Does .NET have a check-and-set operator?

Question

Where are the basic concurrency primitives in .Net?

Specifically I want to use a Check and Set operator.

Not sure what check and set is, but look into the `Interlocked` class. It has compare-and-exchange and similar operations. — CodesInChaos, Nov 24 '11 at 16:41

score 3 · Answer 1 · answered Nov 24 '11 at 16:45

3

You are probably looking for Interlocked.CompareExchange.

answered Nov 24 '11 at 16:45

Tudor

score 3 · Accepted Answer · answered Nov 24 '11 at 17:08

You need to look at the Interlocked class in the System.Threading namespace. The CompareExchange is the method you're looking for.

It has the form CompareExchange(target, value, comparand) which in pseudo-code means if(target==comparand) target=value;.

There are also a load of other atomic methods on the Interlocked class that are useful, such as Increment, Decrement, Add and Exchange.

2 Answers2