Linux Manual Pages

Free Software * Books

Source Code

Free Media

Linux

Net::Server::Fork

NAME
SYNOPSIS
DESCRIPTION
ARGUMENTS
CONFIGURATION FILE
PROCESS FLOW
HOOKS
TO DO
AUTHOR
SEE ALSO

NAME

Net::Server::Fork − Net::Server personality

SYNOPSIS

  use Net::Server::Fork;
  @ISA = qw(Net::Server::Fork);
  sub process_request {
     #...code...
  }
  __PACKAGE__−>run();

DESCRIPTION

Please read the pod on Net::Server first. This module is a personality, or extension, or sub class, of the Net::Server module.

This personality binds to one or more ports and then waits for a client connection. When a connection is received, the server forks a child. The child handles the request and then closes.

With the exception of parent/child signaling, this module will work (with basic functionality) on Win32 systems.

ARGUMENTS

check_for_dead

Number of seconds to wait before looking for dead children. This only takes place if the maximum number of child processes (max_servers) has been reached. Default is 60 seconds.

max_servers

The maximum number of children to fork. The server will not accept connections until there are free children. Default is 256 children.

max_dequeue

The maximum number of dequeue processes to start. If a value of zero or undef is given, no dequeue processes will be started. The number of running dequeue processes will be checked by the check_for_dead variable.

check_for_dequeue

Seconds to wait before forking off a dequeue process. It is intended to use the dequeue process to take care of items such as mail queues. If a value of undef is given, no dequeue processes will be started.

CONFIGURATION FILE

See Net::Server.

PROCESS FLOW

Process flow follows Net::Server until the post_accept phase. At this point a child is forked. The parent is immediately able to wait for another request. The child handles the request and then exits.

HOOKS

The Fork server has the following hooks in addition to the hooks provided by the Net::Server base class. See Net::Server
"$self−>pre_accept_hook()"

This hook occurs just before the accept is called.

"$self−>pre_fork_hook()"

This hook occurs just after accept but before the fork.

"$self−>post_accept_hook()"

This hook occurs in the child after the accept and fork.

"$self−>run_dequeue()"

This hook only gets called in conjuction with the check_for_dequeue setting.

TO DO

See Net::Server

AUTHOR

Paul Seamons <paul@seamons.com>

Rob Brown <bbb@cpan.org>

Opportunity

Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.

Education

Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.