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[perl5.git] / reentr.pl
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10bc17b6
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1#!/usr/bin/perl -w
2
3#
4# Generate the reentr.c and reentr.h,
5# and optionally also the relevant metaconfig units (-U option).
6#
7
8use strict;
9use Getopt::Std;
10my %opts;
11getopts('U', \%opts);
12
13my %map = (
14 V => "void",
15 A => "char*", # as an input argument
16 B => "char*", # as an output argument
17 C => "const char*", # as a read-only input argument
18 I => "int",
19 L => "long",
20 W => "size_t",
21 H => "FILE**",
22 E => "int*",
23 );
24
25# (See the definitions after __DATA__.)
26# In func|inc|type|... a "S" means "type*", and a "R" means "type**".
27# (The "types" are often structs, such as "struct passwd".)
28#
29# After the prototypes one can have |X=...|Y=... to define more types.
30# A commonly used extra type is to define D to be equal to "type_data",
31# for example "struct_hostent_data to" go with "struct hostent".
32#
33# Example #1: I_XSBWR means int func_r(X, type, char*, size_t, type**)
34# Example #2: S_SBIE means type func_r(type, char*, int, int*)
35# Example #3: S_CBI means type func_r(const char*, char*, int)
36
37
38die "reentr.h: $!" unless open(H, ">reentr.h");
39select H;
40print <<EOF;
41/*
42 * reentr.h
43 *
44 * Copyright (c) 1997-2002, Larry Wall
45 *
46 * You may distribute under the terms of either the GNU General Public
47 * License or the Artistic License, as specified in the README file.
48 *
49 * !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
50 * This file is built by reentrl.pl from data in reentr.pl.
51 */
52
53#ifndef REENTR_H
54#define REENTR_H
55
56#ifdef USE_REENTRANT_API
57
58/* Deprecations: some platforms have the said reentrant interfaces
59 * but they are declared obsolete and are not to be used. Often this
60 * means that the platform has threadsafed the interfaces (hopefully).
61 * All this is OS version dependent, so we are of course fooling ourselves.
62 * If you know of more deprecations on some platforms, please add your own. */
63
64#ifdef __hpux
65# undef HAS_CRYPT_R
66# undef HAS_DRAND48_R
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67# undef HAS_ENDGRENT_R
68# undef HAS_ENDPWENT_R
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69# undef HAS_GETGRENT_R
70# undef HAS_GETPWENT_R
71# undef HAS_SETLOCALE_R
72# undef HAS_SRAND48_R
73# undef HAS_STRERROR_R
74# define NETDB_R_OBSOLETE
75#endif
76
77#if defined(__osf__) && defined(__alpha) /* Tru64 aka Digital UNIX */
78# undef HAS_CRYPT_R
79# undef HAS_STRERROR_R
80# define NETDB_R_OBSOLETE
81#endif
82
83#ifdef NETDB_R_OBSOLETE
84# undef HAS_ENDHOSTENT_R
85# undef HAS_ENDNETENT_R
86# undef HAS_ENDPROTOENT_R
87# undef HAS_ENDSERVENT_R
88# undef HAS_GETHOSTBYADDR_R
89# undef HAS_GETHOSTBYNAME_R
90# undef HAS_GETHOSTENT_R
91# undef HAS_GETNETBYADDR_R
92# undef HAS_GETNETBYNAME_R
93# undef HAS_GETNETENT_R
94# undef HAS_GETPROTOBYNAME_R
95# undef HAS_GETPROTOBYNUMBER_R
96# undef HAS_GETPROTOENT_R
97# undef HAS_GETSERVBYNAME_R
98# undef HAS_GETSERVBYPORT_R
99# undef HAS_GETSERVENT_R
100# undef HAS_SETHOSTENT_R
101# undef HAS_SETNETENT_R
102# undef HAS_SETPROTOENT_R
103# undef HAS_SETSERVENT_R
104#endif
105
106#ifdef I_PWD
107# include <pwd.h>
108#endif
109#ifdef I_GRP
110# include <grp.h>
111#endif
112#ifdef I_NETDB
113# include <netdb.h>
114#endif
115#ifdef I_STDLIB
116# include <stdlib.h> /* drand48_data */
117#endif
118#ifdef I_CRYPT
119# ifdef I_CRYPT
120# include <crypt.h>
121# endif
122#endif
123#ifdef HAS_GETSPNAM_R
124# ifdef I_SHADOW
125# include <shadow.h>
126# endif
127#endif
128
129EOF
130
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131my %seenh; # the different prototypes signatures for this function
132my %seena; # the different prototypes signatures for this function in order
133my @seenf; # all the seen functions
134my %seenp; # the different prototype signatures for all functions
135my %seent; # the return type of this function
136my %seens; # the type of this function's "S"
137my %seend; # the type of this function's "D"
138my %seenu; # the length of the argument list of this function
139
140while (<DATA>) { # Read in the protypes.
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141 next if /^\s+$/;
142 chomp;
aa418cf1 143 my ($func, $hdr, $type, @p) = split(/\s*\|\s*/, $_, -1);
10bc17b6 144 my $u;
aa418cf1
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145 # Split off the real function name and the argument list.
146 ($func, $u) = split(' ', $func);
147 $seenu{$func} = defined $u ? length $u : 0;
148 my $FUNC = uc $func; # for output.
149 push @seenf, $func;
10bc17b6 150 my %m = %map;
aa418cf1
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151 if ($type) {
152 $m{S} = "$type*";
153 $m{R} = "$type**";
10bc17b6 154 }
aa418cf1
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155
156 # Set any special mapping variables (like X=x_t)
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157 if (@p) {
158 while ($p[-1] =~ /=/) {
159 my ($k, $v) = ($p[-1] =~ /^([A-Za-z])\s*=\s*(.*)/);
160 $m{$k} = $v;
161 pop @p;
162 }
163 }
aa418cf1
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164
165 # If given the -U option open up the metaconfig unit for this function.
