASS_PD)
2567 # define Perl_fp_class_denorm(x) (_fpclass(x) & (_FPCLASS_ND|_FPCLASS_PD))
2568 # define Perl_fp_class_nzero(x) (_fpclass(x) & _FPCLASS_NZ)
2569 # define Perl_fp_class_pzero(x) (_fpclass(x) & _FPCLASS_PZ)
2570 # define Perl_fp_class_zero(x) (_fpclass(x) & (_FPCLASS_NZ|_FPCLASS_PZ))
2574 #if !defined(Perl_fp_class_inf) && \
2575 defined(Perl_fp_class_pinf) && defined(Perl_fp_class_ninf)
2576 # define Perl_fp_class_inf(x) \
2577 (Perl_fp_class_pinf(x) || Perl_fp_class_ninf(x))
2580 #if !defined(Perl_fp_class_nan) && \
2581 defined(Perl_fp_class_snan) && defined(Perl_fp_class_qnan)
2582 # define Perl_fp_class_nan(x) \
2583 (Perl_fp_class_snan(x) || Perl_fp_class_qnan(x))
2586 #if !defined(Perl_fp_class_zero) && \
2587 defined(Perl_fp_class_pzero) && defined(Perl_fp_class_nzero)
2588 # define Perl_fp_class_zero(x) \
2589 (Perl_fp_class_pzero(x) || Perl_fp_class_nzero(x))
2592 #if !defined(Perl_fp_class_norm) && \
2593 defined(Perl_fp_class_pnorm) && defined(Perl_fp_class_nnorm)
2594 # define Perl_fp_class_norm(x) \
2595 (Perl_fp_class_pnorm(x) || Perl_fp_class_nnorm(x))
2598 #if !defined(Perl_fp_class_denorm) && \
2599 defined(Perl_fp_class_pdenorm) && defined(Perl_fp_class_ndenorm)
2600 # define Perl_fp_class_denorm(x) \
2601 (Perl_fp_class_pdenorm(x) || Perl_fp_class_ndenorm(x))
2605 # ifdef Perl_fp_class_nan
2606 # define Perl_isnan(x) Perl_fp_class_nan(x)
2607 # elif defined(HAS_UNORDERED)
2608 # define Perl_isnan(x) unordered((x), 0.0)
2610 # define Perl_isnan(x) ((x)!=(x))
2615 # ifdef Perl_fp_class_inf
2616 # define Perl_isinf(x) Perl_fp_class_inf(x)
2620 #ifndef Perl_isfinite
2621 # if defined(HAS_ISFINITE) && !defined(isfinite)
2622 # define Perl_isfinite(x) isfinite((double)(x))
2623 # elif defined(HAS_FINITE)
2624 # define Perl_isfinite(x) finite((double)(x))
2625 # elif defined(Perl_fp_class_finite)
2626 # define Perl_isfinite(x) Perl_fp_class_finite(x)
2628 /* For the infinities the multiplication returns nan,
2629 * for the nan the multiplication also returns nan,
2630 * for everything else (that is, finite) zero should be returned. */
2631 # define Perl_isfinite(x) (((x) * 0) == 0)
2636 # if defined(Perl_isfinite) && defined(Perl_isnan)
2637 # define Perl_isinf(x) !(Perl_isfinite(x)||Perl_isnan(x))
2641 /* We need Perl_isfinitel (ends with ell) (if available) even when
2642 * not USE_LONG_DOUBLE because the printf code (sv_catpvfn_flags)
2644 #if defined(HAS_LONG_DOUBLE) && !defined(Perl_isfinitel)
2645 /* If isfinite() is a macro and looks like we have C99,
2646 * we assume it's the type-aware C99 isfinite(). */
2647 # if defined(HAS_ISFINITE) && defined(isfinite) && defined(HAS_C99)
2648 # define Perl_isfinitel(x) isfinite(x)
2649 # elif defined(HAS_ISFINITEL)
2650 # define Perl_isfinitel(x) isfinitel(x)
2651 # elif defined(HAS_FINITEL)
2652 # define Perl_isfinitel(x) finitel(x)
2653 # elif defined(HAS_INFL) && defined(HAS_NANL)
2654 # define Perl_isfinitel(x) !(isinfl(x)||isnanl(x))
2656 # define Perl_isfinitel(x) ((x) * 0 == 0) /* See Perl_isfinite. */
2660 /* The default is to use Perl's own atof() implementation (in numeric.c).
2661 * Usually that is the one to use but for some platforms (e.g. UNICOS)
2662 * it is however best to use the native implementation of atof.
2663 * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
2664 * Some good tests to try out with either setting are t/base/num.t,
2665 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles
2666 * you may need to be using a different function than atof! */
2668 #ifndef USE_PERL_ATOF
2670 # define USE_PERL_ATOF
2673 # if USE_PERL_ATOF == 0
2674 # undef USE_PERL_ATOF
2678 #ifdef USE_PERL_ATOF
2679 # define Perl_atof(s) Perl_my_atof(s)
2680 # define Perl_atof2(s, n) Perl_my_atof3(aTHX_ (s), &(n), 0)
2682 # define Perl_atof(s) (NV)atof(s)
2683 # define Perl_atof2(s, n) ((n) = atof(s))
2685 #define my_atof2(a,b) my_atof3(a,b,0)
2688 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
2689 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
2690 * depending on local options. Until Configure detects this (or at least
2691 * detects whether the "signed" keyword is available) the CHAR ranges
2692 * will not be included. UCHAR functions normally.
2696 #define PERL_UCHAR_MIN ((unsigned char)0)
2697 #define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
2699 #define PERL_USHORT_MIN ((unsigned short)0)
2700 #define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
2702 #define PERL_SHORT_MAX ((short)SHRT_MAX)
2703 #define PERL_SHORT_MIN ((short)SHRT_MIN)
2705 #define PERL_UINT_MAX ((unsigned int)UINT_MAX)
2706 #define PERL_UINT_MIN ((unsigned int)0)
2708 #define PERL_INT_MAX ((int)INT_MAX)
2709 #define PERL_INT_MIN ((int)INT_MIN)
2711 #define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
2712 #define PERL_ULONG_MIN ((unsigned long)0L)
2714 #define PERL_LONG_MAX ((long)LONG_MAX)
2715 #define PERL_LONG_MIN ((long)LONG_MIN)
2718 # define PERL_UQUAD_MAX (~(UV)0)
2719 # define PERL_UQUAD_MIN ((UV)0)
2720 # define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
2721 # define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
2725 =for apidoc_section Integer configuration values
2727 =for apidoc AmnU||PERL_INT_MAX
2728 =for apidoc_item ||PERL_INT_MIN
2729 =for apidoc_item ||PERL_LONG_MAX
2730 =for apidoc_item ||PERL_LONG_MIN
2731 =for apidoc_item ||PERL_SHORT_MAX
2732 =for apidoc_item ||PERL_SHORT_MIN
2733 =for apidoc_item ||PERL_UCHAR_MAX
2734 =for apidoc_item ||PERL_UCHAR_MIN
2735 =for apidoc_item ||PERL_UINT_MAX
2736 =for apidoc_item ||PERL_UINT_MIN
2737 =for apidoc_item ||PERL_ULONG_MAX
2738 =for apidoc_item ||PERL_ULONG_MIN
2739 =for apidoc_item ||PERL_USHORT_MAX
2740 =for apidoc_item ||PERL_USHORT_MIN
2741 =for apidoc_item ||PERL_QUAD_MAX
2742 =for apidoc_item ||PERL_QUAD_MIN
2743 =for apidoc_item ||PERL_UQUAD_MAX
2744 =for apidoc_item ||PERL_UQUAD_MIN
2746 These give the largest and smallest number representable in the current
2747 platform in variables of the corresponding types.
2749 For signed types, the smallest representable number is the most negative
2750 number, the one furthest away from zero.
2752 For C99 and later compilers, these correspond to things like C<INT_MAX>, which
2753 are available to the C code. But these constants, furnished by Perl,
2754 allow code compiled on earlier compilers to portably have access to the same
2761 typedef MEM_SIZE STRLEN;
2763 typedef struct op OP;
2764 typedef struct cop COP;
2765 typedef struct unop UNOP;
2766 typedef struct unop_aux UNOP_AUX;
2767 typedef struct binop BINOP;
2768 typedef struct listop LISTOP;
2769 typedef struct logop LOGOP;
2770 typedef struct pmop PMOP;
2771 typedef struct svop SVOP;
2772 typedef struct padop PADOP;
2773 typedef struct pvop PVOP;
2774 typedef struct loop LOOP;
2775 typedef struct methop METHOP;
2778 typedef struct opslab OPSLAB;
2779 typedef struct opslot OPSLOT;
2782 typedef struct block_hooks BHK;
2783 typedef struct custom_op XOP;
2785 typedef struct interpreter PerlInterpreter;
2787 /* SGI's <sys/sema.h> has struct sv */
2789 # define STRUCT_SV perl_sv
2791 # define STRUCT_SV sv
2793 typedef struct STRUCT_SV SV;
2794 typedef struct av AV;
2795 typedef struct hv HV;
2796 typedef struct cv CV;
2797 typedef struct p5rx REGEXP;
2798 typedef struct gp GP;
2799 typedef struct gv GV;
2800 typedef struct io IO;
2801 typedef struct context PERL_CONTEXT;
2802 typedef struct block BLOCK;
2804 typedef struct magic MAGIC;
2805 typedef struct xpv XPV;
2806 typedef struct xpviv XPVIV;
2807 typedef struct xpvuv XPVUV;
2808 typedef struct xpvnv XPVNV;
2809 typedef struct xpvmg XPVMG;
2810 typedef struct xpvlv XPVLV;
2811 typedef struct xpvinvlist XINVLIST;
2812 typedef struct xpvav XPVAV;
2813 typedef struct xpvhv XPVHV;
2814 typedef struct xpvgv XPVGV;
2815 typedef struct xpvcv XPVCV;
2816 typedef struct xpvbm XPVBM;
2817 typedef struct xpvfm XPVFM;
2818 typedef struct xpvio XPVIO;
2819 typedef struct mgvtbl MGVTBL;
2820 typedef union any ANY;
2821 typedef struct ptr_tbl_ent PTR_TBL_ENT_t;
2822 typedef struct ptr_tbl PTR_TBL_t;
2823 typedef struct clone_params CLONE_PARAMS;
2825 /* a pad is currently just an AV; but that might change,
2826 * so hide the type. */
2827 typedef struct padlist PADLIST;
2829 typedef struct padnamelist PADNAMELIST;
2830 typedef struct padname PADNAME;
2832 /* always enable PERL_OP_PARENT */
2833 #if !defined(PERL_OP_PARENT)
2834 # define PERL_OP_PARENT
2837 /* enable PERL_COPY_ON_WRITE by default */
2838 #if !defined(PERL_COPY_ON_WRITE) && !defined(PERL_NO_COW)
2839 # define PERL_COPY_ON_WRITE
2842 #ifdef PERL_COPY_ON_WRITE
2843 # define PERL_ANY_COW
2845 # define PERL_SAWAMPERSAND
2848 #if defined(PERL_DEBUG_READONLY_OPS) && !defined(USE_ITHREADS)
2849 # error PERL_DEBUG_READONLY_OPS only works with ithreads
2853 #include "charclass_invlists.h"
2855 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO)
2856 # if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO)
2857 # define USE_64_BIT_RAWIO /* implicit */
2861 /* Notice the use of HAS_FSEEKO: now we are obligated to always use
2862 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself,
2863 * however, because operating systems like to do that themself. */
2866 # define FSEEKSIZE LSEEKSIZE
2868 # define FSEEKSIZE LONGSIZE
2872 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO)
2873 # if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO)
