diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/sys/clock_gettime.2 | 62 |
1 files changed, 36 insertions, 26 deletions
diff --git a/lib/libc/sys/clock_gettime.2 b/lib/libc/sys/clock_gettime.2 index e77b1e8..fbd3a91 100644 --- a/lib/libc/sys/clock_gettime.2 +++ b/lib/libc/sys/clock_gettime.2 @@ -29,7 +29,7 @@ .\" .\" $FreeBSD$ .\" -.Dd December 27, 2015 +.Dd March 20, 2017 .Dt CLOCK_GETTIME 2 .Os .Sh NAME @@ -58,31 +58,39 @@ used by a clock which is specified by .Pp The .Fa clock_id -argument -can be one of the following values: -.Dv CLOCK_REALTIME , -.Dv CLOCK_REALTIME_PRECISE , -.Dv CLOCK_REALTIME_FAST -for time that increments as -a wall clock should; -.Dv CLOCK_MONOTONIC , -.Dv CLOCK_MONOTONIC_PRECISE , -.Dv CLOCK_MONOTONIC_FAST -which increments in SI seconds; -.Dv CLOCK_UPTIME , -.Dv CLOCK_UPTIME_PRECISE , -.Dv CLOCK_UPTIME_FAST -which starts at zero when the kernel boots and increments -monotonically in SI seconds while the machine is running; -.Dv CLOCK_VIRTUAL -for time that increments only when -the CPU is running in user mode on behalf of the calling process; -.Dv CLOCK_PROF -for time that increments when the CPU is running in user or -kernel mode; or -.Dv CLOCK_SECOND -which returns the current second without performing a full time counter -query, using in-kernel cached value of current second. +argument can be a value obtained from +.Xr clock_getcpuclockid 3 +or +.Xr pthread_getcpuclockid 3 +as well as the following values: +.Pp +.Bl -tag -width indent -compact +.It Dv CLOCK_REALTIME +.It Dv CLOCK_REALTIME_PRECISE +.It Dv CLOCK_REALTIME_FAST +Increments as a wall clock should. +.It Dv CLOCK_MONOTONIC +.It Dv CLOCK_MONOTONIC_PRECISE +.It Dv CLOCK_MONOTONIC_FAST +Increments in SI seconds. +.It Dv CLOCK_UPTIME +.It Dv CLOCK_UPTIME_PRECISE +.It Dv CLOCK_UPTIME_FAST +Starts at zero when the kernel boots and increments +monotonically in SI seconds while the machine is running. +.It Dv CLOCK_VIRTUAL +Increments only when +the CPU is running in user mode on behalf of the calling process. +.It Dv CLOCK_PROF +Increments when the CPU is running in user or kernel mode. +.It Dv CLOCK_SECOND +Returns the current second without performing a full time counter +query, using an in-kernel cached value of the current second. +.It Dv CLOCK_PROCESS_CPUTIME_ID +Returns the execution time of the calling process. +.It Dv CLOCK_THREAD_CPUTIME_ID +Returns the execution time of the calling thread. +.El .Pp The clock IDs .Fa CLOCK_REALTIME_FAST , @@ -144,7 +152,9 @@ A user other than the super-user attempted to set the time. .Sh SEE ALSO .Xr date 1 , .Xr adjtime 2 , +.Xr clock_getcpuclockid 3 , .Xr ctime 3 , +.Xr pthread_getcpuclockid 3 , .Xr timed 8 .Sh STANDARDS The |
