#!/usr/bin/perl -w
-
-#
-# Generate the reentr.c and reentr.h,
-# and optionally also the relevant metaconfig units (-U option).
#
+# Regenerate (overwriting only if changed):
+#
+# reentr.h
+# reentr.c
+#
+# from information stored in the DATA section of this file.
+#
+# With the -U option, it also unconditionally regenerates the relevant
+# metaconfig units:
+#
+# d_${func}_r.U
+#
+# Also accepts the standard regen_lib -q and -v args.
+#
+# This script is normally invoked from regen.pl.
BEGIN {
# Get function prototypes
use strict;
use Getopt::Std;
my %opts;
-getopts('U', \%opts);
+getopts('Uv', \%opts);
my %map = (
V => "void",
# Example #3: S_CBI means type func_r(const char*, char*, int)
-safer_unlink 'reentr.h';
-die "reentr.h: $!" unless open(H, ">reentr.h");
-binmode H;
-select H;
+# safer_unlink 'reentr.h';
+my $h = safer_open("reentr.h-new");
+select $h;
print <<EOF;
/* -*- buffer-read-only: t -*-
*
* reentr.h
*
- * Copyright (C) 2002, 2003, 2005, 2006 by Larry Wall and others
+ * Copyright (C) 2002, 2003, 2005, 2006, 2007 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
#ifndef REENTR_H
#define REENTR_H
+/* If compiling for a threaded perl, we will macro-wrap the system/library
+ * interfaces (e.g. getpwent()) which have threaded versions
+ * (e.g. getpwent_r()), which will handle things correctly for
+ * the Perl interpreter, but otherwise (for XS) the wrapping does
+ * not take place. See L<perlxs/Thread-aware system interfaces>.
+ */
+
+#ifndef PERL_REENTR_API
+# if defined(PERL_CORE) || defined(PERL_EXT)
+# define PERL_REENTR_API 1
+# else
+# define PERL_REENTR_API 0
+# endif
+#endif
+
#ifdef USE_REENTRANT_API
/* Deprecations: some platforms have the said reentrant interfaces
* but they are declared obsolete and are not to be used. Often this
* means that the platform has threadsafed the interfaces (hopefully).
* All this is OS version dependent, so we are of course fooling ourselves.
- * If you know of more deprecations on some platforms, please add your own. */
+ * If you know of more deprecations on some platforms, please add your own
+ * (by editing reentr.pl, mind!) */
#ifdef __hpux
# undef HAS_CRYPT_R
* memzero out certain structures before calling the functions.
*/
#if defined(__OpenBSD__)
-# define REENTR_MEMZERO(a,b) memzero(a,b),
+# define REENTR_MEMZERO(a,b) memzero(a,b)
#else
-# define REENTR_MEMZERO(a,b)
+# define REENTR_MEMZERO(a,b) 0
#endif
#ifdef NETDB_R_OBSOLETE
# Prepare to continue writing the reentr.h.
-select H;
+select $h;
