ppport.h

PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统

		   newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv))
		);

	PL_hints = oldhints;
	PL_curcop->cop_stash = old_cop_stash;
	PL_curstash = old_curstash;
	PL_curcop->cop_line = oldline;
}
#endif
#endif   /* newCONSTSUB */

#ifndef START_MY_CXT

/*
 * Boilerplate macros for initializing and accessing interpreter-local
 * data from C.  All statics in extensions should be reworked to use
 * this, if you want to make the extension thread-safe.  See ext/re/re.xs
 * for an example of the use of these macros.
 *
 * Code that uses these macros is responsible for the following:
 * 1. #define MY_CXT_KEY to a unique string, e.g. "DynaLoader_guts"
 * 2. Declare a typedef named my_cxt_t that is a structure that contains
 *	  all the data that needs to be interpreter-local.
 * 3. Use the START_MY_CXT macro after the declaration of my_cxt_t.
 * 4. Use the MY_CXT_INIT macro such that it is called exactly once
 *	  (typically put in the BOOT: section).
 * 5. Use the members of the my_cxt_t structure everywhere as
 *	  MY_CXT.member.
 * 6. Use the dMY_CXT macro (a declaration) in all the functions that
 *	  access MY_CXT.
 */

#if defined(MULTIPLICITY) || defined(PERL_OBJECT) || \
	defined(PERL_CAPI)	  || defined(PERL_IMPLICIT_CONTEXT)

/* This must appear in all extensions that define a my_cxt_t structure,
 * right after the definition (i.e. at file scope).  The non-threads
 * case below uses it to declare the data as static. */
#define START_MY_CXT

#if (PERL_VERSION < 4 || (PERL_VERSION == 4 && PERL_SUBVERSION < 68 ))
/* Fetches the SV that keeps the per-interpreter data. */
#define dMY_CXT_SV \
	SV *my_cxt_sv = perl_get_sv(MY_CXT_KEY, FALSE)
#else							/* >= perl5.004_68 */
#define dMY_CXT_SV \
	SV *my_cxt_sv = *hv_fetch(PL_modglobal, MY_CXT_KEY,		\
				  sizeof(MY_CXT_KEY)-1, TRUE)
#endif   /* < perl5.004_68 */

/* This declaration should be used within all functions that use the
 * interpreter-local data. */
#define dMY_CXT \
	dMY_CXT_SV;							\
	my_cxt_t *my_cxtp = INT2PTR(my_cxt_t*,SvUV(my_cxt_sv))

/* Creates and zeroes the per-interpreter data.
 * (We allocate my_cxtp in a Perl SV so that it will be released when
 * the interpreter goes away.) */
#define MY_CXT_INIT \
	dMY_CXT_SV;							\
	/* newSV() allocates one more than needed */			\
	my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1));\
	Zero(my_cxtp, 1, my_cxt_t);					\
	sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))

/* This macro must be used to access members of the my_cxt_t structure.
 * e.g. MYCXT.some_data */
#define MY_CXT		(*my_cxtp)

/* Judicious use of these macros can reduce the number of times dMY_CXT
 * is used.  Use is similar to pTHX, aTHX etc. */
#define pMY_CXT		my_cxt_t *my_cxtp
#define pMY_CXT_	pMY_CXT,
#define _pMY_CXT	,pMY_CXT
#define aMY_CXT		my_cxtp
#define aMY_CXT_	aMY_CXT,
#define _aMY_CXT	,aMY_CXT
#else							/* single interpreter */

#define START_MY_CXT	static my_cxt_t my_cxt;
#define dMY_CXT_SV	dNOOP
#define dMY_CXT		dNOOP
#define MY_CXT_INIT NOOP
#define MY_CXT		my_cxt

#define pMY_CXT		void
#define pMY_CXT_
#define _pMY_CXT
#define aMY_CXT
#define aMY_CXT_
#define _aMY_CXT
#endif
#endif   /* START_MY_CXT */

#ifndef IVdf
#if IVSIZE == LONGSIZE
#define  IVdf		 "ld"
#define  UVuf		 "lu"
#define  UVof		 "lo"
#define  UVxf		 "lx"
#define  UVXf		 "lX"
#else
#if IVSIZE == INTSIZE
#define  IVdf	 "d"
#define  UVuf	 "u"
#define  UVof	 "o"
#define  UVxf	 "x"
#define  UVXf	 "X"
#endif
#endif
#endif