166 if ($opts{U} && open(U, ">d_${func}_r.U")) {
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167 select U;
168 }
aa418cf1 169
d63eadf0 170 if ($opts{U}) {
aa418cf1
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171 # The metaconfig units needs prerequisite dependencies.
172 my $prereqs = '';
173 my $prereqh = '';
174 my $prereqsh = '';
175 if ($hdr ne 'stdio') { # There's no i_stdio.
176 $prereqs = "i_$hdr";
177 $prereqh = "$hdr.h";
178 $prereqsh = "\$$prereqs $prereqh";
179 }
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180 my @prereq = qw(Inlibc Protochk Hasproto i_systypes usethreads);
181 push @prereq, $prereqs;
182 my $hdrs = "\$i_systypes sys/types.h define stdio.h $prereqsh";
aa418cf1 183 if ($hdr eq 'time') {
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184 $hdrs .= " \$i_systime sys/time.h";
185 push @prereq, 'i_systime';
186 }
aa418cf1 187 # Output the metaconfig unit header.
d63eadf0 188 print <<EOF;
aa418cf1 189?RCS: \$Id: d_${func}_r.U,v $
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190?RCS:
191?RCS: Copyright (c) 2002 Jarkko Hietaniemi
192?RCS:
193?RCS: You may distribute under the terms of either the GNU General Public
194?RCS: License or the Artistic License, as specified in the README file.
195?RCS:
196?RCS: Generated by the reentr.pl from the Perl 5.8 distribution.
197?RCS:
aa418cf1 198?MAKE:d_${func}_r ${func}_r_proto: @prereq
10bc17b6 199?MAKE: -pick add \$@ %<
aa418cf1
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200?S:d_${func}_r:
201?S: This variable conditionally defines the HAS_${FUNC}_R symbol,
202?S: which indicates to the C program that the ${func}_r()
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203?S: routine is available.
204?S:.
aa418cf1
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205?S:${func}_r_proto:
206?S: This variable encodes the prototype of ${func}_r.
39183afa
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207?S: It is zero if d_${func}_r is undef, and one of the
208?S: REENTRANT_PROTO_T_ABC macros of reentr.h if d_${func}_r
209?S: is defined.
10bc17b6 210?S:.
aa418cf1
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211?C:HAS_${FUNC}_R:
212?C: This symbol, if defined, indicates that the ${func}_r routine
213?C: is available to ${func} re-entrantly.
10bc17b6 214?C:.
aa418cf1
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215?C:${FUNC}_R_PROTO:
216?C: This symbol encodes the prototype of ${func}_r.
39183afa
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217?C: It is zero if d_${func}_r is undef, and one of the
218?C: REENTRANT_PROTO_T_ABC macros of reentr.h if d_${func}_r
219?C: is defined.
10bc17b6 220?C:.
aa418cf1
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221?H:#\$d_${func}_r HAS_${FUNC}_R /**/
222?H:#define ${FUNC}_R_PROTO \$${func}_r_proto /**/
10bc17b6 223?H:.
aa418cf1
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224?T:try hdrs d_${func}_r_proto
225?LINT:set d_${func}_r
226?LINT:set ${func}_r_proto
227: see if ${func}_r exists
228set ${func}_r d_${func}_r
10bc17b6 229eval \$inlibc
aa418cf1 230case "\$d_${func}_r" in
10bc17b6 231"\$define")
d63eadf0 232EOF
d63eadf0
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233 print <<EOF;
234 hdrs="$hdrs"
aa418cf1
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235 case "\$d_${func}_r_proto:\$usethreads" in
236 ":define") d_${func}_r_proto=define
237 set d_${func}_r_proto ${func}_r \$hdrs
a48ec845
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238 eval \$hasproto ;;
239 *) ;;
240 esac
aa418cf1 241 case "\$d_${func}_r_proto" in
a48ec845 242 define)
10bc17b6 243EOF
d63eadf0
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244 }
245 for my $p (@p) {
246 my ($r, $a) = ($p =~ /^(.)_(.+)/);
247 my $v = join(", ", map { $m{$_} } split '', $a);
248 if ($opts{U}) {
249 print <<EOF ;
aa418cf1
JH
250 case "\$${func}_r_proto" in
251 ''|0) try='$m{$r} ${func}_r($v);'
252 ./protochk "extern \$try" \$hdrs && ${func}_r_proto=$p ;;
10bc17b6
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253 esac
254EOF
d63eadf0 255 }
aa418cf1
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256 $seenh{$func}->{$p}++;
257 push @{$seena{$func}}, $p;
d63eadf0 258 $seenp{$p}++;
aa418cf1
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259 $seent{$func} = $type;
260 $seens{$func} = $m{S};
261 $seend{$func} = $m{D};
d63eadf0
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262 }
263 if ($opts{U}) {
264 print <<EOF;
aa418cf1
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265 case "\$${func}_r_proto" in
266 ''|0) d_${func}_r=undef
267 ${func}_r_proto=0
268 echo "Disabling ${func}_r, cannot determine prototype." >&4 ;;
269 * ) case "\$${func}_r_proto" in
10bc17b6 270 REENTRANT_PROTO*) ;;
aa418cf1 271 *) ${func}_r_proto="REENTRANT_PROTO_\$${func}_r_proto" ;;
10bc17b6
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272 esac
273 echo "Prototype: \$try" ;;
274 esac
275 ;;
c18e646a 276 *) case "\$usethreads" in
aa418cf1 277 define) echo "${func}_r has no prototype, not using it." >&4 ;;
c18e646a 278 esac
aa418cf1
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279 d_${func}_r=undef
280 ${func}_r_proto=0
c18e646a 281 ;;
a48ec845
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282 esac
283 ;;
aa418cf1 284*) ${func}_r_proto=0
10bc17b6
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285 ;;
286esac
287
288EOF
289 close(U);
290 }
291}
292
293close DATA;
294
aa418cf1
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295# Prepare to continue writing the reentr.h.
