451 lines
13 KiB
C
451 lines
13 KiB
C
--- lib/Image/ppport.h.orig Sun Apr 9 20:45:22 2000
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+++ lib/Image/ppport.h Tue Mar 30 18:36:57 2004
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@@ -1,57 +1,81 @@
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-#ifndef _P_P_PORTABILITY_H_
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-#define _P_P_PORTABILITY_H_
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-
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-/* Perl/Pollution/Portability Version 1.0007 */
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-
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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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-
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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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-
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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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+/* ppport.h -- Perl/Pollution/Portability Version 2.0002
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+ *
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+ * Automatically Created by Devel::PPPort on Tue Mar 30 18:36:57 2004
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+ *
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+ * Do NOT edit this file directly! -- Edit PPPort.pm instead.
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+ *
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+ * Version 2.x, Copyright (C) 2001, Paul Marquess.
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+ * Version 1.x, Copyright (C) 1999, Kenneth Albanowski.
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+ * This code may be used and distributed under the same license as any
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+ * version of Perl.
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+ *
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+ * This version of ppport.h is designed to support operation with Perl
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+ * installations back to 5.004, and has been tested up to 5.8.0.
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+ *
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+ * If this version of ppport.h is failing during the compilation of this
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+ * module, please check if a newer version of Devel::PPPort is available
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+ * on CPAN before sending a bug report.
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+ *
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+ * If you are using the latest version of Devel::PPPort and it is failing
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+ * during compilation of this module, please send a report to perlbug@perl.com
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+ *
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+ * Include all following information:
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+ *
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+ * 1. The complete output from running "perl -V"
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+ *
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+ * 2. This file.
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+ *
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+ * 3. The name & version of the module you were trying to build.
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+ *
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+ * 4. A full log of the build that failed.
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+ *
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+ * 5. Any other information that you think could be relevant.
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+ *
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+ *
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+ * For the latest version of this code, please retreive the Devel::PPPort
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+ * module from CPAN.
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+ *
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+ */
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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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+ * 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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+ */
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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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-
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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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-*/
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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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+ *
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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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+ */
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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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-
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- perl -x ppport.h *.c *.h *.xs foo/*.c [etc]
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-
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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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-
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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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+ * 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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+ *
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+ * perl -x ppport.h *.c *.h *.xs foo/bar*.c [etc]
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+ *
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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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+ *
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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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/*
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@@ -141,6 +165,9 @@
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__DATA__
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*/
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+#ifndef _P_P_PORTABILITY_H_
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+#define _P_P_PORTABILITY_H_
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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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@@ -157,33 +184,109 @@
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#define PERL_BCDVERSION ((PERL_REVISION * 0x1000000L) + (PERL_VERSION * 0x1000L) + PERL_SUBVERSION)
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+/* It is very unlikely that anyone will try to use this with Perl 6
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+ (or greater), but who knows.
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+ */
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+#if PERL_REVISION != 5
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+# error ppport.h only works with Perl version 5
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+#endif /* PERL_REVISION != 5 */
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+
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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_Sv Sv
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+# define PL_compiling compiling
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+# define PL_copline copline
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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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+# define PL_defgv defgv
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+# define PL_dirty dirty
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+# define PL_dowarn dowarn
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+# define PL_hints hints
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+# define PL_na na
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+# define PL_perldb perldb
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+# define PL_rsfp_filters rsfp_filters
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+# define PL_rsfpv rsfp
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+# define PL_stdingv stdingv
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+# define PL_sv_no sv_no
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+# define PL_sv_undef sv_undef
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+# define PL_sv_yes sv_yes
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/* Replace: 0 */
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#endif
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+#ifdef HASATTRIBUTE
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+# if defined(__GNUC__) && defined(__cplusplus)
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+# define PERL_UNUSED_DECL
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+# else
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+# define PERL_UNUSED_DECL __attribute__((unused))
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+# endif
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+#else
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+# define PERL_UNUSED_DECL
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+#endif
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+
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+#ifndef dNOOP
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+# define NOOP (void)0
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+# define dNOOP extern int Perl___notused PERL_UNUSED_DECL
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+#endif
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+
