4 # Generate the reentr.c and reentr.h,
5 # and optionally also the relevant metaconfig units (-U option).
15 A => "char*", # as an input argument
16 B => "char*", # as an output argument
17 C => "const char*", # as a read-only input argument
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".)
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".
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)
38 die "reentr.h: $!" unless open(H, ">reentr.h");
44 * Copyright (c) 1997-2002, Larry Wall
46 * You may distribute under the terms of either the GNU General Public
47 * License or the Artistic License, as specified in the README file.
49 * !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
50 * This file is built by reentrl.pl from data in reentr.pl.
56 #ifdef USE_REENTRANT_API
58 /* Deprecations: some platforms have the said reentrant interfaces
59 * but they are declared obsolete and are not to be used. Often this
60 * means that the platform has threadsafed the interfaces (hopefully).
61 * All this is OS version dependent, so we are of course fooling ourselves.
62 * If you know of more deprecations on some platforms, please add your own. */
67 # undef HAS_ENDGRENT_R
68 # undef HAS_ENDPWENT_R
69 # undef HAS_GETGRENT_R
70 # undef HAS_GETPWENT_R
71 # undef HAS_SETLOCALE_R
73 # undef HAS_STRERROR_R
74 # define NETDB_R_OBSOLETE
77 #if defined(__osf__) && defined(__alpha) /* Tru64 aka Digital UNIX */
79 # undef HAS_STRERROR_R
80 # define NETDB_R_OBSOLETE
83 #ifdef NETDB_R_OBSOLETE
84 # undef HAS_ENDHOSTENT_R
85 # undef HAS_ENDNETENT_R
86 # undef HAS_ENDPROTOENT_R
87 # undef HAS_ENDSERVENT_R
88 # undef HAS_GETHOSTBYADDR_R
89 # undef HAS_GETHOSTBYNAME_R
90 # undef HAS_GETHOSTENT_R
91 # undef HAS_GETNETBYADDR_R
92 # undef HAS_GETNETBYNAME_R
93 # undef HAS_GETNETENT_R
94 # undef HAS_GETPROTOBYNAME_R
95 # undef HAS_GETPROTOBYNUMBER_R
96 # undef HAS_GETPROTOENT_R
97 # undef HAS_GETSERVBYNAME_R
98 # undef HAS_GETSERVBYPORT_R
99 # undef HAS_GETSERVENT_R
100 # undef HAS_SETHOSTENT_R
101 # undef HAS_SETNETENT_R
102 # undef HAS_SETPROTOENT_R
103 # undef HAS_SETSERVENT_R
116 # include <stdlib.h> /* drand48_data */
123 #ifdef HAS_GETSPNAM_R
143 my ($f, $h, $t, @p) = split(/\s*\|\s*/, $_, -1);
145 ($f, $u) = split(' ', $f);
146 $seenu{$f} = defined $u ? length $u : 0;
155 while ($p[-1] =~ /=/) {
156 my ($k, $v) = ($p[-1] =~ /^([A-Za-z])\s*=\s*(.*)/);
161 if ($opts{U} && open(U, ">d_${f}_r.U")) {
164 my $prereqh = $h eq 'stdio' ? '' : "i_$h"; # There's no i_stdio.
165 print <<EOF if $opts{U};
166 ?RCS: \$Id: d_${f}_r.U,v $
168 ?RCS: Copyright (c) 2002 Jarkko Hietaniemi
170 ?RCS: You may distribute under the terms of either the GNU General Public
171 ?RCS: License or the Artistic License, as specified in the README file.
173 ?RCS: Generated by the reentr.pl from the Perl 5.8 distribution.
175 ?MAKE:d_${f}_r ${f}_r_proto: Inlibc Protochk Hasproto i_systypes $prereqh usethreads
176 ?MAKE: -pick add \$@ %<
178 ?S: This variable conditionally defines the HAS_${F}_R symbol,
179 ?S: which indicates to the C program that the ${f}_r()
180 ?S: routine is available.
183 ?S: This variable encodes the prototype of ${f}_r.
186 ?C: This symbol, if defined, indicates that the ${f}_r routine
187 ?C: is available to ${f} re-entrantly.
190 ?C: This symbol encodes the prototype of ${f}_r.
