John Levon wrote:
> On Tue, Mar 23, 2004 at 04:02:55PM +0000, Angus Leeming wrote:
>
>> Details follow below. Please try and rip it to shreds.
>
> Can't pick a hole in it. Looks fine to me
Magic.
One thing I have been wondering about though.
Why don't you like
while (!finished) {
someNonTrivialFunction();
if (fl_check_forms() == FL_EVENT) {
...
}
}
(I guess that this is what you call a 'busy loop'?)
An alternative to this strategy would be to
1. Reap the zombies in the child_handler function
extern "C"
void child_handler(int)
{
child_data & store = reaped_children[++current_child];
// Clean up the child process.
store.pid = wait(&store.status);
}
2. Use a Timeout to trigger checks of the 'reaped_children' store
every second or so.
That would mean that there was no change to the main GUI process loop
at all, but that children are 'cleaned-up' in the signal handler.
Which would you prefer? (And why!)
(2) is a half-way house between (1) and (3) where (3) is what we have
now, the Timeout being used to both reap the children and post the
callbacks.
I have no real feel for why one way is preferable to any other...
--
Angus