2874 # define USE_64_BIT_STDIO /* implicit */
2878 #ifdef USE_64_BIT_RAWIO
2881 # define Off_t off64_t
2883 # define LSEEKSIZE 8
2885 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2886 * will trigger defines like the ones below. Some 64-bit environments,
2887 * however, do not. Therefore we have to explicitly mix and match. */
2888 # if defined(USE_OPEN64)
2889 # define open open64
2891 # if defined(USE_LSEEK64)
2892 # define lseek lseek64
2894 # if defined(USE_LLSEEK)
2895 # define lseek llseek
2898 # if defined(USE_STAT64)
2899 # define stat stat64
2901 # if defined(USE_FSTAT64)
2902 # define fstat fstat64
2904 # if defined(USE_LSTAT64)
2905 # define lstat lstat64
2907 # if defined(USE_FLOCK64)
2908 # define flock flock64
2910 # if defined(USE_LOCKF64)
2911 # define lockf lockf64
2913 # if defined(USE_FCNTL64)
2914 # define fcntl fcntl64
2916 # if defined(USE_TRUNCATE64)
2917 # define truncate truncate64
2919 # if defined(USE_FTRUNCATE64)
2920 # define ftruncate ftruncate64
2924 #ifdef USE_64_BIT_STDIO
2925 # ifdef HAS_FPOS64_T
2927 # define Fpos_t fpos64_t
2929 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2930 * will trigger defines like the ones below. Some 64-bit environments,
2931 * however, do not. */
2932 # if defined(USE_FOPEN64)
2933 # define fopen fopen64
2935 # if defined(USE_FSEEK64)
2936 # define fseek fseek64 /* don't do fseeko here, see perlio.c */
2938 # if defined(USE_FTELL64)
2939 # define ftell ftell64 /* don't do ftello here, see perlio.c */
2941 # if defined(USE_FSETPOS64)
2942 # define fsetpos fsetpos64
2944 # if defined(USE_FGETPOS64)
2945 # define fgetpos fgetpos64
2947 # if defined(USE_TMPFILE64)
2948 # define tmpfile tmpfile64
2950 # if defined(USE_FREOPEN64)
2951 # define freopen freopen64
2956 # include "iperlsys.h"
2961 # include "os2ish.h"
2963 # include "dosish.h"
2966 # include "vmsish.h"
2967 #elif defined(PLAN9)
2968 # include "./plan9/plan9ish.h"
2969 #elif defined(__VOS__)
2971 # include "./vos/vosish.h"
2973 # include "vos/vosish.h"
2975 #elif defined(__HAIKU__)
2976 # include "haiku/haikuish.h"
2978 # include "unixish.h"
2982 # include "amigaos.h"
2983 # undef FD_CLOEXEC /* a lie in AmigaOS */
2986 /* NSIG logic from Configure --> */
2989 # define NSIG (_NSIG)
2990 # elif defined(SIGMAX)
2991 # define NSIG (SIGMAX+1)
2992 # elif defined(SIG_MAX)
2993 # define NSIG (SIG_MAX+1)
2994 # elif defined(_SIG_MAX)
2995 # define NSIG (_SIG_MAX+1)
2996 # elif defined(MAXSIG)
2997 # define NSIG (MAXSIG+1)
2998 # elif defined(MAX_SIG)
2999 # define NSIG (MAX_SIG+1)
3000 # elif defined(SIGARRAYSIZE)
3001 # define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
3002 # elif defined(_sys_nsig)
3003 # define NSIG (_sys_nsig) /* Solaris 2.5 */
3005 /* Default to some arbitrary number that's big enough to get most
3006 * of the common signals. */
3010 /* <-- NSIG logic from Configure */
3012 #ifndef NO_ENVIRON_ARRAY
3013 # define USE_ENVIRON_ARRAY
3017 /* On some platforms it would be safe to use a read/write mutex with many
3018 * readers possible at the same time. On other platforms, notably IBM ones,
3019 * subsequent getenv calls destroy earlier ones. Those platforms would not
3020 * be able to handle simultaneous getenv calls */
3021 # define ENV_LOCK MUTEX_LOCK(&PL_env_mutex)
3022 # define ENV_UNLOCK MUTEX_UNLOCK(&PL_env_mutex)
3023 # define ENV_INIT MUTEX_INIT(&PL_env_mutex);
3024 # define ENV_TERM MUTEX_DESTROY(&PL_env_mutex);
3026 # define ENV_LOCK NOOP;
3027 # define ENV_UNLOCK NOOP;
3028 # define ENV_INIT NOOP;
3029 # define ENV_TERM NOOP;
3032 /* Some critical sections need to lock both the locale and the environment.
3033 * XXX khw intends to change this to lock both mutexes, but that brings up
3034 * issues of potential deadlock, so should be done at the beginning of a
3035 * development cycle. So for now, it just locks the environment. Note that
3036 * many modern platforms are locale-thread-safe anyway, so locking the locale
3037 * mutex is a no-op anyway */
3038 #define ENV_LOCALE_LOCK ENV_LOCK
3039 #define ENV_LOCALE_UNLOCK ENV_UNLOCK
3041 /* And some critical sections care only that no one else is writing either the
3042 * locale nor the environment. XXX Again this is for the future. This can be
3043 * simulated with using COND_WAIT in thread.h */
3044 #define ENV_LOCALE_READ_LOCK ENV_LOCALE_LOCK
3045 #define ENV_LOCALE_READ_UNLOCK ENV_LOCALE_UNLOCK
3047 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
3048 /* having sigaction(2) means that the OS supports both 1-arg and 3-arg
3049 * signal handlers. But the perl core itself only fully supports 1-arg
3050 * handlers, so don't enable for now.
3051 * NB: POSIX::sigaction() supports both.
3053 * # define PERL_USE_3ARG_SIGHANDLER
3058 * This is an alias for the OS's siginfo_t, except that where the OS
3059 * doesn't support it, declare a dummy version instead. This allows us to
3060 * have signal handler functions which always have a Siginfo_t parameter
3061 * regardless of platform, (and which will just be passed a NULL value
3062 * where the OS doesn't support HAS_SIGACTION).
3065 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
3066 typedef siginfo_t Siginfo_t;
3068 #ifdef si_signo /* minix */
3078 * initialise to avoid floating-point exceptions from overflow, etc
3080 #ifndef PERL_FPU_INIT
3081 # ifdef HAS_FPSETMASK
3082 # if HAS_FLOATINGPOINT_H
3083 # include <floatingpoint.h>
3085 /* Some operating systems have this as a macro, which in turn expands to a comma
3086 expression, and the last sub-expression is something that gets calculated,
3087 and then they have the gall to warn that a value computed is not used. Hence
3089 # define PERL_FPU_INIT (void)fpsetmask(0)
3090 # elif defined(SIGFPE) && defined(SIG_IGN) && !defined(PERL_MICRO)
3091 # define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN)
3092 # define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
3093 # define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
3095 # define PERL_FPU_INIT
3098 #ifndef PERL_FPU_PRE_EXEC
3099 # define PERL_FPU_PRE_EXEC {
3100 # define PERL_FPU_POST_EXEC }
3103 /* In Tru64 the cc -ieee enables the IEEE math but disables traps.
3104 * We need to reenable the "invalid" trap because otherwise generation
3105 * of NaN values leaves the IEEE fp flags in bad state, leaving any further
3106 * fp ops behaving strangely (Inf + 1 resulting in zero, for example). */
3108 # include <machine/fpu.h>
3109 # define PERL_SYS_FPU_INIT \
3111 ieee_set_fp_control(IEEE_TRAP_ENABLE_INV); \
3112 signal(SIGFPE, SIG_IGN); \
3115 /* In IRIX the default for Flush to Zero bit is true,
3116 * which means that results going below the minimum of normal
3117 * floating points go to zero, instead of going denormal/subnormal.
3118 * This is unlike almost any other system running Perl, so let's clear it.
3119 * [perl #123767] IRIX64 blead (ddce084a) opbasic/arith.t failure, originally
3120 * [perl #120426] small numbers shouldn't round to zero if they have extra floating digits
3122 * XXX The flush-to-zero behaviour should be a Configure scan.
3123 * To change the behaviour usually requires some system-specific
3124 * incantation, though, like the below. */
3126 # include <sys/fpu.h>
3127 # define PERL_SYS_FPU_INIT \
3129 union fpc_csr csr; \
3130 csr.fc_word = get_fpc_csr(); \
3131 csr.fc_struct.flush = 0; \
3132 set_fpc_csr(csr.fc_word); \
3136 #ifndef PERL_SYS_FPU_INIT
3137 # define PERL_SYS_FPU_INIT NOOP
3140 #ifndef PERL_SYS_INIT3_BODY
3141 # define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp)
3145 =for apidoc_section Embedding and Interpreter Cloning
3147 =for apidoc Am|void|PERL_SYS_INIT|int *argc|char*** argv
3148 Provides system-specific tune up of the C runtime environment necessary to
3149 run Perl interpreters. This should be called only once, before creating
3150 any Perl interpreters.
3152 =for apidoc Am|void|PERL_SYS_INIT3|int *argc|char*** argv|char*** env
3153 Provides system-specific tune up of the C runtime environment necessary to
3154 run Perl interpreters. This should be called only once, before creating
3155 any Perl interpreters.
3157 =for apidoc Am|void|PERL_SYS_TERM|
3158 Provides system-specific clean up of the C runtime environment after
3159 running Perl interpreters. This should be called only once, after
3160 freeing any remaining Perl interpreters.
3165 #define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv)
3166 #define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env)
3167 #define PERL_SYS_TERM() Perl_sys_term()
3169 #ifndef PERL_WRITE_MSG_TO_CONSOLE
3170 # define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len)
3175 # ifdef _POSIX_PATH_MAX
3176 # if PATH_MAX > _POSIX_PATH_MAX
3177 /* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX
3178 * included the null byte or not. Later amendments of POSIX,
3179 * XPG4, the Austin Group, and the Single UNIX Specification
3180 * all explicitly include the null byte in the PATH_MAX.
3181 * Ditto for _POSIX_PATH_MAX. */
3182 # define MAXPATHLEN PATH_MAX
3184 # define MAXPATHLEN _POSIX_PATH_MAX
3187 # define MAXPATHLEN (PATH_MAX+1)
3190 # define MAXPATHLEN 1024 /* Err on the large side. */
3194 /* clang Thread Safety Analysis/Annotations/Attributes
3195 * http://clang.llvm.org/docs/ThreadSafetyAnalysis.html
3197 * Available since clang 3.6-ish (appeared in 3.4, but shaky still in 3.5).
