Question

I am currently using the scala process API scala.sys.processbut, I can’t seem to figure out how to gracefully terminate a process that react to the SIGTERM signal. I’ve done it in python before where there are pretty terminate and send_signal function on the process, but on the scala scala.sys.process.Process object, all I see is destroy. To me it look like scala will nuke my process from orbit, just to be sure, and thats not what I want.

How can I tell this process that it should clean itself and exit from my scala code?

val launcher = Process("myprocess", Seq("args"))
val process = launcher.run()
process.destroy() //Err... no? terminate or equivalent like in python please?

EDIT

For more detail : My scala process is launching a C++ subprocess, that listen to signal handler (SIGTERM, SIGKILL and the like) to know when to exit. It has been well tested and it clean itself correctly. My problem is that I don’t know how to send that signal from my scala application! Thus, my C++ process always get dragged outside and shot instead of just being asked to stop.

Answer 1

Scala Process stuff is based on Java’s, and, therefore, subject to the same limitations. Java provides a very poor interface. Perhaps it makes it possible to use the same interface on more systems, but it is incredibly limiting to those working on Posix systems.