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#ifndef _P_P_PORTABILITY_H_ |
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#define _P_P_PORTABILITY_H_ |
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/* Perl/Pollution/Portability Version 1.0007 */ |
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/* Copyright (C) 1999, Kenneth Albanowski. This code may be used and |
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distributed under the same license as any version of Perl. */ |
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/* For the latest version of this code, please retreive the Devel::PPPort |
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module from CPAN, contact the author at <kjahds@kjahds.com>, or check |
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with the Perl maintainers. */ |
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/* If you needed to customize this file for your project, please mention |
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your changes, and visible alter the version number. */ |
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/* |
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In order for a Perl extension module to be as portable as possible |
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across differing versions of Perl itself, certain steps need to be taken. |
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Including this header is the first major one, then using dTHR is all the |
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appropriate places and using a PL_ prefix to refer to global Perl |
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variables is the second. |
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*/ |
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/* If you use one of a few functions that were not present in earlier |
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versions of Perl, please add a define before the inclusion of ppport.h |
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for a static include, or use the GLOBAL request in a single module to |
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produce a global definition that can be referenced from the other |
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modules. |
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Function: Static define: Extern define: |
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newCONSTSUB() NEED_newCONSTSUB NEED_newCONSTSUB_GLOBAL |
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*/ |
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/* To verify whether ppport.h is needed for your module, and whether any |
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special defines should be used, ppport.h can be run through Perl to check |
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your source code. Simply say: |
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perl -x ppport.h *.c *.h *.xs foo/*.c [etc] |
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The result will be a list of patches suggesting changes that should at |
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least be acceptable, if not necessarily the most efficient solution, or a |
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fix for all possible problems. It won't catch where dTHR is needed, and |
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doesn't attempt to account for global macro or function definitions, |
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nested includes, typemaps, etc. |
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In order to test for the need of dTHR, please try your module under a |
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recent version of Perl that has threading compiled-in. |
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*/ |
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/* |
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#!/usr/bin/perl |
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@ARGV = ("*.xs") if !@ARGV; |
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%badmacros = %funcs = %macros = (); $replace = 0; |
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foreach (<DATA>) { |
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$funcs{$1} = 1 if /Provide:\s+(\S+)/; |
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$macros{$1} = 1 if /^#\s*define\s+([a-zA-Z0-9_]+)/; |
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$replace = $1 if /Replace:\s+(\d+)/; |
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$badmacros{$2}=$1 if $replace and /^#\s*define\s+([a-zA-Z0-9_]+).*?\s+([a-zA-Z0-9_]+)/; |
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$badmacros{$1}=$2 if /Replace (\S+) with (\S+)/; |
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} |
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foreach $filename (map(glob($_),@ARGV)) { |
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unless (open(IN, "<$filename")) { |
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warn "Unable to read from $file: $!\n"; |
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next; |
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} |
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print "Scanning $filename...\n"; |
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$c = ""; while (<IN>) { $c .= $_; } close(IN); |
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$need_include = 0; %add_func = (); $changes = 0; |
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$has_include = ($c =~ /#.*include.*ppport/m); |
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foreach $func (keys %funcs) { |
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if ($c =~ /#.*define.*\bNEED_$func(_GLOBAL)?\b/m) { |
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if ($c !~ /\b$func\b/m) { |
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print "If $func isn't needed, you don't need to request it.\n" if |
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$changes += ($c =~ s/^.*#.*define.*\bNEED_$func\b.*\n//m); |
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} else { |
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print "Uses $func\n"; |
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$need_include = 1; |
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} |
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} else { |
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if ($c =~ /\b$func\b/m) { |
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$add_func{$func} =1 ; |
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print "Uses $func\n"; |
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$need_include = 1; |
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} |
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} |
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} |
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if (not $need_include) { |
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foreach $macro (keys %macros) { |
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if ($c =~ /\b$macro\b/m) { |
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print "Uses $macro\n"; |
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$need_include = 1; |
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} |
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} |
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} |
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foreach $badmacro (keys %badmacros) { |
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if ($c =~ /\b$badmacro\b/m) { |
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$changes += ($c =~ s/\b$badmacro\b/$badmacros{$badmacro}/gm); |
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print "Uses $badmacros{$badmacro} (instead of $badmacro)\n"; |
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$need_include = 1; |
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} |
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} |
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if (scalar(keys %add_func) or $need_include != $has_include) { |
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if (!$has_include) { |
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$inc = join('',map("#define NEED_$_\n", sort keys %add_func)). |
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"#include \"ppport.h\"\n"; |
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$c = "$inc$c" unless $c =~ s/#.*include.*XSUB.*\n/$&$inc/m; |
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} elsif (keys %add_func) { |
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$inc = join('',map("#define NEED_$_\n", sort keys %add_func)); |
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$c = "$inc$c" unless $c =~ s/^.*#.*include.*ppport.*$/$inc$&/m; |
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} |
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if (!$need_include) { |
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print "Doesn't seem to need ppport.h.\n"; |
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$c =~ s/^.*#.*include.*ppport.*\n//m; |
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} |
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$changes++; |
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} |
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if ($changes) { |
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open(OUT,">/tmp/ppport.h.$$"); |
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print OUT $c; |
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close(OUT); |
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open(DIFF, "diff -u $filename /tmp/ppport.h.$$|"); |
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while (<DIFF>) { s!/tmp/ppport\.h\.$$!$filename.patched!; print STDOUT; } |
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close(DIFF); |