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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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+# define dTHR dNOOP
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+#endif
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+
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+#ifndef dTHX
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+# define dTHX dNOOP
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+# define dTHXa(x) dNOOP
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+# define dTHXoa(x) dNOOP
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+#endif
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+
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+#ifndef pTHX
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+# define pTHX void
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+# define pTHX_
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+# define aTHX
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+# define aTHX_
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+#endif
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+
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+#ifndef UVSIZE
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+# define UVSIZE IVSIZE
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+#endif
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+
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+#ifndef NVTYPE
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+# if defined(USE_LONG_DOUBLE) && defined(HAS_LONG_DOUBLE)
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+# define NVTYPE long double
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+# else
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+# define NVTYPE double
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+# endif
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+typedef NVTYPE NV;
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+#endif
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+
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+#ifndef INT2PTR
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+
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+#if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
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+# define PTRV UV
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+# define INT2PTR(any,d) (any)(d)
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+#else
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+# if PTRSIZE == LONGSIZE
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+# define PTRV unsigned long
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# else
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-# define dTHR extern int errno
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+# define PTRV unsigned
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# endif
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+# define INT2PTR(any,d) (any)(PTRV)(d)
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+#endif
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+#define NUM2PTR(any,d) (any)(PTRV)(d)
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+#define PTR2IV(p) INT2PTR(IV,p)
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+#define PTR2UV(p) INT2PTR(UV,p)
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+#define PTR2NV(p) NUM2PTR(NV,p)
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+#if PTRSIZE == LONGSIZE
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+# define PTR2ul(p) (unsigned long)(p)
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+#else
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+# define PTR2ul(p) INT2PTR(unsigned long,p)
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#endif
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+#endif /* !INT2PTR */
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+
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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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@@ -202,6 +305,15 @@
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/* Replace: 0 */
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#endif
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+/* DEFSV appears first in 5.004_56 */
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+#ifndef DEFSV
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+# define DEFSV GvSV(PL_defgv)
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+#endif
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+
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+#ifndef SAVE_DEFSV
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+# define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
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+#endif
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+
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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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@@ -211,7 +323,7 @@
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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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+# if 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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@@ -220,7 +332,7 @@
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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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+ (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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@@ -233,7 +345,7 @@
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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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+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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@@ -282,5 +394,147 @@
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#endif /* newCONSTSUB */
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+#ifndef START_MY_CXT
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+
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+/*
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+ * Boilerplate macros for initializing and accessing interpreter-local
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+ * data from C. All statics in extensions should be reworked to use
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+ * this, if you want to make the extension thread-safe. See ext/re/re.xs
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+ * for an example of the use of these macros.
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+ *
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+ * Code that uses these macros is responsible for the following:
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+ * 1. #define MY_CXT_KEY to a unique string, e.g. "DynaLoader_guts"
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+ * 2. Declare a typedef named my_cxt_t that is a structure that contains
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+ * all the data that needs to be interpreter-local.
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+ * 3. Use the START_MY_CXT macro after the declaration of my_cxt_t.
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+ * 4. Use the MY_CXT_INIT macro such that it is called exactly once
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+ * (typically put in the BOOT: section).
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+ * 5. Use the members of the my_cxt_t structure everywhere as
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+ * MY_CXT.member.
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+ * 6. Use the dMY_CXT macro (a declaration) in all the functions that
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+ * access MY_CXT.
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+ */
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+
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+#if defined(MULTIPLICITY) || defined(PERL_OBJECT) || \
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+ defined(PERL_CAPI) || defined(PERL_IMPLICIT_CONTEXT)
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+
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+/* This must appear in all extensions that define a my_cxt_t structure,
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+ * right after the definition (i.e. at file scope). The non-threads
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+ * case below uses it to declare the data as static. */
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+#define START_MY_CXT
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+
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+#if (PERL_VERSION < 4 || (PERL_VERSION == 4 && PERL_SUBVERSION < 68 ))
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+/* Fetches the SV that keeps the per-interpreter data. */
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+#define dMY_CXT_SV \
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+ SV *my_cxt_sv = perl_get_sv(MY_CXT_KEY, FALSE)
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+#else /* >= perl5.004_68 */
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+#define dMY_CXT_SV \
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+ SV *my_cxt_sv = *hv_fetch(PL_modglobal, MY_CXT_KEY, \
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+ sizeof(MY_CXT_KEY)-1, TRUE)
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+#endif /* < perl5.004_68 */
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+
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+/* This declaration should be used within all functions that use the
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+ * interpreter-local data. */
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+#define dMY_CXT \
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+ dMY_CXT_SV; \
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+ my_cxt_t *my_cxtp = INT2PTR(my_cxt_t*,SvUV(my_cxt_sv))
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+
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+/* Creates and zeroes the per-interpreter data.