3198 * Apple XCode hijacks __clang_major__ and __clang_minor__
3199 * (6.1 means really clang 3.6), so needs extra hijinks
3200 * (could probably also test the contents of __apple_build_version__).
3202 #if defined(USE_ITHREADS) && defined(I_PTHREAD) && \
3203 defined(__clang__) && \
3205 ((!defined(__apple_build_version__) && \
3206 ((__clang_major__ == 3 && __clang_minor__ >= 6) || \
3207 (__clang_major__ >= 4))) || \
3208 (defined(__apple_build_version__) && \
3209 ((__clang_major__ == 6 && __clang_minor__ >= 1) || \
3210 (__clang_major__ >= 7))))
3211 # define PERL_TSA__(x) __attribute__((x))
3212 # define PERL_TSA_ACTIVE
3214 # define PERL_TSA__(x) /* No TSA, make TSA attributes no-ops. */
3215 # undef PERL_TSA_ACTIVE
3218 /* PERL_TSA_CAPABILITY() is used to annotate typedefs.
3219 * typedef old_type PERL_TSA_CAPABILITY("mutex") new_type;
3221 #define PERL_TSA_CAPABILITY(x) \
3222 PERL_TSA__(capability(x))
3224 /* In the below examples the mutex must be lexically visible, usually
3225 * either as global variables, or as function arguments. */
3227 /* PERL_TSA_GUARDED_BY() is used to annotate global variables.
3229 * Foo foo PERL_TSA_GUARDED_BY(mutex);
3231 #define PERL_TSA_GUARDED_BY(x) \
3232 PERL_TSA__(guarded_by(x))
3234 /* PERL_TSA_PT_GUARDED_BY() is used to annotate global pointers.
3235 * The data _behind_ the pointer is guarded.
3237 * Foo* ptr PERL_TSA_PT_GUARDED_BY(mutex);
3239 #define PERL_TSA_PT_GUARDED_BY(x) \
3240 PERL_TSA__(pt_guarded_by(x))
3242 /* PERL_TSA_REQUIRES() is used to annotate functions.
3243 * The caller MUST hold the resource when calling the function.
3245 * void Foo() PERL_TSA_REQUIRES(mutex);
3247 #define PERL_TSA_REQUIRES(x) \
3248 PERL_TSA__(requires_capability(x))
3250 /* PERL_TSA_EXCLUDES() is used to annotate functions.
3251 * The caller MUST NOT hold resource when calling the function.
3253 * EXCLUDES should be used when the function first acquires
3254 * the resource and then releases it. Use to avoid deadlock.
3256 * void Foo() PERL_TSA_EXCLUDES(mutex);
3258 #define PERL_TSA_EXCLUDES(x) \
3259 PERL_TSA__(locks_excluded(x))
3261 /* PERL_TSA_ACQUIRE() is used to annotate functions.
3262 * The caller MUST NOT hold the resource when calling the function,
3263 * and the function will acquire the resource.
3265 * void Foo() PERL_TSA_ACQUIRE(mutex);
3267 #define PERL_TSA_ACQUIRE(x) \
3268 PERL_TSA__(acquire_capability(x))
3270 /* PERL_TSA_RELEASE() is used to annotate functions.
3271 * The caller MUST hold the resource when calling the function,
3272 * and the function will release the resource.
3274 * void Foo() PERL_TSA_RELEASE(mutex);
3276 #define PERL_TSA_RELEASE(x) \
3277 PERL_TSA__(release_capability(x))
3279 /* PERL_TSA_NO_TSA is used to annotate functions.
3280 * Used when being intentionally unsafe, or when the code is too
3281 * complicated for the analysis. Use sparingly.
3283 * void Foo() PERL_TSA_NO_TSA;
3285 #define PERL_TSA_NO_TSA \
3286 PERL_TSA__(no_thread_safety_analysis)
3288 /* There are more annotations/attributes available, see the clang
3289 * documentation for details. */
3291 #if defined(USE_ITHREADS)
3293 # include <nw5thread.h>
3294 # elif defined(WIN32)
3295 # include <win32thread.h>
3297 # include "os2thread.h"
3298 # elif defined(I_MACH_CTHREADS)
3299 # include <mach/cthreads.h>
3300 typedef cthread_t perl_os_thread;
3301 typedef mutex_t perl_mutex;
3302 typedef condition_t perl_cond;
3303 typedef void * perl_key;
3304 # elif defined(I_PTHREAD) /* Posix threads */
3305 # include <pthread.h>
3306 typedef pthread_t perl_os_thread;
3307 typedef pthread_mutex_t PERL_TSA_CAPABILITY("mutex") perl_mutex;
3308 typedef pthread_cond_t perl_cond;
3309 typedef pthread_key_t perl_key;
3311 #endif /* USE_ITHREADS */
3313 #ifdef PERL_TSA_ACTIVE
3314 /* Since most pthread mutex interfaces have not been annotated, we
3315 * need to have these wrappers. The NO_TSA annotation is quite ugly
3316 * but it cannot be avoided in plain C, unlike in C++, where one could
3317 * e.g. use ACQUIRE() with no arg on a mutex lock method.
3319 * The bodies of these wrappers are in util.c
3321 * TODO: however, some platforms are starting to get these clang
3322 * thread safety annotations for pthreads, for example FreeBSD.
3323 * Do we need a way to a bypass these wrappers? */
3324 EXTERN_C int perl_tsa_mutex_lock(perl_mutex* mutex)
3325 PERL_TSA_ACQUIRE(*mutex)
3327 EXTERN_C int perl_tsa_mutex_unlock(perl_mutex* mutex)
3328 PERL_TSA_RELEASE(*mutex)
3337 # include "netware.h"
3340 #define STATUS_UNIX PL_statusvalue
3342 # define STATUS_NATIVE PL_statusvalue_vms
3344 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise
3345 * its contents can not be trusted. Unfortunately, Perl seems to check
3346 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should
3349 # include <stsdef.h>
3351 /* Presume this because if VMS changes it, it will require a new
3352 * set of APIs for waiting on children for binary compatibility.
3354 # define child_offset_bits (8)
3355 # ifndef C_FAC_POSIX
3356 # define C_FAC_POSIX 0x35A000
3359 /* STATUS_EXIT - validates and returns a NATIVE exit status code for the
3360 * platform from the existing UNIX or Native status values.
3363 # define STATUS_EXIT \
3364 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \
3365 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0))
3368 /* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child
3369 * exit code and shifts the UNIX value over the correct number of bits to
3370 * be a child status. Usually the number of bits is 8, but that could be
3371 * platform dependent. The NATIVE status code is presumed to have either
3372 * from a child process.
3375 /* This is complicated. The child processes return a true native VMS
3376 status which must be saved. But there is an assumption in Perl that
3377 the UNIX child status has some relationship to errno values, so
3378 Perl tries to translate it to text in some of the tests.
3379 In order to get the string translation correct, for the error, errno
3380 must be EVMSERR, but that generates a different text message
3381 than what the test programs are expecting. So an errno value must
3382 be derived from the native status value when an error occurs.
3383 That will hide the true native status message. With this version of
3384 perl, the true native child status can always be retrieved so that
3385 is not a problem. But in this case, Pl_statusvalue and errno may
3386 have different values in them.
3389 # define STATUS_NATIVE_CHILD_SET(n) \
3391 I32 evalue = (I32)n; \
3392 if (evalue == EVMSERR) { \
3393 PL_statusvalue_vms = vaxc$errno; \
3394 PL_statusvalue = evalue; \
3396 PL_statusvalue_vms = evalue; \
3397 if (evalue == -1) { \
3398 PL_statusvalue = -1; \
3399 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \
3401 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \
3402 set_vaxc_errno(evalue); \
3403 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \
3404 set_errno(EVMSERR); \
3405 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \
3406 PL_statusvalue = PL_statusvalue << child_offset_bits; \
3410 # ifdef VMSISH_STATUS
3411 # define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX)
3413 # define STATUS_CURRENT STATUS_UNIX
3416 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update
3417 * the NATIVE status to an equivalent value. Can not be used to translate
3418 * exit code values as exit code values are not guaranteed to have any
3419 * relationship at all to errno values.
3420 * This is used when Perl is forcing errno to have a specific value.
3422 # define STATUS_UNIX_SET(n) \
3424 I32 evalue = (I32)n; \
3425 PL_statusvalue = evalue; \
3426 if (PL_statusvalue != -1) { \
3427 if (PL_statusvalue != EVMSERR) { \
3428 PL_statusvalue &= 0xFFFF; \
3429 if (MY_POSIX_EXIT) \
3430 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\
3431 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \
3434 PL_statusvalue_vms = vaxc$errno; \
3437 else PL_statusvalue_vms = SS$_ABORT; \
3438 set_vaxc_errno(PL_statusvalue_vms); \
3441 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets
3442 * the NATIVE error status based on it.
3444 * When in the default mode to comply with the Perl VMS documentation,
3445 * 0 is a success and any other code sets the NATIVE status to a failure
3446 * code of SS$_ABORT.
3448 * In the new POSIX EXIT mode, native status will be set so that the
3449 * actual exit code will can be retrieved by the calling program or
3452 * If the exit code is not clearly a UNIX parent or child exit status,
3453 * it will be passed through as a VMS status.
3456 # define STATUS_UNIX_EXIT_SET(n) \
3458 I32 evalue = (I32)n; \
3459 PL_statusvalue = evalue; \
3460 if (MY_POSIX_EXIT) { \
3461 if (evalue <= 0xFF00) { \
3462 if (evalue > 0xFF) \
3463 evalue = (evalue >> child_offset_bits) & 0xFF; \
3464 PL_statusvalue_vms = \
3465 (C_FAC_POSIX | (evalue << 3 ) | \
3466 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \
3467 } else /* forgive them Perl, for they have sinned */ \
3468 PL_statusvalue_vms = evalue; \
3471 PL_statusvalue_vms = SS$_NORMAL; \
3472 else if (evalue <= 0xFF00) \
3473 PL_statusvalue_vms = SS$_ABORT; \
3474 else { /* forgive them Perl, for they have sinned */ \
3475 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \
3476 else PL_statusvalue_vms = vaxc$errno; \
3477 /* And obviously used a VMS status value instead of UNIX */ \
3478 PL_statusvalue = EVMSERR; \
3480 set_vaxc_errno(PL_statusvalue_vms); \
3485 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code
3486 * and sets the NATIVE error status based on it. This special case
3487 * is needed to maintain compatibility with past VMS behavior.
3489 * In the default mode on VMS, this number is passed through as
3490 * both the NATIVE and UNIX status. Which makes it different
3491 * that the STATUS_UNIX_EXIT_SET.
3493 * In the new POSIX EXIT mode, native status will be set so that the
3494 * actual exit code will can be retrieved by the calling program or
3497 * A POSIX exit code is from 0 to 255. If the exit code is higher
3498 * than this, it needs to be assumed that it is a VMS exit code and
3502 # define STATUS_EXIT_SET(n) \
3504 I32 evalue = (I32)n; \
3505 PL_statusvalue = evalue; \
3506 if (MY_POSIX_EXIT) \
3507 if (evalue > 255) PL_statusvalue_vms = evalue; else { \
3508 PL_statusvalue_vms = \
3509 (C_FAC_POSIX | (evalue << 3 ) | \
3510 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \
3512 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \
3513 set_vaxc_errno(PL_statusvalue_vms); \
3517 /* This macro forces a success status */
3518 # define STATUS_ALL_SUCCESS \
3519 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL)
3521 /* This macro forces a failure status */
3522 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, \
3523 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \
3524 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT)
3526 #elif defined(__amigaos4__)
3527 /* A somewhat experimental attempt to simulate posix return code values */
3528 # define STATUS_NATIVE PL_statusvalue_posix
3529 # define STATUS_NATIVE_CHILD_SET(n) \
3531 PL_statusvalue_posix = (n); \
3532 if (PL_statusvalue_posix < 0) { \
3533 PL_statusvalue = -1; \
3536 PL_statusvalue = n << 8; \
3539 # define STATUS_UNIX_SET(n) \
3541 PL_statusvalue = (n); \
3542 if (PL_statusvalue != -1) \
3543 PL_statusvalue &= 0xFFFF; \
3545 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3546 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3547 # define STATUS_CURRENT STATUS_UNIX
3548 # define STATUS_EXIT STATUS_UNIX
3549 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3550 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3553 # define STATUS_NATIVE PL_statusvalue_posix
3554 # if defined(WCOREDUMP)
3555 # define STATUS_NATIVE_CHILD_SET(n) \
3557 PL_statusvalue_posix = (n); \
3558 if (PL_statusvalue_posix == -1) \
3559 PL_statusvalue = -1; \
3562 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3563 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \
3564 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \
3567 # elif defined(WIFEXITED)
3568 # define STATUS_NATIVE_CHILD_SET(n) \
3570 PL_statusvalue_posix = (n); \
3571 if (PL_statusvalue_posix == -1) \
3572 PL_statusvalue = -1; \
3575 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3576 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \
3580 # define STATUS_NATIVE_CHILD_SET(n) \
3582 PL_statusvalue_posix = (n); \
3583 if (PL_statusvalue_posix == -1) \
3584 PL_statusvalue = -1; \
3587 PL_statusvalue_posix & 0xFFFF; \
3591 # define STATUS_UNIX_SET(n) \
3593 PL_statusvalue = (n); \
3594 if (PL_statusvalue != -1) \
3595 PL_statusvalue &= 0xFFFF; \
3597 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3598 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3599 # define STATUS_CURRENT STATUS_UNIX
3600 # define STATUS_EXIT STATUS_UNIX
3601 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3602 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3605 /* flags in PL_exit_flags for nature of exit() */
3606 #define PERL_EXIT_EXPECTED 0x01
3607 #define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */
3608 #define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */
3609 #define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */
3612 /* format to use for version numbers in file/directory names */
3613 /* XXX move to Configure? */
3614 /* This was only ever used for the current version, and that can be done at
3615 compile time, as PERL_FS_VERSION, so should we just delete it? */
3616 # ifndef PERL_FS_VER_FMT
3617 # define PERL_FS_VER_FMT "%d.%d.%d"
3621 #ifndef PERL_FS_VERSION
3622 # define PERL_FS_VERSION PERL_VERSION_STRING
3625 /* This defines a way to flush all output buffers. This may be a
3626 * performance issue, so we allow people to disable it. Also, if
3627 * we are using stdio, there are broken implementations of fflush(NULL)
3628 * out there, Solaris being the most prominent.
3630 #ifndef PERL_FLUSHALL_FOR_CHILD
3631 # if defined(USE_PERLIO) || defined(FFLUSH_NULL)
3632 # define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL)
3633 # elif defined(FFLUSH_ALL)
3634 # define PERL_FLUSHALL_FOR_CHILD my_fflush_all()
3636 # define PERL_FLUSHALL_FOR_CHILD NOOP
3640 #ifndef PERL_WAIT_FOR_CHILDREN
3641 # define PERL_WAIT_FOR_CHILDREN NOOP
3644 /* the traditional thread-unsafe notion of "current interpreter". */
3645 #ifndef PERL_SET_INTERP
3646 # define PERL_SET_INTERP(i) (PL_curinterp = (PerlInterpreter*)(i))
3649 #ifndef PERL_GET_INTERP
3650 # define PERL_GET_INTERP (PL_curinterp)
3653 #if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_GET_THX)
3654 # ifdef MULTIPLICITY
3655 # define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT)
3657 # define PERL_SET_THX(t) PERL_SET_CONTEXT(t)
3661 This replaces the previous %_ "hack" by the "%p" hacks.
3662 All that is required is that the perl source does not
3663 use "%-p" or "%-<number>p" or "%<number>p" formats.
3664 These formats will still work in perl code.
3665 See comments in sv.c for further details.
3667 Robin Barker 2005-07-14
3669 No longer use %1p for VDf = %vd. RMB 2007-10-19
3673 # define SVf_(n) "-" STRINGIFY(n) "p"
3681 # define SVf32 SVf_(32)
3685 # define SVf256 SVf_(256)
3688 #define SVfARG(p) ((void*)(p))
3694 /* Not ideal, but we cannot easily include a number in an already-numeric
3695 * format sequence. */
3697 # define HEKf256 "3p"
3700 #define HEKfARG(p) ((void*)(p))
3702 /* Documented in perlguts
3704 * %4p is a custom format
3707 # define UTF8f "d%" UVuf "%4p"
3709 #define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p)
3712 #define PNfARG(pn) (int)1, (UV)PadnameLEN(pn), (void *)PadnamePV(pn)
3715 /* not used; but needed for backward compatibility with XS code? - RMB */
3721 #if !defined(DEBUGGING) && !defined(NDEBUG)
3726 /* For functions that are marked as __attribute__noreturn__, it's not
3727 appropriate to call return. In either case, include the lint directive.
3729 #ifdef HASATTRIBUTE_NORETURN
3730 # define NORETURN_FUNCTION_END NOT_REACHED;
3732 # define NORETURN_FUNCTION_END NOT_REACHED; return 0
3735 #ifdef HAS_BUILTIN_EXPECT
3736 # define EXPECT(expr,val) __builtin_expect(expr,val)
3738 # define EXPECT(expr,val) (expr)
3742 =for apidoc_section Compiler directives
3744 =for apidoc Am||LIKELY|bool expr
3746 Returns the input unchanged, but at the same time it gives a branch prediction
3747 hint to the compiler that this condition is likely to be true.
3749 =for apidoc Am||UNLIKELY|bool expr
3751 Returns the input unchanged, but at the same time it gives a branch prediction
3752 hint to the compiler that this condition is likely to be false.
3756 #define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
3757 #define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
3759 #ifdef HAS_BUILTIN_CHOOSE_EXPR
3763 /* STATIC_ASSERT_DECL/STATIC_ASSERT_STMT are like assert(), but for compile
3764 time invariants. That is, their argument must be a constant expression that
3765 can be verified by the compiler. This expression can contain anything that's
3766 known to the compiler, e.g. #define constants, enums, or sizeof (...). If
3767 the expression evaluates to 0, compilation fails.
3768 Because they generate no runtime code (i.e. their use is "free"), they're
3769 always active, even under non-DEBUGGING builds.
3770 STATIC_ASSERT_DECL expands to a declaration and is suitable for use at
3771 file scope (outside of any function).
3772 STATIC_ASSERT_STMT expands to a statement and is suitable for use inside a
3775 #if (! defined(__IBMC__) || __IBMC__ >= 1210) \
3776 && (( defined(static_assert) && ( defined(_ISOC11_SOURCE) \
3777 || (__STDC_VERSION__ - 0) >= 201101L)) \
3778 || (defined(__cplusplus) && __cplusplus >= 201103L))
3779 /* XXX static_assert is a macro defined in <assert.h> in C11 or a compiler
3780 builtin in C++11. But IBM XL C V11 does not support _Static_assert, no
3781 matter what <assert.h> says.
3783 # define STATIC_ASSERT_DECL(COND) static_assert(COND, #COND)
3785 /* We use a bit-field instead of an array because gcc accepts
3786 'typedef char x[n]' where n is not a compile-time constant.
3787 We want to enforce constantness.
3789 # define STATIC_ASSERT_2(COND, SUFFIX) \
3791 unsigned int _static_assertion_failed_##SUFFIX : (COND) ? 1 : -1; \
3792 } _static_assertion_failed_##SUFFIX PERL_UNUSED_DECL
3793 # define STATIC_ASSERT_1(COND, SUFFIX) STATIC_ASSERT_2(COND, SUFFIX)
3794 # define STATIC_ASSERT_DECL(COND) STATIC_ASSERT_1(COND, __LINE__)
3796 /* We need this wrapper even in C11 because 'case X: static_assert(...);' is an
3797 error (static_assert is a declaration, and only statements can have labels).
3799 #define STATIC_ASSERT_STMT(COND) STMT_START { STATIC_ASSERT_DECL(COND); } STMT_END
3801 #ifndef __has_builtin
3802 # define __has_builtin(x) 0 /* not a clang style compiler */
3806 =for apidoc Am||ASSUME|bool expr
3807 C<ASSUME> is like C<assert()>, but it has a benefit in a release build. It is a
3808 hint to a compiler about a statement of fact in a function call free
3809 expression, which allows the compiler to generate better machine code. In a
3810 debug build, C<ASSUME(x)> is a synonym for C<assert(x)>. C<ASSUME(0)> means the
3811 control path is unreachable. In a for loop, C<ASSUME> can be used to hint that
3812 a loop will run at least X times. C<ASSUME> is based off MSVC's C<__assume>
3813 intrinsic function, see its documents for more details.
3819 # define ASSUME(x) assert(x)
3820 # if __has_builtin(__builtin_unreachable)
3821 # define HAS_BUILTIN_UNREACHABLE_
3822 # elif (defined(__GNUC__) && ( __GNUC__ > 4 \
3823 || __GNUC__ == 4 && __GNUC_MINOR__ >= 5))
3824 # define HAS_BUILTIN_UNREACHABLE_
3830 # define ASSUME(x) /* ASSUME() generates warnings on Solaris */
3832 # define NOT_REACHED
3833 #elif defined(HAS_BUILTIN_UNREACHABLE_)
3835 # define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable())
3837 # define NOT_REACHED \
3839 ASSUME(!"UNREACHABLE"); __builtin_unreachable(); \
3842 # if defined(_MSC_VER)
3843 # define ASSUME(x) __assume(x)
3844 # elif defined(__ARMCC_VERSION) /* untested */
3845 # define ASSUME(x) __promise(x)
3847 /* a random compiler might define assert to its own special optimization
3848 * token so pass it through to C lib as a last resort */
3849 # define ASSUME(x) assert(x)
3851 # define NOT_REACHED ASSUME(!"UNREACHABLE")
3854 /* Some unistd.h's give a prototype for pause() even though
3855 HAS_PAUSE ends up undefined. This causes the #define
3856 below to be rejected by the compiler. Sigh.