192 ?H:#\$d_${f}_r HAS_${F}_R /**/
193 ?H:#define ${F}_R_PROTO \$${f}_r_proto /**/
195 ?T:try hdrs d_${f}_r_proto
197 ?LINT:set ${f}_r_proto
198 : see if ${f}_r exists
203 hdrs="\$i_systypes sys/types.h define stdio.h \$i_${h} $h.h"
204 case "\$d_${f}_r_proto:\$usethreads" in
205 ":define") d_${f}_r_proto=define
206 set d_${f}_r_proto ${f}_r \$hdrs
210 case "\$d_${f}_r_proto" in
214 my ($r, $a) = ($p =~ /^(.)_(.+)/);
215 my $v = join(", ", map { $m{$_} } split '', $a);
218 case "\$${f}_r_proto" in
219 ''|0) try='$m{$r} ${f}_r($v);'
220 ./protochk "extern \$try" \$hdrs && ${f}_r_proto=$p ;;
225 push @{$seena{$f}}, $p;
233 case "\$${f}_r_proto" in
236 echo "Disabling ${f}_r, cannot determine prototype." >&4 ;;
237 * ) case "\$${f}_r_proto" in
239 *) ${f}_r_proto="REENTRANT_PROTO_\$${f}_r_proto" ;;
241 echo "Prototype: \$try" ;;
244 *) case "\$usethreads" in
245 define) echo "${f}_r has no prototype, not using it." >&4 ;;
265 for my $p (sort keys %seenp) {
266 print "#define REENTRANT_PROTO_${p} ${i}\n";
273 join " || ", map { "${F}_R_PROTO == REENTRANT_PROTO_$_" } @_;
293 New(31338, PL_reentrant_buffer->_${f}_buffer, PL_reentrant_buffer->_${f}_size, char);
296 Safefree(PL_reentrant_buffer->_${f}_buffer);
301 my ($n, $p, @F) = @_;
305 /* The @F using \L$n? */
310 my $h = "${F}_R_HAS_$n";
312 my @h = grep { /$p/ } @{$seena{$f}};
314 push @define, "#if defined(HAS_${F}_R) && (" . join(" || ", map { "${F}_R_PROTO == REENTRANT_PROTO_$_" } @h) . ")\n";
326 /* Any of the @F using \L$n? */
329 push @define, "#if (" . join(" || ", map { "defined($_)" } @H) . ")\n";
339 define('BUFFER', 'B',
340 qw(getgrent getgrgid getgrnam));
343 qw(getgrent getgrgid getgrnam));
345 qw(getpwent getpwnam getpwuid));
347 qw(getspent getspnam));
350 qw(getgrent getgrgid getgrnam));
352 qw(getpwent getpwnam getpwuid));
354 define('BUFFER', 'B',
355 qw(getpwent getpwgid getpwnam));
358 qw(gethostent gethostbyaddr gethostbyname));
360 qw(getnetent getnetbyaddr getnetbyname));
362 qw(getprotoent getprotobyname getprotobynumber));
364 qw(getservent getservbyname getservbyport));
366 define('BUFFER', 'B',
367 qw(gethostent gethostbyaddr gethostbyname));
368 define('BUFFER', 'B',
369 qw(getnetent getnetbyaddr getnetbyname));
370 define('BUFFER', 'B',
371 qw(getprotoent getprotobyname getprotobynumber));
372 define('BUFFER', 'B',
373 qw(getservent getservbyname getservbyport));
376 qw(gethostent gethostbyaddr gethostbyname));
378 qw(getnetent getnetbyaddr getnetbyname));
382 my $ifdef = "#ifdef HAS_${F}_R\n";
383 my $endif = "#endif /* HAS_${F}_R */\n";
384 if (exists $seena{$f}) {
385 my @p = @{$seena{$f}};
386 if ($f =~ /^(asctime|ctime|getlogin|setlocale|strerror|ttyname)$/) {
393 PL_reentrant_buffer->_${f}_size = 256; /* Make something up. */
398 elsif ($f =~ /^(crypt)$/) {
401 #if CRYPT_R_PROTO == REENTRANT_PROTO_B_CCD
402 $seend{$f} _${f}_data;
404 $seent{$f} _${f}_struct;
409 PL_reentrant_buffer->_${f}_struct.initialized = 0;
414 elsif ($f =~ /^(drand48|gmtime|localtime|random)$/) {
417 $seent{$f} _${f}_struct;
419 if ($1 eq 'drand48') {
426 elsif ($f =~ /^(getgrnam|getpwnam|getspnam)$/) {
432 $seent{$f} _${g}_struct;
438 $seent{$f}* _${g}_ptr;
441 if ($g eq 'getspent') {
443 PL_reentrant_buffer->_${g}_size = 1024;
447 # ifdef USE_${G}_FPTR
452 # ifdef USE_${G}_FPTR
453 PL_reentrant_buffer->_${g}_fptr = NULL;
456 my $sc = $g eq 'getgrent' ?
