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Threadpool with priorities version 1.5 (stable version) has been ported to Delphi XE-XE4.

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Hello,

Threadpool with priorities version 1.5 (stable version) has been ported 
to Delphi XE-XE4, i have included the 32 bit and 64 bit memory managers 
, that scales on multicores , inside the zip file.


Author: Amine Moulay Ramdane


Language: FPC Pascal v2.2.0+ / Delphi 5+: http://www.freepascal.org/

Operating Systems: Win , Linux and Mac (x86).


Description:

Thread Pool Engine.

The following have been added:

- You can give the following priorities to jobs:

LOW_PRIORITY
NORMAL_PRIORITY
HIGH_PRIORITY

- A lock-free queue for each worker thread and it uses work-stealing - 
for more efficiency -

- Enters in a wait state when there is no job in the queue - for more 
efficiency -

- You can distribute your jobs to the workers threads and call any 
method with the threadpool's execute() method.

- Uses O(1) complexity on enqueue and O(3) worst case complexity  on 
dequeue.

Look into defines.inc there is many options:

CPU32: for 32 bits architecture
CPU64: for 64 bits architecture

Please read an article that i wrote about my Threadpool engine: article.

Look at test1.pas example inside the zip file, to show you how to use 
PThreadpool engine as a scalable priority MPMC FIFO queue, with this 
same method  you can implement a  scalable priority MPMC FIFO queue 
(note: the exec() method is scalable, but execute() method is not 
scalable as the exec() method).

Required FPC switches: -O3 -Sd -dFPC -dWin32 -dFreePascal

-Sd for delphi mode....

Required Delphi switches: -DMSWINDOWS -$H+

For Delphi 5,6,7 use -DDelphi

For Delphi 2005,2006,2007,2009,2010+ use the switch -DDELPHI2005+


Please look at the examples test.pas,testpool.pas and test_thread.pas...

Note: testpool.pas is a parallel program of a Matrix multiply by a 
vector that uses SSE+ and it requires Delphi 5+. test.pas and 
test_thread.pas works with both FreePascal and Delphi.


You can dowload Threadpool 1.5 from:

http://pages.videotron.com/aminer/



Thank you,
Amine Moulay Ramdane.

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Threadpool with priorities version 1.5 (stable version) has been ported to Delphi XE-XE4. aminer <aminer@toto.net> - 2013-07-01 19:41 -0700

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