3861 #define Pause() sleep((32767<<16)+32767)
3865 # ifdef IOCPARM_MASK
3866 /* on BSDish systems we're safe */
3867 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
3868 # elif defined(_IOC_SIZE) && defined(__GLIBC__)
3869 /* on Linux systems we're safe; except when we're not [perl #38223] */
3870 # define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x))
3872 /* otherwise guess at what's safe */
3873 # define IOCPARM_LEN(x) 256
3877 #if defined(__CYGWIN__)
3879 * This symbol, if defined, indicates that the program should
3880 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
3881 * that a file is in "binary" mode -- that is, that no translation
3882 * of bytes occurs on read or write operations.
3884 # define USEMYBINMODE /**/
3885 # include <io.h> /* for setmode() prototype */
3886 # define my_binmode(fp, iotype, mode) \
3887 cBOOL(PerlLIO_setmode(fileno(fp), mode) != -1)
3891 void init_os_extras(void);
3894 #ifdef UNION_ANY_DEFINITION
3895 UNION_ANY_DEFINITION;
3913 void (*any_dptr) (void*);
3914 void (*any_dxptr) (pTHX_ void*);
3918 typedef I32 (*filter_t) (pTHX_ int, SV *, int);
3920 #define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
3921 #define FILTER_DATA(idx) \
3922 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL)
3923 #define FILTER_ISREADER(idx) \
3924 (PL_parser && PL_parser->rsfp_filters \
3925 && idx >= AvFILLp(PL_parser->rsfp_filters))
3926 #define PERL_FILTER_EXISTS(i) \
3927 (PL_parser && PL_parser->rsfp_filters \
3928 && (Size_t) (i) < av_count(PL_parser->rsfp_filters))
3930 #if defined(_AIX) && !defined(_AIX43)
3931 #if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE)
3932 /* We cannot include <crypt.h> to get the struct crypt_data
3933 * because of setkey prototype problems when threading */
3934 typedef struct crypt_data { /* straight from /usr/include/crypt.h */
3935 /* From OSF, Not needed in AIX
3943 #endif /* threading */
3946 #ifndef PERL_CALLCONV
3948 # define PERL_CALLCONV extern "C"
3950 # define PERL_CALLCONV
3953 #ifndef PERL_CALLCONV_NO_RET
3954 # define PERL_CALLCONV_NO_RET PERL_CALLCONV
3957 /* PERL_STATIC_NO_RET is supposed to be equivalent to STATIC on builds that
3958 dont have a noreturn as a declaration specifier
3960 #ifndef PERL_STATIC_NO_RET
3961 # define PERL_STATIC_NO_RET STATIC
3963 /* PERL_STATIC_NO_RET is supposed to be equivalent to PERL_STATIC_INLINE on
3964 builds that dont have a noreturn as a declaration specifier
3966 #ifndef PERL_STATIC_INLINE_NO_RET
3967 # define PERL_STATIC_INLINE_NO_RET PERL_STATIC_INLINE
3970 #ifndef PERL_STATIC_FORCE_INLINE
3971 # define PERL_STATIC_FORCE_INLINE PERL_STATIC_INLINE
3974 #ifndef PERL_STATIC_FORCE_INLINE_NO_RET
3975 # define PERL_STATIC_FORCE_INLINE_NO_RET PERL_STATIC_INLINE
3979 # include "iperlsys.h"
3982 #ifdef __LIBCATAMOUNT__
3983 #undef HAS_PASSWD /* unixish.h but not unixish enough. */
3985 #define FAKE_BIT_BUCKET
3988 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0.
3989 * Note that the USE_HASH_SEED and similar defines are *NOT* defined by
3990 * Configure, despite their names being similar to other defines like
3991 * USE_ITHREADS. Configure in fact knows nothing about the randomised
3992 * hashes. Therefore to enable/disable the hash randomisation defines
3993 * use the Configure -Accflags=... instead. */
3994 #if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED)
3995 # define USE_HASH_SEED
4001 /* macros to define bit-fields in structs. */
4002 #ifndef PERL_BITFIELD8
4003 # define PERL_BITFIELD8 U8
4005 #ifndef PERL_BITFIELD16
4006 # define PERL_BITFIELD16 U16
4008 #ifndef PERL_BITFIELD32
4009 # define PERL_BITFIELD32 U32
4019 #include "opnames.h"
4026 #include "warnings.h"
4029 /* these would be in doio.h if there was such a file */
4030 #define my_stat() my_stat_flags(SV_GMAGIC)
4031 #define my_lstat() my_lstat_flags(SV_GMAGIC)
4033 /* defined in sv.c, but also used in [ach]v.c */
4036 #undef _XPVCV_COMMON
4040 typedef struct magic_state MGS; /* struct magic_state defined in mg.c */
4042 #if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C) \
4043 || defined(PERL_EXT_RE_BUILD)
4045 /* These have to be predeclared, as they are used in proto.h which is #included
4046 * before their definitions in regcomp.h. */
4049 typedef struct regnode_charclass regnode_charclass;
4051 /* A hopefully less confusing name. The sub-classes are all Posix classes only
4052 * used under /l matching */
4053 typedef struct regnode_charclass_posixl regnode_charclass_class;
4054 typedef struct regnode_charclass_posixl regnode_charclass_posixl;
4056 typedef struct regnode_ssc regnode_ssc;
4057 typedef struct RExC_state_t RExC_state_t;
4058 struct _reg_trie_data;
4062 struct ptr_tbl_ent {
4063 struct ptr_tbl_ent* next;
4069 struct ptr_tbl_ent** tbl_ary;
4072 struct ptr_tbl_arena *tbl_arena;
4073 struct ptr_tbl_ent *tbl_arena_next;
4074 struct ptr_tbl_ent *tbl_arena_end;
4077 #if defined(htonl) && !defined(HAS_HTONL)
4080 #if defined(htons) && !defined(HAS_HTONS)
4083 #if defined(ntohl) && !defined(HAS_NTOHL)
4086 #if defined(ntohs) && !defined(HAS_NTOHS)
4094 # if (BYTEORDER & 0xffff) == 0x4321
4095 /* Big endian system, so ntohl, ntohs, htonl and htons do not need to
4096 re-order their values. However, to behave identically to the alternative
4097 implementations, they should truncate to the correct size. */
4098 # define ntohl(x) ((x)&0xFFFFFFFF)
4099 # define htonl(x) ntohl(x)
4100 # define ntohs(x) ((x)&0xFFFF)
4101 # define htons(x) ntohs(x)
4102 # elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
4104 /* Note that we can't straight out declare our own htonl and htons because
4105 the Win32 build process forcibly undefines HAS_HTONL etc for its miniperl,
4106 to avoid the overhead of initialising the socket subsystem, but the headers
4107 that *declare* the various functions are still seen. If we declare our own
4108 htonl etc they will clash with the declarations in the Win32 headers. */
4110 PERL_STATIC_INLINE U32
4111 my_swap32(const U32 x) {
4112 return ((x & 0xFF) << 24) | ((x >> 24) & 0xFF)
4113 | ((x & 0x0000FF00) << 8) | ((x & 0x00FF0000) >> 8);
4116 PERL_STATIC_INLINE U16
4117 my_swap16(const U16 x) {
4118 return ((x & 0xFF) << 8) | ((x >> 8) & 0xFF);
4121 # define htonl(x) my_swap32(x)
4122 # define ntohl(x) my_swap32(x)
4123 # define ntohs(x) my_swap16(x)
4124 # define htons(x) my_swap16(x)
4126 # error "Unsupported byteorder"
4127 /* The C pre-processor doesn't let us return the value of BYTEORDER as part of
4128 the error message. Please check the value of the macro BYTEORDER, as defined
4129 in config.h. The values of BYTEORDER we expect are
4131 big endian little endian
4132 32 bit 0x4321 0x1234
4133 64 bit 0x87654321 0x12345678
4135 If you have a system with a different byte order, please see
4136 pod/perlhack.pod for how to submit a patch to add supporting code.
4142 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
4145 #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
4146 /* Little endian system, so vtohl, vtohs, htovl and htovs do not need to
4147 re-order their values. However, to behave identically to the alternative
4148 implementations, they should truncate to the correct size. */
4149 # define vtohl(x) ((x)&0xFFFFFFFF)
4150 # define vtohs(x) ((x)&0xFFFF)
4151 # define htovl(x) vtohl(x)
4152 # define htovs(x) vtohs(x)
4153 #elif BYTEORDER == 0x4321 || BYTEORDER == 0x87654321
4154 # define vtohl(x) ((((x)&0xFF)<<24) \
4156 +(((x)&0x0000FF00)<<8) \
4157 +(((x)&0x00FF0000)>>8) )
4158 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
4159 # define htovl(x) vtohl(x)
4160 # define htovs(x) vtohs(x)
4162 # error "Unsupported byteorder"
4163 /* If you have need for current perl on PDP-11 or similar, and can help test
4164 that blead keeps working on a mixed-endian system, then see
4165 pod/perlhack.pod for how to submit patches to things working again. */
4168 /* *MAX Plus 1. A floating point value.
4169 Hopefully expressed in a way that dodgy floating point can't mess up.
4170 >> 2 rather than 1, so that value is safely less than I32_MAX after 1
4172 May find that some broken compiler will want the value cast to I32.
4173 [after the shift, as signed >> may not be as secure as unsigned >>]
4175 #define I32_MAX_P1 (2.0 * (1 + (((U32)I32_MAX) >> 1)))
4176 #define U32_MAX_P1 (4.0 * (1 + ((U32_MAX) >> 2)))
4177 /* For compilers that can't correctly cast NVs over 0x7FFFFFFF (or
4178 0x7FFFFFFFFFFFFFFF) to an unsigned integer. In the future, sizeof(UV)
4179 may be greater than sizeof(IV), so don't assume that half max UV is max IV.
4181 #define U32_MAX_P1_HALF (2.0 * (1 + ((U32_MAX) >> 2)))
4183 #define UV_MAX_P1 (4.0 * (1 + ((UV_MAX) >> 2)))
4184 #define IV_MAX_P1 (2.0 * (1 + (((UV)IV_MAX) >> 1)))
4185 #define UV_MAX_P1_HALF (2.0 * (1 + ((UV_MAX) >> 2)))
4187 /* This may look like unnecessary jumping through hoops, but converting
4188 out of range floating point values to integers *is* undefined behaviour,
4189 and it is starting to bite.
