Re: Q: process concurrency and sigaction()

[Anton Altaparmakov <aia21@cam.ac.uk>]

Andi,

Thanks a lot for the explanations! All clear now. (-:

[snip]
At 12:45 09/04/01, Andi Kleen wrote:
>It's ok, but you don't really need to spin. A flag is enough. Also you
>could use the signal blocking function (sigprocmask), but they're slightly
>more expensive than just setting a flag.

Yes, good point. Saves me a whole variable in my data structs in fact, as I 
already have 32 bits worth of mostly unused, atomic flags.

sigprocmask would be rather excessive considering it requires a full 
context switch into the kernel to execute and the high frequency of 
lock/unlocks in the normal code while the handler only executes once every 
5 seconds...

Best regards,

         Anton


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Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @)
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