K 10
svn:author
V 7
davidxu
K 8
svn:date
V 27
2003-03-19T05:49:38.000000Z
K 7
svn:log
V 334
Adjust code for userland preemptive. Userland can set a quantum in
kse_mailbox to schedule an upcall, this is useful for userland timeout
routine, for example pthread_cond_timedwait().

Also extract upcall scheduling code from kse_reassign and create
a new function called thread_switchout to include these code.

Reviewed by: julain

END