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Forum Topic - quiesce block: (4 Items)

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Senthil K

01/04/2010 11:43 AM

post44525

Hi,

Can you please tell me why quiesce block is need for io-pkt thread.
is there any document for quiesce block?
please help me on this..

Thanks and Regards
K.Senthil

Sean Boudreau(deleted)

01/04/2010 12:47 PM

post44532

Re: quiesce block

On Mon, Jan 04, 2010 at 11:43:57AM -0500, Senthil K wrote:
> Hi,
> 
> Can you please tell me why quiesce block is need for io-pkt thread.

To quiesce your thread as required.

> is there any document for quiesce block?

Not currently.  What would you like to know?

Regards,

-seanb

Senthil K

01/04/2010 11:30 PM

post44540

Re: quiesce block

Hi Sean,

I want to know how this is blocking the thread and how its wakening.

Thanks and Regards
K.Senthil

Jeevan Mathew(deleted)

01/05/2010 3:04 AM

post44541

Re: quiesce block

> Hi Sean,
> 
> I want to know how this is blocking the thread and how its wakening.
> 
> Thanks and Regards
> K.Senthil


Looks like it is based on mutexes and condvars.

from here:
http://www.qnx.com/developers/docs/6.4.1/neutrino/sys_arch/kernel.html

---
...
...
Here's a typical example of how a condvar can be used:

pthread_mutex_lock( &m );
. . .
while (!arbitrary_condition) {
    pthread_cond_wait( &cv, &m );
    }
. . .
pthread_mutex_unlock( &m );
...
...
---

HTH,
Jeevan

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