On 03/30/12 15:36, Giovanni Trematerra wrote:
On Thu, Mar 29, 2012 at 7:18 PM, Mahesh Babu<maheshbab...@yahoo.co.in> wrote:
Which part of the source code in FreeBSD 9 is responsible for making context
switching i.e. storing and restoring the process state.
Context switch is split up in machine indipendent code (MI Code) and
machine dependent code (MD Code)
For MI part take a look at
mi_switch in sys/kern/kern_sync.c
sched_switch in sys/kern/sched_ule.c and sys/kern_4bsd.c depending on
configurated scheduler in the kernel config file.
For MD part search for symbol cpu_switch inside the specific arch directory.
For background information you could read "The Book" (a bit dated but
still quite relevant):
http://www.informit.com/store/product.aspx?isbn=0201702452
And you are especially lucky, since the chapter that is the most
relevant to you is freely available on-line:
http://www.informit.com/articles/article.aspx?p=366888
Kind regards,
Hans Ottevanger
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