I have:

class DataSignal : Thread
{
public:
   static int dataReadDelay;

   void run() {
       while (true) {
           Thread.sleep(dur!"msecs"(dataReadDelay));
           // Read in the new file data
       }
   }
}


in main I have:

DataSignal.dataReadDelay = 8000;

// initialize a bunch of signals


Then when each thread is running they sleep for 0 seconds, and I can verify that dataReadDelay is staying at 0.  I have initialized it no where else.  This seems like a major bug.

On Sunday, 27 August 2017 at 22:21:11 UTC, Enjoys Math wrote:
>    static int dataReadDelay;

That's thread-local. Use shared to make it shared across all threads, and/or initialize it in the same thread as the use.


See:
https://dlang.org/migrate-to-shared.html
https://tour.dlang.org/tour/en/multithreading/thread-local-storage

On Sunday, August 27, 2017 22:29:46 Adam D. Ruppe via Digitalmars-d-learn wrote:
> On Sunday, 27 August 2017 at 22:21:11 UTC, Enjoys Math wrote:
> >    static int dataReadDelay;
>
> That's thread-local. Use shared to make it shared across all threads, and/or initialize it in the same thread as the use.
>
>
> See:
> https://dlang.org/migrate-to-shared.html
> https://tour.dlang.org/tour/en/multithreading/thread-local-storage

Yeah, so the thread with main in it should have the value set, but for every other thread, it would be default-initialized. If you're just looking to set it that one value for all threads and not change it, I'd suggest that you just set it directly and make it immutable - or use enum, so it's a manifest constant. If you want to change it though, you will need to use shared and deal with protecting it appropriately when accessing it.

- Jonathan M Davis