{
# Write out all the known prototype signatures.
EOF
pushssif $endif;
}
- elsif ($func =~ /^(drand48|gmtime|localtime|random|srandom)$/) {
+ elsif ($func =~ /^(drand48|random|srandom)$/) {
pushssif $ifdef;
push @struct, <<EOF;
$seent{$func} _${func}_struct;
push @size, <<EOF;
# if defined(HAS_SYSCONF) && defined($sc) && !defined(__GLIBC__)
PL_reentrant_buffer->$sz = sysconf($sc);
- if (PL_reentrant_buffer->$sz == -1)
+ if (PL_reentrant_buffer->$sz == (size_t) -1)
PL_reentrant_buffer->$sz = REENTRANTUSUALSIZE;
# else
# if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
push @wrap, $ifdef;
push @wrap, <<EOF;
+# if defined(PERL_REENTR_API) && (PERL_REENTR_API+0 == 1)
# undef $func
EOF
} split '', $b;
$w = ", $w" if length $v;
}
+
my $call = "${func}_r($v$w)";
# Must make OpenBSD happy
my $memzero = '';
if($p =~ /D$/ &&
($genfunc eq 'protoent' || $genfunc eq 'servent')) {
- $memzero = 'REENTR_MEMZERO(&PL_reentrant_buffer->_' . $genfunc . '_data, sizeof(PL_reentrant_buffer->_' . $genfunc . '_data))';
+ $memzero = 'REENTR_MEMZERO(&PL_reentrant_buffer->_' . $genfunc . '_data, sizeof(PL_reentrant_buffer->_' . $genfunc . '_data)),';
}
push @wrap, <<EOF;
# if !defined($func) && ${FUNC}_R_PROTO == REENTRANT_PROTO_$p
EOF
}
}
- push @wrap, <<EOF;
+ push @wrap, <<EOF; # !defined(xxx) && XXX_R_PROTO == REENTRANT_PROTO_Y_TS
# endif
EOF
}
+ push @wrap, <<EOF; # defined(PERL_REENTR_API) && (PERL_REENTR_API+0 == 1)
+# endif
+EOF
+
push @wrap, $endif, "\n";
}
}
/* ex: set ro: */
EOF
-close(H);
+safer_close($h);
+rename_if_different('reentr.h-new', 'reentr.h');
# Prepare to write the reentr.c.
-safer_unlink 'reentr.c';
-die "reentr.c: $!" unless open(C, ">reentr.c");
-binmode C;
-select C;
+# safer_unlink 'reentr.c';
+my $c = safer_open("reentr.c-new");
+select $c;
print <<EOF;
/* -*- buffer-read-only: t -*-
*
* reentr.c
*
- * Copyright (C) 2002, 2003, 2005, 2006 by Larry Wall and others
+ * Copyright (C) 2002, 2003, 2005, 2006, 2007 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
{
dTHX;
void *retptr = NULL;
+ va_list ap;
+#ifdef USE_REENTRANT_API
+ /* Easier to special case this here than in embed.pl. (Look at what it
+ generates for proto.h) */
+ PERL_ARGS_ASSERT_REENTRANT_RETRY;
+#endif
+ va_start(ap, f);
+ {
#ifdef USE_REENTRANT_API
# if defined(USE_HOSTENT_BUFFER) || defined(USE_GRENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PWENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
void *p0;
# if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
int anint;
# endif
- va_list ap;
-
- va_start(ap, f);
switch (PL_op->op_type) {
#ifdef USE_HOSTENT_BUFFER
/* Not known how to retry, so just fail. */
break;
}
-
- va_end(ap);
#else
PERL_UNUSED_ARG(f);
#endif
+ }
+ va_end(ap);
return retptr;
}
/* ex: set ro: */
EOF
+safer_close($c);
+rename_if_different('reentr.c-new', 'reentr.c');
+
__DATA__
asctime S |time |const struct tm|B_SB|B_SBI|I_SB|I_SBI
crypt CC |crypt |struct crypt_data|B_CCS|B_CCD|D=CRYPTD*
getservbyport IC|netdb |struct servent |I_ICSBWR|S_ICSBI|I_ICSD|D=struct servent_data*
getservent |netdb |struct servent |I_SBWR|I_SBI|S_SBI|I_SD|D=struct servent_data*
getspnam C |shadow |struct spwd |I_CSBWR|S_CSBI
-gmtime T |time |struct tm |S_TS|I_TS|T=const time_t*
-localtime T |time |struct tm |S_TS|I_TS|T=const time_t*
random |stdlib |struct random_data|I_iS|I_lS|I_St|i=int*|l=long*|t=int32_t*
readdir T |dirent |struct dirent |I_TSR|I_TS|T=DIR*
readdir64 T |dirent |struct dirent64|I_TSR|I_TS|T=DIR*
https://perl5.git.perl.org / perl5.git / blobdiff