Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Increments (increases by one) the value of the specified 32-bit variable as an atomic operation. The operation is performed using acquire memory ordering semantics.
LONG __cdecl InterlockedIncrementAcquire(
_Inout_ LONG volatile *Addend
);
- Addend [in, out]
A pointer to the variable to be incremented.
The function returns the resulting incremented value.
The variable pointed to by the Addend parameter must be aligned on a 32-bit boundary; otherwise, this function will behave unpredictably on multiprocessor x86 systems and any non-x86 systems. See _aligned_malloc.
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 _InterlockedIncrement_acq.
For processors that do not support acquire memory ordering semantics, this function is defined as a call to the InterlockedIncrement function. For more information, see WinBase.h.
Note This function is supported on Windows RT-based systems.
Minimum supported client |
Windows Vista [desktop apps | UWP apps] |
Minimum supported server |
Windows Server 2003 [desktop apps | UWP apps] |
Header |
WinBase.h (include Windows.h) |