PROCESS MANAGEMENT

Briefing on communications among processes

• Mechanism for processes to communicate and to synchronize their actions.
• Message system – processes communicate with each other without resorting to shared variables.
• IPC facility provides two operations:
• send(message) – message size fixed or variable
• receive(message)
• If P and Q wish to communicate, they need to:
• establish a communication link between them.
• exchange messages via send/receive.