/*
* opencog/atoms/opencl/OpenclDataValue.h
*
* Copyright (C) 2025 Linas Vepstas
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License v3 as
* published by the Free Software Foundation and including the exceptions
* at http://opencog.org/wiki/Licenses
*
* 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 Affero General Public License
* along with this program; if not, write to:
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _OPENCOG_OPENCL_DATA_VALUE_H
#define _OPENCOG_OPENCL_DATA_VALUE_H
#include <opencog/atoms/opencl/opencl-headers.h>
#include <opencog/atoms/base/Handle.h>
namespace opencog
{
/** \addtogroup grp_atomspace
* @{
*/
/**
* OpenclDataValues hold cl::Buffers that are needed to talk to the GPU/
* Formally, these inherit from Value, but we don't want to actually
* do this in C++, because the diamond inhertaince pattern will kill
* kill us. We do not actually need anything that class Value provides.
* We only need the OpenCL infrastructure.
*/
class OpenclDataValue
{
friend class OpenclJobValue;
friend class OpenclNode;
protected:
OpenclDataValue(void);
bool _have_buff;
mutable cl::Buffer _buffer;
const cl::Buffer& get_buffer(void) { return _buffer; }
mutable cl::CommandQueue _read_queue;
mutable cl::Event _read_event;
void set_context(const Handle&);
virtual size_t reserve_size(void) const = 0;
virtual void* data(void) const = 0;
void send_buffer(const Handle&) const;
void fetch_buffer(void) const;
public:
virtual ~OpenclDataValue();
};
/** @}*/
} // namespace opencog
#endif // _OPENCOG_OPENCL_DATA_VALUE_H