7.23. cudaExternalSemaphoreHandleDesc

struct cudaExternalSemaphoreHandleDesc

External semaphore handle descriptor.

Public Members

int fd

File descriptor referencing the semaphore object.

Valid when type is one of the following:

• cudaExternalSemaphoreHandleTypeOpaqueFd

• cudaExternalSemaphoreHandleTypeTimelineSemaphoreFd

unsigned int flags

Flags reserved for the future.

Must be zero.

void *handle

Valid NT handle.

Must be NULL if ‘name’ is non-NULL

union cudaExternalSemaphoreHandleDesc::[anonymous] handle

const void *name

Name of a valid synchronization primitive.

Must be NULL if ‘handle’ is non-NULL.

const void *nvSciSyncObj

Valid NvSciSyncObj.

Must be non NULL

unsigned int reserved[16]

Must be zero.

enum cudaExternalSemaphoreHandleType type

Type of the handle.

struct cudaExternalSemaphoreHandleDesc::[anonymous]::[anonymous] win32

Win32 handle referencing the semaphore object.

Valid when type is one of the following:

• cudaExternalSemaphoreHandleTypeOpaqueWin32

• cudaExternalSemaphoreHandleTypeOpaqueWin32Kmt

• cudaExternalSemaphoreHandleTypeD3D12Fence

• cudaExternalSemaphoreHandleTypeD3D11Fence

• cudaExternalSemaphoreHandleTypeKeyedMutex

• cudaExternalSemaphoreHandleTypeTimelineSemaphoreWin32 Exactly one of ‘handle’ and ‘name’ must be non-NULL. If type is one of the following: cudaExternalSemaphoreHandleTypeOpaqueWin32Kmt cudaExternalSemaphoreHandleTypeKeyedMutexKmt then ‘name’ must be NULL.