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NF:winnt.InterlockedOr |
InterlockedOr function (winnt.h) |
Performs an atomic OR operation on the specified LONG values. |
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base\interlockedor.htm |
backup |
c677e9fb-4188-466a-8283-9d65a50d150e |
12/05/2018 |
InterlockedOr, InterlockedOr function, base.interlockedor, winnt/InterlockedOr |
winnt.h |
Windows.h |
Windows |
Windows |
19H1 |
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Performs an atomic OR operation on the specified LONG values. The function prevents more than one thread from using the same variable simultaneously.
A pointer to the first operand. This value will be replaced with the result of the operation.
The second operand.
The function returns the original value of the Destination parameter.
The interlocked functions provide a simple mechanism for synchronizing access to a variable that is shared by multiple threads. This function is atomic with respect to calls to other interlocked functions.
For the Intel Itanium-based systems and x64 architectures, this function is implemented using the compiler intrinsic. For the x86 architecture, use the _InterlockedOr compiler intrinsic directly.
This function generates a full memory barrier (or fence) to ensure that memory operations are completed in order.
Itanium-based systems: For performance-critical applications, use InterlockedOrAcquire or InterlockedOrRelease instead.