smallest message header

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Armin

smallest message header

Post by Armin » Thu Jul 26, 2007 3:42 pm

Hallo,

what is the minimum message header of a message passing message?

Does it contain only the type and subtype field ??


Regards

--Armin

maschoen

RE: smallest message header

Post by maschoen » Thu Jul 26, 2007 5:58 pm

I don't think the kernel cares, you could probably send a 0 length
message, but if you are using the resource manager code, you probably
just need the type.

Kevin Stallard

Re: smallest message header

Post by Kevin Stallard » Thu Jul 26, 2007 7:30 pm

Hi Armin,

If you are talking about IO messages used by the resource manager, I think
it uses a short for the message id.
Kevin

"Armin" <a@b.com> wrote in message news:f8afhs$3f6$1@inn.qnx.com...
Hallo,

what is the minimum message header of a message passing message?

Does it contain only the type and subtype field ??


Regards

--Armin

Armin

Re: smallest message header

Post by Armin » Fri Jul 27, 2007 8:18 am

Hi Kevin,

Kevin Stallard wrote:
Hi Armin,

If you are talking about IO messages
I'm talking about low level message passing messages.
You are right ... the first 16 bit of a message passing message seems to
be used in general in order to sort out system level and application
level messages.

--Armin


used by the resource manager, I think
it uses a short for the message id.
Kevin

"Armin" <a@b.com> wrote in message news:f8afhs$3f6$1@inn.qnx.com...
Hallo,

what is the minimum message header of a message passing message?

Does it contain only the type and subtype field ??


Regards

--Armin

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