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InterlockedOr64NoFence function

Performs an atomic OR operation on the specified LONGLONG values. The operation is performed atomically, but without using memory barriers. The function prevents more than one thread from using the same variable simultaneously.

Syntax


LONGLONG __cdecl InterlockedOr64NoFence(
  _Inout_ LONGLONG volatile *Value,
  _In_    LONGLONG          Mask
);

Parameters

Value [in, out]

A pointer to the first operand. This value will be replaced with the result of the operation.

Mask [in]

The second operand.

Return value

The function returns the original value of the Destination parameter.

Remarks

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.

This function is implemented using a compiler intrinsic where possible. For more information, see the WinBase.h header file and _InterlockedOr64_nf.

This function generates no memory barriers (or fences) and does not guarantee that independent memory operations before or after it are completed in order.

Note  This function is supported on Windows RT-based systems.

Requirements

Minimum supported client

Windows 8 [desktop apps only]

Minimum supported server

Windows Server 2012 [desktop apps only]

Header

Winnt.h (include Windows.h)

See also

Interlocked Variable Access
InterlockedOr
InterlockedOrAcquire
InterlockedOrRelease
InterlockedOrNoFence
InterlockedOr8
InterlockedOr8Acquire
InterlockedOr8Release
InterlockedOr8NoFence
InterlockedOr16
InterlockedOr16Acquire
InterlockedOr16Release
InterlockedOr16NoFence
InterlockedOr64
InterlockedOr64Acquire
InterlockedOr64Release
Synchronization Functions

 

 

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