Memory as well as caps are per task, so the lock makes sure that theOn Fri Jul 18, 2014 at 18:34:31 -0400, Yuxin Ren wrote:
> I note that when a thread does memory or capability mapping, both over
> system call and IPC, it needs take a lock, which is the existence_lock of
> target task. I cannot understand it needs take a per task, as cap/page
> table are per thread.
> What data does this lock to protect?
task does not disappear while an operation is in progress.
Adam
--
Adam adam@os.inf.tu-dresden.de
Lackorzynski http://os.inf.tu-dresden.de/~adam/
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