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unlink("/tmp/ppport.h.$$"); |
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} else { |
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print "Looks OK\n"; |
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} |
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} |
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__DATA__ |
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*/ |
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#ifndef PERL_REVISION |
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# ifndef __PATCHLEVEL_H_INCLUDED__ |
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# include "patchlevel.h" |
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# endif |
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# ifndef PERL_REVISION |
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# define PERL_REVISION (5) |
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/* Replace: 1 */ |
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# define PERL_VERSION PATCHLEVEL |
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# define PERL_SUBVERSION SUBVERSION |
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/* Replace PERL_PATCHLEVEL with PERL_VERSION */ |
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/* Replace: 0 */ |
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# endif |
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#endif |
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#define PERL_BCDVERSION ((PERL_REVISION * 0x1000000L) + (PERL_VERSION * 0x1000L) + PERL_SUBVERSION) |
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#ifndef ERRSV |
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# define ERRSV perl_get_sv("@",FALSE) |
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#endif |
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#if (PERL_VERSION < 4) || ((PERL_VERSION == 4) && (PERL_SUBVERSION <= 5)) |
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/* Replace: 1 */ |
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# define PL_sv_undef sv_undef |
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# define PL_sv_yes sv_yes |
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# define PL_sv_no sv_no |
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# define PL_na na |
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# define PL_stdingv stdingv |
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# define PL_hints hints |
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# define PL_curcop curcop |
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# define PL_curstash curstash |
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# define PL_copline copline |
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# define PL_Sv Sv |
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/* Replace: 0 */ |
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#endif |
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#ifndef dTHR |
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# ifdef WIN32 |
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# define dTHR extern int Perl___notused |
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# else |
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# define dTHR extern int errno |
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# endif |
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#endif |
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#ifndef boolSV |
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# define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no) |
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#endif |
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#ifndef gv_stashpvn |
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# define gv_stashpvn(str,len,flags) gv_stashpv(str,flags) |
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#endif |
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#ifndef newSVpvn |
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# define newSVpvn(data,len) ((len) ? newSVpv ((data), (len)) : newSVpv ("", 0)) |
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#endif |
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#ifndef newRV_inc |
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/* Replace: 1 */ |
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# define newRV_inc(sv) newRV(sv) |
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/* Replace: 0 */ |
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#endif |
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#ifndef newRV_noinc |
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# ifdef __GNUC__ |
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# define newRV_noinc(sv) \ |
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({ \ |
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SV *nsv = (SV*)newRV(sv); \ |
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SvREFCNT_dec(sv); \ |
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nsv; \ |
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}) |
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# else |
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# if defined(CRIPPLED_CC) || defined(USE_THREADS) |
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static SV * newRV_noinc (SV * sv) |
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{ |
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SV *nsv = (SV*)newRV(sv); |
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SvREFCNT_dec(sv); |
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return nsv; |
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} |
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# else |
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# define newRV_noinc(sv) \ |
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((PL_Sv=(SV*)newRV(sv), SvREFCNT_dec(sv), (SV*)PL_Sv) |
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# endif |
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# endif |
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#endif |
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/* Provide: newCONSTSUB */ |
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/* newCONSTSUB from IO.xs is in the core starting with 5.004_63 */ |
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#if (PERL_VERSION < 4) || ((PERL_VERSION == 4) && (PERL_SUBVERSION < 63)) |
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#if defined(NEED_newCONSTSUB) |
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static |
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#else |
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extern void newCONSTSUB _((HV * stash, char * name, SV *sv)); |
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#endif |
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#if defined(NEED_newCONSTSUB) || defined(NEED_newCONSTSUB_GLOBAL) |
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void |
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newCONSTSUB(stash,name,sv) |
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HV *stash; |
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char *name; |
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SV *sv; |
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{ |
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U32 oldhints = PL_hints; |
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HV *old_cop_stash = PL_curcop->cop_stash; |
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HV *old_curstash = PL_curstash; |
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line_t oldline = PL_curcop->cop_line; |
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PL_curcop->cop_line = PL_copline; |
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PL_hints &= ~HINT_BLOCK_SCOPE; |
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if (stash) |
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PL_curstash = PL_curcop->cop_stash = stash; |
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newSUB( |
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#if (PERL_VERSION < 3) || ((PERL_VERSION == 3) && (PERL_SUBVERSION < 22)) |
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/* before 5.003_22 */ |
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start_subparse(), |
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#else |
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# if (PERL_VERSION == 3) && (PERL_SUBVERSION == 22) |
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/* 5.003_22 */ |
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start_subparse(0), |
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# else |
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/* 5.003_23 onwards */ |
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start_subparse(FALSE, 0), |
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# endif |
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#endif |
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newSVOP(OP_CONST, 0, newSVpv(name,0)), |
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newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */ |
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newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv)) |
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); |
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PL_hints = oldhints; |
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PL_curcop->cop_stash = old_cop_stash; |
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PL_curstash = old_curstash; |
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PL_curcop->cop_line = oldline; |
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} |
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#endif |
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#endif /* newCONSTSUB */ |
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#endif /* _P_P_PORTABILITY_H_ */ |