On Sat, Jun 26, 2010 at 08:59:01PM -0400, Brandon S Allbery KF8NH wrote:
On 6/26/10 18:57 , John Obbele wrote:
After digging things a little, it seems I am messing with the System.Process.createProcess function : none of my spawned process terminates and eventually my OS freezes.
You need to reap zombies manually; take a look at System.Process.waitForProcess. (On POSIX-ish systems, including Linux, you can use the signal handling functions to auto-reap; on Linux simply setting SIGCHLD to SIG_IGN is good enough, but other systems (*BSD, OSX) require you to also set the SA_NOCLDWAIT flag and for portability you should include it. (Which, I note, doesn't seem to be supported in System.Posix.Signals. O Haskell gods: Bug?)
Oki, I've test with waitForProcess and it's working fine. Thanks for your help :) And concerning the signals part, I've never heard of managing child processes with them. I will go reread some docs about it, I may learn some new interesting things today ... regards, /john