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 * MULTIPLICITY and PERL_IMPLICIT_SYS */
55 /* XXX NOTE that from here --> to <-- the same logic is
56 * repeated in makedef.pl, so be certain to update
57 * both places when editing. */
60 # if !defined(MULTIPLICITY)
65 /* PERL_IMPLICIT_CONTEXT is a legacy synonym for MULTIPLICITY */
67 # ifndef PERL_IMPLICIT_CONTEXT
68 # define PERL_IMPLICIT_CONTEXT
71 #if defined(PERL_IMPLICIT_CONTEXT) && !defined(MULTIPLICITY)
75 /* undef WIN32 when building on Cygwin (for libwin32) - gph */
81 /* Use the reentrant APIs like localtime_r and getpwent_r */
82 /* Win32 has naturally threadsafe libraries, no need to use any _r variants.
83 * XXX KEEP makedef.pl copy of this code in sync */
84 #if defined(USE_ITHREADS) && !defined(USE_REENTRANT_API) && !defined(WIN32)
85 # define USE_REENTRANT_API
88 /* <--- here ends the logic shared by perl.h and makedef.pl */
91 =for apidoc_section $directives
92 =for apidoc AmnUu|void|EXTERN_C
93 When not compiling using C++, expands to nothing.
94 Otherwise is used in a declaration of a function to indicate the function
95 should have external C linkage. This is required for things to work for just
96 about all functions with external linkage compiled into perl.
97 Often, you can use C<L</START_EXTERN_C>> ... C<L</END_EXTERN_C>> blocks
98 surrounding all your code that you need to have this linkage.
102 EXTERN_C int flock(int fd, int op);
104 =for apidoc Amnu||START_EXTERN_C
105 When not compiling using C++, expands to nothing.
106 Otherwise begins a section of code in which every function will effectively
107 have C<L</EXTERN_C>> applied to it, that is to have external C linkage. The
108 section is ended by a C<L</END_EXTERN_C>>.
110 =for apidoc Amnu||END_EXTERN_C
111 When not compiling using C++, expands to nothing.
112 Otherwise ends a section of code already begun by a C<L</START_EXTERN_C>>.
117 #undef START_EXTERN_C
121 # define EXTERN_C extern "C"
122 # define START_EXTERN_C EXTERN_C {
123 # define END_EXTERN_C }
125 # define START_EXTERN_C
126 # define END_EXTERN_C
127 # define EXTERN_C extern
130 /* Fallback definitions in case we don't have definitions from config.h.
131 This should only matter for systems that don't use Configure and
132 haven't been modified to define PERL_STATIC_INLINE yet.
134 #if !defined(PERL_STATIC_INLINE)
135 # ifdef HAS_STATIC_INLINE
136 # define PERL_STATIC_INLINE static inline
138 # define PERL_STATIC_INLINE static
143 =for apidoc_section $concurrency
144 =for apidoc AmU|void|dTHXa|PerlInterpreter * a
145 On threaded perls, set C<pTHX> to C<a>; on unthreaded perls, do nothing
147 =for apidoc AmU|void|dTHXoa|PerlInterpreter * a
148 Now a synonym for C<L</dTHXa>>.
154 # define tTHX PerlInterpreter*
155 # define pTHX tTHX my_perl PERL_UNUSED_DECL
156 # define aTHX my_perl
157 # define aTHXa(a) aTHX = (tTHX)a
158 # define dTHXa(a) pTHX = (tTHX)a
159 # define dTHX pTHX = PERL_GET_THX
172 # if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL)
173 # define PERL_TRACK_MEMPOOL
176 # undef PERL_TRACK_MEMPOOL
180 # define dTHX_DEBUGGING dTHX
182 # define dTHX_DEBUGGING dNOOP
185 #define STATIC static
188 /* Do not use these macros. They were part of PERL_OBJECT, which was an
189 * implementation of multiplicity using C++ objects. They have been left
190 * here solely for the sake of XS code which has incorrectly
193 * The only one Devel::PPPort handles is this; list it as deprecated
195 =for apidoc_section $concurrency
196 =for apidoc AmD|void|CPERLscope|void x
201 # define CPERLscope(x) x
202 # define CPERLarg void
205 # define PERL_OBJECT_THIS
206 # define _PERL_OBJECT_THIS
207 # define PERL_OBJECT_THIS_
208 # define CALL_FPTR(fptr) (*fptr)
209 # define MEMBER_TO_FPTR(name) name
210 #endif /* !PERL_CORE */
212 #define CALLRUNOPS PL_runops
214 #define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags))
216 #define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags)
217 #define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \
218 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \
219 (strbeg),(minend),(sv),(data),(flags))
220 #define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \
221 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \
222 (strend),(flags),(data))
223 #define CALLREG_INTUIT_STRING(prog) \
224 RX_ENGINE(prog)->checkstr(aTHX_ (prog))
226 #define CALLREGFREE(prog) \
227 Perl_pregfree(aTHX_ (prog))
229 #define CALLREGFREE_PVT(prog) \
230 if(prog && RX_ENGINE(prog)) RX_ENGINE(prog)->rxfree(aTHX_ (prog))
232 #define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \
233 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv))
235 #define CALLREG_NUMBUF_STORE(rx,paren,value) \
236 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value))
238 #define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \
239 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren))
241 #define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \
242 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH))
244 #define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \
245 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE))
247 #define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \
248 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE))
250 #define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \
251 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR))
253 #define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \
254 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS))
256 #define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \
257 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY))
259 #define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \
260 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY))
262 #define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \
263 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR))
265 #define CALLREG_NAMED_BUFF_COUNT(rx) \
266 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT)
268 #define CALLREG_NAMED_BUFF_ALL(rx, flags) \
269 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags)
271 #define CALLREG_PACKAGE(rx) \
272 RX_ENGINE(rx)->qr_package(aTHX_ (rx))
274 #if defined(USE_ITHREADS)
275 # define CALLREGDUPE(prog,param) \
276 Perl_re_dup(aTHX_ (prog),(param))
278 # define CALLREGDUPE_PVT(prog,param) \
279 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \
283 /* some compilers impersonate gcc */
284 #if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
285 # define PERL_IS_GCC 1
288 #define PERL_GCC_VERSION_GE(major,minor,patch) \
289 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
290 >= ((100000 * (major)) + (1000 * (minor)) + (patch)))
291 #define PERL_GCC_VERSION_GT(major,minor,patch) \
292 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
293 > ((100000 * (major)) + (1000 * (minor)) + (patch)))
294 #define PERL_GCC_VERSION_LE(major,minor,patch) \
295 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
296 <= ((100000 * (major)) + (1000 * (minor)) + (patch)))
297 #define PERL_GCC_VERSION_LT(major,minor,patch) \
298 (((100000 * __GNUC__) + (1000 * __GNUC_MINOR__) + __GNUC_PATCHLEVEL__) \
299 < ((100000 * (major)) + (1000 * (minor)) + (patch)))
301 /* In case Configure was not used (we are using a "canned config"
302 * such as Win32, or a cross-compilation setup, for example) try going
303 * by the gcc major and minor versions. One useful URL is
304 * http://www.ohse.de/uwe/articles/gcc-attributes.html,
305 * but contrary to this information warn_unused_result seems
306 * not to be in gcc 3.3.5, at least. --jhi
307 * Also, when building extensions with an installed perl, this allows
308 * the user to upgrade gcc and get the right attributes, rather than
309 * relying on the list generated at Configure time. --AD
310 * Set these up now otherwise we get confused when some of the <*thread.h>
311 * includes below indirectly pull in <perlio.h> (which needs to know if we
312 * have HASATTRIBUTE_FORMAT).
316 # if defined __GNUC__ && !defined(__INTEL_COMPILER)
317 # if PERL_GCC_VERSION_GE(3,1,0)
318 # define HASATTRIBUTE_DEPRECATED
320 # if PERL_GCC_VERSION_GE(3,0,0) /* XXX Verify this version */
321 # define HASATTRIBUTE_FORMAT
322 # if defined __MINGW32__
323 # define PRINTF_FORMAT_NULL_OK
326 # if PERL_GCC_VERSION_GE(3,0,0)
327 # define HASATTRIBUTE_MALLOC
329 # if PERL_GCC_VERSION_GE(3,3,0)
330 # define HASATTRIBUTE_NONNULL
332 # if PERL_GCC_VERSION_GE(2,5,0)
333 # define HASATTRIBUTE_NORETURN
335 # if PERL_GCC_VERSION_GE(3,0,0)
336 # define HASATTRIBUTE_PURE
338 # if PERL_GCC_VERSION_GE(3,4,0)
339 # define HASATTRIBUTE_UNUSED
341 # if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus)
342 # define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */
344 # if PERL_GCC_VERSION_GE(3,4,0)
345 # define HASATTRIBUTE_WARN_UNUSED_RESULT
347 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */
348 # if PERL_GCC_VERSION_GE(4,7,0)
349 # define HASATTRIBUTE_ALWAYS_INLINE
352 #endif /* #ifndef PERL_MICRO */
354 #ifdef HASATTRIBUTE_DEPRECATED
355 # define __attribute__deprecated__ __attribute__((deprecated))
357 #ifdef HASATTRIBUTE_FORMAT
358 # define __attribute__format__(x,y,z) __attribute__((format(x,y,z)))
360 #ifdef HASATTRIBUTE_MALLOC
361 # define __attribute__malloc__ __attribute__((__malloc__))
363 #ifdef HASATTRIBUTE_NONNULL
364 # define __attribute__nonnull__(a) __attribute__((nonnull(a)))
366 #ifdef HASATTRIBUTE_NORETURN
367 # define __attribute__noreturn__ __attribute__((noreturn))
369 #ifdef HASATTRIBUTE_PURE
370 # define __attribute__pure__ __attribute__((pure))
372 #ifdef HASATTRIBUTE_UNUSED
373 # define __attribute__unused__ __attribute__((unused))
375 #ifdef HASATTRIBUTE_WARN_UNUSED_RESULT
376 # define __attribute__warn_unused_result__ __attribute__((warn_unused_result))
378 #ifdef HASATTRIBUTE_ALWAYS_INLINE
379 /* always_inline is buggy in gcc <= 4.6 and causes compilation errors */
380 # if !defined(PERL_IS_GCC) || PERL_GCC_VERSION_GE(4,7,0)
381 # define __attribute__always_inline__ __attribute__((always_inline))
385 /* If we haven't defined the attributes yet, define them to blank. */
386 #ifndef __attribute__deprecated__
387 # define __attribute__deprecated__
389 #ifndef __attribute__format__
390 # define __attribute__format__(x,y,z)
392 #ifndef __attribute__malloc__
393 # define __attribute__malloc__
395 #ifndef __attribute__nonnull__
396 # define __attribute__nonnull__(a)
398 #ifndef __attribute__noreturn__
399 # define __attribute__noreturn__
401 #ifndef __attribute__pure__
402 # define __attribute__pure__
404 #ifndef __attribute__unused__
405 # define __attribute__unused__
407 #ifndef __attribute__warn_unused_result__
408 # define __attribute__warn_unused_result__
410 #ifndef __attribute__always_inline__
411 # define __attribute__always_inline__
414 /* Some OS warn on NULL format to printf */
415 #ifdef PRINTF_FORMAT_NULL_OK
416 # define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z)
418 # define __attribute__format__null_ok__(x,y,z)
422 * Because of backward compatibility reasons the PERL_UNUSED_DECL
423 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh.
425 * Note that there are C compilers such as MetroWerks CodeWarrior
426 * which do not have an "inlined" way (like the gcc __attribute__) of
427 * marking unused variables (they need e.g. a #pragma) and therefore
428 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even
429 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above).
431 =for apidoc_section $directives
432 =for apidoc AmnU||PERL_UNUSED_DECL
433 Tells the compiler that the parameter in the function prototype just before it
434 is not necessarily expected to be used in the function. Not that many
435 compilers understand this, so this should only be used in cases where
436 C<L</PERL_UNUSED_ARG>> can't conveniently be used.
443 Perl_perly_sighandler(int sig, Siginfo_t *sip PERL_UNUSED_DECL,
444 void *uap PERL_UNUSED_DECL, bool safe)
451 #ifndef PERL_UNUSED_DECL
452 # define PERL_UNUSED_DECL __attribute__unused__
456 * for silencing unused variables that are actually used most of the time,
457 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs,
458 * or variables/arguments that are used only in certain configurations.
460 =for apidoc Ams||PERL_UNUSED_ARG|void x
461 This is used to suppress compiler warnings that a parameter to a function is
462 not used. This situation can arise, for example, when a parameter is needed
463 under some configuration conditions, but not others, so that C preprocessor
464 conditional compilation causes it be used just some times.
466 =for apidoc Amns||PERL_UNUSED_CONTEXT
467 This is used to suppress compiler warnings that the thread context parameter to
468 a function is not used. This situation can arise, for example, when a
469 C preprocessor conditional compilation causes it be used just some times.
471 =for apidoc Ams||PERL_UNUSED_VAR|void x
472 This is used to suppress compiler warnings that the variable I<x> is not used.
473 This situation can arise, for example, when a C preprocessor conditional
474 compilation causes it be used just some times.
478 #ifndef PERL_UNUSED_ARG
479 # define PERL_UNUSED_ARG(x) ((void)sizeof(x))
481 #ifndef PERL_UNUSED_VAR
482 # define PERL_UNUSED_VAR(x) ((void)sizeof(x))
485 #if defined(USE_ITHREADS)
486 # define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl)
488 # define PERL_UNUSED_CONTEXT
491 /* gcc (-ansi) -pedantic doesn't allow gcc statement expressions,
492 * g++ allows them but seems to have problems with them
493 * (insane errors ensue).
494 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2).
496 #if defined(PERL_GCC_PEDANTIC) || \
497 (defined(__GNUC__) && defined(__cplusplus) && \
498 (PERL_GCC_VERSION_LT(4,2,0)))
499 # ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
500 # define PERL_GCC_BRACE_GROUPS_FORBIDDEN
506 =for apidoc Am||PERL_UNUSED_RESULT|void x
508 This macro indicates to discard the return value of the function call inside
511 PERL_UNUSED_RESULT(foo(a, b))
513 The main reason for this is that the combination of C<gcc -Wunused-result>
514 (part of C<-Wall>) and the C<__attribute__((warn_unused_result))> cannot
515 be silenced with casting to C<void>. This causes trouble when the system
516 header files use the attribute.
518 Use C<PERL_UNUSED_RESULT> sparingly, though, since usually the warning
519 is there for a good reason: you might lose success/failure information,
520 or leak resources, or changes in resources.
522 But sometimes you just want to ignore the return value, I<e.g.>, on
523 codepaths soon ending up in abort, or in "best effort" attempts,
524 or in situations where there is no good way to handle failures.
526 Sometimes C<PERL_UNUSED_RESULT> might not be the most natural way:
527 another possibility is that you can capture the return value
528 and use C<L</PERL_UNUSED_VAR>> on that.
532 The __typeof__() is used instead of typeof() since typeof() is not
533 available under strict C89, and because of compilers masquerading
534 as gcc (clang and icc), we want exactly the gcc extension
535 __typeof__ and nothing else.
538 #ifndef PERL_UNUSED_RESULT
539 # if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT)
540 # define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END
542 # define PERL_UNUSED_RESULT(v) ((void)(v))
546 #if defined(_MSC_VER) && _MSC_VER < 1400
547 /* XXX older MSVC versions have a smallish macro buffer */
548 # define PERL_SMALL_MACRO_BUFFER
551 /* on gcc (and clang), specify that a warning should be temporarily
554 * GCC_DIAG_IGNORE_DECL(-Wmultichar);
556 * GCC_DIAG_RESTORE_DECL;
558 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html
560 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011;
561 * clang only pretends to be GCC 4.2, but still supports push/pop.
563 * Note on usage: all macros must be used at a place where a declaration
564 * or statement can occur, i.e., not in the middle of an expression.
565 * *_DIAG_IGNORE() and *_DIAG_RESTORE can be used in any such place, but
566 * must be used without a following semicolon. *_DIAG_IGNORE_DECL() and
567 * *_DIAG_RESTORE_DECL must be used with a following semicolon, and behave
568 * syntactically as declarations (like dNOOP). *_DIAG_IGNORE_STMT()
569 * and *_DIAG_RESTORE_STMT must be used with a following semicolon,
570 * and behave syntactically as statements (like NOOP).
574 #if defined(__clang__) || defined(__clang) || PERL_GCC_VERSION_GE(4,6,0)
575 # define GCC_DIAG_PRAGMA(x) _Pragma (#x)
576 /* clang has "clang diagnostic" pragmas, but also understands gcc. */
577 # define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \
578 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x)
579 # define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop")
581 # define GCC_DIAG_IGNORE(w)
582 # define GCC_DIAG_RESTORE
584 #define GCC_DIAG_IGNORE_DECL(x) GCC_DIAG_IGNORE(x) dNOOP
585 #define GCC_DIAG_RESTORE_DECL GCC_DIAG_RESTORE dNOOP
586 #define GCC_DIAG_IGNORE_STMT(x) GCC_DIAG_IGNORE(x) NOOP
587 #define GCC_DIAG_RESTORE_STMT GCC_DIAG_RESTORE NOOP
588 /* for clang specific pragmas */
589 #if defined(__clang__) || defined(__clang)
590 # define CLANG_DIAG_PRAGMA(x) _Pragma (#x)
591 # define CLANG_DIAG_IGNORE(x) _Pragma("clang diagnostic push") \
592 CLANG_DIAG_PRAGMA(clang diagnostic ignored #x)
593 # define CLANG_DIAG_RESTORE _Pragma("clang diagnostic pop")
595 # define CLANG_DIAG_IGNORE(w)
596 # define CLANG_DIAG_RESTORE
598 #define CLANG_DIAG_IGNORE_DECL(x) CLANG_DIAG_IGNORE(x) dNOOP
599 #define CLANG_DIAG_RESTORE_DECL CLANG_DIAG_RESTORE dNOOP
600 #define CLANG_DIAG_IGNORE_STMT(x) CLANG_DIAG_IGNORE(x) NOOP
601 #define CLANG_DIAG_RESTORE_STMT CLANG_DIAG_RESTORE NOOP
603 #if defined(_MSC_VER) && (_MSC_VER >= 1300)
604 # define MSVC_DIAG_IGNORE(x) __pragma(warning(push)) \
605 __pragma(warning(disable : x))
606 # define MSVC_DIAG_RESTORE __pragma(warning(pop))
608 # define MSVC_DIAG_IGNORE(x)
609 # define MSVC_DIAG_RESTORE
611 #define MSVC_DIAG_IGNORE_DECL(x) MSVC_DIAG_IGNORE(x) dNOOP
612 #define MSVC_DIAG_RESTORE_DECL MSVC_DIAG_RESTORE dNOOP
613 #define MSVC_DIAG_IGNORE_STMT(x) MSVC_DIAG_IGNORE(x) NOOP
614 #define MSVC_DIAG_RESTORE_STMT MSVC_DIAG_RESTORE NOOP
617 =for apidoc Amns||NOOP
618 Do nothing; typically used as a placeholder to replace something that used to
621 =for apidoc Amns||dNOOP
622 Declare nothing; typically used as a placeholder to replace something that used
623 to declare something. Works on compilers that require declarations before any
628 #define NOOP /*EMPTY*/(void)0
629 #define dNOOP struct Perl___notused_struct
632 /* Don't bother defining tTHX ; using it outside
633 * code guarded by MULTIPLICITY is an error.
639 # define aTHXa(a) NOOP
640 # define dTHXa(a) dNOOP
655 =for apidoc_section $concurrency
656 =for apidoc AmnU||dVAR
657 This is now a synonym for dNOOP: declare nothing
659 =for apidoc_section $XS
660 =for apidoc Amns||dMY_CXT_SV
661 Now a placeholder that declares nothing
667 /* Backwards compatibility macro for XS code. It used to be part of the
668 * PERL_GLOBAL_STRUCT(_PRIVATE) feature, which no longer exists */
671 /* these are only defined for compatibility; should not be used internally.
673 # define dMY_CXT_SV dNOOP
676 # define pTHXo_ pTHX_
678 # define aTHXo_ aTHX_
680 # define dTHXoa(x) dTHXa(x)
685 # define pTHXx PerlInterpreter *my_perl
686 # define pTHXx_ pTHXx,
687 # define aTHXx my_perl
688 # define aTHXx_ aTHXx,
692 /* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation)
693 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...).
694 * dTHXs is therefore needed for all functions using PerlIO_foo(). */
695 #ifdef PERL_IMPLICIT_SYS
701 #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
702 # ifndef PERL_USE_GCC_BRACE_GROUPS
703 # define PERL_USE_GCC_BRACE_GROUPS
708 =for apidoc_section $directives
709 =for apidoc AmnUu|void|STMT_START
710 =for apidoc_item ||STMT_END
712 This allows a series of statements in a macro to be used as a single statement,
715 if (x) STMT_START { ... } STMT_END else ...
