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| andy840920 |
 Posted: Mon May 28, 2007 6:06 am Post subject: how to query queue depth not int while |
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Apprentice
Joined: 29 Apr 2007
Posts: 44
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| Code: |
while (MQINQ(...) > 0)
sleep(1);
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my application continue when the queue depth equals 0. but i can't find wait api in MQ. i must query in a while loop and sleep 1 seconds. has some others methods? |
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| jefflowrey |
| Posted: Mon May 28, 2007 6:33 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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DON'T DO THAT.
Specify a WaitInterval on the GET, and loop until GET returns a 2033 - no more messages.
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I am *not* the model of the modern major general. |
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| andy840920 |
| Posted: Tue May 29, 2007 5:49 am Post subject: |
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Apprentice
Joined: 29 Apr 2007
Posts: 44
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| jefflowrey wrote: |
DON'T DO THAT.
Specify a WaitInterval on the GET, and loop until GET returns a 2033 - no more messages. |
why don't do that???
two processes, one GET from the queue in a while, and the other do something must after the first process GET over. so the second process should QMINQ the queue depth. the first process is a java application. the second is a c application. how to do? |
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| Vitor |
| Posted: Tue May 29, 2007 6:02 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| andy840920 wrote: |
| why don't do that??? |
Because the queue depth is affected by a number of factors and the number you get back may not be what you expect. Search the forum for a number of discussions on this matter.
| andy840920 wrote: |
two processes, one GET from the queue in a while, and the other do something must after the first process GET over. so the second process should QMINQ the queue depth. the first process is a java application. the second is a c application. how to do? |
Both processes must read their queues with a wait interval, as has been suggested to you.
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Insanity is the best defence. |
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| jefflowrey |
| Posted: Tue May 29, 2007 10:58 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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If you have two processes written in two different languages, then it's very likely that they do two different things.
In which case, they should not be sharing a queue. Every application that needs to GET messages deserves it's own individual queue.
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| Vitor |
| Posted: Tue May 29, 2007 11:59 pm Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| Vitor wrote: |
| Both processes must read their queues with a wait interval, as has been suggested to you. |
I thank jefflowrey for highlighting an issue I should have been clearer about 
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