Reference for package '#rtl'

InterlockedDecrement

Thread-safe decrement

Declaration

Source position: systemh.inc line 1527

  function InterlockedDecrement(var Target: LongInt) : LongInt;
  function InterlockedDecrement(var Target: Pointer) : Pointer;
  function InterlockedDecrement(var Target: Cardinal) : Cardinal;

Description

InterLockedDecrement decrements Target with 1 and returns the result. This is done in a thread-safe way. (i.e. only one processor is accessing the variable at a time).

Errors

None.

See also

Name Description
InterlockedCompareExchange Conditional exchange
InterLockedExchange Exchange 2 integers in a thread-safe way
InterLockedExchangeAdd Thread-safe add and exchange of 2 values
InterLockedIncrement Thread-safe increment