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synchronizing

Posted on 1998-10-27
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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
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Question by:sunraj
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2 Comments
 
LVL 12

Accepted Solution

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rwilson032697 earned 300 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

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