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clock_getres.2: Some improvements to CLOCK_BOOTTIME description 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2013-02-25 10:03:48 +01:00
parent b28712e162
commit a5d9ce6533
1 changed files with 8 additions and 3 deletions
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11
man2/clock_getres.2
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@ -160,11 +160,16 @@ the incremental adjustments performed by
.BR adjtime (3).
.TP
.BR CLOCK_BOOTTIME " (since Linux 2.6.39; Linux-specific)"
.\" Added in commit 7fdd7f89006dd5a4c702fa0ce0c272345fa44ae0
.\" commit 7fdd7f89006dd5a4c702fa0ce0c272345fa44ae0
.\" commit 70a08cca1227dc31c784ec930099a4417a06e7d0
Identical to
.BR CLOCK_MONOTONIC ,
except it also includes any time spent in suspend. This allows applications to
get a suspend aware monotonic clock.
except it also includes any time that the system is suspended.
This allows applications to get a suspend-aware monotonic clock
without having to deal with the complications of
.BR CLOCK_REALTIME ,
which may have discontinuities if the time is changed using
.BR settimeofday (2).
.TP
.B CLOCK_PROCESS_CPUTIME_ID
High-resolution per-process timer from the CPU.