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Re: why doesn't "tail -f" use select or poll?
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From: |
James Youngman |
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Subject: |
Re: why doesn't "tail -f" use select or poll? |
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Date: |
Mon, 27 Mar 2006 17:59:14 +0100 |
On 3/26/06, Joshua Haberman <address@hidden> wrote:
> Is there any reason why "tail -f" doesn't use select or poll, instead
> of sleep?
Yes. Plain files are always ready for reading, even if they are at
EOF. That means that select(), poll() and epoll() will not tell you
if data has been appended to the file.
James.