NAME
   Apache::Reload - Reload changed modules

SYNOPSIS
   In httpd.conf:

     PerlInitHandler Apache::Reload
     PerlSetVar ReloadAll Off

   Then your module:

     package My::Apache::Module;

     use Apache::Reload;

     sub handler { ... }

     1;

DESCRIPTION
   This module is two things. First it is an adaptation of Randal
   Schwartz's Stonehenge::Reload module that attempts to be a
   little more intuitive and makes the usage easier.
   Stonehenge::Reload was written by Randal to make specific
   modules reload themselves when they changed. Unlike
   Apache::StatINC, Stonehenge::Reload only checked the change time
   of modules that registered themselves with Stonehenge::Reload,
   thus reducing stat() calls. Apache::Reload also offers the exact
   same functionality as Apache::StatINC, and is thus designed to
   be a drop-in replacement. Apache::Reload only checks modules
   that register themselves with Apache::Reload if you explicitly
   turn off the StatINC emulation method (see below). Like
   Apache::StatINC, Apache::Reload must be installed as an Init
   Handler.

 StatINC Replacement

   To use as a StatINC replacement, simply add the following
   configuration to your httpd.conf:

     PerlInitHandler Apache::Reload

 Register Modules Implicitly

   To only reload modules that have registered with Apache::Reload,
   add the following to the httpd.conf:

     PerlInitHandler Apache::Reload
     PerlSetVar ReloadAll Off
     # ReloadAll defaults to On

   Then any modules with the line:

     use Apache::Reload;

   Will be reloaded when they change.

 Register Modules Explicitly

   You can also register modules explicitly in your httpd.conf file
   that you want to be reloaded on change:

     PerlInitHandler Apache::Reload
     PerlSetVar ReloadAll Off
     PerlSetVar ReloadModules "My::Foo My::Bar Foo::Bar::Test"

   Note that these are split on whitespace, but the module list
   must be in quotes, otherwise Apache tries to parse the parameter
   list.

 Special "Touch" File

   You can also set a file that you can touch() that causes the
   reloads to be performed. If you set this, and don't touch() the
   file, the reloads don't happen. This can be a great boon in a
   live environment:

     PerlSetVar ReloadTouchFile /tmp/reload_modules

   Now when you're happy with your changes, simply go to the
   command line and type:

     touch /tmp/reload_modules

   And your modules will be magically reloaded on the next request.
   This option works in both StatINC emulation mode and the
   registered modules mode.

PSUEDOHASHES
   The short summary of this is: Don't use psuedohashes. Use an
   array with constant indexes. Its faster in the general case, its
   more guaranteed, and generally, it works.

   The long summary is that I've done some work to get this working
   with modules that use psuedo hashes, but its still broken in the
   case of a single module that contains multiple packages that all
   use psuedohashes.

   So don't do that.

AUTHOR
   Matt Sergeant, [email protected]

MAINTAINERS

the mod_perl developers, [email protected]

SEE ALSO
   Apache::StatINC, Stonehenge::Reload