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perl.h
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/* perl.h
*
* Copyright (c) 1987-2001, 2003 Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
#ifndef H_PERL
#define H_PERL 1
#ifdef PERL_FOR_X2P
/*
* This file is being used for x2p stuff.
* Above symbol is defined via -D in 'x2p/Makefile.SH'
* Decouple x2p stuff from some of perls more extreme eccentricities.
*/
#undef MULTIPLICITY
#undef USE_STDIO
#define USE_STDIO
#endif /* PERL_FOR_X2P */
#ifdef VOIDUSED
# undef VOIDUSED
#endif
#define VOIDUSED 1
#include "config.h"
#if defined(USE_ITHREADS) && defined(USE_5005THREADS)
# include "error: USE_ITHREADS and USE_5005THREADS are incompatible"
#endif
/* XXX This next guard can disappear if the sources are revised
to use USE_5005THREADS throughout. -- A.D 1/6/2000
*/
#if defined(USE_ITHREADS) && defined(USE_THREADS)
# include "error: USE_ITHREADS and USE_THREADS are incompatible"
#endif
/* See L<perlguts/"The Perl API"> for detailed notes on
* PERL_IMPLICIT_CONTEXT and PERL_IMPLICIT_SYS */
#ifdef USE_ITHREADS
# if !defined(MULTIPLICITY) && !defined(PERL_OBJECT)
# define MULTIPLICITY
# endif
#endif
#ifdef USE_THREADS
# ifndef PERL_IMPLICIT_CONTEXT
# define PERL_IMPLICIT_CONTEXT
# endif
#endif
#if defined(MULTIPLICITY)
# ifndef PERL_IMPLICIT_CONTEXT
# define PERL_IMPLICIT_CONTEXT
# endif
#endif
#ifdef PERL_CAPI
# undef PERL_OBJECT
# ifndef MULTIPLICITY
# define MULTIPLICITY
# endif
# ifndef PERL_IMPLICIT_CONTEXT
# define PERL_IMPLICIT_CONTEXT
# endif
# ifndef PERL_IMPLICIT_SYS
# define PERL_IMPLICIT_SYS
# endif
#endif
#ifdef PERL_OBJECT
# ifndef PERL_IMPLICIT_CONTEXT
# define PERL_IMPLICIT_CONTEXT
# endif
# ifndef PERL_IMPLICIT_SYS
# define PERL_IMPLICIT_SYS
# endif
#endif
#ifdef PERL_OBJECT
/* PERL_OBJECT explained - DickH and DougL @ ActiveState.com
Defining PERL_OBJECT turns on creation of a C++ object that
contains all writable core perl global variables and functions.
Stated another way, all necessary global variables and functions
are members of a big C++ object. This object's class is CPerlObj.
This allows a Perl Host to have multiple, independent perl
interpreters in the same process space. This is very important on
Win32 systems as the overhead of process creation is quite high --
this could be even higher than the script compile and execute time
for small scripts.
The perl executable implementation on Win32 is composed of perl.exe
(the Perl Host) and perlX.dll. (the Perl Core). This allows the
same Perl Core to easily be embedded in other applications that use
the perl interpreter.
+-----------+
| Perl Host |
+-----------+
^
|
v
+-----------+ +-----------+
| Perl Core |<->| Extension |
+-----------+ +-----------+ ...
Defining PERL_OBJECT has the following effects:
PERL CORE
1. CPerlObj is defined (this is the PERL_OBJECT)
2. all static functions that needed to access either global
variables or functions needed are made member functions
3. all writable static variables are made member variables
4. all global variables and functions are defined as:
#define var CPerlObj::PL_var
#define func CPerlObj::Perl_func
* these are in embed.h
This necessitated renaming some local variables and functions that
had the same name as a global variable or function. This was
probably a _good_ thing anyway.
EXTENSIONS
1. Access to global variables and perl functions is through a
pointer to the PERL_OBJECT. This pointer type is CPerlObj*. This is
made transparent to extension developers by the following macros:
#define var pPerl->PL_var
#define func pPerl->Perl_func
* these are done in objXSUB.h
This requires that the extension be compiled as C++, which means
that the code must be ANSI C and not K&R C. For K&R extensions,
please see the C API notes located in Win32/GenCAPI.pl. This script
creates a perlCAPI.lib that provides a K & R compatible C interface
to the PERL_OBJECT.
