Click here to Skip to main content
Click here to Skip to main content
Go to top

A Thread Pool compatible with Win32 and pthreads API

, 9 Apr 2008
Rate this:
Please Sign up or sign in to vote.
A cross-platform thread pooling implementation

Introduction

I had a requirement to create a server that could run on Windows and Linux platforms. One of the basic requirements of the server was an efficient thread-pooling scheme. I came across the pthreads API. I already had a thread pooling scheme that used IO Completion ports. Using a few defines and pre-processor directives, I changed the existing thread pool to support the pthread library. I have NOT compiled this on Linux yet.

Requirements:

It uses the STL containers vector and deque.

It also uses the for_each STL algorithm.
The classes themselves do not use MFC, but the demo app is created using MFC Single Document App-Wizard.
Requires pthreads library on non-Win32 platforms.

To Use

To use the native Win32 API, comment the line:

#include <span class="code-keyword"><pthread/pthread.h&></span>

in the header file 'defines.h'.

Step 1: Include the header file thread.h.

Step 2: Derive a class CMyJob from ThreadJob and implement the 'execute' virtual function. After the job to be done in the thread is complete, do not forget to call the 'execute' function of the base class.

Step 3: In the application's initialization, call

CThread::get_threadpool().start(num);

This creates the threads and waits on them.

Step 4: When you have a job to be queued on the pool,

CMyJob* pjob = new CMyJob
// initialize pjob

CThread::get_threadpool().add_job(pjob);

The thread pool executes the job and after the job is completed, CMyJob deletes itself.

Step 5: When the application quits, call

CThread::get_threadpool().stop();

This prevents any more jobs being queued, deletes pending jobs, stops the threads and then returns.

You can obtain the pthreads library from ftp://sources.redhat.com/pub/pthreads-win32/dll-latest to test with pthreads.

In my tests, pthreads on Win32 was a fraction slower than the Win32. This could be because pthreads on Win32 is a wrapper over the native Win32 threads API.

Please send any suggestions to improve this class.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Share

About the Author

No Biography provided

Comments and Discussions

 
QuestionThere are 2 bugs ? PinmemberI-BIRD8-Jun-09 6:43 
GeneralFor linux compiling ( information ) PinmemberI-BIRD27-Apr-09 5:13 
Generalwhen compiling win vs express 8 geting compilation error Pinmemberumen24214-Oct-08 11:52 
GeneralRe: when compiling win vs express 8 geting compilation error Pinmemberumen24216-Oct-08 2:41 
GeneralTesting PinmvpJeffrey Walton10-Apr-08 5:19 
GeneralRe: Testing PinmemberThomas George10-Apr-08 5:27 
GeneralProblem with g++ &gt; 4.2 Pinmemberleso035-Mar-08 20:29 
Generalpthread code should use a global mutex on the condition Pinmemberpaul@elphin.com6-Jan-05 22:56 
QuestionWho have used zThread library on win32 platform(VC++ 6.0)? Pinmemberkimy1-Dec-02 19:53 
QuestionDo I have to create a "pthreadVC.lib" folder? PinmemberWREY18-Jul-02 11:39 
AnswerRe: Do I have to create a "pthreadVC.lib" folder? PinmemberThomas George20-Jul-02 9:23 
GeneralRe: Do I have to create a "pthreadVC.lib" folder? PinmemberWREY20-Jul-02 10:34 
GeneralRe: Do I have to create a "pthreadVC.lib" folder? PinmemberRicky Chow9-Mar-03 20:06 
GeneralRe: Do I have to create a "pthreadVC.lib" folder? PinmemberWREY10-Mar-03 5:08 
QuestionDeleted twice!? PinmemberAnonymous13-May-02 5:02 
AnswerRe: Deleted twice!? PinmemberThomas George20-Jul-02 9:20 
GeneralQuestion from my ignorance PinmemberTim Smith3-Mar-02 5:15 
GeneralRe: Question from my ignorance PinmemberThomas George3-Mar-02 5:24 
GeneralRe: Question from my ignorance PinmemberTim Smith3-Mar-02 5:44 
GeneralRe: Question from my ignorance PinmemberThomas George3-Mar-02 5:54 
GeneralRe: Question from my ignorance PinmemberTim Smith3-Mar-02 7:55 
GeneralRe: Question from my ignorance PinmemberThomas George3-Mar-02 8:35 
GeneralRe: Question from my ignorance PinmemberTim Smith3-Mar-02 8:56 
GeneralRe: Question from my ignorance PinmemberAnonymous4-Mar-02 10:24 
GeneralRe: Question from my ignorance PinmemberTim Smith4-Mar-02 10:32 
GeneralRe: Question from my ignorance PinmemberAnonymous4-Mar-02 10:53 
GeneralRe: Question from my ignorance PinmemberThomas George5-Mar-02 3:13 
GeneralRe: Question from my ignorance PinmemberWilliam E. Kempf5-Mar-02 3:46 
GeneralRe: Question from my ignorance PinmemberThomas George5-Mar-02 7:11 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

| Advertise | Privacy | Mobile
Web01 | 2.8.140926.1 | Last Updated 9 Apr 2008
Article Copyright 2002 by Thomas George
Everything else Copyright © CodeProject, 1999-2014
Terms of Service
Layout: fixed | fluid