Re: [Sqlrelay-discussion] Dead children (zombies and sem undo)

[Renat S. <sr...@st...>]

On 29.06.2011 21:25, David Muse wrote:
> Renat,
>
> This will definitely improve things, but maybe we should just make the 
> scaler call reapChildren when it receives a SIGCHLD.  Can you think of 
> any reason why we shouldn't do that?

The problem is with signal handler rules. It could set only one type of 
static variable - sig_atomic_t. So I think it is possible to count 
reaped children in signal handler in variable n_reaped and then (since 
semset->wait(6) would exit and set EINTR) in the main code block 
SIGCHLD, change shm and set n_reaped to 0 . A little bit tricky, but 
should work.