717 Note that you can't return a value out of them, which limits their utility.
718 But see C<L</PERL_USE_GCC_BRACE_GROUPS>>.
720 =for apidoc AmnuU|bool|PERL_USE_GCC_BRACE_GROUPS
722 This C pre-processor value, if defined, indicates that it is permissible to use
723 the GCC brace groups extension. This extension, of the form
727 turns the block consisting of I<statements ...> into an expression with a
728 value, unlike plain C language blocks. This can present optimization
729 possibilities, B<BUT> you generally need to specify an alternative in case this
730 ability doesn't exist or has otherwise been forbidden.
736 #ifdef PERL_USE_GCC_BRACE_GROUPS
746 Trying to select a version that gives no warnings...
748 #if !(defined(STMT_START) && defined(STMT_END))
749 # define STMT_START do
750 # define STMT_END while (0)
753 #ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
754 # define BYTEORDER 0x1234
757 #if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
764 * The following contortions are brought to you on behalf of all the
765 * standards, semi-standards, de facto standards, not-so-de-facto standards
766 * of the world, as well as all the other botches anyone ever thought of.
767 * The basic theory is that if we work hard enough here, the rest of the
768 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
771 /* define this once if either system, instead of cluttering up the src */
776 /* These exist only for back-compat with XS modules. */
779 #define CAN_PROTOTYPE
786 /* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT,
787 * you get a perl without taint support, but doubtlessly with a lesser
788 * degree of support. Do not do so unless you know exactly what it means
789 * technically, have a good reason to do so, and know exactly how the
790 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered
791 * a potential security risk due to flat out ignoring the security-relevant
792 * taint flags. This being said, a perl without taint support compiled in
793 * has marginal run-time performance benefits.
794 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT.
795 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it
796 * silently ignores -t/-T instead of throwing an exception.
798 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT
799 * voids your nonexistent warranty!
801 #if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT)
802 # define NO_TAINT_SUPPORT 1
805 /* NO_TAINT_SUPPORT can be set to transform virtually all taint-related
806 * operations into no-ops for a very modest speed-up. Enable only if you
807 * know what you're doing: tests and CPAN modules' tests are bound to fail.
809 #ifdef NO_TAINT_SUPPORT
811 # define TAINT_NOT NOOP
812 # define TAINT_IF(c) NOOP
813 # define TAINT_ENV() NOOP
814 # define TAINT_PROPER(s) NOOP
815 # define TAINT_set(s) NOOP
817 # define TAINTING_get 0
818 # define TAINTING_set(s) NOOP
819 # define TAINT_WARN_get 0
820 # define TAINT_WARN_set(s) NOOP
822 /* Set to tainted if we are running under tainting mode */
823 # define TAINT (PL_tainted = PL_tainting)
825 # define TAINT_NOT (PL_tainted = FALSE) /* Untaint */
826 # define TAINT_IF(c) if (UNLIKELY(c)) { TAINT; } /* Conditionally taint */
827 # define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); }
828 /* croak or warn if tainting */
829 # define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { \
830 taint_proper(NULL, s); \
832 # define TAINT_set(s) (PL_tainted = (s))
833 # define TAINT_get (cBOOL(UNLIKELY(PL_tainted))) /* Is something tainted? */
834 # define TAINTING_get (cBOOL(UNLIKELY(PL_tainting))) /* Is taint checking enabled? */
835 # define TAINTING_set(s) (PL_tainting = (s))
836 # define TAINT_WARN_get (PL_taint_warn) /* FALSE => tainting violations
840 # define TAINT_WARN_set(s) (PL_taint_warn = (s))
843 /* flags used internally only within pp_subst and pp_substcont */
845 # define SUBST_TAINT_STR 1 /* string tainted */
846 # define SUBST_TAINT_PAT 2 /* pattern tainted */
847 # define SUBST_TAINT_REPL 4 /* replacement tainted */
848 # define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */
849 # define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */
852 /* XXX All process group stuff is handled in pp_sys.c. Should these
853 defines move there? If so, I could simplify this a lot. --AD 9/96.
855 /* Process group stuff changed from traditional BSD to POSIX.
856 perlfunc.pod documents the traditional BSD-style syntax, so we'll
857 try to preserve that, if possible.
860 # define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
861 #elif defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
862 # define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
863 #elif defined(HAS_SETPGRP2)
864 # define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
866 #if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
867 # define HAS_SETPGRP /* Well, effectively it does . . . */
870 /* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
871 our life easier :-) so we'll try it.
874 # define BSD_GETPGRP(pid) getpgid((pid))
875 #elif defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
876 # define BSD_GETPGRP(pid) getpgrp((pid))
877 #elif defined(HAS_GETPGRP2)
878 # define BSD_GETPGRP(pid) getpgrp2((pid))
880 #if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
881 # define HAS_GETPGRP /* Well, effectively it does . . . */
884 /* These are not exact synonyms, since setpgrp() and getpgrp() may
885 have different behaviors, but perl.h used to define USE_BSDPGRP
886 (prior to 5.003_05) so some extension might depend on it.
888 #if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
894 /* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that
895 pthread.h must be included before all other header files.
897 #if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
898 # include <pthread.h>
901 #include <sys/types.h>
917 #ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
929 #ifdef NEED_XLOCALE_H
930 # include <xlocale.h>
933 /* If not forbidden, we enable locale handling if either 1) the POSIX 2008
934 * functions are available, or 2) just the setlocale() function. This logic is
935 * repeated in t/loc_tools.pl and makedef.pl; The three should be kept in
937 #if ! defined(NO_LOCALE)
939 # if ! defined(NO_POSIX_2008_LOCALE) \
940 && defined(HAS_NEWLOCALE) \
941 && defined(HAS_USELOCALE) \
942 && defined(HAS_DUPLOCALE) \
943 && defined(HAS_FREELOCALE) \
944 && defined(LC_ALL_MASK)
946 /* For simplicity, the code is written to assume that any platform advanced
947 * enough to have the Posix 2008 locale functions has LC_ALL. The final
948 * test above makes sure that assumption is valid */
950 # define HAS_POSIX_2008_LOCALE
952 # elif defined(HAS_SETLOCALE)
958 # define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
960 # if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
961 && defined(HAS_STRXFRM)
962 # define USE_LOCALE_COLLATE
964 # if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
965 # define USE_LOCALE_CTYPE
967 # if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
968 # define USE_LOCALE_NUMERIC
970 # if !defined(NO_LOCALE_MESSAGES) && defined(LC_MESSAGES)
971 # define USE_LOCALE_MESSAGES
973 # if !defined(NO_LOCALE_MONETARY) && defined(LC_MONETARY)
974 # define USE_LOCALE_MONETARY
976 # if !defined(NO_LOCALE_TIME) && defined(LC_TIME)
977 # define USE_LOCALE_TIME
979 # if !defined(NO_LOCALE_ADDRESS) && defined(LC_ADDRESS)
980 # define USE_LOCALE_ADDRESS
982 # if !defined(NO_LOCALE_IDENTIFICATION) && defined(LC_IDENTIFICATION)
983 # define USE_LOCALE_IDENTIFICATION
985 # if !defined(NO_LOCALE_MEASUREMENT) && defined(LC_MEASUREMENT)
986 # define USE_LOCALE_MEASUREMENT
988 # if !defined(NO_LOCALE_PAPER) && defined(LC_PAPER)
989 # define USE_LOCALE_PAPER
991 # if !defined(NO_LOCALE_TELEPHONE) && defined(LC_TELEPHONE)
992 # define USE_LOCALE_TELEPHONE
994 # if !defined(NO_LOCALE_SYNTAX) && defined(LC_SYNTAX)
995 # define USE_LOCALE_SYNTAX
997 # if !defined(NO_LOCALE_TOD) && defined(LC_TOD)
998 # define USE_LOCALE_TOD
1001 /* XXX The next few defines are unfortunately duplicated in makedef.pl, and
1002 * changes here MUST also be made there */
1004 # if ! defined(HAS_SETLOCALE) && defined(HAS_POSIX_2008_LOCALE)
1005 # define USE_POSIX_2008_LOCALE
1006 # ifndef USE_THREAD_SAFE_LOCALE
1007 # define USE_THREAD_SAFE_LOCALE
1010 * -DUSE_THREAD_SAFE_LOCALE, will do so even
1011 * on unthreaded builds */
1012 # elif (defined(USE_ITHREADS) || defined(USE_THREAD_SAFE_LOCALE)) \
1013 && ( defined(HAS_POSIX_2008_LOCALE) \
1014 || (defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1400)) \
1015 && ! defined(NO_THREAD_SAFE_LOCALE)
1016 # ifndef USE_THREAD_SAFE_LOCALE
1017 # define USE_THREAD_SAFE_LOCALE
1019 # ifdef HAS_POSIX_2008_LOCALE
1020 # define USE_POSIX_2008_LOCALE
1025 /* Microsoft documentation reads in the change log for VS 2015:
1026 * "The localeconv function declared in locale.h now works correctly when
1027 * per-thread locale is enabled. In previous versions of the library, this
1028 * function would return the lconv data for the global locale, not the
1031 #if defined(WIN32) && defined(USE_THREAD_SAFE_LOCALE) && _MSC_VER < 1900
1032 # define TS_W32_BROKEN_LOCALECONV
1038 # ifdef PARAM_NEEDS_TYPES
1039 # include <sys/types.h>
1041 # include <sys/param.h>
1044 /* On BSD-derived systems, <sys/param.h> defines BSD to a year-month
1045 value something like 199306. This may be useful if no more-specific
1046 feature test is available.
1054 /* Use all the "standard" definitions */
1057 /* If this causes problems, set i_unistd=undef in the hint file. */
1059 # if defined(__amigaos4__)
1060 # ifdef I_NETINET_IN
1061 # include <netinet/in.h>
1064 # include <unistd.h>
1065 # if defined(__amigaos4__)
1066 /* Under AmigaOS 4 newlib.library provides an environ. However using
1067 * it doesn't give us enough control over inheritance of variables by
1068 * subshells etc. so replace with custom version based on abc-shell
1070 extern char **myenviron;
1072 # define environ myenviron
1078 # include <sys/wait.h>
1081 #if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO)
1082 EXTERN_C int syscall(int, ...);
1085 #if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO)
1086 EXTERN_C int usleep(unsigned int);
1089 /* Macros for correct constant construction. These are in C99 <stdint.h>
1090 * (so they will not be available in strict C89 mode), but they are nice, so
1091 * let's define them if necessary.
1092 =for apidoc_section $integer
1093 =for apidoc Am|I16|INT16_C|number
1094 =for apidoc_item |I32|INT32_C|number
1095 =for apidoc_item |I64|INT64_C|number
1097 Returns a token the C compiler recognizes for the constant C<number> of the
1098 corresponding integer type on the machine.
1100 If the machine does not have a 64-bit type, C<INT64_C> is undefined.
1101 Use C<L</INTMAX_C>> to get the largest type available on the platform.
1103 =for apidoc Am|U16|UINT16_C|number
1104 =for apidoc_item |U32|UINT32_C|number
1105 =for apidoc_item |U64|UINT64_C|number
1107 Returns a token the C compiler recognizes for the constant C<number> of the
1108 corresponding unsigned integer type on the machine.
1110 If the machine does not have a 64-bit type, C<UINT64_C> is undefined.
1111 Use C<L</UINTMAX_C>> to get the largest type available on the platform.
1118 # define UINT16_C(x) ((U16_TYPE)x##U)
1120 # define UINT16_C(x) ((U16_TYPE)x##UL)
1126 # define UINT32_C(x) ((U32_TYPE)x##U)
1128 # define UINT32_C(x) ((U32_TYPE)x##UL)
1133 typedef intmax_t PERL_INTMAX_T;
1134 typedef uintmax_t PERL_UINTMAX_T;
1137 /* N.B. We use QUADKIND here instead of HAS_QUAD here, because that doesn't
1138 * actually mean what it has always been documented to mean (see RT #119753)
1139 * and is explicitly turned off outside of core with dire warnings about
1140 * removing the undef. */
1142 #if defined(QUADKIND)
1143 # undef PeRl_INT64_C
1144 # undef PeRl_UINT64_C
1145 /* Prefer the native integer types (int and long) over long long
1146 * (which is not C89) and Win32-specific __int64. */
1147 # if QUADKIND == QUAD_IS_INT && INTSIZE == 8
1148 # define PeRl_INT64_C(c) (c)
1149 # define PeRl_UINT64_C(c) CAT2(c,U)
1151 # if QUADKIND == QUAD_IS_LONG && LONGSIZE == 8
1152 # define PeRl_INT64_C(c) CAT2(c,L)
1153 # define PeRl_UINT64_C(c) CAT2(c,UL)
1155 # if QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LONG_LONG)
1156 # define PeRl_INT64_C(c) CAT2(c,LL)
1157 # define PeRl_UINT64_C(c) CAT2(c,ULL)
1159 # if QUADKIND == QUAD_IS___INT64
1160 # define PeRl_INT64_C(c) CAT2(c,I64)
1161 # define PeRl_UINT64_C(c) CAT2(c,UI64)
1163 # ifndef PeRl_INT64_C
1164 # define PeRl_INT64_C(c) ((I64)(c)) /* last resort */
1165 # define PeRl_UINT64_C(c) ((U64TYPE)(c))
1167 /* In OS X the INT64_C/UINT64_C are defined with LL/ULL, which will
1168 * not fly with C89-pedantic gcc, so let's undefine them first so that
1169 * we can redefine them with our native integer preferring versions. */
1170 # if defined(PERL_DARWIN) && defined(PERL_GCC_PEDANTIC)
1175 # define INT64_C(c) PeRl_INT64_C(c)
1178 # define UINT64_C(c) PeRl_UINT64_C(c)
1182 =for apidoc_section $integer
1183 =for apidoc Am||INTMAX_C|number
1184 Returns a token the C compiler recognizes for the constant C<number> of the
1185 widest integer type on the machine. For example, if the machine has C<long
1186 long>s, C<INTMAX_C(-1)> would yield
1190 See also, for example, C<L</INT32_C>>.
1192 Use L</IV> to declare variables of the maximum usable size on this platform.
1194 =for apidoc Am||UINTMAX_C|number
1195 Returns a token the C compiler recognizes for the constant C<number> of the
1196 widest unsigned integer type on the machine. For example, if the machine has
1197 C<long>s, C<UINTMAX_C(1)> would yield
1201 See also, for example, C<L</UINT32_C>>.
1203 Use L</UV> to declare variables of the maximum usable size on this platform.
1209 typedef I64TYPE PERL_INTMAX_T;
1210 typedef U64TYPE PERL_UINTMAX_T;
1213 # define INTMAX_C(c) INT64_C(c)
1216 # define UINTMAX_C(c) UINT64_C(c)
1219 #else /* below QUADKIND is undefined */
1221 /* Perl doesn't work on 16 bit systems, so must be 32 bit */
1223 typedef I32TYPE PERL_INTMAX_T;
1224 typedef U32TYPE PERL_UINTMAX_T;
1227 # define INTMAX_C(c) INT32_C(c)
1230 # define UINTMAX_C(c) UINT32_C(c)
1233 #endif /* no QUADKIND */
1237 /* byte-swapping functions for big-/little-endian conversion */
1238 # define _swab_16_(x) ((U16)( \
1239 (((U16)(x) & UINT16_C(0x00ff)) << 8) | \
1240 (((U16)(x) & UINT16_C(0xff00)) >> 8) ))
1242 # define _swab_32_(x) ((U32)( \
1243 (((U32)(x) & UINT32_C(0x000000ff)) << 24) | \
1244 (((U32)(x) & UINT32_C(0x0000ff00)) << 8) | \
1245 (((U32)(x) & UINT32_C(0x00ff0000)) >> 8) | \
1246 (((U32)(x) & UINT32_C(0xff000000)) >> 24) ))
1249 # define _swab_64_(x) ((U64)( \
1250 (((U64)(x) & UINT64_C(0x00000000000000ff)) << 56) | \
1251 (((U64)(x) & UINT64_C(0x000000000000ff00)) << 40) | \
1252 (((U64)(x) & UINT64_C(0x0000000000ff0000)) << 24) | \
1253 (((U64)(x) & UINT64_C(0x00000000ff000000)) << 8) | \
1254 (((U64)(x) & UINT64_C(0x000000ff00000000)) >> 8) | \
1255 (((U64)(x) & UINT64_C(0x0000ff0000000000)) >> 24) | \
1256 (((U64)(x) & UINT64_C(0x00ff000000000000)) >> 40) | \
1257 (((U64)(x) & UINT64_C(0xff00000000000000)) >> 56) ))
1260 /* The old value was hard coded at 1008. (4096-16) seems to be a bit faster,
1261 at least on FreeBSD. YMMV, so experiment. */
1262 #ifndef PERL_ARENA_SIZE
1263 #define PERL_ARENA_SIZE 4080
1266 /* Maximum level of recursion */
1267 #ifndef PERL_SUB_DEPTH_WARN
1268 #define PERL_SUB_DEPTH_WARN 100
1271 #endif /* PERL_CORE */
1273 /* Maximum number of args that may be passed to an OP_MULTICONCAT op.
1274 * It determines the size of local arrays in S_maybe_multiconcat() and
1277 #define PERL_MULTICONCAT_MAXARG 64
1279 /* The indexes of fields of a multiconcat aux struct.
1280 * The fixed fields are followed by nargs+1 const segment lengths,
1281 * and if utf8 and non-utf8 differ, a second nargs+1 set for utf8.
1284 #define PERL_MULTICONCAT_IX_NARGS 0 /* number of arguments */
1285 #define PERL_MULTICONCAT_IX_PLAIN_PV 1 /* non-utf8 constant string */
1286 #define PERL_MULTICONCAT_IX_PLAIN_LEN 2 /* non-utf8 constant string length */
1287 #define PERL_MULTICONCAT_IX_UTF8_PV 3 /* utf8 constant string */
1288 #define PERL_MULTICONCAT_IX_UTF8_LEN 4 /* utf8 constant string length */
1289 #define PERL_MULTICONCAT_IX_LENGTHS 5 /* first of nargs+1 const segment lens */
1290 #define PERL_MULTICONCAT_HEADER_SIZE 5 /* The number of fields of a
1291 multiconcat header */
1293 /* We no longer default to creating a new SV for GvSV.
1294 Do this before embed. */
1295 #ifndef PERL_CREATE_GVSV
1296 # ifndef PERL_DONT_CREATE_GVSV
1297 # define PERL_DONT_CREATE_GVSV
1301 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
1302 #define PERL_USES_PL_PIDSTATUS
1305 #if !defined(OS2) && !defined(WIN32)
1306 #define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
1309 #define MEM_SIZE Size_t
1311 /* Round all values passed to malloc up, by default to a multiple of
1314 #ifndef PERL_STRLEN_ROUNDUP_QUANTUM
1315 #define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size
1318 /* sv_grow() will expand strings by at least a certain percentage of
1319 the previously *used* length to avoid excessive calls to realloc().
1320 The default is 25% of the current length.
1322 #ifndef PERL_STRLEN_EXPAND_SHIFT
1323 # define PERL_STRLEN_EXPAND_SHIFT 2
1326 /* This use of offsetof() requires /Zc:offsetof- for VS2017 (and presumably
1327 * onwards) when building Socket.xs, but we can just use a different definition
1328 * for STRUCT_OFFSET instead. */
1329 #if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1910
1330 # define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
1332 # include <stddef.h>
1333 # define STRUCT_OFFSET(s,m) offsetof(s,m)
1336 /* ptrdiff_t is C11, so undef it under pedantic builds. (Actually it is
1337 * in C89, but apparently there are platforms where it doesn't exist. See
1338 * thread beginning at http://nntp.perl.org/group/perl.perl5.porters/251541.)
