Hi,
I'm using system v message queues to pass data between two separate processes (running on Linux). Most of the time there is no problem adding messages to the queue, but sometimes I keep getting the error showed below.

code:
if (msgsnd(msqid, data, size(data), IPC_NOWAIT) < 0)
{
perror("msgsnd");
exit(1);
}

Reported error:
'msgsnd: Resource temporarily unavailable'

I can't see any problem with my code. Also any time I get the error it wasn't because I exceeded the limit of messages
allowed on the queue.

Any help would be great!
Thanks