15. Lock Variable 🔒 || Operating System
In this video the following points are discussed:
1. When Multiple processes want to be executed, We execute them parallelly to reduce the response time.
2. If there is a variable which multiple processes want to access, then we should make sure that at a one time only one process access the shared variable (we call the shared variable as critical section) to get the right output without any conflicts.
3. To maintain the synchronization among processes, we take help of Entry section, Critical Section and Exit Section.
4. The Entry section contains the condition that restrict only one process to enter in to the critical section.
5. The Critical section contains the shared variable that a process want to access.
6. The Exit section contains the condition that will let the another process to access the critical section when one process already accessed the shared variable.
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