1340 #ifdef PERL_GCC_PEDANTIC
1341 # undef HAS_PTRDIFF_T
1344 #ifdef HAS_PTRDIFF_T
1345 # define Ptrdiff_t ptrdiff_t
1347 # define Ptrdiff_t SSize_t
1350 # include <string.h>
1352 /* This comes after <stdlib.h> so we don't try to change the standard
1353 * library prototypes; we'll use our own in proto.h instead. */
1356 # ifdef PERL_POLLUTE_MALLOC
1357 # ifndef PERL_EXTMALLOC_DEF
1358 # define Perl_malloc malloc
1359 # define Perl_calloc calloc
1360 # define Perl_realloc realloc
1361 # define Perl_mfree free
1364 # define EMBEDMYMALLOC /* for compatibility */
1367 # define safemalloc Perl_malloc
1368 # define safecalloc Perl_calloc
1369 # define saferealloc Perl_realloc
1370 # define safefree Perl_mfree
1371 # define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \
1372 if (!TAINTING_get && MallocCfg_ptr[MallocCfg_cfg_env_read]) \
1375 # define CHECK_MALLOC_TOO_LATE_FOR(ch) \
1376 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch))
1377 # define panic_write2(s) write(2, s, strlen(s))
1378 # define CHECK_MALLOC_TAINT(newval) \
1379 CHECK_MALLOC_TOO_LATE_FOR_( \
1381 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\
1383 # define MALLOC_CHECK_TAINT(argc,argv,env) STMT_START { \
1384 if (doing_taint(argc,argv,env)) { \
1385 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \
1387 #else /* MYMALLOC */
1388 # define safemalloc safesysmalloc
1389 # define safecalloc safesyscalloc
1390 # define saferealloc safesysrealloc
1391 # define safefree safesysfree
1392 # define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0)
1393 # define CHECK_MALLOC_TAINT(newval) ((void)0)
1394 # define MALLOC_CHECK_TAINT(argc,argv,env)
1395 #endif /* MYMALLOC */
1397 /* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */
1398 #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)
1399 #define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "")
1400 #define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
1401 #define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
1404 =for apidoc Am|void|memzero|void * d|Size_t l
1405 Set the C<l> bytes starting at C<*d> to all zeroes.
1410 # define memzero(d,l) memset(d,0,l)
1414 # include <netinet/in.h>
1418 # include <arpa/inet.h>
1422 # include <sys/stat.h>
1425 /* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO.
1426 This definition should ideally go into win32/win32.h, but S_IFIFO is
1427 used later here in perl.h before win32/win32.h is being included. */
1428 #if !defined(S_IFIFO) && defined(_S_IFIFO)
1429 # define S_IFIFO _S_IFIFO
1432 /* The stat macros for Unisoft System V/88 (and derivatives
1433 like UTekV) are broken, sometimes giving false positives. Undefine
1434 them here and let the code below set them to proper values.
1436 The ghs macro stands for GreenHills Software C-1.8.5 which
1437 is the C compiler for sysV88 and the various derivatives.
1438 This header file bug is corrected in gcc-2.5.8 and later versions.
1439 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
1441 #if defined(m88k) && defined(ghs)
1453 # ifdef I_SYS_TIME_KERNEL
1456 # include <sys/time.h>
1457 # ifdef I_SYS_TIME_KERNEL
1462 #if defined(HAS_TIMES) && defined(I_SYS_TIMES)
1463 # include <sys/times.h>
1468 #if defined(WIN32) && defined(PERL_IMPLICIT_SYS)
1469 # define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
1472 #if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */
1473 # include <sys/socket.h>
1474 # if defined(USE_SOCKS) && defined(I_SOCKS)
1475 # if !defined(INCLUDE_PROTOTYPES)
1476 # define INCLUDE_PROTOTYPES /* for <socks.h> */
1477 # define PERL_SOCKS_NEED_PROTOTYPES
1480 # ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
1481 # undef INCLUDE_PROTOTYPES
1482 # undef PERL_SOCKS_NEED_PROTOTYPES
1490 # include <net/errno.h>
1495 /* sockatmark() is so new (2001) that many places might have it hidden
1496 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required
1497 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */
1498 #if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO)
1499 # if defined(__THROW) && defined(__GLIBC__)
1500 int sockatmark(int) __THROW;
1502 int sockatmark(int);
1506 #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. */
1507 EXTERN_C int fchdir(int);
1508 EXTERN_C int flock(int, int);
1509 EXTERN_C int fseeko(FILE *, off_t, int);
1510 EXTERN_C off_t ftello(FILE *);
1513 #if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */
1514 EXTERN_C char *crypt(const char *, const char *);
1517 #if defined(__cplusplus) && defined(__CYGWIN__)
1518 EXTERN_C char *crypt(const char *, const char *);
1522 =for apidoc_section $errno
1524 =for apidoc m|void|SETERRNO|int errcode|int vmserrcode
1526 Set C<errno>, and on VMS set C<vaxc$errno>.
1528 =for apidoc mn|void|dSAVEDERRNO
1530 Declare variables needed to save C<errno> and any operating system
1531 specific error number.
1533 =for apidoc mn|void|dSAVE_ERRNO
1535 Declare variables needed to save C<errno> and any operating system
1536 specific error number, and save them for optional later restoration
1537 by C<RESTORE_ERRNO>.
1539 =for apidoc mn|void|SAVE_ERRNO
1541 Save C<errno> and any operating system specific error number for
1542 optional later restoration by C<RESTORE_ERRNO>. Requires
1543 C<dSAVEDERRNO> or C<dSAVE_ERRNO> in scope.
1545 =for apidoc mn|void|RESTORE_ERRNO
1547 Restore C<errno> and any operating system specific error number that
1548 was saved by C<dSAVE_ERRNO> or C<RESTORE_ERRNO>.
1554 # undef SETERRNO /* SOCKS might have defined this */
1558 # define SETERRNO(errcode,vmserrcode) \
1560 set_errno(errcode); \
1561 set_vaxc_errno(vmserrcode); \
1563 # define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno
1564 # define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno
1565 # define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno )
1566 # define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno)
1568 # define LIB_INVARG LIB$_INVARG
1569 # define RMS_DIR RMS$_DIR
1570 # define RMS_FAC RMS$_FAC
1571 # define RMS_FEX RMS$_FEX
1572 # define RMS_FNF RMS$_FNF
1573 # define RMS_IFI RMS$_IFI
1574 # define RMS_ISI RMS$_ISI
1575 # define RMS_PRV RMS$_PRV
1576 # define SS_ACCVIO SS$_ACCVIO
1577 # define SS_DEVOFFLINE SS$_DEVOFFLINE
1578 # define SS_IVCHAN SS$_IVCHAN
1579 # define SS_NORMAL SS$_NORMAL
1580 # define SS_NOPRIV SS$_NOPRIV
1581 # define SS_BUFFEROVF SS$_BUFFEROVF
1583 # define LIB_INVARG 0
1591 # define SS_ACCVIO 0
1592 # define SS_DEVOFFLINE 0
1593 # define SS_IVCHAN 0
1594 # define SS_NORMAL 0
1595 # define SS_NOPRIV 0
1596 # define SS_BUFFEROVF 0
1600 # define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno
1601 # define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError()
1602 # define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() )
1603 # define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) )
1607 # define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno
1608 # define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc
1609 # define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc )
1610 # define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno )
1614 # define SETERRNO(errcode,vmserrcode) (errno = (errcode))
1618 # define dSAVEDERRNO int saved_errno
1619 # define dSAVE_ERRNO int saved_errno = errno
1620 # define SAVE_ERRNO (saved_errno = errno)
1621 # define RESTORE_ERRNO (errno = saved_errno)
1625 =for apidoc_section $warning
1627 =for apidoc Amn|SV *|ERRSV
1629 Returns the SV for C<$@>, creating it if needed.
1631 =for apidoc Am|void|CLEAR_ERRSV
1633 Clear the contents of C<$@>, setting it to the empty string.
1635 This replaces any read-only SV with a fresh SV and removes any magic.
1637 =for apidoc Am|void|SANE_ERRSV
1639 Clean up ERRSV so we can safely set it.
1641 This replaces any read-only SV with a fresh writable copy and removes
1647 #define ERRSV GvSVn(PL_errgv)
1649 /* contains inlined gv_add_by_type */
1650 #define CLEAR_ERRSV() STMT_START { \
1651 SV ** const svp = &GvSV(PL_errgv); \
1653 *svp = newSVpvs(""); \
1654 } else if (SvREADONLY(*svp)) { \
1655 SvREFCNT_dec_NN(*svp); \
1656 *svp = newSVpvs(""); \
1658 SV *const errsv = *svp; \
1660 SvPOK_only(errsv); \
1661 if (SvMAGICAL(errsv)) { \
1667 /* contains inlined gv_add_by_type */
1668 #define SANE_ERRSV() STMT_START { \
1669 SV ** const svp = &GvSV(PL_errgv); \
1671 *svp = newSVpvs(""); \
1672 } else if (SvREADONLY(*svp)) { \
1673 SV *dupsv = newSVsv(*svp); \
1674 SvREFCNT_dec_NN(*svp); \
1677 SV *const errsv = *svp; \
1678 if (SvMAGICAL(errsv)) { \
1686 # define DEFSV (0 + GvSVn(PL_defgv))
1687 # define DEFSV_set(sv) \
1688 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv))
1689 # define SAVE_DEFSV \
1691 save_gp(PL_defgv, 0), \
1692 GvINTRO_off(PL_defgv), \
1693 SAVEGENERICSV(GvSV(PL_defgv)), \
1694 GvSV(PL_defgv) = NULL \
1697 # define DEFSV GvSVn(PL_defgv)
1698 # define DEFSV_set(sv) (GvSV(PL_defgv) = (sv))
1699 # define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
1703 =for apidoc_section $SV
1704 =for apidoc Amn|SV *|DEFSV
1705 Returns the SV associated with C<$_>
1707 =for apidoc Am|void|DEFSV_set|SV * sv
1708 Associate C<sv> with C<$_>
1710 =for apidoc Amn|void|SAVE_DEFSV
1711 Localize C<$_>. See L<perlguts/Localizing changes>.
1717 extern int errno; /* ANSI allows errno to be an lvalue expr.
1718 * For example in multithreaded environments
1719 * something like this might happen:
1720 * extern int *_errno(void);
1721 * #define errno (*_errno()) */
1724 #define UNKNOWN_ERRNO_MSG "(unknown)"
1727 #define Strerror(e) strerror((e), vaxc$errno)
1729 #define Strerror(e) strerror(e)
1734 # include <sys/ioctl.h>
1738 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
1739 # ifdef HAS_SOCKETPAIR
1740 # undef HAS_SOCKETPAIR
1747 #ifndef HAS_SOCKETPAIR
1749 # define socketpair Perl_my_socketpair
1754 # define htoni htons
1755 # define ntohi ntohs
1757 # define htoni htonl
1758 # define ntohi ntohl
1761 /* Configure already sets Direntry_t */
1762 #if defined(I_DIRENT)
1763 # include <dirent.h>
1764 #elif defined(I_SYS_NDIR)
1765 # include <sys/ndir.h>
1766 #elif defined(I_SYS_DIR)
1767 # include <sys/dir.h>
1771 * The following gobbledygook brought to you on behalf of __STDC__.
1772 * (I could just use #ifndef __STDC__, but this is more bulletproof
1773 * in the face of half-implementations.)
1776 #if defined(I_SYSMODE)
1777 #include <sys/mode.h>
1782 # define S_IFMT _S_IFMT
1784 # define S_IFMT 0170000
1789 # define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
1793 # define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
1798 # define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
1800 # define S_ISBLK(m) (0)
1805 # define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
1810 # define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
1812 # define S_ISFIFO(m) (0)
1818 # define S_ISLNK(m) _S_ISLNK(m)
1819 # elif defined(_S_IFLNK)
1820 # define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
1821 # elif defined(S_IFLNK)
1822 # define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
1824 # define S_ISLNK(m) (0)
1830 # define S_ISSOCK(m) _S_ISSOCK(m)
1831 # elif defined(_S_IFSOCK)
1832 # define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
1833 # elif defined(S_IFSOCK)
1834 # define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
1836 # define S_ISSOCK(m) (0)
1842 # define S_IRUSR S_IREAD
1843 # define S_IWUSR S_IWRITE
1844 # define S_IXUSR S_IEXEC
1846 # define S_IRUSR 0400
1847 # define S_IWUSR 0200
1848 # define S_IXUSR 0100
1854 # define S_IRGRP (S_IRUSR>>3)
1855 # define S_IWGRP (S_IWUSR>>3)
1856 # define S_IXGRP (S_IXUSR>>3)
1858 # define S_IRGRP 0040
1859 # define S_IWGRP 0020
1860 # define S_IXGRP 0010
1866 # define S_IROTH (S_IRUSR>>6)
1867 # define S_IWOTH (S_IWUSR>>6)
1868 # define S_IXOTH (S_IXUSR>>6)
1870 # define S_IROTH 0040
1871 # define S_IWOTH 0020
1872 # define S_IXOTH 0010
1877 # define S_ISUID 04000
1881 # define S_ISGID 02000
1885 # define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
1889 # define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
1893 # define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
1896 /* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h>
1897 * which would get included through <sys/file.h >, but that is 3000
1898 * lines in the future. --jhi */
1900 #if !defined(S_IREAD) && !defined(__HAIKU__)
1901 # define S_IREAD S_IRUSR
1904 #if !defined(S_IWRITE) && !defined(__HAIKU__)
1905 # define S_IWRITE S_IWUSR
1909 # define S_IEXEC S_IXUSR
1912 #if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
1913 # define SLOPPYDIVIDE
1920 /* This used to be conditionally defined based on whether we had a sprintf()
1921 * that correctly returns the string length (as required by C89), but we no
1922 * longer need that. XS modules can (and do) use this name, so it must remain
1923 * a part of the API that's visible to modules.
1925 =for apidoc_section $string
1926 =for apidoc ATmD|int|my_sprintf|NN char *buffer|NN const char *pat|...
1928 Do NOT use this due to the possibility of overflowing C<buffer>. Instead use
1933 #define my_sprintf sprintf
1936 * If we have v?snprintf() and the C99 variadic macros, we can just
1937 * use just the v?snprintf(). It is nice to try to trap the buffer
1938 * overflow, however, so if we are DEBUGGING, and we cannot use the
1939 * gcc statement expressions, then use the function wrappers which try
1940 * to trap the overflow. If we can use the gcc statement expressions,
1941 * we can try that even with the version that uses the C99 variadic
1945 /* Note that we do not check against snprintf()/vsnprintf() returning
1946 * negative values because that is non-standard behaviour and we use
1947 * snprintf/vsnprintf only iff HAS_VSNPRINTF has been defined, and
1948 * that should be true only if the snprintf()/vsnprintf() are true
1949 * to the standard. */
1951 #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
1954 # define my_snprintf Perl_my_snprintf
1955 # define PERL_MY_SNPRINTF_GUARDED
1956 #elif defined(HAS_SNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
1957 # ifdef PERL_USE_GCC_BRACE_GROUPS
1958 # define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; })
1959 # define PERL_MY_SNPRINTF_GUARDED
1961 # define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__)
1964 # define my_snprintf Perl_my_snprintf
1965 # define PERL_MY_SNPRINTF_GUARDED
1968 /* There is no quadmath_vsnprintf, and therefore my_vsnprintf()
1969 * dies if called under USE_QUADMATH. */
1970 #if defined(HAS_VSNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
1971 # ifdef PERL_USE_GCC_BRACE_GROUPS
1972 # define my_vsnprintf(buffer, max, ...) ({ int len = vsnprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, vsnprintf); len; })
1973 # define PERL_MY_VSNPRINTF_GUARDED
1975 # define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__)
1978 # define my_vsnprintf Perl_my_vsnprintf
1979 # define PERL_MY_VSNPRINTF_GUARDED
1982 /* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD()
1983 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore
1984 * the result of my_snprintf() or my_vsnprintf(). (No, you should not
1985 * completely ignore it: otherwise you cannot know whether your output
1988 * int len = my_sprintf(buf, max, ...);
1989 * PERL_MY_SNPRINTF_POST_GUARD(len, max);
1991 * The trick is that in certain platforms [a] the my_sprintf() already
1992 * contains the sanity check, while in certain platforms [b] it needs
1993 * to be done as a separate step. The POST_GUARD is that step-- in [a]
1994 * platforms the POST_GUARD actually does nothing since the check has
1995 * already been done. Watch out for the max being the same in both calls.
1997 * If you actually use the snprintf/vsnprintf return value already,
1998 * you assumedly are checking its validity somehow. But you can
1999 * insert the POST_GUARD() also in that case. */
2001 #ifndef PERL_MY_SNPRINTF_GUARDED
2002 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf)
2004 # define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
2007 #ifndef PERL_MY_VSNPRINTF_GUARDED
2008 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf)
2010 # define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
2014 # define my_strlcat strlcat
2017 #if defined(PERL_CORE) || defined(PERL_EXT)
2019 # define my_memrchr memrchr
2021 # define my_memrchr S_my_memrchr
2026 # define my_strlcpy strlcpy
2030 # define my_strnlen strnlen
2034 The IV type is supposed to be long enough to hold any integral
2036 --Andy Dougherty August 1996
2042 #if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
2043 # if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
2044 # define IV_MAX ((IV)INT64_MAX)
2045 # define IV_MIN ((IV)INT64_MIN)
2046 # define UV_MAX ((UV)UINT64_MAX)
2048 # define UINT64_MIN 0
2050 # define UV_MIN ((UV)UINT64_MIN)
2052 # define IV_MAX PERL_QUAD_MAX
2053 # define IV_MIN PERL_QUAD_MIN
2054 # define UV_MAX PERL_UQUAD_MAX
2055 # define UV_MIN PERL_UQUAD_MIN
2060 # if defined(INT32_MAX) && IVSIZE == 4
2061 # define IV_MAX ((IV)INT32_MAX)
2062 # define IV_MIN ((IV)INT32_MIN)
2063 # ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
2064 # define UV_MAX ((UV)UINT32_MAX)
2066 # define UV_MAX ((UV)4294967295U)
2069 # define UINT32_MIN 0
2071 # define UV_MIN ((UV)UINT32_MIN)
2073 # define IV_MAX PERL_LONG_MAX
2074 # define IV_MIN PERL_LONG_MIN
2075 # define UV_MAX PERL_ULONG_MAX
2076 # define UV_MIN PERL_ULONG_MIN
2087 #if !defined(PERL_CORE)
2088 /* We think that removing this decade-old undef this will cause too much
2089 breakage on CPAN for too little gain. (See RT #119753)
2090 However, we do need HAS_QUAD in the core for use by the drand48 code. */
2096 #define Size_t_MAX (~(Size_t)0)
2097 #define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1)
2099 #define IV_DIG (BIT_DIGITS(IVSIZE * 8))
2100 #define UV_DIG (BIT_DIGITS(UVSIZE * 8))
2102 #ifndef NO_PERL_PRESERVE_IVUV
2103 #define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */
2107 * The macros INT2PTR and NUM2PTR are (despite their names)
2108 * bi-directional: they will convert int/float to or from pointers.
2109 * However the conversion to int/float are named explicitly:
2110 * PTR2IV, PTR2UV, PTR2NV.
2112 * For int conversions we do not need two casts if pointers are
2113 * the same size as IV and UV. Otherwise we need an explicit
2114 * cast (PTRV) to avoid compiler warnings.
2116 * These are mentioned in perlguts
2118 #if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
2120 # define INT2PTR(any,d) (any)(d)
2121 #elif PTRSIZE == LONGSIZE
2122 # define PTRV unsigned long
2123 # define PTR2ul(p) (unsigned long)(p)
2125 # define PTRV unsigned
2129 # define INT2PTR(any,d) (any)(PTRV)(d)
2133 # define PTR2ul(p) INT2PTR(unsigned long,p)
2137 =for apidoc_section Casting
2138 =for apidoc Cyh|type|NUM2PTR|type|int value
2139 You probably want to be using L<C</INT2PTR>> instead.
2144 #define NUM2PTR(any,d) (any)(PTRV)(d)
2145 #define PTR2IV(p) INT2PTR(IV,p)
2146 #define PTR2UV(p) INT2PTR(UV,p)
2147 #define PTR2NV(p) NUM2PTR(NV,p)
2148 #define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */
2150 /* According to strict ANSI C89 one cannot freely cast between
2151 * data pointers and function (code) pointers. There are at least
2152 * two ways around this. One (used below) is to do two casts,
2153 * first the other pointer to an (unsigned) integer, and then
2154 * the integer to the other pointer. The other way would be
2155 * to use unions to "overlay" the pointers. For an example of
2156 * the latter technique, see union dirpu in struct xpvio in sv.h.
2157 * The only feasible use is probably temporarily storing
2158 * function pointers in a data pointer (such as a void pointer). */
2160 #define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */
2161 #define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */
2163 #ifdef USE_LONG_DOUBLE
2164 # if LONG_DOUBLESIZE == DOUBLESIZE
2165 # define LONG_DOUBLE_EQUALS_DOUBLE
2166 # undef USE_LONG_DOUBLE /* Ouch! */
2170 /* The following is all to get LDBL_DIG, in order to pick a nice
2171 default value for printing floating point numbers in Gconvert.
2174 #ifndef HAS_LDBL_DIG
2175 # if LONG_DOUBLESIZE == 10
2176 # define LDBL_DIG 18 /* assume IEEE */
2177 # elif LONG_DOUBLESIZE == 12
2178 # define LDBL_DIG 18 /* gcc? */
2179 # elif LONG_DOUBLESIZE == 16
2180 # define LDBL_DIG 33 /* assume IEEE */
2181 # elif LONG_DOUBLESIZE == DOUBLESIZE
2182 # define LDBL_DIG DBL_DIG /* bummer */
2186 /* On MS Windows,with 64-bit mingw-w64 compilers, we
2187 need to attend to a __float128 alignment issue if
2188 USE_QUADMATH is defined. Otherwise we simply:
2190 32-bit mingw.org compilers might also require
2191 aligned(32) - at least that's what I found with my
2192 Math::Foat128 module. But this is as yet untested
2193 here, so no allowance is being made for mingw.org
2194 compilers at this stage. -- sisyphus January 2021
2196 #if defined(USE_QUADMATH) && defined(__MINGW64__)
2197 /* 64-bit build, mingw-w64 compiler only */
2198 typedef NVTYPE NV __attribute__ ((aligned(8)));
2204 # include <ieeefp.h>
2207 #if defined(__DECC) && defined(__osf__)
2208 /* Also Tru64 cc has broken NaN comparisons. */
2209 # define NAN_COMPARE_BROKEN
2212 # define NAN_COMPARE_BROKEN
2215 #ifdef USE_LONG_DOUBLE
2217 # include <sunmath.h>
2219 # if defined(LDBL_DIG)
2220 # define NV_DIG LDBL_DIG
2221 # ifdef LDBL_MANT_DIG
2222 # define NV_MANT_DIG LDBL_MANT_DIG
2225 # define NV_MIN LDBL_MIN
2228 # define NV_MAX LDBL_MAX
2230 # ifdef LDBL_MIN_EXP
2231 # define NV_MIN_EXP LDBL_MIN_EXP
2233 # ifdef LDBL_MAX_EXP
2234 # define NV_MAX_EXP LDBL_MAX_EXP
2236 # ifdef LDBL_MIN_10_EXP
2237 # define NV_MIN_10_EXP LDBL_MIN_10_EXP
2239 # ifdef LDBL_MAX_10_EXP
2240 # define NV_MAX_10_EXP LDBL_MAX_10_EXP
2242 # ifdef LDBL_EPSILON
2243 # define NV_EPSILON LDBL_EPSILON
2246 # define NV_MAX LDBL_MAX
2247 /* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */
2248 # elif defined(HUGE_VALL)
2249 # define NV_MAX HUGE_VALL
2252 # if defined(HAS_SQRTL)
2253 # define Perl_acos acosl
2254 # define Perl_asin asinl
2255 # define Perl_atan atanl
2256 # define Perl_atan2 atan2l
2257 # define Perl_ceil ceill
2258 # define Perl_cos cosl
2259 # define Perl_cosh coshl
2260 # define Perl_exp expl
2261 # define Perl_fabs fabsl
2262 # define Perl_floor floorl
2263 # define Perl_fmod fmodl
2264 # define Perl_log logl
2265 # define Perl_log10 log10l
2266 # define Perl_pow powl
2267 # define Perl_sin sinl
2268 # define Perl_sinh sinhl
2269 # define Perl_sqrt sqrtl
2270 # define Perl_tan tanl
2271 # define Perl_tanh tanhl
2273 /* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */
2276 # define Perl_modf(x,y) modfl(x,y)
2277 /* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no
2278 prototype in <math.h> */
2279 # ifndef HAS_MODFL_PROTO
2280 EXTERN_C long double modfl(long double, long double *);
2282 # elif (defined(HAS_TRUNCL) || defined(HAS_AINTL)) && defined(HAS_COPYSIGNL)
2283 extern long double Perl_my_modfl(long double x, long double *ip);
2284 # define Perl_modf(x,y) Perl_my_modfl(x,y)
2289 # define Perl_frexp(x,y) frexpl(x,y)
2290 # elif defined(HAS_ILOGBL) && defined(HAS_SCALBNL)
2291 extern long double Perl_my_frexpl(long double x, int *e);
2292 # define Perl_frexp(x,y) Perl_my_frexpl(x,y)
2297 # define Perl_ldexp(x, y) ldexpl(x,y)
2298 # elif defined(HAS_SCALBNL) && FLT_RADIX == 2
2299 # define Perl_ldexp(x,y) scalbnl(x,y)
2303 # if defined(HAS_ISNANL) && !(defined(isnan) && defined(HAS_C99))
2304 # define Perl_isnan(x) isnanl(x)
2305 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2306 # define Perl_isnan(x) isnan(x)
2310 # if defined(HAS_ISINFL) && !(defined(isinf) && defined(HAS_C99))
2311 # define Perl_isinf(x) isinfl(x)
2312 # elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
2313 # define Perl_isinf(x) isinf(x)
2314 # elif defined(LDBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2315 # define Perl_isinf(x) ((x) > LDBL_MAX || (x) < -LDBL_MAX)
2318 # ifndef Perl_isfinite
2319 # define Perl_isfinite(x) Perl_isfinitel(x)
2321 #elif defined(USE_QUADMATH) && defined(I_QUADMATH)
2322 # include <quadmath.h>
2323 # define NV_DIG FLT128_DIG
2324 # define NV_MANT_DIG FLT128_MANT_DIG
2325 # define NV_MIN FLT128_MIN
2326 # define NV_MAX FLT128_MAX
2327 # define NV_MIN_EXP FLT128_MIN_EXP
2328 # define NV_MAX_EXP FLT128_MAX_EXP
2329 # define NV_EPSILON FLT128_EPSILON
2330 # define NV_MIN_10_EXP FLT128_MIN_10_EXP
2331 # define NV_MAX_10_EXP FLT128_MAX_10_EXP
2332 # define Perl_acos acosq
2333 # define Perl_asin asinq
2334 # define Perl_atan atanq
2335 # define Perl_atan2 atan2q
2336 # define Perl_ceil ceilq
2337 # define Perl_cos cosq
2338 # define Perl_cosh coshq
2339 # define Perl_exp expq
2340 # define Perl_fabs fabsq
2341 # define Perl_floor floorq
2342 # define Perl_fmod fmodq
2343 # define Perl_log logq
2344 # define Perl_log10 log10q
2345 # define Perl_signbit signbitq
2346 # define Perl_pow powq
2347 # define Perl_sin sinq
2348 # define Perl_sinh sinhq
2349 # define Perl_sqrt sqrtq
2350 # define Perl_tan tanq
2351 # define Perl_tanh tanhq
2352 # define Perl_modf(x,y) modfq(x,y)
2353 # define Perl_frexp(x,y) frexpq(x,y)
2354 # define Perl_ldexp(x, y) ldexpq(x,y)
2355 # define Perl_isinf(x) isinfq(x)
2356 # define Perl_isnan(x) isnanq(x)
2357 # define Perl_isfinite(x) !(isnanq(x) || isinfq(x))
2358 # define Perl_fp_class(x) ((x) == 0.0Q ? 0 : isinfq(x) ? 3 : isnanq(x) ? 4 : PERL_ABS(x) < FLT128_MIN ? 2 : 1)
2359 # define Perl_fp_class_inf(x) (Perl_fp_class(x) == 3)
2360 # define Perl_fp_class_nan(x) (Perl_fp_class(x) == 4)
2361 # define Perl_fp_class_norm(x) (Perl_fp_class(x) == 1)
2362 # define Perl_fp_class_denorm(x) (Perl_fp_class(x) == 2)
2363 # define Perl_fp_class_zero(x) (Perl_fp_class(x) == 0)
2365 # define NV_DIG DBL_DIG
2366 # define NV_MANT_DIG DBL_MANT_DIG
2367 # define NV_MIN DBL_MIN
2368 # define NV_MAX DBL_MAX
2369 # define NV_MIN_EXP DBL_MIN_EXP
2370 # define NV_MAX_EXP DBL_MAX_EXP
2371 # define NV_MIN_10_EXP DBL_MIN_10_EXP
2372 # define NV_MAX_10_EXP DBL_MAX_10_EXP
2373 # define NV_EPSILON DBL_EPSILON
2374 # define NV_MAX DBL_MAX
2375 # define NV_MIN DBL_MIN
2377 /* These math interfaces are C89. */
2378 # define Perl_acos acos
2379 # define Perl_asin asin
2380 # define Perl_atan atan
2381 # define Perl_atan2 atan2
2382 # define Perl_ceil ceil
2383 # define Perl_cos cos
2384 # define Perl_cosh cosh
2385 # define Perl_exp exp
2386 # define Perl_fabs fabs
2387 # define Perl_floor floor
2388 # define Perl_fmod fmod
2389 # define Perl_log log
2390 # define Perl_log10 log10
2391 # define Perl_pow pow
2392 # define Perl_sin sin
2393 # define Perl_sinh sinh
2394 # define Perl_sqrt sqrt
2395 # define Perl_tan tan
2396 # define Perl_tanh tanh
2398 # define Perl_modf(x,y) modf(x,y)
2399 # define Perl_frexp(x,y) frexp(x,y)
2400 # define Perl_ldexp(x,y) ldexp(x,y)
2404 # define Perl_isnan(x) isnan(x)
2408 # if defined(HAS_ISINF)
2409 # define Perl_isinf(x) isinf(x)
2410 # elif defined(DBL_MAX) && !defined(NAN_COMPARE_BROKEN)
2411 # define Perl_isinf(x) ((x) > DBL_MAX || (x) < -DBL_MAX)
2414 # ifndef Perl_isfinite
2415 # ifdef HAS_ISFINITE
2416 # define Perl_isfinite(x) isfinite(x)
2417 # elif defined(HAS_FINITE)
2418 # define Perl_isfinite(x) finite(x)
2423 /* fpclassify(): C99. It is supposed to be a macro that switches on
2424 * the sizeof() of its argument, so there's no need for e.g. fpclassifyl().*/
2425 #if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
2427 # if defined(FP_INFINITE) && defined(FP_NAN)
2428 # define Perl_fp_class(x) fpclassify(x)
2429 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2430 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2431 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2432 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2433 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2434 # elif defined(FP_PLUS_INF) && defined(FP_QNAN)
2435 /* Some versions of HP-UX (10.20) have (only) fpclassify() but which is
2436 * actually not the C99 fpclassify, with its own set of return defines. */
2437 # define Perl_fp_class(x) fpclassify(x)
2438 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2439 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2440 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2441 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2442 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2443 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2444 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2445 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2446 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2447 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2449 # undef Perl_fp_class /* Unknown set of defines */
2453 /* fp_classify(): Legacy: VMS, maybe Unicos? The values, however,
2454 * are identical to the C99 fpclassify(). */
2455 #if !defined(Perl_fp_class) && defined(HAS_FP_CLASSIFY)
2458 /* FP_INFINITE and others are here rather than in math.h as C99 stipulates */
2460 /* oh, and the isnormal macro has a typo in it! */
2462 # define isnormal(x) Perl_fp_class_norm(x)
2464 # if defined(FP_INFINITE) && defined(FP_NAN)
2465 # define Perl_fp_class(x) fp_classify(x)
2466 # define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2467 # define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2468 # define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2469 # define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2470 # define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2472 # undef Perl_fp_class /* Unknown set of defines */
2476 /* Feel free to check with me for the SGI manpages, SGI testing,
2477 * etcetera, if you want to try getting this to work with IRIX.
2479 * - Allen <allens@cpan.org> */
2481 /* fpclass(): SysV, at least Solaris and some versions of IRIX. */
2482 #if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
2483 /* Solaris and IRIX have fpclass/fpclassl, but they are using
2484 * an enum typedef, not cpp symbols, and Configure doesn't detect that.
2485 * Define some symbols also as cpp symbols so we can detect them. */
2486 # if defined(__sun) || defined(__sgi) /* XXX Configure test instead */
2487 # define FP_PINF FP_PINF
2488 # define FP_QNAN FP_QNAN
2492 # include <ieeefp.h>
2497 # if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
2498 # define Perl_fp_class(x) fpclassl(x)
2500 # define Perl_fp_class(x) fpclass(x)
2502 # if defined(FP_CLASS_PINF) && defined(FP_CLASS_SNAN)
2503 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
2504 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
2505 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
2506 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
2507 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
2508 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
2509 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
2510 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
2511 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
2512 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
2513 # elif defined(FP_PINF) && defined(FP_QNAN)
2514 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2515 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2516 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NINF)
2517 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PINF)
2518 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NNORM)
2519 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PNORM)
2520 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NDENORM)
2521 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PDENORM)
2522 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NZERO)
2523 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PZERO)
2525 # undef Perl_fp_class /* Unknown set of defines */
2529 /* fp_class(): Legacy: at least Tru64, some versions of IRIX. */
2530 #if !defined(Perl_fp_class) && (defined(HAS_FP_CLASS)||defined(HAS_FP_CLASSL))
2532 # if !defined(FP_SNAN) && defined(I_FP_CLASS)
2533 # include <fp_class.h>
2535 # if defined(FP_POS_INF) && defined(FP_QNAN)
2536 # ifdef __sgi /* XXX Configure test instead */
2537 # ifdef USE_LONG_DOUBLE
2538 # define Perl_fp_class(x) fp_class_l(x)
2540 # define Perl_fp_class(x) fp_class_d(x)
2543 # if defined(USE_LONG_DOUBLE) && defined(HAS_FP_CLASSL)
2544 # define Perl_fp_class(x) fp_classl(x)
2546 # define Perl_fp_class(x) fp_class(x)
2549 # if defined(FP_POS_INF) && defined(FP_QNAN)
2550 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2551 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2552 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NEG_INF)
2553 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_POS_INF)
2554 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NEG_NORM)
2555 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_POS_NORM)
2556 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NEG_DENORM)
2557 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_POS_DENORM)
2558 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NEG_ZERO)
2559 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_POS_ZERO)
2561 # undef Perl_fp_class /* Unknown set of defines */
2566 /* class(), _class(): Legacy: AIX. */
2567 #if !defined(Perl_fp_class) && defined(HAS_CLASS)
2569 # if defined(FP_PLUS_NORM) && defined(FP_PLUS_INF)
2571 # define Perl_fp_class(x) class(x)
2573 # define Perl_fp_class(x) _class(x)
2575 # if defined(FP_PLUS_INF) && defined(FP_NANQ)
2576 # define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
2577 # define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
2578 # define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2579 # define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2580 # define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2581 # define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2582 # define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2583 # define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2584 # define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2585 # define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2587 # undef Perl_fp_class /* Unknown set of defines */
2592 /* Win32: _fpclass(), _isnan(), _finite(). */
2595 # define Perl_isnan(x) _isnan(x)
2597 # ifndef Perl_isfinite
2598 # define Perl_isfinite(x) _finite(x)
2600 # ifndef Perl_fp_class_snan
2601 /* No simple way to #define Perl_fp_class because _fpclass()
2602 * returns a set of bits. */
2603 # define Perl_fp_class_snan(x) (_fpclass(x) & _FPCLASS_SNAN)
2604 # define Perl_fp_class_qnan(x) (_fpclass(x) & _FPCLASS_QNAN)
2605 # define Perl_fp_class_nan(x) (_fpclass(x) & (_FPCLASS_SNAN|_FPCLASS_QNAN))
2606 # define Perl_fp_class_ninf(x) (_fpclass(x) & _FPCLASS_NINF)
2607 # define Perl_fp_class_pinf(x) (_fpclass(x) & _FPCLASS_PINF)
2608 # define Perl_fp_class_inf(x) (_fpclass(x) & (_FPCLASS_NINF|_FPCLASS_PINF))
2609 # define Perl_fp_class_nnorm(x) (_fpclass(x) & _FPCLASS_NN)
2610 # define Perl_fp_class_pnorm(x) (_fpclass(x) & _FPCLASS_PN)
2611 # define Perl_fp_class_norm(x) (_fpclass(x) & (_FPCLASS_NN|_FPCLASS_PN))
2612 # define Perl_fp_class_ndenorm(x) (_fpclass(x) & _FPCLASS_ND)
2613 # define Perl_fp_class_pdenorm(x) (_fpclass(x) & _FPCLASS_PD)
2614 # define Perl_fp_class_denorm(x) (_fpclass(x) & (_FPCLASS_ND|_FPCLASS_PD))
2615 # define Perl_fp_class_nzero(x) (_fpclass(x) & _FPCLASS_NZ)
2616 # define Perl_fp_class_pzero(x) (_fpclass(x) & _FPCLASS_PZ)
2617 # define Perl_fp_class_zero(x) (_fpclass(x) & (_FPCLASS_NZ|_FPCLASS_PZ))
2621 #if !defined(Perl_fp_class_inf) && \
2622 defined(Perl_fp_class_pinf) && defined(Perl_fp_class_ninf)
2623 # define Perl_fp_class_inf(x) \
2624 (Perl_fp_class_pinf(x) || Perl_fp_class_ninf(x))
2627 #if !defined(Perl_fp_class_nan) && \
2628 defined(Perl_fp_class_snan) && defined(Perl_fp_class_qnan)
2629 # define Perl_fp_class_nan(x) \
2630 (Perl_fp_class_snan(x) || Perl_fp_class_qnan(x))
2633 #if !defined(Perl_fp_class_zero) && \
2634 defined(Perl_fp_class_pzero) && defined(Perl_fp_class_nzero)
2635 # define Perl_fp_class_zero(x) \
2636 (Perl_fp_class_pzero(x) || Perl_fp_class_nzero(x))
2639 #if !defined(Perl_fp_class_norm) && \
2640 defined(Perl_fp_class_pnorm) && defined(Perl_fp_class_nnorm)
2641 # define Perl_fp_class_norm(x) \
2642 (Perl_fp_class_pnorm(x) || Perl_fp_class_nnorm(x))
2645 #if !defined(Perl_fp_class_denorm) && \
2646 defined(Perl_fp_class_pdenorm) && defined(Perl_fp_class_ndenorm)
2647 # define Perl_fp_class_denorm(x) \
2648 (Perl_fp_class_pdenorm(x) || Perl_fp_class_ndenorm(x))
2652 # ifdef Perl_fp_class_nan
2653 # define Perl_isnan(x) Perl_fp_class_nan(x)
2654 # elif defined(HAS_UNORDERED)
2655 # define Perl_isnan(x) unordered((x), 0.0)
2657 # define Perl_isnan(x) ((x)!=(x))
2662 # ifdef Perl_fp_class_inf
2663 # define Perl_isinf(x) Perl_fp_class_inf(x)
2667 #ifndef Perl_isfinite
2668 # if defined(HAS_ISFINITE) && !defined(isfinite)
2669 # define Perl_isfinite(x) isfinite((double)(x))
2670 # elif defined(HAS_FINITE)
2671 # define Perl_isfinite(x) finite((double)(x))
2672 # elif defined(Perl_fp_class_finite)
2673 # define Perl_isfinite(x) Perl_fp_class_finite(x)
2675 /* For the infinities the multiplication returns nan,
2676 * for the nan the multiplication also returns nan,
2677 * for everything else (that is, finite) zero should be returned. */
2678 # define Perl_isfinite(x) (((x) * 0) == 0)
2683 # if defined(Perl_isfinite) && defined(Perl_isnan)
2684 # define Perl_isinf(x) !(Perl_isfinite(x)||Perl_isnan(x))
2688 /* We need Perl_isfinitel (ends with ell) (if available) even when
2689 * not USE_LONG_DOUBLE because the printf code (sv_catpvfn_flags)
2691 #if defined(HAS_LONG_DOUBLE) && !defined(Perl_isfinitel)
2692 /* If isfinite() is a macro and looks like we have C99,
2693 * we assume it's the type-aware C99 isfinite(). */
2694 # if defined(HAS_ISFINITE) && defined(isfinite) && defined(HAS_C99)
2695 # define Perl_isfinitel(x) isfinite(x)
2696 # elif defined(HAS_ISFINITEL)
2697 # define Perl_isfinitel(x) isfinitel(x)
2698 # elif defined(HAS_FINITEL)
2699 # define Perl_isfinitel(x) finitel(x)
2700 # elif defined(HAS_ISINFL) && defined(HAS_ISNANL)
2701 # define Perl_isfinitel(x) !(isinfl(x)||isnanl(x))
2703 # define Perl_isfinitel(x) ((x) * 0 == 0) /* See Perl_isfinite. */
2707 /* The default is to use Perl's own atof() implementation (in numeric.c).
2708 * Usually that is the one to use but for some platforms (e.g. UNICOS)
2709 * it is however best to use the native implementation of atof.
