D语言线程标识符

import std.stdio; 
import std.concurrency;  

void printTid(string tag) { 
   writefln("%s: %s, address: %s", tag, thisTid, &thisTid); 
} 

void worker() { 
   printTid("Worker"); 
}

void main() { 
   Tid myWorker = spawn(&worker); 

   printTid("Owner "); 

   writeln(myWorker); 
}