InterlockedExchange16
InterlockedExchange16 sets a 16-bit variable to the specified value as an atomic operation.
To operate on a pointer variable, use the InterlockedExchangePointer function.
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.
Requirements
Minimum Supported Version | RTX64 3.1 |
Header | windows.h |
Library | Rtx_Rtss.lib |
See Also: