c++ - What exactly is std::atomic? - Stack Overflow
2015年8月13日 · 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 …
c++ - How to use std::atomic efficiently - Stack Overflow
2012年1月6日 · 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 …
What does "atomic" mean in programming? - Stack Overflow
2015年5月8日 · 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...
linux - How can I use atomic variables in C? - Stack Overflow
2014年8月15日 · The atomic counter is 10000 The non-atomic counter is 8644 The non-atomic counter is very likely to be smaller than the atomic one due to racy access across threads to the non atomic …
sql - What is atomicity in dbms - Stack Overflow
2014年6月4日 · 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 …
atomic operations and atomic transactions - Stack Overflow
2013年3月27日 · Can someone explain to me, whats the difference between atomic operations and atomic transactions? Its seems to me that these two are the same thing.Is that correct?
When do I really need to use atomic<bool> instead of bool?
2013年5月1日 · 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 …
Is there a difference between the _Atomic type qualifier and type ...
2014年10月20日 · Why the standard make that difference? It seems as both designate, in the same way, an atomic type.
What's the difference between the atomic and nonatomic attributes?
2009年2月26日 · 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 …
How to initialize a static std::atomic data member
0 Since std::atomic_init has been deprecated in C++20, here is a reimplementation which does not raise deprecation warnings, if you for some reason want to keep doing this.