Hal Daume III
On Thu, 8 Jan 2004, Glynn Clements wrote:
What does the output from "ps" indicate?
It lists all the processes as defunct:
19981 pts/5 Z 0:00 [suffixtree <defunct>] 19982 pts/5 Z 0:00 [suffixtree <defunct>] 19983 pts/5 Z 0:00 [suffixtree <defunct>] 19984 pts/5 Z 0:00 [suffixtree <defunct>] 19985 pts/5 Z 0:00 [suffixtree <defunct>] ...
if you have zombies (Z state), the program has terminated but the parent (your program) hasn't called wait/waitpid (the Haskell interface is getProcessStatus, getProcessGroupStatus or getAnyProcessStatus).
I don't mind evaluating the contents returned strictly, but I can't figure out how to force the process into a dead state...
They are dead, just not acknowledged by their parent, so the OS keeps their exit statuses around.
I don't see how any of these three functions accomplishes that... what am I missing?
These functions read the exit status, and the OS will clean up. If you start them sequentially, then simply insert a call to the appropriate function at a point where the previous child is already finished. Or spawn a thread which sequence_s nonblocking getAnyProcessStatuses... :) Never tried myself. man waitpid Feri.