Added &POE::Kernel::fork() to provide safe child reaping. This fork() uses an event loop to poll for reapable children. It fires a CHLD signal at the session that called &POE::Kernel::fork(), using POE's soft signals to avoid potential problems with Perl's signal handling.
Changed the preforkedserver.perl example to use &POE::Kernel::fork(), but the sample program seems to be hideously broken as designed.
POE's SIGCHLD handler takes over Apache's when it's used in mod_perl. Changed POE::Kernel to not register a SIGCHLD handler if it's running under mod_perl.
Added SIGIDLE, a kinder, gentler SIGZOMBIE. When an entire process becomes idle, POE broadcasts SIGIDLE to everyone. SIGIDLE is a plain terminal signal; sessions won't die if it's handled. POE checks for continued idle-ness after SIGIDLE is dispatched; if the process hasn't awakened, then SIGZOMBIE is broadcast to reap things.
Fixed names.perl to show SIGIDLE being caught.
Reordered the lookups in &POE::Kernel::alias_resolve, placing the more common ones first. Forced a look-up, even for Session references, so that it would return ESRCH errors on sessions that disappeared but were still being referenced.
Back to POE CHANGES.
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