Increment and assign atomic

Asked Dec 17 '19 at 13:33

Active Dec 17 '19 at 13:33

Viewed 26 times

I want to increment a int variable and assign it to another int in a atomic operation.

I know about Interlocked.Increment method. But as I understand it can only increment the passed variable atomicly, but not assign the result to a new variable.

So my approach is to lock on a object like this:

private static int globalCounter;
private static object LockObject;
private int localCounter;

/* ... */

lock (LockObject)
{
    globalCounter++;

    localCounter = globalCounter;
}

Is there a more elegant way to do this?

asked Dec 17 '19 at 13:33

user11909

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Well, get the return value : `localCounter = Interlocked.Increment(ref globalCounter);` – Cid Dec 17 '19 at 13:35
I don't think there is. Although your code inside the `lock()` can be simplified to `localCounter = ++globalCounter;` – Tanveer Badar Dec 17 '19 at 13:36
@Cid This was my first thought, but is the assignment also within the atomic operation? – user11909 Dec 17 '19 at 13:36

Increment and assign atomic

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