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, …
c++ - What exactly is std::atomic? - Stack Overflow
Aug 13, 2015 · I understand that std::atomic<> is an atomic object. But atomic to what extent? To my understanding an operation can be atomic. What exactly is meant by making an …
When do I really need to use atomic<bool> instead of bool?
May 1, 2013 · You need atomic<bool> to avoid race-conditions. A race-condition occurs if two threads access the same memory location, and at least one of them is a write operation. If …
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 …
Is there a difference between the _Atomic type qualifier and type ...
Oct 20, 2014 · Atomic type specifiers :-:) Syntax: _Atomic ( type-name ); You can declare an atomic integer like this: _Atomic(int) counter; The _Atomic keyword can be used in the form …
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 …
What's the difference between the atomic and nonatomic attributes?
Feb 26, 2009 · The last two are identical; "atomic" is the default behavior (note that it is not actually a keyword; it is specified only by the absence of nonatomic -- atomic was added as a …
c++ - Are +=, |=, &= etc atomic? - Stack Overflow
2 ++ might be atomic on your compiler/platform, but in the c++ specs it is not defined to be atomic. If you want to make sure to modify a value in an atomic way, you should use the appropiate …
atomic operations and atomic transactions - Stack Overflow
Mar 27, 2013 · Can someone explain to me, whats the difference between atomic operations and atomic transactions? Its seems to me that these two are the same thing.Is that correct?
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.