UNDERSTANDING STD::ATOMIC::COMPARE_EXCHANGE_WEAK() IN C++11
Aug 8, 2014 In addition (and more importantly), note that std::atomic must support all operations for all possible data types, so even if you declare a ten million byte struct, you can use compare_exchange on this. From bing.com
WHEN SHOULD YOU USE STD::ATOMIC INSTEAD OF STD::MUTEX?
When is_lock_free returns false, it means that atomic has a lock, and equivalent performance with code with locks. This does not mean that you should always use atomic instead of mutex-based approach, conversely, if you expect is_lock_free to be always false, you should not use atomic: Use of atomic for such cases would be misleading first of all. From bing.com
Aug 2, 2016 I read this in the book C# 6.0 and the .NET 4.6 framework: “assignments and simple arithmetic operations are not atomic”. So, what does it exactly mean? From bing.com
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 part of the value. Eg: The current Wikipedia article on First NF (Normal Form) section Atomicity actually quotes from the introductory parts above. From bing.com
HOW ARE ATOMIC OPERATIONS IMPLEMENTED AT A HARDWARE LEVEL?
There are a few low level instructions used locking and atomic operations. These are used at the OS level to manipulate small chunks of memory to create things like mutexes and semaphores, these are literally one or two bytes of memory that need to have atomic, synchronized operations performed on them. From bing.com
WHAT DOES "ATOMIC" MEAN IN PROGRAMMING? - STACK OVERFLOW
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... From bing.com
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 what are... From bing.com
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 class that is wrapping this and put the initialization somewhere else. From bing.com
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 can be free to do other things as long as they don't affect (or are affected by) the result of what upsert is trying to do. From bing.com
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 _Atomic(T), where T is a type, as a type specifier equivalent to _Atomic T. Thus, _Atomic(T) x, y; declares x and y with the same type, even if T is a pointer type. This allows for trivial C++0x compatibility with a C++ only ... From bing.com
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