Re: Acess variable that was set by thread

[Ali Çehreli via Digitalmars-d-learn]

On 8/8/22 00:14, vc wrote:

> i will like to hear thoughts even if it works
> for me
__gshared would work as well but I would consider std.concurrency first. 
Just a simple example:

import std.stdio;
import std.concurrency;
import core.thread;

struct Result {
  int value;
}

struct Done {
}

void run()
{
  bool done = false;
  while (!done) {
    writeln("Derived thread running.");
    receiveTimeout(1.seconds,
        (Done msg) {
            done = true;
        });
  }

  // Send the result to the owner
  // (I made assumptions; the thread may produce
  // results inside the while loop above.)
  ownerTid.send(Result(42));
}

void main()
{
    auto worker = spawn(&run);
    Thread.sleep(5.seconds);
    worker.send(Done());
    auto result = receiveOnly!Result();
    writeln("Here is the result: ", result);
}

Related, Roy Margalit's DConf 2022 presentation was based on traps 
related to sequential consistency. The video will be moved to a better 
place but the following link should work for now:

  https://youtu.be/04gJXpJ1i8M?t=5658

Ali