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| -rw-r--r-- | src/pl/plperl/plperl_system.h | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/src/pl/plperl/plperl_system.h b/src/pl/plperl/plperl_system.h new file mode 100644 index 0000000..61550db --- /dev/null +++ b/src/pl/plperl/plperl_system.h @@ -0,0 +1,215 @@ +/*------------------------------------------------------------------------- + * + * plperl_system.h + * Pull in Perl's system header files. + * + * We break this out as a separate header file to precisely control + * the scope of the "system_header" pragma. No Postgres-specific + * declarations should be put here. However, we do include some stuff + * that is meant to prevent conflicts between our code and Perl. + * + * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group + * Portions Copyright (c) 1995, Regents of the University of California + * + * src/pl/plperl/plperl_system.h + */ + +#ifndef PL_PERL_SYSTEM_H +#define PL_PERL_SYSTEM_H + +/* + * Newer versions of the perl headers trigger a lot of warnings with our + * preferred compiler flags (at least -Wdeclaration-after-statement, + * -Wshadow=compatible-local are known to be problematic). The system_header + * pragma hides warnings from within the rest of this file, if supported. + */ +#ifdef HAVE_PRAGMA_GCC_SYSTEM_HEADER +#pragma GCC system_header +#endif + +/* stop perl headers from hijacking stdio and other stuff on Windows */ +#ifdef WIN32 +#define WIN32IO_IS_STDIO +#endif /* WIN32 */ + +/* + * Supply a value of PERL_UNUSED_DECL that will satisfy gcc - the one + * perl itself supplies doesn't seem to. + */ +#define PERL_UNUSED_DECL pg_attribute_unused() + +/* + * Sometimes perl carefully scribbles on our *printf macros. + * So we undefine them here and redefine them after it's done its dirty deed. + */ +#undef vsnprintf +#undef snprintf +#undef vsprintf +#undef sprintf +#undef vfprintf +#undef fprintf +#undef vprintf +#undef printf + +/* + * Perl scribbles on the "_" macro too. + */ +#undef _ + +/* + * ActivePerl 5.18 and later are MinGW-built, and their headers use GCC's + * __inline__. Translate to something MSVC recognizes. Also, perl.h sometimes + * defines isnan, so undefine it here and put back the definition later if + * perl.h doesn't. + */ +#ifdef _MSC_VER +#define __inline__ inline +#ifdef isnan +#undef isnan +#endif +/* Work around for using MSVC and Strawberry Perl >= 5.30. */ +#define __builtin_expect(expr, val) (expr) +#endif + +/* + * Regarding bool, both PostgreSQL and Perl might use stdbool.h or not, + * depending on configuration. If both agree, things are relatively harmless. + * If not, things get tricky. If PostgreSQL does but Perl does not, define + * HAS_BOOL here so that Perl does not redefine bool; this avoids compiler + * warnings. If PostgreSQL does not but Perl does, we need to undefine bool + * after we include the Perl headers; see below. + */ +#ifdef PG_USE_STDBOOL +#define HAS_BOOL 1 +#endif + +/* + * Get the basic Perl API. We use PERL_NO_GET_CONTEXT mode so that our code + * can compile against MULTIPLICITY Perl builds without including XSUB.h. + */ +#define PERL_NO_GET_CONTEXT +#include "EXTERN.h" +#include "perl.h" + +/* + * We want to include XSUB.h only within .xs files, because on some platforms + * it undesirably redefines a lot of libc functions. But it must appear + * before ppport.h, so use a #define flag to control inclusion here. + */ +#ifdef PG_NEED_PERL_XSUB_H +/* + * On Windows, win32_port.h defines macros for a lot of these same functions. + * To avoid compiler warnings when XSUB.h redefines them, #undef our versions. + */ +#ifdef WIN32 +#undef accept +#undef bind +#undef connect +#undef fopen +#undef fstat +#undef kill +#undef listen +#undef lstat +#undef mkdir +#undef open +#undef putenv +#undef recv +#undef rename +#undef select +#undef send +#undef socket +#undef stat +#undef unlink +#endif + +#include "XSUB.h" +#endif + +/* put back our *printf macros ... this must match src/include/port.h */ +#ifdef vsnprintf +#undef vsnprintf +#endif +#ifdef snprintf +#undef snprintf +#endif +#ifdef vsprintf +#undef vsprintf +#endif +#ifdef sprintf +#undef sprintf +#endif +#ifdef vfprintf +#undef vfprintf +#endif +#ifdef fprintf +#undef fprintf +#endif +#ifdef vprintf +#undef vprintf +#endif +#ifdef printf +#undef printf +#endif + +#define vsnprintf pg_vsnprintf +#define snprintf pg_snprintf +#define vsprintf pg_vsprintf +#define sprintf pg_sprintf +#define vfprintf pg_vfprintf +#define fprintf pg_fprintf +#define vprintf pg_vprintf +#define printf(...) pg_printf(__VA_ARGS__) + +/* + * Put back "_" too; but rather than making it just gettext() as the core + * code does, make it dgettext() so that the right things will happen in + * loadable modules (if they've set up TEXTDOMAIN correctly). Note that + * we can't just set TEXTDOMAIN here, because this file is used by more + * extensions than just PL/Perl itself. + */ +#undef _ +#define _(x) dgettext(TEXTDOMAIN, x) + +/* put back the definition of isnan if needed */ +#ifdef _MSC_VER +#ifndef isnan +#define isnan(x) _isnan(x) +#endif +#endif + +/* perl version and platform portability */ +#include "ppport.h" + +/* + * perl might have included stdbool.h. If we also did that earlier (see c.h), + * then that's fine. If not, we probably rejected it for some reason. In + * that case, undef bool and proceed with our own bool. (Note that stdbool.h + * makes bool a macro, but our own replacement is a typedef, so the undef + * makes ours visible again). + */ +#ifndef PG_USE_STDBOOL +#ifdef bool +#undef bool +#endif +#endif + +/* supply HeUTF8 if it's missing - ppport.h doesn't supply it, unfortunately */ +#ifndef HeUTF8 +#define HeUTF8(he) ((HeKLEN(he) == HEf_SVKEY) ? \ + SvUTF8(HeKEY_sv(he)) : \ + (U32)HeKUTF8(he)) +#endif + +/* supply GvCV_set if it's missing - ppport.h doesn't supply it, unfortunately */ +#ifndef GvCV_set +#define GvCV_set(gv, cv) (GvCV(gv) = cv) +#endif + +/* Perl 5.19.4 changed array indices from I32 to SSize_t */ +#if PERL_BCDVERSION >= 0x5019004 +#define AV_SIZE_MAX SSize_t_MAX +#else +#define AV_SIZE_MAX I32_MAX +#endif + +#endif /* PL_PERL_SYSTEM_H */ |