This class encapsulates a queue of asynchronous calls. More...

#include "cuda.hpp"

Public Types
typedef void(*	StreamCallback )(int status, void *userData)

Public Member Functions
	Stream ()
	creates a new asynchronous stream More...

void	enqueueHostCallback (StreamCallback callback, void *userData)
	Adds a callback to be called on the host after all currently enqueued items in the stream have completed. More...

	operator bool_type () const
	returns true if stream object is not default (!= 0) More...

bool	queryIfComplete () const
	Returns true if the current stream queue is finished. Otherwise, it returns false. More...

void	waitEvent (const Event &event)
	Makes a compute stream wait on an event. More...

void	waitForCompletion ()
	Blocks the current CPU thread until all operations in the stream are complete. More...

Static Public Member Functions
static Stream &	Null ()
	return Stream object for default CUDA stream More...

Detailed Description

This class encapsulates a queue of asynchronous calls.

Note: Currently, you may face problems if an operation is enqueued twice with different data. Some functions use the constant GPU memory, and next call may update the memory before the previous one has been finished. But calling different operations asynchronously is safe because each operation has its own constant buffer. Memory copy/upload/download/set operations to the buffers you hold are also safe. :

Member Typedef Documentation

typedef void(* cv::cuda::Stream::StreamCallback)(int status, void *userData)

cv::cuda::Stream::Stream ( )

creates a new asynchronous stream

void cv::cuda::Stream::enqueueHostCallback	(	StreamCallback	callback,
		void *	userData
	)

Adds a callback to be called on the host after all currently enqueued items in the stream have completed.

Note: Callbacks must not make any CUDA API calls. Callbacks must not perform any synchronization that may depend on outstanding device work or other callbacks that are not mandated to run earlier. Callbacks without a mandated order (in independent streams) execute in undefined order and may be serialized.

static Stream& cv::cuda::Stream::Null ( )

static

return Stream object for default CUDA stream

cv::cuda::Stream::operator bool_type ( ) const

returns true if stream object is not default (!= 0)

bool cv::cuda::Stream::queryIfComplete ( ) const

Returns true if the current stream queue is finished. Otherwise, it returns false.

void cv::cuda::Stream::waitEvent ( const Event & event )

Makes a compute stream wait on an event.

void cv::cuda::Stream::waitForCompletion ( )

Blocks the current CPU thread until all operations in the stream are complete.

friend class BufferPool

friend

friend class DefaultDeviceInitializer

friend

friend

The documentation for this class was generated from the following file: