Message Passing (Send)

Message Passing (Receive)

• Receive can be blocking
  • A process makes a system call to receive a message.
    • If message is not available, the process is made to sleep (wait) and woken up when message is received.
• Receive can be non-blocking
  • Process makes a system call to receive a message.
    • Return value from the system call determines whether a message is ready or not.