sack::memory::LockedExchange Function

C++

MEM_PROC _32 MEM_API LockedExchange(PV_32 p, _32 val);

File

sharemem.h

Parameters

Parameters	Description
PV_32 p	pointer to a 32 bit value to exchange
_32 val	value to set into the variable

Returns

The prior value in p.

Description

Multiprocessor safe swap of the contents of a variable with a new value, and result with the old variable.

Example

_32 variable = 0;
_32 oldvalue = InterlockedExchange( &variable, 1 );

Group

Functions

Links

sharemem.h, Functions, Example

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