Passing a instance of a class to a thread via spawn?

[Ali Çehreli]

On 06/29/2013 01:35 PM, Gary Willoughby wrote:
> I want to spawn a few worker threads to do some processing but i want
> the spawned function to have access to a shared object. How do i
> accomplish this?
>
> I'm currently passing it as a parameter and getting the error: "Aliases
> to mutable thread-local data not allowed."

You must pass a shared object:

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

class C
{
     void foo_shared() shared
     {}

     void bar_notshared() const
     {}
}

void worker(shared(C) c)
{
     c.foo_shared();

     // Does not compile:
     // c.bar_notshared();
}

void main()
{
     auto c = new shared(C)();

     spawn(&worker, c);

     thread_joinAll();
}

Ali