On Wednesday, 27 May 2015 at 13:52:33 UTC, Robbin wrote:
I'm writing a daemon in D on linux. I need to be able to stop
(kill) it. The traditional C method is a signal handler. I can
do this, but I can't figure out how to get the handler to do
anything to tell the rest of the daemon to quit.
In a C++ handler, I closed the files that were open, removed a
PID file and exited. Nothing complicated in the job. It was
more complicated in the implementation - I did a longjump from
the signal handler to execute the cleanup code.
I would love to setup "std.signals" classes and from the
"core.stdc.signal" signal handler call "std.signals" emit() to
trigger the "std.signals" observer.
Is there a canonical D way of catching a SIGTERM and unwinding
everything?
RC
I've usually just done this:
import core.stdc.stdlib : exit;
import core.sys.posix.signal : bsd_signal, SIGTERM;
extern(C) void handleTermination(int signal)
{
// Clean up code here.
exit(signal);
}
bsd_signal(SIGTERM, &handleTermination);