2. Local variables and functions cannot have the same name as perl's
variables or functions since the macros will redefine these. Look for
this if you get some strange error message and it does not look like
the code that you had written. This often happens with variables that
are local to a function.
PERL HOST
1. The perl host is linked with perlX.lib to get perl_alloc. This
function will return a pointer to CPerlObj (the PERL_OBJECT). It
takes pointers to the various PerlXXX_YYY interfaces (see iperlsys.h
for more information on this).
2. The perl host calls the same functions as normally would be
called in setting up and running a perl script, except that the
functions are now member functions of the PERL_OBJECT.
*/
class CPerlObj;
#define STATIC
#define CPERLscope(x) CPerlObj::x
#define CALL_FPTR(fptr) (aTHXo->*fptr)
#define pTHXo CPerlObj *pPerl
#define pTHXo_ pTHXo,
#define aTHXo this
#define aTHXo_ this,
#define PERL_OBJECT_THIS aTHXo
#define PERL_OBJECT_THIS_ aTHXo_
#define dTHXoa(a) pTHXo = (CPerlObj*)a
#define dTHXo pTHXo = PERL_GET_THX
#define pTHXx void
#define pTHXx_
#define aTHXx
#define aTHXx_
#else /* !PERL_OBJECT */
#ifdef PERL_IMPLICIT_CONTEXT
# ifdef USE_THREADS
struct perl_thread;
# define pTHX register struct perl_thread *thr
# define aTHX thr
# define dTHR dNOOP /* only backward compatibility */
# define dTHXa(a) pTHX = (struct perl_thread*)a
# else
# ifndef MULTIPLICITY
# define MULTIPLICITY
# endif
# define pTHX register PerlInterpreter *my_perl
# define aTHX my_perl
# define dTHXa(a) pTHX = (PerlInterpreter*)a
# endif
# define dTHX pTHX = PERL_GET_THX
# define pTHX_ pTHX,
# define aTHX_ aTHX,
# define pTHX_1 2
# define pTHX_2 3
# define pTHX_3 4
# define pTHX_4 5
#endif
#define STATIC static
#define CPERLscope(x) x
#define CPERLarg void
#define CPERLarg_
#define _CPERLarg
#define PERL_OBJECT_THIS
#define _PERL_OBJECT_THIS
#define PERL_OBJECT_THIS_
#define CALL_FPTR(fptr) (*fptr)
#endif /* PERL_OBJECT */
#define CALLRUNOPS CALL_FPTR(PL_runops)
#define CALLREGCOMP CALL_FPTR(PL_regcompp)
#define CALLREGEXEC CALL_FPTR(PL_regexecp)
#define CALLREG_INTUIT_START CALL_FPTR(PL_regint_start)
#define CALLREG_INTUIT_STRING CALL_FPTR(PL_regint_string)
#define CALLREGFREE CALL_FPTR(PL_regfree)
#ifdef PERL_FLEXIBLE_EXCEPTIONS
# define CALLPROTECT CALL_FPTR(PL_protect)
#endif
#define NOOP (void)0
#define dNOOP extern int Perl___notused
#ifndef pTHX
# define pTHX void
# define pTHX_
# define aTHX
# define aTHX_
# define dTHXa(a) dNOOP
# define dTHX dNOOP
# define pTHX_1 1
# define pTHX_2 2
# define pTHX_3 3
# define pTHX_4 4
#endif
#ifndef pTHXo
# define pTHXo pTHX
# define pTHXo_ pTHX_
# define aTHXo aTHX
# define aTHXo_ aTHX_
# define dTHXo dTHX
# define dTHXoa(x) dTHXa(x)
#endif
#ifndef pTHXx
# define pTHXx register PerlInterpreter *my_perl
# define pTHXx_ pTHXx,
# define aTHXx my_perl
# define aTHXx_ aTHXx,
# define dTHXx dTHX
#endif
#undef START_EXTERN_C
#undef END_EXTERN_C
#undef EXTERN_C
#ifdef __cplusplus
# define START_EXTERN_C extern "C" {
# define END_EXTERN_C }
# define EXTERN_C extern "C"
#else
# define START_EXTERN_C
# define END_EXTERN_C
# define EXTERN_C extern
#endif
#ifdef OP_IN_REGISTER
# ifdef __GNUC__
# define stringify_immed(s) #s
# define stringify(s) stringify_immed(s)
register struct op *Perl_op asm(stringify(OP_IN_REGISTER));
# endif
#endif
/*
* STMT_START { statements; } STMT_END;
* can be used as a single statement, as in
* if (x) STMT_START { ... } STMT_END; else ...
