I would like to perform and atomic read of 64b aligned 64b data on x86 platform (Pentium or above guaranteed).
Is there a way to do this? (And no, I do not want to use a critical section or a mutex for this, I want this to be lock-free).
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I would like to perform and atomic read of 64b aligned 64b data on x86 platform (Pentium or above guaranteed).
Is there a way to do this? (And no, I do not want to use a critical section or a mutex for this, I want this to be lock-free).
Use the Interlocked operations, here’s some sample code:
This does the compare exchange against zero and sets p to zero if it’s already equal to zero -ie, it’s a noop. InterlockedCompareExchange returns the original 64 bit value pointed to by p.