457 '_SC_GETGR_R_SIZE_MAX' : '_SC_GETPW_R_SIZE_MAX';
459 # if defined(HAS_SYSCONF) && defined($sc) && !defined(__GLIBC__)
460 PL_reentrant_buffer->_${g}_size = sysconf($sc);
462 # if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
463 PL_reentrant_buffer->_${g}_size = SIABUFSIZ;
466 PL_reentrant_buffer->_${g}_size = BUFSIZ;
468 PL_reentrant_buffer->_${g}_size = 256;
477 elsif ($f =~ /^(gethostbyname|getnetbyname|getservbyname|getprotobyname)$/) {
482 my $D = ifprotomatch($F, grep {/D/} @p);
485 $seent{$f} _${g}_struct;
493 $seent{$f}* _${g}_ptr;
497 # ifdef USE_${G}_ERRNO
503 PL_reentrant_buffer->_${g}_size = 2048; /* Any better ideas? */
508 New(31338, PL_reentrant_buffer->_${g}_buffer, PL_reentrant_buffer->_${g}_size, char);
513 Safefree(PL_reentrant_buffer->_${g}_buffer);
518 elsif ($f =~ /^(readdir|readdir64)$/) {
520 my $R = ifprotomatch($F, grep {/R/} @p);
522 $seent{$f}* _${f}_struct;
525 $seent{$f}* _${f}_ptr;
529 /* This is the size Solaris recommends.
530 * (though we go static, should use pathconf() instead) */
531 PL_reentrant_buffer->_${f}_size = sizeof($seent{$f}) + MAXPATHLEN + 1;
534 PL_reentrant_buffer->_${f}_struct = ($seent{$f}*)safemalloc(PL_reentrant_buffer->_${f}_size);
537 Safefree(PL_reentrant_buffer->_${f}_struct);
544 # Doesn't implement the buffer growth loop for glibc gethostby*().
549 my $v = join(", ", @v[0..$seenu{$f}-1]);
551 my ($r, $a) = split '_', $p;
552 my $test = $r eq 'I' ? ' == 0' : '';
555 if ($g =~ /^(?:get|set|end)(pw|gr|host|net|proto|serv|sp)/) {
557 } elsif ($g eq 'srand48') {
562 substr($b, 0, $seenu{$f}) = '';
564 $true = "PL_reentrant_buffer->_${g}_ptr";
565 } elsif ($b =~ /T/ && $f eq 'drand48') {
566 $true = "PL_reentrant_buffer->_${g}_double";
567 } elsif ($b =~ /S/) {
568 if ($f =~ /^readdir/) {
569 $true = "PL_reentrant_buffer->_${g}_struct";
571 $true = "&PL_reentrant_buffer->_${g}_struct";
573 } elsif ($b =~ /B/) {
574 $true = "PL_reentrant_buffer->_${g}_buffer";
580 "&PL_reentrant_buffer->_${g}_ptr" :
582 "&PL_reentrant_buffer->_${g}_errno" :
584 "PL_reentrant_buffer->_${g}_buffer" :
586 "PL_reentrant_buffer->_${g}_size" :
588 "&PL_reentrant_buffer->_${g}_fptr" :
590 "&PL_reentrant_buffer->_${g}_data" :
593 "PL_reentrant_buffer->_${g}_struct" :
594 "&PL_reentrant_buffer->_${g}_struct" ) :
595 $_ eq 'T' && $f eq 'drand48' ?
596 "&PL_reentrant_buffer->_${g}_double" :
599 $w = ", $w" if length $v;
601 my $call = "${f}_r($v$w)";
602 $call = "((errno = $call))" if $r eq 'I';
604 # if !defined($f) && ${F}_R_PROTO == REENTRANT_PROTO_$p
606 if ($r eq 'V' || $r eq 'B') {
608 # define $f($v) $call
612 my $rv = $v ? ", $v" : "";
614 # define $f($v) ($call$test ? $true : (errno == ERANGE ? Perl_reentrant_retry("$f"$rv) : 0))
618 # define $f($v) ($call$test ? $true : 0)
627 push @wrap, $endif, "\n";
635 /* Defines for indicating which special features are supported. */
645 #endif /* USE_REENTRANT_API */
653 die "reentr.c: $!" unless open(C, ">reentr.c");
659 * Copyright (c) 1997-2002, Larry Wall
661 * You may distribute under the terms of either the GNU General Public
662 * License or the Artistic License, as specified in the README file.
664 * !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
665 * This file is built by reentrl.pl from data in reentr.pl.
667 * "Saruman," I said, standing away from him, "only one hand at a time can
668 * wield the One, and you know that well, so do not trouble to say we!"