*
* Trying to select a version that gives no warnings...
*/
#if !(defined(STMT_START) && defined(STMT_END))
# if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(__cplusplus)
# define STMT_START (void)( /* gcc supports ``({ STATEMENTS; })'' */
# define STMT_END )
# else
/* Now which other defined()s do we need here ??? */
# if (VOIDFLAGS) && (defined(sun) || defined(__sun__))
# define STMT_START if (1)
# define STMT_END else (void)0
# else
# define STMT_START do
# define STMT_END while (0)
# endif
# endif
#endif
#define WITH_THX(s) STMT_START { dTHX; s; } STMT_END
#define WITH_THR(s) WITH_THX(s)
/*
* SOFT_CAST can be used for args to prototyped functions to retain some
* type checking; it only casts if the compiler does not know prototypes.
*/
#if defined(CAN_PROTOTYPE) && defined(DEBUGGING_COMPILE)
#define SOFT_CAST(type)
#else
#define SOFT_CAST(type) (type)
#endif
#ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
# define BYTEORDER 0x1234
#endif
/* Overall memory policy? */
#ifndef CONSERVATIVE
# define LIBERAL 1
#endif
#if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
#define ASCIIish
#else
#undef ASCIIish
#endif
/*
* The following contortions are brought to you on behalf of all the
* standards, semi-standards, de facto standards, not-so-de-facto standards
* of the world, as well as all the other botches anyone ever thought of.
* The basic theory is that if we work hard enough here, the rest of the
* code can be a lot prettier. Well, so much for theory. Sorry, Henry...
*/
/* define this once if either system, instead of cluttering up the src */
#if defined(MSDOS) || defined(atarist) || defined(WIN32)
#define DOSISH 1
#endif
#if defined(__STDC__) || defined(vax11c) || defined(_AIX) || defined(__stdc__) || defined(__cplusplus) || defined( EPOC)
# define STANDARD_C 1
#endif
#if defined(__cplusplus) || defined(WIN32) || defined(__sgi) || defined(OS2) || defined(__DGUX) || defined( EPOC) || defined(__QNX__)
# define DONT_DECLARE_STD 1
#endif
#if defined(HASVOLATILE) || defined(STANDARD_C)
# ifdef __cplusplus
# define VOL // to temporarily suppress warnings
# else
# define VOL volatile
# endif
#else
# define VOL
#endif
#define TAINT (PL_tainted = TRUE)
#define TAINT_NOT (PL_tainted = FALSE)
#define TAINT_IF(c) if (c) { PL_tainted = TRUE; }
#define TAINT_ENV() if (PL_tainting) { taint_env(); }
#define TAINT_PROPER(s) if (PL_tainting) { taint_proper(Nullch, s); }
/* XXX All process group stuff is handled in pp_sys.c. Should these
defines move there? If so, I could simplify this a lot. --AD 9/96.
*/
/* Process group stuff changed from traditional BSD to POSIX.
perlfunc.pod documents the traditional BSD-style syntax, so we'll
try to preserve that, if possible.
*/
#ifdef HAS_SETPGID
# define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
#else
# if defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
# define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
# else
# ifdef HAS_SETPGRP2 /* DG/UX */
# define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
# endif
# endif
#endif
#if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
# define HAS_SETPGRP /* Well, effectively it does . . . */
#endif
/* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
our life easier :-) so we'll try it.