296
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297select H;
298
299{
aa418cf1 300 # Write out all the known prototype signatures.
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301 my $i = 1;
302 for my $p (sort keys %seenp) {
303 print "#define REENTRANT_PROTO_${p} ${i}\n";
304 $i++;
305 }
306}
307
aa418cf1
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308my @struct; # REENTR struct members
309my @size; # struct member buffer size initialization code
310my @init; # struct member buffer initialization (malloc) code
311my @free; # struct member buffer release (free) code
312my @wrap; # the wrapper (foo(a) -> foo_r(a,...)) cpp code
313my @define; # defines for optional features
314
10bc17b6 315sub ifprotomatch {
aa418cf1
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316 my $FUNC = shift;
317 join " || ", map { "${FUNC}_R_PROTO == REENTRANT_PROTO_$_" } @_;
10bc17b6
JH
318}
319
10bc17b6
JH
320sub pushssif {
321 push @struct, @_;
322 push @size, @_;
323 push @init, @_;
324 push @free, @_;
325}
326
327sub pushinitfree {
aa418cf1 328 my $func = shift;
10bc17b6 329 push @init, <<EOF;
aa418cf1 330 New(31338, PL_reentrant_buffer->_${func}_buffer, PL_reentrant_buffer->_${func}_size, char);
10bc17b6
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331EOF
332 push @free, <<EOF;
aa418cf1 333 Safefree(PL_reentrant_buffer->_${func}_buffer);
10bc17b6
JH
334EOF
335}
336
337sub define {
338 my ($n, $p, @F) = @_;
339 my @H;
340 my $H = uc $F[0];
341 push @define, <<EOF;
342/* The @F using \L$n? */
343
344EOF
aa418cf1
JH
345 my $GENFUNC;
346 for my $func (@F) {
347 my $FUNC = uc $func;
348 my $HAS = "${FUNC}_R_HAS_$n";
349 push @H, $HAS;
350 my @h = grep { /$p/ } @{$seena{$func}};
351 unless (defined $GENFUNC) {
352 $GENFUNC = $FUNC;
353 $GENFUNC =~ s/^GET//;
f7937171 354 }
10bc17b6 355 if (@h) {
aa418cf1 356 push @define, "#if defined(HAS_${FUNC}_R) && (" . join(" || ", map { "${FUNC}_R_PROTO == REENTRANT_PROTO_$_" } @h) . ")\n";
10bc17b6
JH
357
358 push @define, <<EOF;
aa418cf1 359# define $HAS
10bc17b6 360#else
aa418cf1 361# undef $HAS
10bc17b6
JH
362#endif
363EOF
364 }
365 }
366 push @define, <<EOF;
367
368/* Any of the @F using \L$n? */
369
370EOF
371 push @define, "#if (" . join(" || ", map { "defined($_)" } @H) . ")\n";
372 push @define, <<EOF;
aa418cf1 373# define USE_${GENFUNC}_$n
10bc17b6 374#else
aa418cf1 375# undef USE_${GENFUNC}_$n
10bc17b6
JH
376#endif
377
378EOF
379}
380
edd309b7
JH
381define('BUFFER', 'B',
382 qw(getgrent getgrgid getgrnam));
383
10bc17b6
JH
384define('PTR', 'R',
385 qw(getgrent getgrgid getgrnam));
386define('PTR', 'R',
387 qw(getpwent getpwnam getpwuid));
388define('PTR', 'R',
389 qw(getspent getspnam));
390
391define('FPTR', 'H',
f7937171 392 qw(getgrent getgrgid getgrnam setgrent endgrent));
10bc17b6 393define('FPTR', 'H',
f7937171 394 qw(getpwent getpwnam getpwuid setpwent endpwent));
10bc17b6 395
edd309b7
JH
396define('BUFFER', 'B',
397 qw(getpwent getpwgid getpwnam));
398
10bc17b6
JH
399define('PTR', 'R',
400 qw(gethostent gethostbyaddr gethostbyname));
401define('PTR', 'R',
402 qw(getnetent getnetbyaddr getnetbyname));
403define('PTR', 'R',
404 qw(getprotoent getprotobyname getprotobynumber));
405define('PTR', 'R',
406 qw(getservent getservbyname getservbyport));
407
edd309b7
JH
408define('BUFFER', 'B',
409 qw(gethostent gethostbyaddr gethostbyname));
410define('BUFFER', 'B',
411 qw(getnetent getnetbyaddr getnetbyname));
412define('BUFFER', 'B',
413 qw(getprotoent getprotobyname getprotobynumber));
414define('BUFFER', 'B',
415 qw(getservent getservbyname getservbyport));
416
10bc17b6
JH
417define('ERRNO', 'E',
418 qw(gethostent gethostbyaddr gethostbyname));
419define('ERRNO', 'E',
420 qw(getnetent getnetbyaddr getnetbyname));
421
aa418cf1
JH
422# The following loop accumulates the "ssif" (struct, size, init, free)
423# sections that declare the struct members (in reentr.h), and the buffer
424# size initialization, buffer initialization (malloc), and buffer
425# release (free) code (in reentr.c).
426#
427# The loop also contains a lot of intrinsic logic about groups of
428# functions (since functions of certain kind operate the same way).
