jhb 2005-12-29 20:57:45 UTC
FreeBSD src repository
Modified files:
sys/kern kern_synch.c
sys/sys systm.h
Log:
Add a new function msleep_spin() which is a slightly stripped down version
of msleep(). msleep_spin() doesn't support changing the priority of the
thread while it is asleep nor does it support interruptible sleeps (PCATCH)
or the PDROP flag. It does support timeouts however. It differs from
msleep() in that the passed in mutex is a spin mutex. This means one can
use msleep_spin() and wakeup() with a spin mutex similar to msleep() and
wakeup() with a regular mutex. Note that the spin mutex in question needs
to come before sched_lock and the sleepq locks in lock order.
Revision Changes Path
1.272 +164 -0 src/sys/kern/kern_synch.c
1.237 +1 -0 src/sys/sys/systm.h
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