InterlockedOr

InterlockedOr performs an atomic OR operation on the specified LONG values. The function prevents more than one thread from using the same variable simultaneously.

Syntax

BOOL InterlockedOr(
        LONG volatile *Destination,
        LONG           Value
);

Parameters

Destination

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

Value

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.

For 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.

Requirements

Minimum Supported Version	RTX64 3.1
Header	windows.h
Library	Rtx_Rtss.lib