*/
#ifdef HAS_GETPGID
# define BSD_GETPGRP(pid) getpgid((pid))
#else
# if defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
# define BSD_GETPGRP(pid) getpgrp((pid))
# else
# ifdef HAS_GETPGRP2 /* DG/UX */
# define BSD_GETPGRP(pid) getpgrp2((pid))
# endif
# endif
#endif
#if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
# define HAS_GETPGRP /* Well, effectively it does . . . */
#endif
/* These are not exact synonyms, since setpgrp() and getpgrp() may
have different behaviors, but perl.h used to define USE_BSDPGRP
(prior to 5.003_05) so some extension might depend on it.
*/
#if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
# ifndef USE_BSDPGRP
# define USE_BSDPGRP
# endif
#endif
/* HP-UX 10.X CMA (Common Multithreaded Architecure) insists that
pthread.h must be included before all other header files.
*/
#if (defined(USE_THREADS) || defined(USE_ITHREADS)) \
&& defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
# include <pthread.h>
#endif
#ifndef _TYPES_ /* If types.h defines this it's easy. */
# ifndef major /* Does everyone's types.h define this? */
# include <sys/types.h>
# endif
#endif
#ifdef __cplusplus
# ifndef I_STDARG
# define I_STDARG 1
# endif
#endif
#ifdef I_STDARG
# include <stdarg.h>
#else
# ifdef I_VARARGS
# include <varargs.h>
# endif
#endif
#ifdef USE_NEXT_CTYPE
#if NX_CURRENT_COMPILER_RELEASE >= 500
# include <bsd/ctypes.h>
#else
# if NX_CURRENT_COMPILER_RELEASE >= 400
# include <objc/NXCType.h>
# else /* NX_CURRENT_COMPILER_RELEASE < 400 */
# include <appkit/NXCType.h>
# endif /* NX_CURRENT_COMPILER_RELEASE >= 400 */
#endif /* NX_CURRENT_COMPILER_RELEASE >= 500 */
#else /* !USE_NEXT_CTYPE */
#include <ctype.h>
#endif /* USE_NEXT_CTYPE */
#ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
#undef METHOD
#endif
#ifdef I_LOCALE
# include <locale.h>
#endif
#if !defined(NO_LOCALE) && defined(HAS_SETLOCALE)
# define USE_LOCALE
# if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
&& defined(HAS_STRXFRM)
# define USE_LOCALE_COLLATE
# endif
# if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
# define USE_LOCALE_CTYPE
# endif
# if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
# define USE_LOCALE_NUMERIC
# endif
#endif /* !NO_LOCALE && HAS_SETLOCALE */
#include <setjmp.h>
#ifdef I_SYS_PARAM
# ifdef PARAM_NEEDS_TYPES
# include <sys/types.h>
# endif
# include <sys/param.h>
#endif
/* Use all the "standard" definitions? */
#if defined(STANDARD_C) && defined(I_STDLIB)
# include <stdlib.h>
#endif
/* If this causes problems, set i_unistd=undef in the hint file. */
#ifdef I_UNISTD
# include <unistd.h>
#endif
#ifdef PERL_MICRO /* Last chance to export Perl_my_swap */
# define MYSWAP
#endif
#if !defined(PERL_FOR_X2P) && !defined(WIN32)
# include "embed.h"
#endif
#define MEM_SIZE Size_t
#if defined(STANDARD_C) && defined(I_STDDEF)
# include <stddef.h>
# define STRUCT_OFFSET(s,m) offsetof(s,m)
#else
# define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
#endif
#if defined(I_STRING) || defined(__cplusplus)
# include <string.h>
#else
# include <strings.h>
#endif
/* This comes after <stdlib.h> so we don't try to change the standard
* library prototypes; we'll use our own in proto.h instead. */
#ifdef MYMALLOC
