[Issue 3462] Add a clean way to exit a process.

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=3462

--- Comment #10 from Sean Kelly <sean at invisibleduck.org> ---
If we assume that people are multithreading using std.concurrency we could send
"terminate" messages to all running threads, similar to the OwnerTerminated
message today.

Beyond that... we could maybe send a signal to all running threads on
supporting platforms and have those signal handlers throw.  Throwing from a
signal handler doesn't always work (it's not explicitly supported) but it does
on some OSes.

The only other thing I can think of would be to build in some flag that threads
voluntarily check periodically.  But it's just as easy to do this on a
per-application basis.  There's really little value in building such a flag
into Druntime.

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