equivalent to intLock()/intUnlock()

[chucky]

are there equivalent functions in the VISA libaray to intLock()/intUnlock() that are in VxWorks?

[menchar]

Win32 supports interlocked integers if that's what the VxWorks functions are - I've had VxWorks training but I forget 😉

You can do interlocked increment/decrement/test and set (they call it something else)/exchange of 32 bit integers,  etc.

32 bit writes / reads are atomic on x86 so long as the value is word aligned.

I do not know if there's a facility in VISA itself for this.

Menchar

[chucky]

i forgot to mention the target is LabVIEW RT. we're using LabWindows 2009 to develope in.

[Justin_E]

Hey chucky,

There is a viLock and viUnlock function that serves to give a session exclusive access to a portion of code. I'm not sure if this what you're trying to accomplish with your intLock/Unlock functions, but if not then I doubt there is anything within the VISA API that does what you're trying to do. You can look through the NI-VISA Help file to get a listing of all the functions in the VISA API if you'd like.