1/*
2 * Copyright (C) 2012 University of Szeged
3 * Copyright (C) 2012 Tamas Czene <tczene@inf.u-szeged.hu>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27#if ENABLE(OPENCL)
28
29#ifndef OpenCLHandle_h
30#define OpenCLHandle_h
31
32#include "CL/cl.h"
33
34namespace WebCore {
35
36class OpenCLHandle {
37public:
38    OpenCLHandle() : m_openCLMemory(0) { }
39    OpenCLHandle(cl_mem openCLMemory) : m_openCLMemory(openCLMemory) { }
40
41    operator cl_mem() { return m_openCLMemory; }
42
43    void operator=(OpenCLHandle openCLMemory) { m_openCLMemory = openCLMemory; }
44
45    // This conversion operator allows implicit conversion to bool but not to other integer types.
46    typedef cl_mem (OpenCLHandle::*UnspecifiedBoolType);
47    operator UnspecifiedBoolType() const { return m_openCLMemory ? &OpenCLHandle::m_openCLMemory : 0; }
48
49    void* handleAddress() { return reinterpret_cast<void*>(&m_openCLMemory); }
50
51    void clear()
52    {
53        if (m_openCLMemory)
54            clReleaseMemObject(m_openCLMemory);
55        m_openCLMemory = 0;
56    }
57
58private:
59    cl_mem m_openCLMemory;
60};
61
62}
63
64#endif
65#endif // ENABLE(OPENCL)
66