What is volatile storage specifier where is it used?

The volatile is used in different places. For memory mapped peripheral registers, some global variables, that are accessed by some other functions or interrupt service routines, or in some multi-threaded applications, the volatile can be used.

How does volatile memory work?

Volatile memory, in contrast to non-volatile memory, is computer memory that requires power to maintain the stored information; it retains its contents while powered on but when the power is interrupted, the stored data is quickly lost. Most general-purpose random-access memory (RAM) is volatile.

What is volatile keyword and where we can use?

Volatile keyword is used to modify the value of a variable by different threads. It is also used to make classes thread safe. It means that multiple threads can use a method and instance of the classes at the same time without any problem. The volatile keyword can be used either with primitive type or objects.

What is volatile used for in C?

A volatile keyword in C is nothing but a qualifier that is used by the programmer when they declare a variable in source code. It is used to inform the compiler that the variable value can be changed any time without any task given by the source code. Volatile is usually applied to a variable when we are declaring it.

Why is volatile used in C?

The volatile keyword is intended to prevent the compiler from applying any optimizations on objects that can change in ways that cannot be determined by the compiler. Objects declared as volatile are omitted from optimization because their values can be changed by code outside the scope of current code at any time.

What is volatile memory examples?

Difference between Volatile Memory and Non-Volatile Memory

What is the meaning of volatile memory also give an example of volatile memory?

Volatile memory is a type of storage whose contents are erased when the system’s power is turned off or interrupted. An example of volatile memory is RAM (random access memory). If the computer you’re using is disconnected from power, your work is lost because it was not stored in permanent (non-volatile) memory.

What is volatile pointer in C?

volatile int* p; is a pointer to an int that the compiler will treat as volatile . This means that the compiler will assume that it is possible for the variable that p is pointing at to have changed even if there is nothing in the source code to suggest that this might occur.

What does volatile variable in C indicate?

C’s volatile keyword is a qualifier that is applied to a variable when it is declared. It tells the compiler that the value of the variable may change at any time–without any action being taken by the code the compiler finds nearby.

What is volatile and non volatile in C?

volatile vs non volatile If a variable is declared with volatile keyword in a C program, the variable will have special properties compare to non-volatile variables. Volatile variables are not altered by compiler during optimization run. Hence volatile keyword prevent variable to be optimized.

What is the use of volatile qualifier?

The volatile qualifier declares a data object that can have its value changed in ways outside the control or detection of the compiler (such as a variable updated by the system clock or by another program).