event();

explicit event(cl_event event, bool retain = true);

event(const event & other);

event(event && other) noexcept;

event & operator=(const event & other);

event & operator=(event && other) noexcept;

~event();

cl_event & get() const;

cl_int status() const;

cl_command_type get_command_type() const;

template<typename T> T get_info(cl_event_info info) const;

Returns information about the event.

See the documentation for clGetEventInfo() for more information.

template<int Enum> unspecified get_info() const;

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

template<typename T> T get_profiling_info(cl_profiling_info info) const;

Returns profiling information for the event.

See Also:

event::duration()

See the documentation for clGetEventProfilingInfo() for more information.

void wait();

Blocks until the actions corresponding to the event have completed.

void set_callback(void(BOOST_COMPUTE_CL_CALLBACK *callback)(cl_event event, cl_int status, void *user_data), 
                  cl_int status = CL_COMPLETE, void * user_data = 0);

Registers a function to be called when the event status changes to status (by default CL_COMPLETE). The callback is passed the OpenCL event object, the event status, and a pointer to arbitrary user data.

See the documentation for clSetEventCallback() for more information.

	Warning
	This method is only available if the OpenCL version is 1.1 or later.

template<typename Function> 
  void set_callback(Function callback, cl_int status = CL_COMPLETE);

Registers a generic function to be called when the event status changes to status (by default CL_COMPLETE).

The function specified by callback must be invokable with zero arguments (e.g. callback()).

	Warning
	This method is only available if the OpenCL version is 1.1 or later.

template<typename Duration> 
  Duration duration(cl_profiling_info start = CL_PROFILING_COMMAND_START, 
                    cl_profiling_info end = CL_PROFILING_COMMAND_END) const;

Returns the total duration of the event from start to end.

For example, to print the number of milliseconds the event took to execute:

std::cout << event.duration<std::chrono::milliseconds>().count() << " ms" << std::endl;

See Also:

event::get_profiling_info()

bool operator==(const event & other) const;

bool operator!=(const event & other) const;