[openbox] Pipe menus and background proccesses
mangosoft at comhem.se
Wed Jan 18 06:37:35 EST 2006
On Wed, 18 Jan 2006, Neil Bird wrote:
> Around about 18/01/06 10:34, Manuel Colmenero typed ...
>> No luck, openbox waits for this process too :(
>> The idea is that a pipe outputs "Loading..." and starts an independent
>> process to download an RSS.
>> But OB waits for the background process, so it's kind of useless... I've
>> tried spawning the process, system(".. &"), popen(".. &"), without any
>> luck so far. The effect is that OB freezes while the RSS is being
> What are you expecting it to do, though?
> From what you've said, you want an RSS-fed submenu. So, you either have
> the prog. that generates the submenu go off and get the feed (in which case
> OB *has* to wait for it, as it can't draw the requested menu), or you have a
> daemon running elsewhere (I've done this in the past, but not with OB)
> dumping the feed (obmenu) to a file somewhere, and have your pipe submenu
> read this file; then it'll be near-instant, but your feed may lag.
If you run with &, your perl or whatever process probably waits for all
its child processes, what you want is either nohup command, or command &|,
or command & disown. Some of these may only work in interactive terminals
> - there's an outstanding nicety of having OB delay a little before proffering
> submenus to prevent unnecessary delays when traversing down the parent menu.
I take it you mean outstanding as in missing, not as in really good,
because there's no such feature in ob :).
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