#ifndef NVef
#if defined(USE_LONG_DOUBLE) && defined(HAS_LONG_DOUBLE) && \
	defined(PERL_PRIfldbl)		/* Not very likely, but let's try anyway. */
#define NVef	 PERL_PRIeldbl
#define NVff	 PERL_PRIfldbl
#define NVgf	 PERL_PRIgldbl
#else
#define NVef	 "e"
#define NVff	 "f"
#define NVgf	 "g"
#endif
#endif

#ifndef AvFILLp					/* Older perls (<=5.003) lack AvFILLp */
#define AvFILLp AvFILL
#endif

#ifdef SvPVbyte
#if PERL_REVISION == 5 && PERL_VERSION < 7
 /* SvPVbyte does not work in perl-5.6.1, borrowed version for 5.7.3 */
#undef SvPVbyte
#define SvPVbyte(sv, lp) \
		  ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \
		   ? ((lp = SvCUR(sv)), SvPVX(sv)) : my_sv_2pvbyte(aTHX_ sv, &lp))
static char *
my_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
{
	sv_utf8_downgrade(sv, 0);
	return SvPV(sv, *lp);
}
#endif
#else
#define SvPVbyte SvPV
#endif

#ifndef SvPV_nolen
#define SvPV_nolen(sv) \
		((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
		 ? SvPVX(sv) : sv_2pv_nolen(sv))
static char *
sv_2pv_nolen(pTHX_ register SV *sv)
{
	STRLEN		n_a;

	return sv_2pv(sv, &n_a);
}
#endif

#ifndef get_cv
#define get_cv(name,create) perl_get_cv(name,create)
#endif

#ifndef get_sv
#define get_sv(name,create) perl_get_sv(name,create)
#endif

#ifndef get_av
#define get_av(name,create) perl_get_av(name,create)
#endif

#ifndef get_hv
#define get_hv(name,create) perl_get_hv(name,create)
#endif

#ifndef call_argv
#define call_argv perl_call_argv
#endif

#ifndef call_method
#define call_method perl_call_method
#endif

#ifndef call_pv
#define call_pv perl_call_pv
#endif

#ifndef call_sv
#define call_sv perl_call_sv
#endif

#ifndef eval_pv
#define eval_pv perl_eval_pv
#endif

#ifndef eval_sv
#define eval_sv perl_eval_sv
#endif

#ifndef PERL_SCAN_GREATER_THAN_UV_MAX
#define PERL_SCAN_GREATER_THAN_UV_MAX 0x02
#endif

#ifndef PERL_SCAN_SILENT_ILLDIGIT
#define PERL_SCAN_SILENT_ILLDIGIT 0x04
#endif

#ifndef PERL_SCAN_ALLOW_UNDERSCORES
#define PERL_SCAN_ALLOW_UNDERSCORES 0x01
#endif

#ifndef PERL_SCAN_DISALLOW_PREFIX
#define PERL_SCAN_DISALLOW_PREFIX 0x02
#endif

#if (PERL_VERSION > 6) || ((PERL_VERSION == 6) && (PERL_SUBVERSION >= 1))
#define I32_CAST
#else
#define I32_CAST (I32*)
#endif


#ifndef IN_LOCALE
#define IN_LOCALE \
	(PL_curcop == &PL_compiling ? IN_LOCALE_COMPILETIME : IN_LOCALE_RUNTIME)
#endif

#ifndef IN_LOCALE_RUNTIME
#define IN_LOCALE_RUNTIME	(PL_curcop->op_private & HINT_LOCALE)
#endif

#ifndef IN_LOCALE_COMPILETIME
#define IN_LOCALE_COMPILETIME	(PL_hints & HINT_LOCALE)
#endif


#ifndef IS_NUMBER_IN_UV
#define IS_NUMBER_IN_UV					 0x01
#define IS_NUMBER_GREATER_THAN_UV_MAX	 0x02
#define IS_NUMBER_NOT_INT				 0x04
#define IS_NUMBER_NEG					 0x08
#define IS_NUMBER_INFINITY				 0x10
#define IS_NUMBER_NAN					 0x20
#endif

