thread exceptions

[Ali Çehreli]

On 08/07/2012 06:25 PM, Martin Krejcirik wrote:
 > Hi,
 >
 > using std.concurrency, is it possible to print an exception if a thread
 > throws (and the main thread is still running) ? It just terminates and
 > prints nothing. I tried to catch it and send as a message to the main
 > thread, but haven't succeeded so far.

Here is an excerpt from a yet-unpublished change to my Concurrency chapter:

-----
The OwnerTerminated and LinkTerminated exceptions can be received as 
messages as well. The following code demonstrates this for the 
OwnerTerminated exception:



     bool isDone = false;

     while (!isDone) {
         receive(
             (int message)
             {
                 writeln("Message: ", message);
             }
             ,

             (OwnerTerminated exc)
             {
                 writeln("The owner has terminated; exiting.");
                 isDone = true;
             }
         );
     }
-----

In order to receive LinkTerminated as a message, start the worker with 
spawnLinked() instead of spawn().

Ali

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