http://www.bing.com:80/search?q=Atomic+Design+PatternSearch resultshttp://www.bing.com:80/s/a/rsslogo.gifhttp://www.bing.com:80/search?q=Atomic+Design+PatternCopyright © 2026 Microsoft. All rights reserved. These XML results may not be used, reproduced or transmitted in any manner or for any purpose other than rendering Bing results within an RSS aggregator for your personal, non-commercial use. Any other use of these results requires express written permission from Microsoft Corporation. By accessing this web page or using these results in any manner whatsoever, you agree to be bound by the foregoing restrictions.https://stackoverflow.com/questions/15054086/what-does-atomic-mean-in-programming22 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.Thu, 09 Apr 2026 04:11:00 GMThttps://stackoverflow.com/questions/79671752/cross-platform-support-for-128-bit-atomic-operations-in-clang-compare-and-swapWe 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 theThu, 09 Apr 2026 20:46:00 GMThttps://stackoverflow.com/questions/31978324/what-exactly-is-stdatomicObjects 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.Thu, 09 Apr 2026 11:14:00 GMThttps://stackoverflow.com/questions/71866535/which-types-on-a-64-bit-computer-are-naturally-atomic-in-gnu-c-and-gnu-c-mI 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.Tue, 07 Apr 2026 17:43:00 GMThttps://stackoverflow.com/questions/69999379/what-does-stdatomicis-always-lock-free-true-really-meanIf for some type T the library has been able to specialize std::atomic<T> with such an implementation, then that is what we mean by saying it is lock free. (It is just confusing on x86 because the atomic instructions used for such implementations are named lock.Thu, 09 Apr 2026 14:13:00 GMThttps://stackoverflow.com/questions/17914630/when-should-stdatomic-compare-exchange-strong-be-usedThere are two atomic CAS operations in C++11: atomic_compare_exchange_weak and atomic_compare_exchange_strong. According to cppreference: The weak forms of the functions are allowed to fail spurio...Wed, 08 Apr 2026 18:32:00 GMThttps://stackoverflow.com/questions/63810298/what-is-the-difference-between-load-store-relaxed-atomic-and-normal-variable11 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.Mon, 06 Apr 2026 22:09:00 GMThttps://stackoverflow.com/questions/25199838/understanding-stdatomiccompare-exchange-weak-in-c11In addition (and more importantly), note that std::atomic must support all operations for all possible data types, so even if you declare a ten million byte struct, you can use compare_exchange on this.Mon, 06 Apr 2026 11:46:00 GMThttps://stackoverflow.com/questions/16320838/when-do-i-really-need-to-use-atomicbool-instead-of-boolYou 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.Wed, 08 Apr 2026 00:24:00 GMThttps://stackoverflow.com/questions/79381627/the-gist-behind-atomic-shared-pointerAt 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.Thu, 02 Apr 2026 20:33:00 GMT