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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.
How to guarantee 64-bit writes are atomic? - Stack Overflow
When can 64-bit writes be guaranteed to be atomic, when programming in C on an Intel x86-based platform (in particular, an Intel-based Mac running MacOSX 10.4 using the Intel compiler)? For exampl...
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.
Which types on a 64-bit computer are naturally atomic in gnu C and gnu ...
I had a 25-hr debugging marathon in < 2 days and then wrote this answer here. See also the bottom of this question for more info. and documentation on 8-bit variables having naturally atomic writes and naturally atomic reads for AVR 8-bit microcontrollers when compiled with the gcc compiler which uses the AVR-libc library.
linux - Is rename () atomic? - Stack Overflow
Yes and no. rename () is atomic assuming the OS does not crash. It cannot be split by any other filesystem op. If the system crashes you might see a ln () operation instead. (But see discussion on journalled filesystems in comments.) Also note, when operating on a network filesystem, you might get ENOENT when the operation succeeded successfully. Local filesystem can't do that to you.
Are primitive data types in c# atomic (thread safe)?
Yes an operation can be atomic or not, but there are specific data types that are referred to as being atomic types because they allow atomic operations due to their memory size requirements in regards to the word size on the system.
How do I add an atomic counter to a powershell ForEach -Parallel loop
7 In this question, it was explained how to add to a concurrent ThreadSafe collection Powershell: How to add Result to an Array (ForEach-Object -Parallel) I have a simpler use case , where I would just like to increment a single value. (Integer). Is it possible to do in Powershell using some sort of Atomic Integer data type?
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.
python - A safe, atomic file-copy operation - Stack Overflow
Is it only creation of the destination that needs to be atomic, but also having the source contents, as read, represent only a single point-in-time?
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