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InterlockedOr64Acquire function

Performs an atomic OR operation on the specified LONGLONG values. The operation is performed with acquire memory ordering semantics. The function prevents more than one thread from using the same variable simultaneously.

Syntax

LONGLONG __cdecl InterlockedOr64Acquire(
  _Inout_ LONGLONG volatile *Destination,
  _In_    LONGLONG          Value
);

Parameters

  • Destination [in, out]
    A pointer to the first operand. This value will be replaced with the result of the operation.

  • Value [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_acq.

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

 

Requirements

Header

WinBase.h (include Windows.h)

See also

Interlocked Variable Access

InterlockedOr

InterlockedOrAcquire

InterlockedOrRelease

InterlockedOrNoFence

InterlockedOr8

InterlockedOr8Acquire

InterlockedOr8Release

InterlockedOr8NoFence

InterlockedOr16

InterlockedOr16Acquire

InterlockedOr16Release

InterlockedOr16NoFence

InterlockedOr64

InterlockedOr64Release

InterlockedOr64NoFence

Synchronization Functions