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How it works

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The two main Tymeac elements are Queues and Functions.

Queues are:

  • Individual user-written application programs that execute as "linked to" code from an asynchronous task.
  • The Wait Lists of pending requests
  • The logical anchor points for asynchronous tasks with create/destroy options of:
    • Created at Tymeac startup or
    • created when first required.
    • Destroyed after an idle period or
    • never destroyed.
  • The threshold variables for activating a new asynchronous task

Functions are lists of Queues.


red_triangle.gif (857 bytes)  The Client application passes a request to Tymeac to get the job done (a Tymeac Function).

red_triangle.gif (857 bytes)  Tymeac schedules the request on the Tymeac Queues necessary to complete the job.

An asynchronous task on each Queue Links to invoke the user-written application program for the Queue.

For synchronous requests, Tymeac waits until all processing completes and returns the results of all the processes to the Client.

For asynchronous requests, Tymeac returns immediately to the Client. (This is sometimes known as background or back-end processing.)

Optionally, when the last Queue Task process completes, it schedules an Output Agent Queue that may further process the results of all the prior processes or pass the results to the network. [ example ]

Many more requests may be active then there are threads to process them. Tymeac provides a system of prioritized Wait Lists for each Queue.

Balancing

Synchronous task processing does not provide any control over the queue of requests, the ability to view the queue, or to change priority. Most importantly, there is no facility to control the number of asynchronous tasks active at any one time.

 Tymeac provides designers the tools necessary to balance the asynchronous task load.

  • Each Queue may have as many asynchronous tasks as are prudent and necessary as a maximum.
  • When to activate a new asynchronous task is always the major issue. Tymeac analyzes four thresholds to give designers almost unlimited control over this parameter for each Queue. [example]
  • User parameters control when to create a physical asynchronous task (at Tymeac start up or when first needed), and when to destroy the physical asynchronous task (after an idle period or never.)
  • Threshold and Wait List variables are alterable during execution providing a dynamic response to an ever changing environment.

Tymeac is a trademark of Cooperative Software Systems, Inc

   

1998 - 2006 Cooperative Software Systems, Inc.  All rights reserved.