InterlockedBitTestAndResetAcquire function

Artikel
28.03.2018

Tests the specified bit of the specified LONG value and sets it to 0. The operation is atomic, and it is performed with acquire memory ordering semantics.

Syntax

c++

unsigned char __cdecl InterlockedbittestandresetAcquire(
  _Inout_ LONG volatile ,
  _In_                  LONG
);

Parameters

** [in, out]
A pointer to a variable.
LONG [in]
The bit position to be tested.

Return value

The value of the specified bit.

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.

This function is implemented using a compiler intrinsic where possible. For more information, see the WinBase.h header file and _interlockedbittestandreset_acq.

Note This function is supported on Windows RT-based systems.

Requirements

Minimum supported client	Windows 8 [desktop apps only]
Minimum supported server	Windows Server 2012 [desktop apps only]
Header	Winnt.h (include Windows.h)

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