Solved

Inter process communication

Posted on 1999-01-06
3
188 Views
Last Modified: 2013-12-26
I am working on project which require porting of Win-NT code on Mac. I am using Metrowoks CodeWarrior. It's pure C++ code.
The problem is that I need to perform Multithreading and the the two threads need to communicate with each other since they are sharing the same resource i.e. data buffer. Can anyone suggest me the way to perform this communication (something like Mutex objects in Windows)?
0
Comment
Question by:deep_blue
  • 2
3 Comments
 
LVL 3

Accepted Solution

by:
boonstra earned 50 total points
ID: 1291699
I don't know of a direct port for Mutex, but two things you want to look at are the Thread Manager and the Event Manager.  The Thread Manager handles thread creation, scheduling, and critical sections.  The SDK, including documentation, and sample code are provided at:
  <http://developer.apple.com/techpubs/macos8/OSSvcs/ThreadManager/threadmanager.html>

Interprocess communication is handled by the Apple Event Manager.  Documentation and sample code are at:
<http://developer.apple.com/techpubs/macos8/InterproCom/AppelEventManager/appleeventmanager.html>
Although most often used for interapplication communication, it can also be used to communicate between threads within an application.

If you don't want to use Apple Events, you can certainly use a shared memory area protected by a semaphore to do the interthread communications.
0
 

Author Comment

by:deep_blue
ID: 1291700
Thank you for answer can you find any sample code for using AppleEvents for InterProcess communication since the the URL suggested by you talks about InterApplication Communication
0
 
LVL 3

Expert Comment

by:boonstra
ID: 1291701
I didn't find any sample code using Apple Events for inter-thread communication.  I could probably write one, but not for 50 points.  :-)

However, the process for sending and processing Apple Events is largely the same for intraapplication communication; you simply specify yourself as the target.  See Inside Macintosh: Interapplication Communication, pg 5-10.  (IM:IAC is available at <http://developer.apple.com/techpubs/mac/IAC/IAC-2.html>

For sample code using shared memory and semaphores and/or critical sections to communicate between threads, see the examples in the Thread Manager SDK, including the Dining Philosophers example and the Single Intersection example.

Hope this helps.
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
MFC Dialog 9 51
Window placement 17 87
fix34  challenge 9 144
x-bar in Google Sheets 2 72
Introduction: Database storage, where is the exe actually on the disc? Playing a game selected randomly (how to generate random numbers).  Error trapping with try..catch to help the code run even if something goes wrong. Continuing from the seve…
Introduction: Dialogs (2) modeless dialog and a worker thread.  Handling data shared between threads.  Recursive functions. Continuing from the tenth article about sudoku.   Last article we worked with a modal dialog to help maintain informat…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

830 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question