Default value for numCapabilities?

[Johan Tibell]

On Wed, Apr 28, 2010 at 8:02 AM, Bryan O'Sullivan <bos at serpentine.com> wrote:
> On Tue, Apr 27, 2010 at 7:02 PM, Dimitry Golubovsky <golubovsky at gmail.com>
> wrote:
>>
>> This is probably about forkProcess rather than forkIO/forkOS, but why
>> this limitation?
>
> That's a standard Unix limitation. A child process is forked with one
> thread, so if the parent has multiple threads running, it's overwhelmingly
> likely that the child will be unable to execute correctly.

One problem used to be that the I/O manager would get killed but Simon
Marlow fixed that. I think we should support forking, with some
caveats, so that we can daemonize processes.