Solved

synchronizing

Posted on 1998-10-27
2
209 Views
Last Modified: 2013-11-20
hi, regards!
I am using VC++ Document file called coninfo.rec to store
some configuration information. i used cmapstringtoob classes to serialzie information. I am using 2 different threads in my application. I had a function which access this document information. Those 2 threads may access this function. In order to avoid this function been called by a thread when other  one is using it, please help me how to synchronize. Will the critical section methods apply ?

the function name is Proccess_Query(.....)

the to other thread routines that calls this function is
threadfunc1(....) & threadfunc2(...)

Kindly give the detailed reply. I can increase the points
for convincing answers.

thanks!
r sundar r
0
Comment
Question by:sunraj
  • 2
2 Comments
 
LVL 12

Accepted Solution

by:
rwilson032697 earned 150 total points
ID: 1323931
In you function that both can call do this

{
LPCRITICAL_SECTION lpCriticalSection;

EnterCriticalSection(&lpCriticalSection);

// Do your stuff here

LeaveCriticalSection(&lpCriticalSection);
}

If one thread is already in the critical section the other will wait until it leaves it before entering.

Cheers,

Raymond.
0
 
LVL 12

Expert Comment

by:rwilson032697
ID: 1323932
Sunraj,

I just realised that lpCriticalSection is already a pointer. You will need to change the declaration so that it is a critical section structure rather than a pointer.

Cheers,

Raymond.
0

Featured Post

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

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 49
Decoding 32 bit binary streams 6 42
repeatSeparator  java  challenge 13 57
How to convert MFC::CString to UTF8 wchar_t* 10 207
In this article, I'll describe -- and show pictures of -- some of the significant additions that have been made available to programmers in the MFC Feature Pack for Visual C++ 2008.  These same feature are in the MFC libraries that come with Visual …
Introduction: The undo support, implementing a stack. Continuing from the eigth article about sudoku.   We need a mechanism to keep track of the digits entered so as to implement an undo mechanism.  This should be a ‘Last In First Out’ collec…
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.
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

770 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