[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: emulating no-senders notifications in L4?

From: Ondrej Hurt
Subject: Re: emulating no-senders notifications in L4?
Date: Sun, 23 Dec 2001 21:12:26 +0100 (CET)

> > Are there no cases where the kernel kills a task without telling any
> > other task?

> No.  If, say, an exception is not handled properly the kernel just
> resumes it (or just removes it from the run queue, generating the
> impression that the task is spinning in an endless loop).  An example
> of such an exception is when a thread generates a page fault but there
> is no valid pager associated with thread that can handle the fault.
> The kernel can not simply decide to kill a task.  The decission to
> kill a task must be taken at user-level.
>       eSk

But who tells the user-level that a task is a candidate for slaughter
? The L4 user manuals says that shouldn't an exception be handled,
the faulting thread would be blocked forever. Nothing more.

Už jste někdy v čase adventním honili losy? Jedinečnou šanci
vyzkoušet si tuto činnost máte právě teď. http://los.tiscali.cz

reply via email to

[Prev in Thread] Current Thread [Next in Thread]