4191 =for apidoc_section Casting
4192 =for apidoc Am|I32|I_32|NV what
4193 Cast an NV to I32 while avoiding undefined C behavior
4195 =for apidoc Am|U32|U_32|NV what
4196 Cast an NV to U32 while avoiding undefined C behavior
4198 =for apidoc Am|IV|I_V|NV what
4199 Cast an NV to IV while avoiding undefined C behavior
4201 =for apidoc Am|UV|U_V|NV what
4202 Cast an NV to UV while avoiding undefined C behavior
4207 #define I_32(what) (cast_i32((NV)(what)))
4208 #define U_32(what) (cast_ulong((NV)(what)))
4209 #define I_V(what) (cast_iv((NV)(what)))
4210 #define U_V(what) (cast_uv((NV)(what)))
4212 #define I_32(n) ((n) < I32_MAX_P1 ? ((n) < I32_MIN ? I32_MIN : (I32) (n)) \
4213 : ((n) < U32_MAX_P1 ? (I32)(U32) (n) \
4214 : ((n) > 0 ? (I32) U32_MAX : 0 /* NaN */)))
4215 #define U_32(n) ((n) < 0.0 ? ((n) < I32_MIN ? (UV) I32_MIN : (U32)(I32) (n)) \
4216 : ((n) < U32_MAX_P1 ? (U32) (n) \
4217 : ((n) > 0 ? U32_MAX : 0 /* NaN */)))
4218 #define I_V(n) (LIKELY((n) < IV_MAX_P1) ? (UNLIKELY((n) < IV_MIN) ? IV_MIN : (IV) (n)) \
4219 : (LIKELY((n) < UV_MAX_P1) ? (IV)(UV) (n) \
4220 : ((n) > 0 ? (IV)UV_MAX : 0 /* NaN */)))
4221 #define U_V(n) ((n) < 0.0 ? (UNLIKELY((n) < IV_MIN) ? (UV) IV_MIN : (UV)(IV) (n)) \
4222 : (LIKELY((n) < UV_MAX_P1) ? (UV) (n) \
4223 : ((n) > 0 ? UV_MAX : 0 /* NaN */)))
4226 #define U_S(what) ((U16)U_32(what))
4227 #define U_I(what) ((unsigned int)U_32(what))
4228 #define U_L(what) U_32(what)
4231 # ifndef Perl_signbit
4232 # define Perl_signbit signbit
4236 /* These do not care about the fractional part, only about the range. */
4237 #define NV_WITHIN_IV(nv) (I_V(nv) >= IV_MIN && I_V(nv) <= IV_MAX)
4238 #define NV_WITHIN_UV(nv) ((nv)>=0.0 && U_V(nv) >= UV_MIN && U_V(nv) <= UV_MAX)
4240 /* Used with UV/IV arguments: */
4241 /* XXXX: need to speed it up */
4242 #define CLUMP_2UV(iv) ((iv) < 0 ? 0 : (UV)(iv))
4243 #define CLUMP_2IV(uv) ((uv) > (UV)IV_MAX ? IV_MAX : (IV)(uv))
4251 Uid_t getuid (void);
4252 Uid_t geteuid (void);
4253 Gid_t getgid (void);
4254 Gid_t getegid (void);
4258 #ifndef Perl_debug_log
4259 # define Perl_debug_log PerlIO_stderr()
4262 #ifndef Perl_error_log
4263 # define Perl_error_log (PL_stderrgv \
4264 && isGV(PL_stderrgv) \
4265 && GvIOp(PL_stderrgv) \
4266 && IoOFP(GvIOp(PL_stderrgv)) \
4267 ? IoOFP(GvIOp(PL_stderrgv)) \
4272 #define DEBUG_p_FLAG 0x00000001 /* 1 */
4273 #define DEBUG_s_FLAG 0x00000002 /* 2 */
4274 #define DEBUG_l_FLAG 0x00000004 /* 4 */
4275 #define DEBUG_t_FLAG 0x00000008 /* 8 */
4276 #define DEBUG_o_FLAG 0x00000010 /* 16 */
4277 #define DEBUG_c_FLAG 0x00000020 /* 32 */
4278 #define DEBUG_P_FLAG 0x00000040 /* 64 */
4279 #define DEBUG_m_FLAG 0x00000080 /* 128 */
4280 #define DEBUG_f_FLAG 0x00000100 /* 256 */
4281 #define DEBUG_r_FLAG 0x00000200 /* 512 */
4282 #define DEBUG_x_FLAG 0x00000400 /* 1024 */
4283 #define DEBUG_u_FLAG 0x00000800 /* 2048 */
4284 /* U is reserved for Unofficial, exploratory hacking */
4285 #define DEBUG_U_FLAG 0x00001000 /* 4096 */
4287 #define DEBUG_X_FLAG 0x00004000 /* 16384 */
4288 #define DEBUG_D_FLAG 0x00008000 /* 32768 */
4289 #define DEBUG_S_FLAG 0x00010000 /* 65536 */
4290 #define DEBUG_T_FLAG 0x00020000 /* 131072 */
4291 #define DEBUG_R_FLAG 0x00040000 /* 262144 */
4292 #define DEBUG_J_FLAG 0x00080000 /* 524288 */
4293 #define DEBUG_v_FLAG 0x00100000 /*1048576 */
4294 #define DEBUG_C_FLAG 0x00200000 /*2097152 */
4295 #define DEBUG_A_FLAG 0x00400000 /*4194304 */
4296 #define DEBUG_q_FLAG 0x00800000 /*8388608 */
4297 #define DEBUG_M_FLAG 0x01000000 /*16777216*/
4298 #define DEBUG_B_FLAG 0x02000000 /*33554432*/
4299 #define DEBUG_L_FLAG 0x04000000 /*67108864*/
4300 #define DEBUG_i_FLAG 0x08000000 /*134217728*/
4301 #define DEBUG_y_FLAG 0x10000000 /*268435456*/
4302 #define DEBUG_MASK 0x1FFFEFFF /* mask of all the standard flags */
4304 #define DEBUG_DB_RECURSE_FLAG 0x40000000
4305 #define DEBUG_TOP_FLAG 0x80000000 /* -D was given --> PL_debug |= FLAG */
4307 # define DEBUG_p_TEST_ UNLIKELY(PL_debug & DEBUG_p_FLAG)
4308 # define DEBUG_s_TEST_ UNLIKELY(PL_debug & DEBUG_s_FLAG)
4309 # define DEBUG_l_TEST_ UNLIKELY(PL_debug & DEBUG_l_FLAG)
4310 # define DEBUG_t_TEST_ UNLIKELY(PL_debug & DEBUG_t_FLAG)
4311 # define DEBUG_o_TEST_ UNLIKELY(PL_debug & DEBUG_o_FLAG)
4312 # define DEBUG_c_TEST_ UNLIKELY(PL_debug & DEBUG_c_FLAG)
4313 # define DEBUG_P_TEST_ UNLIKELY(PL_debug & DEBUG_P_FLAG)
4314 # define DEBUG_m_TEST_ UNLIKELY(PL_debug & DEBUG_m_FLAG)
4315 # define DEBUG_f_TEST_ UNLIKELY(PL_debug & DEBUG_f_FLAG)
4316 # define DEBUG_r_TEST_ UNLIKELY(PL_debug & DEBUG_r_FLAG)
4317 # define DEBUG_x_TEST_ UNLIKELY(PL_debug & DEBUG_x_FLAG)
4318 # define DEBUG_u_TEST_ UNLIKELY(PL_debug & DEBUG_u_FLAG)
4319 # define DEBUG_U_TEST_ UNLIKELY(PL_debug & DEBUG_U_FLAG)
4320 # define DEBUG_X_TEST_ UNLIKELY(PL_debug & DEBUG_X_FLAG)
4321 # define DEBUG_D_TEST_ UNLIKELY(PL_debug & DEBUG_D_FLAG)
4322 # define DEBUG_S_TEST_ UNLIKELY(PL_debug & DEBUG_S_FLAG)
4323 # define DEBUG_T_TEST_ UNLIKELY(PL_debug & DEBUG_T_FLAG)
4324 # define DEBUG_R_TEST_ UNLIKELY(PL_debug & DEBUG_R_FLAG)
4325 # define DEBUG_J_TEST_ UNLIKELY(PL_debug & DEBUG_J_FLAG)
4326 # define DEBUG_v_TEST_ UNLIKELY(PL_debug & DEBUG_v_FLAG)
4327 # define DEBUG_C_TEST_ UNLIKELY(PL_debug & DEBUG_C_FLAG)
4328 # define DEBUG_A_TEST_ UNLIKELY(PL_debug & DEBUG_A_FLAG)
4329 # define DEBUG_q_TEST_ UNLIKELY(PL_debug & DEBUG_q_FLAG)
4330 # define DEBUG_M_TEST_ UNLIKELY(PL_debug & DEBUG_M_FLAG)
4331 # define DEBUG_B_TEST_ UNLIKELY(PL_debug & DEBUG_B_FLAG)
4332 # define DEBUG_L_TEST_ UNLIKELY(PL_debug & DEBUG_L_FLAG)
4333 # define DEBUG_i_TEST_ UNLIKELY(PL_debug & DEBUG_i_FLAG)
4334 # define DEBUG_y_TEST_ UNLIKELY(PL_debug & DEBUG_y_FLAG)
4335 # define DEBUG_Xv_TEST_ (DEBUG_X_TEST_ && DEBUG_v_TEST_)
4336 # define DEBUG_Uv_TEST_ (DEBUG_U_TEST_ && DEBUG_v_TEST_)
4337 # define DEBUG_Pv_TEST_ (DEBUG_P_TEST_ && DEBUG_v_TEST_)
4338 # define DEBUG_Lv_TEST_ (DEBUG_L_TEST_ && DEBUG_v_TEST_)
4339 # define DEBUG_yv_TEST_ (DEBUG_y_TEST_ && DEBUG_v_TEST_)
4343 # define DEBUG_p_TEST DEBUG_p_TEST_
4344 # define DEBUG_s_TEST DEBUG_s_TEST_
4345 # define DEBUG_l_TEST DEBUG_l_TEST_
4346 # define DEBUG_t_TEST DEBUG_t_TEST_
4347 # define DEBUG_o_TEST DEBUG_o_TEST_
4348 # define DEBUG_c_TEST DEBUG_c_TEST_
4349 # define DEBUG_P_TEST DEBUG_P_TEST_
4350 # define DEBUG_m_TEST DEBUG_m_TEST_
4351 # define DEBUG_f_TEST DEBUG_f_TEST_
4352 # define DEBUG_r_TEST DEBUG_r_TEST_
4353 # define DEBUG_x_TEST DEBUG_x_TEST_
4354 # define DEBUG_u_TEST DEBUG_u_TEST_
4355 # define DEBUG_U_TEST DEBUG_U_TEST_
4356 # define DEBUG_X_TEST DEBUG_X_TEST_
4357 # define DEBUG_D_TEST DEBUG_D_TEST_
4358 # define DEBUG_S_TEST DEBUG_S_TEST_
4359 # define DEBUG_T_TEST DEBUG_T_TEST_
4360 # define DEBUG_R_TEST DEBUG_R_TEST_
4361 # define DEBUG_J_TEST DEBUG_J_TEST_
4362 # define DEBUG_v_TEST DEBUG_v_TEST_
4363 # define DEBUG_C_TEST DEBUG_C_TEST_
4364 # define DEBUG_A_TEST DEBUG_A_TEST_
4365 # define DEBUG_q_TEST DEBUG_q_TEST_
4366 # define DEBUG_M_TEST DEBUG_M_TEST_
4367 # define DEBUG_B_TEST DEBUG_B_TEST_
4368 # define DEBUG_L_TEST DEBUG_L_TEST_
4369 # define DEBUG_i_TEST DEBUG_i_TEST_
4370 # define DEBUG_y_TEST DEBUG_y_TEST_
4371 # define DEBUG_Xv_TEST DEBUG_Xv_TEST_
4372 # define DEBUG_Uv_TEST DEBUG_Uv_TEST_
4373 # define DEBUG_Pv_TEST DEBUG_Pv_TEST_
4374 # define DEBUG_Lv_TEST DEBUG_Lv_TEST_
4375 # define DEBUG_yv_TEST DEBUG_yv_TEST_
4377 # define PERL_DEB(a) a
4378 # define PERL_DEB2(a,b) a
4379 # define PERL_DEBUG(a) if (PL_debug) a
4380 # define DEBUG_p(a) if (DEBUG_p_TEST) a
4381 # define DEBUG_s(a) if (DEBUG_s_TEST) a
4382 # define DEBUG_l(a) if (DEBUG_l_TEST) a
4383 # define DEBUG_t(a) if (DEBUG_t_TEST) a
4384 # define DEBUG_o(a) if (DEBUG_o_TEST) a
4385 # define DEBUG_c(a) if (DEBUG_c_TEST) a
4386 # define DEBUG_P(a) if (DEBUG_P_TEST) a
4388 /* Temporarily turn off memory debugging in case the a
4389 * does memory allocation, either directly or indirectly. */
4390 # define DEBUG_m(a) \
4392 if (PERL_GET_INTERP) { \
4394 if (DEBUG_m_TEST) { \
