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CentOS 2.1AS(Slurm) |
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Apache::StatINC(3pm) |
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Apache::StatINC − Reload %INC files when updated on disk
#httpd.conf or some such #can be any Perl*Handler PerlInitHandler Apache::StatINC
When Perl pulls a file via "require", it stores the filename in the global hash "%INC". The next time Perl tries to "require" the same file, it sees the file in "%INC" and does not reload from disk. This module’s handler iterates over "%INC" and reloads the file if it has changed on disk.
Note that StatINC operates on the current context of "@INC". Which means, when called as a Perl*Handler it will not see "@INC" paths added or removed by Apache::Registry scripts, as the value of "@INC" is saved on server startup and restored to that value after each request. In other words, if you want StatINC to work with modules that live in custom "@INC" paths, you should modify "@INC" when the server is started. Besides, ’use lib’ in startup scripts, you can also set the PERL5LIB variable in the httpd’s environment to include any non-standard ’lib’ directories that you choose. For example, you might use a script called ’start_httpd’ to start apache, and include a line like this:
PERL5LIB=/usr/local/foo/myperllibs; export PERL5LIB
When you have problems with modules not being reloaded, please refer to the following lines in ’perlmodlib’:
"Always use −w. Try to "use strict;" (or "use strict qw(...);"). Remember that you can add "no strict qw(...);" to individual blocks of code that need less strictness. Always use −w. Always use −w! Follow the guidelines in the perlstyle(1) manual."
Warnings when running under mod_perl is enabled with ’PerlWarn On’ in your httpd.conf.
It will most likely help you to find the problem. Really.
StatINC_UndefOnReload
Normally, StatINC will turn of warnings to avoid "Subroutine redefined" warnings when it reloads a file. However, this does not disable the Perl mandatory warning when re-defining "constant" subroutines (see perldoc perlsub). With this option On, StatINC will invoke the Apache::Symbol undef_functions method to avoid these mandatory warnings:
PerlSetVar StatINC_UndefOnReload On
StatINC_Debug
You can make StatINC tell when it reloads a module by setting this option to on.
PerlSetVar StatINC_Debug 1
The only used debug level is currently 1.
mod_perl(3)
Currently maintained by Ask Bjoern Hansen <ask@netcetera.dk>. Written by Doug MacEachern.
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Apache::StatINC(3pm) | |