673 #define PERL_IN_REENTR_C
678 Perl_reentrant_size(pTHX) {
679 #ifdef USE_REENTRANT_API
681 #endif /* USE_REENTRANT_API */
685 Perl_reentrant_init(pTHX) {
686 #ifdef USE_REENTRANT_API
687 New(31337, PL_reentrant_buffer, 1, REENTR);
688 Perl_reentrant_size(aTHX);
690 #endif /* USE_REENTRANT_API */
694 Perl_reentrant_free(pTHX) {
695 #ifdef USE_REENTRANT_API
697 Safefree(PL_reentrant_buffer);
698 #endif /* USE_REENTRANT_API */
702 Perl_reentrant_retry(const char *f, ...)
706 #ifdef USE_REENTRANT_API
714 #define REENTRANTHALFMAXSIZE 32768 /* The maximum may end up twice this. */
716 switch (PL_op->op_type) {
717 #ifdef USE_GETHOSTENT_BUFFER
722 if (PL_reentrant_buffer->_gethostent_size <= REENTRANTHALFMAXSIZE) {
723 PL_reentrant_buffer->_gethostent_size *= 2;
724 Renew(PL_reentrant_buffer->_gethostent_buffer,
725 PL_reentrant_buffer->_gethostent_size, char);
726 switch (PL_op->op_type) {
728 p0 = va_arg(ap, void *);
729 asize = va_arg(ap, size_t);
730 anint = va_arg(ap, int);
731 retptr = gethostbyaddr(p0, asize, anint); break;
733 p0 = va_arg(ap, void *);
734 retptr = gethostbyname(p0); break;
736 retptr = gethostent(); break;
744 #ifdef USE_GETGRENT_BUFFER
749 if (PL_reentrant_buffer->_getgrent_size <= REENTRANTHALFMAXSIZE) {
751 PL_reentrant_buffer->_getgrent_size *= 2;
752 Renew(PL_reentrant_buffer->_getgrent_buffer,
753 PL_reentrant_buffer->_getgrent_size, char);
754 switch (PL_op->op_type) {
756 p0 = va_arg(ap, void *);
757 retptr = getgrnam(p0); break;
759 gid = va_arg(ap, Gid_t);
760 retptr = getgrgid(gid); break;
762 retptr = getgrent(); break;
770 #ifdef USE_GETNETENT_BUFFER
775 if (PL_reentrant_buffer->_getnetent_size <= REENTRANTHALFMAXSIZE) {
777 PL_reentrant_buffer->_getnetent_size *= 2;
778 Renew(PL_reentrant_buffer->_getnetent_buffer,
779 PL_reentrant_buffer->_getnetent_size, char);
780 switch (PL_op->op_type) {
782 net = va_arg(ap, Netdb_net_t);
783 anint = va_arg(ap, int);
784 retptr = getnetbyaddr(net, anint); break;
786 p0 = va_arg(ap, void *);
787 retptr = getnetbyname(p0); break;
789 retptr = getnetent(); break;
797 #ifdef USE_GETPWENT_BUFFER
802 if (PL_reentrant_buffer->_getpwent_size <= REENTRANTHALFMAXSIZE) {
804 PL_reentrant_buffer->_getpwent_size *= 2;
805 Renew(PL_reentrant_buffer->_getpwent_buffer,
806 PL_reentrant_buffer->_getpwent_size, char);
807 switch (PL_op->op_type) {
809 p0 = va_arg(ap, void *);
810 retptr = getpwnam(p0); break;
812 uid = va_arg(ap, Uid_t);
813 retptr = getpwuid(uid); break;
815 retptr = getpwent(); break;
823 #ifdef USE_GETPROTOENT_BUFFER
828 if (PL_reentrant_buffer->_getprotoent_size <= REENTRANTHALFMAXSIZE) {
829 PL_reentrant_buffer->_getprotoent_size *= 2;
830 Renew(PL_reentrant_buffer->_getprotoent_buffer,
831 PL_reentrant_buffer->_getprotoent_size, char);
832 switch (PL_op->op_type) {
834 p0 = va_arg(ap, void *);
835 retptr = getprotobyname(p0); break;
837 anint = va_arg(ap, int);
838 retptr = getprotobynumber(anint); break;
840 retptr = getprotoent(); break;
848 #ifdef USE_GETSERVENT_BUFFER
853 if (PL_reentrant_buffer->_getservent_size <= REENTRANTHALFMAXSIZE) {
854 PL_reentrant_buffer->_getservent_size *= 2;
855 Renew(PL_reentrant_buffer->_getservent_buffer,
856 PL_reentrant_buffer->_getservent_size, char);
857 switch (PL_op->op_type) {
859 p0 = va_arg(ap, void *);