2710 * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
2711 * Some good tests to try out with either setting are t/base/num.t,
2712 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles
2713 * you may need to be using a different function than atof! */
2715 #ifndef USE_PERL_ATOF
2717 # define USE_PERL_ATOF
2720 # if USE_PERL_ATOF == 0
2721 # undef USE_PERL_ATOF
2725 #ifdef USE_PERL_ATOF
2726 # define Perl_atof(s) Perl_my_atof(s)
2727 # define Perl_atof2(s, n) Perl_my_atof3(aTHX_ (s), &(n), 0)
2729 # define Perl_atof(s) (NV)atof(s)
2730 # define Perl_atof2(s, n) ((n) = atof(s))
2732 #define my_atof2(a,b) my_atof3(a,b,0)
2735 =for apidoc_section $numeric
2736 =for apidoc AmT|NV|Perl_acos|NV x
2737 =for apidoc_item |NV|Perl_asin|NV x
2738 =for apidoc_item |NV|Perl_atan|NV x
2739 =for apidoc_item |NV|Perl_atan2|NV x|NV y
2740 =for apidoc_item |NV|Perl_ceil|NV x
2741 =for apidoc_item |NV|Perl_cos|NV x
2742 =for apidoc_item |NV|Perl_cosh|NV x
2743 =for apidoc_item |NV|Perl_exp|NV x
2744 =for apidoc_item |NV|Perl_floor|NV x
2745 =for apidoc_item |NV|Perl_fmod|NV x|NV y
2746 =for apidoc_item |NV|Perl_frexp|NV x|int *exp
2747 =for apidoc_item |IV|Perl_isfinite|NV x
2748 =for apidoc_item |IV|Perl_isinf|NV x
2749 =for apidoc_item |IV|Perl_isnan|NV x
2750 =for apidoc_item |NV|Perl_ldexp|NV x|int exp
2751 =for apidoc_item |NV|Perl_log|NV x
2752 =for apidoc_item |NV|Perl_log10|NV x
2753 =for apidoc_item |NV|Perl_modf|NV x|NV *iptr
2754 =for apidoc_item |NV|Perl_pow|NV x|NV y
2755 =for apidoc_item |NV|Perl_sin|NV x
2756 =for apidoc_item |NV|Perl_sinh|NV x
2757 =for apidoc_item |NV|Perl_sqrt|NV x
2758 =for apidoc_item |NV|Perl_tan|NV x
2759 =for apidoc_item |NV|Perl_tanh|NV x
2761 These perform the corresponding mathematical operation on the operand(s), using
2762 the libc function designed for the task that has just enough precision for an
2763 NV on this platform. If no such function with sufficient precision exists,
2764 the highest precision one available is used.
2770 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
2771 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
2772 * depending on local options. Until Configure detects this (or at least
2773 * detects whether the "signed" keyword is available) the CHAR ranges
2774 * will not be included. UCHAR functions normally.
2778 #define PERL_UCHAR_MIN ((unsigned char)0)
2779 #define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
2781 #define PERL_USHORT_MIN ((unsigned short)0)
2782 #define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
2784 #define PERL_SHORT_MAX ((short)SHRT_MAX)
2785 #define PERL_SHORT_MIN ((short)SHRT_MIN)
2787 #define PERL_UINT_MAX ((unsigned int)UINT_MAX)
2788 #define PERL_UINT_MIN ((unsigned int)0)
2790 #define PERL_INT_MAX ((int)INT_MAX)
2791 #define PERL_INT_MIN ((int)INT_MIN)
2793 #define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
2794 #define PERL_ULONG_MIN ((unsigned long)0L)
2796 #define PERL_LONG_MAX ((long)LONG_MAX)
2797 #define PERL_LONG_MIN ((long)LONG_MIN)
2800 # define PERL_UQUAD_MAX (~(UV)0)
2801 # define PERL_UQUAD_MIN ((UV)0)
2802 # define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
2803 # define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
2807 =for apidoc_section $integer
2809 =for apidoc AmnU||PERL_INT_MAX
2810 =for apidoc_item ||PERL_INT_MIN
2811 =for apidoc_item ||PERL_LONG_MAX
2812 =for apidoc_item ||PERL_LONG_MIN
2813 =for apidoc_item ||PERL_SHORT_MAX
2814 =for apidoc_item ||PERL_SHORT_MIN
2815 =for apidoc_item ||PERL_UCHAR_MAX
2816 =for apidoc_item ||PERL_UCHAR_MIN
2817 =for apidoc_item ||PERL_UINT_MAX
2818 =for apidoc_item ||PERL_UINT_MIN
2819 =for apidoc_item ||PERL_ULONG_MAX
2820 =for apidoc_item ||PERL_ULONG_MIN
2821 =for apidoc_item ||PERL_USHORT_MAX
2822 =for apidoc_item ||PERL_USHORT_MIN
2823 =for apidoc_item ||PERL_QUAD_MAX
2824 =for apidoc_item ||PERL_QUAD_MIN
2825 =for apidoc_item ||PERL_UQUAD_MAX
2826 =for apidoc_item ||PERL_UQUAD_MIN
2828 These give the largest and smallest number representable in the current
2829 platform in variables of the corresponding types.
2831 For signed types, the smallest representable number is the most negative
2832 number, the one furthest away from zero.
2834 For C99 and later compilers, these correspond to things like C<INT_MAX>, which
2835 are available to the C code. But these constants, furnished by Perl,
2836 allow code compiled on earlier compilers to portably have access to the same
2843 typedef MEM_SIZE STRLEN;
2845 typedef struct op OP;
2846 typedef struct cop COP;
2847 typedef struct unop UNOP;
2848 typedef struct unop_aux UNOP_AUX;
2849 typedef struct binop BINOP;
2850 typedef struct listop LISTOP;
2851 typedef struct logop LOGOP;
2852 typedef struct pmop PMOP;
2853 typedef struct svop SVOP;
2854 typedef struct padop PADOP;
2855 typedef struct pvop PVOP;
2856 typedef struct loop LOOP;
2857 typedef struct methop METHOP;
2860 typedef struct opslab OPSLAB;
2861 typedef struct opslot OPSLOT;
2864 typedef struct block_hooks BHK;
2865 typedef struct custom_op XOP;
2867 typedef struct interpreter PerlInterpreter;
2869 /* SGI's <sys/sema.h> has struct sv */
2871 # define STRUCT_SV perl_sv
2873 # define STRUCT_SV sv
2875 typedef struct STRUCT_SV SV;
2876 typedef struct av AV;
2877 typedef struct hv HV;
2878 typedef struct cv CV;
2879 typedef struct p5rx REGEXP;
2880 typedef struct gp GP;
2881 typedef struct gv GV;
2882 typedef struct io IO;
2883 typedef struct context PERL_CONTEXT;
2884 typedef struct block BLOCK;
2885 typedef struct invlist INVLIST;
2887 typedef struct magic MAGIC;
2888 typedef struct xpv XPV;
2889 typedef struct xpviv XPVIV;
2890 typedef struct xpvuv XPVUV;
2891 typedef struct xpvnv XPVNV;
2892 typedef struct xpvmg XPVMG;
2893 typedef struct xpvlv XPVLV;
2894 typedef struct xpvinvlist XINVLIST;
2895 typedef struct xpvav XPVAV;
2896 typedef struct xpvhv XPVHV;
2897 typedef struct xpvgv XPVGV;
2898 typedef struct xpvcv XPVCV;
2899 typedef struct xpvbm XPVBM;
2900 typedef struct xpvfm XPVFM;
2901 typedef struct xpvio XPVIO;
2902 typedef struct mgvtbl MGVTBL;
2903 typedef union any ANY;
2904 typedef struct ptr_tbl_ent PTR_TBL_ENT_t;
2905 typedef struct ptr_tbl PTR_TBL_t;
2906 typedef struct clone_params CLONE_PARAMS;
2908 /* a pad is currently just an AV; but that might change,
2909 * so hide the type. */
2910 typedef struct padlist PADLIST;
2912 typedef struct padnamelist PADNAMELIST;
2913 typedef struct padname PADNAME;
2915 /* always enable PERL_OP_PARENT */
2916 #if !defined(PERL_OP_PARENT)
2917 # define PERL_OP_PARENT
2920 /* enable PERL_COPY_ON_WRITE by default */
2921 #if !defined(PERL_COPY_ON_WRITE) && !defined(PERL_NO_COW)
2922 # define PERL_COPY_ON_WRITE
2925 #ifdef PERL_COPY_ON_WRITE
2926 # define PERL_ANY_COW
2928 # define PERL_SAWAMPERSAND
2931 #if defined(PERL_DEBUG_READONLY_OPS) && !defined(USE_ITHREADS)
2932 # error PERL_DEBUG_READONLY_OPS only works with ithreads
2936 #include "charclass_invlists.h"
2938 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO)
2939 # if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO)
2940 # define USE_64_BIT_RAWIO /* implicit */
2944 /* Notice the use of HAS_FSEEKO: now we are obligated to always use
2945 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself,
2946 * however, because operating systems like to do that themself. */
2949 # define FSEEKSIZE LSEEKSIZE
2951 # define FSEEKSIZE LONGSIZE
2955 #if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO)
2956 # if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO)
2957 # define USE_64_BIT_STDIO /* implicit */
2961 #ifdef USE_64_BIT_RAWIO
2964 # define Off_t off64_t
2966 # define LSEEKSIZE 8
2968 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2969 * will trigger defines like the ones below. Some 64-bit environments,
2970 * however, do not. Therefore we have to explicitly mix and match. */
2971 # if defined(USE_OPEN64)
2972 # define open open64
2974 # if defined(USE_LSEEK64)
2975 # define lseek lseek64
2977 # if defined(USE_LLSEEK)
2978 # define lseek llseek
2981 # if defined(USE_STAT64)
2982 # define stat stat64
2984 # if defined(USE_FSTAT64)
2985 # define fstat fstat64
2987 # if defined(USE_LSTAT64)
2988 # define lstat lstat64
2990 # if defined(USE_FLOCK64)
2991 # define flock flock64
2993 # if defined(USE_LOCKF64)
2994 # define lockf lockf64
2996 # if defined(USE_FCNTL64)
2997 # define fcntl fcntl64
2999 # if defined(USE_TRUNCATE64)
3000 # define truncate truncate64
3002 # if defined(USE_FTRUNCATE64)
3003 # define ftruncate ftruncate64
3007 #ifdef USE_64_BIT_STDIO
3008 # ifdef HAS_FPOS64_T
3010 # define Fpos_t fpos64_t
3012 /* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
3013 * will trigger defines like the ones below. Some 64-bit environments,
3014 * however, do not. */
3015 # if defined(USE_FOPEN64)
3016 # define fopen fopen64
3018 # if defined(USE_FSEEK64)
3019 # define fseek fseek64 /* don't do fseeko here, see perlio.c */
3021 # if defined(USE_FTELL64)
3022 # define ftell ftell64 /* don't do ftello here, see perlio.c */
3024 # if defined(USE_FSETPOS64)
3025 # define fsetpos fsetpos64
3027 # if defined(USE_FGETPOS64)
3028 # define fgetpos fgetpos64
3030 # if defined(USE_TMPFILE64)
3031 # define tmpfile tmpfile64
3033 # if defined(USE_FREOPEN64)
3034 # define freopen freopen64
3039 # include "iperlsys.h"
3044 # include "os2ish.h"
3046 # include "dosish.h"
3049 # include "vmsish.h"
3050 #elif defined(PLAN9)
3051 # include "./plan9/plan9ish.h"
3052 #elif defined(__VOS__)
3054 # include "./vos/vosish.h"
3056 # include "vos/vosish.h"
3058 #elif defined(__HAIKU__)
3059 # include "haiku/haikuish.h"
3061 # include "unixish.h"
3065 # include "amigaos.h"
3066 # undef FD_CLOEXEC /* a lie in AmigaOS */
3069 /* NSIG logic from Configure --> */
3072 # define NSIG (_NSIG)
3073 # elif defined(SIGMAX)
3074 # define NSIG (SIGMAX+1)
3075 # elif defined(SIG_MAX)
3076 # define NSIG (SIG_MAX+1)
3077 # elif defined(_SIG_MAX)
3078 # define NSIG (_SIG_MAX+1)
3079 # elif defined(MAXSIG)
3080 # define NSIG (MAXSIG+1)
3081 # elif defined(MAX_SIG)
3082 # define NSIG (MAX_SIG+1)
3083 # elif defined(SIGARRAYSIZE)
3084 # define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
3085 # elif defined(_sys_nsig)
3086 # define NSIG (_sys_nsig) /* Solaris 2.5 */
3088 /* Default to some arbitrary number that's big enough to get most
3089 * of the common signals. */
3093 /* <-- NSIG logic from Configure */
3095 #ifndef NO_ENVIRON_ARRAY
3096 # define USE_ENVIRON_ARRAY
3099 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
3100 /* having sigaction(2) means that the OS supports both 1-arg and 3-arg
3101 * signal handlers. But the perl core itself only fully supports 1-arg
3102 * handlers, so don't enable for now.
3103 * NB: POSIX::sigaction() supports both.
3105 * # define PERL_USE_3ARG_SIGHANDLER
3110 * This is an alias for the OS's siginfo_t, except that where the OS
3111 * doesn't support it, declare a dummy version instead. This allows us to
3112 * have signal handler functions which always have a Siginfo_t parameter
3113 * regardless of platform, (and which will just be passed a NULL value
3114 * where the OS doesn't support HAS_SIGACTION).
3117 #if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
3118 typedef siginfo_t Siginfo_t;
3120 #ifdef si_signo /* minix */
3130 * initialise to avoid floating-point exceptions from overflow, etc
3132 #ifndef PERL_FPU_INIT
3133 # ifdef HAS_FPSETMASK
3134 # if HAS_FLOATINGPOINT_H
3135 # include <floatingpoint.h>
3137 /* Some operating systems have this as a macro, which in turn expands to a comma
3138 expression, and the last sub-expression is something that gets calculated,
3139 and then they have the gall to warn that a value computed is not used. Hence
3141 # define PERL_FPU_INIT (void)fpsetmask(0)
3142 # elif defined(SIGFPE) && defined(SIG_IGN) && !defined(PERL_MICRO)
3143 # define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN)
3144 # define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
3145 # define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
3147 # define PERL_FPU_INIT
3150 #ifndef PERL_FPU_PRE_EXEC
3151 # define PERL_FPU_PRE_EXEC {
3152 # define PERL_FPU_POST_EXEC }
3155 /* In Tru64 the cc -ieee enables the IEEE math but disables traps.
3156 * We need to reenable the "invalid" trap because otherwise generation
3157 * of NaN values leaves the IEEE fp flags in bad state, leaving any further
3158 * fp ops behaving strangely (Inf + 1 resulting in zero, for example). */
3160 # include <machine/fpu.h>
3161 # define PERL_SYS_FPU_INIT \
3163 ieee_set_fp_control(IEEE_TRAP_ENABLE_INV); \
3164 signal(SIGFPE, SIG_IGN); \
3167 /* In IRIX the default for Flush to Zero bit is true,
3168 * which means that results going below the minimum of normal
3169 * floating points go to zero, instead of going denormal/subnormal.
3170 * This is unlike almost any other system running Perl, so let's clear it.
3171 * [perl #123767] IRIX64 blead (ddce084a) opbasic/arith.t failure, originally
3172 * [perl #120426] small numbers shouldn't round to zero if they have extra floating digits
3174 * XXX The flush-to-zero behaviour should be a Configure scan.
3175 * To change the behaviour usually requires some system-specific
3176 * incantation, though, like the below. */
3178 # include <sys/fpu.h>
3179 # define PERL_SYS_FPU_INIT \
3181 union fpc_csr csr; \
3182 csr.fc_word = get_fpc_csr(); \
3183 csr.fc_struct.flush = 0; \
3184 set_fpc_csr(csr.fc_word); \
3188 #ifndef PERL_SYS_FPU_INIT
3189 # define PERL_SYS_FPU_INIT NOOP
3192 #ifndef PERL_SYS_INIT3_BODY
3193 # define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp)
3197 =for apidoc_section $embedding
3199 =for apidoc Am|void|PERL_SYS_INIT|int *argc|char*** argv
3200 Provides system-specific tune up of the C runtime environment necessary to
3201 run Perl interpreters. This should be called only once, before creating
3202 any Perl interpreters.
3204 =for apidoc Am|void|PERL_SYS_INIT3|int *argc|char*** argv|char*** env
3205 Provides system-specific tune up of the C runtime environment necessary to
3206 run Perl interpreters. This should be called only once, before creating
3207 any Perl interpreters.
3209 =for apidoc Am|void|PERL_SYS_TERM|
3210 Provides system-specific clean up of the C runtime environment after
3211 running Perl interpreters. This should be called only once, after
3212 freeing any remaining Perl interpreters.
3217 #define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv)
3218 #define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env)
3219 #define PERL_SYS_TERM() Perl_sys_term()
3221 #ifndef PERL_WRITE_MSG_TO_CONSOLE
3222 # define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len)
3227 # ifdef _POSIX_PATH_MAX
3228 # if PATH_MAX > _POSIX_PATH_MAX
3229 /* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX
3230 * included the null byte or not. Later amendments of POSIX,
3231 * XPG4, the Austin Group, and the Single UNIX Specification
3232 * all explicitly include the null byte in the PATH_MAX.
3233 * Ditto for _POSIX_PATH_MAX. */
3234 # define MAXPATHLEN PATH_MAX
3236 # define MAXPATHLEN _POSIX_PATH_MAX
3239 # define MAXPATHLEN (PATH_MAX+1)
3242 # define MAXPATHLEN 1024 /* Err on the large side. */
3246 /* clang Thread Safety Analysis/Annotations/Attributes
3247 * http://clang.llvm.org/docs/ThreadSafetyAnalysis.html
3249 * Available since clang 3.6-ish (appeared in 3.4, but shaky still in 3.5).
3250 * Apple XCode hijacks __clang_major__ and __clang_minor__
3251 * (6.1 means really clang 3.6), so needs extra hijinks
3252 * (could probably also test the contents of __apple_build_version__).
3254 #if defined(USE_ITHREADS) && defined(I_PTHREAD) && \
3255 defined(__clang__) && \
3257 ((!defined(__apple_build_version__) && \
3258 ((__clang_major__ == 3 && __clang_minor__ >= 6) || \
3259 (__clang_major__ >= 4))) || \
3260 (defined(__apple_build_version__) && \
3261 ((__clang_major__ == 6 && __clang_minor__ >= 1) || \
3262 (__clang_major__ >= 7))))
3263 # define PERL_TSA__(x) __attribute__((x))
3264 # define PERL_TSA_ACTIVE
3266 # define PERL_TSA__(x) /* No TSA, make TSA attributes no-ops. */
3267 # undef PERL_TSA_ACTIVE
3270 /* PERL_TSA_CAPABILITY() is used to annotate typedefs.
3271 * typedef old_type PERL_TSA_CAPABILITY("mutex") new_type;
3273 #define PERL_TSA_CAPABILITY(x) \
3274 PERL_TSA__(capability(x))
3276 /* In the below examples the mutex must be lexically visible, usually
3277 * either as global variables, or as function arguments. */
3279 /* PERL_TSA_GUARDED_BY() is used to annotate global variables.
3281 * Foo foo PERL_TSA_GUARDED_BY(mutex);
3283 #define PERL_TSA_GUARDED_BY(x) \
3284 PERL_TSA__(guarded_by(x))
3286 /* PERL_TSA_PT_GUARDED_BY() is used to annotate global pointers.
3287 * The data _behind_ the pointer is guarded.
3289 * Foo* ptr PERL_TSA_PT_GUARDED_BY(mutex);
3291 #define PERL_TSA_PT_GUARDED_BY(x) \
3292 PERL_TSA__(pt_guarded_by(x))
3294 /* PERL_TSA_REQUIRES() is used to annotate functions.
3295 * The caller MUST hold the resource when calling the function.
3297 * void Foo() PERL_TSA_REQUIRES(mutex);
3299 #define PERL_TSA_REQUIRES(x) \
3300 PERL_TSA__(requires_capability(x))
3302 /* PERL_TSA_EXCLUDES() is used to annotate functions.
3303 * The caller MUST NOT hold resource when calling the function.
3305 * EXCLUDES should be used when the function first acquires
3306 * the resource and then releases it. Use to avoid deadlock.
3308 * void Foo() PERL_TSA_EXCLUDES(mutex);
3310 #define PERL_TSA_EXCLUDES(x) \
3311 PERL_TSA__(locks_excluded(x))
3313 /* PERL_TSA_ACQUIRE() is used to annotate functions.
3314 * The caller MUST NOT hold the resource when calling the function,
3315 * and the function will acquire the resource.
3317 * void Foo() PERL_TSA_ACQUIRE(mutex);
3319 #define PERL_TSA_ACQUIRE(x) \
3320 PERL_TSA__(acquire_capability(x))
3322 /* PERL_TSA_RELEASE() is used to annotate functions.
