InterlockedExchange16 function

Sets a 16-bit variable to the specified value as an atomic operation.

To operate on a 32-bit variable, use the InterlockedExchange function.

To operate on a 64-bit variable, use the InterlockedExchange64 function.

Syntax

SHORT InterlockedExchange16(
  SHORT volatile *Destination,
  SHORT          ExChange
);

Parameters

Destination

A pointer to the value to be exchanged. The function sets this variable to ExChange, and returns its prior value.

ExChange

The value to be exchanged with the value pointed to by Destination.

Return Value

The function returns the initial 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 _InterlockedExchange16.

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

Itanium-based systems:  For performance-critical applications, use InterlockedExchangeAcquire64 instead.

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

Requirements

   
Minimum supported client Windows Vista [desktop apps | UWP apps]
Minimum supported server Windows Server 2003 [desktop apps | UWP apps]
Target Platform Windows
Header winnt.h (include Windows.h)

See Also

Interlocked Variable Access

InterlockedCompareExchange

InterlockedExchange

InterlockedExchange16Acquire

InterlockedExchange16NoFence

InterlockedExchange64

InterlockedExchange8

InterlockedExchangeAcquire

InterlockedExchangeAcquire64

InterlockedExchangeAdd

InterlockedExchangeNoFence

InterlockedExchangeNoFence64

InterlockedExchangePointer

InterlockedExchangePointerAcquire

InterlockedExchangePointerNoFence

InterlockedExchangeSubtract

Synchronization Functions