JCL Help:LockedExchangeDec@Int64

 JCL Help: LockedExchangeDec Function

JCL Functions

► JclSynch.pas Functions

[+] JclSynch.pas Functions

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Summary

Thread safe decrement.

Pascal

 function LockedExchangeDec(var Target: Integer): Integer; overload;
function LockedExchangeDec(var Target: Int64): Int64; overload;

Parameters

Parameters	Description
var Target: Integer	The variable to decrement.

Return Value

The value of Target before being decremented.

Description

LockedExchangeDec decrements the specified Integer in an atomic, thread-safe manner. The LockedXxx functions allow for a simple and efficient way for applications to synchronize access to and manipulate integer variables which are shared by multiple threads.

See Also

LockedExchangeAdd LockedExchangeSub LockedExchange LockedInc

About

Unit

JclSynch

Donator

Azret Botash

Notes

The Win32 API provides similar functions. Look up InterlockedXxx in the Platform SDK.

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