NAME
preempt,
yield —
general preempt and yield functions
SYNOPSIS
#include <sys/sched.h>
void
preempt(
void);
#include <sys/proc.h>
void
yield(
void);
DESCRIPTION
The
preempt() function puts the current LWP back on the system
run queue and performs an involuntary context switch. The
yield() function is mostly same as
preempt(), except that it performs a voluntary context
switch.
These functions drop the kernel lock before switching and re-acquire it before
returning.