Conditional exchange.
Source position: systemh.inc line 1606
function InterlockedCompareExchange( |
var Target: LongInt; |
NewValue: LongInt; |
Comperand: LongInt |
):LongInt; |
var Target: Pointer; |
NewValue: Pointer; |
Comperand: Pointer |
):Pointer; |
var Target: Cardinal; |
NewValue: Cardinal; |
Comperand: Cardinal |
):Cardinal; |
InterlockedCompareExchange does an compare-and-exchange operation on the specified values in a thread-safe way. The function compares Target and Comperand and exchanges Target with NewValue if Target and Comperand are equal. It returns the old value of Target. This is done in a thread-safe way, i.e., only one processor is accessing the Target variable at a time.
None.
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Thread-safe decrement. |
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Thread-safe increment. |
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Exchange 2 integers in a thread-safe way. |
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Thread-safe add and exchange of 2 values. |