From: "Fisher" <fisher@biuroserwis-kalisz.com>
Subject: Re: help plz.
Date: Tue, 10 Jun 2003 18:20:48 +0200
Date: 2003-06-10T18:20:48+02:00 [thread overview]
Message-ID: <bc50h3$25k$1@atlantis.news.tpi.pl> (raw)
In-Reply-To: bc294o$brh$1@nemesis.news.tpi.pl
hi
thanks for Your answers.
I have with this Ada problem.
it walks about something like this, as dynamic priorities:
we have N processes (let's put 7)
the attached priority becomes every of processes
np. P1 has 1 ( the highest), P2 - 2, P3 - 3 itd P7 -7.
processes look as follows: local section - some delay
and critical section - some delay
it walks about show dynamic priority use only.
we have the protected object and these processes compete to access to
this object to execute his critical section.
if P1 competes from P2 this P1 comes in and executes critical section
(because P1 has higher priority than P2).
after exit from protected object P1 sets his priority on the lowest,
sets his priority on 7 and the rest of processes raises,
that is P2 -1 (highest), P3 -2 .... P7-6 and to the end P1 -7.
however if (from start state) about entry to protected object
it competes P3 and P4 ( P3 comes in)
after exit from object alters the priorities of processes, but only these,
which they are for him, that is P1 becomes without changes, P2 without
changes, P4 -3,
P5-4, P6-5,P7-6 and P3-7.
I have to show this use only.
Please help me if You can.
My work inflicts that I haven't time for nothing besides sleep.
I will be very grateful for Your help.
I apologize for my English, it is not on top-level.
Fisher
fisher@biuroserwis-kalisz.com
Poland
next prev parent reply other threads:[~2003-06-10 16:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-09 15:29 help plz Fisher
2003-06-09 18:26 ` Stephen Leake
2003-06-09 23:15 ` Wojtek Narczynski
2003-06-10 2:47 ` Steve
2003-06-10 16:20 ` Fisher [this message]
2003-06-10 18:15 ` Stephen Leake
2003-06-10 19:34 ` Fisher
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