From: "Christopher Friesen" <cfriesen@nortel.com>
To: Alex Riesen <raa.lkml@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: select(0,NULL,NULL,NULL,&t1) used for delay
Date: Thu, 06 Oct 2005 09:26:48 -0600 [thread overview]
Message-ID: <43454238.4040907@nortel.com> (raw)
In-Reply-To: <81b0412b0510060727h35c0fd78i260037ca89f253f9@mail.gmail.com>
Alex Riesen wrote:
> Why don't you just use nanosleep(2) (or usleep)?
I can think of one main reason...existing code. Also, nanosleep()
rounds up excessively in many kernel versions, so that a request to
sleep for less than 1 tick ends up sleeping for 2 ticks.
The select() man page explicitly mentions this usage;
"Some code calls select with all three sets empty, n zero, and a
non-null timeout as a fairly portable way to sleep with subsecond
precision."
Chris
next prev parent reply other threads:[~2005-10-06 15:26 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-06 13:49 select(0,NULL,NULL,NULL,&t1) used for delay Madhu K.S.
2005-10-06 14:25 ` Jesper Juhl
2005-10-06 14:28 ` Jesper Juhl
2005-10-06 19:05 ` Howard Chu
2005-10-06 19:41 ` Christopher Friesen
2005-10-06 14:27 ` Alex Riesen
2005-10-06 15:26 ` Christopher Friesen [this message]
2005-10-06 15:42 ` Bernd Petrovitsch
2005-10-06 15:57 ` Christopher Friesen
2005-10-06 17:30 ` Bob Copeland
2005-10-10 18:06 ` Bill Davidsen
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