daemon

how to create daemon thread?

Can a java programmer can create daemon threads manually? How is it? ...

How can I prevent an error in my Perl script from terminating the script?

I have a simple Perl script which runs as a Linux daemon using an infinite loop. It connects to a database every 10 seconds to execute a process. while (1) { # THIS LINE WILL KILL THE SCRIPT IF IT FAILS my $DB=DBI->connect("dbi:Sybase:server=myserver","user","password"); . . . do something . . . sleep (10); } I have tw...

Why doesn't my program write to the file while using Proc::Daemon?

Hi guys, I write some testing code before using Proc::Daemon, what my testing code is like: #! /usr/bin/perl use strict; use warnings; use Proc::Daemon; Proc::Daemon::Init(); my $continue = 1; $SIG{TERM} = sub { $continue = 0 ; } while ( $continue ) { sleep(5) ; &greeting ; } sub greeting { open ( FH, ">>/home/daogu/foo...

Java Service Wrapper 3.2.3 on Mac OS X 64-bit

What's the best way to run an app using Java Service Wrapper 3.2.3 on Mac OS X 64-bit? sh.script.in works, but there is no macosx-universal-64 version of the wrapper native binary (on JSW's 3.2.3 downloads page anyway http://wrapper.tanukisoftware.org/downloads/3.2.3/). The result is the following error in the logs: INFO | jvm 1 ...

Tool for creating a Java daemon service on Linux

What is the best way to create a java application that can be run using ‘service’ on Linux? I was going to use the JSW available here, but cannot use the licence on that (licence is either GPL or it costs money as far as I can tell). I’d need an apache style licence. I’m using maven to build, so it would be great if it was possible to c...

Debugginng a daemon that terminates unexpectedly

I am writing a daemon in c on linux. It traps signals SIGHUP, SIGTERM, SIGINT, and SIGQUIT, logs them using syslog and quits. If it receives SIGSEGV it core dumps. When these occur everything happens as expected but once in a while it quits...does not exit cleanly, does not log the signal, and does not leave a core dump. I am stumped and...

What python modules are available to assist in daemonization in the standard library?

I have a simple python program that I'd like to daemonize. Since the point of my doing this is not to demonstrate mastery over the spawn, fork, disconnect , etc, I'd like to find a module that would make it quick and simple for me. I've been looking in the std lib, but can not seem to find anything. Is there? ...

Pass data to mailer daemon in Rails?

According to the Rails API (snippet below), the optimal way to receive mail is by creating a single Rails instance within a daemon that gets invoked by a MTA whenever new mail arrives. My question is: how do you pass data to that daemon when new mail arrives? ======================== Rails API Snippet To receive emails, you need to i...

Error while using multiprocessing module in a python daemon

I'm getting the following error when using the multiprocessing module within a python daemon process (using python-daemon): Traceback (most recent call last): File "/usr/local/lib/python2.6/atexit.py", line 24, in _run_exitfuncs func(*targs, **kargs) File "/usr/local/lib/python2.6/multiprocessing/util.py", line 262, in _exit_fu...

Ruby daemon not working

I need to run a standalone ruby script as Unix (linux) daemon. After running that daemon I need to run another Ruby method with it. I installed the ruby-daemon gem on my machine by using the gem install daemon. I did the test daemon program. My test.rb file is : module Test def test_method @s =" ITS WORKING !" f...

delayed_job not picking up the rails environment

Followed this question about delayed_job and monit Its working on my development machine. But whenever I try to run on production, it just dies with following on delayed_job.log *** Starting job worker delayed_job host:mail.welcometonewnepal.com pid:356 #<Mysql::Error: Access denied for user 'root'@'localhost' (using password: YES)> **...

What difference it makes when I set python thread as a Deamon

What difference it makes when I set python thread as a Deamon, using thread.setDaemon(True) ? ...

How to implement Daemon process for background task in iphone sdk 3.0 ?

Hi Like qik.com or ustream.com , when they upload content from iphone to server , it works via daemon . So even when out of the app with exit , the task is still on with background daemon . Is there any method that I can implement daemon process in a same way ? Thanks !!! ...

How to tell the status of a Linux Daemon

Hi, We have a Linux Daemon in c and a bash script to start it. The daemon sometimes fail to start because of some configuration file errors but the script reports the daemon was started successfully. A snippet of the script is shown as below, could someone tell me what's wrong with the script? ... case "$1" in start) echo -n "Starting ...

Executor and Daemon in Java

Hi, I have a MyThread object which I instantiate when my app is loaded through the server, I mark it as a Daemon thread and then call start() on it. The thread is meant to sit and wait for information from a queue as long as the application is active. My problem/question is this: Currently MyThread is extending Thread because I mark it a...

Is it a bad idea to write a multithreaded TCP server daemon in Perl?

Is it a bad idea to write multithreaded programs (specifically, TCP server daemons) in Perl? ...

developing a osx deamon that runs before user login using xcode.

Hi I am trying to develop a daemon using objective-C/xcode. I am new to mac world and can I get an idea of what project template to choose in xcode and how to do it. Can I get a simple and basic daemon sample source code ? ...

Threads in a J2EE application

I have a J2EE application that has two components: First is a service that scrapes some information from internet and fills it into database. Second is a web interface (deployed on tomcat) from where user can browse that information. What could be the best approach to implement the first component? Should it be run as a background Daemo...

stateful processes (daemons?) in Tomcat?

I'm not exactly sure what question to ask here since I don't know the vocabulary... Tomcat servlets (and any server for that matter) work nicely if they are stateless and respond quickly to requests, with state stored in a database. It seems like if I have long-running operations then maybe I want to run some other service in the backgr...

Daemon dies unexpectedly

I have a python script, which I daemonise using this code def daemonise(): from os import fork, setsid, umask, dup2 from sys import stdin, stdout, stderr if fork(): exit(0) umask(0) setsid() if fork(): exit(0) stdout.flush() stder...