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Variables created by xsubpp and xsubpp internal functions

ax

Variable which is setup by xsubpp to indicate the stack base offset, used by the ST, XSprePUSH and XSRETURN macros. The dMARK macro must be called prior to setup the MARK variable.

 

I32 ax

CLASS

Variable which is setup by xsubpp to indicate the class name for a C++ XS constructor. This is always a char*. See THIS.

 

char* CLASS

dAX

Sets up the ax variable. This is usually handled automatically by xsubpp by calling dXSARGS.

 

dAX;

dITEMS

Sets up the items variable. This is usually handled automatically by xsubpp by calling dXSARGS.

 

dITEMS;

dXSARGS

Sets up stack and mark pointers for an XSUB, calling dSP and dMARK. Sets up the ax and items variables by calling dAX and dITEMS. This is usually handled automatically by xsubpp.

 

dXSARGS;

dXSI32

Sets up the ix variable for an XSUB which has aliases. This is usually handled automatically by xsubpp.

 

dXSI32;

items

Variable which is setup by xsubpp to indicate the number of items on the stack. See perlxs/"Variable-length Parameter Lists".

 

I32 items

ix

Variable which is setup by xsubpp to indicate which of an XSUB's aliases was used to invoke it. See perlxs/"The ALIAS: Keyword".

 

I32 ix

newXSproto

Used by xsubpp to hook up XSUBs as Perl subs. Adds Perl prototypes to the subs.

RETVAL

Variable which is setup by xsubpp to hold the return value for an XSUB. This is always the proper type for the XSUB. See perlxs/"The RETVAL Variable".

 

(whatever) RETVAL

ST

Used to access elements on the XSUB's stack.

 

SV* ST(int ix)

THIS

Variable which is setup by xsubpp to designate the object in a C++ XSUB. This is always the proper type for the C++ object. See CLASS and perlxs/"Using XS With C++".

 

(whatever) THIS

XS

Macro to declare an XSUB and its C parameter list. This is handled by xsubpp.

XSRETURN_EMPTY

Return an empty list from an XSUB immediately.

 

XSRETURN_EMPTY;

XS_VERSION

The version identifier for an XS module. This is usually handled automatically by ExtUtils::MakeMaker. See XS_VERSION_BOOTCHECK.

XS_VERSION_BOOTCHECK

Macro to verify that a PM module's $VERSION variable matches the XS module's XS_VERSION variable. This is usually handled automatically by xsubpp. See perlxs/"The VERSIONCHECK: Keyword".

 

XS_VERSION_BOOTCHECK;

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