InterlockedExchange

InterlockedExchange sets a 64-bit variable to the specified value as an atomic operation.

Syntax

LONG InterlockedExchange(
     LONG volatile *Target,
     LONG           Value      
  );

Parameters

Target

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

Value

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

Return Value

The function returns the resulting incremented value.

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. It is thread-safe.

This function is implemented using a compiler intrinsic where possible.This function generates a full memory barrier (or fence) to ensure that memory operations are completed in order.

Requirements

Minimum Supported Version	RTX64 2013
Header	windows.h
Library	Rtx_Rtss.lib