429
430for my $func (@seenf) {
431 my $FUNC = uc $func;
432 my $ifdef = "#ifdef HAS_${FUNC}_R\n";
433 my $endif = "#endif /* HAS_${FUNC}_R */\n";
434 if (exists $seena{$func}) {
435 my @p = @{$seena{$func}};
436 if ($func =~ /^(asctime|ctime|getlogin|setlocale|strerror|ttyname)$/) {
10bc17b6
JH
437 pushssif $ifdef;
438 push @struct, <<EOF;
aa418cf1
JH
439 char* _${func}_buffer;
440 size_t _${func}_size;
10bc17b6
JH
441EOF
442 push @size, <<EOF;
aa418cf1 443 PL_reentrant_buffer->_${func}_size = REENTRANTSMALLSIZE;
10bc17b6 444EOF
aa418cf1 445 pushinitfree $func;
10bc17b6
JH
446 pushssif $endif;
447 }
aa418cf1 448 elsif ($func =~ /^(crypt)$/) {
10bc17b6
JH
449 pushssif $ifdef;
450 push @struct, <<EOF;
b430fd04 451#if CRYPT_R_PROTO == REENTRANT_PROTO_B_CCD
aa418cf1 452 $seend{$func} _${func}_data;
b430fd04 453#else
aa418cf1 454 $seent{$func} _${func}_struct;
b430fd04 455#endif
10bc17b6 456EOF
b430fd04 457 push @init, <<EOF;
10bc17b6 458#ifdef __GLIBC__
aa418cf1 459 PL_reentrant_buffer->_${func}_struct.initialized = 0;
1b6e0668
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460 /* work around glibc-2.2.5 bug */
461 PL_reentrant_buffer->_${func}_struct.current_saltbits = 0;
10bc17b6
JH
462#endif
463EOF
b430fd04
JH
464 pushssif $endif;
465 }
aa418cf1 466 elsif ($func =~ /^(drand48|gmtime|localtime|random)$/) {
b430fd04
JH
467 pushssif $ifdef;
468 push @struct, <<EOF;
aa418cf1 469 $seent{$func} _${func}_struct;
b430fd04 470EOF
10bc17b6
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471 if ($1 eq 'drand48') {
472 push @struct, <<EOF;
aa418cf1 473 double _${func}_double;
10bc17b6
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474EOF
475 }
476 pushssif $endif;
477 }
aa418cf1 478 elsif ($func =~ /^(getgrnam|getpwnam|getspnam)$/) {
10bc17b6 479 pushssif $ifdef;
aa418cf1
JH
480 # 'genfunc' can be read either as 'generic' or 'genre',
481 # it represents a group of functions.
482 my $genfunc = $func;
483 $genfunc =~ s/nam/ent/g;
484 $genfunc =~ s/^get//;
485 my $GENFUNC = uc $genfunc;
10bc17b6 486 push @struct, <<EOF;
aa418cf1
JH
487 $seent{$func} _${genfunc}_struct;
488 char* _${genfunc}_buffer;
489 size_t _${genfunc}_size;
10bc17b6
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490EOF
491 push @struct, <<EOF;
aa418cf1
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492# ifdef USE_${GENFUNC}_PTR
493 $seent{$func}* _${genfunc}_ptr;
10bc17b6
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494# endif
495EOF
aa418cf1 496 if ($genfunc eq 'getspent') {
10bc17b6 497 push @size, <<EOF;
aa418cf1 498 PL_reentrant_buffer->_${genfunc}_size = 1024;
10bc17b6
JH
499EOF
500 } else {
501 push @struct, <<EOF;
aa418cf1
JH
502# ifdef USE_${GENFUNC}_FPTR
503 FILE* _${genfunc}_fptr;
10bc17b6
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504# endif
505EOF
506 push @init, <<EOF;
aa418cf1
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507# ifdef USE_${GENFUNC}_FPTR
508 PL_reentrant_buffer->_${genfunc}_fptr = NULL;
10bc17b6
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509# endif
510EOF
aa418cf1 511 my $sc = $genfunc eq 'getgrent' ?
10bc17b6 512 '_SC_GETGR_R_SIZE_MAX' : '_SC_GETPW_R_SIZE_MAX';
aa418cf1 513 my $sz = $genfunc eq 'getgrent' ?
f7937171 514 '_grent_size' : '_pwent_size';
10bc17b6
JH
515 push @size, <<EOF;
516# if defined(HAS_SYSCONF) && defined($sc) && !defined(__GLIBC__)
aa418cf1 517 PL_reentrant_buffer->_${genfunc}_size = sysconf($sc);
e3410746
SR
518 if (PL_reentrant_buffer->$sz == -1)
519 PL_reentrant_buffer->$sz = REENTRANTUSUALSIZE;
10bc17b6
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520# else
521# if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
aa418cf1 522 PL_reentrant_buffer->_${genfunc}_size = SIABUFSIZ;
10bc17b6
JH
523# else
524# ifdef __sgi
aa418cf1 525 PL_reentrant_buffer->_${genfunc}_size = BUFSIZ;
10bc17b6 526# else
aa418cf1 527 PL_reentrant_buffer->_${genfunc}_size = REENTRANTUSUALSIZE;
10bc17b6
JH
528# endif
529# endif
530# endif
531EOF
532 }
aa418cf1 533 pushinitfree $genfunc;
10bc17b6
JH
534 pushssif $endif;
535 }
aa418cf1 536 elsif ($func =~ /^(gethostbyname|getnetbyname|getservbyname|getprotobyname)$/) {
10bc17b6 537 pushssif $ifdef;
aa418cf1
JH
538 my $genfunc = $func;
539 $genfunc =~ s/byname/ent/;
540 $genfunc =~ s/^get//;
541 my $GENFUNC = uc $genfunc;
542 my $D = ifprotomatch($FUNC, grep {/D/} @p);
543 my $d = $seend{$func};
31ee0cb7 544 $d =~ s/\*$//; # snip: we need need the base type.
