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  • c# - Volatile vs. Interlocked vs. lock - Stack Overflow
    With Interlocked Increment, the processor needs to go out, fetch the value from the address given, then increment and write it back -- all that while having exclusive ownership of the entire cache line (lock xadd) to make sure no other processors can modify its value
  • C# Interlocked functions as a lock mechanism? - Stack Overflow
    Interlocked can, however, help developers implement locking mechanism, though you might as well use the built-in ones Most locks require kernel support to interrupt the blocked thread until the lock becomes available
  • c# - Interlocked and volatile - Stack Overflow
    Interlocked operations and volatile are not really supposed to be used at the same time The reason you get a warning is because it (almost?) always indicates you have misunderstood what you are doing Over-simplifying and paraphrasing: volatile indicates that every read operation needs to re-read from memory because there might be other threads updating the variable When applied to a field
  • c# - using interlocked usage - Stack Overflow
    Interlocked Exchange and Interlocked CompareExchange return the value before modification (they'd be sorta useless if they returned the 'after' value)
  • C# multi-threaded unsigned increment - Stack Overflow
    I want to increment an unsigned integer from multiple threads I know about Interlocked Increment, but it does not handle unsigned integers I could use lock(), but I would rather not if possible
  • Reading an int thats updated by Interlocked on other threads
    The Interlocked methods impose full fences, while the Volatile methods impose half fences¹ So using the static methods of the Volatile class is a potentially more economic way of reading atomically the latest value of an int variable or field
  • c# - Interlocked - when do I use it? - Stack Overflow
    You do not need to use Interlocked Interlocked is for advanced users I suggest you use the lock C# statement and only use Interlocked for easy cases (increment a shared counter) or performance critical cases Interlocked can only be used to access a single variable at a time and only quite primitive operations are supported
  • How does Interlocked work and why is it faster than lock?
    Interlocked has support at the CPU level, which can do the atomic operation directly For example, Interlocked Increment is effectively an XADD, and compare and swap (ie: Interlocked CompareExchange) is supported via the CMPXCHG instructions (both with a LOCK prefix)
  • Why does Interlocked. Exchange not support Boolean type?
    Is there some practical reason why the NET team decided not to support Boolean in Interlocked Exchange operation? One of the usage examples is when you want to guarantee that some code is executed
  • Using Interlocked. CompareExchange with a class - Stack Overflow
    System Threading Interlocked CompareExchange operator provides atomic (thus thread-safe) C# implementation of the Compare-And-Swap operation For example int i = 5; Interlocked CompareExchange(re





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