Re: [AD] Allegro on multi-processor machines

[Chris <kcat@xxxxxxxxxx>]

Evert Glebbeek wrote:
> Also, can someone please explain again why with the following definitions
[snip]
> XLOCK() and XUNLOCK() don't block indefinatebly?

Because, as Peter let on to, on the sigalrm version, the main program is 
stopped while the interrupt functions run. If an interrupt function 
tried to lock while the main program was already locked, the interrupt 
would then wait until the main program unlocks.. which would never 
happen because we'd be stuck in the interrupt function waiting.

- Kitty Cat