10bc17b6 545 push @struct, <<EOF;
aa418cf1 546 $seent{$func} _${genfunc}_struct;
10bc17b6 547# if $D
aa418cf1 548 $d _${genfunc}_data;
10bc17b6 549# else
aa418cf1
JH
550 char* _${genfunc}_buffer;
551 size_t _${genfunc}_size;
10bc17b6 552# endif
aa418cf1
JH
553# ifdef USE_${GENFUNC}_PTR
554 $seent{$func}* _${genfunc}_ptr;
10bc17b6
JH
555# endif
556EOF
557 push @struct, <<EOF;
aa418cf1
JH
558# ifdef USE_${GENFUNC}_ERRNO
559 int _${genfunc}_errno;
10bc17b6
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560# endif
561EOF
562 push @size, <<EOF;
563#if !($D)
aa418cf1 564 PL_reentrant_buffer->_${genfunc}_size = REENTRANTUSUALSIZE;
10bc17b6
JH
565#endif
566EOF
567 push @init, <<EOF;
568#if !($D)
aa418cf1 569 New(31338, PL_reentrant_buffer->_${genfunc}_buffer, PL_reentrant_buffer->_${genfunc}_size, char);
10bc17b6
JH
570#endif
571EOF
572 push @free, <<EOF;
573#if !($D)
aa418cf1 574 Safefree(PL_reentrant_buffer->_${genfunc}_buffer);
10bc17b6
JH
575#endif
576EOF
577 pushssif $endif;
578 }
aa418cf1 579 elsif ($func =~ /^(readdir|readdir64)$/) {
10bc17b6 580 pushssif $ifdef;
aa418cf1 581 my $R = ifprotomatch($FUNC, grep {/R/} @p);
10bc17b6 582 push @struct, <<EOF;
aa418cf1
JH
583 $seent{$func}* _${func}_struct;
584 size_t _${func}_size;
10bc17b6 585# if $R
aa418cf1 586 $seent{$func}* _${func}_ptr;
10bc17b6
JH
587# endif
588EOF
589 push @size, <<EOF;
590 /* This is the size Solaris recommends.
591 * (though we go static, should use pathconf() instead) */
aa418cf1 592 PL_reentrant_buffer->_${func}_size = sizeof($seent{$func}) + MAXPATHLEN + 1;
10bc17b6
JH
593EOF
594 push @init, <<EOF;
aa418cf1 595 PL_reentrant_buffer->_${func}_struct = ($seent{$func}*)safemalloc(PL_reentrant_buffer->_${func}_size);
10bc17b6
JH
596EOF
597 push @free, <<EOF;
aa418cf1 598 Safefree(PL_reentrant_buffer->_${func}_struct);
10bc17b6
JH
599EOF
600 pushssif $endif;
601 }
602
603 push @wrap, $ifdef;
604
10bc17b6 605 push @wrap, <<EOF;
aa418cf1 606# undef $func
10bc17b6 607EOF
aa418cf1
JH
608
609 # Write out what we have learned.
610
10bc17b6 611 my @v = 'a'..'z';
aa418cf1 612 my $v = join(", ", @v[0..$seenu{$func}-1]);
10bc17b6
JH
613 for my $p (@p) {
614 my ($r, $a) = split '_', $p;
615 my $test = $r eq 'I' ? ' == 0' : '';
616 my $true = 1;
aa418cf1
JH
617 my $genfunc = $func;
618 if ($genfunc =~ /^(?:get|set|end)(pw|gr|host|net|proto|serv|sp)/) {
619 $genfunc = "${1}ent";
620 } elsif ($genfunc eq 'srand48') {
621 $genfunc = "drand48";
10bc17b6
JH
622 }
623 my $b = $a;
624 my $w = '';
aa418cf1 625 substr($b, 0, $seenu{$func}) = '';
10bc17b6 626 if ($b =~ /R/) {
aa418cf1
JH
627 $true = "PL_reentrant_buffer->_${genfunc}_ptr";
628 } elsif ($b =~ /T/ && $func eq 'drand48') {
629 $true = "PL_reentrant_buffer->_${genfunc}_double";
10bc17b6 630 } elsif ($b =~ /S/) {
aa418cf1
JH
631 if ($func =~ /^readdir/) {
632 $true = "PL_reentrant_buffer->_${genfunc}_struct";
10bc17b6 633 } else {
aa418cf1 634 $true = "&PL_reentrant_buffer->_${genfunc}_struct";
10bc17b6
JH
635 }
636 } elsif ($b =~ /B/) {
aa418cf1 637 $true = "PL_reentrant_buffer->_${genfunc}_buffer";
10bc17b6
JH
638 }
639 if (length $b) {
640 $w = join ", ",
641 map {
642 $_ eq 'R' ?
aa418cf1 643 "&PL_reentrant_buffer->_${genfunc}_ptr" :
10bc17b6 644 $_ eq 'E' ?
aa418cf1 645 "&PL_reentrant_buffer->_${genfunc}_errno" :
10bc17b6 646 $_ eq 'B' ?
aa418cf1 647 "PL_reentrant_buffer->_${genfunc}_buffer" :
10bc17b6 648 $_ =~ /^[WI]$/ ?
aa418cf1 649 "PL_reentrant_buffer->_${genfunc}_size" :
10bc17b6 650 $_ eq 'H' ?
aa418cf1 651 "&PL_reentrant_buffer->_${genfunc}_fptr" :
10bc17b6 652 $_ eq 'D' ?
aa418cf1 653 "&PL_reentrant_buffer->_${genfunc}_data" :
10bc17b6 654 $_ eq 'S' ?
aa418cf1
JH
655 ($func =~ /^readdir/ ?
