InterlockedExchangePointer - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// miniport.h
PVOID InterlockedExchangePointer(
[in, out] PVOID volatile *Target,
[in, optional] PVOID Value
);
View the official Windows Driver Kit DDI reference// wdm.h
PVOID InterlockedExchangePointer(
[in, out] PVOID volatile *Target,
[in, optional] PVOID Value
);
View the official Windows Driver Kit DDI referenceNo description available.
The InterlockedExchangePointer routine performs an atomic operation that sets a pointer to a new value.
Target [in, out]A pointer to a PVOID value. The routine sets (*Target) to Value.
Value [in, optional]Specifies the PVOID value to set (*Target) to.
InterlockedExchangePointer returns the original value of the pointer at *Target (that is, the value of this pointer at entry to the routine).
InterlockedExchangePointer provides a fast, atomic way to synchronize updating a pointer variable that is shared by multiple threads.
InterlockedExchangePointer is designed for speed and, typically, is implemented inline by a compiler. InterlockedExchangePointer is atomic only with respect to other Interlocked*Xxx* calls. It does not use a spin lock and can be safely used on pageable data.
The Target parameter should be aligned on either a 32-bit or 64-bit boundary, depending on the system type, for better performance.
A call to InterlockedExchangePointer is atomic only with respect to other Interlocked*Xxx* calls.
Interlocked operations cannot be used on non-cached memory.
InterlockedCompareExchangePointer
The InterlockedExchangePointer routine performs an atomic operation that sets a pointer to a new value.
Target [in, out]A pointer to a PVOID value. The routine sets (*Target) to Value.
Value [in, optional]Specifies the PVOID value to set (*Target) to.
InterlockedExchangePointer returns the original value of the pointer at *Target (that is, the value of this pointer at entry to the routine).
InterlockedExchangePointer provides a fast, atomic way to synchronize updating a pointer variable that is shared by multiple threads.
InterlockedExchangePointer is designed for speed and, typically, is implemented inline by a compiler. InterlockedExchangePointer is atomic only with respect to other Interlocked*Xxx* calls. It does not use a spin lock and can be safely used on pageable data.
The Target parameter should be aligned on either a 32-bit or 64-bit boundary, depending on the system type, for better performance.
A call to InterlockedExchangePointer is atomic only with respect to other Interlocked*Xxx* calls.
Interlocked operations cannot be used on non-cached memory.
InterlockedCompareExchangePointer