Quick help

Robert · 06-05-2007, 13:35

In XP how does the OS prevent mutual access to critical resources? It's a question on my mock paper and I can't seem to find a definate answer.

(a)One of the main issues in multi-tasking operating systems relates to the prevention of mutual access to a critical resource.

How, in practice, can this be achieved

LeperousDust · 06-05-2007, 18:26

I've got no idea, but if i had to answer it, i'd go down the line of something to do with Interrupt requests etc...

Mark · 06-05-2007, 18:37

Ah, inter-process/inter-thread synchronisation. Fun (and generally evil) stuff.

Do some google research on 'mutex' and 'semaphore' (the latter in computer use, not old-style signalling use). That should get you a good start.

Robert · 06-05-2007, 23:06

I made some notes about Locks. Phone something on Semaphores as well.

Daz · 07-05-2007, 13:41

How do they define 'critical resources'?

06-05-2007, 13:35	#1
Robert Chump!!! Join Date: Jul 2006 Location: North West Posts: 993	Quick help In XP how does the OS prevent mutual access to critical resources? It's a question on my mock paper and I can't seem to find a definate answer. (a)One of the main issues in multi-tasking operating systems relates to the prevention of mutual access to a critical resource. How, in practice, can this be achieved

06-05-2007, 18:26	#2
LeperousDust Bananaman Join Date: Jul 2006 Location: Liverpool/Edinburgh Posts: 4,817	I've got no idea, but if i had to answer it, i'd go down the line of something to do with Interrupt requests etc... __________________

07-05-2007, 13:41	#5
Daz The Stig Join Date: Jun 2006 Location: Swad! Posts: 10,713	How do they define 'critical resources'? __________________ apt-get moo

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06-05-2007, 18:37	#3
Mark Screaming Orgasm Join Date: Jul 2006 Location: Newbury Posts: 15,194	Ah, inter-process/inter-thread synchronisation. Fun (and generally evil) stuff. Do some google research on 'mutex' and 'semaphore' (the latter in computer use, not old-style signalling use). That should get you a good start.

06-05-2007, 23:06	#4
Robert Chump!!! Join Date: Jul 2006 Location: North West Posts: 993	I made some notes about Locks. Phone something on Semaphores as well.