oclengine.hpp

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//
// (C) Daniel Strano 2017, 2018. All rights reserved.
//
// This is a multithreaded, universal quantum register simulation, allowing
// (nonphysical) register cloning and direct measurement of probability and
// phase, to leverage what advantages classical emulation of qubits can have.
//
// Licensed under the GNU General Public License V3.
// See LICENSE.md in the project root or https://www.gnu.org/licenses/gpl-3.0.en.html
// for details.

#pragma once

#if !ENABLE_OPENCL
#error OpenCL has not been enabled
#endif

#ifdef __APPLE__
#include <OpenCL/cl.hpp>
#else
#include <CL/cl.hpp>
#endif

namespace Qrack {

class OCLEngine {
public:
    static OCLEngine* Instance();
    static OCLEngine* Instance(int plat, int dev);
    cl::Context* GetContextPtr();
    cl::CommandQueue* GetQueuePtr();
    cl::Kernel* GetApply2x2Ptr();
    cl::Kernel* GetApply2x2NormPtr();
    cl::Kernel* GetXPtr();
    cl::Kernel* GetSwapPtr();
    cl::Kernel* GetROLPtr();
    cl::Kernel* GetRORPtr();
    cl::Kernel* GetINCPtr();
    cl::Kernel* GetDECPtr();
    cl::Kernel* GetINCCPtr();
    cl::Kernel* GetDECCPtr();
    cl::Kernel* GetLDAPtr();
    cl::Kernel* GetADCPtr();
    cl::Kernel* GetSBCPtr();

private:
    std::vector<cl::Platform> all_platforms;
    cl::Platform default_platform;
    std::vector<cl::Device> all_devices;
    cl::Device default_device;
    cl::Context context;
    cl::Program program;
    cl::CommandQueue queue;
    cl::Kernel apply2x2;
    cl::Kernel apply2x2norm;
    cl::Kernel x;
    cl::Kernel swap;
    cl::Kernel rol;
    cl::Kernel ror;
    cl::Kernel inc;
    cl::Kernel dec;
    cl::Kernel incc;
    cl::Kernel decc;
    cl::Kernel indexedLda;
    cl::Kernel indexedAdc;
    cl::Kernel indexedSbc;

    OCLEngine(); // Private so that it can  not be called
    OCLEngine(int plat, int dev); // Private so that it can  not be called
    OCLEngine(OCLEngine const&); // copy constructor is private
    OCLEngine& operator=(OCLEngine const& rhs); // assignment operator is private
    static OCLEngine* m_pInstance;

    void InitOCL(int plat, int dev);
};

} // namespace Qrack