[RESOLVED] Questions about a sample code on shared memory.

[vincegata]

Hi,

I attached a sample code of shared memory that I downloaded from somewhere. However there are few things about it:

1. Producer must be started first, o.w. consumer gives an error: "shm_open: No such file or directory". -- I want to be able to start the processes in any order.
2. If Producer restarts, then Consumer must be restarted as well. -- That's very inconvenient, if my producer goes down then I'd have to restart Consumer as well.
3. Consumer takes 100% of CPU time of one core. -- I think that's because Consumer is polling the buffer, can it be resolved using semaphores?

Someone could comment how to resolve those?

THX