AutoXS 0.04

AutoXS is a Perl module that contains some scary code.<br /><br />Developer comments<br /><br />I'm not even sure it abides by the official Perl API totally. Furthermore, it's my first real XS module. It abuses some features of the XS/XSUB syntax. If you break it, you get to keep both halves.<br /><br />That being said, the purpose of this module and its plugin modules is to speed up the execution of your program at the expense of a longer startup time. AutoXS::Accessor comes with the same distribution as an example plugin.<br /><br />AuotXS plugins use the B and B::Utils modules to scan all subroutines (or methods) in the calling package for certain patterns. If a subroutine complies with such a pattern, it is replaced with an XS subroutine that has the same function.<br /><br />The XS subroutines for replacement are not compiled at runtime like Inline::C would do. They have been compiled at module build time just like any other XSUBs.<br /><br />In a simple minded test, AuotXS::Accessor sped up typical read-only accessors by a factor of 1.6 to a factor of 2.5. Your mileage may vary, of course. Keep in mind mind that accessors can sometimes be part of very tight loops.<br /><br />To get an impression of the imposed pre-runtime penalty of using AutoXS, a file containing nine methods (code shown in AutoXS::Accessor) was compiled with and without AutoXS. The test is contrived because all nine methods will be replaced. In normal code, there is much more non-accessor code which will be quickly rejected. Naturally, rejection is faster than successful matching and replacement. The compilation with AutoXS took 74ms longer than without.<br /><br />SYNOPSIS<br /><br /> package MyClass;<br /> sub blah {...}<br /> use AutoXS ':all';<br /> # if blah matches one of the patterns, it's running<br /> # as XS code now!

Requirements:	No special requirements
Platforms:	*nix, Linux
Keyword:	Accessors,  Autoxs,  Autoxsaccessor,  Compiled,  Factor,  Imposed,  Impression,  It039s,  Longer,  Methods,  Module,  Modules,  Package,  Patterns,  Penalty,  Preruntime,  Replaced,  Replacement,  Subroutine,  Subroutines
Users rating:	0/10