4395 PL_debug &= ~DEBUG_m_FLAG; \
4397 PL_debug |= DEBUG_m_FLAG; \
4402 # define DEBUG__(t, a) \
4404 if (t) STMT_START {a;} STMT_END; \
4407 # define DEBUG_f(a) DEBUG__(DEBUG_f_TEST, a)
4409 /* For re_comp.c, re_exec.c, assume -Dr has been specified */
4410 # ifdef PERL_EXT_RE_BUILD
4411 # define DEBUG_r(a) STMT_START {a;} STMT_END
4413 # define DEBUG_r(a) DEBUG__(DEBUG_r_TEST, a)
4414 # endif /* PERL_EXT_RE_BUILD */
4416 # define DEBUG_x(a) DEBUG__(DEBUG_x_TEST, a)
4417 # define DEBUG_u(a) DEBUG__(DEBUG_u_TEST, a)
4418 # define DEBUG_U(a) DEBUG__(DEBUG_U_TEST, a)
4419 # define DEBUG_X(a) DEBUG__(DEBUG_X_TEST, a)
4420 # define DEBUG_D(a) DEBUG__(DEBUG_D_TEST, a)
4421 # define DEBUG_Xv(a) DEBUG__(DEBUG_Xv_TEST, a)
4422 # define DEBUG_Uv(a) DEBUG__(DEBUG_Uv_TEST, a)
4423 # define DEBUG_Pv(a) DEBUG__(DEBUG_Pv_TEST, a)
4424 # define DEBUG_Lv(a) DEBUG__(DEBUG_Lv_TEST, a)
4425 # define DEBUG_yv(a) DEBUG__(DEBUG_yv_TEST, a)
4427 # define DEBUG_S(a) DEBUG__(DEBUG_S_TEST, a)
4428 # define DEBUG_T(a) DEBUG__(DEBUG_T_TEST, a)
4429 # define DEBUG_R(a) DEBUG__(DEBUG_R_TEST, a)
4430 # define DEBUG_v(a) DEBUG__(DEBUG_v_TEST, a)
4431 # define DEBUG_C(a) DEBUG__(DEBUG_C_TEST, a)
4432 # define DEBUG_A(a) DEBUG__(DEBUG_A_TEST, a)
4433 # define DEBUG_q(a) DEBUG__(DEBUG_q_TEST, a)
4434 # define DEBUG_M(a) DEBUG__(DEBUG_M_TEST, a)
4435 # define DEBUG_B(a) DEBUG__(DEBUG_B_TEST, a)
4436 # define DEBUG_L(a) DEBUG__(DEBUG_L_TEST, a)
4437 # define DEBUG_i(a) DEBUG__(DEBUG_i_TEST, a)
4438 # define DEBUG_y(a) DEBUG__(DEBUG_y_TEST, a)
4440 #else /* ! DEBUGGING below */
4442 # define DEBUG_p_TEST (0)
4443 # define DEBUG_s_TEST (0)
4444 # define DEBUG_l_TEST (0)
4445 # define DEBUG_t_TEST (0)
4446 # define DEBUG_o_TEST (0)
4447 # define DEBUG_c_TEST (0)
4448 # define DEBUG_P_TEST (0)
4449 # define DEBUG_m_TEST (0)
4450 # define DEBUG_f_TEST (0)
4451 # define DEBUG_r_TEST (0)
4452 # define DEBUG_x_TEST (0)
4453 # define DEBUG_u_TEST (0)
4454 # define DEBUG_U_TEST (0)
4455 # define DEBUG_X_TEST (0)
4456 # define DEBUG_D_TEST (0)
4457 # define DEBUG_S_TEST (0)
4458 # define DEBUG_T_TEST (0)
4459 # define DEBUG_R_TEST (0)
4460 # define DEBUG_J_TEST (0)
4461 # define DEBUG_v_TEST (0)
4462 # define DEBUG_C_TEST (0)
4463 # define DEBUG_A_TEST (0)
4464 # define DEBUG_q_TEST (0)
4465 # define DEBUG_M_TEST (0)
4466 # define DEBUG_B_TEST (0)
4467 # define DEBUG_L_TEST (0)
4468 # define DEBUG_i_TEST (0)
4469 # define DEBUG_y_TEST (0)
4470 # define DEBUG_Xv_TEST (0)
4471 # define DEBUG_Uv_TEST (0)
4472 # define DEBUG_Pv_TEST (0)
4473 # define DEBUG_Lv_TEST (0)
4474 # define DEBUG_yv_TEST (0)
4476 # define PERL_DEB(a)
4477 # define PERL_DEB2(a,b) b
4478 # define PERL_DEBUG(a)
4506 # define DEBUG_Xv(a)
4507 # define DEBUG_Uv(a)
4508 # define DEBUG_Pv(a)
4509 # define DEBUG_Lv(a)
4510 # define DEBUG_yv(a)
4511 #endif /* DEBUGGING */
4514 #define DEBUG_SCOPE(where) \
4516 Perl_deb(aTHX_ "%s scope %ld (savestack=%ld) at %s:%d\n", \
4517 where, (long)PL_scopestack_ix, (long)PL_savestack_ix, \
4518 __FILE__, __LINE__));
4520 /* Keep the old croak based assert for those who want it, and as a fallback if
4521 the platform is so heretically non-ANSI that it can't assert. */
4523 #define Perl_assert(what) PERL_DEB2( \
4524 ((what) ? ((void) 0) : \
4525 (Perl_croak_nocontext("Assertion %s failed: file \"" __FILE__ \
4526 "\", line %d", STRINGIFY(what), __LINE__), \
4527 (void) 0)), ((void)0))
4529 /* assert() gets defined if DEBUGGING.
4530 * If no DEBUGGING, the <assert.h> has not been included. */
4532 # define assert(what) Perl_assert(what)
4535 # define assert_(what) assert(what),
4537 # define assert_(what)
4541 I32 (*uf_val)(pTHX_ IV, SV*);
4542 I32 (*uf_set)(pTHX_ IV, SV*);
4546 /* In pre-5.7-Perls the PERL_MAGIC_uvar magic didn't get the thread context.
4547 * XS code wanting to be backward compatible can do something
4548 * like the following:
4550 #ifndef PERL_MG_UFUNC
4551 #define PERL_MG_UFUNC(name,ix,sv) I32 name(IV ix, SV *sv)
4554 static PERL_MG_UFUNC(foo_get, index, val)
4564 #ifndef PERL_MG_UFUNC
4565 #define PERL_MG_UFUNC(name,ix,sv) I32 name(pTHX_ IV ix, SV *sv)
4570 /* isfinite and others are here rather than in math.h as C99 stipulates */
4575 # if !defined(WIN32) && !defined(VMS)
4577 char *crypt (const char*, const char*);
4579 # endif /* !WIN32 */
4582 char *getlogin (void);
4584 # endif /* !WIN32 */
4585 #endif /* !__cplusplus */
4587 /* Fixme on VMS. This needs to be a run-time, not build time options */
4588 /* Also rename() is affected by this */
4589 #ifdef UNLINK_ALL_VERSIONS /* Currently only makes sense for VMS */
4590 #define UNLINK unlnk
4591 I32 unlnk (pTHX_ const char*);
4593 #define UNLINK PerlLIO_unlink
4596 /* some versions of glibc are missing the setresuid() proto */
4597 #if defined(HAS_SETRESUID) && !defined(HAS_SETRESUID_PROTO)
4598 int setresuid(uid_t ruid, uid_t euid, uid_t suid);
4600 /* some versions of glibc are missing the setresgid() proto */
4601 #if defined(HAS_SETRESGID) && !defined(HAS_SETRESGID_PROTO)
4602 int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
4605 #ifndef HAS_SETREUID
4606 # ifdef HAS_SETRESUID
4607 # define setreuid(r,e) setresuid(r,e,(Uid_t)-1)
4608 # define HAS_SETREUID
4611 #ifndef HAS_SETREGID
4612 # ifdef HAS_SETRESGID
4613 # define setregid(r,e) setresgid(r,e,(Gid_t)-1)
4614 # define HAS_SETREGID
4618 /* Sighandler_t defined in iperlsys.h */
4620 #ifdef HAS_SIGACTION
4621 typedef struct sigaction Sigsave_t;
4623 typedef Sighandler_t Sigsave_t;
4634 # define RUNOPS_DEFAULT Perl_runops_debug
4636 # define RUNOPS_DEFAULT Perl_runops_standard
4639 #if defined(USE_PERLIO)
4640 EXTERN_C void PerlIO_teardown(void);
4641 # ifdef USE_ITHREADS
4642 # define PERLIO_INIT MUTEX_INIT(&PL_perlio_mutex)
4643 # define PERLIO_TERM \
4645 PerlIO_teardown(); \
4646 MUTEX_DESTROY(&PL_perlio_mutex);\
4649 # define PERLIO_INIT
4650 # define PERLIO_TERM PerlIO_teardown()
4653 # define PERLIO_INIT
4654 # define PERLIO_TERM
4658 # ifdef MUTEX_INIT_CALLS_MALLOC
4659 # define MALLOC_INIT \
4661 PL_malloc_mutex = NULL; \
4662 MUTEX_INIT(&PL_malloc_mutex); \
4664 # define MALLOC_TERM \
4666 perl_mutex tmp = PL_malloc_mutex; \
4667 PL_malloc_mutex = NULL; \
4668 MUTEX_DESTROY(&tmp); \
4671 # define MALLOC_INIT MUTEX_INIT(&PL_malloc_mutex)
4672 # define MALLOC_TERM MUTEX_DESTROY(&PL_malloc_mutex)
4675 # define MALLOC_INIT
4676 # define MALLOC_TERM
4679 #if defined(PERL_IMPLICIT_CONTEXT)
4681 struct perl_memory_debug_header;
4682 struct perl_memory_debug_header {
4684 # if defined(PERL_POISON) || defined(PERL_DEBUG_READONLY_COW)
4687 struct perl_memory_debug_header *prev;
4688 struct perl_memory_debug_header *next;
4689 # ifdef PERL_DEBUG_READONLY_COW
4694 #elif defined(PERL_DEBUG_READONLY_COW)
4696 struct perl_memory_debug_header;
4697 struct perl_memory_debug_header {
4703 #if defined (PERL_TRACK_MEMPOOL) || defined (PERL_DEBUG_READONLY_COW)
4705 # define PERL_MEMORY_DEBUG_HEADER_SIZE \
4706 (sizeof(struct perl_memory_debug_header) + \
4707 (MEM_ALIGNBYTES - sizeof(struct perl_memory_debug_header) \
4708 %MEM_ALIGNBYTES) % MEM_ALIGNBYTES)
4711 # define PERL_MEMORY_DEBUG_HEADER_SIZE 0
4714 #ifdef PERL_TRACK_MEMPOOL
4715 # ifdef PERL_DEBUG_READONLY_COW
4716 # define INIT_TRACK_MEMPOOL(header, interp) \
4718 (header).interpreter = (interp); \
4719 (header).prev = (header).next = &(header); \
4720 (header).readonly = 0; \
4723 # define INIT_TRACK_MEMPOOL(header, interp) \
4725 (header).interpreter = (interp); \
4726 (header).prev = (header).next = &(header); \
4730 # define INIT_TRACK_MEMPOOL(header, interp)
4733 #ifdef I_MALLOCMALLOC
4734 /* Needed for malloc_size(), malloc_good_size() on some systems */
4735 # include <malloc/malloc.h>
4739 # define Perl_safesysmalloc_size(where) Perl_malloced_size(where)
4741 # if defined(HAS_MALLOC_SIZE) && !defined(PERL_DEBUG_READONLY_COW)
4742 # ifdef PERL_TRACK_MEMPOOL
4743 # define Perl_safesysmalloc_size(where) \
4744 (malloc_size(((char *)(where)) - PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
