StackOverflow Questions for Tag: stdatomic

Julian Stecklina

Reputation: 1281

Can atomic loads be merged in the C++ memory model?

c++language-lawyercompiler-optimizationmemory-modelstdatomic

Score: 22

Answers: 2

albert

Reputation: 507

std::atomic<T>::wait - is spurious wakeup possible or not?

c++c++20stdatomicspurious-wakeup

Score: 5

Answers: 2

Fosky etm

Reputation: 63

Is it necessary to call load() before compare_exchange_strong()？

c++atomicmemory-barriersstdatomiccompare-and-swap

Score: 5

Answers: 2

untitled

Reputation: 429

Can we not add an acquire barrier when locking if there is no release (unlock) from other threads?

catomicmemory-barriersstdatomic

Score: 1

Answers: 1

Ignorant

Reputation: 2681

What is the difference between sequential consistency and acquire/release semantics?

c++multithreadinglock-freememory-barriersstdatomic

Score: 2

Answers: 2

yupe

Reputation: 127

atomic_compare_exchange_weak/strong uncontrolled behavior

cstdatomic

Score: 0

Answers: 0

kingmeng

Reputation: 73

C++ Atomic compare_exchange_weak succeeds the second time, even though I haven't changed expected?

c++c++11atomicstdatomiccompare-and-swap

Score: 2

Answers: 1

Hans Müller

Reputation: 9

Why is there no atomic::try_load_for and try_store_for, similar to timed_mutex in C++?

c++multithreadingstdstdatomic

Score: 0

Answers: 1

Netch

Reputation: 4582

Why is acquire semantics only for reads, not writes? How can an LL/SC acquire CAS take a lock without the store reordering with the critical section?

assemblycpu-architecturestdatomiccompare-and-swapspinlock

Score: 4

Answers: 3

Nate Eldredge

Reputation: 58663

For purposes of ordering, is atomic read-modify-write one operation or two?

c++atomicmemory-barriersstdatomic

Score: 16

Answers: 2

kan

Reputation: 28981

std::atomic<int> memory_order_relaxed VS volatile sig_atomic_t in a multithreaded program

c++multithreadingvolatilememory-modelstdatomic

Score: 9

Answers: 1

PeteC

Reputation: 1067

Why don't compilers merge redundant std::atomic writes?

c++multithreadingc++11compiler-optimizationstdatomic

Score: 65

Answers: 9

DDG

Reputation: 169

busy waiting with atomic<bool>

c++atomicstdatomic

Score: 1

Answers: 1

Leandros

Reputation: 16825

Why does a std::atomic store with sequential consistency use XCHG?

c++assemblyx86lock-freestdatomic

Score: 8

Answers: 1

Егор Ермаков

Reputation: 21

Two instances of the same struct with same field values in are not bitwise-equal

c++structstdatomiccompare-and-swap

Score: 2

Answers: 1

Eric Z

Reputation: 14535

Understanding std::atomic::compare_exchange_weak() in C++11

c++multithreadingc++11atomicstdatomic

Score: 118

Answers: 6

Afshin

Reputation: 9173

Comparing 2 method of C++ ref-counting

c++memory-barriersstdatomicreference-counting

Score: 5

Answers: 2

Osama Ahmad

Reputation: 2096

What would it take to implement a mutex using std::atomic?

c++multithreadingconcurrencylockingstdatomic

Score: 3

Answers: 1

meisel

Reputation: 2459

Why would my C++ stdlib's shared_ptr use acq_rel ordering when decrementing the atomic ref count?

c++shared-ptrstdatomic

Score: 5

Answers: 1

Shane

Reputation: 23

C++ Multi-threading: Visible side-effects of non-atomic variables

c++c++11language-lawyerlock-freestdatomic

Score: 2

Answers: 2

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StackOverflow Questions for Tag: stdatomic

Can atomic loads be merged in the C++ memory model?

std::atomic&lt;T&gt;::wait - is spurious wakeup possible or not?

Is it necessary to call load() before compare_exchange_strong()？

Can we not add an acquire barrier when locking if there is no release (unlock) from other threads?

What is the difference between sequential consistency and acquire/release semantics?

atomic_compare_exchange_weak/strong uncontrolled behavior

C++ Atomic compare_exchange_weak succeeds the second time, even though I haven&#39;t changed expected?

Why is there no atomic::try_load_for and try_store_for, similar to timed_mutex in C++?

Why is acquire semantics only for reads, not writes? How can an LL/SC acquire CAS take a lock without the store reordering with the critical section?

For purposes of ordering, is atomic read-modify-write one operation or two?

std::atomic&lt;int&gt; memory_order_relaxed VS volatile sig_atomic_t in a multithreaded program

Why don&#39;t compilers merge redundant std::atomic writes?

busy waiting with atomic&lt;bool&gt;

Why does a std::atomic store with sequential consistency use XCHG?

Two instances of the same struct with same field values in are not bitwise-equal

Understanding std::atomic::compare_exchange_weak() in C++11

Comparing 2 method of C++ ref-counting

What would it take to implement a mutex using std::atomic?

Why would my C++ stdlib&#39;s shared_ptr use acq_rel ordering when decrementing the atomic ref count?

C++ Multi-threading: Visible side-effects of non-atomic variables

std::atomic<T>::wait - is spurious wakeup possible or not?

C++ Atomic compare_exchange_weak succeeds the second time, even though I haven't changed expected?

std::atomic<int> memory_order_relaxed VS volatile sig_atomic_t in a multithreaded program

Why don't compilers merge redundant std::atomic writes?

busy waiting with atomic<bool>

Why would my C++ stdlib's shared_ptr use acq_rel ordering when decrementing the atomic ref count?