lkml.org 
[lkml]   [2008]   [Jun]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subjectnanosleep() uses CLOCK_MONOTONIC, should be CLOCK_REALTIME?
Thomas,

(I gues you are the right target for this?)

The POSIX.1 specification of nanosleep() says:

But, except for the case of being interrupted by a signal, the
suspension time shall not be less than the time specified by
rqtp, as measured by the system clock CLOCK_REALTIME.


However, reading kernel/hrtimer.c:sys_nanosleep(), it appears that
CLOCK_MONOTONIC is used.

return hrtimer_nanosleep(&tu, rmtp, HRTIMER_MODE_REL, CLOCK_MONOTONIC);

Is there a reason to use CLOCK_MONOTONIC, instead of CLOCK_REALTIME? Is it
intentional? If yes, then I should document this in the man-pages. If not,
then it should be fixed.

Cheers,

Michael


--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
man-pages onlne: http://www.kernel.org/doc/man-pages/online_pages.html
Found a bug? http://www.kernel.org/doc/man-pages/reporting_bugs.html



\
 
 \ /
  Last update: 2008-06-23 10:05    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site