External Resource Interoperability

Functions

External Resource Interoperability

HIP API » Memory Management

Collaboration diagram for External Resource Interoperability:

Functions
hipError_t	hipImportExternalSemaphore (hipExternalSemaphore_t *extSem_out, const hipExternalSemaphoreHandleDesc *semHandleDesc)
	Imports an external semaphore.
hipError_t	hipSignalExternalSemaphoresAsync (const hipExternalSemaphore_t *extSemArray, const hipExternalSemaphoreSignalParams *paramsArray, unsigned int numExtSems, hipStream_t stream)
	Signals a set of external semaphore objects.
hipError_t	hipWaitExternalSemaphoresAsync (const hipExternalSemaphore_t *extSemArray, const hipExternalSemaphoreWaitParams *paramsArray, unsigned int numExtSems, hipStream_t stream)
	Waits on a set of external semaphore objects.
hipError_t	hipDestroyExternalSemaphore (hipExternalSemaphore_t extSem)
	Destroys an external semaphore object and releases any references to the underlying resource. Any outstanding signals or waits must have completed before the semaphore is destroyed.
hipError_t	hipImportExternalMemory (hipExternalMemory_t *extMem_out, const hipExternalMemoryHandleDesc *memHandleDesc)
	Imports an external memory object.
hipError_t	hipExternalMemoryGetMappedBuffer (void **devPtr, hipExternalMemory_t extMem, const hipExternalMemoryBufferDesc *bufferDesc)
	Maps a buffer onto an imported memory object.
hipError_t	hipDestroyExternalMemory (hipExternalMemory_t extMem)
	Destroys an external memory object.
hipError_t	hipExternalMemoryGetMappedMipmappedArray (hipMipmappedArray_t *mipmap, hipExternalMemory_t extMem, const hipExternalMemoryMipmappedArrayDesc *mipmapDesc)
	Maps a mipmapped array onto an external memory object.

Detailed Description

---

---

This section describes the external resource interoperability functions of HIP runtime API.

Function Documentation

◆ hipDestroyExternalMemory()

hipError_t hipDestroyExternalMemory

(

hipExternalMemory_t

extMem

)

Destroys an external memory object.

Parameters

[in]

extMem

External memory object to be destroyed

Returns

hipSuccess, hipErrorInvalidDevice, hipErrorInvalidValue

See also

◆ hipDestroyExternalSemaphore()

hipError_t hipDestroyExternalSemaphore

(

hipExternalSemaphore_t

extSem

)

Destroys an external semaphore object and releases any references to the underlying resource. Any outstanding signals or waits must have completed before the semaphore is destroyed.

Parameters

[in]

extSem

handle to an external memory object

Returns

hipSuccess, hipErrorInvalidDevice, hipErrorInvalidValue

See also

◆ hipExternalMemoryGetMappedBuffer()

hipError_t hipExternalMemoryGetMappedBuffer	(	void **	devPtr,
		hipExternalMemory_t	extMem,
		const hipExternalMemoryBufferDesc *	bufferDesc
	)

Maps a buffer onto an imported memory object.

Parameters

[out]	devPtr	Returned device pointer to buffer
[in]	extMem	Handle to external memory object
[in]	bufferDesc	Buffer descriptor

Returns

hipSuccess, hipErrorInvalidDevice, hipErrorInvalidValue

See also

◆ hipExternalMemoryGetMappedMipmappedArray()

hipError_t hipExternalMemoryGetMappedMipmappedArray	(	hipMipmappedArray_t *	mipmap,
		hipExternalMemory_t	extMem,
		const hipExternalMemoryMipmappedArrayDesc *	mipmapDesc
	)

Maps a mipmapped array onto an external memory object.

Parameters

[out]	mipmap	mipmapped array to return
[in]	extMem	external memory object handle
[in]	mipmapDesc	external mipmapped array descriptor

Returned mipmapped array must be freed using hipFreeMipmappedArray.

Returns

hipSuccess, hipErrorInvalidValue, hipErrorInvalidResourceHandle

See also

hipImportExternalMemory, hipDestroyExternalMemory, hipExternalMemoryGetMappedBuffer, hipFreeMipmappedArray

◆ hipImportExternalMemory()

hipError_t hipImportExternalMemory	(	hipExternalMemory_t *	extMem_out,
		const hipExternalMemoryHandleDesc *	memHandleDesc
	)

Imports an external memory object.

Parameters

[out]	extMem_out	Returned handle to an external memory object
[in]	memHandleDesc	Memory import handle descriptor

Returns

hipSuccess, hipErrorInvalidDevice, hipErrorInvalidValue

See also

◆ hipImportExternalSemaphore()

hipError_t hipImportExternalSemaphore	(	hipExternalSemaphore_t *	extSem_out,
		const hipExternalSemaphoreHandleDesc *	semHandleDesc
	)

Imports an external semaphore.

Parameters

[out]	extSem_out	External semaphores to be waited on
[in]	semHandleDesc	Semaphore import handle descriptor

Returns

hipSuccess, hipErrorInvalidDevice, hipErrorInvalidValue

See also

◆ hipSignalExternalSemaphoresAsync()

hipError_t hipSignalExternalSemaphoresAsync	(	const hipExternalSemaphore_t *	extSemArray,
		const hipExternalSemaphoreSignalParams *	paramsArray,
		unsigned int	numExtSems,
		hipStream_t	stream
	)

Signals a set of external semaphore objects.

Parameters

[in]	extSemArray	External semaphores to be waited on
[in]	paramsArray	Array of semaphore parameters
[in]	numExtSems	Number of semaphores to wait on
[in]	stream	Stream to enqueue the wait operations in

Returns

hipSuccess, hipErrorInvalidDevice, hipErrorInvalidValue

See also

◆ hipWaitExternalSemaphoresAsync()

hipError_t hipWaitExternalSemaphoresAsync	(	const hipExternalSemaphore_t *	extSemArray,
		const hipExternalSemaphoreWaitParams *	paramsArray,
		unsigned int	numExtSems,
		hipStream_t	stream
	)

Waits on a set of external semaphore objects.

Parameters

[in]	extSemArray	External semaphores to be waited on
[in]	paramsArray	Array of semaphore parameters
[in]	numExtSems	Number of semaphores to wait on
[in]	stream	Stream to enqueue the wait operations in

Returns

hipSuccess, hipErrorInvalidDevice, hipErrorInvalidValue

See also