ref: 3efb5bbb4061056e523858b134c555949591efe2
dir: /man/2/sys-millisec/
.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)