Sequencing or queuing parallel process


Posted on 16th Feb 2014 07:03 pm by admin

Scenario is as follows
There is one parent process say P1 and 4 child processes say A B C D

Process A starts at 3:00 pm
Process B starts at 3:15 pm
Process C starts at 3:30 pm
Process D starts at 3:45 pm

Process A take 1 hour for completion and process B,C,D takes 10 mins for completion
At a time only one process is allowed to execute since these process shared some common resources so at any point of time only one process is allowed to execute. but these are scheduled job so process B, C, and D must wait till process A get completes

so process B must wait till 4:00 PM for execution
and starts at 4:00 PM
process C must start at 4:10 PM after completion of process A and B
process D must start at 4:20 PM after completion of process A and B and C
so these sequencing also should maintained

B, C and D cannot start unless and until A is get completed and user dose not know
How much time A will take so B,C and D must wait for completion of A and after A completes then and then only B,C and D execute in a same order

so how to implement wait mechanism for this scenario?

Currently i have implemented a lock mechanism where first process A will create a lock file and process B,C and D will continuously poll this lock file and as soon as process A finishes it will release a lock on and whichever process acquires a lock first will get executed first but here sequencing is not maintained and process executes randomly

so what kernel objects like event, semaphore are needed to solve this scenario.

please help to solve this scenario of process waiting for execution in a queue.

-Thanks

No comments posted yet

Your Answer:

Login to answer
342 Like 9 Dislike
Previous forums Next forums
Other forums

Include with Parameters
In a particular page I would like to include a file that requires $_GET parameters.

when I go

Email Form Syntax Issue
I need the TO: in email to display To: CEO instead of To: abc@mail.com

How to alter the scri

no idea what to do...
I'm fed up. I had issues with code that I have working on a different site that didn't work on my cu

Interpret Order
Hello all,

I'm wondering if I have this:

Code: $switch = array(
'one' =>

ASP.NET Validation Event Cycle
Hi,
I have asp button as follow:

Undefined Index Notice In Internet Explorer Only
I am getting the following notice:

QuoteNotice: Undefined index: jrox in /home/ycsn/public_h

Displaying pictures
i have worked my way through storing images in directory and storing the location in mySQL db.Now i

SOAP Issue
Hi,

I am facing some understanding problem with SOAP basic.kindly recommend some SOAP expert.

Confused with Loop
guys, i got confused with Looping...this is the case

I have 3 stocks, let say "Stock A&q

an interesting question
Greetings folks, got to ask an interesting question...

let say
i have created a function s

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



Play Free Quiz and Win Cash