On 26-10-2012 01:11, Sean Kelly wrote:
On Oct 23, 2012, at 11:25 AM, Peter Sommerfeld <nore...@rubrica.at> wrote:
Hi!
I'm new to D an not a native speaker so I may misunderstand
the following sentence of the thread documentation.
"final @property void isDaemon(bool val);
Sets the daemon status for this thread. While the runtime
will wait for all normal threads to complete before tearing
down the process, daemon threads are effectively ignored and
thus will not prevent the process from terminating. In effect,
daemon threads will be terminated automatically by the OS when
the process exits."
That sounds to me as if the daemon will be finished when the
main-thread has finished. But in my understanding daemons will
survive the termination of the main-thread and be killed by
a signal (KILL, SIGTERM etc) or finish itself.
I think that is the case here too. Is that true ?
In D, the main thread will join all non-daemon threads before calling static
dtors or performing any other cleanup. Daemon threads will continue to run
until the process exits. So daemon threads are basically just C-style kernel
threads.
Another question: I cannot find a reference how D deals with
OS SIGNALS, especially about differences between the platform
(*nix; Windows, Mac). Can you explain or point me to the
documentation?
The GC in D uses SIGUSR1 and SIGUSR2 to coordinate collections on Posix OSes
(except for OSX). You're free to use any other signal just as you would in C.
What's used on OS X? I forget...
--
Alex Rønne Petersen
a...@lycus.org
http://lycus.org
