Lock Variable
A lock variable, also called a mutex (mutual exclusion), serves as a synchronization primitive to protect critical sections of code against simultaneous access by multiple processes or threads. It ensures exclusive access to shared resources, effectively preventing race conditions and conflicts. When a process or thread needs to access a resource protected by a lock variable, it must request the lock. If another process already holds the lock, the requesting process will be required to wait until the lock is released.
Lock variables, in their various forms like binary semaphores or mutexes, serve as crucial tools for coordinating processes’ access to shared resources. By ensuring that only one process can enter the critical section at a time, lock variables enable efficient and synchronized utilization of these resources.
Difference Between Lock variable and Turn variable in Operating System
In operating systems, effective and reliable synchronization mechanisms play a vital role in managing concurrency and coordinating the activities of multiple processes or threads. Two essential tools for synchronization are lock variables and turn variables, each serving distinct purposes and having unique characteristics. In this article, we will explore the key differences between lock variable and turn variables
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