From: Andrew Lunn <andrew@lunn.ch>
To: ariga masahiro <ariga@link-lab.co.jp>
Cc: ecos-discuss@ecos.sourceware.org
Subject: Re: [ECOS] When or on what condition does "deschedule" happen?
Date: Mon, 19 May 2008 13:18:00 -0000 [thread overview]
Message-ID: <20080519131803.GA16046@lunn.ch> (raw)
In-Reply-To: <001901c8b971$a14202c0$1c0110ac@ariga>
> My question is last part of Deschedule when ThreadC resumes execution.
>
> Am I correct in assuming that among your conditions, only two conditions
> should be fullfiled to make it possible
> for ThreadC to resume execution ?
> 1.When the thread blocks.(How does scheduler recognise this ?)
Blocking calls are part of the OS and the scheduler knows about them.
> 2.When a thread exits.
>
> If ThreadA does not finish and enter looping state,then isn't there any
> way for ThreadC to resume execution ?
Nope. The highest priority runnable thread always runs. All high
priority threads need to finish doing what they are doing before a
lower priority threads get to run.
Andrew
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next prev parent reply other threads:[~2008-05-19 13:18 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-07 23:59 [ECOS] Wrongfully compiled code ariga masahiro
2008-01-08 0:05 ` Gary Thomas
2008-01-08 1:05 ` ariga masahiro
2008-01-17 19:21 ` [ECOS] " Dave Lawrence
2008-01-17 23:50 ` ariga masahiro
2008-01-18 12:16 ` Dave Lawrence
2008-01-18 14:40 ` Gregg Levine
2008-01-18 15:44 ` Dave Lawrence
2008-01-18 15:49 ` Gregg Levine
2008-01-18 16:09 ` Dave Lawrence
2008-01-21 0:34 ` ariga masahiro
2008-02-04 1:49 ` ariga masahiro
2008-02-04 11:38 ` Dave Lawrence
2008-02-12 1:06 ` ariga masahiro
2008-02-12 10:55 ` Dave Lawrence
2008-02-22 4:57 ` [ECOS] How to re-install newly compiled gnutools ariga masahiro
2008-02-22 7:15 ` ariga masahiro
2008-05-16 8:13 ` [ECOS] When or on what condition does "deschedule" happen? ariga masahiro
2008-05-16 15:26 ` Andrew Lunn
2008-05-19 5:32 ` ariga masahiro
2008-05-19 13:18 ` Andrew Lunn [this message]
2008-05-19 13:31 ` Gary Thomas
2008-05-20 1:26 ` ariga masahiro
2008-05-20 12:18 ` Andrew Lunn
2008-05-23 7:38 ` ariga masahiro
2008-05-23 9:35 ` Nick Garnett
[not found] ` <000601c8c165$406e0970$1c0110ac@ariga>
2008-05-29 18:23 ` [ECOS] Re: In trouble of timer operations Andrew Lunn
2008-05-30 2:50 ` ariga masahiro
2008-05-30 3:09 ` Paul D. DeRocco
2008-05-30 4:11 ` ariga masahiro
2008-05-30 4:43 ` Paul D. DeRocco
2008-05-30 7:26 ` ariga masahiro
2008-05-30 7:47 ` Paul D. DeRocco
2008-05-30 8:03 ` ariga masahiro
2008-05-30 8:07 ` Andrew Lunn
2008-06-04 5:25 ` ariga masahiro
2008-06-04 10:06 ` Paul D. DeRocco
2008-06-05 6:14 ` ariga masahiro
2008-06-05 17:39 ` Paul D. DeRocco
2008-05-30 6:35 ` Andrew Lunn
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