InterlockedAddNoFence64 function

Article
03/28/2018

Performs an atomic addition operation on the specified LONGLONG values. The operation is performed atomically, but without using memory barriers.

Syntax

LONGLONG __cdecl InterlockedAddNoFence64(
  _Inout_ LONGLONG volatile *Addend,
  _In_    LONGLONG          Value
);

Parameters

Addend [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 result of the operation.

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 _InterlockedAdd64_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)