Question

In all computer system, there is a component of the system which provides fundamental mutual exclusion protection. what is this component, why does it provide mutual exclusion and why is it insufficient to protect against asynchrony?

Answer 1

• The component of the system which provides fundamental mutual exclusion protection is Shared memory. It should be accompanied by a flag.
• Concurrent Processes need to share the data or the resources. For this, shared memory concept is used. But simultaneous access can lead to data inconsistency in the memory. To avoid this problem shared memory with a flag is used. If a process is using the memory, it will set the flag and other process will not be able to use it until the flag is reset.
• It provides both synchronous and asynchronous memory operations.