code: 9ferno

ref: 728eff896074bfa69130c243941ffc6d5c19a735
dir: /man/2/sys-millisec/

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.TH SYS-MILLISEC 2
.SH NAME
millisec \- millisecond timer
.SH SYNOPSIS
.EX
include "sys.m";
sys := load Sys Sys->PATH;

millisec:	fn(): int;
.EE
.SH DESCRIPTION
.B Millisec
returns the value of an internal system clock, in milliseconds.
The actual resolution of the clock is a property of the underlying
system and may be coarser than a millisecond.
The epoch is arbitrary, so
.B millisec
is useful for measuring durations but not absolute time.
If the system operates continuously, the millisecond counter overflows
every few months;
a reboot resets the epoch.
.SH SEE ALSO
.IR sys-intro (2),
.IR sys-sleep (2)