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

#include <cuda.hpp>

Public Member Functions
	Stream ()
	creates a new asynchronous stream
bool	queryIfComplete () const
	Returns true if the current stream queue is finished.
void	waitForCompletion ()
	Blocks the current CPU thread until all operations in the stream are complete.
void	waitEvent (const Event &event)
	Makes a compute stream wait on an event.
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.
	operator bool_type () const
	returns true if stream object is not default (!= 0)
Static Public Member Functions
static Stream &	Null ()
	return Stream object for default CUDA stream

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. :

Definition at line 452 of file core/cuda.hpp.

Constructor & Destructor Documentation

Stream ( )

creates a new asynchronous stream

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& Null ( ) [static]

return Stream object for default CUDA stream

operator bool_type ( ) const

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

bool queryIfComplete ( ) const

Returns true if the current stream queue is finished.

Otherwise, it returns false.

void waitEvent ( const Event & event )

Makes a compute stream wait on an event.

void waitForCompletion ( )

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