Signals

Signals

• Signal is a short message sent from a process for enabling inter process communication
• Signal is usually a one bit output comes from a process
• signal takes a shortest possible CPU time unlike Semaphores.
• Signals are useful for handling exceptions
• Whenever there is an error during a running of process, a signal is generated thereby the scheduler schedules a process to handle that error, in this way signals are used extensively for error and exception handling