Multi Tasking Environment

Multi tasking exploits parallelism by:

1)  Concurrently using the multiple functional units

2)  Pipelining functional units are pipe line together

3)  Overlapping CPU and I/O activities.

In multitasking environment, there should be a proper mix among task and data structures of a job, in order to make sure their proper parallel implementation.

In multitasking, the useful code of a programme can be use again. The property of allowing one copy of a programme module to be used by more than task in parallel is known as reentrancy.  Non-reentrant code can be used only once throughout lifetime of the programme. The reentrant codes, which may be called many times by dissimilar tasks, are assigned with local variables.

 

Posted Date: 3/4/2013 5:36:02 AM | Location : United States

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