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Intel Inspector reports a data race in my spinlock implementation

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I made a very simple spinlock using the Interlocked functions in Windows and tested it on a dual-core CPU (two threads that increment a variable); The program seems to work OK (it gives the same result every time, which is not the case when no synchronization is used), but Intel Parallel Inspector says that there is a race condition at value += j (see the code below). The warning disappears when using Critical Sections instead of my SpinLock. Is my implementation of SpinLock correct or not ? It's really strange, because all the used operations are atomic and have the proper memory barriers and

Intel Inspector reports a data race in my spinlock implementation

阅读更多关于 Intel Inspector reports a data race in my spinlock implementation

问题 I made a very simple spinlock using the Interlocked functions in Windows and tested it on a dual-core CPU (two threads that increment a variable); The program seems to work OK (it gives the same result every time, which is not the case when no synchronization is used), but Intel Parallel Inspector says that there is a race condition at value += j (see the code below). The warning disappears when using Critical Sections instead of my SpinLock. Is my implementation of SpinLock correct or not ?

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