svrefcnt

来自「source of perl for linux application,」· 代码 · 共 131 行

################################################################################
##
##  $Revision: 2 $
##  $Author: mhx $
##  $Date: 2007/01/02 12:32:28 +0100 $
##
################################################################################
##
##  Version 3.x, Copyright (C) 2004-2007, Marcus Holland-Moritz.
##  Version 2.x, Copyright (C) 2001, Paul Marquess.
##  Version 1.x, Copyright (C) 1999, Kenneth Albanowski.
##
##  This program is free software; you can redistribute it and/or
##  modify it under the same terms as Perl itself.
##
################################################################################

=provides

SvREFCNT_inc
SvREFCNT_inc_simple
SvREFCNT_inc_NN
SvREFCNT_inc_void
__UNDEFINED__

=implementation

#ifndef SvREFCNT_inc
#  ifdef PERL_USE_GCC_BRACE_GROUPS
#    define SvREFCNT_inc(sv)		\
      ({				\
          SV * const _sv = (SV*)(sv);	\
          if (_sv)			\
               (SvREFCNT(_sv))++;	\
          _sv;				\
      })
#  else
#    define SvREFCNT_inc(sv)	\
          ((PL_Sv=(SV*)(sv)) ? (++(SvREFCNT(PL_Sv)),PL_Sv) : NULL)
#  endif
#endif

#ifndef SvREFCNT_inc_simple
#  ifdef PERL_USE_GCC_BRACE_GROUPS
#    define SvREFCNT_inc_simple(sv)	\
      ({					\
          if (sv)				\
               (SvREFCNT(sv))++;		\
          (SV *)(sv);				\
      })
#  else
#    define SvREFCNT_inc_simple(sv) \
          ((sv) ? (SvREFCNT(sv)++,(SV*)(sv)) : NULL)
#  endif
#endif

#ifndef SvREFCNT_inc_NN
#  ifdef PERL_USE_GCC_BRACE_GROUPS
#    define SvREFCNT_inc_NN(sv)		\
      ({					\
          SV * const _sv = (SV*)(sv);	\
          SvREFCNT(_sv)++;		\
          _sv;				\
      })
#  else
#    define SvREFCNT_inc_NN(sv) \
          (PL_Sv=(SV*)(sv),++(SvREFCNT(PL_Sv)),PL_Sv)
#  endif
#endif

#ifndef SvREFCNT_inc_void
#  ifdef PERL_USE_GCC_BRACE_GROUPS
#    define SvREFCNT_inc_void(sv)		\
      ({					\
          SV * const _sv = (SV*)(sv);	\
          if (_sv)			\
              (void)(SvREFCNT(_sv)++);	\
      })
#  else
#    define SvREFCNT_inc_void(sv) \
          (void)((PL_Sv=(SV*)(sv)) ? ++(SvREFCNT(PL_Sv)) : 0)
#  endif
#endif

__UNDEFINED__  SvREFCNT_inc_simple_void(sv)	STMT_START { if (sv) SvREFCNT(sv)++; } STMT_END
__UNDEFINED__  SvREFCNT_inc_simple_NN(sv)	(++SvREFCNT(sv), (SV*)(sv))
__UNDEFINED__  SvREFCNT_inc_void_NN(sv)		(void)(++SvREFCNT((SV*)(sv)))
__UNDEFINED__  SvREFCNT_inc_simple_void_NN(sv)	(void)(++SvREFCNT((SV*)(sv)))

=xsubs

void
SvREFCNT()
	PREINIT:
		SV *sv, *svr;
	PPCODE:
		sv = newSV(0);
		XPUSHs(newSViv(SvREFCNT(sv) == 1));
		svr = SvREFCNT_inc(sv);
		XPUSHs(newSViv(sv == svr));
		XPUSHs(newSViv(SvREFCNT(sv) == 2));
		svr = SvREFCNT_inc_simple(sv);
		XPUSHs(newSViv(sv == svr));
		XPUSHs(newSViv(SvREFCNT(sv) == 3));
		svr = SvREFCNT_inc_NN(sv);
		XPUSHs(newSViv(sv == svr));
		XPUSHs(newSViv(SvREFCNT(sv) == 4));
		svr = SvREFCNT_inc_simple_NN(sv);
		XPUSHs(newSViv(sv == svr));
		XPUSHs(newSViv(SvREFCNT(sv) == 5));
		SvREFCNT_inc_void(sv);
		XPUSHs(newSViv(SvREFCNT(sv) == 6));
		SvREFCNT_inc_simple_void(sv);
		XPUSHs(newSViv(SvREFCNT(sv) == 7));
		SvREFCNT_inc_void_NN(sv);
		XPUSHs(newSViv(SvREFCNT(sv) == 8));
		SvREFCNT_inc_simple_void_NN(sv);
		XPUSHs(newSViv(SvREFCNT(sv) == 9));
		while (SvREFCNT(sv) > 1)
		  SvREFCNT_dec(sv);
		XPUSHs(newSViv(SvREFCNT(sv) == 1));
		SvREFCNT_dec(sv);
		XSRETURN(14);

=tests plan => 14

for (Devel::PPPort::SvREFCNT()) {
  ok(defined $_ and $_);
}