656 "PL_reentrant_buffer->_${genfunc}_struct" :
657 "&PL_reentrant_buffer->_${genfunc}_struct" ) :
658 $_ eq 'T' && $func eq 'drand48' ?
659 "&PL_reentrant_buffer->_${genfunc}_double" :
10bc17b6
JH
660 $_
661 } split '', $b;
662 $w = ", $w" if length $v;
663 }
aa418cf1 664 my $call = "${func}_r($v$w)";
10bc17b6
JH
665 $call = "((errno = $call))" if $r eq 'I';
666 push @wrap, <<EOF;
aa418cf1 667# if !defined($func) && ${FUNC}_R_PROTO == REENTRANT_PROTO_$p
10bc17b6
JH
668EOF
669 if ($r eq 'V' || $r eq 'B') {
670 push @wrap, <<EOF;
aa418cf1 671# define $func($v) $call
10bc17b6
JH
672EOF
673 } else {
aa418cf1 674 if ($func =~ /^get/) {
edd309b7
JH
675 my $rv = $v ? ", $v" : "";
676 push @wrap, <<EOF;
aa418cf1 677# define $func($v) ($call$test ? $true : (errno == ERANGE ? Perl_reentrant_retry("$func"$rv) : 0))
10bc17b6 678EOF
edd309b7
JH
679 } else {
680 push @wrap, <<EOF;
aa418cf1 681# define $func($v) ($call$test ? $true : 0)
edd309b7
JH
682EOF
683 }
10bc17b6
JH
684 }
685 push @wrap, <<EOF;
686# endif
687EOF
688 }
689
690 push @wrap, $endif, "\n";
691 }
692}
693
694local $" = '';
695
696print <<EOF;
697
698/* Defines for indicating which special features are supported. */
699
700@define
701typedef struct {
702@struct
aa418cf1 703 int dummy; /* cannot have empty structs */
10bc17b6
JH
704} REENTR;
705
706/* The wrappers. */
707
708@wrap
709#endif /* USE_REENTRANT_API */
710
711#endif
712
713EOF
714
715close(H);
716
aa418cf1
JH
717# Prepare to write the reentr.c.
718
10bc17b6
JH
719die "reentr.c: $!" unless open(C, ">reentr.c");
720select C;
721print <<EOF;
722/*
723 * reentr.c
724 *
725 * Copyright (c) 1997-2002, Larry Wall
726 *
727 * You may distribute under the terms of either the GNU General Public
728 * License or the Artistic License, as specified in the README file.
729 *
730 * !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
731 * This file is built by reentrl.pl from data in reentr.pl.
732 *
733 * "Saruman," I said, standing away from him, "only one hand at a time can
734 * wield the One, and you know that well, so do not trouble to say we!"
735 *
736 */
737
738#include "EXTERN.h"
739#define PERL_IN_REENTR_C
740#include "perl.h"
741#include "reentr.h"
742
743void
744Perl_reentrant_size(pTHX) {
745#ifdef USE_REENTRANT_API
8695fa85
SR
746#define REENTRANTSMALLSIZE 256 /* Make something up. */
747#define REENTRANTUSUALSIZE 4096 /* Make something up. */
10bc17b6
JH
748@size
749#endif /* USE_REENTRANT_API */
750}
751
752void
753Perl_reentrant_init(pTHX) {
754#ifdef USE_REENTRANT_API
755 New(31337, PL_reentrant_buffer, 1, REENTR);
756 Perl_reentrant_size(aTHX);
757@init
758#endif /* USE_REENTRANT_API */
759}
760
761void
762Perl_reentrant_free(pTHX) {
763#ifdef USE_REENTRANT_API
764@free
765 Safefree(PL_reentrant_buffer);
766#endif /* USE_REENTRANT_API */
767}
768
edd309b7
JH
769void*
770Perl_reentrant_retry(const char *f, ...)
