Re: mbuf data access (repost)
Re: mbuf data access (repost)
- Subject: Re: mbuf data access (repost)
- From: Peter Lovell <email@hidden>
- Date: Tue, 13 Jun 2006 14:30:25 -0400
On Jun 12, 2006, at 4:46 AM, email@hidden wrote:
On 7 juin 06, at 19:26, Josh Graessley wrote:
mbuf_len like mbuf_data works whether or not MBUF_EXT is set.
MBUF_EXT just indicates that the actual implementation of the mbuf
is storing the data in an external cluster and not in the mbuf
data structure itself. The one reason this would be important to a
client of the mbuf is the case where you may modify data. In some
cases, the reference to the external cluster may be shared.
Is there a way to find out if those mbufs are shared ?
It looks to me as though mbuf_mclhasreference may do what you want.
That's in the code but doesn't seem to have a documentation entry.
Check bsd/kern/kpi_mbuf.c to see if it's what you need
Cheers.....Peter
_______________________________________________
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