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Document a bit CLOCK_VIRTUAL and CLOCK_PROF

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degroote 2014-03-28 15:03:41 +00:00
parent 92acc2a82f
commit b45684b49b
1 changed files with 15 additions and 1 deletions
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16
lib/libc/sys/clock_settime.2
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@ -1,4 +1,4 @@
.\" $NetBSD: clock_settime.2,v 1.20 2009/03/11 13:39:14 joerg Exp $
.\" $NetBSD: clock_settime.2,v 1.21 2014/03/28 15:03:41 degroote Exp $
.\"
.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -105,6 +105,20 @@ error if it's the clock specified in a call to
.Fn clock_settime .
The origin of the clock is unspecified.
.Pp
A
.Fa clock_id
of
.Dv CLOCK_VIRTUAL
identifies a clock that increments only when the CPU is running in
user mode on behalf of the calling process.
.Pp
A
.Fa clock_id
of
.Dv CLOCK_PROF
identifies a clock that increments when the CPU is running in user
or kernel mode on behalf of the calling process.
.Pp
If the calling user is not the super-user, then the
.Fn clock_settime
function in the standard C library will try to use the