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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
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
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
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
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 recursive (list-like, see is recursive) objects $ is only valid for recursive objects, and is only discussed in the section below on recursive objects x[["ed"]] will work
When do I really need to use atomic lt;bool gt; instead of bool? 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 your program contains race-conditions, the behavior is undefined
assembly - How to implement atomic operation (s) on multi-core Cortex . . . Strange So how to implement atomic operations synchronization primitives on this platform? In the old-fashioned way using "enable interrupts" "disable interrupts"? Or am I missing something? E g ChromiumOS uses the old-fashioned method Disabling interrupts will work on single-core MCUs, but what about multi-core MCUs?