What does "atomic" mean in programming? - Stack Overflow
May 8, 2015 · In the Effective Java book, it states: The language specification guarantees that reading or writing a variable is atomic unless the variable is of type long or double [JLS, 17.4.7]. What do...
c++ - What exactly is std::atomic? - Stack Overflow
Aug 13, 2015 · Objects of atomic types are the only C++ objects that are free from data races; that is, if one thread writes to an atomic object while another thread reads from it, the behavior is well-defined. …
Is there a difference between the _Atomic type qualifier and type ...
Oct 20, 2014 · Why the standard make that difference? It seems as both designate, in the same way, an atomic type.
What are atomic operations for newbies? - Stack Overflow
Sep 6, 2018 · Everything works. Note that "atomic" is contextual: in this case, the upsert operation only needs to be atomic with respect to operations on the answers table in the database; the computer …
When do I really need to use atomic<bool> instead of bool?
May 1, 2013 · Closed 12 years ago. Isn't atomic<bool> redundant because bool is atomic by nature? I don't think it's possible to have a partially modified bool value. When do I really need to use …
sql - What is atomicity in dbms - Stack Overflow
Jun 4, 2014 · The definition of atomic is hazy; a value that is atomic in one application could be non-atomic in another. For a general guideline, a value is non-atomic if the application deals with only a …
What are atomic types in the C language? - Stack Overflow
Dec 26, 2020 · I remember I came across certain types in the C language called atomic types, but we have never studied them. So, how do they differ from regular types like int,float,double,long etc., and …
linux - How to use atomic variables in C? - Stack Overflow
Aug 15, 2014 · The atomic counter is 10000 The non-atomic counter is 8644 The non-atomic counter is very likely to be smaller than the atomic one due to racy access across threads to the non atomic …
c++ - How to use std::atomic efficiently - Stack Overflow
Jan 6, 2012 · std::atomic is new feature introduced by c++11 but I can't find much tutorial on how to use it correctly. So are the following practice common and efficient? One practice I used is we have a buff...
How to initialize a static std::atomic data member
Since std::atomic_init has been deprecated in C++20, here is a reimplementation which does not raise deprecation warnings, if you for some reason want to keep doing this.