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- What does atomic mean in programming? - Stack Overflow
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
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++ - the gist behind atomic shared pointer - Stack Overflow
At least atomic<shared_ptr<T>> gives you per-object locking, instead of a single lock for the whole stack So multiple threads can be waiting for different locks if multiple pops start in parallel
- Is there a difference between the _Atomic type qualifier and type . . .
Why the standard make that difference? It seems as both designate, in the same way, an atomic type
- c++ - Cross-platform Support for 128-bit Atomic Operations in Clang . . .
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 point is the
- c++ - What is the difference between load store relaxed atomic and . . .
11 The difference is that a normal load store is not guaranteed to be tear-free, whereas a relaxed atomic read write is Also, the atomic guarantees that the compiler doesn't rearrange or optimise-out memory accesses in a similar fashion to what volatile guarantees (Pre-C++11, volatile was an essential part of rolling your own atomics
- linux - Is rename () atomic? - Stack Overflow
But rename() is still atomic in a very important sense: if you use it to overwrite a file, then you will end up with either the old or the new version and nothing else [update: but as @jonas-wielicki points out in the comments, you need to make sure the file you are renaming actually has up-to-date contents, using fsync() and friends ]
- 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
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