From: Nick Garnett <nickg@cygnus.co.uk>
To: ecos-discuss@sourceware.cygnus.com
Subject: Re: [ECOS] Thread states
Date: Wed, 10 Jan 2001 03:30:00 -0000 [thread overview]
Message-ID: <wwgk883ejos.fsf@balti.cambridge.redhat.com> (raw)
In-Reply-To: <Pine.GSO.4.10.10101100009230.19243-100000@sierra.ee.ucla.edu>
Paleologos Spanos <paleolog@ee.ucla.edu> writes:
> From what I have understood ,the wait_queue is a number of bits with
> every bit to represent a specific thread which is on the scheduler.So
> every bit is 1 if the corresponding thread is waiting for execution or 0
> if it has finished(EXITED state).Is this correct?
The bit will also be zero if the thread is waiting for some reason, or
has been suspended. The bit is only ever 1 if the thread is ready to
execute.
> So,in my previous mail I was asking if after a thread has completed its
> execution ,will the corresponding bit on the wait_queue become 0.
>
Yes, since the thread in no-longer runnable. In addition it also
deregisters itself from the scheduler so another thread could be
created with it's priority. So, if you restart the thread it may be
given a different priority.
--
Nick Garnett, eCos Kernel Architect
Red Hat, Cambridge, UK
next prev parent reply other threads:[~2001-01-10 3:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-09 16:00 Paleologos Spanos
2001-01-09 16:55 ` Jonathan Larmour
2001-01-10 0:17 ` Paleologos Spanos
2001-01-10 3:30 ` Nick Garnett [this message]
2001-01-10 9:08 ` Jonathan Larmour
2001-04-12 14:28 Paleologos Spanos
2001-04-13 9:27 Paleologos Spanos
2001-04-17 12:46 Paleologos Spanos
2001-04-17 15:55 ` Jonathan Larmour
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=wwgk883ejos.fsf@balti.cambridge.redhat.com \
--to=nickg@cygnus.co.uk \
--cc=ecos-discuss@sourceware.cygnus.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).