Breaking News: Grepper is joining You.com. Read the official announcement!

benefits of volatile keyword

Deepika Sahu answered on December 15, 2022 Popularity 2/10 Helpfulness 1/10

answer benefits of volatile keyword

benefits of volatile keyword

Comment

8


When a multithreaded program is running, and there is some shared variable which isn't declared as volatile, what these threads do is create a local copy of the variable, and work on the local copy instead. So the changes on the variable aren't reflected. This local copy is created because cached memory access is much faster compared to accessing variables from main memory.

When you declare a variable as volatile, it tells the program NOT to create any local copy of the variable and use the variable directly from the main memory.

By declaring a variable as volatile, we are telling the system that its value can change unexpectedly from anywhere, so always use the value which is kept in the main memory and always make changes to the value of the variable in the main memory and not create any local copies of the variable.

Note that volatile is not a substitute for synchronization, and when a field is declared volatile, the compiler and runtime are put on notice that this variable is shared and that operations on it should not be reordered with other memory operations. Volatile variables are not cached in registers or in caches where they are hidden from other processors, so a read of a volatile variable always returns the most recent write by any thread.

Popularity 2/10 Helpfulness 1/10 Language typescript

Source: Grepper

Tags: keyword typescript volatile

Link to this answer
Share Copy Link

Contributed on Dec 15 2022

Deepika Sahu

0 Answers Avg Quality 2/10

benefits of volatile keyword

Contents

More Related Answers

benefits of volatile keyword

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.