LOCK VARIABLE | PROCESS SYNCHRONIZATION | LIMITATIONS OF LOCK VARIABLE | OPERATING SYSTEM
In this video, I have discussed about lock variable and its limitations
00:00 - Introduction
00:47 - Lock variable
01:13 - Busy waiting
02:46 - Working process of lock variable
07:59 - Limitation of lock variable
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A lock variable provides the simplest synchronization mechanism for processes. Some noteworthy points regarding Lock Variables are-
Its a software mechanism implemented in user mode, i.e. no support required from the Operating System.
Its a busy waiting solution (keeps the CPU busy even when its technically waiting).
It can be used for more than two processes.
When Lock = 0 implies critical section is vacant (initial value ) and Lock = 1 implies critical section occupied.
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