Apple

What I’m asking is for some advice as to what structures/members can be checked for the possible conditions.

Eddy

From: Michael Smith [mailto:email@hidden]
Sent: Friday, May 16, 2008 12:33 AM
To: Eddy Quicksall
Cc: 'Josh Graessley'; email@hidden
Subject: Re: Use of asynchronous receive at kernel level

On May 15, 2008, at 10:01 PM, Eddy Quicksall wrote:

But there is only one upcall function per socket and there does not seem to be any way to tell what the upcall is for. Is there something I’m missing?

Yes. When you receive the upcall, you need to check (one way or another) for all of the possible conditions, since there is an unavoidable race between when the upcall is triggered and when you check.

= Mike

Eddy

From: Josh Graessley [mailto:email@hidden]
Sent: Monday, April 14, 2008 1:51 PM
To: Eddy Quicksall
Cc: email@hidden
Subject: Re: Use of asynchronous receive at kernel level

When you create the socket you have the option of specifying and upcall function. That upcall function will be called when data is ready and waiting. Look in kpi_socket.h.

-josh

On Mar 24, 2008, at 1:02 PM, Eddy Quicksall wrote:

I need to use the kernel level sockets routines asynchronously (i.e., non blocking). The will normally need a callback when data is available so I can call soreceive to extract the data from the kernel mbuf’s.

I can see how to call soreceive but I can’t see how to get an upcall when data is available.

Does anyone have any information on this?

Eddy

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-kernel mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden

<ATT00233.txt>

References:
	>RE: Use of asynchronous receive at kernel level (From: "Eddy Quicksall" <email@hidden>)