For many years, cesium atomic clocks have been reliably keeping time around the world. But the future belongs to even more accurate clocks: optical atomic clocks. In a few years' time, they could ...
One of the best features of the PS5 is the Tempest 3D Audio because it helps to make your gameplay experience more immersive, and soon players will be able to create a personalized 3D Audio profile to ...
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 …
2 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 …
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 …
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 …
There 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 …
In 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 …
There is the proposal P1478R8: Byte-wise atomic memcpy, which covers my exact use case. This proposal suggests to add atomic_load_per_byte_memcpy and …
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 …
So, this means that Richard Barry is saying that 4-byte reads and writes are atomic on these 32-bit microcontrollers. This means that he, at least, is 100% sure 4-byte reads and writes are atomic on …
Are C/C++ fundamental types, like int, double, etc., atomic, e.g. threadsafe? Are they free from data races; that is, if one thread writes to an object of such a type while another thread reads fr...
Which types on a 64-bit computer are naturally atomic in gnu C and gnu ...
Phys.org: Innovative optical atomic clock could combine single-ion accuracy with multi-ion stability
MSN: Explainer: What is an atomic clock and why it is crucial for navigation satellites
Ten years after it was placed in orbit as part of the four-spacecraft Indian Regional Navigation Satellite System, the IRNSS-1F’s onboard imported atomic clock, a critical component for providing ...
Explainer: What is an atomic clock and why it is crucial for navigation satellites
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.
2 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 Windows API function InterlockedCompareExchange128, which performs an atomic compare-and-swap on 128-bit values. We’re trying to determine:
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.
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.
There 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...
In 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.
There is the proposal P1478R8: Byte-wise atomic memcpy, which covers my exact use case. This proposal suggests to add atomic_load_per_byte_memcpy and atomic_store_per_byte_memcpy to a new header bytewise_atomic_memcpy, which can copy bytewise using atomic semantics. How are sequence locks correctly implemented in C++ up to C++23?
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...
So, this means that Richard Barry is saying that 4-byte reads and writes are atomic on these 32-bit microcontrollers. This means that he, at least, is 100% sure 4-byte reads and writes are atomic on STM32. He doesn't mention smaller-byte reads, but for 4-byte reads he is conclusively sure.
A low-noise chip-scale atomic clock (LN-CSAC), the SA65-LN from Microchip, features a profile height of less than 0.5 in. (12.7 mm). Aimed at aerospace and defense applications where size, weight, and ...
Quanta Magazine: In Our Cellular Clocks, She’s Found a Lifetime of Discoveries
The Hill: Daylight saving: Why these two states didn’t change their clocks this morning
Daylight saving: Why these two states didn’t change their clocks this morning
This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Clocks "spring forward" in the U.S. and Canada on March 8 and in the U.K. and Europe on ...
The Hill: Senate hearing on daylight saving time set: Could the US ‘lock the clocks?’
(NEXSTAR) — Roughly a month ago, most Americans lost an hour of precious Sunday sleep as daylight saving time began and our clocks jumped forward. The U.S. again could be on the precipice of ending ...
Senate hearing on daylight saving time set: Could the US ‘lock the clocks?’