Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister
 
PerlMonks  

Re: using fork

by jethro (Monsignor)
on Oct 14, 2013 at 16:06 UTC ( #1058196=note: print w/ replies, xml ) Need Help??


in reply to using fork

Are you sure you need fork at all? If you don't have anything to do while the backup process is doing its thing or you don't need the separate process as a safety feature (for example to check if the process completed) then you don't need it.

If yes, the layout of your script depends also on why you need it. I'll just assume you need it for the latter reason, i.e. to monitor execution.

Then the backup script goes where "sleep 30" is at the moment. Then either duplicate and append the whole script for the next command or if there are more than two or a variable number of commands put this whole script into a loop. Also you need a noblocking version of waitpid so that you really can monitor the child process instead of hanging indefinitely. See the documentation to waitpid

Now if you want more comfort you should take a look at some of the powerful modules that handle all the details of forking, for example Parallel::ForkManager


Comment on Re: using fork

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1058196]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others making s'mores by the fire in the courtyard of the Monastery: (10)
As of 2014-09-19 12:24 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    How do you remember the number of days in each month?











    Results (137 votes), past polls