What is the purpose of interlocked class in .NET?

Interlocked class belongs to System.Threading namespace. When two threads try to update same variables or when two threads are concurrently executing there are chances of many error occurrences and incorrect data updation.

• Increment - Used to increment a variable’s value and store its result. Int32 and Int64 integers are its legal parameters.
• Decrement– Used to decrement a variable’s value and store its result. Int32 and Int64 integers are its legal parameters.
• Exchange– Used to exchange values between variables. This method has seven overloaded versions based on the different types it can accept as parameter.
• CompareExchange - Compares two variables and stores the result of comparison in another variable. This method also has seven overloaded versions.
• Add – Adds two integer variables and updates the result in the first integer variable. It is used to add integers of type Int32 as well as Int64.
• Read – Reads an integer variable. It is used to read an integer of type Int64.

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