How to kill whole application if child thread raises an exception?

[Paolo Invernizzi via Digitalmars-d-learn]

On Wednesday, 26 October 2016 at 08:42:02 UTC, dm wrote:
> Hi. I tried code below:
>
> import std.concurrency;
> import std.stdio;
>
> void func()
> {
>     throw new Exception("I'm an exception");
> }
>
> void main()
> {
>     auto tID = spawn(&func);
>     foreach(line; stdin.byLine)
>         send(tID, "");
> }
>
> I expect my application will die immediatly, but main thread 
> still running and I don't see any errors.
> I want to kill all my threads if it is unhandled exception.
> How can I do that?

You need to link the threads, and at least one receive after the 
child thread has implicitly sent the exception to the main thread:

import std.concurrency;
import std.stdio;

---
void func()
{
     throw new Exception("I'm an exception");
}

void main()
{
     auto tID = spawnLinked(&func);
     receive((int dummy){});
}

---
/Paolo