symbian CPU Scheduling algorithms

[silver_man82]

Hi to all
I am making same research about symbian OS threading and process.
Did any one know what symbian CPU Scheduling algorithms use?
Or where can I read about the kernel of Symbian?
I have homework for OS class ;)

[Greg_Jokiel]

Hi,

If I remember well Symbian use a round robin priority based algorithm to select which thread is to be scheduled next.

Basically it starts with the highest priority queue and runs each thread which are not blocked in turn until there is not more ready to run thread in that priority queue. It then moves to the next priority queue and so on.
Obviously if a thread with a higher priority is ready then the scheduler goes back up the highest priority queue.

GreG

[petrib]

http://www.symbian.com/developer/boo...rnal_info.html

[silver_man82]

I don't how to thank you. thank from my heart

[billbonney]

see online SDK docs

Symbian EKA 1 Kernel (S60 2nd FP3)
http://www.symbian.com/developer/tec...ion.guide.html

and Symbian 9.1 (S60 3rd)
http://www.symbian.com/developer/tec...2eIntroduction

[acemi_mhnds]

I don't how to thank you. thank from my heart

hi!
I have to find some information for Symbian's memory management and schedular.. I tried to open links that are shared but that links cant be open :( please help me..

[petrib]

symbian.com was shut down a couple of years ago, or so.

http://www.developer.nokia.com/Commu...n_OS_Internals

[acemi_mhnds]

thank you :)