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8.3

Boss Thread and worker threads communication

Asked by jaja2005 in Delphi Components, Delphi Programming

Tags: Delphi 2006

Question: Hi. In my main application (main VCL) I want to develop a single boss
thread which:

A: is able to communicate with worker threads
B: is able to update some VCL componets properties into main VCL basing
on the worker thread results.
C: create the worker thread and limit the number of it using a semaphore

Worker threads are I/O operation. They do some test, create a sort of
array of boolean based on the test performed and store into a shared
buffer (es. TthreadList).

The approach I would like to use is the one of producer/consumer.

So the sequence should be:

- The boss spaws some worker threads
- The workers threads do some test and create a result as [TRUE,FALSE,FALSE...]
  with a size that is dynamic.

- the worker thread store it into a shared buffer, protected with Critical Section.

- The boss thread wakes up or wait to access to the buffer. When it does it
will update the propreties in the main VCL


I want to develop this structure without using Syncronize and above all

limiting the buffer size and taking care of flow control between boss an
workers.
 
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Zones: Delphi Components, Delphi Programming
Tags: Delphi 2006
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Solution Provided By: Geert_Gruwez
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