> > As for the problem that Jeff is describing, this is a problem with trying
> > to make the old Apache 1.3 code fit the MPM model without paying enough
> > attention to the flow of the code. Take a look at the 1.3 code, it uses
> > longjmp to make sure it is always executing the correct code. The 2.0
> > code tries to use return codes from APR functions. But, the basic code
> > still looks like the 1.3 code. A few months ago, child processes were
> > morphing into parent processes when we tried to kill them off. To fix
> > this, I modified some of the code to exit at the right time. I believe
> > about a month later, Paul Reder made a similar change. IMNSHO, this can
> > be solved only by actually taking the time to trace through the prefork
> > MPM, and figure out what is happening, and fixing the bugs. BTW, the
> > threaded and perchild MPMs are incredibly similar to the prefork MPM in
> > this respect.
>
> I'm not sure what you mean by "fixing the bugs."
>
> As I see it, prefork wants to use signals as the way to tell child
> processes to go away. Doing much in the signal handler is
> problematic. Instead we need to 1) longjmp() from the signal handler to
> a safe spot and exit from there or 2) we make sure we wake up when the
> signal handler returns. Do you have a third suggestion?
>
> I'll post a patch in the next few minutes for solution 2. It seems to
> work fine.
I think the only way to really solve this, is to look at how the longjmp()
was used in 1.3 to ensure we died correctly. I would also suggest looking
at how threaded dies. If the real problem is the signal handling, then I
would suggest that Dean was correct about signals and daemons, and we
should just remove all singals and use the pipe_of_death for all Unix
MPMs.
Assuming that locks are interuptable is not a good idea IMHO.
Ryan
_______________________________________________________________________________
Ryan Bloom [EMAIL PROTECTED]
406 29th St.
San Francisco, CA 94131
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