[rabbitmq-discuss] Regarding the non-blocking call of "amqp_simple_wait_frame"

Tue Jan 18 23:48:26 GMT 2011

David,

couple of months ago i submitted a patch to support read_timeout in rabbitmq-c.  

http://lists.rabbitmq.com/pipermail/rabbitmq-discuss/2010-June/007453.html
I remembered getting email from you about adding this patch to the src later.

attached please find the patch again.  it uses select() to timeout on read, so 
the wait_frame() would not block forever.
we have used it in production for 6 months without any problems.
thanks.

-alex

________________________________
From: David Wragg <david at rabbitmq.com>
To: Deepak Vijayvergiy <vdeepak at yahoo-inc.com>
Cc: "rabbitmq-discuss at lists.rabbitmq.com" <rabbitmq-discuss at lists.rabbitmq.com>
Sent: Mon, January 17, 2011 1:36:43 AM
Subject: Re: [rabbitmq-discuss] Regarding the non-blocking call of 
"amqp_simple_wait_frame"

Hi Deepak,

Deepak Vijayvergiy <vdeepak at yahoo-inc.com> writes:
> I am implementing RabbitMQ-C client library in my c++ project and I
> have a question about the message reading from the queue.  We need to
> call the function amqp_simple_wait_frame(), and we are blocked here to
> get the result, and then return when we get the message.  Question is:
> Do you also have some other way in which we can read the message
> without blocking?

rabbitmq-c does not currently support non-blocking operation.  You could
use threads though: have one thread responsible for AMQP communictions,
which passes recieved messages to other threads for procesing.

David

-- 
David Wragg
Staff Engineer, RabbitMQ
SpringSource, a division of VMware
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