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Top Forums Programming Problem with timely execution of threads... Post 302587739 by 14341 on Thursday 5th of January 2012 09:47:28 PM
Old 01-05-2012
MySQL Problem with timely execution of threads...

Hi Guys,

We are having one multi-threaded application.

The scenario is as follows:

--------------------------------- Client 1
|
APP Server -------------- Client 2
|
---------------------------------- Client 3

App Server is feeding all the clients.

One particular process (within client) has to be run for each minute. Based on the result of the process one value will be displayed on the client.

At starting all the clients have same value (above mentioned).
After starting the clients, the function invocation for each minute is also happening correctly (found by debugging).

The (timed)function is executed using the threads.
The issue is after the function invocation.....in each client....the threads are executing at different times and hence the (display) count on each client is not matching.

Is there any way/method to make sure that threads (in different clients) execute at the same time ?
or
Is there any other alternate way to efficiently handle this kind of scenario?

App Server
is one machine and all the Clients are on another machine.

We are using RHEL - 5.4.

Any help would be greatly appreciated.


Thanks,
14341

Last edited by 14341; 01-05-2012 at 10:51 PM.. Reason: Format is not proper
 

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Server::Relay(3pm)					User Contributed Perl Documentation					Server::Relay(3pm)

NAME
Net::SMTP::Server::Relay - A simple relay module for Net::SMTP::Server. SYNOPSIS
use Carp; use Net::SMTP::Server; use Net::SMTP::Server::Client; use Net::SMTP::Server::Relay; $server = new Net::SMTP::Server('localhost', 25) || croak("Unable to handle client connection: $! "); while($conn = $server->accept()) { # We can perform all sorts of checks here for spammers, ACLs, # and other useful stuff to check on a connection. # Handle the client's connection and spawn off a new parser. # This can/should be a fork() or a new thread, # but for simplicity... my $client = new Net::SMTP::Server::Client($conn) || croak("Unable to handle client connection: $! "); # Process the client. This command will block until # the connecting client completes the SMTP transaction. $client->process || next; # In this simple server, we're just relaying everything # to a server. If a real server were implemented, you # could save email to a file, or perform various other # actions on it here. my $relay = new Net::SMTP::Server::Relay($client->{FROM}, $client->{TO}, $client->{MSG}); } DESCRIPTION
The Net::SMTP::Server::Relay module implements simple SMTP relaying for use with the Net::SMTP::Server module. All this module does is to take a given message and iterate through the list of recipients, doing DNS lookups for the associated MX record and delivering the messages. This module makes extensive use of the plethora of other modules already implemented for Perl (specifically the DNS and Net::SMTP modules in this case), and should give but a glimpse of the potential for extending the Net::SMTP::Server's functionality to provide a full-featured SMTP server, native to Perl. The above example illustrates the use of the Net::SMTP::Server::Relay modules -- you simply have to instantiate the module, passing along the sender, recipients, and message. More formally: $relay = new Net::SMTP::Server::Relay($from, @to, $msg); Where $from is the sender, @to is an array containing the list of recipients, and $msg is the message to relay. AUTHOR AND COPYRIGHT Net::SMTP::Server / SMTP::Server is Copyright(C) 1999, MacGyver (aka Habeeb J. Dihu) <macgyver@tos.net>. ALL RIGHTS RESERVED. You may distribute this package under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file. SEE ALSO
Net::SMTP::Server::Server, Net::SMTP::Server::Client perl v5.10.1 1999-12-28 Server::Relay(3pm)
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