/*
	Copyright (C) 2012, 2013  fmaj7b5.info

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef FM7b5_CUDA_EVENT_H
#define FM7b5_CUDA_EVENT_H

#include <stdexcept>
#include <cuda_runtime.h>

class Event
{
public:
	Event();
	Event(unsigned int flags);
	~Event();
	operator cudaEvent_t();

	cudaError_t query() const;
	cudaError_t record(cudaStream_t stream = (cudaStream_t)0) const;
	cudaError_t synchronize() const;

protected:
	cudaEvent_t m_event;
};


Event::Event()
{
	cudaError_t status;

	status = cudaEventCreate(&m_event);

	if (status != cudaSuccess) {
		throw std::runtime_error(cudaGetErrorString(status));
	}
}

Event::Event(unsigned int flags)
{
	cudaError_t status;

	status = cudaEventCreateWithFlags(&m_event, flags);

	if (status != cudaSuccess) {
		throw std::runtime_error(cudaGetErrorString(status));
	}
}

Event::~Event()
{
	cudaError_t status;

	status = cudaEventDestroy(m_event);

	if (status != cudaSuccess) {
		throw std::runtime_error(cudaGetErrorString(status));
	}
}

Event::operator cudaEvent_t()
{
	return m_event;
}

cudaError_t
Event::query() const
{
	return cudaEventQuery(m_event);
}

cudaError_t
Event::record(cudaStream_t stream) const
{
	return cudaEventRecord(m_event, stream);
}

cudaError_t
Event::synchronize() const
{
	return cudaEventSynchronize(m_event);
}

#endif /* FM7b5_CUDA_EVENT_H */