771{
772 dTHX;
773 void *retptr = NULL;
774#ifdef USE_REENTRANT_API
f7937171 775# if defined(USE_HOSTENT_BUFFER) || defined(USE_GRENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PWENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SRVENT_BUFFER)
e3410746
SR
776 void *p0;
777# endif
f7937171 778# if defined(USE_SERVENT_BUFFER)
e3410746
SR
779 void *p1;
780# endif
f7937171 781# if defined(USE_HOSTENT_BUFFER)
edd309b7 782 size_t asize;
e3410746 783# endif
f7937171 784# if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
edd309b7 785 int anint;
e3410746 786# endif
edd309b7
JH
787 va_list ap;
788
789 va_start(ap, f);
790
edd309b7 791 switch (PL_op->op_type) {
f7937171 792#ifdef USE_HOSTENT_BUFFER
edd309b7
JH
793 case OP_GHBYADDR:
794 case OP_GHBYNAME:
795 case OP_GHOSTENT:
796 {
af685957
JH
797#ifdef PERL_REENTRANT_MAXSIZE
798 if (PL_reentrant_buffer->_hostent_size <=
799 PERL_REENTRANT_MAXSIZE / 2)
800#endif
801 {
f7937171
JH
802 PL_reentrant_buffer->_hostent_size *= 2;
803 Renew(PL_reentrant_buffer->_hostent_buffer,
804 PL_reentrant_buffer->_hostent_size, char);
edd309b7
JH
805 switch (PL_op->op_type) {
806 case OP_GHBYADDR:
807 p0 = va_arg(ap, void *);
808 asize = va_arg(ap, size_t);
809 anint = va_arg(ap, int);
810 retptr = gethostbyaddr(p0, asize, anint); break;
811 case OP_GHBYNAME:
812 p0 = va_arg(ap, void *);
813 retptr = gethostbyname(p0); break;
814 case OP_GHOSTENT:
815 retptr = gethostent(); break;
816 default:
817 break;
818 }
819 }
820 }
821 break;
822#endif
f7937171 823#ifdef USE_GRENT_BUFFER
edd309b7
JH
824 case OP_GGRNAM:
825 case OP_GGRGID:
826 case OP_GGRENT:
827 {
af685957
JH
828#ifdef PERL_REENTRANT_MAXSIZE
829 if (PL_reentrant_buffer->_grent_size <=
830 PERL_REENTRANT_MAXSIZE / 2)
831#endif
832 {
edd309b7 833 Gid_t gid;
f7937171
JH
834 PL_reentrant_buffer->_grent_size *= 2;
835 Renew(PL_reentrant_buffer->_grent_buffer,
836 PL_reentrant_buffer->_grent_size, char);
edd309b7
JH
837 switch (PL_op->op_type) {
838 case OP_GGRNAM:
839 p0 = va_arg(ap, void *);
840 retptr = getgrnam(p0); break;
841 case OP_GGRGID:
842 gid = va_arg(ap, Gid_t);
843 retptr = getgrgid(gid); break;
844 case OP_GGRENT:
845 retptr = getgrent(); break;
846 default:
847 break;
848 }
849 }
850 }
851 break;
852#endif
f7937171 853#ifdef USE_NETENT_BUFFER
edd309b7
JH
854 case OP_GNBYADDR:
855 case OP_GNBYNAME:
856 case OP_GNETENT:
857 {
af685957
JH
858#ifdef PERL_REENTRANT_MAXSIZE
859 if (PL_reentrant_buffer->_netent_size <=
860 PERL_REENTRANT_MAXSIZE / 2)
861#endif
862 {
edd309b7 863 Netdb_net_t net;
f7937171
JH
864 PL_reentrant_buffer->_netent_size *= 2;
865 Renew(PL_reentrant_buffer->_netent_buffer,
866 PL_reentrant_buffer->_netent_size, char);
edd309b7
JH
867 switch (PL_op->op_type) {
868 case OP_GNBYADDR:
869 net = va_arg(ap, Netdb_net_t);
870 anint = va_arg(ap, int);
871 retptr = getnetbyaddr(net, anint); break;
872 case OP_GNBYNAME:
873 p0 = va_arg(ap, void *);
874 retptr = getnetbyname(p0); break;
875 case OP_GNETENT:
876 retptr = getnetent(); break;
877 default:
878 break;
879 }
880 }
b5379b0d 881 SETERRNO(ERANGE, LIB_INVARG);
edd309b7
JH
882 }
883 break;
884#endif
f7937171 885#ifdef USE_PWENT_BUFFER
edd309b7
JH
886 case OP_GPWNAM:
887 case OP_GPWUID:
888 case OP_GPWENT:
889 {
af685957
JH
890#ifdef PERL_REENTRANT_MAXSIZE
891 if (PL_reentrant_buffer->_pwent_size <=
892 PERL_REENTRANT_MAXSIZE / 2)
893#endif
894 {
edd309b7 895 Uid_t uid;
f7937171
JH
896 PL_reentrant_buffer->_pwent_size *= 2;
897 Renew(PL_reentrant_buffer->_pwent_buffer,
898 PL_reentrant_buffer->_pwent_size, char);
edd309b7
JH
899 switch (PL_op->op_type) {
900 case OP_GPWNAM:
901 p0 = va_arg(ap, void *);
902 retptr = getpwnam(p0); break;
903 case OP_GPWUID:
904 uid = va_arg(ap, Uid_t);
905 retptr = getpwuid(uid); break;
906 case OP_GPWENT:
907 retptr = getpwent(); break;
908 default:
909 break;
910 }
911 }
b5379b0d 912 SETERRNO(ERANGE, LIB_INVARG);
edd309b7
JH
913 }
914 break;
915#endif
f7937171 916#ifdef USE_PROTOENT_BUFFER
edd309b7
JH
917 case OP_GPBYNAME:
918 case OP_GPBYNUMBER:
919 case OP_GPROTOENT:
920 {
af685957
JH
921#ifdef PERL_REENTRANT_MAXSIZE
922 if (PL_reentrant_buffer->_protoent_size <=
923 PERL_REENTRANT_MAXSIZE / 2)
924#endif
925 {
f7937171
JH
926 PL_reentrant_buffer->_protoent_size *= 2;
927 Renew(PL_reentrant_buffer->_protoent_buffer,
928 PL_reentrant_buffer->_protoent_size, char);
edd309b7
JH
929 switch (PL_op->op_type) {
930 case OP_GPBYNAME:
931 p0 = va_arg(ap, void *);
932 retptr = getprotobyname(p0); break;
933 case OP_GPBYNUMBER:
934 anint = va_arg(ap, int);