4746 # define Perl_safesysmalloc_size(where) malloc_size(where)
4749 # ifdef HAS_MALLOC_GOOD_SIZE
4750 # ifdef PERL_TRACK_MEMPOOL
4751 # define Perl_malloc_good_size(how_much) \
4752 (malloc_good_size((how_much) + PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
4754 # define Perl_malloc_good_size(how_much) malloc_good_size(how_much)
4757 /* Having this as the identity operation makes some code simpler. */
4758 # define Perl_malloc_good_size(how_much) (how_much)
4762 typedef int (*runops_proc_t)(pTHX);
4763 typedef void (*share_proc_t) (pTHX_ SV *sv);
4764 typedef int (*thrhook_proc_t) (pTHX);
4765 typedef OP* (*PPADDR_t[]) (pTHX);
4766 typedef bool (*destroyable_proc_t) (pTHX_ SV *sv);
4767 typedef void (*despatch_signals_proc_t) (pTHX);
4769 #if defined(__DYNAMIC__) && defined(PERL_DARWIN) && defined(PERL_CORE)
4770 # include <crt_externs.h> /* for the env array */
4771 # define environ (*_NSGetEnviron())
4772 #elif defined(USE_ENVIRON_ARRAY) && !defined(environ)
4773 /* VMS and some other platforms don't use the environ array */
4774 EXTERN_C char **environ; /* environment variables supplied via exec */
4777 #define PERL_PATCHLEVEL_H_IMPLICIT
4778 #include "patchlevel.h"
4779 #undef PERL_PATCHLEVEL_H_IMPLICIT
4781 #define PERL_VERSION_STRING STRINGIFY(PERL_REVISION) "." \
4782 STRINGIFY(PERL_VERSION) "." \
4783 STRINGIFY(PERL_SUBVERSION)
4785 #define PERL_API_VERSION_STRING STRINGIFY(PERL_API_REVISION) "." \
4786 STRINGIFY(PERL_API_VERSION) "." \
4787 STRINGIFY(PERL_API_SUBVERSION)
4791 /* handy constants */
4792 EXTCONST char PL_warn_uninit[]
4793 INIT("Use of uninitialized value%s%s%s");
4794 EXTCONST char PL_warn_uninit_sv[]
4795 INIT("Use of uninitialized value%" SVf "%s%s");
4796 EXTCONST char PL_warn_nosemi[]
4797 INIT("Semicolon seems to be missing");
4798 EXTCONST char PL_warn_reserved[]
4799 INIT("Unquoted string \"%s\" may clash with future reserved word");
4800 EXTCONST char PL_warn_nl[]
4801 INIT("Unsuccessful %s on filename containing newline");
4802 EXTCONST char PL_no_wrongref[]
4803 INIT("Can't use %s ref as %s ref");
4804 /* The core no longer needs this here. If you require the string constant,
4805 please inline a copy into your own code. */
4806 EXTCONST char PL_no_symref[] __attribute__deprecated__
4807 INIT("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use");
4808 EXTCONST char PL_no_symref_sv[]
4809 INIT("Can't use string (\"%" SVf32 "\"%s) as %s ref while \"strict refs\" in use");
4811 EXTCONST char PL_no_usym[]
4812 INIT("Can't use an undefined value as %s reference");
4813 EXTCONST char PL_no_aelem[]
4814 INIT("Modification of non-creatable array value attempted, subscript %d");
4815 EXTCONST char PL_no_helem_sv[]
4816 INIT("Modification of non-creatable hash value attempted, subscript \"%" SVf "\"");
4817 EXTCONST char PL_no_modify[]
4818 INIT("Modification of a read-only value attempted");
4819 EXTCONST char PL_no_mem[sizeof("Out of memory!\n")]
4820 INIT("Out of memory!\n");
4821 EXTCONST char PL_no_security[]
4822 INIT("Insecure dependency in %s%s");
4823 EXTCONST char PL_no_sock_func[]
4824 INIT("Unsupported socket function \"%s\" called");
4825 EXTCONST char PL_no_dir_func[]
4826 INIT("Unsupported directory function \"%s\" called");
4827 EXTCONST char PL_no_func[]
4828 INIT("The %s function is unimplemented");
4829 EXTCONST char PL_no_myglob[]
4830 INIT("\"%s\" %s %s can't be in a package");
4831 EXTCONST char PL_no_localize_ref[]
4832 INIT("Can't localize through a reference");
4833 EXTCONST char PL_memory_wrap[]
4834 INIT("panic: memory wrap");
4835 EXTCONST char PL_extended_cp_format[]
4836 INIT("Code point 0x%" UVXf " is not Unicode, requires a Perl extension,"
4837 " and so is not portable");
4838 EXTCONST char PL_Yes[]
4840 EXTCONST char PL_No[]
4842 EXTCONST char PL_Zero[]
4846 =for apidoc_section Numeric Functions
4847 =for apidoc AmTuU|const char *|PL_hexdigit|U8 value
4849 This array, indexed by an integer, converts that value into the character that
4850 represents it. For example, if the input is 8, the return will be a string
4851 whose first character is '8'. What is actually returned is a pointer into a
4852 string. All you are interested in is the first character of that string. To
4853 get uppercase letters (for the values 10..15), add 16 to the index. Hence,
4854 C<PL_hexdigit[11]> is C<'b'>, and C<PL_hexdigit[11+16]> is C<'B'>. Adding 16
4855 to an index whose representation is '0'..'9' yields the same as not adding 16.
4856 Indices outside the range 0..31 result in (bad) undedefined behavior.
4860 EXTCONST char PL_hexdigit[]
4861 INIT("0123456789abcdef0123456789ABCDEF");
4863 EXTCONST STRLEN PL_WARN_ALL
4865 EXTCONST STRLEN PL_WARN_NONE
4868 /* This is constant on most architectures, a global on OS/2 */
4870 EXTCONST char PL_sh_path[]
4871 INIT(SH_PATH); /* full path of shell */
4875 EXTCONST char PL_cshname[]
4877 # define PL_cshlen (sizeof(CSH "") - 1)
4880 /* These are baked at compile time into any shared perl library.
4881 In future releases this will allow us in main() to sanity test the
4882 library we're linking against. */
4884 EXTCONST U8 PL_revision
4885 INIT(PERL_REVISION);
4886 EXTCONST U8 PL_version
4888 EXTCONST U8 PL_subversion
4889 INIT(PERL_SUBVERSION);
4891 EXTCONST char PL_uuemap[65]
4892 INIT("`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_");
4894 /* a special string address whose value is "isa", but which perl knows
4895 * to treat as if it were really "DOES" when printing the method name in
4896 * the "Can't call method '%s'" error message */
4897 EXTCONST char PL_isa_DOES[]
4901 EXTCONST char PL_uudmap[256] =
4903 # include "uuudmap.h"
4905 # include "uudmap.h"
4908 EXTCONST char PL_bitcount[256] =
4910 # include "ubitcount.h"
4912 # include "bitcount.h"
4915 EXTCONST char* const PL_sig_name[] = { SIG_NAME };
4916 EXTCONST int PL_sig_num[] = { SIG_NUM };
4918 EXTCONST char PL_uudmap[256];
4919 EXTCONST char PL_bitcount[256];
4920 EXTCONST char* const PL_sig_name[];
4921 EXTCONST int PL_sig_num[];
4924 /* fast conversion and case folding tables. The folding tables complement the
4925 * fold, so that 'a' maps to 'A' and 'A' maps to 'a', ignoring more complicated
4926 * folds such as outside the range or to multiple characters. */
4931 /* The EBCDIC fold table depends on the code page, and hence is found in
4932 * ebcdic_tables.h */
4934 EXTCONST unsigned char PL_fold[] = {
4935 0, 1, 2, 3, 4, 5, 6, 7,
4936 8, 9, 10, 11, 12, 13, 14, 15,
4937 16, 17, 18, 19, 20, 21, 22, 23,
4938 24, 25, 26, 27, 28, 29, 30, 31,
4939 32, 33, 34, 35, 36, 37, 38, 39,
4940 40, 41, 42, 43, 44, 45, 46, 47,
4941 48, 49, 50, 51, 52, 53, 54, 55,
4942 56, 57, 58, 59, 60, 61, 62, 63,
4943 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
4944 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
4945 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
4946 'x', 'y', 'z', 91, 92, 93, 94, 95,
4947 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
4948 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
4949 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
4950 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
4951 128, 129, 130, 131, 132, 133, 134, 135,
4952 136, 137, 138, 139, 140, 141, 142, 143,
4953 144, 145, 146, 147, 148, 149, 150, 151,
4954 152, 153, 154, 155, 156, 157, 158, 159,
4955 160, 161, 162, 163, 164, 165, 166, 167,
4956 168, 169, 170, 171, 172, 173, 174, 175,
4957 176, 177, 178, 179, 180, 181, 182, 183,
4958 184, 185, 186, 187, 188, 189, 190, 191,
4959 192, 193, 194, 195, 196, 197, 198, 199,
4960 200, 201, 202, 203, 204, 205, 206, 207,
4961 208, 209, 210, 211, 212, 213, 214, 215,
4962 216, 217, 218, 219, 220, 221, 222, 223,
4963 224, 225, 226, 227, 228, 229, 230, 231,
4964 232, 233, 234, 235, 236, 237, 238, 239,
4965 240, 241, 242, 243, 244, 245, 246, 247,
4966 248, 249, 250, 251, 252, 253, 254, 255
4969 EXT unsigned char PL_fold_locale[] = { /* Unfortunately not EXTCONST. */