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Kensington Security lock: unlocked, locked The Kensington Security Slot is the rightmost opening on the side of this Acer Swift 3 laptop computer. The Kensington Security Slot (also called a K-Slot or Kensington lock) is an anti-theft system for hardware electronics such as notebook computers, computer monitors and others. It is a small, metal ...
A computer lock is a physical lock on a computer with an accompanying key used for access control or as an anti-theft system. History. In the 1980s and early 1990s, ...
In computer science, a lock or mutex (from mutual exclusion) is a synchronization primitive that prevents state from being modified or accessed by multiple threads of execution at once. Locks enforce mutual exclusion concurrency control policies, and with a variety of possible methods there exist multiple unique implementations for different ...
File locking is a mechanism that restricts access to a computer file, or to a region of a file, by allowing only one user or process to modify or delete it at a specific time, and preventing reading of the file while it's being modified or deleted.
; Intel syntax locked:; The lock variable. 1 = locked, 0 = unlocked. dd 0 spin_lock: mov eax, 1; Set the EAX register to 1. xchg eax, [locked]; Atomically swap the EAX register with; the lock variable.; This will always store 1 to the lock, leaving; the previous value in the EAX register. test eax, eax; Test EAX with itself.
Restart the computer • If you haven't recently restarted your computer or you don't restart your computer very often, we recommend that you restart the computer. This helps clear the internal memory (RAM), which often resolves many issues.
Deadlock (locksmithing) or deadbolt, a physical door locking mechanism Deadlock (computer science) , a situation where two processes are each waiting for the other to finish Political deadlock or gridlock, a situation of difficulty passing laws that satisfy the needs of the people
As shown in the figure, [3] in the case of mutual exclusion , one thread blocks a critical section by using locking techniques when it needs to access the shared resource, and other threads must wait their turn to enter the section. This prevents conflicts when two or more threads share the same memory space and want to access a common resource.