communication between main() and thread()

Question

I have a question about threads communication. there is client and server.

server:

1. main function- its job is to listen to some port (TCP communication) and get commands from the client
2. the thread job is to transmit video fluently to the client.

client:

1. main function- transmit commands to server
2. thread- watch the video

the TCP\video part works fine. after the main function of the server, got the command from the client, I need to send the command to the video thread and send back from the video thread to the server's main- "o.k" .

the problem is to send commands from the server's main, to the video thread and vice versa.

its enough that the command will be one variable..

any ideas? thanks!

Answer 1

The pipe is a bad approach towards two way communication, you could use, shared memory. In shared memory, both processes have access to some memory that can be used read or write, such that writes in one are visible in the reads of the other and vice versa.

for more details on shared memory http://www.cs.cf.ac.uk/Dave/C/node27.html