# ifdef PERL_POLLUTE_MALLOC
# ifndef PERL_EXTMALLOC_DEF
# define Perl_malloc malloc
# define Perl_calloc calloc
# define Perl_realloc realloc
# define Perl_mfree free
# endif
# else
# define EMBEDMYMALLOC /* for compatibility */
# endif
Malloc_t Perl_malloc (MEM_SIZE nbytes);
Malloc_t Perl_calloc (MEM_SIZE elements, MEM_SIZE size);
Malloc_t Perl_realloc (Malloc_t where, MEM_SIZE nbytes);
/* 'mfree' rather than 'free', since there is already a 'perl_free'
* that causes clashes with case-insensitive linkers */
Free_t Perl_mfree (Malloc_t where);
typedef struct perl_mstats perl_mstats_t;
# define safemalloc Perl_malloc
# define safecalloc Perl_calloc
# define saferealloc Perl_realloc
# define safefree Perl_mfree
#else /* MYMALLOC */
# define safemalloc safesysmalloc
# define safecalloc safesyscalloc
# define saferealloc safesysrealloc
# define safefree safesysfree
#endif /* MYMALLOC */
#if !defined(HAS_STRCHR) && defined(HAS_INDEX) && !defined(strchr)
#define strchr index
#define strrchr rindex
#endif
#ifdef I_MEMORY
# include <memory.h>
#endif
#ifdef HAS_MEMCPY
# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
# ifndef memcpy
extern char * memcpy (char*, char*, int);
# endif
# endif
#else
# ifndef memcpy
# ifdef HAS_BCOPY
# define memcpy(d,s,l) bcopy(s,d,l)
# else
# define memcpy(d,s,l) my_bcopy(s,d,l)
# endif
# endif
#endif /* HAS_MEMCPY */
#ifdef HAS_MEMSET
# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
# ifndef memset
extern char *memset (char*, int, int);
# endif
# endif
#else
# define memset(d,c,l) my_memset(d,c,l)
#endif /* HAS_MEMSET */
#if !defined(HAS_MEMMOVE) && !defined(memmove)
# if defined(HAS_BCOPY) && defined(HAS_SAFE_BCOPY)
# define memmove(d,s,l) bcopy(s,d,l)
# else
# if defined(HAS_MEMCPY) && defined(HAS_SAFE_MEMCPY)
# define memmove(d,s,l) memcpy(d,s,l)
# else
# define memmove(d,s,l) my_bcopy(s,d,l)
# endif
# endif
#endif
#if defined(mips) && defined(ultrix) && !defined(__STDC__)
# undef HAS_MEMCMP
#endif
#if defined(HAS_MEMCMP) && defined(HAS_SANE_MEMCMP)
# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
# ifndef memcmp
extern int memcmp (char*, char*, int);
# endif
# endif
# ifdef BUGGY_MSC
# pragma function(memcmp)
# endif
#else
# ifndef memcmp
# define memcmp my_memcmp
# endif
#endif /* HAS_MEMCMP && HAS_SANE_MEMCMP */
#ifndef memzero
# ifdef HAS_MEMSET
# define memzero(d,l) memset(d,0,l)
# else
# ifdef HAS_BZERO
# define memzero(d,l) bzero(d,l)
# else
# define memzero(d,l) my_bzero(d,l)
# endif
# endif
#endif
#ifndef memchr
# ifndef HAS_MEMCHR
# define memchr(s,c,n) ninstr((char*)(s), ((char*)(s)) + n, &(c), &(c) + 1)
# endif
#endif
#ifndef HAS_BCMP
# ifndef bcmp
# define bcmp(s1,s2,l) memcmp(s1,s2,l)
# endif
#endif /* !HAS_BCMP */
#ifdef I_NETINET_IN
# include <netinet/in.h>
#endif
#ifdef I_ARPA_INET
# include <arpa/inet.h>
#endif
#if defined(SF_APPEND) && defined(USE_SFIO) && defined(I_SFIO)
/* <sfio.h> defines SF_APPEND and <sys/stat.h> might define SF_APPEND
* (the neo-BSD seem to do this). */
# undef SF_APPEND
#endif
#ifdef I_SYS_STAT
# include <sys/stat.h>
#endif
/* The stat macros for Amdahl UTS, Unisoft System V/88 (and derivatives
like UTekV) are broken, sometimes giving false positives. Undefine
them here and let the code below set them to proper values.
