Scrie un software

Making a communication program for mail box from 10 threads. The number of mailboxes is limited at 5. Each thread can send and / or receive messages from any other thread but if all the mailboxes are full, the request of the sender must be placed in a waiting queue. The role of message manager (identification of the author and transmitting the message to the recipient) vests a thread 'supervisor' who regularly explores the mailboxes, regardless of how threads of workers' (which produce messages).