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.IX Title "FCGI::Engine::ProcManager 3pm"
.TH FCGI::Engine::ProcManager 3pm "2022-12-10" "perl v5.36.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
FCGI::Engine::ProcManager \- module for managing FastCGI applications.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module is a refactoring of FCGI::ProcManager, it behaves exactly the
same, but the \s-1API\s0 is a little different. The function-oriented \s-1API\s0 has been
removed in favor of object-oriented \s-1API.\s0 The \f(CW\*(C`pm_\*(C'\fR prefix has been removed
from  the hook routines and instead they now use the \f(CW\*(C`augment\*(C'\fR and \f(CW\*(C`inner\*(C'\fR
functionality from Moose. More docs will come eventually.
.SS "Signal Handling"
.IX Subsection "Signal Handling"
FCGI::Engine::ProcManager attempts to do the right thing for proper shutdowns.
.PP
When it receives a \s-1SIGHUP,\s0 it sends a \s-1SIGTERM\s0 to each of its children, and
then resumes its normal operations.
.PP
When it receives a \s-1SIGTERM,\s0 it sends a \s-1SIGTERM\s0 to each of its children, sets
an \fBalarm\fR\|(3) \*(L"die timeout\*(R" handler, and waits for each of its children to
die.  If all children die before this timeout, process manager exits with
return status 0.  If all children do not die by the time the \*(L"die timeout\*(R"
occurs, the process manager sends a \s-1SIGKILL\s0 to each of the remaining
children, and exists with return status 1.
.PP
FCGI::Engine::ProcManager uses \fBPOSIX::sigaction()\fR to override the default
\&\s-1SA_RESTART\s0 policy used for perl's \f(CW%SIG\fR behavior.  Specifically, the process
manager never uses \s-1SA_RESTART,\s0 while the child FastCGI servers turn off
\&\s-1SA_RESTART\s0 around the accept loop, but re-enstate it otherwise.
.PP
The desired (and implemented) effect is to give a request as big a chance as
possible to succeed and to delay their exits until after their request,
while allowing the FastCGI servers waiting for new requests to die right
away.
.SH "METHODS"
.IX Header "METHODS"
I will fill this in more eventually, but for now if you really wanna know,
read the source.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
.IP "FCGI::ProcManager" 4
.IX Item "FCGI::ProcManager"
This module is a fork of the FCGI::ProcManager code, with lots of
code cleanup as well as general Moosificaition.
.SH "BUGS"
.IX Header "BUGS"
All complex software has bugs lurking in it, and this module is no
exception. If you find a bug please either email me, or add the bug
to cpan-RT.
.SH "AUTHOR"
.IX Header "AUTHOR"
Stevan Little <stevan@iinteractive.com>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
Copyright 2007\-2010 by Infinity Interactive, Inc.
.PP
<http://www.iinteractive.com>
.PP
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.