3323 * The caller MUST hold the resource when calling the function,
3324 * and the function will release the resource.
3326 * void Foo() PERL_TSA_RELEASE(mutex);
3328 #define PERL_TSA_RELEASE(x) \
3329 PERL_TSA__(release_capability(x))
3331 /* PERL_TSA_NO_TSA is used to annotate functions.
3332 * Used when being intentionally unsafe, or when the code is too
3333 * complicated for the analysis. Use sparingly.
3335 * void Foo() PERL_TSA_NO_TSA;
3337 #define PERL_TSA_NO_TSA \
3338 PERL_TSA__(no_thread_safety_analysis)
3340 /* There are more annotations/attributes available, see the clang
3341 * documentation for details. */
3343 #if defined(USE_ITHREADS)
3345 # include <win32thread.h>
3347 # include "os2thread.h"
3348 # elif defined(I_MACH_CTHREADS)
3349 # include <mach/cthreads.h>
3350 typedef cthread_t perl_os_thread;
3351 typedef mutex_t perl_mutex;
3352 typedef condition_t perl_cond;
3353 typedef void * perl_key;
3354 # elif defined(I_PTHREAD) /* Posix threads */
3355 # include <pthread.h>
3356 typedef pthread_t perl_os_thread;
3357 typedef pthread_mutex_t PERL_TSA_CAPABILITY("mutex") perl_mutex;
3358 typedef pthread_cond_t perl_cond;
3359 typedef pthread_key_t perl_key;
3362 /* Many readers; single writer */
3366 SSize_t readers_count;
3367 } perl_RnW1_mutex_t;
3370 #endif /* USE_ITHREADS */
3372 #ifdef PERL_TSA_ACTIVE
3373 /* Since most pthread mutex interfaces have not been annotated, we
3374 * need to have these wrappers. The NO_TSA annotation is quite ugly
3375 * but it cannot be avoided in plain C, unlike in C++, where one could
3376 * e.g. use ACQUIRE() with no arg on a mutex lock method.
3378 * The bodies of these wrappers are in util.c
3380 * TODO: however, some platforms are starting to get these clang
3381 * thread safety annotations for pthreads, for example FreeBSD.
3382 * Do we need a way to a bypass these wrappers? */
3383 EXTERN_C int perl_tsa_mutex_lock(perl_mutex* mutex)
3384 PERL_TSA_ACQUIRE(*mutex)
3386 EXTERN_C int perl_tsa_mutex_unlock(perl_mutex* mutex)
3387 PERL_TSA_RELEASE(*mutex)
3395 #define STATUS_UNIX PL_statusvalue
3397 # define STATUS_NATIVE PL_statusvalue_vms
3399 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise
3400 * its contents can not be trusted. Unfortunately, Perl seems to check
3401 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should
3404 # include <stsdef.h>
3406 /* Presume this because if VMS changes it, it will require a new
3407 * set of APIs for waiting on children for binary compatibility.
3409 # define child_offset_bits (8)
3410 # ifndef C_FAC_POSIX
3411 # define C_FAC_POSIX 0x35A000
3414 /* STATUS_EXIT - validates and returns a NATIVE exit status code for the
3415 * platform from the existing UNIX or Native status values.
3418 # define STATUS_EXIT \
3419 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \
3420 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0))
3423 /* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child
3424 * exit code and shifts the UNIX value over the correct number of bits to
3425 * be a child status. Usually the number of bits is 8, but that could be
3426 * platform dependent. The NATIVE status code is presumed to have either
3427 * from a child process.
3430 /* This is complicated. The child processes return a true native VMS
3431 status which must be saved. But there is an assumption in Perl that
3432 the UNIX child status has some relationship to errno values, so
3433 Perl tries to translate it to text in some of the tests.
3434 In order to get the string translation correct, for the error, errno
3435 must be EVMSERR, but that generates a different text message
3436 than what the test programs are expecting. So an errno value must
3437 be derived from the native status value when an error occurs.
3438 That will hide the true native status message. With this version of
3439 perl, the true native child status can always be retrieved so that
3440 is not a problem. But in this case, Pl_statusvalue and errno may
3441 have different values in them.
3444 # define STATUS_NATIVE_CHILD_SET(n) \
3446 I32 evalue = (I32)n; \
3447 if (evalue == EVMSERR) { \
3448 PL_statusvalue_vms = vaxc$errno; \
3449 PL_statusvalue = evalue; \
3451 PL_statusvalue_vms = evalue; \
3452 if (evalue == -1) { \
3453 PL_statusvalue = -1; \
3454 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \
3456 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \
3457 set_vaxc_errno(evalue); \
3458 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \
3459 set_errno(EVMSERR); \
3460 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \
3461 PL_statusvalue = PL_statusvalue << child_offset_bits; \
3465 # ifdef VMSISH_STATUS
3466 # define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX)
3468 # define STATUS_CURRENT STATUS_UNIX
3471 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update
3472 * the NATIVE status to an equivalent value. Can not be used to translate
3473 * exit code values as exit code values are not guaranteed to have any
3474 * relationship at all to errno values.
3475 * This is used when Perl is forcing errno to have a specific value.
3477 # define STATUS_UNIX_SET(n) \
3479 I32 evalue = (I32)n; \
3480 PL_statusvalue = evalue; \
3481 if (PL_statusvalue != -1) { \
3482 if (PL_statusvalue != EVMSERR) { \
3483 PL_statusvalue &= 0xFFFF; \
3484 if (MY_POSIX_EXIT) \
3485 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\
3486 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \
3489 PL_statusvalue_vms = vaxc$errno; \
3492 else PL_statusvalue_vms = SS$_ABORT; \
3493 set_vaxc_errno(PL_statusvalue_vms); \
3496 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets
3497 * the NATIVE error status based on it.
3499 * When in the default mode to comply with the Perl VMS documentation,
3500 * 0 is a success and any other code sets the NATIVE status to a failure
3501 * code of SS$_ABORT.
3503 * In the new POSIX EXIT mode, native status will be set so that the
3504 * actual exit code will can be retrieved by the calling program or
3507 * If the exit code is not clearly a UNIX parent or child exit status,
3508 * it will be passed through as a VMS status.
3511 # define STATUS_UNIX_EXIT_SET(n) \
3513 I32 evalue = (I32)n; \
3514 PL_statusvalue = evalue; \
3515 if (MY_POSIX_EXIT) { \
3516 if (evalue <= 0xFF00) { \
3517 if (evalue > 0xFF) \
3518 evalue = ((U8) (evalue >> child_offset_bits)); \
3519 PL_statusvalue_vms = \
3520 (C_FAC_POSIX | (evalue << 3 ) | \
3521 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \
3522 } else /* forgive them Perl, for they have sinned */ \
3523 PL_statusvalue_vms = evalue; \
3526 PL_statusvalue_vms = SS$_NORMAL; \
3527 else if (evalue <= 0xFF00) \
3528 PL_statusvalue_vms = SS$_ABORT; \
3529 else { /* forgive them Perl, for they have sinned */ \
3530 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \
3531 else PL_statusvalue_vms = vaxc$errno; \
3532 /* And obviously used a VMS status value instead of UNIX */ \
3533 PL_statusvalue = EVMSERR; \
3535 set_vaxc_errno(PL_statusvalue_vms); \
3540 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code
3541 * and sets the NATIVE error status based on it. This special case
3542 * is needed to maintain compatibility with past VMS behavior.
3544 * In the default mode on VMS, this number is passed through as
3545 * both the NATIVE and UNIX status. Which makes it different
3546 * that the STATUS_UNIX_EXIT_SET.
3548 * In the new POSIX EXIT mode, native status will be set so that the
3549 * actual exit code will can be retrieved by the calling program or
3552 * A POSIX exit code is from 0 to 255. If the exit code is higher
3553 * than this, it needs to be assumed that it is a VMS exit code and
3557 # define STATUS_EXIT_SET(n) \
3559 I32 evalue = (I32)n; \
3560 PL_statusvalue = evalue; \
3561 if (MY_POSIX_EXIT) \
3562 if (evalue > 255) PL_statusvalue_vms = evalue; else { \
3563 PL_statusvalue_vms = \
3564 (C_FAC_POSIX | (evalue << 3 ) | \
3565 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \
3567 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \
3568 set_vaxc_errno(PL_statusvalue_vms); \
3572 /* This macro forces a success status */
3573 # define STATUS_ALL_SUCCESS \
3574 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL)
3576 /* This macro forces a failure status */
3577 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, \
3578 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \
3579 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT)
3581 #elif defined(__amigaos4__)
3582 /* A somewhat experimental attempt to simulate posix return code values */
3583 # define STATUS_NATIVE PL_statusvalue_posix
3584 # define STATUS_NATIVE_CHILD_SET(n) \
3586 PL_statusvalue_posix = (n); \
3587 if (PL_statusvalue_posix < 0) { \
3588 PL_statusvalue = -1; \
3591 PL_statusvalue = n << 8; \
3594 # define STATUS_UNIX_SET(n) \
3596 PL_statusvalue = (n); \
3597 if (PL_statusvalue != -1) \
3598 PL_statusvalue &= 0xFFFF; \
3600 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3601 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3602 # define STATUS_CURRENT STATUS_UNIX
3603 # define STATUS_EXIT STATUS_UNIX
3604 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3605 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3608 # define STATUS_NATIVE PL_statusvalue_posix
3609 # if defined(WCOREDUMP)
3610 # define STATUS_NATIVE_CHILD_SET(n) \
3612 PL_statusvalue_posix = (n); \
3613 if (PL_statusvalue_posix == -1) \
3614 PL_statusvalue = -1; \
3617 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3618 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \
3619 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \
3622 # elif defined(WIFEXITED)
3623 # define STATUS_NATIVE_CHILD_SET(n) \
3625 PL_statusvalue_posix = (n); \
3626 if (PL_statusvalue_posix == -1) \
3627 PL_statusvalue = -1; \
3630 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3631 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \
3635 # define STATUS_NATIVE_CHILD_SET(n) \
3637 PL_statusvalue_posix = (n); \
3638 if (PL_statusvalue_posix == -1) \
3639 PL_statusvalue = -1; \
3642 PL_statusvalue_posix & 0xFFFF; \
3646 # define STATUS_UNIX_SET(n) \
3648 PL_statusvalue = (n); \
3649 if (PL_statusvalue != -1) \
3650 PL_statusvalue &= 0xFFFF; \
3652 # define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3653 # define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3654 # define STATUS_CURRENT STATUS_UNIX
3655 # define STATUS_EXIT STATUS_UNIX
3656 # define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3657 # define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3660 /* flags in PL_exit_flags for nature of exit() */
3661 #define PERL_EXIT_EXPECTED 0x01
3662 #define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */
3663 #define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */
3664 #define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */
3667 /* format to use for version numbers in file/directory names */
3668 /* XXX move to Configure? */
3669 /* This was only ever used for the current version, and that can be done at
3670 compile time, as PERL_FS_VERSION, so should we just delete it? */
3671 # ifndef PERL_FS_VER_FMT
3672 # define PERL_FS_VER_FMT "%d.%d.%d"
3676 #ifndef PERL_FS_VERSION
3677 # define PERL_FS_VERSION PERL_VERSION_STRING
3680 /* This defines a way to flush all output buffers. This may be a
3681 * performance issue, so we allow people to disable it. Also, if
3682 * we are using stdio, there are broken implementations of fflush(NULL)
3683 * out there, Solaris being the most prominent.
3685 #ifndef PERL_FLUSHALL_FOR_CHILD
3686 # if defined(USE_PERLIO) || defined(FFLUSH_NULL)
3687 # define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL)
3688 # elif defined(FFLUSH_ALL)
3689 # define PERL_FLUSHALL_FOR_CHILD my_fflush_all()
3691 # define PERL_FLUSHALL_FOR_CHILD NOOP
3695 #ifndef PERL_WAIT_FOR_CHILDREN
3696 # define PERL_WAIT_FOR_CHILDREN NOOP
3699 /* the traditional thread-unsafe notion of "current interpreter". */
3700 #ifndef PERL_SET_INTERP
3701 # define PERL_SET_INTERP(i) (PL_curinterp = (PerlInterpreter*)(i))
3704 #ifndef PERL_GET_INTERP
3705 # define PERL_GET_INTERP (PL_curinterp)
3708 #if defined(MULTIPLICITY) && !defined(PERL_GET_THX)
3709 # define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT)
3710 # define PERL_SET_THX(t) PERL_SET_CONTEXT(t)
3714 This replaces the previous %_ "hack" by the "%p" hacks.
3715 All that is required is that the perl source does not
3716 use "%-p" or "%-<number>p" or "%<number>p" formats.
3717 These formats will still work in perl code.
3718 See comments in sv.c for further details.
3720 Robin Barker 2005-07-14
3722 No longer use %1p for VDf = %vd. RMB 2007-10-19
3726 # define SVf_(n) "-" STRINGIFY(n) "p"
3734 # define SVf32 SVf_(32)
3738 # define SVf256 SVf_(256)
3741 #define SVfARG(p) ((void*)(p))
3747 /* Not ideal, but we cannot easily include a number in an already-numeric
3748 * format sequence. */
3750 # define HEKf256 "3p"
3753 #define HEKfARG(p) ((void*)(p))
3755 /* Documented in perlguts
3757 * %4p is a custom format
3760 # define UTF8f "d%" UVuf "%4p"
3762 #define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p)
3765 #define PNfARG(pn) (int)1, (UV)PadnameLEN(pn), (void *)PadnamePV(pn)
3768 /* not used; but needed for backward compatibility with XS code? - RMB
3769 =for apidoc AmnD|const char *|UVf
3771 Obsolete form of C<UVuf>, which you should convert to instead use
3780 #if !defined(DEBUGGING) && !defined(NDEBUG)
3785 /* For functions that are marked as __attribute__noreturn__, it's not
3786 appropriate to call return. In either case, include the lint directive.
3788 #ifdef HASATTRIBUTE_NORETURN
3789 # define NORETURN_FUNCTION_END NOT_REACHED;
3791 # define NORETURN_FUNCTION_END NOT_REACHED; return 0
3794 #ifdef HAS_BUILTIN_EXPECT
3795 # define EXPECT(expr,val) __builtin_expect(expr,val)
3797 # define EXPECT(expr,val) (expr)
3801 =for apidoc_section $directives
3803 =for apidoc Am||LIKELY|bool expr
3805 Returns the input unchanged, but at the same time it gives a branch prediction
3806 hint to the compiler that this condition is likely to be true.
3808 =for apidoc Am||UNLIKELY|bool expr
3810 Returns the input unchanged, but at the same time it gives a branch prediction
3811 hint to the compiler that this condition is likely to be false.
3815 #define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
3816 #define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
3818 #ifdef HAS_BUILTIN_CHOOSE_EXPR
3822 /* STATIC_ASSERT_DECL/STATIC_ASSERT_STMT are like assert(), but for compile
3823 time invariants. That is, their argument must be a constant expression that
3824 can be verified by the compiler. This expression can contain anything that's
3825 known to the compiler, e.g. #define constants, enums, or sizeof (...). If
3826 the expression evaluates to 0, compilation fails.
3827 Because they generate no runtime code (i.e. their use is "free"), they're
3828 always active, even under non-DEBUGGING builds.
3829 STATIC_ASSERT_DECL expands to a declaration and is suitable for use at
3830 file scope (outside of any function).
3831 STATIC_ASSERT_STMT expands to a statement and is suitable for use inside a
3834 #if (! defined(__IBMC__) || __IBMC__ >= 1210) \
3835 && (( defined(static_assert) && ( defined(_ISOC11_SOURCE) \
3836 || (__STDC_VERSION__ - 0) >= 201101L)) \
3837 || (defined(__cplusplus) && __cplusplus >= 201103L))
3838 /* XXX static_assert is a macro defined in <assert.h> in C11 or a compiler
3839 builtin in C++11. But IBM XL C V11 does not support _Static_assert, no
3840 matter what <assert.h> says.
3842 # define STATIC_ASSERT_DECL(COND) static_assert(COND, #COND)
3844 /* We use a bit-field instead of an array because gcc accepts
3845 'typedef char x[n]' where n is not a compile-time constant.
3846 We want to enforce constantness.
3848 # define STATIC_ASSERT_2(COND, SUFFIX) \
3850 unsigned int _static_assertion_failed_##SUFFIX : (COND) ? 1 : -1; \
3851 } _static_assertion_failed_##SUFFIX PERL_UNUSED_DECL
3852 # define STATIC_ASSERT_1(COND, SUFFIX) STATIC_ASSERT_2(COND, SUFFIX)
3853 # define STATIC_ASSERT_DECL(COND) STATIC_ASSERT_1(COND, __LINE__)
3855 /* We need this wrapper even in C11 because 'case X: static_assert(...);' is an
3856 error (static_assert is a declaration, and only statements can have labels).
3858 #define STATIC_ASSERT_STMT(COND) STMT_START { STATIC_ASSERT_DECL(COND); } STMT_END
3860 #ifndef __has_builtin
3861 # define __has_builtin(x) 0 /* not a clang style compiler */
3865 =for apidoc Am||ASSUME|bool expr
3866 C<ASSUME> is like C<assert()>, but it has a benefit in a release build. It is a
3867 hint to a compiler about a statement of fact in a function call free
3868 expression, which allows the compiler to generate better machine code. In a
3869 debug build, C<ASSUME(x)> is a synonym for C<assert(x)>. C<ASSUME(0)> means the
3870 control path is unreachable. In a for loop, C<ASSUME> can be used to hint that
3871 a loop will run at least X times. C<ASSUME> is based off MSVC's C<__assume>
3872 intrinsic function, see its documents for more details.
3877 #if __has_builtin(__builtin_unreachable)
3878 # define HAS_BUILTIN_UNREACHABLE
3879 #elif PERL_GCC_VERSION_GE(4,5,0)
3880 # define HAS_BUILTIN_UNREACHABLE
3884 # define ASSUME(x) assert(x)
3885 #elif defined(_MSC_VER)
3886 # define ASSUME(x) __assume(x)
3887 #elif defined(__ARMCC_VERSION) /* untested */
3888 # define ASSUME(x) __promise(x)
3889 #elif defined(HAS_BUILTIN_UNREACHABLE)
3890 /* Compilers can take the hint from something being unreachable */
3891 # define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable())
3893 /* Not DEBUGGING, so assert() is a no-op, but a random compiler might
3894 * define assert() to its own special optimization token so pass it through
3895 * to C lib as a last resort */
3896 # define ASSUME(x) assert(x)
3899 #ifdef HAS_BUILTIN_UNREACHABLE
3900 # define NOT_REACHED \
3902 ASSUME(!"UNREACHABLE"); __builtin_unreachable(); \
3904 # undef HAS_BUILTIN_UNREACHABLE /* Don't leak out this internal symbol */
3905 #elif ! defined(__GNUC__) && (defined(__sun) || defined(__hpux))
3906 /* These just complain that NOT_REACHED isn't reached */
3907 # define NOT_REACHED
3909 # define NOT_REACHED ASSUME(!"UNREACHABLE")
3912 /* Some unistd.h's give a prototype for pause() even though
3913 HAS_PAUSE ends up undefined. This causes the #define
3914 below to be rejected by the compiler. Sigh.
3919 #define Pause() sleep((32767<<16)+32767)
3923 # ifdef IOCPARM_MASK
3924 /* on BSDish systems we're safe */
3925 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
3926 # elif defined(_IOC_SIZE) && defined(__GLIBC__)
3927 /* on Linux systems we're safe; except when we're not [perl #38223] */
3928 # define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x))
3930 /* otherwise guess at what's safe */
3931 # define IOCPARM_LEN(x) 256
3935 #if defined(__CYGWIN__)
3937 * This symbol, if defined, indicates that the program should
3938 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
3939 * that a file is in "binary" mode -- that is, that no translation
3940 * of bytes occurs on read or write operations.
