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.\" This -*- nroff -*- file has been generated from
.\" DocBook SGML with docbook-to-man on Debian GNU/Linux.
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.TH "clock_gethrtime" "3"
.SH "NAME"
clock_gethrtime \(em get high resolution time using the specified clock
.SH "SYNOPSIS"
.PP
.nf
.ta 8n 16n 24n 32n 40n 48n 56n 64n 72n
#include <rtl_time.h>
hrtime_t \fBclock_gethrtime\fP(clockid_t \fBclock\fR);
.fi
.SH "DESCRIPTION"
.PP
This function is a non-portable RTLinux extension. \fBclock_gethrtime\fP returns the clock reading in nanoseconds. This is a convenience function for \fBclock_gettime(3)\fP
.PP
\fBhrtime_t\fR is a 64-bit signed integer.
.SH "NOTES"
.PP
The following clocks are supported by this release of RTLinux:
.IP "CLOCK_REALTIME" 10
This is the standard POSIX realtime clock. The values
returned by clock_gettime for this clock represent the
time elapsed since the Epoch. This clock can be adjusted with
the \fBclock_settime(3)\fP function.
.IP "CLOCK_MONOTONIC" 10
This POSIX clock runs at a steady rate, and is never
adjusted or reset.
.IP "CLOCK_RTL_SCHED" 10
The clock that the scheduler uses for task scheduling.
The time values passed to pthread_make_periodic_np are normally specified
relative to this clock.
.SH "AUTHOR"
.PP
Michael Barabanov (\fIbaraban@fsmlabs.com (link to URL mailto:baraban@fsmlabs.com) \fR)
.SH "SEE ALSO"
\fIrtl_getschedclock(3) (link to URL rtl_getschedclock.3.html) \fR, \fIrtl_setclockmode(3) (link to URL rtl_setclockmode.3.html) \fR, \fIUNIX spec clock_gettime(3) (link to URL ../susv2/xsh/clock_gettime.html) \fR
.PP
\(co2001 FSMLabs Inc.
.PP
All rights reserved.
...\" created by instant / docbook-to-man, Wed 13 Jun 2001, 17:57
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