
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. …
c++ - Cross-platform Support for 128-bit Atomic Operations in Clang ...
Jun 19, 2025 · 2 We are currently evaluating 128-bit atomic operation support across platforms and compilers, and I wanted to confirm the level of support available in Clang specifically. Our reference …
Using std::condition_variable with atomic<bool>
Mar 21, 2016 · There are several questions on SO dealing with atomic, and other that deal with std::condition_variable. But my question if my use below is correct? Three threads, one ctrl thread …
mongodb - MongoInvalidArgumentError: Update document requires …
Aug 18, 2021 · MongoInvalidArgumentError: Update document requires atomic operators Asked 4 years, 5 months ago Modified 3 years, 1 month ago Viewed 51k times
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 …
c - What are the various ways to disable and re-enable interrupts in ...
Mar 26, 2022 · For simple copies, some types are naturally atomic (if their size is <= the processor width, or 4 bytes, for example, for most 32-bit MCUs), and you won't need to disable and renable …
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...
java - Volatile boolean vs AtomicBoolean - Stack Overflow
Sep 24, 2010 · 5 Boolean primitive type is atomic for write and read operations, volatile guarantees the happens-before principle. So if you need a simple get () and set () then you don't need the …
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++ - How to implement an atomic counter - Stack Overflow
Sep 18, 2023 · Fortunately, the value initializing constructor of an integral atomic is constexpr, so the above leads to constant initialization. Otherwise you'd want to make it -say- a static member of a …