3942 # define USEMYBINMODE /**/
3943 # include <io.h> /* for setmode() prototype */
3944 # define my_binmode(fp, iotype, mode) \
3945 cBOOL(PerlLIO_setmode(fileno(fp), mode) != -1)
3949 void init_os_extras(void);
3952 #ifdef UNION_ANY_DEFINITION
3953 UNION_ANY_DEFINITION;
3971 void (*any_dptr) (void*);
3972 void (*any_dxptr) (pTHX_ void*);
3976 typedef I32 (*filter_t) (pTHX_ int, SV *, int);
3978 #define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
3979 #define FILTER_DATA(idx) \
3980 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL)
3981 #define FILTER_ISREADER(idx) \
3982 (PL_parser && PL_parser->rsfp_filters \
3983 && idx >= AvFILLp(PL_parser->rsfp_filters))
3984 #define PERL_FILTER_EXISTS(i) \
3985 (PL_parser && PL_parser->rsfp_filters \
3986 && (Size_t) (i) < av_count(PL_parser->rsfp_filters))
3988 #if defined(_AIX) && !defined(_AIX43)
3989 #if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE)
3990 /* We cannot include <crypt.h> to get the struct crypt_data
3991 * because of setkey prototype problems when threading */
3992 typedef struct crypt_data { /* straight from /usr/include/crypt.h */
3993 /* From OSF, Not needed in AIX
4001 #endif /* threading */
4004 #ifndef PERL_CALLCONV
4006 # define PERL_CALLCONV EXTERN_C
4008 # define PERL_CALLCONV
4011 #ifndef PERL_CALLCONV_NO_RET
4012 # define PERL_CALLCONV_NO_RET PERL_CALLCONV
4015 /* PERL_STATIC_NO_RET is supposed to be equivalent to STATIC on builds that
4016 dont have a noreturn as a declaration specifier
4018 #ifndef PERL_STATIC_NO_RET
4019 # define PERL_STATIC_NO_RET STATIC
4022 /* PERL_STATIC_INLINE_NO_RET is supposed to be equivalent to PERL_STATIC_INLINE
4023 * on builds that dont have a noreturn as a declaration specifier
4025 #ifndef PERL_STATIC_INLINE_NO_RET
4026 # define PERL_STATIC_INLINE_NO_RET PERL_STATIC_INLINE
4029 #ifndef PERL_STATIC_FORCE_INLINE
4030 # define PERL_STATIC_FORCE_INLINE PERL_STATIC_INLINE
4033 #ifndef PERL_STATIC_FORCE_INLINE_NO_RET
4034 # define PERL_STATIC_FORCE_INLINE_NO_RET PERL_STATIC_INLINE
4038 # include "iperlsys.h"
4041 #ifdef __LIBCATAMOUNT__
4042 #undef HAS_PASSWD /* unixish.h but not unixish enough. */
4044 #define FAKE_BIT_BUCKET
4047 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0.
4048 * Note that the USE_HASH_SEED and similar defines are *NOT* defined by
4049 * Configure, despite their names being similar to other defines like
4050 * USE_ITHREADS. Configure in fact knows nothing about the randomised
4051 * hashes. Therefore to enable/disable the hash randomisation defines
4052 * use the Configure -Accflags=... instead. */
4053 #if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED)
4054 # define USE_HASH_SEED
4060 /* macros to define bit-fields in structs. */
4061 #ifndef PERL_BITFIELD8
4062 # ifdef HAS_NON_INT_BITFIELDS
4063 # define PERL_BITFIELD8 U8
4065 # define PERL_BITFIELD8 unsigned
4068 #ifndef PERL_BITFIELD16
4069 # ifdef HAS_NON_INT_BITFIELDS
4070 # define PERL_BITFIELD16 U16
4072 # define PERL_BITFIELD16 unsigned
4075 #ifndef PERL_BITFIELD32
4076 # ifdef HAS_NON_INT_BITFIELDS
4077 # define PERL_BITFIELD32 U32
4079 # define PERL_BITFIELD32 unsigned
4090 #include "opnames.h"
4097 #include "warnings.h"
4100 /* these would be in doio.h if there was such a file */
4101 #define my_stat() my_stat_flags(SV_GMAGIC)
4102 #define my_lstat() my_lstat_flags(SV_GMAGIC)
4104 /* defined in sv.c, but also used in [ach]v.c */
4107 #undef _XPVCV_COMMON
4111 typedef struct magic_state MGS; /* struct magic_state defined in mg.c */
4113 #if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C) \
4114 || defined(PERL_EXT_RE_BUILD)
4116 /* These have to be predeclared, as they are used in proto.h which is #included
4117 * before their definitions in regcomp.h. */
4120 typedef struct regnode_charclass regnode_charclass;
4122 /* A hopefully less confusing name. The sub-classes are all Posix classes only
4123 * used under /l matching */
4124 typedef struct regnode_charclass_posixl regnode_charclass_class;
4125 typedef struct regnode_charclass_posixl regnode_charclass_posixl;
4127 typedef struct regnode_ssc regnode_ssc;
4128 typedef struct RExC_state_t RExC_state_t;
4129 struct _reg_trie_data;
4133 struct ptr_tbl_ent {
4134 struct ptr_tbl_ent* next;
4140 struct ptr_tbl_ent** tbl_ary;
4143 struct ptr_tbl_arena *tbl_arena;
4144 struct ptr_tbl_ent *tbl_arena_next;
4145 struct ptr_tbl_ent *tbl_arena_end;
4148 #if defined(htonl) && !defined(HAS_HTONL)
4151 #if defined(htons) && !defined(HAS_HTONS)
4154 #if defined(ntohl) && !defined(HAS_NTOHL)
4157 #if defined(ntohs) && !defined(HAS_NTOHS)
4165 # if (BYTEORDER & 0xffff) == 0x4321
4166 /* Big endian system, so ntohl, ntohs, htonl and htons do not need to
4167 re-order their values. However, to behave identically to the alternative
4168 implementations, they should truncate to the correct size. */
4169 # define ntohl(x) ((x)&0xFFFFFFFF)
4170 # define htonl(x) ntohl(x)
4171 # define ntohs(x) ((x)&0xFFFF)
4172 # define htons(x) ntohs(x)
4173 # elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
4175 /* Note that we can't straight out declare our own htonl and htons because
4176 the Win32 build process forcibly undefines HAS_HTONL etc for its miniperl,
4177 to avoid the overhead of initialising the socket subsystem, but the headers
4178 that *declare* the various functions are still seen. If we declare our own
4179 htonl etc they will clash with the declarations in the Win32 headers. */
4181 PERL_STATIC_INLINE U32
4182 my_swap32(const U32 x) {
4183 return ((x & 0xFF) << 24) | ((x >> 24) & 0xFF)
4184 | ((x & 0x0000FF00) << 8) | ((x & 0x00FF0000) >> 8);
4187 PERL_STATIC_INLINE U16
4188 my_swap16(const U16 x) {
4189 return ((x & 0xFF) << 8) | ((x >> 8) & 0xFF);
4192 # define htonl(x) my_swap32(x)
4193 # define ntohl(x) my_swap32(x)
4194 # define ntohs(x) my_swap16(x)
4195 # define htons(x) my_swap16(x)
4197 # error "Unsupported byteorder"
4198 /* The C pre-processor doesn't let us return the value of BYTEORDER as part of
4199 the error message. Please check the value of the macro BYTEORDER, as defined
4200 in config.h. The values of BYTEORDER we expect are
4202 big endian little endian
4203 32 bit 0x4321 0x1234
4204 64 bit 0x87654321 0x12345678
4206 If you have a system with a different byte order, please see
4207 pod/perlhack.pod for how to submit a patch to add supporting code.
4213 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
4216 #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
4217 /* Little endian system, so vtohl, vtohs, htovl and htovs do not need to
4218 re-order their values. However, to behave identically to the alternative
4219 implementations, they should truncate to the correct size. */
4220 # define vtohl(x) ((x)&0xFFFFFFFF)
4221 # define vtohs(x) ((x)&0xFFFF)
4222 # define htovl(x) vtohl(x)
4223 # define htovs(x) vtohs(x)
4224 #elif BYTEORDER == 0x4321 || BYTEORDER == 0x87654321
4225 # define vtohl(x) ((((x)&0xFF)<<24) \
4227 +(((x)&0x0000FF00)<<8) \
4228 +(((x)&0x00FF0000)>>8) )
4229 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
4230 # define htovl(x) vtohl(x)
4231 # define htovs(x) vtohs(x)
4233 # error "Unsupported byteorder"
4234 /* If you have need for current perl on PDP-11 or similar, and can help test
4235 that blead keeps working on a mixed-endian system, then see
4236 pod/perlhack.pod for how to submit patches to things working again. */
4239 /* *MAX Plus 1. A floating point value.
4240 Hopefully expressed in a way that dodgy floating point can't mess up.
4241 >> 2 rather than 1, so that value is safely less than I32_MAX after 1
4243 May find that some broken compiler will want the value cast to I32.
4244 [after the shift, as signed >> may not be as secure as unsigned >>]
4246 #define I32_MAX_P1 (2.0 * (1 + (((U32)I32_MAX) >> 1)))
4247 #define U32_MAX_P1 (4.0 * (1 + ((U32_MAX) >> 2)))
4248 /* For compilers that can't correctly cast NVs over 0x7FFFFFFF (or
4249 0x7FFFFFFFFFFFFFFF) to an unsigned integer. In the future, sizeof(UV)
4250 may be greater than sizeof(IV), so don't assume that half max UV is max IV.
4252 #define U32_MAX_P1_HALF (2.0 * (1 + ((U32_MAX) >> 2)))
4254 #define UV_MAX_P1 (4.0 * (1 + ((UV_MAX) >> 2)))
4255 #define IV_MAX_P1 (2.0 * (1 + (((UV)IV_MAX) >> 1)))
4256 #define UV_MAX_P1_HALF (2.0 * (1 + ((UV_MAX) >> 2)))
4258 /* This may look like unnecessary jumping through hoops, but converting
4259 out of range floating point values to integers *is* undefined behaviour,
4260 and it is starting to bite.
4262 =for apidoc_section $casting
4263 =for apidoc Am|I32|I_32|NV what
4264 Cast an NV to I32 while avoiding undefined C behavior
4266 =for apidoc Am|U32|U_32|NV what
4267 Cast an NV to U32 while avoiding undefined C behavior
4269 =for apidoc Am|IV|I_V|NV what
4270 Cast an NV to IV while avoiding undefined C behavior
4272 =for apidoc Am|UV|U_V|NV what
4273 Cast an NV to UV while avoiding undefined C behavior
4278 #define I_32(what) (cast_i32((NV)(what)))
4279 #define U_32(what) (cast_ulong((NV)(what)))
4280 #define I_V(what) (cast_iv((NV)(what)))
4281 #define U_V(what) (cast_uv((NV)(what)))
4283 #define I_32(n) ((n) < I32_MAX_P1 ? ((n) < I32_MIN ? I32_MIN : (I32) (n)) \
4284 : ((n) < U32_MAX_P1 ? (I32)(U32) (n) \
4285 : ((n) > 0 ? (I32) U32_MAX : 0 /* NaN */)))
4286 #define U_32(n) ((n) < 0.0 ? ((n) < I32_MIN ? (UV) I32_MIN : (U32)(I32) (n)) \
4287 : ((n) < U32_MAX_P1 ? (U32) (n) \
4288 : ((n) > 0 ? U32_MAX : 0 /* NaN */)))
4289 #define I_V(n) (LIKELY((n) < IV_MAX_P1) ? (UNLIKELY((n) < IV_MIN) ? IV_MIN : (IV) (n)) \
4290 : (LIKELY((n) < UV_MAX_P1) ? (IV)(UV) (n) \
4291 : ((n) > 0 ? (IV)UV_MAX : 0 /* NaN */)))
4292 #define U_V(n) ((n) < 0.0 ? (UNLIKELY((n) < IV_MIN) ? (UV) IV_MIN : (UV)(IV) (n)) \
4293 : (LIKELY((n) < UV_MAX_P1) ? (UV) (n) \
4294 : ((n) > 0 ? UV_MAX : 0 /* NaN */)))
4297 #define U_S(what) ((U16)U_32(what))
4298 #define U_I(what) ((unsigned int)U_32(what))
4299 #define U_L(what) U_32(what)
4302 =for apidoc_section $integer
4303 =for apidoc Amn|IV|IV_MAX
4304 The largest signed integer that fits in an IV on this platform.
4306 =for apidoc Amn|IV|IV_MIN
4307 The negative signed integer furthest away from 0 that fits in an IV on this
4310 =for apidoc Amn|UV|UV_MAX
4311 The largest unsigned integer that fits in a UV on this platform.
4313 =for apidoc Amn|UV|UV_MIN
4314 The smallest unsigned integer that fits in a UV on this platform. It should
4321 # ifndef Perl_signbit
4322 # define Perl_signbit signbit
4326 /* These do not care about the fractional part, only about the range. */
4327 #define NV_WITHIN_IV(nv) (I_V(nv) >= IV_MIN && I_V(nv) <= IV_MAX)
4328 #define NV_WITHIN_UV(nv) ((nv)>=0.0 && U_V(nv) >= UV_MIN && U_V(nv) <= UV_MAX)
4330 /* Used with UV/IV arguments: */
4331 /* XXXX: need to speed it up */
4332 #define CLUMP_2UV(iv) ((iv) < 0 ? 0 : (UV)(iv))
4333 #define CLUMP_2IV(uv) ((uv) > (UV)IV_MAX ? IV_MAX : (IV)(uv))
4341 Uid_t getuid (void);
4342 Uid_t geteuid (void);
4343 Gid_t getgid (void);
4344 Gid_t getegid (void);
4348 #ifndef Perl_debug_log
4349 # define Perl_debug_log PerlIO_stderr()
4352 #ifndef Perl_error_log
4353 # define Perl_error_log (PL_stderrgv \
4354 && isGV(PL_stderrgv) \
4355 && GvIOp(PL_stderrgv) \
4356 && IoOFP(GvIOp(PL_stderrgv)) \
4357 ? IoOFP(GvIOp(PL_stderrgv)) \
4362 #define DEBUG_p_FLAG 0x00000001 /* 1 */
4363 #define DEBUG_s_FLAG 0x00000002 /* 2 */
4364 #define DEBUG_l_FLAG 0x00000004 /* 4 */
4365 #define DEBUG_t_FLAG 0x00000008 /* 8 */
4366 #define DEBUG_o_FLAG 0x00000010 /* 16 */
4367 #define DEBUG_c_FLAG 0x00000020 /* 32 */
4368 #define DEBUG_P_FLAG 0x00000040 /* 64 */
4369 #define DEBUG_m_FLAG 0x00000080 /* 128 */
4370 #define DEBUG_f_FLAG 0x00000100 /* 256 */
4371 #define DEBUG_r_FLAG 0x00000200 /* 512 */
4372 #define DEBUG_x_FLAG 0x00000400 /* 1024 */
4373 #define DEBUG_u_FLAG 0x00000800 /* 2048 */
4374 /* U is reserved for Unofficial, exploratory hacking */
4375 #define DEBUG_U_FLAG 0x00001000 /* 4096 */
4377 #define DEBUG_X_FLAG 0x00004000 /* 16384 */
4378 #define DEBUG_D_FLAG 0x00008000 /* 32768 */
4379 #define DEBUG_S_FLAG 0x00010000 /* 65536 */
4380 #define DEBUG_T_FLAG 0x00020000 /* 131072 */
4381 #define DEBUG_R_FLAG 0x00040000 /* 262144 */
4382 #define DEBUG_J_FLAG 0x00080000 /* 524288 */
4383 #define DEBUG_v_FLAG 0x00100000 /*1048576 */
4384 #define DEBUG_C_FLAG 0x00200000 /*2097152 */
4385 #define DEBUG_A_FLAG 0x00400000 /*4194304 */
4386 #define DEBUG_q_FLAG 0x00800000 /*8388608 */
4387 #define DEBUG_M_FLAG 0x01000000 /*16777216*/
4388 #define DEBUG_B_FLAG 0x02000000 /*33554432*/
4389 #define DEBUG_L_FLAG 0x04000000 /*67108864*/
4390 #define DEBUG_i_FLAG 0x08000000 /*134217728*/
4391 #define DEBUG_y_FLAG 0x10000000 /*268435456*/
4392 #define DEBUG_MASK 0x1FFFEFFF /* mask of all the standard flags */
4394 #define DEBUG_DB_RECURSE_FLAG 0x40000000
4395 #define DEBUG_TOP_FLAG 0x80000000 /* -D was given --> PL_debug |= FLAG */
4397 /* Both flags have to be set */
4398 # define DEBUG_BOTH_FLAGS_TEST_(flag1, flag2) \
4399 UNLIKELY((PL_debug & ((flag1)|(flag2))) \
4400 == ((flag1)|(flag2)))
4402 # define DEBUG_p_TEST_ UNLIKELY(PL_debug & DEBUG_p_FLAG)
4403 # define DEBUG_s_TEST_ UNLIKELY(PL_debug & DEBUG_s_FLAG)
4404 # define DEBUG_l_TEST_ UNLIKELY(PL_debug & DEBUG_l_FLAG)
4405 # define DEBUG_t_TEST_ UNLIKELY(PL_debug & DEBUG_t_FLAG)
4406 # define DEBUG_o_TEST_ UNLIKELY(PL_debug & DEBUG_o_FLAG)
4407 # define DEBUG_c_TEST_ UNLIKELY(PL_debug & DEBUG_c_FLAG)
4408 # define DEBUG_P_TEST_ UNLIKELY(PL_debug & DEBUG_P_FLAG)
4409 # define DEBUG_m_TEST_ UNLIKELY(PL_debug & DEBUG_m_FLAG)
4410 # define DEBUG_f_TEST_ UNLIKELY(PL_debug & DEBUG_f_FLAG)
4411 # define DEBUG_r_TEST_ UNLIKELY(PL_debug & DEBUG_r_FLAG)
4412 # define DEBUG_x_TEST_ UNLIKELY(PL_debug & DEBUG_x_FLAG)
4413 # define DEBUG_u_TEST_ UNLIKELY(PL_debug & DEBUG_u_FLAG)
4414 # define DEBUG_U_TEST_ UNLIKELY(PL_debug & DEBUG_U_FLAG)
4415 # define DEBUG_X_TEST_ UNLIKELY(PL_debug & DEBUG_X_FLAG)
4416 # define DEBUG_D_TEST_ UNLIKELY(PL_debug & DEBUG_D_FLAG)
4417 # define DEBUG_S_TEST_ UNLIKELY(PL_debug & DEBUG_S_FLAG)
4418 # define DEBUG_T_TEST_ UNLIKELY(PL_debug & DEBUG_T_FLAG)
4419 # define DEBUG_R_TEST_ UNLIKELY(PL_debug & DEBUG_R_FLAG)
4420 # define DEBUG_J_TEST_ UNLIKELY(PL_debug & DEBUG_J_FLAG)
4421 # define DEBUG_v_TEST_ UNLIKELY(PL_debug & DEBUG_v_FLAG)
4422 # define DEBUG_C_TEST_ UNLIKELY(PL_debug & DEBUG_C_FLAG)
4423 # define DEBUG_A_TEST_ UNLIKELY(PL_debug & DEBUG_A_FLAG)
4424 # define DEBUG_q_TEST_ UNLIKELY(PL_debug & DEBUG_q_FLAG)
4425 # define DEBUG_M_TEST_ UNLIKELY(PL_debug & DEBUG_M_FLAG)
4426 # define DEBUG_B_TEST_ UNLIKELY(PL_debug & DEBUG_B_FLAG)
4427 # define DEBUG_L_TEST_ UNLIKELY(PL_debug & DEBUG_L_FLAG)
4428 # define DEBUG_i_TEST_ UNLIKELY(PL_debug & DEBUG_i_FLAG)
4429 # define DEBUG_y_TEST_ UNLIKELY(PL_debug & DEBUG_y_FLAG)
4430 # define DEBUG_Xv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_X_FLAG, DEBUG_v_FLAG)
4431 # define DEBUG_Uv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_U_FLAG, DEBUG_v_FLAG)
4432 # define DEBUG_Pv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_P_FLAG, DEBUG_v_FLAG)
4433 # define DEBUG_Lv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_L_FLAG, DEBUG_v_FLAG)
4434 # define DEBUG_yv_TEST_ DEBUG_BOTH_FLAGS_TEST_(DEBUG_y_FLAG, DEBUG_v_FLAG)
4438 # define DEBUG_p_TEST DEBUG_p_TEST_
4439 # define DEBUG_s_TEST DEBUG_s_TEST_
4440 # define DEBUG_l_TEST DEBUG_l_TEST_
4441 # define DEBUG_t_TEST DEBUG_t_TEST_
4442 # define DEBUG_o_TEST DEBUG_o_TEST_
4443 # define DEBUG_c_TEST DEBUG_c_TEST_
4444 # define DEBUG_P_TEST DEBUG_P_TEST_
4445 # define DEBUG_m_TEST DEBUG_m_TEST_
4446 # define DEBUG_f_TEST DEBUG_f_TEST_
4447 # define DEBUG_r_TEST DEBUG_r_TEST_
4448 # define DEBUG_x_TEST DEBUG_x_TEST_
4449 # define DEBUG_u_TEST DEBUG_u_TEST_
4450 # define DEBUG_U_TEST DEBUG_U_TEST_
4451 # define DEBUG_X_TEST DEBUG_X_TEST_
4452 # define DEBUG_D_TEST DEBUG_D_TEST_
4453 # define DEBUG_S_TEST DEBUG_S_TEST_
4454 # define DEBUG_T_TEST DEBUG_T_TEST_
4455 # define DEBUG_R_TEST DEBUG_R_TEST_
4456 # define DEBUG_J_TEST DEBUG_J_TEST_
4457 # define DEBUG_v_TEST DEBUG_v_TEST_
4458 # define DEBUG_C_TEST DEBUG_C_TEST_
4459 # define DEBUG_A_TEST DEBUG_A_TEST_
4460 # define DEBUG_q_TEST DEBUG_q_TEST_
4461 # define DEBUG_M_TEST DEBUG_M_TEST_
4462 # define DEBUG_B_TEST DEBUG_B_TEST_
4463 # define DEBUG_L_TEST DEBUG_L_TEST_
4464 # define DEBUG_i_TEST DEBUG_i_TEST_
4465 # define DEBUG_y_TEST DEBUG_y_TEST_
4466 # define DEBUG_Xv_TEST DEBUG_Xv_TEST_
4467 # define DEBUG_Uv_TEST DEBUG_Uv_TEST_
4468 # define DEBUG_Pv_TEST DEBUG_Pv_TEST_
4469 # define DEBUG_Lv_TEST DEBUG_Lv_TEST_
4470 # define DEBUG_yv_TEST DEBUG_yv_TEST_
4472 # define PERL_DEB(a) a
4473 # define PERL_DEB2(a,b) a
4474 # define PERL_DEBUG(a) if (PL_debug) a
4475 # define DEBUG_p(a) if (DEBUG_p_TEST) a
4476 # define DEBUG_s(a) if (DEBUG_s_TEST) a
4477 # define DEBUG_l(a) if (DEBUG_l_TEST) a
4478 # define DEBUG_t(a) if (DEBUG_t_TEST) a
4479 # define DEBUG_o(a) if (DEBUG_o_TEST) a
4480 # define DEBUG_c(a) if (DEBUG_c_TEST) a
4481 # define DEBUG_P(a) if (DEBUG_P_TEST) a
4483 /* Temporarily turn off memory debugging in case the a
4484 * does memory allocation, either directly or indirectly. */
4485 # define DEBUG_m(a) \
4487 if (PERL_GET_INTERP) { \
4489 if (DEBUG_m_TEST) { \
4490 PL_debug &= ~DEBUG_m_FLAG; \
4492 PL_debug |= DEBUG_m_FLAG; \
4497 /* These allow you to customize your debugging output for specialized,
4498 * generally temporary ad-hoc purposes. For example, if you need 'errno'
4499 * preserved, you can add definitions to these macros (either in this file for
4500 * the whole program, or before the #include "perl.h" in a particular .c file
4501 * you're trying to debug) and recompile:
4503 * #define DEBUG_PRE_STMTS dSAVE_ERRNO;
4504 * #define DEBUG_POST_STMTS RESTORE_ERRNO;
4506 * Other potential things include displaying timestamps, location information,
4507 * which thread, etc. Heres an example with both errno and location info:
4509 * #define DEBUG_PRE_STMTS dSAVE_ERRNO; \
4510 * PerlIO_printf(Perl_debug_log, "%s:%d: ", __FILE__, __LINE__);
4511 * #define DEBUG_POST RESTORE_ERRNO;
4513 * All DEBUG statements in the compiled scope will be have these extra
4514 * statements compiled in; they will be executed only for the DEBUG statements
4515 * whose flags are turned on.
