TIMEOUT question

[Matthias Lange]

On 12.09.2007, at 04:43, huang wrote:

> hi,dear all:
>
>      I have a question about l4_ipc_sleep()! I want to make a stop  
> between two
> ipc operation, so i used l4_ipc_sleep(), but it did not work!
>      The code is :
>
> ...
> static void sleep(unsigned exp)
> {
> 	l4_ipc_sleep(l4_ipc_timeout(1,exp,1,exp));
> }
> ...
>
> int main(int argc, char **argv)
> {
> ...
> 	for(;;)
> 	{
> 		...	
> 		sleep(4);
> 	}
>
> 	return 0;
> }
>
> I think sleep(4) should make a stop about 4 seconds, but the the call
> returned immediately. What's the problem in my code?

Just of the top of my head: the value you have to submit is in  
milliseconds not seconds. So if you want to sleep for 4 seconds you  
have to set your timeout to 4000. Another question: Why not using  
l4_sleep(4000)? It's part of l4_util and should do the job for you.

Regards,
Matthias.

> thanks for your help!
>
> best wishes!
>
> 	
>
> 	　　　　　　huang
> 　　　　　　　　learnl4 at sina.com
> 　　　　　　　　　　2007-09-12
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