860 p1 = va_arg(ap, void *);
861 retptr = getservbyname(p0, p1); break;
863 anint = va_arg(ap, int);
864 p0 = va_arg(ap, void *);
865 retptr = getservbyport(anint, p0); break;
867 retptr = getservent(); break;
876 /* Not known how to retry, so just fail. */
888 asctime S |time |const struct tm|B_SB|B_SBI|I_SB|I_SBI
889 crypt CC |crypt |struct crypt_data|B_CCS|B_CCD|D=CRYPTD*
890 ctermid B |stdio | |B_B
891 ctime S |time |const time_t |B_SB|B_SBI|I_SB|I_SBI
892 drand48 |stdlib |struct drand48_data |I_ST|T=double*
893 endgrent |grp | |I_H|V_H
894 endhostent |netdb |struct hostent_data |I_S|V_S
895 endnetent |netdb |struct netent_data |I_S|V_S
896 endprotoent |netdb |struct protoent_data |I_S|V_S
897 endpwent |pwd | |I_H|V_H
898 endservent |netdb |struct servent_data |I_S|V_S
899 getgrent |grp |struct group |I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH
900 getgrgid T |grp |struct group |I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=gid_t
901 getgrnam C |grp |struct group |I_CSBWR|I_CSBIR|S_CBI|I_CSBI|S_CSBI
902 gethostbyaddr 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*
903 gethostbyname C |netdb |struct hostent |I_CSBWRE|S_CSBIE|I_CSD|D=struct hostent_data*
904 gethostent |netdb |struct hostent |I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct hostent_data*
905 getlogin |unistd | |I_BW|I_BI|B_BW|B_BI
906 getnetbyaddr 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
907 getnetbyname C |netdb |struct netent |I_CSBWRE|I_CSBI|S_CSBI|I_CSD|D=struct netent_data*
908 getnetent |netdb |struct netent |I_SBWRE|I_SBIE|S_SBIE|S_SBI|I_SBI|I_SD|D=struct netent_data*
909 getprotobyname C|netdb |struct protoent|I_CSBWR|S_CSBI|I_CSD|D=struct protoent_data*
910 getprotobynumber I |netdb |struct protoent|I_ISBWR|S_ISBI|I_ISD|D=struct protoent_data*
911 getprotoent |netdb |struct protoent|I_SBWR|I_SBI|S_SBI|I_SD|D=struct protoent_data*
912 getpwent |pwd |struct passwd |I_SBWR|I_SBIR|S_SBW|S_SBI|I_SBI|I_SBIH
913 getpwnam C |pwd |struct passwd |I_CSBWR|I_CSBIR|S_CSBI|I_CSBI
914 getpwuid T |pwd |struct passwd |I_TSBWR|I_TSBIR|I_TSBI|S_TSBI|T=uid_t
915 getservbyname CC|netdb |struct servent |I_CCSBWR|S_CCSBI|I_CCSD|D=struct servent_data*
916 getservbyport IC|netdb |struct servent |I_ICSBWR|S_ICSBI|I_ICSD|D=struct servent_data*
917 getservent |netdb |struct servent |I_SBWR|I_SBI|S_SBI|I_SD|D=struct servent_data*
918 getspnam C |shadow |struct spwd |I_CSBWR|S_CSBI
919 gmtime T |time |struct tm |S_TS|I_TS|T=const time_t*
920 localtime T |time |struct tm |S_TS|I_TS|T=const time_t*
921 random |stdlib |struct random_data|I_TS|T=int*
922 readdir T |dirent |struct dirent |I_TSR|I_TS|T=DIR*
923 readdir64 T |dirent |struct dirent64|I_TSR|I_TS|T=DIR*
924 setgrent |grp | |I_H|V_H
925 sethostent I |netdb | |I_ID|V_ID|D=struct hostent_data*
926 setlocale IC |locale | |I_ICBI
927 setnetent I |netdb | |I_ID|V_ID|D=struct netent_data*
928 setprotoent I |netdb | |I_ID|V_ID|D=struct protoent_data*
929 setpwent |pwd | |I_H|V_H
930 setservent I |netdb | |I_ID|V_ID|D=struct servent_data*
931 srand48 L |stdlib |struct drand48_data |I_LS
932 srandom T |stdlib |struct random_data|I_TS|T=unsigned int
933 strerror I |string | |I_IBW|I_IBI|B_IBW
934 tmpnam B |stdio | |B_B
935 ttyname I |unistd | |I_IBW|I_IBI|B_IBI