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kresyzig 08-25-2010 10:50 PM
Total amount of allocated SHM memory?
 
Is there an easy way in C to get the total amount of allocated SHM memory on a machine?

Kenny_Strawn 08-26-2010 03:57 PM
It would probably be C's equivalent to the following shell command:

Code:
cat /dev/shm

Sergei Steshenko 08-26-2010 05:03 PM
Quote:
Originally Posted by Kenny_Strawn (Post 4078855)
It would probably be C's equivalent to the following shell command:

Code:
cat /dev/shm
?????

Code:
file /dev/shm
/dev/shm: sticky directory

Sergei Steshenko 08-26-2010 05:11 PM
man 2 shmctl

kresyzig 08-27-2010 07:05 AM
Quote:
Originally Posted by Sergei Steshenko (Post 4078909)
man 2 shmctl
This is what I was looking for. Thanks!

kresyzig 08-27-2010 05:33 PM
Quote:
Originally Posted by Sergei Steshenko (Post 4078909)
man 2 shmctl
Sorry this does not work. shmctl recognizes only System V shared memory and I am working with POSIX shm... Is there anything equivalent for POSIX shm?

Sergei Steshenko 08-27-2010 06:02 PM
Quote:
Originally Posted by kresyzig (Post 4080092)
Sorry this does not work. shmctl recognizes only System V shared memory and I am working with POSIX shm... Is there anything equivalent for POSIX shm?
Maybe
http://www.cs.cf.ac.uk/Dave/C/node27...00000000000000 .

kresyzig 08-28-2010 02:34 AM
Quote:
Originally Posted by Sergei Steshenko (Post 4080114)
Finally I have used opendir("/dev/shm") combined with readdir_r to get the size of the pseudo-files in /dev/shm/ /. This is the only way I have found to compute the total amount of shared memory. That works fine, I just don't know if there is a more optimal method...


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