4517 #ifndef DEBUG_PRE_STMTS
4518 # define DEBUG_PRE_STMTS
4520 #ifndef DEBUG_POST_STMTS
4521 # define DEBUG_POST_STMTS
4524 # define DEBUG__(t, a) \
4526 if (t) STMT_START { \
4527 DEBUG_PRE_STMTS a; DEBUG_POST_STMTS \
4531 # define DEBUG_f(a) DEBUG__(DEBUG_f_TEST, a)
4533 /* For re_comp.c, re_exec.c, assume -Dr has been specified */
4534 # ifdef PERL_EXT_RE_BUILD
4535 # define DEBUG_r(a) STMT_START { \
4536 DEBUG_PRE_STMTS a; DEBUG_POST_STMTS \
4539 # define DEBUG_r(a) DEBUG__(DEBUG_r_TEST, a)
4540 # endif /* PERL_EXT_RE_BUILD */
4542 # define DEBUG_x(a) DEBUG__(DEBUG_x_TEST, a)
4543 # define DEBUG_u(a) DEBUG__(DEBUG_u_TEST, a)
4544 # define DEBUG_U(a) DEBUG__(DEBUG_U_TEST, a)
4545 # define DEBUG_X(a) DEBUG__(DEBUG_X_TEST, a)
4546 # define DEBUG_D(a) DEBUG__(DEBUG_D_TEST, a)
4547 # define DEBUG_Xv(a) DEBUG__(DEBUG_Xv_TEST, a)
4548 # define DEBUG_Uv(a) DEBUG__(DEBUG_Uv_TEST, a)
4549 # define DEBUG_Pv(a) DEBUG__(DEBUG_Pv_TEST, a)
4550 # define DEBUG_Lv(a) DEBUG__(DEBUG_Lv_TEST, a)
4551 # define DEBUG_yv(a) DEBUG__(DEBUG_yv_TEST, a)
4553 # define DEBUG_S(a) DEBUG__(DEBUG_S_TEST, a)
4554 # define DEBUG_T(a) DEBUG__(DEBUG_T_TEST, a)
4555 # define DEBUG_R(a) DEBUG__(DEBUG_R_TEST, a)
4556 # define DEBUG_v(a) DEBUG__(DEBUG_v_TEST, a)
4557 # define DEBUG_C(a) DEBUG__(DEBUG_C_TEST, a)
4558 # define DEBUG_A(a) DEBUG__(DEBUG_A_TEST, a)
4559 # define DEBUG_q(a) DEBUG__(DEBUG_q_TEST, a)
4560 # define DEBUG_M(a) DEBUG__(DEBUG_M_TEST, a)
4561 # define DEBUG_B(a) DEBUG__(DEBUG_B_TEST, a)
4562 # define DEBUG_L(a) DEBUG__(DEBUG_L_TEST, a)
4563 # define DEBUG_i(a) DEBUG__(DEBUG_i_TEST, a)
4564 # define DEBUG_y(a) DEBUG__(DEBUG_y_TEST, a)
4566 #else /* ! DEBUGGING below */
4568 # define DEBUG_p_TEST (0)
4569 # define DEBUG_s_TEST (0)
4570 # define DEBUG_l_TEST (0)
4571 # define DEBUG_t_TEST (0)
4572 # define DEBUG_o_TEST (0)
4573 # define DEBUG_c_TEST (0)
4574 # define DEBUG_P_TEST (0)
4575 # define DEBUG_m_TEST (0)
4576 # define DEBUG_f_TEST (0)
4577 # define DEBUG_r_TEST (0)
4578 # define DEBUG_x_TEST (0)
4579 # define DEBUG_u_TEST (0)
4580 # define DEBUG_U_TEST (0)
4581 # define DEBUG_X_TEST (0)
4582 # define DEBUG_D_TEST (0)
4583 # define DEBUG_S_TEST (0)
4584 # define DEBUG_T_TEST (0)
4585 # define DEBUG_R_TEST (0)
4586 # define DEBUG_J_TEST (0)
4587 # define DEBUG_v_TEST (0)
4588 # define DEBUG_C_TEST (0)
4589 # define DEBUG_A_TEST (0)
4590 # define DEBUG_q_TEST (0)
4591 # define DEBUG_M_TEST (0)
4592 # define DEBUG_B_TEST (0)
4593 # define DEBUG_L_TEST (0)
4594 # define DEBUG_i_TEST (0)
4595 # define DEBUG_y_TEST (0)
4596 # define DEBUG_Xv_TEST (0)
4597 # define DEBUG_Uv_TEST (0)
4598 # define DEBUG_Pv_TEST (0)
4599 # define DEBUG_Lv_TEST (0)
4600 # define DEBUG_yv_TEST (0)
4602 # define PERL_DEB(a)
4603 # define PERL_DEB2(a,b) b
4604 # define PERL_DEBUG(a)
4632 # define DEBUG_Xv(a)
4633 # define DEBUG_Uv(a)
4634 # define DEBUG_Pv(a)
4635 # define DEBUG_Lv(a)
4636 # define DEBUG_yv(a)
4637 #endif /* DEBUGGING */
4640 #define DEBUG_SCOPE(where) \
4642 Perl_deb(aTHX_ "%s scope %ld (savestack=%ld) at %s:%d\n", \
4643 where, (long)PL_scopestack_ix, (long)PL_savestack_ix, \
4644 __FILE__, __LINE__));
4646 /* Keep the old croak based assert for those who want it, and as a fallback if
4647 the platform is so heretically non-ANSI that it can't assert. */
4649 #define Perl_assert(what) PERL_DEB2( \
4650 ((what) ? ((void) 0) : \
4651 (Perl_croak_nocontext("Assertion %s failed: file \"" __FILE__ \
4652 "\", line %d", STRINGIFY(what), __LINE__), \
4653 (void) 0)), ((void)0))
4655 /* assert() gets defined if DEBUGGING.
4656 * If no DEBUGGING, the <assert.h> has not been included. */
4658 # define assert(what) Perl_assert(what)
4661 # define assert_(what) assert(what),
4663 # define assert_(what)
4667 I32 (*uf_val)(pTHX_ IV, SV*);
4668 I32 (*uf_set)(pTHX_ IV, SV*);
4672 /* In pre-5.7-Perls the PERL_MAGIC_uvar magic didn't get the thread context.
4673 * XS code wanting to be backward compatible can do something
4674 * like the following:
4676 #ifndef PERL_MG_UFUNC
4677 #define PERL_MG_UFUNC(name,ix,sv) I32 name(IV ix, SV *sv)
4680 static PERL_MG_UFUNC(foo_get, index, val)
4690 #ifndef PERL_MG_UFUNC
4691 #define PERL_MG_UFUNC(name,ix,sv) I32 name(pTHX_ IV ix, SV *sv)
4696 /* isfinite and others are here rather than in math.h as C99 stipulates */
4701 # if !defined(WIN32) && !defined(VMS)
4703 char *crypt (const char*, const char*);
4705 # endif /* !WIN32 */
4708 char *getlogin (void);
4710 # endif /* !WIN32 */
4711 #endif /* !__cplusplus */
4713 /* Fixme on VMS. This needs to be a run-time, not build time options */
4714 /* Also rename() is affected by this */
4715 #ifdef UNLINK_ALL_VERSIONS /* Currently only makes sense for VMS */
4716 #define UNLINK unlnk
4717 I32 unlnk (pTHX_ const char*);
4719 #define UNLINK PerlLIO_unlink
4722 /* some versions of glibc are missing the setresuid() proto */
4723 #if defined(HAS_SETRESUID) && !defined(HAS_SETRESUID_PROTO)
4724 int setresuid(uid_t ruid, uid_t euid, uid_t suid);
4726 /* some versions of glibc are missing the setresgid() proto */
4727 #if defined(HAS_SETRESGID) && !defined(HAS_SETRESGID_PROTO)
4728 int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
4731 #ifndef HAS_SETREUID
4732 # ifdef HAS_SETRESUID
4733 # define setreuid(r,e) setresuid(r,e,(Uid_t)-1)
4734 # define HAS_SETREUID
4737 #ifndef HAS_SETREGID
4738 # ifdef HAS_SETRESGID
4739 # define setregid(r,e) setresgid(r,e,(Gid_t)-1)
4740 # define HAS_SETREGID
4744 /* Sighandler_t defined in iperlsys.h */
4746 #ifdef HAS_SIGACTION
4747 typedef struct sigaction Sigsave_t;
4749 typedef Sighandler_t Sigsave_t;
4760 # define RUNOPS_DEFAULT Perl_runops_debug
4762 # define RUNOPS_DEFAULT Perl_runops_standard
4765 #if defined(USE_PERLIO)
4766 EXTERN_C void PerlIO_teardown(void);
4767 # ifdef USE_ITHREADS
4768 # define PERLIO_INIT MUTEX_INIT(&PL_perlio_mutex)
4769 # define PERLIO_TERM \
4771 PerlIO_teardown(); \
4772 MUTEX_DESTROY(&PL_perlio_mutex);\
4775 # define PERLIO_INIT
4776 # define PERLIO_TERM PerlIO_teardown()
4779 # define PERLIO_INIT
4780 # define PERLIO_TERM
4784 # ifdef MUTEX_INIT_CALLS_MALLOC
4785 # define MALLOC_INIT \
4787 PL_malloc_mutex = NULL; \
4788 MUTEX_INIT(&PL_malloc_mutex); \
4790 # define MALLOC_TERM \
4792 perl_mutex tmp = PL_malloc_mutex; \
4793 PL_malloc_mutex = NULL; \
4794 MUTEX_DESTROY(&tmp); \
4797 # define MALLOC_INIT MUTEX_INIT(&PL_malloc_mutex)
4798 # define MALLOC_TERM MUTEX_DESTROY(&PL_malloc_mutex)
4801 # define MALLOC_INIT
4802 # define MALLOC_TERM
4805 #if defined(MULTIPLICITY)
4807 struct perl_memory_debug_header;
4808 struct perl_memory_debug_header {
4810 # if defined(PERL_POISON) || defined(PERL_DEBUG_READONLY_COW)
4813 struct perl_memory_debug_header *prev;
4814 struct perl_memory_debug_header *next;
4815 # ifdef PERL_DEBUG_READONLY_COW
4820 #elif defined(PERL_DEBUG_READONLY_COW)
4822 struct perl_memory_debug_header;
4823 struct perl_memory_debug_header {
4829 #if defined (PERL_TRACK_MEMPOOL) || defined (PERL_DEBUG_READONLY_COW)
4831 # define PERL_MEMORY_DEBUG_HEADER_SIZE \
4832 (sizeof(struct perl_memory_debug_header) + \
4833 (MEM_ALIGNBYTES - sizeof(struct perl_memory_debug_header) \
4834 %MEM_ALIGNBYTES) % MEM_ALIGNBYTES)
4837 # define PERL_MEMORY_DEBUG_HEADER_SIZE 0
4840 #ifdef PERL_TRACK_MEMPOOL
4841 # ifdef PERL_DEBUG_READONLY_COW
4842 # define INIT_TRACK_MEMPOOL(header, interp) \
4844 (header).interpreter = (interp); \
4845 (header).prev = (header).next = &(header); \
4846 (header).readonly = 0; \
4849 # define INIT_TRACK_MEMPOOL(header, interp) \
4851 (header).interpreter = (interp); \
4852 (header).prev = (header).next = &(header); \
4856 # define INIT_TRACK_MEMPOOL(header, interp)
4859 #ifdef I_MALLOCMALLOC
4860 /* Needed for malloc_size(), malloc_good_size() on some systems */
4861 # include <malloc/malloc.h>
4865 # define Perl_safesysmalloc_size(where) Perl_malloced_size(where)
4867 # if defined(HAS_MALLOC_SIZE) && !defined(PERL_DEBUG_READONLY_COW)
4868 # ifdef PERL_TRACK_MEMPOOL
4869 # define Perl_safesysmalloc_size(where) \
4870 (malloc_size(((char *)(where)) - PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
4872 # define Perl_safesysmalloc_size(where) malloc_size(where)
4875 # ifdef HAS_MALLOC_GOOD_SIZE
4876 # ifdef PERL_TRACK_MEMPOOL
4877 # define Perl_malloc_good_size(how_much) \
4878 (malloc_good_size((how_much) + PERL_MEMORY_DEBUG_HEADER_SIZE) - PERL_MEMORY_DEBUG_HEADER_SIZE)
4880 # define Perl_malloc_good_size(how_much) malloc_good_size(how_much)
4883 /* Having this as the identity operation makes some code simpler. */
4884 # define Perl_malloc_good_size(how_much) (how_much)
4888 typedef int (*runops_proc_t)(pTHX);
4889 typedef void (*share_proc_t) (pTHX_ SV *sv);
4890 typedef int (*thrhook_proc_t) (pTHX);
4891 typedef OP* (*PPADDR_t[]) (pTHX);
4892 typedef bool (*destroyable_proc_t) (pTHX_ SV *sv);
4893 typedef void (*despatch_signals_proc_t) (pTHX);
4895 #if defined(__DYNAMIC__) && defined(PERL_DARWIN) && defined(PERL_CORE)
4896 # include <crt_externs.h> /* for the env array */
4897 # define environ (*_NSGetEnviron())
4898 #elif defined(USE_ENVIRON_ARRAY) && !defined(environ)
4899 /* VMS and some other platforms don't use the environ array */
4900 EXTERN_C char **environ; /* environment variables supplied via exec */
4903 #define PERL_PATCHLEVEL_H_IMPLICIT
4904 #include "patchlevel.h"
4905 #undef PERL_PATCHLEVEL_H_IMPLICIT
4907 #define PERL_VERSION_STRING STRINGIFY(PERL_REVISION) "." \
4908 STRINGIFY(PERL_VERSION) "." \
4909 STRINGIFY(PERL_SUBVERSION)
4911 #define PERL_API_VERSION_STRING STRINGIFY(PERL_API_REVISION) "." \
4912 STRINGIFY(PERL_API_VERSION) "." \
4913 STRINGIFY(PERL_API_SUBVERSION)
4917 /* handy constants */
4918 EXTCONST char PL_warn_uninit[]
4919 INIT("Use of uninitialized value%s%s%s");
4920 EXTCONST char PL_warn_uninit_sv[]
4921 INIT("Use of uninitialized value%" SVf "%s%s");
4922 EXTCONST char PL_warn_nosemi[]
4923 INIT("Semicolon seems to be missing");
4924 EXTCONST char PL_warn_reserved[]
4925 INIT("Unquoted string \"%s\" may clash with future reserved word");
4926 EXTCONST char PL_warn_nl[]
4927 INIT("Unsuccessful %s on filename containing newline");
4928 EXTCONST char PL_no_wrongref[]
4929 INIT("Can't use %s ref as %s ref");
4930 /* The core no longer needs this here. If you require the string constant,
4931 please inline a copy into your own code. */
4932 EXTCONST char PL_no_symref[] __attribute__deprecated__
4933 INIT("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use");
4934 EXTCONST char PL_no_symref_sv[]
4935 INIT("Can't use string (\"%" SVf32 "\"%s) as %s ref while \"strict refs\" in use");
4937 EXTCONST char PL_no_usym[]
4938 INIT("Can't use an undefined value as %s reference");
4939 EXTCONST char PL_no_aelem[]
4940 INIT("Modification of non-creatable array value attempted, subscript %d");
4941 EXTCONST char PL_no_helem_sv[]
4942 INIT("Modification of non-creatable hash value attempted, subscript \"%" SVf "\"");
4943 EXTCONST char PL_no_modify[]
4944 INIT("Modification of a read-only value attempted");
4945 EXTCONST char PL_no_mem[sizeof("Out of memory!\n")]
4946 INIT("Out of memory!\n");
4947 EXTCONST char PL_no_security[]
4948 INIT("Insecure dependency in %s%s");
4949 EXTCONST char PL_no_sock_func[]
4950 INIT("Unsupported socket function \"%s\" called");
4951 EXTCONST char PL_no_dir_func[]
4952 INIT("Unsupported directory function \"%s\" called");
4953 EXTCONST char PL_no_func[]
4954 INIT("The %s function is unimplemented");
4955 EXTCONST char PL_no_myglob[]
4956 INIT("\"%s\" %s %s can't be in a package");
4957 EXTCONST char PL_no_localize_ref[]
4958 INIT("Can't localize through a reference");
4959 EXTCONST char PL_memory_wrap[]
4960 INIT("panic: memory wrap");
4961 EXTCONST char PL_extended_cp_format[]
4962 INIT("Code point 0x%" UVXf " is not Unicode, requires a Perl extension,"
4963 " and so is not portable");
4964 EXTCONST char PL_Yes[]
4966 EXTCONST char PL_No[]
4968 EXTCONST char PL_Zero[]
4972 =for apidoc_section $numeric
4973 =for apidoc AmTuU|const char *|PL_hexdigit|U8 value
4975 This array, indexed by an integer, converts that value into the character that
4976 represents it. For example, if the input is 8, the return will be a string
4977 whose first character is '8'. What is actually returned is a pointer into a
4978 string. All you are interested in is the first character of that string. To
4979 get uppercase letters (for the values 10..15), add 16 to the index. Hence,
4980 C<PL_hexdigit[11]> is C<'b'>, and C<PL_hexdigit[11+16]> is C<'B'>.