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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
Is there a difference between the _Atomic type qualifier and type . . . 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
sql - What is atomicity in dbms - Stack Overflow 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
What are atomic types in the C language? - Stack Overflow 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
What are atomic operations for newbies? - Stack Overflow 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
thread safety - Atomic operations in ARM - Stack Overflow I've been working on an embedded OS for ARM, However there are a few things i didn't understand about the architecture even after referring to ARMARM and linux source Atomic operations ARM ARM
c++ - What exactly is std::atomic? - Stack Overflow I understand that std::atomic lt; gt; is an atomic object But atomic to what extent? To my understanding an operation can be atomic What exactly is meant by making an object atomic? For example if
difference between standards atomic bool and atomic flag The primary difference besides the lock-free guarantee is: std::atomic_flag does not provide load or store operations and when should I use which? Usually, you will want to use std::atomic<bool> when you need an atomic boolean variable std::atomic_flag is a low level structure that can be used to implement custom atomic structures
Whats the difference between the atomic and nonatomic attributes? 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 keyword in recent versions of llvm clang) Assuming that you are @synthesizing the method implementations, atomic vs non-atomic changes the generated code If you are writing your own setter getters, atomic nonatomic
c++ - How to implement an atomic counter - Stack Overflow The value-initializing constructor of an atomic is constexpr, so that that leads to a constant-initialization as well Kinda makes sense because that is how it should be, with a compiler that knows what it is doing ;)