Anybody Know anything about OS

wreck · Feb 24, 2010

Kyakko said:

it's been awhile and this is off the top of my head but as i can recall, mutexes and semaphores are sentinels (or flag) assigned to a thread so that two threads can't cause a race condition. for example, in a prioritized round robin scheme, a thread is given a priority from 1-9. the thread goes through it's turn, each time minus 1 off it's priority. it won't get processed until it reaches 1. when it does reach 1, it receives a mutex flag (or semaphore.. i forget which). no other thread gets processed until the that thread releases the mutex. the other process gets held in a filo queue either in memory or paged. if a thread haven't reached priority 1, it will be pushed back into the queue. i could be wrong of course...

and minux is a os designed just for learning. it doesn't really run anything useful

edit: after a quick search on mutex, i kinda remember more. i think a mutex is a subroutine that assigns the flag (semaphore) to keep two processes from using a common resource at the same time by using a algorithm like the one i explained above.
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This actually makes a lot of sense. I can start building on this and then go over the book again.

Ill look into minux as well. That might help

MoonDogg · Feb 24, 2010

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Anybody Know anything about OS

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