Question

I would like to keep a static counter in a garbage collected class and increment it using Interlocked::Increment. What’s the C++/CLI syntax to do this?

I’ve been trying variations on the following, but no luck so far:

ref class Foo {    static __int64 _counter;     __int64 Next()    {       return System::Threading::Interlocked::Increment( &_counter );    }  }; 

Answer 1

You need to use a tracking reference to your _int64 value, using the % tracking reference notation:

ref class Bar {     static __int64 _counter;      __int64 Next()     {         __int64 %trackRefCounter = _counter;         return System::Threading::Interlocked::Increment(trackRefCounter);     } };