InterlockedAdd function

Performs an atomic addition operation on the specified LONG values.

Syntax

LONG InterlockedAdd(
  _Interlocked_operand_ LONG *Addend,
  LONG                       Value
);

Parameters

Addend

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 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 _InterlockedAdd.

This function generates a full memory barrier (or fence) to ensure that memory operations are completed in order.

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

Requirements

   
Target Platform Windows
Header winnt.h (include Windows.h)

See Also

Interlocked Variable Access

InterlockedAdd64

InterlockedAddAcquire

InterlockedAddAcquire64

InterlockedAddNoFence

InterlockedAddNoFence64

InterlockedAddRelease

InterlockedAddRelease64

InterlockedExchangeAdd

Synchronization Functions