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+ * (We allocate my_cxtp in a Perl SV so that it will be released when
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+ * the interpreter goes away.) */
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+#define MY_CXT_INIT \
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+ dMY_CXT_SV; \
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+ /* newSV() allocates one more than needed */ \
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+ my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1));\
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+ Zero(my_cxtp, 1, my_cxt_t); \
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+ sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
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+
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+/* This macro must be used to access members of the my_cxt_t structure.
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+ * e.g. MYCXT.some_data */
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+#define MY_CXT (*my_cxtp)
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+
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+/* Judicious use of these macros can reduce the number of times dMY_CXT
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+ * is used. Use is similar to pTHX, aTHX etc. */
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+#define pMY_CXT my_cxt_t *my_cxtp
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+#define pMY_CXT_ pMY_CXT,
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+#define _pMY_CXT ,pMY_CXT
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+#define aMY_CXT my_cxtp
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+#define aMY_CXT_ aMY_CXT,
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+#define _aMY_CXT ,aMY_CXT
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+
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+#else /* single interpreter */
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+
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+
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+#define START_MY_CXT static my_cxt_t my_cxt;
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+#define dMY_CXT_SV dNOOP
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+#define dMY_CXT dNOOP
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+#define MY_CXT_INIT NOOP
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+#define MY_CXT my_cxt
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+
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+#define pMY_CXT void
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+#define pMY_CXT_
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+#define _pMY_CXT
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+#define aMY_CXT
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+#define aMY_CXT_
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+#define _aMY_CXT
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+
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+#endif
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+
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+#endif /* START_MY_CXT */
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+
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+#ifndef IVdf
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+# if IVSIZE == LONGSIZE
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+# define IVdf "ld"
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+# define UVuf "lu"
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+# define UVof "lo"
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+# define UVxf "lx"
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+# define UVXf "lX"
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+# else
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+# if IVSIZE == INTSIZE
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+# define IVdf "d"
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+# define UVuf "u"
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+# define UVof "o"
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+# define UVxf "x"
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+# define UVXf "X"
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+# endif
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+# endif
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+#endif
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+
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+#ifndef NVef
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+# if defined(USE_LONG_DOUBLE) && defined(HAS_LONG_DOUBLE) && \
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+ defined(PERL_PRIfldbl) /* Not very likely, but let's try anyway. */
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+# define NVef PERL_PRIeldbl
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+# define NVff PERL_PRIfldbl
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+# define NVgf PERL_PRIgldbl
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+# else
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+# define NVef "e"
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+# define NVff "f"
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+# define NVgf "g"
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+# endif
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+#endif
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+
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+#ifndef AvFILLp /* Older perls (<=5.003) lack AvFILLp */
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+# define AvFILLp AvFILL
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+#endif
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+
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+#ifdef SvPVbyte
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+# if PERL_REVISION == 5 && PERL_VERSION < 7
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+ /* SvPVbyte does not work in perl-5.6.1, borrowed version for 5.7.3 */
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+# undef SvPVbyte
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+# define SvPVbyte(sv, lp) \
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+ ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \
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+ ? ((lp = SvCUR(sv)), SvPVX(sv)) : my_sv_2pvbyte(aTHX_ sv, &lp))
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+ static char *
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+ my_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
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+ {
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+ sv_utf8_downgrade(sv,0);
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+ return SvPV(sv,*lp);
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+ }
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+# endif
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+#else
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+# define SvPVbyte SvPV
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+#endif
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#endif /* _P_P_PORTABILITY_H_ */
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+
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+/* End of File ppport.h */
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