File locking
File locking is a mechanism that restricts access to a computer file by allowing only one user or process access at any specific time. Systems implement locking to prevent the classic interceding update scenario, which is a typical example of race condition, by enforcing the serialization of update processes to any given file. The following example illustrates the interceding update problem:
Process A reads a customer record from a file containing account information, including the customer's account balance and phone number.
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