What does "atomic" mean in programming? - Stack Overflow
"An operation acting on shared memory is atomic if it completes in a single step relative to other threads. When an atomic store is performed on a shared memory, no other thread can …
What are atomic operations for newbies? - Stack Overflow
Sep 6, 2018 · Here, each upsert is atomic: the first one left count at 2, the second one left it at 3. Everything works. Note that "atomic" is contextual: in this case, the upsert operation only …
c++ - How to implement an atomic counter - Stack Overflow
Sep 18, 2023 · std::atomic<int> id{0}; int create_id() { id++; return id.load(); } But I assume it's possible for that function to return the same value twice, right? For example, thread A calls the …
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 …
c++ - What exactly is std::atomic? - Stack Overflow
Aug 13, 2015 · std::atomic<> wraps operations that, in pre-C++ 11 times, had to be performed using (for example) interlocked functions with MSVC or atomic bultins in case of GCC. Also, …
atomic operations and atomic transactions - Stack Overflow
Mar 27, 2013 · Atomic Operations on the other hand are usually associated with low-level programming with regards to multi-processing or multi-threading applications and are similar to …
R Error in x$ed : $ operator is invalid for atomic vectors
Because $ does not work on atomic vectors. Use [or [[instead. From the help file for $:. The default methods work somewhat differently for atomic vectors, matrices/arrays and for …
What are atomic types in the C language? - Stack Overflow
Dec 26, 2020 · The type sig_atomic_t is always an integer data type, but which one it is, and how many bits it contains, may vary from machine to machine. Data Type: sig_atomic_t This is an …
difference between standard's atomic bool and atomic flag
Sep 5, 2016 · std::atomic<bool> std::atomic_flag. The std::atomic_flag contains the following explanation: std::atomic_flag is an atomic boolean type. Unlike all specializations of …
What's the difference between the atomic and nonatomic attributes?
Feb 26, 2009 · Atomicity property attributes (atomic and nonatomic) are not reflected in the corresponding Swift property declaration, but the atomicity guarantees of the Objective-C …