The ghs macro stands for GreenHills Software C-1.8.5 which
is the C compiler for sysV88 and the various derivatives.
This header file bug is corrected in gcc-2.5.8 and later versions.
--Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
#if defined(uts) || (defined(m88k) && defined(ghs))
# undef S_ISDIR
# undef S_ISCHR
# undef S_ISBLK
# undef S_ISREG
# undef S_ISFIFO
# undef S_ISLNK
#endif
#ifdef I_TIME
# include <time.h>
#endif
#ifdef I_SYS_TIME
# ifdef I_SYS_TIME_KERNEL
# define KERNEL
# endif
# include <sys/time.h>
# ifdef I_SYS_TIME_KERNEL
# undef KERNEL
# endif
#endif
#if defined(HAS_TIMES) && defined(I_SYS_TIMES)
# include <sys/times.h>
#endif
#if defined(HAS_STRERROR) && (!defined(HAS_MKDIR) || !defined(HAS_RMDIR))
# undef HAS_STRERROR
#endif
#include <errno.h>
#if defined(WIN32) && (defined(PERL_OBJECT) || defined(PERL_IMPLICIT_SYS) || defined(PERL_CAPI))
# define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
#endif
#if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */
# include <sys/socket.h>
# if defined(USE_SOCKS) && defined(I_SOCKS)
# if !defined(INCLUDE_PROTOTYPES)
# define INCLUDE_PROTOTYPES /* for <socks.h> */
# define PERL_SOCKS_NEED_PROTOTYPES
# endif
# ifdef USE_THREADS
# define PERL_USE_THREADS /* store our value */
# undef USE_THREADS
# endif
# include <socks.h>
# ifdef USE_THREADS
# undef USE_THREADS /* socks.h does this on its own */
# endif
# ifdef PERL_USE_THREADS
# define USE_THREADS /* restore our value */
# undef PERL_USE_THREADS
# endif
# ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
# undef INCLUDE_PROTOTYPES
# undef PERL_SOCKS_NEED_PROTOTYPES
# endif
# ifdef USE_64_BIT_ALL
# define SOCKS_64BIT_BUG /* until proven otherwise */
# endif
# endif
# ifdef I_NETDB
# include <netdb.h>
# endif
# ifndef ENOTSOCK
# ifdef I_NET_ERRNO
# include <net/errno.h>
# endif
# endif
#endif
#ifdef SETERRNO
# undef SETERRNO /* SOCKS might have defined this */
#endif
#ifdef VMS
# define SETERRNO(errcode,vmserrcode) \
STMT_START { \
set_errno(errcode); \
set_vaxc_errno(vmserrcode); \
} STMT_END
#else
# define SETERRNO(errcode,vmserrcode) (errno = (errcode))
#endif
#ifdef USE_THREADS
# define ERRSV (thr->errsv)
# define DEFSV THREADSV(0)
# define SAVE_DEFSV save_threadsv(0)
#else
# define ERRSV GvSV(PL_errgv)
# define DEFSV GvSV(PL_defgv)
# define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
#endif /* USE_THREADS */
#define ERRHV GvHV(PL_errgv) /* XXX unused, here for compatibility */
#ifndef errno
extern int errno; /* ANSI allows errno to be an lvalue expr.
