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  • What are atomic types in the C language? - Stack Overflow
    I remember I came across certain types in the C language called atomic types, but we have never studied them So, how do they differ from regular types like int,float,double,long etc , and what are
  • What is the difference between std::shared_ptr and std::atomic lt;std . . .
    What is the exact difference between these two types of smart pointers? If the pointer in a std::shared_ptr instance is not atomic, why it is possible write the above lock-free stack implementation?
  • 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
  • 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
  • Why do we have both __atomic_store_n and __atomic_store
    I am working on a simple linux driver and I am trying to understand how the atomic built-ins for the gcc compiler work and how they optimize performance My question is: why do we need both __atomic_store and __atomic_store_n?
  • java - Volatile Vs Atomic - Stack Overflow
    Java volatile keyword doesn't mean atomic, its common misconception that after declaring volatile, ++ operation will be atomic, to make the operation atomic you still need to ensure exclusive access using synchronized method or block in Java So what will happen if two threads attack a volatile primitive variable at same time?
  • What are atomic operations for newbies? - Stack Overflow
    Everything works Note that "atomic" is contextual: in this case, the upsert operation only needs to be atomic with respect to operations on the answers table in the database; the computer can be free to do other things as long as they don't affect (or are affected by) the result of what upsert is trying to do
  • How to initialize a static std::atomic data member
    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
  • Concurrency: Atomic and volatile in C++11 memory model
    2) Atomic: Atomic operations modify data in a single clock tick, so that it is impossible for ANY other thread to access the data in the middle of such an update They're usually limited to whatever single-clock assembly instructions the hardware supports; things like ++,--, and swapping 2 pointers
  • c++ - Initializing std::atomic_bool? - Stack Overflow
    I want to use std::atomic_bool because I want to have a boolean which is supposed to be accessed by different threads It's a static member Variable The Problem is that I want to initialize it with





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