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| ydsk |
 Posted: Wed Mar 21, 2007 9:02 pm Post subject: MQWI_UNLIMITED = -1 / 0 |
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Chevalier
Joined: 23 May 2005
Posts: 410
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Hi,
Need to know how it works if we specify a value of 0 wait time for a GET.
I know if we specify -1 ( or MQWI_UNLIMITED ) it waits indefinitely for a response.
But what will happen if we specify a value of zero ?
Does it expect a response instantly ? or does it work some other way.
Somebody please suggest.
thnx.
ydsk. |
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| jsware |
| Posted: Thu Mar 22, 2007 12:18 am Post subject: |
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Chevalier
Joined: 17 May 2001
Posts: 455
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A wait interval of 0 means exactly that - wait for 0.0 seconds. I.e. if no message exists, do not wait for one.
Obviously there will be a very very short delay if you timed it since checking for a message takes some compute cycles but we're probably talking milliseconds or nano-seconds or whatever depending on your platform and hardware power.
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Regards
John
The pain of low quaility far outlasts the joy of low price. |
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| Vitor |
| Posted: Thu Mar 22, 2007 12:58 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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It's more traditional, though functionally equivalent, to specify MQGMO_NO_WAIT rather than a 0 wait interval.
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Honesty is the best policy.
Insanity is the best defence. |
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| ydsk |
| Posted: Thu Mar 22, 2007 12:22 pm Post subject: |
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Chevalier
Joined: 23 May 2005
Posts: 410
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Thanks guys.
I was actually trying to know the difference between MQGMO_NO_WAIT and zero wait interval.
It could be that they are 2 different ways of doing the same thing.
Maybe IBM can say what the difference is precisely.
thnx.
ydsk. |
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| jefflowrey |
| Posted: Thu Mar 22, 2007 12:23 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| Vitor wrote: |
| functionally equivalent, to specify MQGMO_NO_WAIT rather than a 0 wait interval. |
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