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Posix and System V message Queue doubts

Posted on 2002-07-08
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Last Modified: 2013-12-26
Sys V
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I have a C program named 'X' uses System V message Queue and communicates to a program called 'Y'.

Posix
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I have another C program named 'A' which unlinks a Posix Message Queue twice.  While first unlink, the original posix message queue is deleted.  When second unlink is made, the system V message queue described above is removed.

This issue happened in Production server, and I couldnt simulate the scenario.

Please let me know whether there is any relation between Posix and System V message queue handlings.
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Question by:aravindhan
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JIEXA earned 450 total points
ID: 7294980
> Please let me know whether there is any relation between > Posix and System V message queue handlings.

Usually, one is implemented in the terms of the other.

Another possibility, there is a common (OS specific) base
for both System V and POSIX facilities.

For example (AFAIK), Solaris threads and POSIX threads on Solaris (2.6, possibly) both are implemented in the terms of Light-Weight Processes (LWP).
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by:aravindhan
ID: 7301004
Thank you JIEXA for your comments, I still need to explore on how both sys V and POSIX are related internally...
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