Need help with Multythreads!

[Irina_br]

Hello, everyone!

I have a problem I don't know how to fix.
I need to create a few threads in a loop sending different arguments in there. Here is a simple version of my code:

for(i = 0; i < lSize; i++)
{
rsPtr = (CEntryTable*)tableArray.GetAt(i);
rs = *rsPtr;
arglist.pRs = pRs;
arglist.pCn = pCn;
arglist.rs = rs;
CreateThread(NULL, 0, BounceProc, (void*)&arglist, 0, NULL);
}




I have 3 entries, so BounceProc is supposed to be called 3 times each time with different arguments. But in reality it receives the last entry all 3 times.I understand it happens because the loop executes too fast, it worked when I put Sleep() after CreateThread(). Is there any other way to solve this problem? I tryed everything I could think of, nothing else worked.

Any ideas?

Thanks,

Irina.

[hoodoo]

You could allocate arglist dynamically and delete it in BounceProc().

Hope this helps.

Regards,
Hoodoo

[meynaf]

Don't use the same arglist for all calls.
You may use an array of arglists, like this :
CreateThread(NULL, 0, BounceProc, (void*)&arglist [ i ], 0, NULL);


This will ensure your parameters won't be overwritten before they're read.

[hoodoo]

I'm afraid this requires allocating not a single arglist but an array of arglists on a heap - if arglist array is automatic it may go out of scope before the threads process their startup parameters.

Regards,
Hoodoo