935 retptr = getprotobynumber(anint); break;
936 case OP_GPROTOENT:
937 retptr = getprotoent(); break;
938 default:
939 break;
940 }
941 }
b5379b0d 942 SETERRNO(ERANGE, LIB_INVARG);
edd309b7
JH
943 }
944 break;
945#endif
f7937171 946#ifdef USE_SERVENT_BUFFER
edd309b7
JH
947 case OP_GSBYNAME:
948 case OP_GSBYPORT:
949 case OP_GSERVENT:
950 {
af685957
JH
951#ifdef PERL_REENTRANT_MAXSIZE
952 if (PL_reentrant_buffer->_servent_size <=
953 PERL_REENTRANT_MAXSIZE / 2)
954#endif
955 {
f7937171
JH
956 PL_reentrant_buffer->_servent_size *= 2;
957 Renew(PL_reentrant_buffer->_servent_buffer,
958 PL_reentrant_buffer->_servent_size, char);
edd309b7
JH
959 switch (PL_op->op_type) {
960 case OP_GSBYNAME:
961 p0 = va_arg(ap, void *);
962 p1 = va_arg(ap, void *);
963 retptr = getservbyname(p0, p1); break;
964 case OP_GSBYPORT:
965 anint = va_arg(ap, int);
966 p0 = va_arg(ap, void *);
967 retptr = getservbyport(anint, p0); break;
968 case OP_GSERVENT:
969 retptr = getservent(); break;
970 default:
971 break;
972 }
973 }
b5379b0d 974 SETERRNO(ERANGE, LIB_INVARG);
edd309b7
JH
975 }
976 break;
977#endif
978 default:
979 /* Not known how to retry, so just fail. */
980 break;
981 }
982
983 va_end(ap);
984#endif
985 return retptr;
986}
987
10bc17b6
JH
988EOF
989
990__DATA__
991asctime S |time |const struct tm|B_SB|B_SBI|I_SB|I_SBI
b430fd04 992crypt CC |crypt |struct crypt_data|B_CCS|B_CCD|D=CRYPTD*
10bc17b6
JH
993ctermid B |stdio | |B_B
994ctime S |time |const time_t |B_SB|B_SBI|I_SB|I_SBI
995drand48 |stdlib |struct drand48_data |I_ST|T=double*
996endgrent |grp | |I_H|V_H
31ee0cb7
JH
997endhostent |netdb | |I_D|V_D|D=struct hostent_data*
998endnetent |netdb | |I_D|V_D|D=struct netent_data*
999endprotoent |netdb | |I_D|V_D|D=struct protoent_data*
10bc17b6 1000endpwent |pwd | |I_H|V_H
31ee0cb7 1001endservent |netdb | |I_D|V_D|D=struct servent_data*
10bc17b6
JH
1002getgrent |grp |struct group |I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH
1003getgrgid T |grp |struct group |I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=gid_t
1004getgrnam C |grp |struct group |I_CSBWR|I_CSBIR|S_CBI|I_CSBI|S_CSBI
1005gethostbyaddr CWI |netdb |struct hostent |I_CWISBWRE|S_CWISBWIE|S_CWISBIE|S_TWISBIE|S_CIISBIE|S_CSBIE|S_TSBIE|I_CWISD|I_CIISD|I_CII|D=struct hostent_data*|T=const void*
1006gethostbyname C |netdb |struct hostent |I_CSBWRE|S_CSBIE|I_CSD|D=struct hostent_data*
1007gethostent |netdb |struct hostent |I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct hostent_data*
1008getlogin |unistd | |I_BW|I_BI|B_BW|B_BI
1009getnetbyaddr LI |netdb |struct netent |I_UISBWRE|I_LISBI|S_TISBI|S_LISBI|I_TISD|I_LISD|I_IISD|D=struct netent_data*|T=in_addr_t|U=unsigned long
1010getnetbyname C |netdb |struct netent |I_CSBWRE|I_CSBI|S_CSBI|I_CSD|D=struct netent_data*
1011getnetent |netdb |struct netent |I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct netent_data*
1012getprotobyname C|netdb |struct protoent|I_CSBWR|S_CSBI|I_CSD|D=struct protoent_data*
1013getprotobynumber I |netdb |struct protoent|I_ISBWR|S_ISBI|I_ISD|D=struct protoent_data*
1014getprotoent |netdb |struct protoent|I_SBWR|I_SBI|S_SBI|I_SD|D=struct protoent_data*
1015getpwent |pwd |struct passwd |I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH
1016getpwnam C |pwd |struct passwd |I_CSBWR|I_CSBIR|S_CSBI|I_CSBI
1017getpwuid T |pwd |struct passwd |I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=uid_t
1018getservbyname CC|netdb |struct servent |I_CCSBWR|S_CCSBI|I_CCSD|D=struct servent_data*
1019getservbyport IC|netdb |struct servent |I_ICSBWR|S_ICSBI|I_ICSD|D=struct servent_data*
1020getservent |netdb |struct servent |I_SBWR|I_SBI|S_SBI|I_SD|D=struct servent_data*
1021getspnam C |shadow |struct spwd |I_CSBWR|S_CSBI
1022gmtime T |time |struct tm |S_TS|I_TS|T=const time_t*
1023localtime T |time |struct tm |S_TS|I_TS|T=const time_t*
1024random |stdlib |struct random_data|I_TS|T=int*
1025readdir T |dirent |struct dirent |I_TSR|I_TS|T=DIR*
1026readdir64 T |dirent |struct dirent64|I_TSR|I_TS|T=DIR*
1027setgrent |grp | |I_H|V_H
1028sethostent I |netdb | |I_ID|V_ID|D=struct hostent_data*
1029setlocale IC |locale | |I_ICBI
1030setnetent I |netdb | |I_ID|V_ID|D=struct netent_data*
1031setprotoent I |netdb | |I_ID|V_ID|D=struct protoent_data*
1032setpwent |pwd | |I_H|V_H
1033setservent I |netdb | |I_ID|V_ID|D=struct servent_data*
1034srand48 L |stdlib |struct drand48_data |I_LS
1035srandom T |stdlib |struct random_data|I_TS|T=unsigned int
1036strerror I |string | |I_IBW|I_IBI|B_IBW
1037tmpnam B |stdio | |B_B
1038ttyname I |unistd | |I_IBW|I_IBI|B_IBI