Platform.h

#ifndef OPENMM_PLATFORM_H_
#define OPENMM_PLATFORM_H_

/* -------------------------------------------------------------------------- *
 *                                   OpenMM                                   *
 * -------------------------------------------------------------------------- *
 * This is part of the OpenMM molecular simulation toolkit originating from   *
 * Simbios, the NIH National Center for Physics-Based Simulation of           *
 * Biological Structures at Stanford, funded under the NIH Roadmap for        *
 * Medical Research, grant U54 GM072970. See https://simtk.org.               *
 *                                                                            *
 * Portions copyright (c) 2008-2012 Stanford University and the Authors.      *
 * Authors: Peter Eastman                                                     *
 * Contributors:                                                              *
 *                                                                            *
 * Permission is hereby granted, free of charge, to any person obtaining a    *
 * copy of this software and associated documentation files (the "Software"), *
 * to deal in the Software without restriction, including without limitation  *
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,   *
 * and/or sell copies of the Software, and to permit persons to whom the      *
 * Software is furnished to do so, subject to the following conditions:       *
 *                                                                            *
 * The above copyright notice and this permission notice shall be included in *
 * all copies or substantial portions of the Software.                        *
 *                                                                            *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   *
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    *
 * THE AUTHORS, CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,    *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR      *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE  *
 * USE OR OTHER DEALINGS IN THE SOFTWARE.                                     *
 * -------------------------------------------------------------------------- */

#include <map>
#include <string>
#include <vector>
#include "openmm/internal/windowsExport.h"

namespace OpenMM {

class Context;
class ContextImpl;
class Kernel;
class KernelFactory;

class OPENMM_EXPORT Platform {
public:
    virtual ~Platform();
    virtual const std::string& getName() const = 0;
    virtual double getSpeed() const = 0;
    virtual bool supportsDoublePrecision() const = 0;
    const std::vector<std::string>& getPropertyNames() const;
    virtual const std::string& getPropertyValue(const Context& context, const std::string& property) const;
    virtual void setPropertyValue(Context& context, const std::string& property, const std::string& value) const;
    const std::string& getPropertyDefaultValue(const std::string& property) const;
    void setPropertyDefaultValue(const std::string& property, const std::string& value);
    virtual void contextCreated(ContextImpl& context, const std::map<std::string, std::string>& properties) const;
    virtual void contextDestroyed(ContextImpl& context) const;
    void registerKernelFactory(const std::string& name, KernelFactory* factory);
    bool supportsKernels(const std::vector<std::string>& kernelNames) const ;
    Kernel createKernel(const std::string& name, ContextImpl& context) const;
    static void registerPlatform(Platform* platform);
    static int getNumPlatforms();
    static Platform& getPlatform(int index);
    static Platform& getPlatformByName(const std::string& name);
    static Platform& findPlatform(const std::vector<std::string>& kernelNames);
    static void loadPluginLibrary(const std::string& file);
    static std::vector<std::string> loadPluginsFromDirectory(const std::string& directory);
    static const std::string& getDefaultPluginsDirectory();
    static const std::string& getOpenMMVersion();
protected:
    ContextImpl& getContextImpl(Context& context) const;
    const ContextImpl& getContextImpl(const Context& context) const;
    std::vector<std::string> platformProperties;
private:
    std::map<std::string, KernelFactory*> kernelFactories;
    std::map<std::string, std::string> defaultProperties;
    static std::vector<Platform*>& getPlatforms();
};

} // namespace OpenMM

#endif /*OPENMM_PLATFORM_H_*/