* For example in multithreaded environments
* something like this might happen:
* extern int *_errno(void);
* #define errno (*_errno()) */
#endif
#ifdef HAS_STRERROR
# ifdef VMS
char *strerror (int,...);
# else
#ifndef DONT_DECLARE_STD
char *strerror (int);
#endif
# endif
# ifndef Strerror
# define Strerror strerror
# endif
#else
# ifdef HAS_SYS_ERRLIST
extern int sys_nerr;
extern char *sys_errlist[];
# ifndef Strerror
# define Strerror(e) \
((e) < 0 || (e) >= sys_nerr ? "(unknown)" : sys_errlist[e])
# endif
# endif
#endif
#ifdef I_SYS_IOCTL
# ifndef _IOCTL_
# include <sys/ioctl.h>
# endif
#endif
#if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
# ifdef HAS_SOCKETPAIR
# undef HAS_SOCKETPAIR
# endif
# ifdef I_NDBM
# undef I_NDBM
# endif
#endif
#if INTSIZE == 2
# define htoni htons
# define ntohi ntohs
#else
# define htoni htonl
# define ntohi ntohl
#endif
/* Configure already sets Direntry_t */
#if defined(I_DIRENT)
# include <dirent.h>
/* NeXT needs dirent + sys/dir.h */
# if defined(I_SYS_DIR) && (defined(NeXT) || defined(__NeXT__))
# include <sys/dir.h>
# endif
#else
# ifdef I_SYS_NDIR
# include <sys/ndir.h>
# else
# ifdef I_SYS_DIR
# ifdef hp9000s500
# include <ndir.h> /* may be wrong in the future */
# else
# include <sys/dir.h>
# endif
# endif
# endif
#endif
#ifdef FPUTS_BOTCH
/* work around botch in SunOS 4.0.1 and 4.0.2 */
# ifndef fputs
# define fputs(sv,fp) fprintf(fp,"%s",sv)
# endif
#endif
/*
* The following gobbledygook brought to you on behalf of __STDC__.
* (I could just use #ifndef __STDC__, but this is more bulletproof
* in the face of half-implementations.)
*/
#ifdef I_SYSMODE
#include <sys/mode.h>
#endif
#ifndef S_IFMT
# ifdef _S_IFMT
# define S_IFMT _S_IFMT
# else
# define S_IFMT 0170000
# endif
#endif
#ifndef S_ISDIR
# define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
#endif
#ifndef S_ISCHR
# define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
#endif
#ifndef S_ISBLK
# ifdef S_IFBLK
# define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
# else
# define S_ISBLK(m) (0)
# endif
#endif
#ifndef S_ISREG
# define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
#endif
#ifndef S_ISFIFO
# ifdef S_IFIFO
# define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
# else
# define S_ISFIFO(m) (0)
# endif
#endif
#ifndef S_ISLNK
# ifdef _S_ISLNK
# define S_ISLNK(m) _S_ISLNK(m)
# else
# ifdef _S_IFLNK
# define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
# else
# ifdef S_IFLNK
# define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
# else
# define S_ISLNK(m) (0)
# endif
# endif
# endif
#endif
#ifndef S_ISSOCK
# ifdef _S_ISSOCK
# define S_ISSOCK(m) _S_ISSOCK(m)
# else
# ifdef _S_IFSOCK
# define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
# else
# ifdef S_IFSOCK
# define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
# else
# define S_ISSOCK(m) (0)
# endif
# endif
# endif
#endif
#ifndef S_IRUSR
# ifdef S_IREAD
# define S_IRUSR S_IREAD
# define S_IWUSR S_IWRITE
# define S_IXUSR S_IEXEC
# else
# define S_IRUSR 0400
# define S_IWUSR 0200
# define S_IXUSR 0100
# endif
#endif
#ifndef S_IRGRP
# ifdef S_IRUSR
# define S_IRGRP (S_IRUSR>>3)
# define S_IWGRP (S_IWUSR>>3)
# define S_IXGRP (S_IXUSR>>3)
# else
# define S_IRGRP 0040
# define S_IWGRP 0020
# define S_IXGRP 0010
# endif
#endif
#ifndef S_IROTH
# ifdef S_IRUSR
# define S_IROTH (S_IRUSR>>6)
# define S_IWOTH (S_IWUSR>>6)
# define S_IXOTH (S_IXUSR>>6)
# else
# define S_IROTH 0040
# define S_IWOTH 0020
# define S_IXOTH 0010
# endif
#endif
#ifndef S_ISUID
# define S_ISUID 04000
#endif
#ifndef S_ISGID
# define S_ISGID 02000
#endif
#ifndef S_IRWXU
# define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
#endif
#ifndef S_IRWXG
# define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
#endif
#ifndef S_IRWXO
# define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
#endif
#ifndef S_IREAD
# define S_IREAD S_IRUSR
#endif
#ifndef S_IWRITE
# define S_IWRITE S_IWUSR
#endif