bug#9101: timeout should use setitimer if available

[Pádraig Brady]

On 16/07/11 20:28, Paul Eggert wrote:
> setitimer has nanosecond resolution, which is better than the
> one-second resolution that 'alarm' has.  timeout should use
> setitimer if available, to take advantage of this.  On 64-bit
> hosts, this has the additional advantage of increasing the
> upper bound for timeouts from 2**31 seconds to 2**63 seconds
> (about 68 years to about 292 billion years, which should be
> long enough for most practical purposes :-).

I'll apply this soon.

cheers,
Pádraig.

timeout-float.diff
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