#ifndef PERL_MAGIC_sv
#define PERL_MAGIC_sv			  '\0'
#endif

#ifndef PERL_MAGIC_overload
#define PERL_MAGIC_overload		  'A'
#endif

#ifndef PERL_MAGIC_overload_elem
#define PERL_MAGIC_overload_elem  'a'
#endif

#ifndef PERL_MAGIC_overload_table
#define PERL_MAGIC_overload_table 'c'
#endif

#ifndef PERL_MAGIC_bm
#define PERL_MAGIC_bm			  'B'
#endif

#ifndef PERL_MAGIC_regdata
#define PERL_MAGIC_regdata		  'D'
#endif

#ifndef PERL_MAGIC_regdatum
#define PERL_MAGIC_regdatum		  'd'
#endif

#ifndef PERL_MAGIC_env
#define PERL_MAGIC_env			  'E'
#endif

#ifndef PERL_MAGIC_envelem
#define PERL_MAGIC_envelem		  'e'
#endif

#ifndef PERL_MAGIC_fm
#define PERL_MAGIC_fm			  'f'
#endif

#ifndef PERL_MAGIC_regex_global
#define PERL_MAGIC_regex_global   'g'
#endif

#ifndef PERL_MAGIC_isa
#define PERL_MAGIC_isa			  'I'
#endif

#ifndef PERL_MAGIC_isaelem
#define PERL_MAGIC_isaelem		  'i'
#endif

#ifndef PERL_MAGIC_nkeys
#define PERL_MAGIC_nkeys		  'k'
#endif

#ifndef PERL_MAGIC_dbfile
#define PERL_MAGIC_dbfile		  'L'
#endif

#ifndef PERL_MAGIC_dbline
#define PERL_MAGIC_dbline		  'l'
#endif

#ifndef PERL_MAGIC_mutex
#define PERL_MAGIC_mutex		  'm'
#endif

#ifndef PERL_MAGIC_shared
#define PERL_MAGIC_shared		  'N'
#endif

#ifndef PERL_MAGIC_shared_scalar
#define PERL_MAGIC_shared_scalar  'n'
#endif

#ifndef PERL_MAGIC_collxfrm
#define PERL_MAGIC_collxfrm		  'o'
#endif

#ifndef PERL_MAGIC_tied
#define PERL_MAGIC_tied			  'P'
#endif

#ifndef PERL_MAGIC_tiedelem
#define PERL_MAGIC_tiedelem		  'p'
#endif

#ifndef PERL_MAGIC_tiedscalar
#define PERL_MAGIC_tiedscalar	  'q'
#endif

#ifndef PERL_MAGIC_qr
#define PERL_MAGIC_qr			  'r'
#endif

#ifndef PERL_MAGIC_sig
#define PERL_MAGIC_sig			  'S'
#endif

#ifndef PERL_MAGIC_sigelem
#define PERL_MAGIC_sigelem		  's'
#endif

#ifndef PERL_MAGIC_taint
#define PERL_MAGIC_taint		  't'
#endif

#ifndef PERL_MAGIC_uvar
#define PERL_MAGIC_uvar			  'U'
#endif

#ifndef PERL_MAGIC_uvar_elem
#define PERL_MAGIC_uvar_elem	  'u'
#endif

#ifndef PERL_MAGIC_vstring
#define PERL_MAGIC_vstring		  'V'
#endif

#ifndef PERL_MAGIC_vec
#define PERL_MAGIC_vec			  'v'
#endif

#ifndef PERL_MAGIC_utf8
#define PERL_MAGIC_utf8			  'w'
#endif

#ifndef PERL_MAGIC_substr
#define PERL_MAGIC_substr		  'x'
#endif

#ifndef PERL_MAGIC_defelem
#define PERL_MAGIC_defelem		  'y'
#endif

#ifndef PERL_MAGIC_glob
#define PERL_MAGIC_glob			  '*'
#endif

#ifndef PERL_MAGIC_arylen
#define PERL_MAGIC_arylen		  '#'
#endif

#ifndef PERL_MAGIC_pos
#define PERL_MAGIC_pos			  '.'
#endif

#ifndef PERL_MAGIC_backref
#define PERL_MAGIC_backref		  '<'
#endif

#ifndef PERL_MAGIC_ext
#define PERL_MAGIC_ext			  '~'
#endif
#endif   /* _P_P_PORTABILITY_H_ */

/* End of File ppport.h */