What does "atomic" mean in programming? - Stack Overflow
25 Apr 2026 at 12:18am
22 Atomic vs. Non-Atomic Operations "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 observe the modification half-complete.
c++ - What exactly is std::atomic? - Stack Overflow
23 Apr 2026 at 7:33pm
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. In addition, accesses to atomic objects may establish inter-thread synchronization and order non-atomic memory accesses as specified by std::memory_order.
c++ - How to implement an atomic counter - Stack Overflow
22 Apr 2026 at 8:07am
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.
c++ - What is the difference between std::shared_ptr and std::atomic ...
23 Apr 2026 at 12:34am
The atomic "thing" in shared_ptr is not the shared pointer itself, but the control block it points to. meaning that as long as you don't mutate the shared_ptr across multiple threads, you are ok. do note that copying a shared_ptr only mutates the control block, and not the shared_ptr itself.
c++ - How to use std::atomic efficiently - Stack Overflow
24 Apr 2026 at 2:21am
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...
What are atomic operations for newbies? - Stack Overflow
25 Apr 2026 at 7:02pm
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
23 Apr 2026 at 7:25pm
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's the difference between the atomic and nonatomic attributes?
24 Apr 2026 at 3:32am
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 ...
When do I really need to use atomic instead of bool?
24 Apr 2026 at 9:12pm
You need atomic 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.
What are atomic types in the C language? - Stack Overflow
25 Apr 2026 at 12:21pm
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 IS THIS? This is an unscreened compilation of results from several search engines. The sites listed are not necessarily recommended by Surfnetkids.com.
25 Apr 2026 at 12:18am
22 Atomic vs. Non-Atomic Operations "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 observe the modification half-complete.
c++ - What exactly is std::atomic? - Stack Overflow
23 Apr 2026 at 7:33pm
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. In addition, accesses to atomic objects may establish inter-thread synchronization and order non-atomic memory accesses as specified by std::memory_order.
c++ - How to implement an atomic counter - Stack Overflow
22 Apr 2026 at 8:07am
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.
c++ - What is the difference between std::shared_ptr and std::atomic ...
23 Apr 2026 at 12:34am
The atomic "thing" in shared_ptr is not the shared pointer itself, but the control block it points to. meaning that as long as you don't mutate the shared_ptr across multiple threads, you are ok. do note that copying a shared_ptr only mutates the control block, and not the shared_ptr itself.
c++ - How to use std::atomic efficiently - Stack Overflow
24 Apr 2026 at 2:21am
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...
What are atomic operations for newbies? - Stack Overflow
25 Apr 2026 at 7:02pm
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
23 Apr 2026 at 7:25pm
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's the difference between the atomic and nonatomic attributes?
24 Apr 2026 at 3:32am
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 ...
When do I really need to use atomic instead of bool?
24 Apr 2026 at 9:12pm
You need atomic 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.
What are atomic types in the C language? - Stack Overflow
25 Apr 2026 at 12:21pm
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 IS THIS? This is an unscreened compilation of results from several search engines. The sites listed are not necessarily recommended by Surfnetkids.com.
