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Processes in Shared Memory

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# 1  
Old 10-23-2009
Processes in Shared Memory
Hello ,

I would like to know how to check if a given process id belongs to particualr shared memory segment .

Please help

Thanks in advance
# 2  
Old 10-23-2009
A shared memory segment is not owned by a process but rather is pinned in memory and is owned by a user / group. Multiple processes can access the shared memory segments with the right credentials. You can check the segment and who owns them by typing:
Code:
ipcs -ma

as user root.
# 3  
Old 10-23-2009
Yes I realized
I realized that the CPID is the creator process id and from there I could
trace all the active processes that are accessing a particular shared memory segment.
# 4  
Old 10-23-2009
I see... I would tend to think that from a process' perspective it is not relevant who the CPID is. To find out who are using a shared memory segment I would look at the processes and see what regions they have mapped using a utility like e.g. pmap and/or perhaps info in /proc/pid if you are on a linux system.
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