K 10
svn:author
V 7
davidxu
K 8
svn:date
V 27
2003-06-28T08:29:05.000000Z
K 7
svn:log
V 837
o Change kse_thr_interrupt to allow send a signal to a specified thread,
  or unblock a thread in kernel, and allow UTS to specify whether syscall
  should be restarted.
o Add ability for UTS to monitor signal comes in and removed from process,
  the flag PS_SIGEVENT is used to indicate the events.
o Add a KMF_WAITSIGEVENT for KSE mailbox flag, UTS call kse_release with
  this flag set to wait for above signal event.
o For SA based thread, kernel masks all signal in its signal mask, let
  UTS to use kse_thr_interrupt interrupt a thread, and install a signal
  frame in userland for the thread.
o Add a tm_syncsig in thread mailbox, when a hardware trap occurs,
  it is used to deliver synchronous signal to userland, and upcall
  is schedule, so UTS can process the synchronous signal for the thread.

Reviewed by: julian (mentor)

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