DELAY(9) DELAY(9)
NAME
delay, microdelay, addclock0link - small delays, clock
interrupts
SYNOPSIS
void delay(int ms)
void microdelay(int µs)
Timer* addclock0link(void(*clockf)(void), int ms)
DESCRIPTION
Delay busy waits for ms milliseconds. The minimum value of
ms is one on most architectures.
Microdelay works exactly the same as delay but using
microseconds instead.
These routines are intended for use in interrupt contexts,
device reset and shutdown functions, and other places where
the scheduler is unavailable. When you have a process con-
text, and can sleep, consider tsleep(9). Tsleep does not
busy wait.
Addclock0link adds a new periodic timer to the current
processor's timer list, with clockf executing every ms mil-
liseconds. If ms is zero a default clock is used, it will
panic otherwise (i.e. ms < 0).
SOURCE
/sys/src/9/port/portclock.c
/sys/src/9/*/clock.c
SEE ALSO
sleep(9)