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Full Discussion: Database table and Shared mem Sync issues
Special Forums UNIX and Linux Applications Infrastructure Monitoring Database table and Shared mem Sync issues Post 302394768 by trendzy2010 on Friday 12th of February 2010 12:55:23 PM
Old 02-12-2010
OK let me put it this way; Process A updates the memory maintained by B using APIs exposed by B in say B.so lib. The DB operations are independent of shared mem.
Giving little more details on the project:-
Our's is VoIP switch that is used to make calls. So whenever an endpoint is involved in a call the call counter (maintained in B's mem) is incremented. So this means that even if there are 100s of endpoints provisioned in DB there may be no calls made. So the B's mem will always contain the active endpoints that've actually involved in the call. The counters that I mentioned were Resource usage counters.

@Corona688
Any help'd be greatly appreciated!
 

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LEARN ABOUT REDHAT

ipc

IPC(2)							     Linux Programmer's Manual							    IPC(2)

NAME

       ipc - System V IPC system calls

SYNOPSIS

       int ipc(unsigned int call, int first, int second, int third, void *ptr, long fifth);

DESCRIPTION

       ipc()  is  a  common  kernel entry point for the System V IPC calls for messages, semaphores, and shared memory.  call determines which IPC
       function to invoke; the other arguments are passed through to the appropriate call.

       User programs should call the appropriate functions by their usual names.  Only standard library implementors and kernel  hackers  need	to
       know about ipc().

CONFORMING TO

       ipc() is Linux specific, and should not be used in programs intended to be portable.

SEE ALSO

       msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semget(2), semop(2), shmat(2), shmctl(2), shmdt(2), shmget(2)

Linux 1.2.4							    1995-04-15								    IPC(2)
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